diff options
| author | Jan Kara <jack@suse.cz> | 2016-05-26 16:10:38 +0200 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2016-09-22 10:56:19 +0200 |
| commit | fd5472ed44683cf593322a2ef54b9a7675dc780a (patch) | |
| tree | 24e1f8a7fa4a0ec32e88d8c3a28ab43bcd131b97 /fs | |
| parent | 69bca80744eef58fa155e8042996b968fec17b26 (diff) | |
| download | lwn-fd5472ed44683cf593322a2ef54b9a7675dc780a.tar.gz lwn-fd5472ed44683cf593322a2ef54b9a7675dc780a.zip | |
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>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ceph/acl.c | 5 | ||||
| -rw-r--r-- | fs/ceph/inode.c | 19 |
2 files changed, 16 insertions, 8 deletions
diff --git a/fs/ceph/acl.c b/fs/ceph/acl.c index d0b6b342dff9..987044bca1c2 100644 --- a/fs/ceph/acl.c +++ b/fs/ceph/acl.c @@ -125,6 +125,11 @@ int ceph_set_acl(struct inode *inode, struct posix_acl *acl, int type) 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 dd3a6dbf71eb..2aa3c0bcf3a5 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -1905,13 +1905,6 @@ int __ceph_setattr(struct inode *inode, struct iattr *attr) 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 @@ out_put: */ 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); } /* |