Prevent 'n' being used as a parameter name.

[libguestfs.git] / capitests / tests.c

diff --git a/capitests/tests.c b/capitests/tests.c
index 5d94598..0254437 100644 (file)
--- a/capitests/tests.c
+++ b/capitests/tests.c
@@ -31,11 +31,6 @@
 static guestfs_h *g;
 static int suppress_error = 0;
 
-/* This will be 's' or 'h' depending on whether the guest kernel
- * names IDE devices /dev/sd* or /dev/hd*.
- */
-static char devchar = 's';
-
 static void print_error (guestfs_h *g, void *data, const char *msg)
 {
   if (!suppress_error)
@@ -62,11 +57,39 @@ static void print_table (char * const * const argv)
 
 static void no_test_warnings (void)
 {
+  fprintf (stderr, "warning: \"guestfs_test0\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rint\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rinterr\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rint64\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rint64err\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rbool\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rboolerr\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rconststring\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rconststringerr\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rstring\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rstringerr\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rstringlist\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rstringlisterr\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rintbool\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rintboolerr\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rpvlist\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rpvlisterr\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rvglist\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rvglisterr\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rlvlist\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rlvlisterr\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rstat\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rstaterr\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rstatvfs\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rstatvfserr\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rhashtable\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_test0rhashtableerr\" has no tests\n");
   fprintf (stderr, "warning: \"guestfs_launch\" has no tests\n");
   fprintf (stderr, "warning: \"guestfs_wait_ready\" has no tests\n");
   fprintf (stderr, "warning: \"guestfs_kill_subprocess\" has no tests\n");
   fprintf (stderr, "warning: \"guestfs_add_drive\" has no tests\n");
   fprintf (stderr, "warning: \"guestfs_add_cdrom\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_add_drive_ro\" has no tests\n");
   fprintf (stderr, "warning: \"guestfs_config\" has no tests\n");
   fprintf (stderr, "warning: \"guestfs_set_qemu\" has no tests\n");
   fprintf (stderr, "warning: \"guestfs_get_qemu\" has no tests\n");
@@ -125,12 +148,1199 @@ static void no_test_warnings (void)
   fprintf (stderr, "warning: \"guestfs_vg_activate\" has no tests\n");
   fprintf (stderr, "warning: \"guestfs_resize2fs\" has no tests\n");
   fprintf (stderr, "warning: \"guestfs_e2fsck_f\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_sh\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_sh_lines\" has no tests\n");
+  fprintf (stderr, "warning: \"guestfs_scrub_freespace\" has no tests\n");
+}
+
+static int test_wc_c_0_skip (void)
+{
+  const char *str;
+
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "wc_c") == NULL;
+  str = getenv ("SKIP_TEST_WC_C_0");
+  if (str && strcmp (str, "1") == 0) return 1;
+  str = getenv ("SKIP_TEST_WC_C");
+  if (str && strcmp (str, "1") == 0) return 1;
+  return 0;
+}
+
+static int test_wc_c_0 (void)
+{
+  if (test_wc_c_0_skip ()) {
+    printf ("%s skipped (reason: environment variable set)\n", "test_wc_c_0");
+    return 0;
+  }
+
+  /* InitBasicFS for test_wc_c_0: create ext2 on /dev/sda1 */
+  {
+    char device[] = "/dev/sda";
+    int r;
+    suppress_error = 0;
+    r = guestfs_blockdev_setrw (g, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_umount_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_lvm_remove_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda";
+    char lines_0[] = ",";
+    char *lines[] = {
+      lines_0,
+      NULL
+    };
+    int r;
+    suppress_error = 0;
+    r = guestfs_sfdisk (g, device, 0, 0, 0, lines);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char fstype[] = "ext2";
+    char device[] = "/dev/sda1";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mkfs (g, fstype, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda1";
+    char mountpoint[] = "/";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mount (g, device, mountpoint);
+    if (r == -1)
+      return -1;
+  }
+  /* TestOutputInt for wc_c (0) */
+  {
+    char options[] = "ro";
+    char vfstype[] = "squashfs";
+    char device[] = "/dev/sdd";
+    char mountpoint[] = "/";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mount_vfs (g, options, vfstype, device, mountpoint);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char path[] = "/100kallspaces";
+    int r;
+    suppress_error = 0;
+    r = guestfs_wc_c (g, path);
+    if (r == -1)
+      return -1;
+    if (r != 102400) {
+      fprintf (stderr, "test_wc_c_0: expected 102400 but got %d\n",               (int) r);
+      return -1;
+    }
+  }
+  return 0;
+}
+
+static int test_wc_w_0_skip (void)
+{
+  const char *str;
+
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "wc_w") == NULL;
+  str = getenv ("SKIP_TEST_WC_W_0");
+  if (str && strcmp (str, "1") == 0) return 1;
+  str = getenv ("SKIP_TEST_WC_W");
+  if (str && strcmp (str, "1") == 0) return 1;
+  return 0;
+}
+
+static int test_wc_w_0 (void)
+{
+  if (test_wc_w_0_skip ()) {
+    printf ("%s skipped (reason: environment variable set)\n", "test_wc_w_0");
+    return 0;
+  }
+
+  /* InitBasicFS for test_wc_w_0: create ext2 on /dev/sda1 */
+  {
+    char device[] = "/dev/sda";
+    int r;
+    suppress_error = 0;
+    r = guestfs_blockdev_setrw (g, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_umount_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_lvm_remove_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda";
+    char lines_0[] = ",";
+    char *lines[] = {
+      lines_0,
+      NULL
+    };
+    int r;
+    suppress_error = 0;
+    r = guestfs_sfdisk (g, device, 0, 0, 0, lines);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char fstype[] = "ext2";
+    char device[] = "/dev/sda1";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mkfs (g, fstype, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda1";
+    char mountpoint[] = "/";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mount (g, device, mountpoint);
+    if (r == -1)
+      return -1;
+  }
+  /* TestOutputInt for wc_w (0) */
+  {
+    char options[] = "ro";
+    char vfstype[] = "squashfs";
+    char device[] = "/dev/sdd";
+    char mountpoint[] = "/";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mount_vfs (g, options, vfstype, device, mountpoint);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char path[] = "/10klines";
+    int r;
+    suppress_error = 0;
+    r = guestfs_wc_w (g, path);
+    if (r == -1)
+      return -1;
+    if (r != 10000) {
+      fprintf (stderr, "test_wc_w_0: expected 10000 but got %d\n",               (int) r);
+      return -1;
+    }
+  }
+  return 0;
+}
+
+static int test_wc_l_0_skip (void)
+{
+  const char *str;
+
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "wc_l") == NULL;
+  str = getenv ("SKIP_TEST_WC_L_0");
+  if (str && strcmp (str, "1") == 0) return 1;
+  str = getenv ("SKIP_TEST_WC_L");
+  if (str && strcmp (str, "1") == 0) return 1;
+  return 0;
+}
+
+static int test_wc_l_0 (void)
+{
+  if (test_wc_l_0_skip ()) {
+    printf ("%s skipped (reason: environment variable set)\n", "test_wc_l_0");
+    return 0;
+  }
+
+  /* InitBasicFS for test_wc_l_0: create ext2 on /dev/sda1 */
+  {
+    char device[] = "/dev/sda";
+    int r;
+    suppress_error = 0;
+    r = guestfs_blockdev_setrw (g, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_umount_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_lvm_remove_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda";
+    char lines_0[] = ",";
+    char *lines[] = {
+      lines_0,
+      NULL
+    };
+    int r;
+    suppress_error = 0;
+    r = guestfs_sfdisk (g, device, 0, 0, 0, lines);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char fstype[] = "ext2";
+    char device[] = "/dev/sda1";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mkfs (g, fstype, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda1";
+    char mountpoint[] = "/";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mount (g, device, mountpoint);
+    if (r == -1)
+      return -1;
+  }
+  /* TestOutputInt for wc_l (0) */
+  {
+    char options[] = "ro";
+    char vfstype[] = "squashfs";
+    char device[] = "/dev/sdd";
+    char mountpoint[] = "/";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mount_vfs (g, options, vfstype, device, mountpoint);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char path[] = "/10klines";
+    int r;
+    suppress_error = 0;
+    r = guestfs_wc_l (g, path);
+    if (r == -1)
+      return -1;
+    if (r != 10000) {
+      fprintf (stderr, "test_wc_l_0: expected 10000 but got %d\n",               (int) r);
+      return -1;
+    }
+  }
+  return 0;
+}
+
+static int test_mkdtemp_0_skip (void)
+{
+  const char *str;
+
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "mkdtemp") == NULL;
+  str = getenv ("SKIP_TEST_MKDTEMP_0");
+  if (str && strcmp (str, "1") == 0) return 1;
+  str = getenv ("SKIP_TEST_MKDTEMP");
+  if (str && strcmp (str, "1") == 0) return 1;
+  return 0;
+}
+
+static int test_mkdtemp_0 (void)
+{
+  if (test_mkdtemp_0_skip ()) {
+    printf ("%s skipped (reason: environment variable set)\n", "test_mkdtemp_0");
+    return 0;
+  }
+
+  /* InitBasicFS for test_mkdtemp_0: create ext2 on /dev/sda1 */
+  {
+    char device[] = "/dev/sda";
+    int r;
+    suppress_error = 0;
+    r = guestfs_blockdev_setrw (g, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_umount_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_lvm_remove_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda";
+    char lines_0[] = ",";
+    char *lines[] = {
+      lines_0,
+      NULL
+    };
+    int r;
+    suppress_error = 0;
+    r = guestfs_sfdisk (g, device, 0, 0, 0, lines);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char fstype[] = "ext2";
+    char device[] = "/dev/sda1";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mkfs (g, fstype, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda1";
+    char mountpoint[] = "/";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mount (g, device, mountpoint);
+    if (r == -1)
+      return -1;
+  }
+  /* TestRun for mkdtemp (0) */
+  {
+    char path[] = "/tmp";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mkdir (g, path);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char template[] = "/tmp/tmpXXXXXX";
+    char *r;
+    suppress_error = 0;
+    r = guestfs_mkdtemp (g, template);
+    if (r == NULL)
+      return -1;
+    free (r);
+  }
+  return 0;
+}
+
+static int test_scrub_file_0_skip (void)
+{
+  const char *str;
+
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "scrub_file") == NULL;
+  str = getenv ("SKIP_TEST_SCRUB_FILE_0");
+  if (str && strcmp (str, "1") == 0) return 1;
+  str = getenv ("SKIP_TEST_SCRUB_FILE");
+  if (str && strcmp (str, "1") == 0) return 1;
+  return 0;
+}
+
+static int test_scrub_file_0 (void)
+{
+  if (test_scrub_file_0_skip ()) {
+    printf ("%s skipped (reason: environment variable set)\n", "test_scrub_file_0");
+    return 0;
+  }
+
+  /* InitBasicFS for test_scrub_file_0: create ext2 on /dev/sda1 */
+  {
+    char device[] = "/dev/sda";
+    int r;
+    suppress_error = 0;
+    r = guestfs_blockdev_setrw (g, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_umount_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_lvm_remove_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda";
+    char lines_0[] = ",";
+    char *lines[] = {
+      lines_0,
+      NULL
+    };
+    int r;
+    suppress_error = 0;
+    r = guestfs_sfdisk (g, device, 0, 0, 0, lines);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char fstype[] = "ext2";
+    char device[] = "/dev/sda1";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mkfs (g, fstype, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda1";
+    char mountpoint[] = "/";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mount (g, device, mountpoint);
+    if (r == -1)
+      return -1;
+  }
+  /* TestRun for scrub_file (0) */
+  {
+    char path[] = "/file";
+    char content[] = "content";
+    int r;
+    suppress_error = 0;
+    r = guestfs_write_file (g, path, content, 0);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char file[] = "/file";
+    int r;
+    suppress_error = 0;
+    r = guestfs_scrub_file (g, file);
+    if (r == -1)
+      return -1;
+  }
+  return 0;
+}
+
+static int test_scrub_device_0_skip (void)
+{
+  const char *str;
+
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "scrub_device") == NULL;
+  str = getenv ("SKIP_TEST_SCRUB_DEVICE_0");
+  if (str && strcmp (str, "1") == 0) return 1;
+  str = getenv ("SKIP_TEST_SCRUB_DEVICE");
+  if (str && strcmp (str, "1") == 0) return 1;
+  return 0;
+}
+
+static int test_scrub_device_0 (void)
+{
+  if (test_scrub_device_0_skip ()) {
+    printf ("%s skipped (reason: environment variable set)\n", "test_scrub_device_0");
+    return 0;
+  }
+
+  /* InitNone|InitEmpty for test_scrub_device_0 */
+  {
+    char device[] = "/dev/sda";
+    int r;
+    suppress_error = 0;
+    r = guestfs_blockdev_setrw (g, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_umount_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_lvm_remove_all (g);
+    if (r == -1)
+      return -1;
+  }
+  /* TestRun for scrub_device (0) */
+  {
+    char device[] = "/dev/sdc";
+    int r;
+    suppress_error = 0;
+    r = guestfs_scrub_device (g, device);
+    if (r == -1)
+      return -1;
+  }
+  return 0;
+}
+
+static int test_glob_expand_0_skip (void)
+{
+  const char *str;
+
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "glob_expand") == NULL;
+  str = getenv ("SKIP_TEST_GLOB_EXPAND_0");
+  if (str && strcmp (str, "1") == 0) return 1;
+  str = getenv ("SKIP_TEST_GLOB_EXPAND");
+  if (str && strcmp (str, "1") == 0) return 1;
+  return 0;
+}
+
+static int test_glob_expand_0 (void)
+{
+  if (test_glob_expand_0_skip ()) {
+    printf ("%s skipped (reason: environment variable set)\n", "test_glob_expand_0");
+    return 0;
+  }
+
+  /* InitBasicFS for test_glob_expand_0: create ext2 on /dev/sda1 */
+  {
+    char device[] = "/dev/sda";
+    int r;
+    suppress_error = 0;
+    r = guestfs_blockdev_setrw (g, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_umount_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_lvm_remove_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda";
+    char lines_0[] = ",";
+    char *lines[] = {
+      lines_0,
+      NULL
+    };
+    int r;
+    suppress_error = 0;
+    r = guestfs_sfdisk (g, device, 0, 0, 0, lines);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char fstype[] = "ext2";
+    char device[] = "/dev/sda1";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mkfs (g, fstype, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda1";
+    char mountpoint[] = "/";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mount (g, device, mountpoint);
+    if (r == -1)
+      return -1;
+  }
+  /* TestOutputList for glob_expand (0) */
+  {
+    char path[] = "/a/b/c";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mkdir_p (g, path);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char path[] = "/a/b/c/d";
+    int r;
+    suppress_error = 0;
+    r = guestfs_touch (g, path);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char path[] = "/a/b/c/e";
+    int r;
+    suppress_error = 0;
+    r = guestfs_touch (g, path);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char pattern[] = "/a/b/c/*";
+    char **r;
+    int i;
+    suppress_error = 0;
+    r = guestfs_glob_expand (g, pattern);
+    if (r == NULL)
+      return -1;
+    if (!r[0]) {
+      fprintf (stderr, "test_glob_expand_0: short list returned from command\n");
+      print_strings (r);
+      return -1;
+    }
+    {
+      char expected[] = "/a/b/c/d";
+      if (strcmp (r[0], expected) != 0) {
+        fprintf (stderr, "test_glob_expand_0: expected \"%s\" but got \"%s\"\n", expected, r[0]);
+        return -1;
+      }
+    }
+    if (!r[1]) {
+      fprintf (stderr, "test_glob_expand_0: short list returned from command\n");
+      print_strings (r);
+      return -1;
+    }
+    {
+      char expected[] = "/a/b/c/e";
+      if (strcmp (r[1], expected) != 0) {
+        fprintf (stderr, "test_glob_expand_0: expected \"%s\" but got \"%s\"\n", expected, r[1]);
+        return -1;
+      }
+    }
+    if (r[2] != NULL) {
+      fprintf (stderr, "test_glob_expand_0: extra elements returned from command\n");
+      print_strings (r);
+      return -1;
+    }
+    for (i = 0; r[i] != NULL; ++i)
+      free (r[i]);
+    free (r);
+  }
+  return 0;
+}
+
+static int test_glob_expand_1_skip (void)
+{
+  const char *str;
+
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "glob_expand") == NULL;
+  str = getenv ("SKIP_TEST_GLOB_EXPAND_1");
+  if (str && strcmp (str, "1") == 0) return 1;
+  str = getenv ("SKIP_TEST_GLOB_EXPAND");
+  if (str && strcmp (str, "1") == 0) return 1;
+  return 0;
+}
+
+static int test_glob_expand_1 (void)
+{
+  if (test_glob_expand_1_skip ()) {
+    printf ("%s skipped (reason: environment variable set)\n", "test_glob_expand_1");
+    return 0;
+  }
+
+  /* InitBasicFS for test_glob_expand_1: create ext2 on /dev/sda1 */
+  {
+    char device[] = "/dev/sda";
+    int r;
+    suppress_error = 0;
+    r = guestfs_blockdev_setrw (g, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_umount_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_lvm_remove_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda";
+    char lines_0[] = ",";
+    char *lines[] = {
+      lines_0,
+      NULL
+    };
+    int r;
+    suppress_error = 0;
+    r = guestfs_sfdisk (g, device, 0, 0, 0, lines);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char fstype[] = "ext2";
+    char device[] = "/dev/sda1";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mkfs (g, fstype, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda1";
+    char mountpoint[] = "/";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mount (g, device, mountpoint);
+    if (r == -1)
+      return -1;
+  }
+  /* TestOutputList for glob_expand (1) */
+  {
+    char path[] = "/a/b/c";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mkdir_p (g, path);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char path[] = "/a/b/c/d";
+    int r;
+    suppress_error = 0;
+    r = guestfs_touch (g, path);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char path[] = "/a/b/c/e";
+    int r;
+    suppress_error = 0;
+    r = guestfs_touch (g, path);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char pattern[] = "/a/*/c/*";
+    char **r;
+    int i;
+    suppress_error = 0;
+    r = guestfs_glob_expand (g, pattern);
+    if (r == NULL)
+      return -1;
+    if (!r[0]) {
+      fprintf (stderr, "test_glob_expand_1: short list returned from command\n");
+      print_strings (r);
+      return -1;
+    }
+    {
+      char expected[] = "/a/b/c/d";
+      if (strcmp (r[0], expected) != 0) {
+        fprintf (stderr, "test_glob_expand_1: expected \"%s\" but got \"%s\"\n", expected, r[0]);
+        return -1;
+      }
+    }
+    if (!r[1]) {
+      fprintf (stderr, "test_glob_expand_1: short list returned from command\n");
+      print_strings (r);
+      return -1;
+    }
+    {
+      char expected[] = "/a/b/c/e";
+      if (strcmp (r[1], expected) != 0) {
+        fprintf (stderr, "test_glob_expand_1: expected \"%s\" but got \"%s\"\n", expected, r[1]);
+        return -1;
+      }
+    }
+    if (r[2] != NULL) {
+      fprintf (stderr, "test_glob_expand_1: extra elements returned from command\n");
+      print_strings (r);
+      return -1;
+    }
+    for (i = 0; r[i] != NULL; ++i)
+      free (r[i]);
+    free (r);
+  }
+  return 0;
+}
+
+static int test_glob_expand_2_skip (void)
+{
+  const char *str;
+
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "glob_expand") == NULL;
+  str = getenv ("SKIP_TEST_GLOB_EXPAND_2");
+  if (str && strcmp (str, "1") == 0) return 1;
+  str = getenv ("SKIP_TEST_GLOB_EXPAND");
+  if (str && strcmp (str, "1") == 0) return 1;
+  return 0;
+}
+
+static int test_glob_expand_2 (void)
+{
+  if (test_glob_expand_2_skip ()) {
+    printf ("%s skipped (reason: environment variable set)\n", "test_glob_expand_2");
+    return 0;
+  }
+
+  /* InitBasicFS for test_glob_expand_2: create ext2 on /dev/sda1 */
+  {
+    char device[] = "/dev/sda";
+    int r;
+    suppress_error = 0;
+    r = guestfs_blockdev_setrw (g, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_umount_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_lvm_remove_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda";
+    char lines_0[] = ",";
+    char *lines[] = {
+      lines_0,
+      NULL
+    };
+    int r;
+    suppress_error = 0;
+    r = guestfs_sfdisk (g, device, 0, 0, 0, lines);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char fstype[] = "ext2";
+    char device[] = "/dev/sda1";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mkfs (g, fstype, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda1";
+    char mountpoint[] = "/";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mount (g, device, mountpoint);
+    if (r == -1)
+      return -1;
+  }
+  /* TestOutputList for glob_expand (2) */
+  {
+    char path[] = "/a/b/c";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mkdir_p (g, path);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char path[] = "/a/b/c/d";
+    int r;
+    suppress_error = 0;
+    r = guestfs_touch (g, path);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char path[] = "/a/b/c/e";
+    int r;
+    suppress_error = 0;
+    r = guestfs_touch (g, path);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char pattern[] = "/a/*/x/*";
+    char **r;
+    int i;
+    suppress_error = 0;
+    r = guestfs_glob_expand (g, pattern);
+    if (r == NULL)
+      return -1;
+    if (r[0] != NULL) {
+      fprintf (stderr, "test_glob_expand_2: extra elements returned from command\n");
+      print_strings (r);
+      return -1;
+    }
+    for (i = 0; r[i] != NULL; ++i)
+      free (r[i]);
+    free (r);
+  }
+  return 0;
+}
+
+static int test_ntfs_3g_probe_0_skip (void)
+{
+  const char *str;
+
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "ntfs_3g_probe") == NULL;
+  str = getenv ("SKIP_TEST_NTFS_3G_PROBE_0");
+  if (str && strcmp (str, "1") == 0) return 1;
+  str = getenv ("SKIP_TEST_NTFS_3G_PROBE");
+  if (str && strcmp (str, "1") == 0) return 1;
+  return 0;
+}
+
+static int test_ntfs_3g_probe_0 (void)
+{
+  if (test_ntfs_3g_probe_0_skip ()) {
+    printf ("%s skipped (reason: environment variable set)\n", "test_ntfs_3g_probe_0");
+    return 0;
+  }
+
+  /* InitNone|InitEmpty for test_ntfs_3g_probe_0 */
+  {
+    char device[] = "/dev/sda";
+    int r;
+    suppress_error = 0;
+    r = guestfs_blockdev_setrw (g, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_umount_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_lvm_remove_all (g);
+    if (r == -1)
+      return -1;
+  }
+  /* TestOutputInt for ntfs_3g_probe (0) */
+  {
+    char device[] = "/dev/sda";
+    char lines_0[] = ",";
+    char *lines[] = {
+      lines_0,
+      NULL
+    };
+    int r;
+    suppress_error = 0;
+    r = guestfs_sfdisk (g, device, 0, 0, 0, lines);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char fstype[] = "ntfs";
+    char device[] = "/dev/sda1";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mkfs (g, fstype, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda1";
+    int r;
+    suppress_error = 0;
+    r = guestfs_ntfs_3g_probe (g, 1, device);
+    if (r == -1)
+      return -1;
+    if (r != 0) {
+      fprintf (stderr, "test_ntfs_3g_probe_0: expected 0 but got %d\n",               (int) r);
+      return -1;
+    }
+  }
+  return 0;
+}
+
+static int test_ntfs_3g_probe_1_skip (void)
+{
+  const char *str;
+
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "ntfs_3g_probe") == NULL;
+  str = getenv ("SKIP_TEST_NTFS_3G_PROBE_1");
+  if (str && strcmp (str, "1") == 0) return 1;
+  str = getenv ("SKIP_TEST_NTFS_3G_PROBE");
+  if (str && strcmp (str, "1") == 0) return 1;
+  return 0;
+}
+
+static int test_ntfs_3g_probe_1 (void)
+{
+  if (test_ntfs_3g_probe_1_skip ()) {
+    printf ("%s skipped (reason: environment variable set)\n", "test_ntfs_3g_probe_1");
+    return 0;
+  }
+
+  /* InitNone|InitEmpty for test_ntfs_3g_probe_1 */
+  {
+    char device[] = "/dev/sda";
+    int r;
+    suppress_error = 0;
+    r = guestfs_blockdev_setrw (g, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_umount_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_lvm_remove_all (g);
+    if (r == -1)
+      return -1;
+  }
+  /* TestOutputInt for ntfs_3g_probe (1) */
+  {
+    char device[] = "/dev/sda";
+    char lines_0[] = ",";
+    char *lines[] = {
+      lines_0,
+      NULL
+    };
+    int r;
+    suppress_error = 0;
+    r = guestfs_sfdisk (g, device, 0, 0, 0, lines);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char fstype[] = "ext2";
+    char device[] = "/dev/sda1";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mkfs (g, fstype, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda1";
+    int r;
+    suppress_error = 0;
+    r = guestfs_ntfs_3g_probe (g, 1, device);
+    if (r == -1)
+      return -1;
+    if (r != 12) {
+      fprintf (stderr, "test_ntfs_3g_probe_1: expected 12 but got %d\n",               (int) r);
+      return -1;
+    }
+  }
+  return 0;
+}
+
+static int test_sleep_0_skip (void)
+{
+  const char *str;
+
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "sleep") == NULL;
+  str = getenv ("SKIP_TEST_SLEEP_0");
+  if (str && strcmp (str, "1") == 0) return 1;
+  str = getenv ("SKIP_TEST_SLEEP");
+  if (str && strcmp (str, "1") == 0) return 1;
+  return 0;
+}
+
+static int test_sleep_0 (void)
+{
+  if (test_sleep_0_skip ()) {
+    printf ("%s skipped (reason: environment variable set)\n", "test_sleep_0");
+    return 0;
+  }
+
+  /* InitNone|InitEmpty for test_sleep_0 */
+  {
+    char device[] = "/dev/sda";
+    int r;
+    suppress_error = 0;
+    r = guestfs_blockdev_setrw (g, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_umount_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_lvm_remove_all (g);
+    if (r == -1)
+      return -1;
+  }
+  /* TestRun for sleep (0) */
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_sleep (g, 1);
+    if (r == -1)
+      return -1;
+  }
+  return 0;
 }
 
