diff options
-rw-r--r-- | hw/virtio-9p-debug.c | 17 | ||||
-rw-r--r-- | hw/virtio-9p.c | 41 | ||||
-rw-r--r-- | hw/virtio-9p.h | 21 |
3 files changed, 79 insertions, 0 deletions
diff --git a/hw/virtio-9p-debug.c b/hw/virtio-9p-debug.c index 045774f7ef..85c9900672 100644 --- a/hw/virtio-9p-debug.c +++ b/hw/virtio-9p-debug.c @@ -602,6 +602,23 @@ void pprint_pdu(V9fsPDU *pdu) fprintf(llogfile, "RLOCK: ("); pprint_int8(pdu, 0, &offset, "status"); break; + case P9_TGETLOCK: + fprintf(llogfile, "TGETLOCK: ("); + pprint_int32(pdu, 0, &offset, "fid"); + pprint_int8(pdu, 0, &offset, ", type"); + pprint_int64(pdu, 0, &offset, ", start"); + pprint_int64(pdu, 0, &offset, ", length"); + pprint_int32(pdu, 0, &offset, ", proc_id"); + pprint_str(pdu, 0, &offset, ", client_id"); + break; + case P9_RGETLOCK: + fprintf(llogfile, "RGETLOCK: ("); + pprint_int8(pdu, 0, &offset, "type"); + pprint_int64(pdu, 0, &offset, ", start"); + pprint_int64(pdu, 0, &offset, ", length"); + pprint_int32(pdu, 0, &offset, ", proc_id"); + pprint_str(pdu, 0, &offset, ", client_id"); + break; default: fprintf(llogfile, "unknown(%d): (", pdu->id); break; 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, diff --git a/hw/virtio-9p.h b/hw/virtio-9p.h index 4555f39752..6a688950e3 100644 --- a/hw/virtio-9p.h +++ b/hw/virtio-9p.h @@ -39,6 +39,8 @@ enum { P9_RREADDIR, P9_TLOCK = 52, P9_RLOCK, + P9_TGETLOCK = 54, + P9_RGETLOCK, P9_TLINK = 70, P9_RLINK, P9_TMKDIR = 72, @@ -464,6 +466,25 @@ typedef struct V9fsLockState V9fsFlock *flock; } V9fsLockState; +typedef struct V9fsGetlock +{ + uint8_t type; + uint64_t start; /* absolute offset */ + uint64_t length; + uint32_t proc_id; + V9fsString client_id; +} V9fsGetlock; + +typedef struct V9fsGetlockState +{ + V9fsPDU *pdu; + size_t offset; + struct stat stbuf; + V9fsFidState *fidp; + V9fsGetlock *glock; +} V9fsGetlockState; + + extern size_t pdu_packunpack(void *addr, struct iovec *sg, int sg_count, size_t offset, size_t size, int pack); |