diff options
| -rw-r--r-- | fs/ceph/xattr.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c index 1242db8d3444..159a1ffa4f4b 100644 --- a/fs/ceph/xattr.c +++ b/fs/ceph/xattr.c @@ -340,6 +340,18 @@ static ssize_t ceph_vxattrcb_caps(struct ceph_inode_info *ci, char *val, ceph_cap_string(issued), issued); } +static ssize_t ceph_vxattrcb_auth_mds(struct ceph_inode_info *ci, + char *val, size_t size) +{ + int ret; + + spin_lock(&ci->i_ceph_lock); + ret = ceph_fmt_xattr(val, size, "%d", + ci->i_auth_cap ? ci->i_auth_cap->session->s_mds : -1); + spin_unlock(&ci->i_ceph_lock); + return ret; +} + #define CEPH_XATTR_NAME(_type, _name) XATTR_CEPH_PREFIX #_type "." #_name #define CEPH_XATTR_NAME2(_type, _name, _name2) \ XATTR_CEPH_PREFIX #_type "." #_name "." #_name2 @@ -473,6 +485,13 @@ static struct ceph_vxattr ceph_common_vxattrs[] = { .exists_cb = NULL, .flags = VXATTR_FLAG_READONLY, }, + { + .name = "ceph.auth_mds", + .name_size = sizeof("ceph.auth_mds"), + .getxattr_cb = ceph_vxattrcb_auth_mds, + .exists_cb = NULL, + .flags = VXATTR_FLAG_READONLY, + }, { .name = NULL, 0 } /* Required table terminator */ }; |