build: Add ./configure --disable-fuse option.

[libguestfs.git] / daemon / mount.c

diff --git a/daemon/mount.c b/daemon/mount.c
index 8cf6874..ccd07c6 100644 (file)
--- a/daemon/mount.c
+++ b/daemon/mount.c
@@ -41,19 +41,19 @@ int root_mounted = 0;
  */
 
 int
-do_mount_vfs (char *options, char *vfstype,
-              char *device, char *mountpoint)
+do_mount_vfs (const char *options, const char *vfstype,
+              const char *device, const char *mountpoint)
 {
   int r, is_root;
   char *mp;
   char *error;
 
-  RESOLVE_DEVICE (device, return -1);
+  ABS_PATH (mountpoint, 0, return -1);
 
-  is_root = strcmp (mountpoint, "/") == 0;
+  is_root = STREQ (mountpoint, "/");
 
   if (!root_mounted && !is_root) {
-    reply_with_error ("mount: you must mount something on / first");
+    reply_with_error ("you must mount something on / first");
     return -1;
   }
 
@@ -71,7 +71,7 @@ do_mount_vfs (char *options, char *vfstype,
                  "mount", "-o", options, device, mp, NULL);
   free (mp);
   if (r == -1) {
-    reply_with_error ("mount: %s on %s: %s", device, mountpoint, error);
+    reply_with_error ("%s on %s: %s", device, mountpoint, error);
     free (error);
     return -1;
   }
@@ -83,20 +83,20 @@ do_mount_vfs (char *options, char *vfstype,
 }
 
 int
-do_mount (char *device, char *mountpoint)
+do_mount (const char *device, const char *mountpoint)
 {
   return do_mount_vfs ("sync,noatime", NULL, device, mountpoint);
 }
 
 int
-do_mount_ro (char *device, char *mountpoint)
+do_mount_ro (const char *device, const char *mountpoint)
 {
   return do_mount_vfs ("ro", NULL, device, mountpoint);
 }
 
 int
-do_mount_options (char *options, char *device,
-                  char *mountpoint)
+do_mount_options (const char *options, const char *device,
+                  const char *mountpoint)
 {
   return do_mount_vfs (options, NULL, device, mountpoint);
 }
@@ -105,28 +105,29 @@ do_mount_options (char *options, char *device,
  * is kept updated.
  */
 int
-do_umount (char *pathordevice)
+do_umount (const char *pathordevice)
 {
-  int freeit = 0, r;
-  char *buf;
+  int r;
   char *err;
+  char *buf;
+  int is_dev;
 
-  if (strncmp (pathordevice, "/dev/", 5) == 0) {
-    buf = pathordevice;
-    RESOLVE_DEVICE (buf, return -1);
-  } else {
-    buf = sysroot_path (pathordevice);
-    if (buf == NULL) {
-      reply_with_perror ("malloc");
-      return -1;
-    }
-    freeit = 1;
+  is_dev = STREQLEN (pathordevice, "/dev/", 5);
+  buf = is_dev ? strdup (pathordevice)
+               : sysroot_path (pathordevice);
+  if (buf == NULL) {
+    reply_with_perror ("malloc");
+    return -1;
   }
 
+  if (is_dev)
+    RESOLVE_DEVICE (buf, 0, { free (buf); return -1; });
+
   r = command (NULL, &err, "umount", buf, NULL);
-  if (freeit) free (buf);
+  free (buf);
+
   if (r == -1) {
-    reply_with_error ("umount: %s: %s", pathordevice, err);
+    reply_with_error ("%s: %s", pathordevice, err);
     free (err);
     return -1;
   }
@@ -148,6 +149,7 @@ mounts_or_mountpoints (int mp)
   char *p, *pend, *p2;
   int len;
   char matching[5 + sysroot_len];
+  size_t i;
 
   r = command (&out, &err, "mount", NULL);
   if (r == -1) {
@@ -203,6 +205,26 @@ mounts_or_mountpoints (int mp)
   if (add_string (&ret, &size, &alloc, NULL) == -1)
     return NULL;
 
+  /* Convert /dev/mapper LV paths into canonical paths (RHBZ#646432). */
+  for (i = 0; ret[i] != NULL; i += mp ? 2 : 1) {
+    if (STRPREFIX (ret[i], "/dev/mapper/") || STRPREFIX (ret[i], "/dev/dm-")) {
+      char *canonical;
+      r = lv_canonical (ret[i], &canonical);
+      if (r == -1) {
+        free_strings (ret);
+        return NULL;
+      }
+      if (r == 1) {
+        free (ret[i]);
+        ret[i] = canonical;
+      }
+      /* Ignore the case where r == 0.  This might happen where
+       * eg. a LUKS /dev/mapper device is mounted, but that won't
+       * correspond to any LV.
+       */
+    }
+  }
+
   return ret;
 }
 
@@ -313,15 +335,12 @@ do_umount_all (void)
  * device.
  */
 int
-do_mount_loop (char *file, char *mountpoint)
+do_mount_loop (const char *file, const char *mountpoint)
 {
   int r;
   char *buf, *mp;
   char *error;
 
-  NEED_ROOT (-1);
-  ABS_PATH (file, return -1);
-
   /* We have to prefix /sysroot on both the filename and the mountpoint. */
   mp = sysroot_path (mountpoint);
   if (!mp) {
@@ -340,7 +359,7 @@ do_mount_loop (char *file, char *mountpoint)
   free (mp);
   free (buf);
   if (r == -1) {
-    reply_with_error ("mount: %s on %s: %s", file, mountpoint, error);
+    reply_with_error ("%s on %s: %s", file, mountpoint, error);
     free (error);
     return -1;
   }
@@ -353,19 +372,19 @@ do_mount_loop (char *file, char *mountpoint)
  * mkmountpoint case) set the root_mounted flag.
  */
 int
-do_mkmountpoint (char *path)
+do_mkmountpoint (const char *path)
 {
   int r;
 
-  /* NEED_ROOT (-1); - we don't want this test for this call. */
-  ABS_PATH (path, return -1);
+  /* NEED_ROOT (return -1); - we don't want this test for this call. */
+  ABS_PATH (path, 0, return -1);
 
   CHROOT_IN;
   r = mkdir (path, 0777);
   CHROOT_OUT;
 
   if (r == -1) {
-    reply_with_perror ("mkmountpoint: %s", path);
+    reply_with_perror ("%s", path);
     return -1;
   }
 
@@ -378,19 +397,19 @@ do_mkmountpoint (char *path)
 }
 
 int
-do_rmmountpoint (char *path)
+do_rmmountpoint (const char *path)
 {
   int r;
 
-  NEED_ROOT (-1);
-  ABS_PATH (path, return -1);
+  /* NEED_ROOT (return -1); - we don't want this test for this call. */
+  ABS_PATH (path, 0, return -1);
 
   CHROOT_IN;
   r = rmdir (path);
   CHROOT_OUT;
 
   if (r == -1) {
-    reply_with_perror ("rmmountpoint: %s", path);
+    reply_with_perror ("%s", path);
     return -1;
   }