X-Git-Url: http://git.annexia.org/?p=libguestfs.git;a=blobdiff_plain;f=src%2Finspect.c;h=b06c8f68228da789fb2cd68d5bbbd0cd06ca6943;hp=3421baafc6c9a16686ed89c211bbd51fc50108dd;hb=4e656a61d40ff51e63aa06d857c40c14ff31ddb9;hpb=12cf22ade46ba07aa162a311d3369096292d6d02

diff --git a/src/inspect.c b/src/inspect.c
index 3421baa..b06c8f6 100644
--- a/src/inspect.c
+++ b/src/inspect.c
@@ -52,7 +52,7 @@ static pcre *re_fedora;
 static pcre *re_rhel_old;
 static pcre *re_rhel;
 static pcre *re_rhel_no_minor;
-static pcre *re_debian;
+static pcre *re_major_minor;
 static pcre *re_aug_seq;
 static pcre *re_xdev;
 static pcre *re_windows_version;
@@ -85,7 +85,7 @@ compile_regexps (void)
            "(?:Red Hat Enterprise Linux|CentOS|Scientific Linux).*release (\\d+)\\.(\\d+)", 0);
   COMPILE (re_rhel_no_minor,
            "(?:Red Hat Enterprise Linux|CentOS|Scientific Linux).*release (\\d+)", 0);
-  COMPILE (re_debian, "(\\d+)\\.(\\d+)", 0);
+  COMPILE (re_major_minor, "(\\d+)\\.(\\d+)", 0);
   COMPILE (re_aug_seq, "/\\d+$", 0);
   COMPILE (re_xdev, "^/dev/(?:h|s|v|xv)d([a-z]\\d*)$", 0);
   COMPILE (re_windows_version, "^(\\d+)\\.(\\d+)", 0);
@@ -101,7 +101,7 @@ free_regexps (void)
   pcre_free (re_rhel_old);
   pcre_free (re_rhel);
   pcre_free (re_rhel_no_minor);
-  pcre_free (re_debian);
+  pcre_free (re_major_minor);
   pcre_free (re_aug_seq);
   pcre_free (re_xdev);
   pcre_free (re_windows_version);
@@ -423,28 +423,11 @@ guestfs__inspect_os (guestfs_h *g)
   /* At this point we have, in the handle, a list of all filesystems
    * found and data about each one.  Now we assemble the list of
    * filesystems which are root devices and return that to the user.
+   * Fall through to guestfs__inspect_get_roots to do that.
    */
-  size_t count = 0;
-  for (i = 0; i < g->nr_fses; ++i)
-    if (g->fses[i].is_root)
-      count++;
-
-  char **ret = calloc (count+1, sizeof (char *));
-  if (ret == NULL) {
-    perrorf (g, "calloc");
+  char **ret = guestfs__inspect_get_roots (g);
+  if (ret == NULL)
     guestfs___free_inspect_info (g);
-    return NULL;
-  }
-
-  count = 0;
-  for (i = 0; i < g->nr_fses; ++i) {
-    if (g->fses[i].is_root) {
-      ret[count] = safe_strdup (g, g->fses[i].device);
-      count++;
-    }
-  }
-  ret[count] = NULL;
-
   return ret;
 }
 
@@ -622,6 +605,111 @@ check_filesystem (guestfs_h *g, const char *device)
   return 0;
 }
 
