diff options
| -rw-r--r-- | block/sheepdog.c | 78 |
1 files changed, 46 insertions, 32 deletions
diff --git a/block/sheepdog.c b/block/sheepdog.c index 776a1cc..991133e 100644 --- a/block/sheepdog.c +++ b/block/sheepdog.c @@ -468,7 +468,7 @@ static int connect_to_sdog(const char *addr, const char *port) if (ret) { error_report("unable to get address info %s, %s", addr, strerror(errno)); - return -1; + return -errno; } for (res = res0; res; res = res->ai_next) { @@ -495,7 +495,7 @@ static int connect_to_sdog(const char *addr, const char *port) dprintf("connected to %s:%s\n", addr, port); goto success; } - fd = -1; + fd = -errno; error_report("failed connect to %s:%s", addr, port); success: freeaddrinfo(res0); @@ -510,12 +510,13 @@ static int send_req(int sockfd, SheepdogReq *hdr, void *data, ret = qemu_send_full(sockfd, hdr, sizeof(*hdr), 0); if (ret < sizeof(*hdr)) { error_report("failed to send a req, %s", strerror(errno)); - return ret; + return -errno; } ret = qemu_send_full(sockfd, data, *wlen, 0); if (ret < *wlen) { error_report("failed to send a req, %s", strerror(errno)); + ret = -errno; } return ret; @@ -553,6 +554,7 @@ static int do_req(int sockfd, SheepdogReq *hdr, void *data, ret = qemu_recv_full(sockfd, hdr, sizeof(*hdr), 0); if (ret < sizeof(*hdr)) { error_report("failed to get a rsp, %s", strerror(errno)); + ret = -errno; goto out; } @@ -564,6 +566,7 @@ static int do_req(int sockfd, SheepdogReq *hdr, void *data, ret = qemu_recv_full(sockfd, data, *rlen, 0); if (ret < *rlen) { error_report("failed to get the data, %s", strerror(errno)); + ret = -errno; goto out; } } @@ -587,6 +590,7 @@ static int do_co_req(int sockfd, SheepdogReq *hdr, void *data, ret = qemu_co_recv(sockfd, hdr, sizeof(*hdr)); if (ret < sizeof(*hdr)) { error_report("failed to get a rsp, %s", strerror(errno)); + ret = -errno; goto out; } @@ -598,6 +602,7 @@ static int do_co_req(int sockfd, SheepdogReq *hdr, void *data, ret = qemu_co_recv(sockfd, data, *rlen); if (ret < *rlen) { error_report("failed to get the data, %s", strerror(errno)); + ret = -errno; goto out; } } @@ -787,7 +792,7 @@ static int get_sheep_fd(BDRVSheepdogState *s) fd = connect_to_sdog(s->addr, s->port); if (fd < 0) { error_report("%s", strerror(errno)); - return -1; + return fd; } socket_set_nonblock(fd); @@ -796,7 +801,7 @@ static int get_sheep_fd(BDRVSheepdogState *s) if (ret) { error_report("%s", strerror(errno)); closesocket(fd); - return -1; + return -errno; } qemu_aio_set_fd_handler(fd, co_read_response, NULL, aio_flush_request, s); @@ -883,7 +888,7 @@ static int find_vdi_name(BDRVSheepdogState *s, char *filename, uint32_t snapid, fd = connect_to_sdog(s->addr, s->port); if (fd < 0) { - return -1; + return fd; } memset(buf, 0, sizeof(buf)); @@ -904,14 +909,17 @@ static int find_vdi_name(BDRVSheepdogState *s, char *filename, uint32_t snapid, ret = do_req(fd, (SheepdogReq *)&hdr, buf, &wlen, &rlen); if (ret) { - ret = -1; goto out; } if (rsp->result != SD_RES_SUCCESS) { error_report("cannot get vdi info, %s, %s %d %s", sd_strerror(rsp->result), filename, snapid, tag); - ret = -1; + if (rsp->result == SD_RES_NO_VDI) { + ret = -ENOENT; + } else { + ret = -EIO; + } goto out; } *vid = rsp->vdi_id; @@ -980,7 +988,7 @@ static int coroutine_fn add_aio_request(BDRVSheepdogState *s, AIOReq *aio_req, if (ret < 0) { qemu_co_mutex_unlock(&s->lock); error_report("failed to send a req, %s", strerror(errno)); - return -EIO; + return -errno; } if (wlen) { @@ -988,7 +996,7 @@ static int coroutine_fn add_aio_request(BDRVSheepdogState *s, AIOReq *aio_req, if (ret < 0) { qemu_co_mutex_unlock(&s->lock); error_report("failed to send a data, %s", strerror(errno)); - return -EIO; + return -errno; } } @@ -1038,7 +1046,7 @@ static int read_write_object(int fd, char *buf, uint64_t oid, int copies, ret = do_req(fd, (SheepdogReq *)&hdr, buf, &wlen, &rlen); if (ret) { error_report("failed to send a request to the sheep"); - return -1; + return ret; } switch (rsp->result) { @@ -1046,7 +1054,7 @@ static int read_write_object(int fd, char *buf, uint64_t oid, int copies, return 0; default: error_report("%s", sd_strerror(rsp->result)); - return -1; + return -EIO; } } @@ -1082,10 +1090,12 @@ static int sd_open(BlockDriverState *bs, const char *filename, int flags) memset(vdi, 0, sizeof(vdi)); memset(tag, 0, sizeof(tag)); if (parse_vdiname(s, filename, vdi, &snapid, tag) < 0) { + ret = -EINVAL; goto out; } s->fd = get_sheep_fd(s); if (s->fd < 0) { + ret = s->fd; goto out; } @@ -1099,6 +1109,7 @@ static int sd_open(BlockDriverState *bs, const char *filename, int flags) s->flush_fd = connect_to_sdog(s->addr, s->port); if (s->flush_fd < 0) { error_report("failed to connect"); + ret = s->flush_fd; goto out; } } @@ -1111,6 +1122,7 @@ static int sd_open(BlockDriverState *bs, const char *filename, int flags) fd = connect_to_sdog(s->addr, s->port); if (fd < 0) { error_report("failed to connect"); + ret = fd; goto out; } @@ -1139,7 +1151,7 @@ out: closesocket(s->fd); } g_free(buf); - return -1; + return ret; } static int do_sd_create(char *filename, int64_t vdi_size, @@ -1154,7 +1166,7 @@ static int do_sd_create(char *filename, int64_t vdi_size, fd = connect_to_sdog(addr, port); if (fd < 0) { - return -EIO; + return fd; } memset(buf, 0, sizeof(buf)); @@ -1177,7 +1189,7 @@ static int do_sd_create(char *filename, int64_t vdi_size, closesocket(fd); if (ret) { - return -EIO; + return ret; } if (rsp->result != SD_RES_SUCCESS) { @@ -1294,8 +1306,9 @@ static int sd_create(const char *filename, QEMUOptionParameter *options) } ret = bdrv_file_open(&bs, backing_file, 0); - if (ret < 0) - return -EIO; + if (ret < 0) { + return ret; + } s = bs->opaque; @@ -1379,7 +1392,7 @@ static int sd_truncate(BlockDriverState *bs, int64_t offset) fd = connect_to_sdog(s->addr, s->port); if (fd < 0) { - return -EIO; + return fd; } /* we don't need to update entire object */ @@ -1391,10 +1404,9 @@ static int sd_truncate(BlockDriverState *bs, int64_t offset) if (ret < 0) { error_report("failed to update an inode."); - return -EIO; } - return 0; + return ret; } /* @@ -1464,6 +1476,7 @@ static int sd_create_branch(BDRVSheepdogState *s) fd = connect_to_sdog(s->addr, s->port); if (fd < 0) { error_report("failed to connect"); + ret = fd; goto out; } @@ -1606,8 +1619,9 @@ static coroutine_fn int sd_co_writev(BlockDriverState *bs, int64_t sector_num, if (bs->growable && sector_num + nb_sectors > bs->total_sectors) { /* TODO: shouldn't block here */ - if (sd_truncate(bs, (sector_num + nb_sectors) * SECTOR_SIZE) < 0) { - return -EIO; + ret = sd_truncate(bs, (sector_num + nb_sectors) * SECTOR_SIZE); + if (ret < 0) { + return ret; } bs->total_sectors = sector_num + nb_sectors; } @@ -1724,7 +1738,7 @@ static int sd_snapshot_create(BlockDriverState *bs, QEMUSnapshotInfo *sn_info) /* refresh inode. */ fd = connect_to_sdog(s->addr, s->port); if (fd < 0) { - ret = -EIO; + ret = fd; goto cleanup; } @@ -1732,7 +1746,6 @@ static int sd_snapshot_create(BlockDriverState *bs, QEMUSnapshotInfo *sn_info) s->inode.nr_copies, datalen, 0, 0, s->cache_enabled); if (ret < 0) { error_report("failed to write snapshot's inode."); - ret = -EIO; goto cleanup; } @@ -1741,7 +1754,6 @@ static int sd_snapshot_create(BlockDriverState *bs, QEMUSnapshotInfo *sn_info) if (ret < 0) { error_report("failed to create inode for snapshot. %s", strerror(errno)); - ret = -EIO; goto cleanup; } @@ -1752,7 +1764,6 @@ static int sd_snapshot_create(BlockDriverState *bs, QEMUSnapshotInfo *sn_info) if (ret < 0) { error_report("failed to read new inode info. %s", strerror(errno)); - ret = -EIO; goto cleanup; } @@ -1773,7 +1784,7 @@ static int sd_snapshot_goto(BlockDriverState *bs, const char *snapshot_id) char *buf = NULL; uint32_t vid; uint32_t snapid = 0; - int ret = -ENOENT, fd; + int ret = 0, fd; old_s = g_malloc(sizeof(BDRVSheepdogState)); @@ -1791,13 +1802,13 @@ static int sd_snapshot_goto(BlockDriverState *bs, const char *snapshot_id) ret = find_vdi_name(s, vdi, snapid, tag, &vid, 1); if (ret) { error_report("Failed to find_vdi_name"); - ret = -ENOENT; goto out; } fd = connect_to_sdog(s->addr, s->port); if (fd < 0) { error_report("failed to connect"); + ret = fd; goto out; } @@ -1808,7 +1819,6 @@ static int sd_snapshot_goto(BlockDriverState *bs, const char *snapshot_id) closesocket(fd); if (ret) { - ret = -ENOENT; goto out; } @@ -1861,6 +1871,7 @@ static int sd_snapshot_list(BlockDriverState *bs, QEMUSnapshotInfo **psn_tab) fd = connect_to_sdog(s->addr, s->port); if (fd < 0) { + ret = fd; goto out; } @@ -1888,6 +1899,7 @@ static int sd_snapshot_list(BlockDriverState *bs, QEMUSnapshotInfo **psn_tab) fd = connect_to_sdog(s->addr, s->port); if (fd < 0) { error_report("failed to connect"); + ret = fd; goto out; } @@ -1925,6 +1937,10 @@ out: g_free(vdi_inuse); + if (ret < 0) { + return ret; + } + return found; } @@ -1940,8 +1956,7 @@ static int do_load_save_vmstate(BDRVSheepdogState *s, uint8_t *data, fd = connect_to_sdog(s->addr, s->port); if (fd < 0) { - ret = -EIO; - goto cleanup; + return fd; } while (size) { @@ -1965,7 +1980,6 @@ static int do_load_save_vmstate(BDRVSheepdogState *s, uint8_t *data, if (ret < 0) { error_report("failed to save vmstate %s", strerror(errno)); - ret = -EIO; goto cleanup; } |