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authorNeilBrown <neilb@suse.de>2006-04-10 22:55:26 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-04-11 06:18:51 -0700
commitb5872b0dcc0501035d5ae53c60f8cbbb3798da8a (patch)
tree8f0baf4103c0e5b5b97eea35cc9f416fdedd86cf /fs/nfsd
parentb905b7b0a054d2ab3e0c9304def998546c93f6b5 (diff)
downloadop-kernel-dev-b5872b0dcc0501035d5ae53c60f8cbbb3798da8a.zip
op-kernel-dev-b5872b0dcc0501035d5ae53c60f8cbbb3798da8a.tar.gz
[PATCH] knfsd: nfsd4: fix acl xattr length return
We should be using the length from the second vfs_getxattr, in case it changed. (Note: there's still a small race here; we could end up returning -ENOMEM if the length increased between the first and second call. I don't know whether it's worth spending a lot of effort to fix that.) This makes XFS ACLs usable on NFS exports, which they currently aren't, since XFS appears to be returning a too-large value for vfs_getxattr() when it's passed a NULL buffer. So there's probably an XFS bug here too, though since getxattr with a NULL buffer is usually used to decide how much memory to allocate, it may be a fairly harmless bug in most cases. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/nfsd')
-rw-r--r--fs/nfsd/vfs.c6
1 files changed, 1 insertions, 5 deletions
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 3101833..6aa92d0 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -371,7 +371,6 @@ out_nfserr:
static ssize_t nfsd_getxattr(struct dentry *dentry, char *key, void **buf)
{
ssize_t buflen;
- int error;
buflen = vfs_getxattr(dentry, key, NULL, 0);
if (buflen <= 0)
@@ -381,10 +380,7 @@ static ssize_t nfsd_getxattr(struct dentry *dentry, char *key, void **buf)
if (!*buf)
return -ENOMEM;
- error = vfs_getxattr(dentry, key, *buf, buflen);
- if (error < 0)
- return error;
- return buflen;
+ return vfs_getxattr(dentry, key, *buf, buflen);
}
#endif
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