diff -up ecryptfs-utils-90/src/libecryptfs/main.c.mtabfix ecryptfs-utils-90/src/libecryptfs/main.c
--- ecryptfs-utils-90/src/libecryptfs/main.c.mtabfix	2011-02-22 18:35:26.000000000 +0100
+++ ecryptfs-utils-90/src/libecryptfs/main.c	2011-08-11 10:24:24.274245958 +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-90/src/utils/mount.ecryptfs_private.c.mtabfix ecryptfs-utils-90/src/utils/mount.ecryptfs_private.c