 static int test_find_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "find") == NULL;
   str = getenv ("SKIP_TEST_FIND_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_FIND");
@@ -141,14 +1351,13 @@ static int test_find_0_skip (void)
 static int test_find_0 (void)
 {
   if (test_find_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_find_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_find_0");
     return 0;
   }
 
   /* InitBasicFS for test_find_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -171,7 +1380,6 @@ static int test_find_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -186,7 +1394,6 @@ static int test_find_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -195,7 +1402,6 @@ static int test_find_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -240,6 +1446,9 @@ static int test_find_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "find") == NULL;
   str = getenv ("SKIP_TEST_FIND_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_FIND");
@@ -250,14 +1459,13 @@ static int test_find_1_skip (void)
 static int test_find_1 (void)
 {
   if (test_find_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_find_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_find_1");
     return 0;
   }
 
   /* InitBasicFS for test_find_1: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -280,7 +1488,6 @@ static int test_find_1 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -295,7 +1502,6 @@ static int test_find_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -304,7 +1510,6 @@ static int test_find_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -409,6 +1614,9 @@ static int test_find_2_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "find") == NULL;
   str = getenv ("SKIP_TEST_FIND_2");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_FIND");
@@ -419,14 +1627,13 @@ static int test_find_2_skip (void)
 static int test_find_2 (void)
 {
   if (test_find_2_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_find_2");
+    printf ("%s skipped (reason: environment variable set)\n", "test_find_2");
     return 0;
   }
 
   /* InitBasicFS for test_find_2: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -449,7 +1656,6 @@ static int test_find_2 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -464,7 +1670,6 @@ static int test_find_2 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -473,7 +1678,6 @@ static int test_find_2 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -546,6 +1750,9 @@ static int test_lvresize_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "lvresize") == NULL;
   str = getenv ("SKIP_TEST_LVRESIZE_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_LVRESIZE");
@@ -556,14 +1763,13 @@ static int test_lvresize_0_skip (void)
 static int test_lvresize_0 (void)
 {
   if (test_lvresize_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_lvresize_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_lvresize_0");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_lvresize_0 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -588,7 +1794,6 @@ static int test_lvresize_0 (void)
   char expected[] = "test content";
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -602,7 +1807,6 @@ static int test_lvresize_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -612,7 +1816,6 @@ static int test_lvresize_0 (void)
   {
     char volgroup[] = "VG";
     char physvols_0[] = "/dev/sda1";
-    physvols_0[5] = devchar;
     char *physvols[] = {
       physvols_0,
       NULL
@@ -720,6 +1923,9 @@ static int test_zerofree_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "zerofree") == NULL;
   str = getenv ("SKIP_TEST_ZEROFREE_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_ZEROFREE");
@@ -730,14 +1936,13 @@ static int test_zerofree_0_skip (void)
 static int test_zerofree_0 (void)
 {
   if (test_zerofree_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_zerofree_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_zerofree_0");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_zerofree_0 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -762,7 +1967,6 @@ static int test_zerofree_0 (void)
   char expected[] = "test file";
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -777,7 +1981,6 @@ static int test_zerofree_0 (void)
   {
     char fstype[] = "ext3";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -786,7 +1989,6 @@ static int test_zerofree_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -805,7 +2007,6 @@ static int test_zerofree_0 (void)
   }
   {
     char pathordevice[] = "/dev/sda1";
-    pathordevice[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_umount (g, pathordevice);
@@ -814,7 +2015,6 @@ static int test_zerofree_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_zerofree (g, device);
@@ -823,7 +2023,6 @@ static int test_zerofree_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -851,6 +2050,9 @@ static int test_hexdump_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "hexdump") == NULL;
   str = getenv ("SKIP_TEST_HEXDUMP_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_HEXDUMP");
@@ -861,14 +2063,13 @@ static int test_hexdump_0_skip (void)
 static int test_hexdump_0 (void)
 {
   if (test_hexdump_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_hexdump_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_hexdump_0");
     return 0;
   }
 
   /* InitBasicFS for test_hexdump_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -891,7 +2092,6 @@ static int test_hexdump_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -906,7 +2106,6 @@ static int test_hexdump_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -915,7 +2114,6 @@ static int test_hexdump_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -950,10 +2148,112 @@ static int test_hexdump_0 (void)
   return 0;
 }
 
+static int test_hexdump_1_skip (void)
+{
+  const char *str;
+
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "hexdump") == NULL;
+  str = getenv ("SKIP_TEST_HEXDUMP_1");
+  if (str && strcmp (str, "1") == 0) return 1;
+  str = getenv ("SKIP_TEST_HEXDUMP");
+  if (str && strcmp (str, "1") == 0) return 1;
+  return 0;
+}
+
+static int test_hexdump_1 (void)
+{
+  if (test_hexdump_1_skip ()) {
+    printf ("%s skipped (reason: environment variable set)\n", "test_hexdump_1");
+    return 0;
+  }
+
+  /* InitBasicFS for test_hexdump_1: create ext2 on /dev/sda1 */
+  {
+    char device[] = "/dev/sda";
+    int r;
+    suppress_error = 0;
+    r = guestfs_blockdev_setrw (g, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_umount_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_lvm_remove_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda";
+    char lines_0[] = ",";
+    char *lines[] = {
+      lines_0,
+      NULL
+    };
+    int r;
+    suppress_error = 0;
+    r = guestfs_sfdisk (g, device, 0, 0, 0, lines);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char fstype[] = "ext2";
+    char device[] = "/dev/sda1";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mkfs (g, fstype, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda1";
+    char mountpoint[] = "/";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mount (g, device, mountpoint);
+    if (r == -1)
+      return -1;
+  }
+  /* TestRun for hexdump (1) */
+  {
+    char options[] = "ro";
+    char vfstype[] = "squashfs";
+    char device[] = "/dev/sdd";
+    char mountpoint[] = "/";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mount_vfs (g, options, vfstype, device, mountpoint);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char path[] = "/100krandom";
+    char *r;
+    suppress_error = 0;
+    r = guestfs_hexdump (g, path);
+    if (r == NULL)
+      return -1;
+    free (r);
+  }
+  return 0;
+}
+
 static int test_strings_e_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "strings_e") == NULL;
   str = getenv ("SKIP_TEST_STRINGS_E_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_STRINGS_E");
@@ -964,14 +2264,13 @@ static int test_strings_e_0_skip (void)
 static int test_strings_e_0 (void)
 {
   if (test_strings_e_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_strings_e_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_strings_e_0");
     return 0;
   }
 
   /* InitBasicFS for test_strings_e_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -994,7 +2293,6 @@ static int test_strings_e_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -1009,7 +2307,6 @@ static int test_strings_e_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -1018,7 +2315,6 @@ static int test_strings_e_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -1061,6 +2357,9 @@ static int test_strings_e_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "strings_e") == NULL;
   str = getenv ("SKIP_TEST_STRINGS_E_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_STRINGS_E");
@@ -1071,7 +2370,7 @@ static int test_strings_e_1_skip (void)
 static int test_strings_e_1 (void)
 {
   if (test_strings_e_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_strings_e_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_strings_e_1");
     return 0;
   }
 
@@ -1083,6 +2382,9 @@ static int test_strings_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "strings") == NULL;
   str = getenv ("SKIP_TEST_STRINGS_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_STRINGS");
@@ -1093,14 +2395,13 @@ static int test_strings_0_skip (void)
 static int test_strings_0 (void)
 {
   if (test_strings_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_strings_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_strings_0");
     return 0;
   }
 
   /* InitBasicFS for test_strings_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -1123,7 +2424,6 @@ static int test_strings_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -1138,7 +2438,6 @@ static int test_strings_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -1147,7 +2446,6 @@ static int test_strings_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -1213,6 +2511,9 @@ static int test_strings_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "strings") == NULL;
   str = getenv ("SKIP_TEST_STRINGS_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_STRINGS");
@@ -1223,14 +2524,13 @@ static int test_strings_1_skip (void)
 static int test_strings_1 (void)
 {
   if (test_strings_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_strings_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_strings_1");
     return 0;
   }
 
   /* InitBasicFS for test_strings_1: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -1253,7 +2553,6 @@ static int test_strings_1 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -1268,7 +2567,6 @@ static int test_strings_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -1277,7 +2575,6 @@ static int test_strings_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -1318,6 +2615,9 @@ static int test_equal_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "equal") == NULL;
   str = getenv ("SKIP_TEST_EQUAL_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_EQUAL");
@@ -1328,14 +2628,13 @@ static int test_equal_0_skip (void)
 static int test_equal_0 (void)
 {
   if (test_equal_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_equal_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_equal_0");
     return 0;
   }
 
   /* InitBasicFS for test_equal_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -1358,7 +2657,6 @@ static int test_equal_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -1373,7 +2671,6 @@ static int test_equal_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -1382,7 +2679,6 @@ static int test_equal_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -1429,6 +2725,9 @@ static int test_equal_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "equal") == NULL;
   str = getenv ("SKIP_TEST_EQUAL_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_EQUAL");
@@ -1439,14 +2738,13 @@ static int test_equal_1_skip (void)
 static int test_equal_1 (void)
 {
   if (test_equal_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_equal_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_equal_1");
     return 0;
   }
 
   /* InitBasicFS for test_equal_1: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -1469,7 +2767,6 @@ static int test_equal_1 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -1484,7 +2781,6 @@ static int test_equal_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -1493,7 +2789,6 @@ static int test_equal_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -1540,6 +2835,9 @@ static int test_equal_2_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "equal") == NULL;
   str = getenv ("SKIP_TEST_EQUAL_2");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_EQUAL");
@@ -1550,14 +2848,13 @@ static int test_equal_2_skip (void)
 static int test_equal_2 (void)
 {
   if (test_equal_2_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_equal_2");
+    printf ("%s skipped (reason: environment variable set)\n", "test_equal_2");
     return 0;
   }
 
   /* InitBasicFS for test_equal_2: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -1580,7 +2877,6 @@ static int test_equal_2 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -1595,7 +2891,6 @@ static int test_equal_2 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -1604,7 +2899,6 @@ static int test_equal_2 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -1629,6 +2923,9 @@ static int test_ping_daemon_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "ping_daemon") == NULL;
   str = getenv ("SKIP_TEST_PING_DAEMON_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_PING_DAEMON");
@@ -1639,14 +2936,13 @@ static int test_ping_daemon_0_skip (void)
 static int test_ping_daemon_0 (void)
 {
   if (test_ping_daemon_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_ping_daemon_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_ping_daemon_0");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_ping_daemon_0 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -1682,6 +2978,9 @@ static int test_dmesg_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "dmesg") == NULL;
   str = getenv ("SKIP_TEST_DMESG_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_DMESG");
@@ -1692,14 +2991,13 @@ static int test_dmesg_0_skip (void)
 static int test_dmesg_0 (void)
 {
   if (test_dmesg_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_dmesg_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_dmesg_0");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_dmesg_0 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -1736,6 +3034,9 @@ static int test_drop_caches_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "drop_caches") == NULL;
   str = getenv ("SKIP_TEST_DROP_CACHES_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_DROP_CACHES");
@@ -1746,14 +3047,13 @@ static int test_drop_caches_0_skip (void)
 static int test_drop_caches_0 (void)
 {
   if (test_drop_caches_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_drop_caches_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_drop_caches_0");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_drop_caches_0 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -1789,6 +3089,9 @@ static int test_mv_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "mv") == NULL;
   str = getenv ("SKIP_TEST_MV_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_MV");
@@ -1799,14 +3102,13 @@ static int test_mv_0_skip (void)
 static int test_mv_0 (void)
 {
   if (test_mv_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_mv_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_mv_0");
     return 0;
   }
 
   /* InitBasicFS for test_mv_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -1829,7 +3131,6 @@ static int test_mv_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -1844,7 +3145,6 @@ static int test_mv_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -1853,7 +3153,6 @@ static int test_mv_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -1901,6 +3200,9 @@ static int test_mv_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "mv") == NULL;
   str = getenv ("SKIP_TEST_MV_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_MV");
@@ -1911,14 +3213,13 @@ static int test_mv_1_skip (void)
 static int test_mv_1 (void)
 {
   if (test_mv_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_mv_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_mv_1");
     return 0;
   }
 
