[libvirt] [PATCH v3 3/3] Storage: Use errno parameter in virReportSystemError

Use errno parameter in virReportSystemError. Remove hold function return values if don't need. Signed-off-by: Yi Li <yili(a)winhong.com&gt; --- src/storage/storage_backend_rbd.c | 159 ++++++++++++++++++-------------------- 1 file changed, 76 insertions(+), 83 deletions(-) diff --git a/src/storage/storage_backend_rbd.c b/src/storage/storage_backend_rbd.c index 5f14156..78a8e95 100644 --- a/src/storage/storage_backend_rbd.c +++ b/src/storage/storage_backend_rbd.c @@ -184,7 +184,7 @@ static int virStorageBackendRBDOpenRADOSConn(virStorageBackendRBDStatePtr ptr, virStoragePoolDefPtr def) { - int rc, ret = -1; + int ret = -1; virStoragePoolSourcePtr source = &def->source; virStorageAuthDefPtr authdef = source->auth; unsigned char *secret_value = NULL; @@ -202,8 +202,8 @@ virStorageBackendRBDOpenRADOSConn(virStorageBackendRBDStatePtr ptr, if (authdef) { VIR_DEBUG("Using cephx authorization, username: %s", authdef->username); - if ((rc = rados_create(&ptr->cluster, authdef->username)) < 0) { - virReportSystemError(-rc, "%s", _("failed to initialize RADOS")); + if (rados_create(&ptr->cluster, authdef->username) < 0) { + virReportSystemError(errno, "%s", _("failed to initialize RADOS")); goto cleanup; } @@ -318,8 +318,8 @@ virStorageBackendRBDOpenRADOSConn(virStorageBackendRBDStatePtr ptr, } ptr->starttime = time(0); - if ((rc = rados_connect(ptr->cluster)) < 0) { - virReportSystemError(-rc, _("failed to connect to the RADOS monitor on: %s"), + if (rados_connect(ptr->cluster) < 0) { + virReportSystemError(errno, _("failed to connect to the RADOS monitor on: %s"), mon_buff); goto cleanup; } @@ -341,7 +341,7 @@ virStorageBackendRBDOpenIoCTX(virStorageBackendRBDStatePtr ptr, virStoragePoolDefPtr def = virStoragePoolObjGetDef(pool); int rc = rados_ioctx_create(ptr->cluster, def->source.name, &ptr->ioctx); if (rc < 0) { - virReportSystemError(-rc, _("failed to create the RBD IoCTX. Does the pool '%s' exist?"), + virReportSystemError(errno, _("failed to create the RBD IoCTX. Does the pool '%s' exist?"), def->source.name); } return rc; @@ -410,7 +410,7 @@ volStorageBackendRBDGetFeatures(rbd_image_t image, int rc; if ((rc = rbd_get_features(image, features)) < 0) { - virReportSystemError(-rc, _("failed to get the features of RBD image " + virReportSystemError(errno, _("failed to get the features of RBD image " "%s"), volname); return rc; } @@ -427,7 +427,7 @@ volStorageBackendRBDGetFlags(rbd_image_t image, int rc; if ((rc = rbd_get_flags(image, flags)) < 0) { - virReportSystemError(-rc, + virReportSystemError(errno, _("failed to get the flags of RBD image %s"), volname); return rc; @@ -467,7 +467,7 @@ virStorageBackendRBDSetAllocation(virStorageVolDefPtr vol, if ((rc = rbd_diff_iterate2(image, NULL, 0, info->size, 0, 1, &virStorageBackendRBDRefreshVolInfoCb, &allocation)) < 0) { - virReportSystemError(-rc, _("failed to iterate RBD image '%s'"), + virReportSystemError(errno, _("failed to iterate RBD image '%s'"), vol->name); return rc; } @@ -520,14 +520,14 @@ volStorageBackendRBDRefreshVolInfo(virStorageVolDefPtr