From 7f571e320e39a5dd0bb7ab2c1b2a40b174879b18 Mon Sep 17 00:00:00 2001
From: Miklos Szeredi <miklos@szeredi.hu>
Date: Wed, 25 Jul 2007 09:36:52 +0000
Subject: Don't call /bin/[u]mount if /etc/mtab is a symlink

---
 lib/mount_util.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'lib/mount_util.c')

diff --git a/lib/mount_util.c b/lib/mount_util.c
index dccecdf..55b5f4e 100644
--- a/lib/mount_util.c
+++ b/lib/mount_util.c
@@ -14,15 +14,29 @@
 #include <dirent.h>
 #include <errno.h>
 #include <limits.h>
+#include <mntent.h>
 #include <sys/stat.h>
 #include <sys/wait.h>
 
+static int mtab_is_symlink(void)
+{
+    struct stat stbuf;
+
+    if (lstat(_PATH_MOUNTED, &stbuf) != -1 && S_ISLNK(stbuf.st_mode))
+        return 1;
+    else
+        return 0;
+}
+
 int fuse_mnt_add_mount(const char *progname, const char *fsname,
                        const char *mnt, const char *type, const char *opts)
 {
     int res;
     int status;
 
+    if (mtab_is_symlink())
+        return 0;
+
     res = fork();
     if (res == -1) {
         fprintf(stderr, "%s: fork: %s\n", progname, strerror(errno));
@@ -72,6 +86,9 @@ int fuse_mnt_umount(const char *progname, const char *mnt, int lazy)
     int res;
     int status;
 
+    if (mtab_is_symlink())
+        return 0;
+
     res = fork();
     if (res == -1) {
         fprintf(stderr, "%s: fork: %s\n", progname, strerror(errno));
-- 
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