   /* InitBasicFS for test_mv_1: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -1941,7 +3242,6 @@ static int test_mv_1 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -1956,7 +3256,6 @@ static int test_mv_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -1965,7 +3264,6 @@ static int test_mv_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -2011,6 +3309,9 @@ static int test_cp_a_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "cp_a") == NULL;
   str = getenv ("SKIP_TEST_CP_A_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_CP_A");
@@ -2021,14 +3322,13 @@ static int test_cp_a_0_skip (void)
 static int test_cp_a_0 (void)
 {
   if (test_cp_a_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_cp_a_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_cp_a_0");
     return 0;
   }
 
   /* InitBasicFS for test_cp_a_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -2051,7 +3351,6 @@ static int test_cp_a_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -2066,7 +3365,6 @@ static int test_cp_a_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -2075,7 +3373,6 @@ static int test_cp_a_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -2139,6 +3436,9 @@ static int test_cp_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "cp") == NULL;
   str = getenv ("SKIP_TEST_CP_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_CP");
@@ -2149,14 +3449,13 @@ static int test_cp_0_skip (void)
 static int test_cp_0 (void)
 {
   if (test_cp_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_cp_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_cp_0");
     return 0;
   }
 
   /* InitBasicFS for test_cp_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -2179,7 +3478,6 @@ static int test_cp_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -2194,7 +3492,6 @@ static int test_cp_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -2203,7 +3500,6 @@ static int test_cp_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -2251,6 +3547,9 @@ static int test_cp_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "cp") == NULL;
   str = getenv ("SKIP_TEST_CP_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_CP");
@@ -2261,14 +3560,13 @@ static int test_cp_1_skip (void)
 static int test_cp_1 (void)
 {
   if (test_cp_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_cp_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_cp_1");
     return 0;
   }
 
   /* InitBasicFS for test_cp_1: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -2291,7 +3589,6 @@ static int test_cp_1 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -2306,7 +3603,6 @@ static int test_cp_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -2315,7 +3611,6 @@ static int test_cp_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -2361,6 +3656,9 @@ static int test_cp_2_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "cp") == NULL;
   str = getenv ("SKIP_TEST_CP_2");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_CP");
@@ -2371,14 +3669,13 @@ static int test_cp_2_skip (void)
 static int test_cp_2 (void)
 {
   if (test_cp_2_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_cp_2");
+    printf ("%s skipped (reason: environment variable set)\n", "test_cp_2");
     return 0;
   }
 
   /* InitBasicFS for test_cp_2: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -2401,7 +3698,6 @@ static int test_cp_2 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -2416,7 +3712,6 @@ static int test_cp_2 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -2425,7 +3720,6 @@ static int test_cp_2 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -2481,6 +3775,9 @@ static int test_grub_install_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "grub_install") == NULL;
   str = getenv ("SKIP_TEST_GRUB_INSTALL_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_GRUB_INSTALL");
@@ -2491,14 +3788,13 @@ static int test_grub_install_0_skip (void)
 static int test_grub_install_0 (void)
 {
   if (test_grub_install_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_grub_install_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_grub_install_0");
     return 0;
   }
 
   /* InitBasicFS for test_grub_install_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -2521,7 +3817,6 @@ static int test_grub_install_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -2536,7 +3831,6 @@ static int test_grub_install_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -2545,7 +3839,6 @@ static int test_grub_install_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -2557,7 +3850,6 @@ static int test_grub_install_0 (void)
   {
     char root[] = "/";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_grub_install (g, root, device);
@@ -2583,6 +3875,9 @@ static int test_zero_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "zero") == NULL;
   str = getenv ("SKIP_TEST_ZERO_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_ZERO");
@@ -2593,14 +3888,13 @@ static int test_zero_0_skip (void)
 static int test_zero_0 (void)
 {
   if (test_zero_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_zero_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_zero_0");
     return 0;
   }
 
   /* InitBasicFS for test_zero_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -2623,7 +3917,6 @@ static int test_zero_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -2638,7 +3931,6 @@ static int test_zero_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -2647,7 +3939,6 @@ static int test_zero_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -2659,7 +3950,6 @@ static int test_zero_0 (void)
   char expected[] = "data";
   {
     char pathordevice[] = "/dev/sda1";
-    pathordevice[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_umount (g, pathordevice);
@@ -2668,7 +3958,6 @@ static int test_zero_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_zero (g, device);
@@ -2677,7 +3966,6 @@ static int test_zero_0 (void)
   }
   {
     char path[] = "/dev/sda1";
-    path[5] = devchar;
     char *r;
     suppress_error = 0;
     r = guestfs_file (g, path);
@@ -2696,6 +3984,9 @@ static int test_fsck_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "fsck") == NULL;
   str = getenv ("SKIP_TEST_FSCK_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_FSCK");
@@ -2706,14 +3997,13 @@ static int test_fsck_0_skip (void)
 static int test_fsck_0 (void)
 {
   if (test_fsck_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_fsck_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_fsck_0");
     return 0;
   }
 
   /* InitBasicFS for test_fsck_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -2736,7 +4026,6 @@ static int test_fsck_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -2751,7 +4040,6 @@ static int test_fsck_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -2760,7 +4048,6 @@ static int test_fsck_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -2771,7 +4058,6 @@ static int test_fsck_0 (void)
   /* TestOutputInt for fsck (0) */
   {
     char pathordevice[] = "/dev/sda1";
-    pathordevice[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_umount (g, pathordevice);
@@ -2781,7 +4067,6 @@ static int test_fsck_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_fsck (g, fstype, device);
@@ -2799,6 +4084,9 @@ static int test_fsck_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "fsck") == NULL;
   str = getenv ("SKIP_TEST_FSCK_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_FSCK");
@@ -2809,14 +4097,13 @@ static int test_fsck_1_skip (void)
 static int test_fsck_1 (void)
 {
   if (test_fsck_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_fsck_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_fsck_1");
     return 0;
   }
 
   /* InitBasicFS for test_fsck_1: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -2839,7 +4126,6 @@ static int test_fsck_1 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -2854,7 +4140,6 @@ static int test_fsck_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -2863,7 +4148,6 @@ static int test_fsck_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -2874,7 +4158,6 @@ static int test_fsck_1 (void)
   /* TestOutputInt for fsck (1) */
   {
     char pathordevice[] = "/dev/sda1";
-    pathordevice[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_umount (g, pathordevice);
@@ -2883,7 +4166,6 @@ static int test_fsck_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_zero (g, device);
@@ -2893,7 +4175,6 @@ static int test_fsck_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_fsck (g, fstype, device);
@@ -2911,6 +4192,9 @@ static int test_set_e2uuid_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "set_e2uuid") == NULL;
   str = getenv ("SKIP_TEST_SET_E2UUID_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_SET_E2UUID");
@@ -2921,14 +4205,13 @@ static int test_set_e2uuid_0_skip (void)
 static int test_set_e2uuid_0 (void)
 {
   if (test_set_e2uuid_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_set_e2uuid_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_set_e2uuid_0");
     return 0;
   }
 
   /* InitBasicFS for test_set_e2uuid_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -2951,7 +4234,6 @@ static int test_set_e2uuid_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -2966,7 +4248,6 @@ static int test_set_e2uuid_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -2975,7 +4256,6 @@ static int test_set_e2uuid_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -2987,7 +4267,6 @@ static int test_set_e2uuid_0 (void)
   char expected[] = "a3a61220-882b-4f61-89f4-cf24dcc7297d";
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char uuid[] = "a3a61220-882b-4f61-89f4-cf24dcc7297d";
     int r;
     suppress_error = 0;
@@ -2997,7 +4276,6 @@ static int test_set_e2uuid_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char *r;
     suppress_error = 0;
     r = guestfs_get_e2uuid (g, device);
@@ -3016,6 +4294,9 @@ static int test_set_e2uuid_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "set_e2uuid") == NULL;
   str = getenv ("SKIP_TEST_SET_E2UUID_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_SET_E2UUID");
@@ -3026,14 +4307,13 @@ static int test_set_e2uuid_1_skip (void)
 static int test_set_e2uuid_1 (void)
 {
   if (test_set_e2uuid_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_set_e2uuid_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_set_e2uuid_1");
     return 0;
   }
 
   /* InitBasicFS for test_set_e2uuid_1: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -3056,7 +4336,6 @@ static int test_set_e2uuid_1 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -3071,7 +4350,6 @@ static int test_set_e2uuid_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -3080,7 +4358,6 @@ static int test_set_e2uuid_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -3092,7 +4369,6 @@ static int test_set_e2uuid_1 (void)
   char expected[] = "";
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char uuid[] = "clear";
     int r;
     suppress_error = 0;
@@ -3102,7 +4378,6 @@ static int test_set_e2uuid_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char *r;
     suppress_error = 0;
     r = guestfs_get_e2uuid (g, device);
@@ -3121,6 +4396,9 @@ static int test_set_e2uuid_2_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "set_e2uuid") == NULL;
   str = getenv ("SKIP_TEST_SET_E2UUID_2");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_SET_E2UUID");
@@ -3131,14 +4409,13 @@ static int test_set_e2uuid_2_skip (void)
 static int test_set_e2uuid_2 (void)
 {
   if (test_set_e2uuid_2_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_set_e2uuid_2");
+    printf ("%s skipped (reason: environment variable set)\n", "test_set_e2uuid_2");
     return 0;
   }
 
   /* InitBasicFS for test_set_e2uuid_2: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -3161,7 +4438,6 @@ static int test_set_e2uuid_2 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -3176,7 +4452,6 @@ static int test_set_e2uuid_2 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -3185,7 +4460,6 @@ static int test_set_e2uuid_2 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -3196,7 +4470,6 @@ static int test_set_e2uuid_2 (void)
   /* TestRun for set_e2uuid (2) */
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char uuid[] = "random";
     int r;
     suppress_error = 0;
@@ -3211,6 +4484,9 @@ static int test_set_e2uuid_3_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "set_e2uuid") == NULL;
   str = getenv ("SKIP_TEST_SET_E2UUID_3");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_SET_E2UUID");
@@ -3221,14 +4497,13 @@ static int test_set_e2uuid_3_skip (void)
 static int test_set_e2uuid_3 (void)
 {
   if (test_set_e2uuid_3_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_set_e2uuid_3");
+    printf ("%s skipped (reason: environment variable set)\n", "test_set_e2uuid_3");
     return 0;
   }
 
   /* InitBasicFS for test_set_e2uuid_3: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -3251,7 +4526,6 @@ static int test_set_e2uuid_3 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -3266,7 +4540,6 @@ static int test_set_e2uuid_3 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -3275,7 +4548,6 @@ static int test_set_e2uuid_3 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -3286,7 +4558,6 @@ static int test_set_e2uuid_3 (void)
   /* TestRun for set_e2uuid (3) */
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char uuid[] = "time";
     int r;
     suppress_error = 0;
@@ -3301,6 +4572,9 @@ static int test_set_e2label_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "set_e2label") == NULL;
   str = getenv ("SKIP_TEST_SET_E2LABEL_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_SET_E2LABEL");
@@ -3311,14 +4585,13 @@ static int test_set_e2label_0_skip (void)
 static int test_set_e2label_0 (void)
 {
   if (test_set_e2label_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_set_e2label_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_set_e2label_0");
     return 0;
   }
 
   /* InitBasicFS for test_set_e2label_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -3341,7 +4614,6 @@ static int test_set_e2label_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -3356,7 +4628,6 @@ static int test_set_e2label_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -3365,7 +4636,6 @@ static int test_set_e2label_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -3377,7 +4647,6 @@ static int test_set_e2label_0 (void)
   char expected[] = "testlabel";
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char label[] = "testlabel";
     int r;
     suppress_error = 0;
@@ -3387,7 +4656,6 @@ static int test_set_e2label_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char *r;
     suppress_error = 0;
     r = guestfs_get_e2label (g, device);
@@ -3406,6 +4674,9 @@ static int test_pvremove_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "pvremove") == NULL;
   str = getenv ("SKIP_TEST_PVREMOVE_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_PVREMOVE");
@@ -3416,14 +4687,13 @@ static int test_pvremove_0_skip (void)
 static int test_pvremove_0 (void)
 {
   if (test_pvremove_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_pvremove_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_pvremove_0");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_pvremove_0 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -3444,10 +4714,9 @@ static int test_pvremove_0 (void)
     if (r == -1)
       return -1;
   }
-  /* TestOutputList for pvremove (0) */
+  /* TestOutputListOfDevices for pvremove (0) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -3461,7 +4730,6 @@ static int test_pvremove_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -3471,7 +4739,6 @@ static int test_pvremove_0 (void)
   {
     char volgroup[] = "VG";
     char physvols_0[] = "/dev/sda1";
-    physvols_0[5] = devchar;
     char *physvols[] = {
       physvols_0,
       NULL
@@ -3510,7 +4777,6 @@ static int test_pvremove_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvremove (g, device);
@@ -3540,6 +4806,9 @@ static int test_pvremove_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "pvremove") == NULL;
   str = getenv ("SKIP_TEST_PVREMOVE_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_PVREMOVE");
@@ -3550,14 +4819,13 @@ static int test_pvremove_1_skip (void)
 static int test_pvremove_1 (void)
 {
   if (test_pvremove_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_pvremove_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_pvremove_1");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_pvremove_1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -3578,10 +4846,9 @@ static int test_pvremove_1 (void)
     if (r == -1)
       return -1;
   }
-  /* TestOutputList for pvremove (1) */
+  /* TestOutputListOfDevices for pvremove (1) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -3595,7 +4862,6 @@ static int test_pvremove_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -3605,7 +4871,6 @@ static int test_pvremove_1 (void)
   {
     char volgroup[] = "VG";
     char physvols_0[] = "/dev/sda1";
-    physvols_0[5] = devchar;
     char *physvols[] = {
       physvols_0,
       NULL
@@ -3644,7 +4909,6 @@ static int test_pvremove_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvremove (g, device);
@@ -3674,6 +4938,9 @@ static int test_pvremove_2_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "pvremove") == NULL;
   str = getenv ("SKIP_TEST_PVREMOVE_2");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_PVREMOVE");
@@ -3684,14 +4951,13 @@ static int test_pvremove_2_skip (void)
 static int test_pvremove_2 (void)
 {
   if (test_pvremove_2_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_pvremove_2");
+    printf ("%s skipped (reason: environment variable set)\n", "test_pvremove_2");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_pvremove_2 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -3712,10 +4978,9 @@ static int test_pvremove_2 (void)
     if (r == -1)
       return -1;
   }
-  /* TestOutputList for pvremove (2) */
+  /* TestOutputListOfDevices for pvremove (2) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -3729,7 +4994,6 @@ static int test_pvremove_2 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -3739,7 +5003,6 @@ static int test_pvremove_2 (void)
   {
     char volgroup[] = "VG";
     char physvols_0[] = "/dev/sda1";
-    physvols_0[5] = devchar;
     char *physvols[] = {
       physvols_0,
       NULL
@@ -3778,7 +5041,6 @@ static int test_pvremove_2 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvremove (g, device);
@@ -3808,6 +5070,9 @@ static int test_vgremove_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "vgremove") == NULL;
   str = getenv ("SKIP_TEST_VGREMOVE_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_VGREMOVE");
@@ -3818,14 +5083,13 @@ static int test_vgremove_0_skip (void)
 static int test_vgremove_0 (void)
 {
   if (test_vgremove_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_vgremove_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_vgremove_0");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_vgremove_0 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -3849,7 +5113,6 @@ static int test_vgremove_0 (void)
   /* TestOutputList for vgremove (0) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -3863,7 +5126,6 @@ static int test_vgremove_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -3873,7 +5135,6 @@ static int test_vgremove_0 (void)
   {
     char volgroup[] = "VG";
     char physvols_0[] = "/dev/sda1";
-    physvols_0[5] = devchar;
     char *physvols[] = {
       physvols_0,
       NULL
@@ -3933,6 +5194,9 @@ static int test_vgremove_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "vgremove") == NULL;
   str = getenv ("SKIP_TEST_VGREMOVE_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_VGREMOVE");
@@ -3943,14 +5207,13 @@ static int test_vgremove_1_skip (void)
 static int test_vgremove_1 (void)
 {
   if (test_vgremove_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_vgremove_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_vgremove_1");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_vgremove_1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -3974,7 +5237,6 @@ static int test_vgremove_1 (void)
   /* TestOutputList for vgremove (1) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -3988,7 +5250,6 @@ static int test_vgremove_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -3998,7 +5259,6 @@ static int test_vgremove_1 (void)
   {
     char volgroup[] = "VG";
     char physvols_0[] = "/dev/sda1";
-    physvols_0[5] = devchar;
     char *physvols[] = {
       physvols_0,
       NULL
@@ -4058,6 +5318,9 @@ static int test_lvremove_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "lvremove") == NULL;
   str = getenv ("SKIP_TEST_LVREMOVE_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_LVREMOVE");
@@ -4068,14 +5331,13 @@ static int test_lvremove_0_skip (void)
 static int test_lvremove_0 (void)
 {
   if (test_lvremove_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_lvremove_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_lvremove_0");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_lvremove_0 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -4099,7 +5361,6 @@ static int test_lvremove_0 (void)
   /* TestOutputList for lvremove (0) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -4113,7 +5374,6 @@ static int test_lvremove_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -4123,7 +5383,6 @@ static int test_lvremove_0 (void)
   {
     char volgroup[] = "VG";
     char physvols_0[] = "/dev/sda1";
-    physvols_0[5] = devchar;
     char *physvols[] = {
       physvols_0,
       NULL
@@ -4195,6 +5454,9 @@ static int test_lvremove_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "lvremove") == NULL;
   str = getenv ("SKIP_TEST_LVREMOVE_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_LVREMOVE");
@@ -4205,14 +5467,13 @@ static int test_lvremove_1_skip (void)
 static int test_lvremove_1 (void)
 {
   if (test_lvremove_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_lvremove_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_lvremove_1");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_lvremove_1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -4236,7 +5497,6 @@ static int test_lvremove_1 (void)
   /* TestOutputList for lvremove (1) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -4250,7 +5510,6 @@ static int test_lvremove_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -4260,7 +5519,6 @@ static int test_lvremove_1 (void)
   {
     char volgroup[] = "VG";
     char physvols_0[] = "/dev/sda1";
-    physvols_0[5] = devchar;
     char *physvols[] = {
       physvols_0,
       NULL
@@ -4320,6 +5578,9 @@ static int test_lvremove_2_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "lvremove") == NULL;
   str = getenv ("SKIP_TEST_LVREMOVE_2");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_LVREMOVE");
@@ -4330,14 +5591,13 @@ static int test_lvremove_2_skip (void)
 static int test_lvremove_2 (void)
 {
   if (test_lvremove_2_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_lvremove_2");
+    printf ("%s skipped (reason: environment variable set)\n", "test_lvremove_2");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_lvremove_2 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -4361,7 +5621,6 @@ static int test_lvremove_2 (void)
   /* TestOutputList for lvremove (2) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -4375,7 +5634,6 @@ static int test_lvremove_2 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -4385,7 +5643,6 @@ static int test_lvremove_2 (void)
   {
     char volgroup[] = "VG";
     char physvols_0[] = "/dev/sda1";
-    physvols_0[5] = devchar;
     char *physvols[] = {
       physvols_0,
       NULL
@@ -4457,6 +5714,9 @@ static int test_mount_ro_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "mount_ro") == NULL;
   str = getenv ("SKIP_TEST_MOUNT_RO_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_MOUNT_RO");
@@ -4467,14 +5727,13 @@ static int test_mount_ro_0_skip (void)
 static int test_mount_ro_0 (void)
 {
   if (test_mount_ro_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_mount_ro_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_mount_ro_0");
     return 0;
   }
 
