summaryrefslogtreecommitdiff
path: root/fs
diff options
context:
space:
mode:
authorNeilBrown <neilb@suse.de>2022-09-08 05:08:40 +0300
committerChuck Lever <chuck.lever@oracle.com>2022-09-09 00:53:24 +0300
commit00801cd92d91e94aa04d687f9bb9a9104e7c3d46 (patch)
tree0d770e2196921ec19993da366fcb3309fb492c32 /fs
parent6930bcbfb6ceda63e298c6af6d733ecdf6bd4cde (diff)
downloadlinux-00801cd92d91e94aa04d687f9bb9a9104e7c3d46.tar.xz
NFSD: fix regression with setting ACLs.
A recent patch moved ACL setting into nfsd_setattr(). Unfortunately it didn't work as nfsd_setattr() aborts early if iap->ia_valid is 0. Remove this test, and instead avoid calling notify_change() when ia_valid is 0. This means that nfsd_setattr() will now *always* lock the inode. Previously it didn't if only a ATTR_MODE change was requested on a symlink (see Commit 15b7a1b86d66 ("[PATCH] knfsd: fix setattr-on-symlink error return")). I don't think this change really matters. Fixes: c0cbe70742f4 ("NFSD: add posix ACLs to struct nfsd_attrs") Signed-off-by: NeilBrown <neilb@suse.de> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/nfsd/vfs.c19
1 files changed, 9 insertions, 10 deletions
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 9f486b788ed0..19f28c33e44d 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -300,6 +300,10 @@ commit_metadata(struct svc_fh *fhp)
static void
nfsd_sanitize_attrs(struct inode *inode, struct iattr *iap)
{
+ /* Ignore mode updates on symlinks */
+ if (S_ISLNK(inode->i_mode))
+ iap->ia_valid &= ~ATTR_MODE;
+
/* sanitize the mode change */
if (iap->ia_valid & ATTR_MODE) {
iap->ia_mode &= S_IALLUGO;
@@ -353,7 +357,7 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
int accmode = NFSD_MAY_SATTR;
umode_t ftype = 0;
__be32 err;
- int host_err;
+ int host_err = 0;
bool get_write_count;
bool size_change = (iap->ia_valid & ATTR_SIZE);
@@ -391,13 +395,6 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
dentry = fhp->fh_dentry;
inode = d_inode(dentry);
- /* Ignore any mode updates on symlinks */
- if (S_ISLNK(inode->i_mode))
- iap->ia_valid &= ~ATTR_MODE;
-
- if (!iap->ia_valid)
- return 0;
-
nfsd_sanitize_attrs(inode, iap);
if (check_guard && guardtime != inode->i_ctime.tv_sec)
@@ -448,8 +445,10 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
goto out_unlock;
}
- iap->ia_valid |= ATTR_CTIME;
- host_err = notify_change(&init_user_ns, dentry, iap, NULL);
+ if (iap->ia_valid) {
+ iap->ia_valid |= ATTR_CTIME;
+ host_err = notify_change(&init_user_ns, dentry, iap, NULL);
+ }
out_unlock:
if (attr->na_seclabel && attr->na_seclabel->len)