+/* Set fs->product_name to the first line of the release file. */
+static int
+parse_release_file (guestfs_h *g, struct inspect_fs *fs,
+                    const char *release_filename)
+{
+  char **product_name = guestfs_head_n (g, 1, release_filename);
+  if (product_name == NULL)
+    return -1;
+  if (product_name[0] == NULL) {
+    error (g, "%s: file is empty", release_filename);
+    free_string_list (product_name);
+    return -1;
+  }
+
+  /* Note that this string becomes owned by the handle and will
+   * be freed by guestfs___free_inspect_info.
+   */
+  fs->product_name = product_name[0];
+  free (product_name);
+
+  return 0;
+}
+
+/* Parse generic MAJOR.MINOR from the fs->product_name string. */
+static int
+parse_major_minor (guestfs_h *g, struct inspect_fs *fs)
+{
+  char *major, *minor;
+
+  if (match2 (g, fs->product_name, re_major_minor, &major, &minor)) {
+    fs->major_version = parse_unsigned_int (g, major);
+    free (major);
+    if (fs->major_version == -1) {
+      free (minor);
+      return -1;
+    }
+    fs->minor_version = parse_unsigned_int (g, minor);
+    free (minor);
+    if (fs->minor_version == -1)
+      return -1;
+  }
+  return 0;
+}
+
+/* Ubuntu has /etc/lsb-release containing:
+ *   DISTRIB_ID=Ubuntu                                # Distro
+ *   DISTRIB_RELEASE=10.04                            # Version
+ *   DISTRIB_CODENAME=lucid
+ *   DISTRIB_DESCRIPTION="Ubuntu 10.04.1 LTS"         # Product name
+ * In theory other distros could have this LSB file, but none do.
+ */
+static int
+parse_lsb_release (guestfs_h *g, struct inspect_fs *fs)
+{
+  char **lines;
+  size_t i;
+  int r = 0;
+
+  lines = guestfs_head_n (g, 10, "/etc/lsb-release");
+  if (lines == NULL)
+    return -1;
+
+  for (i = 0; lines[i] != NULL; ++i) {
+    if (fs->distro == 0 &&
+        STREQ (lines[i], "DISTRIB_ID=Ubuntu")) {
+      fs->distro = OS_DISTRO_UBUNTU;
+      r = 1;
+    }
+    else if (STRPREFIX (lines[i], "DISTRIB_RELEASE=")) {
+      char *major, *minor;
+      if (match2 (g, &lines[i][16], re_major_minor, &major, &minor)) {
+        fs->major_version = parse_unsigned_int (g, major);
+        free (major);
+        if (fs->major_version == -1) {
+          free (minor);
+          free_string_list (lines);
+          return -1;
+        }
+        fs->minor_version = parse_unsigned_int (g, minor);
+        free (minor);
+        if (fs->minor_version == -1) {
+          free_string_list (lines);
+          return -1;
+        }
+      }
+    }
+    else if (fs->product_name == NULL &&
+             (STRPREFIX (lines[i], "DISTRIB_DESCRIPTION=\"") ||
+              STRPREFIX (lines[i], "DISTRIB_DESCRIPTION='"))) {
+      size_t len = strlen (lines[i]) - 21 - 1;
+      fs->product_name = safe_strndup (g, &lines[i][21], len);
+      r = 1;
+    }
+    else if (fs->product_name == NULL &&
+             STRPREFIX (lines[i], "DISTRIB_DESCRIPTION=")) {
+      size_t len = strlen (lines[i]) - 20;
+      fs->product_name = safe_strndup (g, &lines[i][20], len);
+      r = 1;
+    }
+  }
+
+  free_string_list (lines);
+  return r;
+}
+
 /* The currently mounted device is known to be a Linux root.  Try to
  * determine from this the distro, version, etc.  Also parse
  * /etc/fstab to determine the arrangement of mountpoints and
@@ -630,25 +718,23 @@ check_filesystem (guestfs_h *g, const char *device)
 static int
 check_linux_root (guestfs_h *g, struct inspect_fs *fs)
 {
+  int r;
+
   fs->type = OS_TYPE_LINUX;
 
+  if (guestfs_exists (g, "/etc/lsb-release") > 0) {
+    r = parse_lsb_release (g, fs);
+    if (r == -1)        /* error */
+      return -1;
+    if (r == 1)         /* ok - detected the release from this file */
+      goto skip_release_checks;
+  }
+
   if (guestfs_exists (g, "/etc/redhat-release") > 0) {
     fs->distro = OS_DISTRO_REDHAT_BASED; /* Something generic Red Hat-like. */
 
-    char **product_name = guestfs_head_n (g, 1, "/etc/redhat-release");
-    if (product_name == NULL)
-      return -1;
-    if (product_name[0] == NULL) {
-      error (g, "/etc/redhat-release file is empty");
-      free_string_list (product_name);
+    if (parse_release_file (g, fs, "/etc/redhat-release") == -1)
       return -1;
-    }
-
-    /* Note that this string becomes owned by the handle and will
-     * be freed by guestfs___free_inspect_info.
-     */
-    fs->product_name = product_name[0];
-    free (product_name);
 
     char *major, *minor;
     if ((major = match1 (g, fs->product_name, re_fedora)) != NULL) {
@@ -684,35 +770,48 @@ check_linux_root (guestfs_h *g, struct inspect_fs *fs)
   else if (guestfs_exists (g, "/etc/debian_version") > 0) {
     fs->distro = OS_DISTRO_DEBIAN;
 
-    char **product_name = guestfs_head_n (g, 1, "/etc/debian_version");
-    if (product_name == NULL)
+    if (parse_release_file (g, fs, "/etc/debian_version") == -1)
       return -1;
-    if (product_name[0] == NULL) {
-      error (g, "/etc/debian_version file is empty");
-      free_string_list (product_name);
+
+    if (parse_major_minor (g, fs) == -1)
+      return -1;
+  }
+  else if (guestfs_exists (g, "/etc/pardus-release") > 0) {
+    fs->distro = OS_DISTRO_PARDUS;
+
+    if (parse_release_file (g, fs, "/etc/pardus-release") == -1)
       return -1;
-    }
 