   /* InitBasicFS for test_mount_ro_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -4497,7 +5756,6 @@ static int test_mount_ro_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -4512,7 +5770,6 @@ static int test_mount_ro_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -4521,7 +5778,6 @@ static int test_mount_ro_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -4540,7 +5796,6 @@ static int test_mount_ro_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -4563,6 +5818,9 @@ static int test_mount_ro_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "mount_ro") == NULL;
   str = getenv ("SKIP_TEST_MOUNT_RO_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_MOUNT_RO");
@@ -4573,14 +5831,13 @@ static int test_mount_ro_1_skip (void)
 static int test_mount_ro_1 (void)
 {
   if (test_mount_ro_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_mount_ro_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_mount_ro_1");
     return 0;
   }
 
   /* InitBasicFS for test_mount_ro_1: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -4603,7 +5860,6 @@ static int test_mount_ro_1 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -4618,7 +5874,6 @@ static int test_mount_ro_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -4627,7 +5882,6 @@ static int test_mount_ro_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -4656,7 +5910,6 @@ static int test_mount_ro_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -4684,6 +5937,9 @@ static int test_tgz_in_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "tgz_in") == NULL;
   str = getenv ("SKIP_TEST_TGZ_IN_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_TGZ_IN");
@@ -4694,14 +5950,13 @@ static int test_tgz_in_0_skip (void)
 static int test_tgz_in_0 (void)
 {
   if (test_tgz_in_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_tgz_in_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_tgz_in_0");
     return 0;
   }
 
   /* InitBasicFS for test_tgz_in_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -4724,7 +5979,6 @@ static int test_tgz_in_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -4739,7 +5993,6 @@ static int test_tgz_in_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -4748,7 +6001,6 @@ static int test_tgz_in_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -4762,7 +6014,7 @@ static int test_tgz_in_0 (void)
     char directory[] = "/";
     int r;
     suppress_error = 0;
-    r = guestfs_tgz_in (g, "images/helloworld.tar.gz", directory);
+    r = guestfs_tgz_in (g, "../images/helloworld.tar.gz", directory);
     if (r == -1)
       return -1;
   }
@@ -4786,6 +6038,9 @@ static int test_tar_in_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "tar_in") == NULL;
   str = getenv ("SKIP_TEST_TAR_IN_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_TAR_IN");
@@ -4796,14 +6051,13 @@ static int test_tar_in_0_skip (void)
 static int test_tar_in_0 (void)
 {
   if (test_tar_in_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_tar_in_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_tar_in_0");
     return 0;
   }
 
   /* InitBasicFS for test_tar_in_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -4826,7 +6080,6 @@ static int test_tar_in_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -4841,7 +6094,6 @@ static int test_tar_in_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -4850,7 +6102,6 @@ static int test_tar_in_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -4864,7 +6115,7 @@ static int test_tar_in_0 (void)
     char directory[] = "/";
     int r;
     suppress_error = 0;
-    r = guestfs_tar_in (g, "images/helloworld.tar", directory);
+    r = guestfs_tar_in (g, "../images/helloworld.tar", directory);
     if (r == -1)
       return -1;
   }
@@ -4888,6 +6139,9 @@ static int test_checksum_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "checksum") == NULL;
   str = getenv ("SKIP_TEST_CHECKSUM_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_CHECKSUM");
@@ -4898,14 +6152,13 @@ static int test_checksum_0_skip (void)
 static int test_checksum_0 (void)
 {
   if (test_checksum_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_checksum_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_checksum_0");
     return 0;
   }
 
   /* InitBasicFS for test_checksum_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -4928,7 +6181,6 @@ static int test_checksum_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -4943,7 +6195,6 @@ static int test_checksum_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -4952,7 +6203,6 @@ static int test_checksum_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -4992,6 +6242,9 @@ static int test_checksum_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "checksum") == NULL;
   str = getenv ("SKIP_TEST_CHECKSUM_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_CHECKSUM");
@@ -5002,14 +6255,13 @@ static int test_checksum_1_skip (void)
 static int test_checksum_1 (void)
 {
   if (test_checksum_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_checksum_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_checksum_1");
     return 0;
   }
 
   /* InitBasicFS for test_checksum_1: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -5032,7 +6284,6 @@ static int test_checksum_1 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -5047,7 +6298,6 @@ static int test_checksum_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -5056,7 +6306,6 @@ static int test_checksum_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -5082,6 +6331,9 @@ static int test_checksum_2_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "checksum") == NULL;
   str = getenv ("SKIP_TEST_CHECKSUM_2");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_CHECKSUM");
@@ -5092,14 +6344,13 @@ static int test_checksum_2_skip (void)
 static int test_checksum_2 (void)
 {
   if (test_checksum_2_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_checksum_2");
+    printf ("%s skipped (reason: environment variable set)\n", "test_checksum_2");
     return 0;
   }
 
   /* InitBasicFS for test_checksum_2: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -5122,7 +6373,6 @@ static int test_checksum_2 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -5137,7 +6387,6 @@ static int test_checksum_2 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -5146,7 +6395,6 @@ static int test_checksum_2 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -5186,6 +6434,9 @@ static int test_checksum_3_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "checksum") == NULL;
   str = getenv ("SKIP_TEST_CHECKSUM_3");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_CHECKSUM");
@@ -5196,14 +6447,13 @@ static int test_checksum_3_skip (void)
 static int test_checksum_3 (void)
 {
   if (test_checksum_3_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_checksum_3");
+    printf ("%s skipped (reason: environment variable set)\n", "test_checksum_3");
     return 0;
   }
 
   /* InitBasicFS for test_checksum_3: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -5226,7 +6476,6 @@ static int test_checksum_3 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -5241,7 +6490,6 @@ static int test_checksum_3 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -5250,7 +6498,6 @@ static int test_checksum_3 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -5290,6 +6537,9 @@ static int test_checksum_4_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "checksum") == NULL;
   str = getenv ("SKIP_TEST_CHECKSUM_4");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_CHECKSUM");
@@ -5300,14 +6550,13 @@ static int test_checksum_4_skip (void)
 static int test_checksum_4 (void)
 {
   if (test_checksum_4_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_checksum_4");
+    printf ("%s skipped (reason: environment variable set)\n", "test_checksum_4");
     return 0;
   }
 
   /* InitBasicFS for test_checksum_4: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -5330,7 +6579,6 @@ static int test_checksum_4 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -5345,7 +6593,6 @@ static int test_checksum_4 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -5354,7 +6601,6 @@ static int test_checksum_4 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -5394,6 +6640,9 @@ static int test_checksum_5_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "checksum") == NULL;
   str = getenv ("SKIP_TEST_CHECKSUM_5");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_CHECKSUM");
@@ -5404,14 +6653,13 @@ static int test_checksum_5_skip (void)
 static int test_checksum_5 (void)
 {
   if (test_checksum_5_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_checksum_5");
+    printf ("%s skipped (reason: environment variable set)\n", "test_checksum_5");
     return 0;
   }
 
   /* InitBasicFS for test_checksum_5: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -5434,7 +6682,6 @@ static int test_checksum_5 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -5449,7 +6696,6 @@ static int test_checksum_5 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -5458,7 +6704,6 @@ static int test_checksum_5 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -5498,6 +6743,9 @@ static int test_checksum_6_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "checksum") == NULL;
   str = getenv ("SKIP_TEST_CHECKSUM_6");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_CHECKSUM");
@@ -5508,14 +6756,13 @@ static int test_checksum_6_skip (void)
 static int test_checksum_6 (void)
 {
   if (test_checksum_6_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_checksum_6");
+    printf ("%s skipped (reason: environment variable set)\n", "test_checksum_6");
     return 0;
   }
 
   /* InitBasicFS for test_checksum_6: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -5538,7 +6785,6 @@ static int test_checksum_6 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -5553,7 +6799,6 @@ static int test_checksum_6 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -5562,7 +6807,6 @@ static int test_checksum_6 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -5590,7 +6834,110 @@ static int test_checksum_6 (void)
     if (r == NULL)
       return -1;
     if (strcmp (r, expected) != 0) {
-      fprintf (stderr, "test_checksum_6: expected \"%s\" but got \"%s\"\n", expected, r);
+      fprintf (stderr, "test_checksum_6: expected \"%s\" but got \"%s\"\n", expected, r);
+      return -1;
+    }
+    free (r);
+  }
+  return 0;
+}
+
+static int test_checksum_7_skip (void)
+{
+  const char *str;
+
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "checksum") == NULL;
+  str = getenv ("SKIP_TEST_CHECKSUM_7");
+  if (str && strcmp (str, "1") == 0) return 1;
+  str = getenv ("SKIP_TEST_CHECKSUM");
+  if (str && strcmp (str, "1") == 0) return 1;
+  return 0;
+}
+
+static int test_checksum_7 (void)
+{
+  if (test_checksum_7_skip ()) {
+    printf ("%s skipped (reason: environment variable set)\n", "test_checksum_7");
+    return 0;
+  }
+
+  /* InitBasicFS for test_checksum_7: create ext2 on /dev/sda1 */
+  {
+    char device[] = "/dev/sda";
+    int r;
+    suppress_error = 0;
+    r = guestfs_blockdev_setrw (g, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_umount_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_lvm_remove_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda";
+    char lines_0[] = ",";
+    char *lines[] = {
+      lines_0,
+      NULL
+    };
+    int r;
+    suppress_error = 0;
+    r = guestfs_sfdisk (g, device, 0, 0, 0, lines);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char fstype[] = "ext2";
+    char device[] = "/dev/sda1";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mkfs (g, fstype, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda1";
+    char mountpoint[] = "/";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mount (g, device, mountpoint);
+    if (r == -1)
+      return -1;
+  }
+  /* TestOutput for checksum (7) */
+  char expected[] = "0e3e75234abc68f4378a86b3f4b32a198ba301845b0cd6e50106e874345700cc6663a86c1ea125dc5e92be17c98f9a0f85ca9d5f595db2012f7cc3571945c123";
+  {
+    char path[] = "/new";
+    char content[] = "test\n";
+    int r;
+    suppress_error = 0;
+    r = guestfs_write_file (g, path, content, 0);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char csumtype[] = "sha512";
+    char path[] = "/new";
+    char *r;
+    suppress_error = 0;
+    r = guestfs_checksum (g, csumtype, path);
+    if (r == NULL)
+      return -1;
+    if (strcmp (r, expected) != 0) {
+      fprintf (stderr, "test_checksum_7: expected \"%s\" but got \"%s\"\n", expected, r);
       return -1;
     }
     free (r);
@@ -5598,28 +6945,30 @@ static int test_checksum_6 (void)
   return 0;
 }
 
-static int test_checksum_7_skip (void)
+static int test_checksum_8_skip (void)
 {
   const char *str;
 
-  str = getenv ("SKIP_TEST_CHECKSUM_7");
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "checksum") == NULL;
+  str = getenv ("SKIP_TEST_CHECKSUM_8");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_CHECKSUM");
   if (str && strcmp (str, "1") == 0) return 1;
   return 0;
 }
 
-static int test_checksum_7 (void)
+static int test_checksum_8 (void)
 {
-  if (test_checksum_7_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_checksum_7");
+  if (test_checksum_8_skip ()) {
+    printf ("%s skipped (reason: environment variable set)\n", "test_checksum_8");
     return 0;
   }
 
-  /* InitBasicFS for test_checksum_7: create ext2 on /dev/sda1 */
+  /* InitBasicFS for test_checksum_8: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -5642,7 +6991,6 @@ static int test_checksum_7 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -5657,7 +7005,6 @@ static int test_checksum_7 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -5666,7 +7013,6 @@ static int test_checksum_7 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -5674,27 +7020,29 @@ static int test_checksum_7 (void)
     if (r == -1)
       return -1;
   }
-  /* TestOutput for checksum (7) */
-  char expected[] = "0e3e75234abc68f4378a86b3f4b32a198ba301845b0cd6e50106e874345700cc6663a86c1ea125dc5e92be17c98f9a0f85ca9d5f595db2012f7cc3571945c123";
+  /* TestOutput for checksum (8) */
+  char expected[] = "46d6ca27ee07cdc6fa99c2e138cc522c";
   {
-    char path[] = "/new";
-    char content[] = "test\n";
+    char options[] = "ro";
+    char vfstype[] = "squashfs";
+    char device[] = "/dev/sdd";
+    char mountpoint[] = "/";
     int r;
     suppress_error = 0;
-    r = guestfs_write_file (g, path, content, 0);
+    r = guestfs_mount_vfs (g, options, vfstype, device, mountpoint);
     if (r == -1)
       return -1;
   }
   {
-    char csumtype[] = "sha512";
-    char path[] = "/new";
+    char csumtype[] = "md5";
+    char path[] = "/known-3";
     char *r;
     suppress_error = 0;
     r = guestfs_checksum (g, csumtype, path);
     if (r == NULL)
       return -1;
     if (strcmp (r, expected) != 0) {
-      fprintf (stderr, "test_checksum_7: expected \"%s\" but got \"%s\"\n", expected, r);
+      fprintf (stderr, "test_checksum_8: expected \"%s\" but got \"%s\"\n", expected, r);
       return -1;
     }
     free (r);
@@ -5706,6 +7054,9 @@ static int test_download_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "download") == NULL;
   str = getenv ("SKIP_TEST_DOWNLOAD_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_DOWNLOAD");
@@ -5716,14 +7067,13 @@ static int test_download_0_skip (void)
 static int test_download_0 (void)
 {
   if (test_download_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_download_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_download_0");
     return 0;
   }
 
   /* InitBasicFS for test_download_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -5746,7 +7096,6 @@ static int test_download_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -5761,7 +7110,6 @@ static int test_download_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -5770,7 +7118,6 @@ static int test_download_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -5784,7 +7131,7 @@ static int test_download_0 (void)
     char remotefilename[] = "/COPYING.LIB";
     int r;
     suppress_error = 0;
-    r = guestfs_upload (g, "COPYING.LIB", remotefilename);
+    r = guestfs_upload (g, "../COPYING.LIB", remotefilename);
     if (r == -1)
       return -1;
   }
@@ -5825,6 +7172,9 @@ static int test_upload_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "upload") == NULL;
   str = getenv ("SKIP_TEST_UPLOAD_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_UPLOAD");
@@ -5835,14 +7185,13 @@ static int test_upload_0_skip (void)
 static int test_upload_0 (void)
 {
   if (test_upload_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_upload_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_upload_0");
     return 0;
   }
 
   /* InitBasicFS for test_upload_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -5865,7 +7214,6 @@ static int test_upload_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -5880,7 +7228,6 @@ static int test_upload_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -5889,7 +7236,6 @@ static int test_upload_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -5903,7 +7249,7 @@ static int test_upload_0 (void)
     char remotefilename[] = "/COPYING.LIB";
     int r;
     suppress_error = 0;
-    r = guestfs_upload (g, "COPYING.LIB", remotefilename);
+    r = guestfs_upload (g, "../COPYING.LIB", remotefilename);
     if (r == -1)
       return -1;
   }
@@ -5928,6 +7274,9 @@ static int test_blockdev_rereadpt_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "blockdev_rereadpt") == NULL;
   str = getenv ("SKIP_TEST_BLOCKDEV_REREADPT_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_BLOCKDEV_REREADPT");
@@ -5938,14 +7287,13 @@ static int test_blockdev_rereadpt_0_skip (void)
 static int test_blockdev_rereadpt_0 (void)
 {
   if (test_blockdev_rereadpt_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_blockdev_rereadpt_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_blockdev_rereadpt_0");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_blockdev_rereadpt_0 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -5969,7 +7317,6 @@ static int test_blockdev_rereadpt_0 (void)
   /* TestRun for blockdev_rereadpt (0) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_rereadpt (g, device);
@@ -5983,6 +7330,9 @@ static int test_blockdev_flushbufs_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "blockdev_flushbufs") == NULL;
   str = getenv ("SKIP_TEST_BLOCKDEV_FLUSHBUFS_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_BLOCKDEV_FLUSHBUFS");
@@ -5993,14 +7343,13 @@ static int test_blockdev_flushbufs_0_skip (void)
 static int test_blockdev_flushbufs_0 (void)
 {
   if (test_blockdev_flushbufs_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_blockdev_flushbufs_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_blockdev_flushbufs_0");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_blockdev_flushbufs_0 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -6024,7 +7373,6 @@ static int test_blockdev_flushbufs_0 (void)
   /* TestRun for blockdev_flushbufs (0) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_flushbufs (g, device);
@@ -6038,6 +7386,9 @@ static int test_blockdev_getsize64_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "blockdev_getsize64") == NULL;
   str = getenv ("SKIP_TEST_BLOCKDEV_GETSIZE64_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_BLOCKDEV_GETSIZE64");
@@ -6048,14 +7399,13 @@ static int test_blockdev_getsize64_0_skip (void)
 static int test_blockdev_getsize64_0 (void)
 {
   if (test_blockdev_getsize64_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_blockdev_getsize64_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_blockdev_getsize64_0");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_blockdev_getsize64_0 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -6079,7 +7429,6 @@ static int test_blockdev_getsize64_0 (void)
   /* TestOutputInt for blockdev_getsize64 (0) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int64_t r;
     suppress_error = 0;
     r = guestfs_blockdev_getsize64 (g, device);
@@ -6097,6 +7446,9 @@ static int test_blockdev_getsz_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "blockdev_getsz") == NULL;
   str = getenv ("SKIP_TEST_BLOCKDEV_GETSZ_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_BLOCKDEV_GETSZ");
@@ -6107,14 +7459,13 @@ static int test_blockdev_getsz_0_skip (void)
 static int test_blockdev_getsz_0 (void)
 {
   if (test_blockdev_getsz_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_blockdev_getsz_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_blockdev_getsz_0");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_blockdev_getsz_0 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -6138,7 +7489,6 @@ static int test_blockdev_getsz_0 (void)
   /* TestOutputInt for blockdev_getsz (0) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int64_t r;
     suppress_error = 0;
     r = guestfs_blockdev_getsz (g, device);
@@ -6156,6 +7506,9 @@ static int test_blockdev_getbsz_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "blockdev_getbsz") == NULL;
   str = getenv ("SKIP_TEST_BLOCKDEV_GETBSZ_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_BLOCKDEV_GETBSZ");
@@ -6166,14 +7519,13 @@ static int test_blockdev_getbsz_0_skip (void)
 static int test_blockdev_getbsz_0 (void)
 {
   if (test_blockdev_getbsz_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_blockdev_getbsz_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_blockdev_getbsz_0");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_blockdev_getbsz_0 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -6197,7 +7549,6 @@ static int test_blockdev_getbsz_0 (void)
   /* TestOutputInt for blockdev_getbsz (0) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_getbsz (g, device);
@@ -6215,6 +7566,9 @@ static int test_blockdev_getss_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "blockdev_getss") == NULL;
   str = getenv ("SKIP_TEST_BLOCKDEV_GETSS_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_BLOCKDEV_GETSS");
@@ -6225,14 +7579,13 @@ static int test_blockdev_getss_0_skip (void)
 static int test_blockdev_getss_0 (void)
 {
   if (test_blockdev_getss_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_blockdev_getss_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_blockdev_getss_0");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_blockdev_getss_0 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -6256,7 +7609,6 @@ static int test_blockdev_getss_0 (void)
   /* TestOutputInt for blockdev_getss (0) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_getss (g, device);
@@ -6274,6 +7626,9 @@ static int test_blockdev_getro_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "blockdev_getro") == NULL;
   str = getenv ("SKIP_TEST_BLOCKDEV_GETRO_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_BLOCKDEV_GETRO");
@@ -6284,14 +7639,13 @@ static int test_blockdev_getro_0_skip (void)
 static int test_blockdev_getro_0 (void)
 {
   if (test_blockdev_getro_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_blockdev_getro_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_blockdev_getro_0");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_blockdev_getro_0 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -6315,7 +7669,6 @@ static int test_blockdev_getro_0 (void)
   /* TestOutputTrue for blockdev_getro (0) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setro (g, device);
@@ -6324,7 +7677,6 @@ static int test_blockdev_getro_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_getro (g, device);
@@ -6342,6 +7694,9 @@ static int test_blockdev_setrw_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "blockdev_setrw") == NULL;
   str = getenv ("SKIP_TEST_BLOCKDEV_SETRW_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_BLOCKDEV_SETRW");
@@ -6352,14 +7707,13 @@ static int test_blockdev_setrw_0_skip (void)
 static int test_blockdev_setrw_0 (void)
 {
   if (test_blockdev_setrw_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_blockdev_setrw_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_blockdev_setrw_0");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_blockdev_setrw_0 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -6383,7 +7737,6 @@ static int test_blockdev_setrw_0 (void)
   /* TestOutputFalse for blockdev_setrw (0) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -6392,7 +7745,6 @@ static int test_blockdev_setrw_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_getro (g, device);
@@ -6410,6 +7762,9 @@ static int test_blockdev_setro_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "blockdev_setro") == NULL;
   str = getenv ("SKIP_TEST_BLOCKDEV_SETRO_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_BLOCKDEV_SETRO");
@@ -6420,14 +7775,13 @@ static int test_blockdev_setro_0_skip (void)
 static int test_blockdev_setro_0 (void)
 {
   if (test_blockdev_setro_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_blockdev_setro_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_blockdev_setro_0");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_blockdev_setro_0 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -6451,7 +7805,6 @@ static int test_blockdev_setro_0 (void)
   /* TestOutputTrue for blockdev_setro (0) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setro (g, device);
@@ -6460,7 +7813,6 @@ static int test_blockdev_setro_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_getro (g, device);
@@ -6478,6 +7830,9 @@ static int test_statvfs_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "statvfs") == NULL;
   str = getenv ("SKIP_TEST_STATVFS_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_STATVFS");
@@ -6488,14 +7843,13 @@ static int test_statvfs_0_skip (void)
 static int test_statvfs_0 (void)
 {
   if (test_statvfs_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_statvfs_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_statvfs_0");
     return 0;
   }
 
