On Mon, 2018-09-17 at 19:39 +0800, zhu.shangzhong@zte.com.cn wrote:
How to reproduce: 1. mount the nfs-ganesha export directory with NFSV3 2. create new users: user1 and user2, there is the same user group for user1 and user2 uid=9998(user1) gid=100(users) groups=100(users) uid=9997(user2) gid=100(users) groups=100(users) 3. log in using user1 and create new file named abc.txt 4. chmod 664 abc.txt 5. log in using user2, and write new content to abc.txt echo 'Hello' > abc.txt 6. The error "Operation not permitted" will be output
Expected result: user2 may write data to file abc.txt successfully.
The more detailed info could be found in http://tracker.ceph.com/issues/35961 The issue may be fixed by changing the following code, is it appropriate changes for fixing the issue?
src\FSAL\FSAL_CEPH\handle.c fsal_status_t ceph_setattr2(struct fsal_obj_handle *obj_hdl, bool bypass, struct state_t *state, struct attrlist *attrib_set) { ... if (FSAL_TEST_MASK(attrib_set->valid_mask, ATTR_ATIME_SERVER)) { struct timespec timestamp; mask |= CEPH_SETATTR_ATIME; // s/CEPH_SETATTR_ATIME/CEPH_SETATTR_ATIME_NOW ... if (FSAL_TEST_MASK(attrib_set->valid_mask, ATTR_MTIME_SERVER)) { struct timespec timestamp; mask |= CEPH_SETATTR_MTIME; // s/CEPH_SETATTR_MTIME/CEPH_SETATTR_MTIME_NOW ... }]
If I'm reading the ceph code right, then we need to do: mask |= CEPH_SETATTR_MTIME|CEPH_SETATTR_MTIME_NOW; The *_NOW fields just override how permissions are checked. -- Jeff Layton <jlayton@redhat.com>