vol, if ((rc = rbd_open_read_only(ptr->ioctx, vol->name, &image, NULL)) < 0) { ret = rc; - virReportSystemError(-rc, _("failed to open the RBD image '%s'"), + virReportSystemError(errno, _("failed to open the RBD image '%s'"), vol->name); goto cleanup; } if ((rc = rbd_stat(image, &info, sizeof(info))) < 0) { ret = rc; - virReportSystemError(-rc, _("failed to stat the RBD image '%s'"), + virReportSystemError(errno, _("failed to stat the RBD image '%s'"), vol->name); goto cleanup; } @@ -600,7 +600,7 @@ virStorageBackendRBDGetVolNames(virStorageBackendRBDStatePtr ptr) if (rc >= 0) break; if (rc != -ERANGE) { - virReportSystemError(-rc, "%s", _("Unable to list RBD images")); + virReportSystemError(errno, "%s", _("Unable to list RBD images")); goto error; } } @@ -641,7 +641,7 @@ virStorageBackendRBDGetVolNames(virStorageBackendRBDStatePtr ptr) if (rc >= 0) break; if (rc != -ERANGE) { - virReportSystemError(-rc, "%s", _("Unable to list RBD images")); + virReportSystemError(errno, "%s", _("Unable to list RBD images")); goto error; } VIR_FREE(namebuf); @@ -687,13 +687,13 @@ virStorageBackendRBDRefreshPool(virStoragePoolObjPtr pool) if (!(ptr = virStorageBackendRBDNewState(pool))) goto cleanup; - if ((rc = rados_cluster_stat(ptr->cluster, &clusterstat)) < 0) { - virReportSystemError(-rc, "%s", _("failed to stat the RADOS cluster")); + if (rados_cluster_stat(ptr->cluster, &clusterstat) < 0) { + virReportSystemError(errno, "%s", _("failed to stat the RADOS cluster")); goto cleanup; } - if ((rc = rados_ioctx_pool_stat(ptr->ioctx, &poolstat)) < 0) { - virReportSystemError(-rc, _("failed to stat the RADOS pool '%s'"), + if (rados_ioctx_pool_stat(ptr->ioctx, &poolstat) < 0) { + virReportSystemError(errno, _("failed to stat the RADOS pool '%s'"), def->source.name); goto cleanup; } @@ -757,15 +757,15 @@ virStorageBackendRBDCleanupSnapshots(rados_ioctx_t ioctx, virStoragePoolSourcePtr source, virStorageVolDefPtr vol) { - int rc, ret = -1; + int ret = -1; int max_snaps = 128; int snap_count, protected; size_t i; rbd_image_t image = NULL; g_autofree rbd_snap_info_t *snaps = NULL; - if ((rc = rbd_open(ioctx, vol->name, &image, NULL)) < 0) { - virReportSystemError(-rc, _("failed to open the RBD image '%s'"), + if (rbd_open(ioctx, vol->name, &image, NULL) < 0) { + virReportSystemError(errno, _("failed to open the RBD image '%s'"), vol->name); goto cleanup; } @@ -784,8 +784,8 @@ virStorageBackendRBDCleanupSnapshots(rados_ioctx_t ioctx, source->name, vol->name); for (i = 0; i < snap_count; i++) { - if ((rc = rbd_snap_is_protected(image, snaps[i].name, &protected)) < 0) { - virReportSystemError(-rc, _("failed to verify if snapshot '%s/%s@%s' is protected"), + if (rbd_snap_is_protected(image, snaps[i].name, &protected) < 0) { + virReportSystemError(errno, _("failed to verify if snapshot '%s/%s@%s' is protected"), source->name, vol->name, snaps[i].name); goto cleanup; @@ -796,8 +796,8 @@ virStorageBackendRBDCleanupSnapshots(rados_ioctx_t ioctx, "unprotected", source->name, vol->name, snaps[i].name); - if ((rc = rbd_snap_unprotect(image, snaps[i].name)) < 