   /* InitBasicFS for test_statvfs_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -6518,7 +7872,6 @@ static int test_statvfs_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -6533,7 +7886,6 @@ static int test_statvfs_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -6542,7 +7894,6 @@ static int test_statvfs_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -6582,6 +7933,9 @@ static int test_lstat_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "lstat") == NULL;
   str = getenv ("SKIP_TEST_LSTAT_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_LSTAT");
@@ -6592,14 +7946,13 @@ static int test_lstat_0_skip (void)
 static int test_lstat_0 (void)
 {
   if (test_lstat_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_lstat_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_lstat_0");
     return 0;
   }
 
   /* InitBasicFS for test_lstat_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -6622,7 +7975,6 @@ static int test_lstat_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -6637,7 +7989,6 @@ static int test_lstat_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -6646,7 +7997,6 @@ static int test_lstat_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -6684,6 +8034,9 @@ static int test_stat_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "stat") == NULL;
   str = getenv ("SKIP_TEST_STAT_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_STAT");
@@ -6694,14 +8047,13 @@ static int test_stat_0_skip (void)
 static int test_stat_0 (void)
 {
   if (test_stat_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_stat_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_stat_0");
     return 0;
   }
 
   /* InitBasicFS for test_stat_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -6724,7 +8076,6 @@ static int test_stat_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -6739,7 +8090,6 @@ static int test_stat_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -6748,7 +8098,6 @@ static int test_stat_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -6786,6 +8135,9 @@ static int test_command_lines_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "command_lines") == NULL;
   str = getenv ("SKIP_TEST_COMMAND_LINES_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_COMMAND_LINES");
@@ -6796,14 +8148,13 @@ static int test_command_lines_0_skip (void)
 static int test_command_lines_0 (void)
 {
   if (test_command_lines_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_command_lines_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_command_lines_0");
     return 0;
   }
 
   /* InitBasicFS for test_command_lines_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -6826,7 +8177,6 @@ static int test_command_lines_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -6841,7 +8191,6 @@ static int test_command_lines_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -6850,7 +8199,6 @@ static int test_command_lines_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -6917,6 +8265,9 @@ static int test_command_lines_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "command_lines") == NULL;
   str = getenv ("SKIP_TEST_COMMAND_LINES_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_COMMAND_LINES");
@@ -6927,14 +8278,13 @@ static int test_command_lines_1_skip (void)
 static int test_command_lines_1 (void)
 {
   if (test_command_lines_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_command_lines_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_command_lines_1");
     return 0;
   }
 
   /* InitBasicFS for test_command_lines_1: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -6957,7 +8307,6 @@ static int test_command_lines_1 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -6972,7 +8321,6 @@ static int test_command_lines_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -6981,7 +8329,6 @@ static int test_command_lines_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -7048,6 +8395,9 @@ static int test_command_lines_2_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "command_lines") == NULL;
   str = getenv ("SKIP_TEST_COMMAND_LINES_2");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_COMMAND_LINES");
@@ -7058,14 +8408,13 @@ static int test_command_lines_2_skip (void)
 static int test_command_lines_2 (void)
 {
   if (test_command_lines_2_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_command_lines_2");
+    printf ("%s skipped (reason: environment variable set)\n", "test_command_lines_2");
     return 0;
   }
 
   /* InitBasicFS for test_command_lines_2: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -7088,7 +8437,6 @@ static int test_command_lines_2 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -7103,7 +8451,6 @@ static int test_command_lines_2 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -7112,7 +8459,6 @@ static int test_command_lines_2 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -7191,6 +8537,9 @@ static int test_command_lines_3_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "command_lines") == NULL;
   str = getenv ("SKIP_TEST_COMMAND_LINES_3");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_COMMAND_LINES");
@@ -7201,14 +8550,13 @@ static int test_command_lines_3_skip (void)
 static int test_command_lines_3 (void)
 {
   if (test_command_lines_3_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_command_lines_3");
+    printf ("%s skipped (reason: environment variable set)\n", "test_command_lines_3");
     return 0;
   }
 
   /* InitBasicFS for test_command_lines_3: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -7231,7 +8579,6 @@ static int test_command_lines_3 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -7246,7 +8593,6 @@ static int test_command_lines_3 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -7255,7 +8601,6 @@ static int test_command_lines_3 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -7334,6 +8679,9 @@ static int test_command_lines_4_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "command_lines") == NULL;
   str = getenv ("SKIP_TEST_COMMAND_LINES_4");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_COMMAND_LINES");
@@ -7344,14 +8692,13 @@ static int test_command_lines_4_skip (void)
 static int test_command_lines_4 (void)
 {
   if (test_command_lines_4_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_command_lines_4");
+    printf ("%s skipped (reason: environment variable set)\n", "test_command_lines_4");
     return 0;
   }
 
   /* InitBasicFS for test_command_lines_4: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -7374,7 +8721,6 @@ static int test_command_lines_4 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -7389,7 +8735,6 @@ static int test_command_lines_4 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -7398,7 +8743,6 @@ static int test_command_lines_4 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -7489,6 +8833,9 @@ static int test_command_lines_5_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "command_lines") == NULL;
   str = getenv ("SKIP_TEST_COMMAND_LINES_5");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_COMMAND_LINES");
@@ -7499,14 +8846,13 @@ static int test_command_lines_5_skip (void)
 static int test_command_lines_5 (void)
 {
   if (test_command_lines_5_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_command_lines_5");
+    printf ("%s skipped (reason: environment variable set)\n", "test_command_lines_5");
     return 0;
   }
 
   /* InitBasicFS for test_command_lines_5: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -7529,7 +8875,6 @@ static int test_command_lines_5 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -7544,7 +8889,6 @@ static int test_command_lines_5 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -7553,7 +8897,6 @@ static int test_command_lines_5 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -7656,6 +8999,9 @@ static int test_command_lines_6_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "command_lines") == NULL;
   str = getenv ("SKIP_TEST_COMMAND_LINES_6");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_COMMAND_LINES");
@@ -7666,14 +9012,13 @@ static int test_command_lines_6_skip (void)
 static int test_command_lines_6 (void)
 {
   if (test_command_lines_6_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_command_lines_6");
+    printf ("%s skipped (reason: environment variable set)\n", "test_command_lines_6");
     return 0;
   }
 
   /* InitBasicFS for test_command_lines_6: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -7696,7 +9041,6 @@ static int test_command_lines_6 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -7711,7 +9055,6 @@ static int test_command_lines_6 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -7720,7 +9063,6 @@ static int test_command_lines_6 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -7775,6 +9117,9 @@ static int test_command_lines_7_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "command_lines") == NULL;
   str = getenv ("SKIP_TEST_COMMAND_LINES_7");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_COMMAND_LINES");
@@ -7785,14 +9130,13 @@ static int test_command_lines_7_skip (void)
 static int test_command_lines_7 (void)
 {
   if (test_command_lines_7_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_command_lines_7");
+    printf ("%s skipped (reason: environment variable set)\n", "test_command_lines_7");
     return 0;
   }
 
   /* InitBasicFS for test_command_lines_7: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -7815,7 +9159,6 @@ static int test_command_lines_7 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -7830,7 +9173,6 @@ static int test_command_lines_7 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -7839,7 +9181,6 @@ static int test_command_lines_7 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -7906,6 +9247,9 @@ static int test_command_lines_8_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "command_lines") == NULL;
   str = getenv ("SKIP_TEST_COMMAND_LINES_8");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_COMMAND_LINES");
@@ -7916,14 +9260,13 @@ static int test_command_lines_8_skip (void)
 static int test_command_lines_8 (void)
 {
   if (test_command_lines_8_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_command_lines_8");
+    printf ("%s skipped (reason: environment variable set)\n", "test_command_lines_8");
     return 0;
   }
 
   /* InitBasicFS for test_command_lines_8: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -7946,7 +9289,6 @@ static int test_command_lines_8 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -7961,7 +9303,6 @@ static int test_command_lines_8 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -7970,7 +9311,6 @@ static int test_command_lines_8 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -8049,6 +9389,9 @@ static int test_command_lines_9_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "command_lines") == NULL;
   str = getenv ("SKIP_TEST_COMMAND_LINES_9");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_COMMAND_LINES");
@@ -8059,14 +9402,13 @@ static int test_command_lines_9_skip (void)
 static int test_command_lines_9 (void)
 {
   if (test_command_lines_9_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_command_lines_9");
+    printf ("%s skipped (reason: environment variable set)\n", "test_command_lines_9");
     return 0;
   }
 
   /* InitBasicFS for test_command_lines_9: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -8089,7 +9431,6 @@ static int test_command_lines_9 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -8104,7 +9445,6 @@ static int test_command_lines_9 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -8113,7 +9453,6 @@ static int test_command_lines_9 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -8192,6 +9531,9 @@ static int test_command_lines_10_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "command_lines") == NULL;
   str = getenv ("SKIP_TEST_COMMAND_LINES_10");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_COMMAND_LINES");
@@ -8202,14 +9544,13 @@ static int test_command_lines_10_skip (void)
 static int test_command_lines_10 (void)
 {
   if (test_command_lines_10_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_command_lines_10");
+    printf ("%s skipped (reason: environment variable set)\n", "test_command_lines_10");
     return 0;
   }
 
   /* InitBasicFS for test_command_lines_10: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -8232,7 +9573,6 @@ static int test_command_lines_10 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -8247,7 +9587,6 @@ static int test_command_lines_10 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -8256,7 +9595,6 @@ static int test_command_lines_10 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -8335,6 +9673,9 @@ static int test_command_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "command") == NULL;
   str = getenv ("SKIP_TEST_COMMAND_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_COMMAND");
@@ -8345,14 +9686,13 @@ static int test_command_0_skip (void)
 static int test_command_0 (void)
 {
   if (test_command_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_command_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_command_0");
     return 0;
   }
 
   /* InitBasicFS for test_command_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -8375,7 +9715,6 @@ static int test_command_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -8390,7 +9729,6 @@ static int test_command_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -8399,7 +9737,6 @@ static int test_command_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -8451,6 +9788,9 @@ static int test_command_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "command") == NULL;
   str = getenv ("SKIP_TEST_COMMAND_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_COMMAND");
@@ -8461,14 +9801,13 @@ static int test_command_1_skip (void)
 static int test_command_1 (void)
 {
   if (test_command_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_command_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_command_1");
     return 0;
   }
 
   /* InitBasicFS for test_command_1: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -8491,7 +9830,6 @@ static int test_command_1 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -8506,7 +9844,6 @@ static int test_command_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -8515,7 +9852,6 @@ static int test_command_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -8567,6 +9903,9 @@ static int test_command_2_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "command") == NULL;
   str = getenv ("SKIP_TEST_COMMAND_2");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_COMMAND");
@@ -8577,14 +9916,13 @@ static int test_command_2_skip (void)
 static int test_command_2 (void)
 {
   if (test_command_2_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_command_2");
+    printf ("%s skipped (reason: environment variable set)\n", "test_command_2");
     return 0;
   }
 
   /* InitBasicFS for test_command_2: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -8607,7 +9945,6 @@ static int test_command_2 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -8622,7 +9959,6 @@ static int test_command_2 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -8631,7 +9967,6 @@ static int test_command_2 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -8683,6 +10018,9 @@ static int test_command_3_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "command") == NULL;
   str = getenv ("SKIP_TEST_COMMAND_3");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_COMMAND");
@@ -8693,14 +10031,13 @@ static int test_command_3_skip (void)
 static int test_command_3 (void)
 {
   if (test_command_3_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_command_3");
+    printf ("%s skipped (reason: environment variable set)\n", "test_command_3");
     return 0;
   }
 
   /* InitBasicFS for test_command_3: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -8723,7 +10060,6 @@ static int test_command_3 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -8738,7 +10074,6 @@ static int test_command_3 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -8747,7 +10082,6 @@ static int test_command_3 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -8799,6 +10133,9 @@ static int test_command_4_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "command") == NULL;
   str = getenv ("SKIP_TEST_COMMAND_4");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_COMMAND");
@@ -8809,14 +10146,13 @@ static int test_command_4_skip (void)
 static int test_command_4 (void)
 {
   if (test_command_4_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_command_4");
+    printf ("%s skipped (reason: environment variable set)\n", "test_command_4");
     return 0;
   }
 
   /* InitBasicFS for test_command_4: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -8839,7 +10175,6 @@ static int test_command_4 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -8854,7 +10189,6 @@ static int test_command_4 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -8863,7 +10197,6 @@ static int test_command_4 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -8915,6 +10248,9 @@ static int test_command_5_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "command") == NULL;
   str = getenv ("SKIP_TEST_COMMAND_5");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_COMMAND");
@@ -8925,14 +10261,13 @@ static int test_command_5_skip (void)
 static int test_command_5 (void)
 {
   if (test_command_5_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_command_5");
+    printf ("%s skipped (reason: environment variable set)\n", "test_command_5");
     return 0;
   }
 
   /* InitBasicFS for test_command_5: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -8955,7 +10290,6 @@ static int test_command_5 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -8970,7 +10304,6 @@ static int test_command_5 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -8979,7 +10312,6 @@ static int test_command_5 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -9031,6 +10363,9 @@ static int test_command_6_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "command") == NULL;
   str = getenv ("SKIP_TEST_COMMAND_6");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_COMMAND");
@@ -9041,14 +10376,13 @@ static int test_command_6_skip (void)
 static int test_command_6 (void)
 {
   if (test_command_6_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_command_6");
+    printf ("%s skipped (reason: environment variable set)\n", "test_command_6");
     return 0;
   }
 
   /* InitBasicFS for test_command_6: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -9071,7 +10405,6 @@ static int test_command_6 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -9086,7 +10419,6 @@ static int test_command_6 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -9095,7 +10427,6 @@ static int test_command_6 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -9147,6 +10478,9 @@ static int test_command_7_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "command") == NULL;
   str = getenv ("SKIP_TEST_COMMAND_7");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_COMMAND");
@@ -9157,14 +10491,13 @@ static int test_command_7_skip (void)
 static int test_command_7 (void)
 {
   if (test_command_7_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_command_7");
+    printf ("%s skipped (reason: environment variable set)\n", "test_command_7");
     return 0;
   }
 
   /* InitBasicFS for test_command_7: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -9187,7 +10520,6 @@ static int test_command_7 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -9202,7 +10534,6 @@ static int test_command_7 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -9211,7 +10542,6 @@ static int test_command_7 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -9263,6 +10593,9 @@ static int test_command_8_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "command") == NULL;
   str = getenv ("SKIP_TEST_COMMAND_8");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_COMMAND");
@@ -9273,14 +10606,13 @@ static int test_command_8_skip (void)
 static int test_command_8 (void)
 {
   if (test_command_8_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_command_8");
+    printf ("%s skipped (reason: environment variable set)\n", "test_command_8");
     return 0;
   }
 
   /* InitBasicFS for test_command_8: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -9303,7 +10635,6 @@ static int test_command_8 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -9318,7 +10649,6 @@ static int test_command_8 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -9327,7 +10657,6 @@ static int test_command_8 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -9379,6 +10708,9 @@ static int test_command_9_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "command") == NULL;
   str = getenv ("SKIP_TEST_COMMAND_9");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_COMMAND");
@@ -9389,14 +10721,13 @@ static int test_command_9_skip (void)
 static int test_command_9 (void)
 {
   if (test_command_9_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_command_9");
+    printf ("%s skipped (reason: environment variable set)\n", "test_command_9");
     return 0;
   }
 
   /* InitBasicFS for test_command_9: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -9419,7 +10750,6 @@ static int test_command_9 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -9434,7 +10764,6 @@ static int test_command_9 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -9443,7 +10772,6 @@ static int test_command_9 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -9495,6 +10823,9 @@ static int test_command_10_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "command") == NULL;
   str = getenv ("SKIP_TEST_COMMAND_10");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_COMMAND");
@@ -9505,14 +10836,13 @@ static int test_command_10_skip (void)
 static int test_command_10 (void)
 {
   if (test_command_10_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_command_10");
+    printf ("%s skipped (reason: environment variable set)\n", "test_command_10");
     return 0;
   }
 
   /* InitBasicFS for test_command_10: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -9535,7 +10865,6 @@ static int test_command_10 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -9550,7 +10879,6 @@ static int test_command_10 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -9559,7 +10887,6 @@ static int test_command_10 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -9611,6 +10938,9 @@ static int test_command_11_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "command") == NULL;
   str = getenv ("SKIP_TEST_COMMAND_11");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_COMMAND");
@@ -9621,14 +10951,13 @@ static int test_command_11_skip (void)
 static int test_command_11 (void)
 {
   if (test_command_11_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_command_11");
+    printf ("%s skipped (reason: environment variable set)\n", "test_command_11");
     return 0;
   }
 
