diff -up ecryptfs-utils-87/src/libecryptfs/main.c.mtabfix ecryptfs-utils-87/src/libecryptfs/main.c
--- ecryptfs-utils-87/src/libecryptfs/main.c.mtabfix 2011-03-09 14:30:32.000000000 +0100
+++ ecryptfs-utils-87/src/libecryptfs/main.c 2011-07-11 14:10:40.525812683 +0200
@@ -382,6 +382,7 @@ out:
int ecryptfs_mount(char *source, char *target, unsigned long flags, char *opts)
{
+ char dummy;
FILE *mtab_fd = NULL;
struct mntent mountent;
char *fullpath_source = NULL;
@@ -425,11 +426,14 @@ int ecryptfs_mount(char *source, char *t
syslog(LOG_ERR, "Failed to perform eCryptfs mount: [%m]\n");
goto out;
}
- mtab_fd = setmntent("/etc/mtab", "a");
- if (!mtab_fd) {
- rc = -EACCES;
- syslog(LOG_ERR, "Failed to update the mount table\n");
- goto out;
+ /* it's possible that /etc/mtab is just a symlink to /proc/mounts */
+ if (readlink("/etc/mtab", &dummy, 1) < 0) {
+ mtab_fd = setmntent("/etc/mtab", "a");
+ if (!mtab_fd) {
+ rc = -EACCES;
+ syslog(LOG_ERR, "Failed to update the mount table\n");
+ goto out;
+ }
}
mountent.mnt_fsname = fullpath_source;
mountent.mnt_dir = fullpath_target;
@@ -464,7 +468,7 @@ int ecryptfs_mount(char *source, char *t
}
mountent.mnt_freq = 0;
mountent.mnt_passno = 0;
- if (addmntent(mtab_fd, &mountent)) {
+ if (mtab_fd && addmntent(mtab_fd, &mountent)) {
rc = -EIO;
syslog(LOG_ERR, "Failed to write to the mount "
"table\n");
diff -up ecryptfs-utils-87/src/utils/mount.ecryptfs_private.c.mtabfix ecryptfs-utils-87/src/utils/mount.ecryptfs_private.c
--- ecryptfs-utils-87/src/utils/mount.ecryptfs_private.c.mtabfix 2011-07-11 13:53:36.942438496 +0200
+++ ecryptfs-utils-87/src/utils/mount.ecryptfs_private.c 2011-07-11 13:53:36.954438583 +0200
@@ -219,9 +219,18 @@ int check_ownerships(int uid, char *path
int update_mtab(char *dev, char *mnt, char *opt) {
-/* Update /etc/mtab with new mount entry.
+/* Update /etc/mtab with new mount entry unless it is a symbolic link
* Return 0 on success, 1 on failure.
*/
+ char dummy;
+ int useMtab;
+ /* Check if mtab is a symlink */
+ useMtab = (readlink("/etc/mtab", &dummy, 1) < 0);
+ if (!useMtab) {
+ /* No need updating mtab */
+ return 0;
+ }
+
FILE *fh;
struct mntent m;
fh = setmntent("/etc/mtab", "a");