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| author | Jeff Layton <jlayton@redhat.com> | 2012-12-11 12:10:11 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-12-20 18:50:05 -0500 |
| commit | 87fa55952b7347175c6e2f03874869ad2c055adb (patch) | |
| tree | 8795b6a6794a1c3988cea32fb2471bd3cd235ef9 /fs | |
| parent | 48f7530d3f722617aa7cfea62b09b0c1a8d0173e (diff) | |
| download | linux-87fa55952b7347175c6e2f03874869ad2c055adb.tar.gz | |
vfs: have faccessat retry once on an ESTALE error
Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/open.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/open.c b/fs/open.c index 07449b911a4d..a994ccf39b40 100644 --- a/fs/open.c +++ b/fs/open.c @@ -316,6 +316,7 @@ SYSCALL_DEFINE3(faccessat, int, dfd, const char __user *, filename, int, mode) struct path path; struct inode *inode; int res; + unsigned int lookup_flags = LOOKUP_FOLLOW; if (mode & ~S_IRWXO) /* where's F_OK, X_OK, W_OK, R_OK? */ return -EINVAL; @@ -338,8 +339,8 @@ SYSCALL_DEFINE3(faccessat, int, dfd, const char __user *, filename, int, mode) } old_cred = override_creds(override_cred); - - res = user_path_at(dfd, filename, LOOKUP_FOLLOW, &path); +retry: + res = user_path_at(dfd, filename, lookup_flags, &path); if (res) goto out; @@ -374,6 +375,10 @@ SYSCALL_DEFINE3(faccessat, int, dfd, const char __user *, filename, int, mode) out_path_release: path_put(&path); + if (retry_estale(res, lookup_flags)) { + lookup_flags |= LOOKUP_REVAL; + goto retry; + } out: revert_creds(old_cred); put_cred(override_cred); |