   /* InitBasicFS for test_command_11: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -9651,7 +10980,6 @@ static int test_command_11 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -9666,7 +10994,6 @@ static int test_command_11 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -9675,7 +11002,6 @@ static int test_command_11 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -9720,6 +11046,9 @@ static int test_file_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "file") == NULL;
   str = getenv ("SKIP_TEST_FILE_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_FILE");
@@ -9730,14 +11059,13 @@ static int test_file_0_skip (void)
 static int test_file_0 (void)
 {
   if (test_file_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_file_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_file_0");
     return 0;
   }
 
   /* InitBasicFS for test_file_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -9760,7 +11088,6 @@ static int test_file_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -9775,7 +11102,6 @@ static int test_file_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -9784,7 +11110,6 @@ static int test_file_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -9822,6 +11147,9 @@ static int test_file_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "file") == NULL;
   str = getenv ("SKIP_TEST_FILE_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_FILE");
@@ -9832,14 +11160,13 @@ static int test_file_1_skip (void)
 static int test_file_1 (void)
 {
   if (test_file_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_file_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_file_1");
     return 0;
   }
 
   /* InitBasicFS for test_file_1: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -9862,7 +11189,6 @@ static int test_file_1 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -9877,7 +11203,6 @@ static int test_file_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -9886,7 +11211,6 @@ static int test_file_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -9925,6 +11249,9 @@ static int test_file_2_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "file") == NULL;
   str = getenv ("SKIP_TEST_FILE_2");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_FILE");
@@ -9935,14 +11262,13 @@ static int test_file_2_skip (void)
 static int test_file_2 (void)
 {
   if (test_file_2_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_file_2");
+    printf ("%s skipped (reason: environment variable set)\n", "test_file_2");
     return 0;
   }
 
   /* InitBasicFS for test_file_2: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -9965,7 +11291,6 @@ static int test_file_2 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -9980,7 +11305,6 @@ static int test_file_2 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -9989,7 +11313,6 @@ static int test_file_2 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -10014,6 +11337,9 @@ static int test_umount_all_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "umount_all") == NULL;
   str = getenv ("SKIP_TEST_UMOUNT_ALL_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_UMOUNT_ALL");
@@ -10024,14 +11350,13 @@ static int test_umount_all_0_skip (void)
 static int test_umount_all_0 (void)
 {
   if (test_umount_all_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_umount_all_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_umount_all_0");
     return 0;
   }
 
   /* InitBasicFS for test_umount_all_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -10054,7 +11379,6 @@ static int test_umount_all_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -10069,7 +11393,6 @@ static int test_umount_all_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -10078,7 +11401,6 @@ static int test_umount_all_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -10117,6 +11439,9 @@ static int test_umount_all_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "umount_all") == NULL;
   str = getenv ("SKIP_TEST_UMOUNT_ALL_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_UMOUNT_ALL");
@@ -10127,14 +11452,13 @@ static int test_umount_all_1_skip (void)
 static int test_umount_all_1 (void)
 {
   if (test_umount_all_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_umount_all_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_umount_all_1");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_umount_all_1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -10158,7 +11482,6 @@ static int test_umount_all_1 (void)
   /* TestOutputList for umount_all (1) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",10";
     char lines_1[] = ",20";
     char lines_2[] = ",";
@@ -10177,7 +11500,6 @@ static int test_umount_all_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -10187,7 +11509,6 @@ static int test_umount_all_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda2";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -10197,7 +11518,6 @@ static int test_umount_all_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda3";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -10206,7 +11526,6 @@ static int test_umount_all_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -10224,7 +11543,6 @@ static int test_umount_all_1 (void)
   }
   {
     char device[] = "/dev/sda2";
-    device[5] = devchar;
     char mountpoint[] = "/mp1";
     int r;
     suppress_error = 0;
@@ -10242,7 +11560,6 @@ static int test_umount_all_1 (void)
   }
   {
     char device[] = "/dev/sda3";
-    device[5] = devchar;
     char mountpoint[] = "/mp1/mp2";
     int r;
     suppress_error = 0;
@@ -10288,6 +11605,9 @@ static int test_mounts_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "mounts") == NULL;
   str = getenv ("SKIP_TEST_MOUNTS_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_MOUNTS");
@@ -10298,14 +11618,13 @@ static int test_mounts_0_skip (void)
 static int test_mounts_0 (void)
 {
   if (test_mounts_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_mounts_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_mounts_0");
     return 0;
   }
 
   /* InitBasicFS for test_mounts_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -10328,7 +11647,6 @@ static int test_mounts_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -10343,7 +11661,6 @@ static int test_mounts_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -10352,7 +11669,6 @@ static int test_mounts_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -10360,7 +11676,7 @@ static int test_mounts_0 (void)
     if (r == -1)
       return -1;
   }
-  /* TestOutputList for mounts (0) */
+  /* TestOutputListOfDevices for mounts (0) */
   {
     char **r;
     int i;
@@ -10375,7 +11691,7 @@ static int test_mounts_0 (void)
     }
     {
       char expected[] = "/dev/sda1";
-      expected[5] = devchar;
+      r[0][5] = 's';
       if (strcmp (r[0], expected) != 0) {
         fprintf (stderr, "test_mounts_0: expected \"%s\" but got \"%s\"\n", expected, r[0]);
         return -1;
@@ -10397,6 +11713,9 @@ static int test_umount_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "umount") == NULL;
   str = getenv ("SKIP_TEST_UMOUNT_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_UMOUNT");
@@ -10407,14 +11726,13 @@ static int test_umount_0_skip (void)
 static int test_umount_0 (void)
 {
   if (test_umount_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_umount_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_umount_0");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_umount_0 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -10435,10 +11753,9 @@ static int test_umount_0 (void)
     if (r == -1)
       return -1;
   }
-  /* TestOutputList for umount (0) */
+  /* TestOutputListOfDevices for umount (0) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -10453,7 +11770,6 @@ static int test_umount_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -10462,7 +11778,6 @@ static int test_umount_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -10484,7 +11799,7 @@ static int test_umount_0 (void)
     }
     {
       char expected[] = "/dev/sda1";
-      expected[5] = devchar;
+      r[0][5] = 's';
       if (strcmp (r[0], expected) != 0) {
         fprintf (stderr, "test_umount_0: expected \"%s\" but got \"%s\"\n", expected, r[0]);
         return -1;
@@ -10506,6 +11821,9 @@ static int test_umount_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "umount") == NULL;
   str = getenv ("SKIP_TEST_UMOUNT_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_UMOUNT");
@@ -10516,14 +11834,13 @@ static int test_umount_1_skip (void)
 static int test_umount_1 (void)
 {
   if (test_umount_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_umount_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_umount_1");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_umount_1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -10547,7 +11864,6 @@ static int test_umount_1 (void)
   /* TestOutputList for umount (1) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -10562,7 +11878,6 @@ static int test_umount_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -10571,7 +11886,6 @@ static int test_umount_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -10610,6 +11924,9 @@ static int test_write_file_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "write_file") == NULL;
   str = getenv ("SKIP_TEST_WRITE_FILE_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_WRITE_FILE");
@@ -10620,14 +11937,13 @@ static int test_write_file_0_skip (void)
 static int test_write_file_0 (void)
 {
   if (test_write_file_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_write_file_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_write_file_0");
     return 0;
   }
 
   /* InitBasicFS for test_write_file_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -10650,7 +11966,6 @@ static int test_write_file_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -10665,7 +11980,6 @@ static int test_write_file_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -10674,7 +11988,6 @@ static int test_write_file_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -10713,6 +12026,9 @@ static int test_write_file_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "write_file") == NULL;
   str = getenv ("SKIP_TEST_WRITE_FILE_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_WRITE_FILE");
@@ -10723,14 +12039,13 @@ static int test_write_file_1_skip (void)
 static int test_write_file_1 (void)
 {
   if (test_write_file_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_write_file_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_write_file_1");
     return 0;
   }
 
   /* InitBasicFS for test_write_file_1: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -10753,7 +12068,6 @@ static int test_write_file_1 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -10768,7 +12082,6 @@ static int test_write_file_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -10777,7 +12090,6 @@ static int test_write_file_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -10816,6 +12128,9 @@ static int test_write_file_2_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "write_file") == NULL;
   str = getenv ("SKIP_TEST_WRITE_FILE_2");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_WRITE_FILE");
@@ -10826,14 +12141,13 @@ static int test_write_file_2_skip (void)
 static int test_write_file_2 (void)
 {
   if (test_write_file_2_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_write_file_2");
+    printf ("%s skipped (reason: environment variable set)\n", "test_write_file_2");
     return 0;
   }
 
   /* InitBasicFS for test_write_file_2: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -10856,7 +12170,6 @@ static int test_write_file_2 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -10871,7 +12184,6 @@ static int test_write_file_2 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -10880,7 +12192,6 @@ static int test_write_file_2 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -10919,6 +12230,9 @@ static int test_write_file_3_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "write_file") == NULL;
   str = getenv ("SKIP_TEST_WRITE_FILE_3");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_WRITE_FILE");
@@ -10929,14 +12243,13 @@ static int test_write_file_3_skip (void)
 static int test_write_file_3 (void)
 {
   if (test_write_file_3_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_write_file_3");
+    printf ("%s skipped (reason: environment variable set)\n", "test_write_file_3");
     return 0;
   }
 
   /* InitBasicFS for test_write_file_3: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -10959,7 +12272,6 @@ static int test_write_file_3 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -10974,7 +12286,6 @@ static int test_write_file_3 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -10983,7 +12294,6 @@ static int test_write_file_3 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -11022,6 +12332,9 @@ static int test_write_file_4_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "write_file") == NULL;
   str = getenv ("SKIP_TEST_WRITE_FILE_4");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_WRITE_FILE");
@@ -11032,14 +12345,13 @@ static int test_write_file_4_skip (void)
 static int test_write_file_4 (void)
 {
   if (test_write_file_4_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_write_file_4");
+    printf ("%s skipped (reason: environment variable set)\n", "test_write_file_4");
     return 0;
   }
 
   /* InitBasicFS for test_write_file_4: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -11062,7 +12374,6 @@ static int test_write_file_4 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -11077,7 +12388,6 @@ static int test_write_file_4 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -11086,7 +12396,6 @@ static int test_write_file_4 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -11125,6 +12434,9 @@ static int test_write_file_5_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "write_file") == NULL;
   str = getenv ("SKIP_TEST_WRITE_FILE_5");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_WRITE_FILE");
@@ -11135,14 +12447,13 @@ static int test_write_file_5_skip (void)
 static int test_write_file_5 (void)
 {
   if (test_write_file_5_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_write_file_5");
+    printf ("%s skipped (reason: environment variable set)\n", "test_write_file_5");
     return 0;
   }
 
   /* InitBasicFS for test_write_file_5: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -11165,7 +12476,6 @@ static int test_write_file_5 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -11180,7 +12490,6 @@ static int test_write_file_5 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -11189,7 +12498,6 @@ static int test_write_file_5 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -11228,6 +12536,9 @@ static int test_mkfs_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "mkfs") == NULL;
   str = getenv ("SKIP_TEST_MKFS_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_MKFS");
@@ -11238,14 +12549,13 @@ static int test_mkfs_0_skip (void)
 static int test_mkfs_0 (void)
 {
   if (test_mkfs_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_mkfs_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_mkfs_0");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_mkfs_0 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -11270,7 +12580,6 @@ static int test_mkfs_0 (void)
   char expected[] = "new file contents";
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -11285,7 +12594,6 @@ static int test_mkfs_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -11294,7 +12602,6 @@ static int test_mkfs_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -11331,6 +12638,9 @@ static int test_lvcreate_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "lvcreate") == NULL;
   str = getenv ("SKIP_TEST_LVCREATE_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_LVCREATE");
@@ -11341,14 +12651,13 @@ static int test_lvcreate_0_skip (void)
 static int test_lvcreate_0 (void)
 {
   if (test_lvcreate_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_lvcreate_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_lvcreate_0");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_lvcreate_0 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -11372,7 +12681,6 @@ static int test_lvcreate_0 (void)
   /* TestOutputList for lvcreate (0) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",10";
     char lines_1[] = ",20";
     char lines_2[] = ",";
@@ -11390,7 +12698,6 @@ static int test_lvcreate_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -11399,7 +12706,6 @@ static int test_lvcreate_0 (void)
   }
   {
     char device[] = "/dev/sda2";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -11408,7 +12714,6 @@ static int test_lvcreate_0 (void)
   }
   {
     char device[] = "/dev/sda3";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -11418,9 +12723,7 @@ static int test_lvcreate_0 (void)
   {
     char volgroup[] = "VG1";
     char physvols_0[] = "/dev/sda1";
-    physvols_0[5] = devchar;
     char physvols_1[] = "/dev/sda2";
-    physvols_1[5] = devchar;
     char *physvols[] = {
       physvols_0,
       physvols_1,
@@ -11435,7 +12738,6 @@ static int test_lvcreate_0 (void)
   {
     char volgroup[] = "VG2";
     char physvols_0[] = "/dev/sda3";
-    physvols_0[5] = devchar;
     char *physvols[] = {
       physvols_0,
       NULL
@@ -11574,6 +12876,9 @@ static int test_vgcreate_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "vgcreate") == NULL;
   str = getenv ("SKIP_TEST_VGCREATE_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_VGCREATE");
@@ -11584,14 +12889,13 @@ static int test_vgcreate_0_skip (void)
 static int test_vgcreate_0 (void)
 {
   if (test_vgcreate_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_vgcreate_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_vgcreate_0");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_vgcreate_0 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -11615,7 +12919,6 @@ static int test_vgcreate_0 (void)
   /* TestOutputList for vgcreate (0) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",10";
     char lines_1[] = ",20";
     char lines_2[] = ",";
@@ -11633,7 +12936,6 @@ static int test_vgcreate_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -11642,7 +12944,6 @@ static int test_vgcreate_0 (void)
   }
   {
     char device[] = "/dev/sda2";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -11651,7 +12952,6 @@ static int test_vgcreate_0 (void)
   }
   {
     char device[] = "/dev/sda3";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -11661,9 +12961,7 @@ static int test_vgcreate_0 (void)
   {
     char volgroup[] = "VG1";
     char physvols_0[] = "/dev/sda1";
-    physvols_0[5] = devchar;
     char physvols_1[] = "/dev/sda2";
-    physvols_1[5] = devchar;
     char *physvols[] = {
       physvols_0,
       physvols_1,
@@ -11678,7 +12976,6 @@ static int test_vgcreate_0 (void)
   {
     char volgroup[] = "VG2";
     char physvols_0[] = "/dev/sda3";
-    physvols_0[5] = devchar;
     char *physvols[] = {
       physvols_0,
       NULL
@@ -11736,6 +13033,9 @@ static int test_pvcreate_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "pvcreate") == NULL;
   str = getenv ("SKIP_TEST_PVCREATE_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_PVCREATE");
@@ -11746,14 +13046,13 @@ static int test_pvcreate_0_skip (void)
 static int test_pvcreate_0 (void)
 {
   if (test_pvcreate_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_pvcreate_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_pvcreate_0");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_pvcreate_0 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -11774,10 +13073,9 @@ static int test_pvcreate_0 (void)
     if (r == -1)
       return -1;
   }
-  /* TestOutputList for pvcreate (0) */
+  /* TestOutputListOfDevices for pvcreate (0) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",10";
     char lines_1[] = ",20";
     char lines_2[] = ",";
@@ -11795,7 +13093,6 @@ static int test_pvcreate_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -11804,7 +13101,6 @@ static int test_pvcreate_0 (void)
   }
   {
     char device[] = "/dev/sda2";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -11813,7 +13109,6 @@ static int test_pvcreate_0 (void)
   }
   {
     char device[] = "/dev/sda3";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -11834,7 +13129,7 @@ static int test_pvcreate_0 (void)
     }
     {
       char expected[] = "/dev/sda1";
-      expected[5] = devchar;
+      r[0][5] = 's';
       if (strcmp (r[0], expected) != 0) {
         fprintf (stderr, "test_pvcreate_0: expected \"%s\" but got \"%s\"\n", expected, r[0]);
         return -1;
@@ -11847,7 +13142,7 @@ static int test_pvcreate_0 (void)
     }
     {
       char expected[] = "/dev/sda2";
-      expected[5] = devchar;
+      r[1][5] = 's';
       if (strcmp (r[1], expected) != 0) {
         fprintf (stderr, "test_pvcreate_0: expected \"%s\" but got \"%s\"\n", expected, r[1]);
         return -1;
@@ -11860,7 +13155,7 @@ static int test_pvcreate_0 (void)
     }
     {
       char expected[] = "/dev/sda3";
-      expected[5] = devchar;
+      r[2][5] = 's';
       if (strcmp (r[2], expected) != 0) {
         fprintf (stderr, "test_pvcreate_0: expected \"%s\" but got \"%s\"\n", expected, r[2]);
         return -1;
@@ -11882,6 +13177,9 @@ static int test_is_dir_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "is_dir") == NULL;
   str = getenv ("SKIP_TEST_IS_DIR_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_IS_DIR");
@@ -11892,14 +13190,13 @@ static int test_is_dir_0_skip (void)
 static int test_is_dir_0 (void)
 {
   if (test_is_dir_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_is_dir_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_is_dir_0");
     return 0;
   }
 
   /* InitBasicFS for test_is_dir_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -11922,7 +13219,6 @@ static int test_is_dir_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -11937,7 +13233,6 @@ static int test_is_dir_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -11946,7 +13241,6 @@ static int test_is_dir_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -11982,6 +13276,9 @@ static int test_is_dir_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "is_dir") == NULL;
   str = getenv ("SKIP_TEST_IS_DIR_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_IS_DIR");
@@ -11992,14 +13289,13 @@ static int test_is_dir_1_skip (void)
 static int test_is_dir_1 (void)
 {
   if (test_is_dir_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_is_dir_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_is_dir_1");
     return 0;
   }
 
   /* InitBasicFS for test_is_dir_1: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -12022,7 +13318,6 @@ static int test_is_dir_1 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -12037,7 +13332,6 @@ static int test_is_dir_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -12046,7 +13340,6 @@ static int test_is_dir_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -12082,6 +13375,9 @@ static int test_is_file_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "is_file") == NULL;
   str = getenv ("SKIP_TEST_IS_FILE_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_IS_FILE");
@@ -12092,14 +13388,13 @@ static int test_is_file_0_skip (void)
 static int test_is_file_0 (void)
 {
   if (test_is_file_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_is_file_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_is_file_0");
     return 0;
   }
 
   /* InitBasicFS for test_is_file_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -12122,7 +13417,6 @@ static int test_is_file_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -12137,7 +13431,6 @@ static int test_is_file_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -12146,7 +13439,6 @@ static int test_is_file_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -12182,6 +13474,9 @@ static int test_is_file_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "is_file") == NULL;
   str = getenv ("SKIP_TEST_IS_FILE_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_IS_FILE");
@@ -12192,14 +13487,13 @@ static int test_is_file_1_skip (void)
 static int test_is_file_1 (void)
 {
   if (test_is_file_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_is_file_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_is_file_1");
     return 0;
   }
 