-    /* Note that this string becomes owned by the handle and will
-     * be freed by guestfs___free_inspect_info.
+    if (parse_major_minor (g, fs) == -1)
+      return -1;
+  }
+  else if (guestfs_exists (g, "/etc/arch-release") > 0) {
+    fs->distro = OS_DISTRO_ARCHLINUX;
+
+    /* /etc/arch-release file is empty and I can't see a way to
+     * determine the actual release or product string.
      */
-    fs->product_name = product_name[0];
-    free (product_name);
+  }
+  else if (guestfs_exists (g, "/etc/gentoo-release") > 0) {
+    fs->distro = OS_DISTRO_GENTOO;
 
-    char *major, *minor;
-    if (match2 (g, fs->product_name, re_debian, &major, &minor)) {
-      fs->major_version = parse_unsigned_int (g, major);
-      free (major);
-      if (fs->major_version == -1) {
-        free (minor);
-        return -1;
-      }
-      fs->minor_version = parse_unsigned_int (g, minor);
-      free (minor);
-      if (fs->minor_version == -1)
-        return -1;
-    }
+    if (parse_release_file (g, fs, "/etc/gentoo-release") == -1)
+      return -1;
+
+    if (parse_major_minor (g, fs) == -1)
+      return -1;
   }
+  else if (guestfs_exists (g, "/etc/meego-release") > 0) {
+    fs->distro = OS_DISTRO_MEEGO;
+
+    if (parse_release_file (g, fs, "/etc/meego-release") == -1)
+      return -1;
+
+    if (parse_major_minor (g, fs) == -1)
+      return -1;
+  }
+
+ skip_release_checks:;
 
   /* Determine the architecture. */
   const char *binaries[] =
@@ -749,7 +848,7 @@ check_linux_root (guestfs_h *g, struct inspect_fs *fs)
   guestfs_aug_rm (g, "/augeas/load//incl[. != \"/etc/fstab\"]");
   guestfs_aug_load (g);
 
-  int r = check_fstab (g, fs);
+  r = check_fstab (g, fs);
   guestfs_aug_close (g);
   if (r == -1)
     return -1;
@@ -1191,6 +1290,37 @@ search_for_root (guestfs_h *g, const char *root)
   return NULL;
 }
 
+char **
+guestfs__inspect_get_roots (guestfs_h *g)
+{
+  /* NB. Doesn't matter if g->nr_fses == 0.  We just return an empty
+   * list in this case.
+   */
+
+  size_t i;
+  size_t count = 0;
+  for (i = 0; i < g->nr_fses; ++i)
+    if (g->fses[i].is_root)
+      count++;
+
+  char **ret = calloc (count+1, sizeof (char *));
+  if (ret == NULL) {
+    perrorf (g, "calloc");
+    return NULL;
+  }
+
+  count = 0;
+  for (i = 0; i < g->nr_fses; ++i) {
+    if (g->fses[i].is_root) {
+      ret[count] = safe_strdup (g, g->fses[i].device);
+      count++;
+    }
+  }
+  ret[count] = NULL;
+
+  return ret;
+}
+
 char *
 guestfs__inspect_get_type (guestfs_h *g, const char *root)
 {
@@ -1227,11 +1357,16 @@ guestfs__inspect_get_distro (guestfs_h *g, const char *root)
 
   char *ret;
   switch (fs->distro) {
+  case OS_DISTRO_ARCHLINUX: ret = safe_strdup (g, "archlinux"); break;
   case OS_DISTRO_DEBIAN: ret = safe_strdup (g, "debian"); break;
   case OS_DISTRO_FEDORA: ret = safe_strdup (g, "fedora"); break;
+  case OS_DISTRO_GENTOO: ret = safe_strdup (g, "gentoo"); break;
+  case OS_DISTRO_MEEGO: ret = safe_strdup (g, "meego"); break;
+  case OS_DISTRO_PARDUS: ret = safe_strdup (g, "pardus"); break;
   case OS_DISTRO_REDHAT_BASED: ret = safe_strdup (g, "redhat-based"); break;
   case OS_DISTRO_RHEL: ret = safe_strdup (g, "rhel"); break;
   case OS_DISTRO_WINDOWS: ret = safe_strdup (g, "windows"); break;
+  case OS_DISTRO_UBUNTU: ret = safe_strdup (g, "ubuntu"); break;
   case OS_DISTRO_UNKNOWN: default: ret = safe_strdup (g, "unknown"); break;
   }