diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2010-01-30 16:11:21 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2010-03-03 14:07:57 -0500 |
| commit | 462d60577a997aa87c935ae4521bd303733a9f2b (patch) | |
| tree | 2b706cdb006078189ba409ad174d893d67b23daf | |
| parent | 3088dd7080d1ecc6d18c27ef9e617cbbd2a2e51e (diff) | |
| download | linux-3.10-462d60577a997aa87c935ae4521bd303733a9f2b.tar.gz linux-3.10-462d60577a997aa87c935ae4521bd303733a9f2b.tar.bz2 linux-3.10-462d60577a997aa87c935ae4521bd303733a9f2b.zip | |
fix NFS4 handling of mountpoint stat
RFC says we need to follow the chain of mounts if there's more
than one stacked on that point.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/nfsd/nfs4xdr.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index a8587e90fd5..bbf72d8f9fc 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -2121,9 +2121,15 @@ out_acl: * and this is the root of a cross-mounted filesystem. */ if (ignore_crossmnt == 0 && - exp->ex_path.mnt->mnt_root->d_inode == dentry->d_inode) { - err = vfs_getattr(exp->ex_path.mnt->mnt_parent, - exp->ex_path.mnt->mnt_mountpoint, &stat); + dentry == exp->ex_path.mnt->mnt_root) { + struct path path = exp->ex_path; + path_get(&path); + while (follow_up(&path)) { + if (path.dentry != path.mnt->mnt_root) + break; + } + err = vfs_getattr(path.mnt, path.dentry, &stat); + path_put(&path); if (err) goto out_nfserr; } |