   /* InitBasicFS for test_is_file_1: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -12222,7 +13516,6 @@ static int test_is_file_1 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -12237,7 +13530,6 @@ static int test_is_file_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -12246,7 +13538,6 @@ static int test_is_file_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -12282,6 +13573,9 @@ static int test_exists_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "exists") == NULL;
   str = getenv ("SKIP_TEST_EXISTS_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_EXISTS");
@@ -12292,14 +13586,13 @@ static int test_exists_0_skip (void)
 static int test_exists_0 (void)
 {
   if (test_exists_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_exists_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_exists_0");
     return 0;
   }
 
   /* InitBasicFS for test_exists_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -12322,7 +13615,6 @@ static int test_exists_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -12337,7 +13629,6 @@ static int test_exists_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -12346,7 +13637,6 @@ static int test_exists_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -12382,6 +13672,9 @@ static int test_exists_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "exists") == NULL;
   str = getenv ("SKIP_TEST_EXISTS_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_EXISTS");
@@ -12392,14 +13685,13 @@ static int test_exists_1_skip (void)
 static int test_exists_1 (void)
 {
   if (test_exists_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_exists_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_exists_1");
     return 0;
   }
 
   /* InitBasicFS for test_exists_1: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -12422,7 +13714,6 @@ static int test_exists_1 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -12437,7 +13728,6 @@ static int test_exists_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -12446,7 +13736,6 @@ static int test_exists_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -12482,6 +13771,9 @@ static int test_mkdir_p_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "mkdir_p") == NULL;
   str = getenv ("SKIP_TEST_MKDIR_P_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_MKDIR_P");
@@ -12492,14 +13784,13 @@ static int test_mkdir_p_0_skip (void)
 static int test_mkdir_p_0 (void)
 {
   if (test_mkdir_p_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_mkdir_p_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_mkdir_p_0");
     return 0;
   }
 
   /* InitBasicFS for test_mkdir_p_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -12522,7 +13813,6 @@ static int test_mkdir_p_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -12537,7 +13827,6 @@ static int test_mkdir_p_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -12546,7 +13835,6 @@ static int test_mkdir_p_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -12582,6 +13870,9 @@ static int test_mkdir_p_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "mkdir_p") == NULL;
   str = getenv ("SKIP_TEST_MKDIR_P_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_MKDIR_P");
@@ -12592,14 +13883,13 @@ static int test_mkdir_p_1_skip (void)
 static int test_mkdir_p_1 (void)
 {
   if (test_mkdir_p_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_mkdir_p_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_mkdir_p_1");
     return 0;
   }
 
   /* InitBasicFS for test_mkdir_p_1: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -12622,7 +13912,6 @@ static int test_mkdir_p_1 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -12637,7 +13926,6 @@ static int test_mkdir_p_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -12646,7 +13934,6 @@ static int test_mkdir_p_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -12682,6 +13969,9 @@ static int test_mkdir_p_2_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "mkdir_p") == NULL;
   str = getenv ("SKIP_TEST_MKDIR_P_2");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_MKDIR_P");
@@ -12692,14 +13982,13 @@ static int test_mkdir_p_2_skip (void)
 static int test_mkdir_p_2 (void)
 {
   if (test_mkdir_p_2_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_mkdir_p_2");
+    printf ("%s skipped (reason: environment variable set)\n", "test_mkdir_p_2");
     return 0;
   }
 
   /* InitBasicFS for test_mkdir_p_2: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -12722,7 +14011,6 @@ static int test_mkdir_p_2 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -12737,7 +14025,6 @@ static int test_mkdir_p_2 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -12746,7 +14033,6 @@ static int test_mkdir_p_2 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -12778,10 +14064,203 @@ static int test_mkdir_p_2 (void)
   return 0;
 }
 
+static int test_mkdir_p_3_skip (void)
+{
+  const char *str;
+
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "mkdir_p") == NULL;
+  str = getenv ("SKIP_TEST_MKDIR_P_3");
+  if (str && strcmp (str, "1") == 0) return 1;
+  str = getenv ("SKIP_TEST_MKDIR_P");
+  if (str && strcmp (str, "1") == 0) return 1;
+  return 0;
+}
+
+static int test_mkdir_p_3 (void)
+{
+  if (test_mkdir_p_3_skip ()) {
+    printf ("%s skipped (reason: environment variable set)\n", "test_mkdir_p_3");
+    return 0;
+  }
+
+  /* InitBasicFS for test_mkdir_p_3: create ext2 on /dev/sda1 */
+  {
+    char device[] = "/dev/sda";
+    int r;
+    suppress_error = 0;
+    r = guestfs_blockdev_setrw (g, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_umount_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_lvm_remove_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda";
+    char lines_0[] = ",";
+    char *lines[] = {
+      lines_0,
+      NULL
+    };
+    int r;
+    suppress_error = 0;
+    r = guestfs_sfdisk (g, device, 0, 0, 0, lines);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char fstype[] = "ext2";
+    char device[] = "/dev/sda1";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mkfs (g, fstype, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda1";
+    char mountpoint[] = "/";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mount (g, device, mountpoint);
+    if (r == -1)
+      return -1;
+  }
+  /* TestRun for mkdir_p (3) */
+  {
+    char path[] = "/new";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mkdir (g, path);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char path[] = "/new";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mkdir_p (g, path);
+    if (r == -1)
+      return -1;
+  }
+  return 0;
+}
+
+static int test_mkdir_p_4_skip (void)
+{
+  const char *str;
+
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "mkdir_p") == NULL;
+  str = getenv ("SKIP_TEST_MKDIR_P_4");
+  if (str && strcmp (str, "1") == 0) return 1;
+  str = getenv ("SKIP_TEST_MKDIR_P");
+  if (str && strcmp (str, "1") == 0) return 1;
+  return 0;
+}
+
+static int test_mkdir_p_4 (void)
+{
+  if (test_mkdir_p_4_skip ()) {
+    printf ("%s skipped (reason: environment variable set)\n", "test_mkdir_p_4");
+    return 0;
+  }
+
+  /* InitBasicFS for test_mkdir_p_4: create ext2 on /dev/sda1 */
+  {
+    char device[] = "/dev/sda";
+    int r;
+    suppress_error = 0;
+    r = guestfs_blockdev_setrw (g, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_umount_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    int r;
+    suppress_error = 0;
+    r = guestfs_lvm_remove_all (g);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda";
+    char lines_0[] = ",";
+    char *lines[] = {
+      lines_0,
+      NULL
+    };
+    int r;
+    suppress_error = 0;
+    r = guestfs_sfdisk (g, device, 0, 0, 0, lines);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char fstype[] = "ext2";
+    char device[] = "/dev/sda1";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mkfs (g, fstype, device);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char device[] = "/dev/sda1";
+    char mountpoint[] = "/";
+    int r;
+    suppress_error = 0;
+    r = guestfs_mount (g, device, mountpoint);
+    if (r == -1)
+      return -1;
+  }
+  /* TestLastFail for mkdir_p (4) */
+  {
+    char path[] = "/new";
+    int r;
+    suppress_error = 0;
+    r = guestfs_touch (g, path);
+    if (r == -1)
+      return -1;
+  }
+  {
+    char path[] = "/new";
+    int r;
+    suppress_error = 1;
+    r = guestfs_mkdir_p (g, path);
+    if (r != -1)
+      return -1;
+  }
+  return 0;
+}
+
 static int test_mkdir_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "mkdir") == NULL;
   str = getenv ("SKIP_TEST_MKDIR_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_MKDIR");
@@ -12792,14 +14271,13 @@ static int test_mkdir_0_skip (void)
 static int test_mkdir_0 (void)
 {
   if (test_mkdir_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_mkdir_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_mkdir_0");
     return 0;
   }
 
   /* InitBasicFS for test_mkdir_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -12822,7 +14300,6 @@ static int test_mkdir_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -12837,7 +14314,6 @@ static int test_mkdir_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -12846,7 +14322,6 @@ static int test_mkdir_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -12882,6 +14357,9 @@ static int test_mkdir_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "mkdir") == NULL;
   str = getenv ("SKIP_TEST_MKDIR_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_MKDIR");
@@ -12892,14 +14370,13 @@ static int test_mkdir_1_skip (void)
 static int test_mkdir_1 (void)
 {
   if (test_mkdir_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_mkdir_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_mkdir_1");
     return 0;
   }
 
   /* InitBasicFS for test_mkdir_1: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -12922,7 +14399,6 @@ static int test_mkdir_1 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -12937,7 +14413,6 @@ static int test_mkdir_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -12946,7 +14421,6 @@ static int test_mkdir_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -12970,6 +14444,9 @@ static int test_rm_rf_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "rm_rf") == NULL;
   str = getenv ("SKIP_TEST_RM_RF_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_RM_RF");
@@ -12980,14 +14457,13 @@ static int test_rm_rf_0_skip (void)
 static int test_rm_rf_0 (void)
 {
   if (test_rm_rf_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_rm_rf_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_rm_rf_0");
     return 0;
   }
 
   /* InitBasicFS for test_rm_rf_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -13010,7 +14486,6 @@ static int test_rm_rf_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -13025,7 +14500,6 @@ static int test_rm_rf_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -13034,7 +14508,6 @@ static int test_rm_rf_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -13094,6 +14567,9 @@ static int test_rmdir_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "rmdir") == NULL;
   str = getenv ("SKIP_TEST_RMDIR_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_RMDIR");
@@ -13104,14 +14580,13 @@ static int test_rmdir_0_skip (void)
 static int test_rmdir_0 (void)
 {
   if (test_rmdir_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_rmdir_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_rmdir_0");
     return 0;
   }
 
   /* InitBasicFS for test_rmdir_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -13134,7 +14609,6 @@ static int test_rmdir_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -13149,7 +14623,6 @@ static int test_rmdir_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -13158,7 +14631,6 @@ static int test_rmdir_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -13190,6 +14662,9 @@ static int test_rmdir_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "rmdir") == NULL;
   str = getenv ("SKIP_TEST_RMDIR_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_RMDIR");
@@ -13200,14 +14675,13 @@ static int test_rmdir_1_skip (void)
 static int test_rmdir_1 (void)
 {
   if (test_rmdir_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_rmdir_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_rmdir_1");
     return 0;
   }
 
   /* InitBasicFS for test_rmdir_1: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -13230,7 +14704,6 @@ static int test_rmdir_1 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -13245,7 +14718,6 @@ static int test_rmdir_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -13254,7 +14726,6 @@ static int test_rmdir_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -13278,6 +14749,9 @@ static int test_rmdir_2_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "rmdir") == NULL;
   str = getenv ("SKIP_TEST_RMDIR_2");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_RMDIR");
@@ -13288,14 +14762,13 @@ static int test_rmdir_2_skip (void)
 static int test_rmdir_2 (void)
 {
   if (test_rmdir_2_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_rmdir_2");
+    printf ("%s skipped (reason: environment variable set)\n", "test_rmdir_2");
     return 0;
   }
 
   /* InitBasicFS for test_rmdir_2: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -13318,7 +14791,6 @@ static int test_rmdir_2 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -13333,7 +14805,6 @@ static int test_rmdir_2 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -13342,7 +14813,6 @@ static int test_rmdir_2 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -13374,6 +14844,9 @@ static int test_rm_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "rm") == NULL;
   str = getenv ("SKIP_TEST_RM_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_RM");
@@ -13384,14 +14857,13 @@ static int test_rm_0_skip (void)
 static int test_rm_0 (void)
 {
   if (test_rm_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_rm_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_rm_0");
     return 0;
   }
 
   /* InitBasicFS for test_rm_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -13414,7 +14886,6 @@ static int test_rm_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -13429,7 +14900,6 @@ static int test_rm_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -13438,7 +14908,6 @@ static int test_rm_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -13470,6 +14939,9 @@ static int test_rm_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "rm") == NULL;
   str = getenv ("SKIP_TEST_RM_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_RM");
@@ -13480,14 +14952,13 @@ static int test_rm_1_skip (void)
 static int test_rm_1 (void)
 {
   if (test_rm_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_rm_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_rm_1");
     return 0;
   }
 
   /* InitBasicFS for test_rm_1: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -13510,7 +14981,6 @@ static int test_rm_1 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -13525,7 +14995,6 @@ static int test_rm_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -13534,7 +15003,6 @@ static int test_rm_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -13558,6 +15026,9 @@ static int test_rm_2_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "rm") == NULL;
   str = getenv ("SKIP_TEST_RM_2");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_RM");
@@ -13568,14 +15039,13 @@ static int test_rm_2_skip (void)
 static int test_rm_2 (void)
 {
   if (test_rm_2_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_rm_2");
+    printf ("%s skipped (reason: environment variable set)\n", "test_rm_2");
     return 0;
   }
 
   /* InitBasicFS for test_rm_2: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -13598,7 +15068,6 @@ static int test_rm_2 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -13613,7 +15082,6 @@ static int test_rm_2 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -13622,7 +15090,6 @@ static int test_rm_2 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -13654,6 +15121,9 @@ static int test_read_lines_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "read_lines") == NULL;
   str = getenv ("SKIP_TEST_READ_LINES_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_READ_LINES");
@@ -13664,14 +15134,13 @@ static int test_read_lines_0_skip (void)
 static int test_read_lines_0 (void)
 {
   if (test_read_lines_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_read_lines_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_read_lines_0");
     return 0;
   }
 
   /* InitBasicFS for test_read_lines_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -13694,7 +15163,6 @@ static int test_read_lines_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -13709,7 +15177,6 @@ static int test_read_lines_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -13718,7 +15185,6 @@ static int test_read_lines_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -13796,6 +15262,9 @@ static int test_read_lines_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "read_lines") == NULL;
   str = getenv ("SKIP_TEST_READ_LINES_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_READ_LINES");
@@ -13806,14 +15275,13 @@ static int test_read_lines_1_skip (void)
 static int test_read_lines_1 (void)
 {
   if (test_read_lines_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_read_lines_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_read_lines_1");
     return 0;
   }
 
   /* InitBasicFS for test_read_lines_1: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -13836,7 +15304,6 @@ static int test_read_lines_1 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -13851,7 +15318,6 @@ static int test_read_lines_1 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -13860,7 +15326,6 @@ static int test_read_lines_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -13902,6 +15367,9 @@ static int test_lvs_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "lvs") == NULL;
   str = getenv ("SKIP_TEST_LVS_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_LVS");
@@ -13912,14 +15380,13 @@ static int test_lvs_0_skip (void)
 static int test_lvs_0 (void)
 {
   if (test_lvs_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_lvs_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_lvs_0");
     return 0;
   }
 
   /* InitBasicFSonLVM for test_lvs_0: create ext2 on /dev/VG/LV */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -13942,7 +15409,6 @@ static int test_lvs_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -13956,7 +15422,6 @@ static int test_lvs_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -13966,7 +15431,6 @@ static int test_lvs_0 (void)
   {
     char volgroup[] = "VG";
     char physvols_0[] = "/dev/sda1";
-    physvols_0[5] = devchar;
     char *physvols[] = {
       physvols_0,
       NULL
@@ -14040,6 +15504,9 @@ static int test_lvs_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "lvs") == NULL;
   str = getenv ("SKIP_TEST_LVS_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_LVS");
@@ -14050,14 +15517,13 @@ static int test_lvs_1_skip (void)
 static int test_lvs_1 (void)
 {
   if (test_lvs_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_lvs_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_lvs_1");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_lvs_1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -14081,7 +15547,6 @@ static int test_lvs_1 (void)
   /* TestOutputList for lvs (1) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",10";
     char lines_1[] = ",20";
     char lines_2[] = ",";
@@ -14099,7 +15564,6 @@ static int test_lvs_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -14108,7 +15572,6 @@ static int test_lvs_1 (void)
   }
   {
     char device[] = "/dev/sda2";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -14117,7 +15580,6 @@ static int test_lvs_1 (void)
   }
   {
     char device[] = "/dev/sda3";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -14127,9 +15589,7 @@ static int test_lvs_1 (void)
   {
     char volgroup[] = "VG1";
     char physvols_0[] = "/dev/sda1";
-    physvols_0[5] = devchar;
     char physvols_1[] = "/dev/sda2";
-    physvols_1[5] = devchar;
     char *physvols[] = {
       physvols_0,
       physvols_1,
@@ -14144,7 +15604,6 @@ static int test_lvs_1 (void)
   {
     char volgroup[] = "VG2";
     char physvols_0[] = "/dev/sda3";
-    physvols_0[5] = devchar;
     char *physvols[] = {
       physvols_0,
       NULL
@@ -14241,6 +15700,9 @@ static int test_vgs_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "vgs") == NULL;
   str = getenv ("SKIP_TEST_VGS_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_VGS");
@@ -14251,14 +15713,13 @@ static int test_vgs_0_skip (void)
 static int test_vgs_0 (void)
 {
   if (test_vgs_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_vgs_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_vgs_0");
     return 0;
   }
 
   /* InitBasicFSonLVM for test_vgs_0: create ext2 on /dev/VG/LV */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -14281,7 +15742,6 @@ static int test_vgs_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -14295,7 +15755,6 @@ static int test_vgs_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -14305,7 +15764,6 @@ static int test_vgs_0 (void)
   {
     char volgroup[] = "VG";
     char physvols_0[] = "/dev/sda1";
-    physvols_0[5] = devchar;
     char *physvols[] = {
       physvols_0,
       NULL
@@ -14379,6 +15837,9 @@ static int test_vgs_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "vgs") == NULL;
   str = getenv ("SKIP_TEST_VGS_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_VGS");
@@ -14389,14 +15850,13 @@ static int test_vgs_1_skip (void)
 static int test_vgs_1 (void)
 {
   if (test_vgs_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_vgs_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_vgs_1");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_vgs_1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -14420,7 +15880,6 @@ static int test_vgs_1 (void)
   /* TestOutputList for vgs (1) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",10";
     char lines_1[] = ",20";
     char lines_2[] = ",";
@@ -14438,7 +15897,6 @@ static int test_vgs_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -14447,7 +15905,6 @@ static int test_vgs_1 (void)
   }
   {
     char device[] = "/dev/sda2";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -14456,7 +15913,6 @@ static int test_vgs_1 (void)
   }
   {
     char device[] = "/dev/sda3";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -14466,9 +15922,7 @@ static int test_vgs_1 (void)
   {
     char volgroup[] = "VG1";
     char physvols_0[] = "/dev/sda1";
-    physvols_0[5] = devchar;
     char physvols_1[] = "/dev/sda2";
-    physvols_1[5] = devchar;
     char *physvols[] = {
       physvols_0,
       physvols_1,
@@ -14483,7 +15937,6 @@ static int test_vgs_1 (void)
   {
     char volgroup[] = "VG2";
     char physvols_0[] = "/dev/sda3";
-    physvols_0[5] = devchar;
     char *physvols[] = {
       physvols_0,
       NULL
@@ -14541,6 +15994,9 @@ static int test_pvs_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "pvs") == NULL;
   str = getenv ("SKIP_TEST_PVS_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_PVS");
@@ -14551,14 +16007,13 @@ static int test_pvs_0_skip (void)
 static int test_pvs_0 (void)
 {
   if (test_pvs_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_pvs_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_pvs_0");
     return 0;
   }
 
