diff options
| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-10-25 13:59:47 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-11-11 09:36:22 -0800 |
| commit | 6c36547293e6c46fe5df46e5e1b9ce9babb9eb37 (patch) | |
| tree | a1bde2f3414b83d000bb36ad6c3333af83673432 /fs | |
| parent | def3f17094d20fa85d17ff11dea54a6c6bfb3f8c (diff) | |
VFS: Fix the remaining automounter semantics regressions
commit 815d405ceff0d6964683f033e18b9b23a88fba87 upstream.
The concensus seems to be that system calls such as stat() etc should
not trigger an automount. Neither should the l* versions.
This patch therefore adds a LOOKUP_AUTOMOUNT flag to tag those lookups
that _should_ trigger an automount on the last path element.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
[ Edited to leave out the cases that are already covered by LOOKUP_OPEN,
LOOKUP_DIRECTORY and LOOKUP_CREATE - all of which also fundamentally
force automounting for their own reasons - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/namespace.c | 2 | ||||
| -rw-r--r-- | fs/nfs/super.c | 2 | ||||
| -rw-r--r-- | fs/quota/quota.c | 2 |
3 files changed, 3 insertions, 3 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index 304a55d0aa8..537dd96bea0 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -1758,7 +1758,7 @@ static int do_loopback(struct path *path, char *old_name, return err; if (!old_name || !*old_name) return -EINVAL; - err = kern_path(old_name, LOOKUP_FOLLOW, &old_path); + err = kern_path(old_name, LOOKUP_FOLLOW|LOOKUP_AUTOMOUNT, &old_path); if (err) return err; diff --git a/fs/nfs/super.c b/fs/nfs/super.c index ce40e5c568b..858d31be29c 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -2793,7 +2793,7 @@ static struct dentry *nfs_follow_remote_path(struct vfsmount *root_mnt, goto out_put_mnt_ns; ret = vfs_path_lookup(root_mnt->mnt_root, root_mnt, - export_path, LOOKUP_FOLLOW, nd); + export_path, LOOKUP_FOLLOW|LOOKUP_AUTOMOUNT, nd); nfs_referral_loop_unprotect(); put_mnt_ns(ns_private); diff --git a/fs/quota/quota.c b/fs/quota/quota.c index b34bdb25490..10b6be3ca28 100644 --- a/fs/quota/quota.c +++ b/fs/quota/quota.c @@ -355,7 +355,7 @@ SYSCALL_DEFINE4(quotactl, unsigned int, cmd, const char __user *, special, * resolution (think about autofs) and thus deadlocks could arise. */ if (cmds == Q_QUOTAON) { - ret = user_path_at(AT_FDCWD, addr, LOOKUP_FOLLOW, &path); + ret = user_path_at(AT_FDCWD, addr, LOOKUP_FOLLOW|LOOKUP_AUTOMOUNT, &path); if (ret) pathp = ERR_PTR(ret); else |