0) { - virReportSystemError(-rc, _("failed to unprotect snapshot '%s/%s@%s'"), + if (rbd_snap_unprotect(image, snaps[i].name) < 0) { + virReportSystemError(errno, _("failed to unprotect snapshot '%s/%s@%s'"), source->name, vol->name, snaps[i].name); goto cleanup; @@ -807,8 +807,8 @@ virStorageBackendRBDCleanupSnapshots(rados_ioctx_t ioctx, VIR_DEBUG("Removing snapshot %s/%s@%s", source->name, vol->name, snaps[i].name); - if ((rc = rbd_snap_remove(image, snaps[i].name)) < 0) { - virReportSystemError(-rc, _("failed to remove snapshot '%s/%s@%s'"), + if (rbd_snap_remove(image, snaps[i].name) < 0) { + virReportSystemError(errno, _("failed to remove snapshot '%s/%s@%s'"), source->name, vol->name, snaps[i].name); goto cleanup; @@ -857,7 +857,7 @@ virStorageBackendRBDDeleteVol(virStoragePoolObjPtr pool, rc = rbd_remove(ptr->ioctx, vol->name); if (rc < 0 && (-rc) != ENOENT) { - virReportSystemError(-rc, _("failed to remove volume '%s/%s'"), + virReportSystemError(errno, _("failed to remove volume '%s/%s'"), def->source.name, vol->name); goto cleanup; } @@ -907,7 +907,7 @@ virStorageBackendRBDBuildVol(virStoragePoolObjPtr pool, { virStoragePoolDefPtr def = virStoragePoolObjGetDef(pool); virStorageBackendRBDStatePtr ptr = NULL; - int rc, ret = -1; + int ret = -1; VIR_DEBUG("Creating RBD image %s/%s with size %llu", def->source.name, vol->name, vol->target.capacity); @@ -935,9 +935,9 @@ virStorageBackendRBDBuildVol(virStoragePoolObjPtr pool, if (!(ptr = virStorageBackendRBDNewState(pool))) goto cleanup; - if ((rc = virStorageBackendRBDCreateImage(ptr->ioctx, vol->name, - vol->target.capacity)) < 0) { - virReportSystemError(-rc, _("failed to create volume '%s/%s'"), + if (virStorageBackendRBDCreateImage(ptr->ioctx, vol->name, + vol->target.capacity) < 0) { + virReportSystemError(errno, _("failed to create volume '%s/%s'"), def->source.name, vol->name); goto cleanup; } @@ -956,11 +956,10 @@ virStorageBackendRBDImageInfo(rbd_image_t image, uint64_t *stripe_unit, uint64_t *stripe_count) { - int rc = 0; uint8_t oldformat; - if ((rc = rbd_get_old_format(image, &oldformat)) < 0) { - virReportSystemError(-rc, _("failed to get the format of RBD image %s"), + if (rbd_get_old_format(image, &oldformat) < 0) { + virReportSystemError(errno, _("failed to get the format of RBD image %s"), volname); return -1; } @@ -976,14 +975,14 @@ virStorageBackendRBDImageInfo(rbd_image_t image, if (volStorageBackendRBDGetFeatures(image, volname, features) < 0) return -1; - if ((rc = rbd_get_stripe_unit(image, stripe_unit)) < 0) { - virReportSystemError(-rc, _("failed to get the stripe unit of RBD image %s"), + if (rbd_get_stripe_unit(image, stripe_unit) < 0) { + virReportSystemError(errno, _("failed to get the stripe unit of RBD image %s"), volname); return -1; } - if ((rc = rbd_get_stripe_count(image, stripe_count)) < 0) { - virReportSystemError(-rc, _("failed to get the stripe count of RBD image %s"), + if (rbd_get_stripe_count(image, stripe_count) < 0) { + virReportSystemError(errno, _("failed to get the stripe count of RBD image %s"), volname); return -1; } @@ -1015,7 +1014,7 @@ virStorageBackendRBDSnapshotFindNoDiff(rbd_image_t