diff options
Diffstat (limited to 'hw/virtio-9p.c')
| -rw-r--r-- | hw/virtio-9p.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/hw/virtio-9p.c b/hw/virtio-9p.c index 20acb5b1e6..8ae233eb80 100644 --- a/hw/virtio-9p.c +++ b/hw/virtio-9p.c @@ -3203,6 +3203,46 @@ out: qemu_free(vs); } +/* + * When a TGETLOCK request comes, always return success because all lock + * handling is done by client's VFS layer. + */ + +static void v9fs_getlock(V9fsState *s, V9fsPDU *pdu) +{ + int32_t fid, err = 0; + V9fsGetlockState *vs; + + vs = qemu_mallocz(sizeof(*vs)); + vs->pdu = pdu; + vs->offset = 7; + + vs->glock = qemu_malloc(sizeof(*vs->glock)); + pdu_unmarshal(vs->pdu, vs->offset, "dbqqds", &fid, &vs->glock->type, + &vs->glock->start, &vs->glock->length, &vs->glock->proc_id, + &vs->glock->client_id); + + vs->fidp = lookup_fid(s, fid); + if (vs->fidp == NULL) { + err = -ENOENT; + goto out; + } + + err = v9fs_do_fstat(s, vs->fidp->fs.fd, &vs->stbuf); + if (err < 0) { + err = -errno; + goto out; + } + vs->glock->type = F_UNLCK; + vs->offset += pdu_marshal(vs->pdu, vs->offset, "bqqds", vs->glock->type, + vs->glock->start, vs->glock->length, vs->glock->proc_id, + &vs->glock->client_id); +out: + complete_pdu(s, vs->pdu, err); + qemu_free(vs->glock); + qemu_free(vs); +} + static void v9fs_mkdir_post_lstat(V9fsState *s, V9fsMkState *vs, int err) { if (err == -1) { @@ -3466,6 +3506,7 @@ static pdu_handler_t *pdu_handlers[] = { [P9_TMKNOD] = v9fs_mknod, [P9_TRENAME] = v9fs_rename, [P9_TLOCK] = v9fs_lock, + [P9_TGETLOCK] = v9fs_getlock, [P9_TMKDIR] = v9fs_mkdir, [P9_TVERSION] = v9fs_version, [P9_TLOPEN] = v9fs_open, |