Prevent from error on umount /proc if userns are used.

Signed-off-by: Przemek Rudy <prudy1@o2.pl>
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>

diff --git a/src/lxc/conf.c b/src/lxc/conf.c
index ecbf24266ded56782df4edce43168d5af751292e..e3eaf15c8617d41257367198f96c50254933b5fc 100644 (file)
--- a/src/lxc/conf.c
+++ b/src/lxc/conf.c
@@ -1368,10 +1368,8 @@ int prepare_ramfs_root(char *root)
                        break;
        }
 
-       if (umount2("./proc", MNT_DETACH)) {
-               SYSERROR("Unable to umount /proc");
-               return -1;
-       }
+       /* This also can be skipped if a container uses unserns */
+       umount2("./proc", MNT_DETACH);
 
        /* It is weird, but chdir("..") moves us in a new root */
        if (chdir("..") == -1) {