ceph: Propagate dentry down to inode_change_ok()
To avoid clearing of capabilities or security related extended
attributes too early, inode_change_ok() will need to take dentry instead
of inode. ceph_setattr() has the dentry easily available but
__ceph_setattr() is also called from ceph_set_acl() where dentry is not
easily available. Luckily that call path does not need inode_change_ok()
to be called anyway. So reorganize functions a bit so that
inode_change_ok() is called only from paths where dentry is available.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>
diff --git a/fs/ceph/acl.c b/fs/ceph/acl.c
index d0b6b342..987044b 100644
--- a/fs/ceph/acl.c
+++ b/fs/ceph/acl.c
@@ -125,6 +125,11 @@
goto out_free;
}
+ if (ceph_snap(inode) != CEPH_NOSNAP) {
+ ret = -EROFS;
+ goto out_free;
+ }
+
if (new_mode != old_mode) {
newattrs.ia_mode = new_mode;
newattrs.ia_valid = ATTR_MODE;
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index dd3a6db..2aa3c0bc 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -1905,13 +1905,6 @@
int inode_dirty_flags = 0;
bool lock_snap_rwsem = false;
- if (ceph_snap(inode) != CEPH_NOSNAP)
- return -EROFS;
-
- err = inode_change_ok(inode, attr);
- if (err != 0)
- return err;
-
prealloc_cf = ceph_alloc_cap_flush();
if (!prealloc_cf)
return -ENOMEM;
@@ -2124,7 +2117,17 @@
*/
int ceph_setattr(struct dentry *dentry, struct iattr *attr)
{
- return __ceph_setattr(d_inode(dentry), attr);
+ struct inode *inode = d_inode(dentry);
+ int err;
+
+ if (ceph_snap(inode) != CEPH_NOSNAP)
+ return -EROFS;
+
+ err = inode_change_ok(inode, attr);
+ if (err != 0)
+ return err;
+
+ return __ceph_setattr(inode, attr);
}
/*