diff options
| -rw-r--r-- | fs/ceph/caps.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index 30acc7b046e..51546d54b84 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -2698,6 +2698,9 @@ void ceph_handle_caps(struct ceph_mds_session *session, u64 size, max_size; u64 tid; void *snaptrace; + size_t snaptrace_len; + void *flock; + u32 flock_len; int open_target_sessions = 0; dout("handle_caps from mds%d\n", mds); @@ -2707,7 +2710,6 @@ void ceph_handle_caps(struct ceph_mds_session *session, if (msg->front.iov_len < sizeof(*h)) goto bad; h = msg->front.iov_base; - snaptrace = h + 1; op = le32_to_cpu(h->op); vino.ino = le64_to_cpu(h->ino); vino.snap = CEPH_NOSNAP; @@ -2717,6 +2719,21 @@ void ceph_handle_caps(struct ceph_mds_session *session, size = le64_to_cpu(h->size); max_size = le64_to_cpu(h->max_size); + snaptrace = h + 1; + snaptrace_len = le32_to_cpu(h->snap_trace_len); + + if (le16_to_cpu(msg->hdr.version) >= 2) { + void *p, *end; + + p = snaptrace + snaptrace_len; + end = msg->front.iov_base + msg->front.iov_len; + ceph_decode_32_safe(&p, end, flock_len, bad); + flock = p; + } else { + flock = NULL; + flock_len = 0; + } + mutex_lock(&session->s_mutex); session->s_seq++; dout(" mds%d seq %lld cap seq %u\n", session->s_mds, session->s_seq, @@ -2755,7 +2772,7 @@ void ceph_handle_caps(struct ceph_mds_session *session, case CEPH_CAP_OP_IMPORT: handle_cap_import(mdsc, inode, h, session, - snaptrace, le32_to_cpu(h->snap_trace_len)); + snaptrace, snaptrace_len); ceph_check_caps(ceph_inode(inode), CHECK_CAPS_NODELAY, session); goto done_unlocked; |