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authorJeff Layton <jlayton@redhat.com>2012-12-20 17:08:32 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2012-12-20 18:50:06 -0500
commit2771261ec5b677a38f0cd5fcfc6cefd5393787ef (patch)
tree1977d9300293a73fa653695fbe37e6acd015cb78 /fs/open.c
parent0291c0a551d5b0856627f2cb294da05f122414a0 (diff)
downloadlinux-linaro-stable-2771261ec5b677a38f0cd5fcfc6cefd5393787ef.tar.gz
vfs: have chroot retry once on ESTALE error
Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/open.c')
-rw-r--r--fs/open.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/open.c b/fs/open.c
index 402dfcb6720b..a13a54d3e691 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -445,8 +445,9 @@ SYSCALL_DEFINE1(chroot, const char __user *, filename)
{
struct path path;
int error;
-
- error = user_path_dir(filename, &path);
+ unsigned int lookup_flags = LOOKUP_FOLLOW | LOOKUP_DIRECTORY;
+retry:
+ error = user_path_at(AT_FDCWD, filename, lookup_flags, &path);
if (error)
goto out;
@@ -465,6 +466,10 @@ SYSCALL_DEFINE1(chroot, const char __user *, filename)
error = 0;
dput_and_out:
path_put(&path);
+ if (retry_estale(error, lookup_flags)) {
+ lookup_flags |= LOOKUP_REVAL;
+ goto retry;
+ }
out:
return error;
}