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authorDavid Howells <dhowells@redhat.com>2011-01-14 21:45:31 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2011-01-16 04:07:33 +0300
commit6f45b65672c8017d5e210e338bb5858a938ef445 (patch)
treeb62877c489fb682033c37d30d91c53e4d0c3833a /fs/stat.c
parentcc53ce53c86924bfe98a12ea20b7465038a08792 (diff)
downloadlinux-6f45b65672c8017d5e210e338bb5858a938ef445.tar.xz
Add an AT_NO_AUTOMOUNT flag to suppress terminal automount
Add an AT_NO_AUTOMOUNT flag to suppress terminal automounting of automount point directories. This can be used by fstatat() users to permit the gathering of attributes on an automount point and also prevent mass-automounting of a directory of automount points by ls. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Ian Kent <raven@themaw.net> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/stat.c')
-rw-r--r--fs/stat.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/stat.c b/fs/stat.c
index 12e90e213900..d5c61cf2b703 100644
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -75,11 +75,13 @@ int vfs_fstatat(int dfd, const char __user *filename, struct kstat *stat,
int error = -EINVAL;
int lookup_flags = 0;
- if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0)
+ if ((flag & ~(AT_SYMLINK_NOFOLLOW | AT_NO_AUTOMOUNT)) != 0)
goto out;
if (!(flag & AT_SYMLINK_NOFOLLOW))
lookup_flags |= LOOKUP_FOLLOW;
+ if (flag & AT_NO_AUTOMOUNT)
+ lookup_flags |= LOOKUP_NO_AUTOMOUNT;
error = user_path_at(dfd, filename, lookup_flags, &path);
if (error)