   /* InitBasicFSonLVM for test_pvs_0: create ext2 on /dev/VG/LV */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -14581,7 +16036,6 @@ static int test_pvs_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -14595,7 +16049,6 @@ static int test_pvs_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -14605,7 +16058,6 @@ static int test_pvs_0 (void)
   {
     char volgroup[] = "VG";
     char physvols_0[] = "/dev/sda1";
-    physvols_0[5] = devchar;
     char *physvols[] = {
       physvols_0,
       NULL
@@ -14643,7 +16095,7 @@ static int test_pvs_0 (void)
     if (r == -1)
       return -1;
   }
-  /* TestOutputList for pvs (0) */
+  /* TestOutputListOfDevices for pvs (0) */
   {
     char **r;
     int i;
@@ -14658,7 +16110,7 @@ static int test_pvs_0 (void)
     }
     {
       char expected[] = "/dev/sda1";
-      expected[5] = devchar;
+      r[0][5] = 's';
       if (strcmp (r[0], expected) != 0) {
         fprintf (stderr, "test_pvs_0: expected \"%s\" but got \"%s\"\n", expected, r[0]);
         return -1;
@@ -14680,6 +16132,9 @@ static int test_pvs_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "pvs") == NULL;
   str = getenv ("SKIP_TEST_PVS_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_PVS");
@@ -14690,14 +16145,13 @@ static int test_pvs_1_skip (void)
 static int test_pvs_1 (void)
 {
   if (test_pvs_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_pvs_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_pvs_1");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_pvs_1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -14718,10 +16172,9 @@ static int test_pvs_1 (void)
     if (r == -1)
       return -1;
   }
-  /* TestOutputList for pvs (1) */
+  /* TestOutputListOfDevices for pvs (1) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",10";
     char lines_1[] = ",20";
     char lines_2[] = ",";
@@ -14739,7 +16192,6 @@ static int test_pvs_1 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -14748,7 +16200,6 @@ static int test_pvs_1 (void)
   }
   {
     char device[] = "/dev/sda2";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -14757,7 +16208,6 @@ static int test_pvs_1 (void)
   }
   {
     char device[] = "/dev/sda3";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_pvcreate (g, device);
@@ -14778,7 +16228,7 @@ static int test_pvs_1 (void)
     }
     {
       char expected[] = "/dev/sda1";
-      expected[5] = devchar;
+      r[0][5] = 's';
       if (strcmp (r[0], expected) != 0) {
         fprintf (stderr, "test_pvs_1: expected \"%s\" but got \"%s\"\n", expected, r[0]);
         return -1;
@@ -14791,7 +16241,7 @@ static int test_pvs_1 (void)
     }
     {
       char expected[] = "/dev/sda2";
-      expected[5] = devchar;
+      r[1][5] = 's';
       if (strcmp (r[1], expected) != 0) {
         fprintf (stderr, "test_pvs_1: expected \"%s\" but got \"%s\"\n", expected, r[1]);
         return -1;
@@ -14804,7 +16254,7 @@ static int test_pvs_1 (void)
     }
     {
       char expected[] = "/dev/sda3";
-      expected[5] = devchar;
+      r[2][5] = 's';
       if (strcmp (r[2], expected) != 0) {
         fprintf (stderr, "test_pvs_1: expected \"%s\" but got \"%s\"\n", expected, r[2]);
         return -1;
@@ -14826,6 +16276,9 @@ static int test_list_partitions_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "list_partitions") == NULL;
   str = getenv ("SKIP_TEST_LIST_PARTITIONS_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_LIST_PARTITIONS");
@@ -14836,14 +16289,13 @@ static int test_list_partitions_0_skip (void)
 static int test_list_partitions_0 (void)
 {
   if (test_list_partitions_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_list_partitions_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_list_partitions_0");
     return 0;
   }
 
   /* InitBasicFS for test_list_partitions_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -14866,7 +16318,6 @@ static int test_list_partitions_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -14881,7 +16332,6 @@ static int test_list_partitions_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -14890,7 +16340,6 @@ static int test_list_partitions_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -14898,7 +16347,7 @@ static int test_list_partitions_0 (void)
     if (r == -1)
       return -1;
   }
-  /* TestOutputList for list_partitions (0) */
+  /* TestOutputListOfDevices for list_partitions (0) */
   {
     char **r;
     int i;
@@ -14913,7 +16362,7 @@ static int test_list_partitions_0 (void)
     }
     {
       char expected[] = "/dev/sda1";
-      expected[5] = devchar;
+      r[0][5] = 's';
       if (strcmp (r[0], expected) != 0) {
         fprintf (stderr, "test_list_partitions_0: expected \"%s\" but got \"%s\"\n", expected, r[0]);
         return -1;
@@ -14935,6 +16384,9 @@ static int test_list_partitions_1_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "list_partitions") == NULL;
   str = getenv ("SKIP_TEST_LIST_PARTITIONS_1");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_LIST_PARTITIONS");
@@ -14945,14 +16397,13 @@ static int test_list_partitions_1_skip (void)
 static int test_list_partitions_1 (void)
 {
   if (test_list_partitions_1_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_list_partitions_1");
+    printf ("%s skipped (reason: environment variable set)\n", "test_list_partitions_1");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_list_partitions_1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -14973,10 +16424,9 @@ static int test_list_partitions_1 (void)
     if (r == -1)
       return -1;
   }
-  /* TestOutputList for list_partitions (1) */
+  /* TestOutputListOfDevices for list_partitions (1) */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",10";
     char lines_1[] = ",20";
     char lines_2[] = ",";
@@ -15006,7 +16456,7 @@ static int test_list_partitions_1 (void)
     }
     {
       char expected[] = "/dev/sda1";
-      expected[5] = devchar;
+      r[0][5] = 's';
       if (strcmp (r[0], expected) != 0) {
         fprintf (stderr, "test_list_partitions_1: expected \"%s\" but got \"%s\"\n", expected, r[0]);
         return -1;
@@ -15019,7 +16469,7 @@ static int test_list_partitions_1 (void)
     }
     {
       char expected[] = "/dev/sda2";
-      expected[5] = devchar;
+      r[1][5] = 's';
       if (strcmp (r[1], expected) != 0) {
         fprintf (stderr, "test_list_partitions_1: expected \"%s\" but got \"%s\"\n", expected, r[1]);
         return -1;
@@ -15032,7 +16482,7 @@ static int test_list_partitions_1 (void)
     }
     {
       char expected[] = "/dev/sda3";
-      expected[5] = devchar;
+      r[2][5] = 's';
       if (strcmp (r[2], expected) != 0) {
         fprintf (stderr, "test_list_partitions_1: expected \"%s\" but got \"%s\"\n", expected, r[2]);
         return -1;
@@ -15054,6 +16504,9 @@ static int test_list_devices_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "list_devices") == NULL;
   str = getenv ("SKIP_TEST_LIST_DEVICES_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_LIST_DEVICES");
@@ -15064,14 +16517,13 @@ static int test_list_devices_0_skip (void)
 static int test_list_devices_0 (void)
 {
   if (test_list_devices_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_list_devices_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_list_devices_0");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_list_devices_0 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -15092,7 +16544,7 @@ static int test_list_devices_0 (void)
     if (r == -1)
       return -1;
   }
-  /* TestOutputList for list_devices (0) */
+  /* TestOutputListOfDevices for list_devices (0) */
   {
     char **r;
     int i;
@@ -15107,7 +16559,7 @@ static int test_list_devices_0 (void)
     }
     {
       char expected[] = "/dev/sda";
-      expected[5] = devchar;
+      r[0][5] = 's';
       if (strcmp (r[0], expected) != 0) {
         fprintf (stderr, "test_list_devices_0: expected \"%s\" but got \"%s\"\n", expected, r[0]);
         return -1;
@@ -15120,7 +16572,7 @@ static int test_list_devices_0 (void)
     }
     {
       char expected[] = "/dev/sdb";
-      expected[5] = devchar;
+      r[1][5] = 's';
       if (strcmp (r[1], expected) != 0) {
         fprintf (stderr, "test_list_devices_0: expected \"%s\" but got \"%s\"\n", expected, r[1]);
         return -1;
@@ -15133,13 +16585,26 @@ static int test_list_devices_0 (void)
     }
     {
       char expected[] = "/dev/sdc";
-      expected[5] = devchar;
+      r[2][5] = 's';
       if (strcmp (r[2], expected) != 0) {
         fprintf (stderr, "test_list_devices_0: expected \"%s\" but got \"%s\"\n", expected, r[2]);
         return -1;
       }
     }
-    if (r[3] != NULL) {
+    if (!r[3]) {
+      fprintf (stderr, "test_list_devices_0: short list returned from command\n");
+      print_strings (r);
+      return -1;
+    }
+    {
+      char expected[] = "/dev/sdd";
+      r[3][5] = 's';
+      if (strcmp (r[3], expected) != 0) {
+        fprintf (stderr, "test_list_devices_0: expected \"%s\" but got \"%s\"\n", expected, r[3]);
+        return -1;
+      }
+    }
+    if (r[4] != NULL) {
       fprintf (stderr, "test_list_devices_0: extra elements returned from command\n");
       print_strings (r);
       return -1;
@@ -15155,6 +16620,9 @@ static int test_ls_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "ls") == NULL;
   str = getenv ("SKIP_TEST_LS_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_LS");
@@ -15165,14 +16633,13 @@ static int test_ls_0_skip (void)
 static int test_ls_0 (void)
 {
   if (test_ls_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_ls_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_ls_0");
     return 0;
   }
 
   /* InitBasicFS for test_ls_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -15195,7 +16662,6 @@ static int test_ls_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -15210,7 +16676,6 @@ static int test_ls_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -15219,7 +16684,6 @@ static int test_ls_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -15324,6 +16788,9 @@ static int test_cat_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "cat") == NULL;
   str = getenv ("SKIP_TEST_CAT_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_CAT");
@@ -15334,14 +16801,13 @@ static int test_cat_0_skip (void)
 static int test_cat_0 (void)
 {
   if (test_cat_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_cat_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_cat_0");
     return 0;
   }
 
   /* InitBasicFS for test_cat_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -15364,7 +16830,6 @@ static int test_cat_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -15379,7 +16844,6 @@ static int test_cat_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -15388,7 +16852,6 @@ static int test_cat_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -15427,6 +16890,9 @@ static int test_touch_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "touch") == NULL;
   str = getenv ("SKIP_TEST_TOUCH_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_TOUCH");
@@ -15437,14 +16903,13 @@ static int test_touch_0_skip (void)
 static int test_touch_0 (void)
 {
   if (test_touch_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_touch_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_touch_0");
     return 0;
   }
 
   /* InitBasicFS for test_touch_0: create ext2 on /dev/sda1 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -15467,7 +16932,6 @@ static int test_touch_0 (void)
   }
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -15482,7 +16946,6 @@ static int test_touch_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -15491,7 +16954,6 @@ static int test_touch_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -15527,6 +16989,9 @@ static int test_sync_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "sync") == NULL;
   str = getenv ("SKIP_TEST_SYNC_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_SYNC");
@@ -15537,14 +17002,13 @@ static int test_sync_0_skip (void)
 static int test_sync_0 (void)
 {
   if (test_sync_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_sync_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_sync_0");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_sync_0 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -15580,6 +17044,9 @@ static int test_mount_0_skip (void)
 {
   const char *str;
 
+  str = getenv ("TEST_ONLY");
+  if (str)
+    return strstr (str, "mount") == NULL;
   str = getenv ("SKIP_TEST_MOUNT_0");
   if (str && strcmp (str, "1") == 0) return 1;
   str = getenv ("SKIP_TEST_MOUNT");
@@ -15590,14 +17057,13 @@ static int test_mount_0_skip (void)
 static int test_mount_0 (void)
 {
   if (test_mount_0_skip ()) {
-    printf ("%s skipped (reason: SKIP_TEST_* variable set)\n", "test_mount_0");
+    printf ("%s skipped (reason: environment variable set)\n", "test_mount_0");
     return 0;
   }
 
   /* InitNone|InitEmpty for test_mount_0 */
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_blockdev_setrw (g, device);
@@ -15622,7 +17088,6 @@ static int test_mount_0 (void)
   char expected[] = "new file contents";
   {
     char device[] = "/dev/sda";
-    device[5] = devchar;
     char lines_0[] = ",";
     char *lines[] = {
       lines_0,
@@ -15637,7 +17102,6 @@ static int test_mount_0 (void)
   {
     char fstype[] = "ext2";
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     int r;
     suppress_error = 0;
     r = guestfs_mkfs (g, fstype, device);
@@ -15646,7 +17110,6 @@ static int test_mount_0 (void)
   }
   {
     char device[] = "/dev/sda1";
-    device[5] = devchar;
     char mountpoint[] = "/";
     int r;
     suppress_error = 0;
@@ -15683,11 +17146,9 @@ int main (int argc, char *argv[])
 {
   char c = 0;
   int failed = 0;
-  const char *srcdir;
   const char *filename;
-  int fd, i;
+  int fd;
   int nr_tests, test_num = 0;
-  char **devs;
 
   no_test_warnings ();
 
@@ -15785,40 +17246,102 @@ int main (int argc, char *argv[])
     exit (1);
   }
 
+  if (guestfs_add_drive_ro (g, "../images/test.sqsh") == -1) {
+    printf ("guestfs_add_drive_ro ../images/test.sqsh FAILED\n");
+    exit (1);
+  }
+
   if (guestfs_launch (g) == -1) {
     printf ("guestfs_launch FAILED\n");
     exit (1);
   }
+
+  /* Set a timeout in case qemu hangs during launch (RHBZ#505329). */
+  alarm (600);
+
   if (guestfs_wait_ready (g) == -1) {
     printf ("guestfs_wait_ready FAILED\n");
     exit (1);
   }
 
-  /* Detect if the appliance uses /dev/sd* or /dev/hd* in device
-   * names.  This changed between RHEL 5 and RHEL 6 so we have to
-   * support both.
-   */
-  devs = guestfs_list_devices (g);
-  if (devs == NULL || devs[0] == NULL) {
-    printf ("guestfs_list_devices FAILED\n");
-    exit (1);
-  }
-  if (strncmp (devs[0], "/dev/sd", 7) == 0)
-    devchar = 's';
-  else if (strncmp (devs[0], "/dev/hd", 7) == 0)
-    devchar = 'h';
-  else {
-    printf ("guestfs_list_devices returned unexpected string '%s'\n",
-            devs[0]);
-    exit (1);
-  }
-  for (i = 0; devs[i] != NULL; ++i)
-    free (devs[i]);
-  free (devs);
+  /* Cancel previous alarm. */
+  alarm (0);
 
-  nr_tests = 140;
+  nr_tests = 156;
 
   test_num++;
+  printf ("%3d/%3d test_wc_c_0\n", test_num, nr_tests);
+  if (test_wc_c_0 () == -1) {
+    printf ("test_wc_c_0 FAILED\n");
+    failed++;
+  }
+  test_num++;
+  printf ("%3d/%3d test_wc_w_0\n", test_num, nr_tests);
+  if (test_wc_w_0 () == -1) {
+    printf ("test_wc_w_0 FAILED\n");
+    failed++;
+  }
+  test_num++;
+  printf ("%3d/%3d test_wc_l_0\n", test_num, nr_tests);
+  if (test_wc_l_0 () == -1) {
+    printf ("test_wc_l_0 FAILED\n");
+    failed++;
+  }
+  test_num++;
+  printf ("%3d/%3d test_mkdtemp_0\n", test_num, nr_tests);
+  if (test_mkdtemp_0 () == -1) {
+    printf ("test_mkdtemp_0 FAILED\n");
+    failed++;
+  }
+  test_num++;
+  printf ("%3d/%3d test_scrub_file_0\n", test_num, nr_tests);
+  if (test_scrub_file_0 () == -1) {
+    printf ("test_scrub_file_0 FAILED\n");
+    failed++;
+  }
+  test_num++;
+  printf ("%3d/%3d test_scrub_device_0\n", test_num, nr_tests);
+  if (test_scrub_device_0 () == -1) {
+    printf ("test_scrub_device_0 FAILED\n");
+    failed++;
+  }
+  test_num++;
+  printf ("%3d/%3d test_glob_expand_0\n", test_num, nr_tests);
+  if (test_glob_expand_0 () == -1) {
+    printf ("test_glob_expand_0 FAILED\n");
+    failed++;
+  }
+  test_num++;
+  printf ("%3d/%3d test_glob_expand_1\n", test_num, nr_tests);
+  if (test_glob_expand_1 () == -1) {
+    printf ("test_glob_expand_1 FAILED\n");
+    failed++;
+  }
+  test_num++;
+  printf ("%3d/%3d test_glob_expand_2\n", test_num, nr_tests);
+  if (test_glob_expand_2 () == -1) {
+    printf ("test_glob_expand_2 FAILED\n");
+    failed++;
+  }
+  test_num++;
+  printf ("%3d/%3d test_ntfs_3g_probe_0\n", test_num, nr_tests);
+  if (test_ntfs_3g_probe_0 () == -1) {
+    printf ("test_ntfs_3g_probe_0 FAILED\n");
+    failed++;
+  }
+  test_num++;
+  printf ("%3d/%3d test_ntfs_3g_probe_1\n", test_num, nr_tests);
+  if (test_ntfs_3g_probe_1 () == -1) {
+    printf ("test_ntfs_3g_probe_1 FAILED\n");
+    failed++;
+  }
+  test_num++;
+  printf ("%3d/%3d test_sleep_0\n", test_num, nr_tests);
+  if (test_sleep_0 () == -1) {
+    printf ("test_sleep_0 FAILED\n");
+    failed++;
+  }
+  test_num++;
   printf ("%3d/%3d test_find_0\n", test_num, nr_tests);
   if (test_find_0 () == -1) {
     printf ("test_find_0 FAILED\n");
@@ -15855,6 +17378,12 @@ int main (int argc, char *argv[])
     failed++;
   }
   test_num++;
+  printf ("%3d/%3d test_hexdump_1\n", test_num, nr_tests);
+  if (test_hexdump_1 () == -1) {
+    printf ("test_hexdump_1 FAILED\n");
+    failed++;
+  }
+  test_num++;
   printf ("%3d/%3d test_strings_e_0\n", test_num, nr_tests);
   if (test_strings_e_0 () == -1) {
     printf ("test_strings_e_0 FAILED\n");
@@ -16125,6 +17654,12 @@ int main (int argc, char *argv[])
     failed++;
   }
   test_num++;
+  printf ("%3d/%3d test_checksum_8\n", test_num, nr_tests);
+  if (test_checksum_8 () == -1) {
+    printf ("test_checksum_8 FAILED\n");
+    failed++;
+  }
+  test_num++;
   printf ("%3d/%3d test_download_0\n", test_num, nr_tests);
   if (test_download_0 () == -1) {
     printf ("test_download_0 FAILED\n");
@@ -16509,6 +18044,18 @@ int main (int argc, char *argv[])
     failed++;
   }
   test_num++;
+  printf ("%3d/%3d test_mkdir_p_3\n", test_num, nr_tests);
+  if (test_mkdir_p_3 () == -1) {
+    printf ("test_mkdir_p_3 FAILED\n");
+    failed++;
+  }
+  test_num++;
+  printf ("%3d/%3d test_mkdir_p_4\n", test_num, nr_tests);
+  if (test_mkdir_p_4 () == -1) {
+    printf ("test_mkdir_p_4 FAILED\n");
+    failed++;
+  }
+  test_num++;
   printf ("%3d/%3d test_mkdir_0\n", test_num, nr_tests);
   if (test_mkdir_0 () == -1) {
     printf ("test_mkdir_0 FAILED\n");