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ceph: support v2 client_caps encoding 

Add support for v2 encoding of MClientCaps, which includes a flock blob.

Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Sage Weil 2010-08-02 15:09:39 -07:00
parent cbbfe49905
commit ce1fbc8dd6
1 changed files with 19 additions and 2 deletions
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21
fs/ceph/caps.c
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@ -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;