image, char *imgname, virBufferPtr snapname) { - int rc, ret = -1; + int ret = -1; int snap_count; int max_snaps = 128; size_t i; @@ -1023,8 +1022,8 @@ virStorageBackendRBDSnapshotFindNoDiff(rbd_image_t image, rbd_image_info_t info; g_autofree rbd_snap_info_t *snaps = NULL; - if ((rc = rbd_stat(image, &info, sizeof(info))) < 0) { - virReportSystemError(-rc, _("failed to stat the RBD image %s"), + if (rbd_stat(image, &info, sizeof(info)) < 0) { + virReportSystemError(errno, _("failed to stat the RBD image %s"), imgname); goto cleanup; } @@ -1062,15 +1061,13 @@ virStorageBackendRBDSnapshotFindNoDiff(rbd_image_t image, * is available */ #if LIBRBD_VERSION_CODE > 265 - rc = rbd_diff_iterate2(image, snaps[i].name, 0, info.size, 0, 1, - virStorageBackendRBDIterateCb, (void *)&diff); + if (rbd_diff_iterate2(image, snaps[i].name, 0, info.size, 0, 1, + virStorageBackendRBDIterateCb, (void *)&diff) < 0) { #else - rc = rbd_diff_iterate(image, snaps[i].name, 0, info.size, - virStorageBackendRBDIterateCb, (void *)&diff); + if (rbd_diff_iterate(image, snaps[i].name, 0, info.size, + virStorageBackendRBDIterateCb, (void *)&diff) < 0) { #endif - - if (rc < 0) { - virReportSystemError(-rc, _("failed to iterate RBD snapshot %s@%s"), + virReportSystemError(errno, _("failed to iterate RBD snapshot %s@%s"), imgname, snaps[i].name); goto cleanup; } @@ -1102,12 +1099,10 @@ virStorageBackendRBDSnapshotCreate(rbd_image_t image, char *imgname, char *snapname) { - int rc = -1; - VIR_DEBUG("Creating RBD snapshot %s@%s", imgname, snapname); - if ((rc = rbd_snap_create(image, snapname)) < 0) { - virReportSystemError(-rc, _("failed to create RBD snapshot %s@%s"), + if (rbd_snap_create(image, snapname) < 0) { + virReportSystemError(errno, _("failed to create RBD snapshot %s@%s"), imgname, snapname); return -1; } @@ -1120,13 +1115,12 @@ virStorageBackendRBDSnapshotProtect(rbd_image_t image, char *imgname, char *snapname) { - int rc = -1; int protected; VIR_DEBUG("Querying if RBD snapshot %s@%s is protected", imgname, snapname); - if ((rc = rbd_snap_is_protected(image, snapname, &protected)) < 0) { - virReportSystemError(-rc, _("failed to verify if RBD snapshot %s@%s " + if (rbd_snap_is_protected(image, snapname, &protected) < 0) { + virReportSystemError(errno, _("failed to verify if RBD snapshot %s@%s " "is protected"), imgname, snapname); return -1; } @@ -1135,8 +1129,8 @@ virStorageBackendRBDSnapshotProtect(rbd_image_t image, VIR_DEBUG("RBD Snapshot %s@%s is not protected, protecting", imgname, snapname); - if ((rc = rbd_snap_protect(image, snapname)) < 0) { - virReportSystemError(-rc, _("failed to protect RBD snapshot %s@%s"), + if (rbd_snap_protect(image, snapname) < 0) { + virReportSystemError(errno, _("failed to protect RBD snapshot %s@%s"), imgname, snapname); return -1; } @@ -1152,7 +1146,7 @@ virStorageBackendRBDCloneImage(rados_ioctx_t io, char *origvol, char *newvol) { - int rc, ret = -1; + int ret = -1; int order = 0; uint64_t features; uint64_t stripe_count; @@ -1161,8 +1155,8 @@ virStorageBackendRBDCloneImage(rados_ioctx_t io, rbd_image_t image = NULL; g_autofree char *snapname_buff = NULL; - if ((rc = rbd_open(io, origvol, &image, NULL)) < 0) { - virReportSystemError(-rc, _("failed to open the RBD image %s"), + if (rbd_open(io, origvol, &image, NULL) < 0) { + virReportSystemError(errno, _("failed to open the RBD image %s"), origvol); goto cleanup; } @@ -1209,14 +1203,14 @@ virStorageBackendRBDCloneImage(rados_ioctx_t io, * RBD snapshots have to be 'protected' before they can be used * as a parent snapshot for a child image */ - if ((rc = virStorageBackendRBDSnapshotProtect(image, origvol, snapname_buff)) < 0) + if (virStorageBackendRBDSnapshotProtect(image, origvol, snapname_buff) < 0) goto cleanup; VIR_DEBUG("Performing RBD clone from %s to %s", origvol, newvol); - if ((rc = rbd_clone2(io, origvol, snapname_buff, io, newvol, features, - &order, stripe_unit, stripe_count)) < 0) { - virReportSystemError(-rc, _("failed to clone RBD volume %s to %s"), + if (rbd_clone2(io, origvol, snapname_buff, io, newvol, features, + &order, stripe_unit, stripe_count) < 0) { + virReportSystemError(errno, _("failed to clone RBD volume %s to %s"), origvol, newvol); goto cleanup; } @@ -1291,21 +1285,21 @@ virStorageBackendRBDResizeVol(virStoragePoolObjPtr pool, { virStorageBackendRBDStatePtr ptr = NULL; rbd_image_t image = NULL; - int rc, ret = -1; + int ret = -1; virCheckFlags(0, -1); if (!(ptr = virStorageBackendRBDNewState(pool))) goto cleanup; - if ((rc = rbd_open(ptr->ioctx, vol->name, &image, NULL)) < 0) { - virReportSystemError(-rc, _("failed to open the RBD image '%s'"), + if (rbd_open(ptr->ioctx, vol->name, &image, NULL) < 0) { + virReportSystemError(errno, _("failed to open the RBD image '%s'"), vol->name); goto cleanup; } - if ((rc = rbd_resize(image, capacity)) < 0) { - virReportSystemError(-rc, _("failed to resize the RBD image '%s'"), + if (rbd_resize(image, capacity) < 0) { + virReportSystemError(errno, _("failed to resize the RBD image '%s'"), vol->name); goto cleanup; } @@ -1325,7 +1319,6 @@ virStorageBackendRBDVolWipeZero(rbd_image_t image, rbd_image_info_t *info, uint64_t stripe_count) { - int rc; unsigned long long offset = 0; unsigned long long length; g_autofree char *writebuf = NULL; @@ -1336,8 +1329,8 @@ virStorageBackendRBDVolWipeZero(rbd_image_t image, while (offset < info->size) { length = MIN((info->size - offset), (info->obj_size * stripe_count)); - if ((rc = rbd_write(image, offset, length, writebuf)) < 0) { - virReportSystemError(-rc, _("writing %llu bytes failed on " + if (rbd_write(image, offset, length, writebuf) < 0) { + virReportSystemError(errno, _("writing %llu bytes failed on " "RBD image %s at offset %llu"), length, imgname, offset); return -1; @@ -1358,7 +1351,6 @@ virStorageBackendRBDVolWipeDiscard(rbd_image_t image, rbd_image_info_t *info, uint64_t stripe_count) { - int rc = -1; unsigned long long offset = 0; unsigned long long length; @@ -1367,8 +1359,8 @@ virStorageBackendRBDVolWipeDiscard(rbd_image_t image, while (offset < info->size) { length = MIN((info->size - offset), (info->obj_size * stripe_count)); - if ((rc = rbd_discard(image, offset, length)) < 0) { - virReportSystemError(-rc, _("discarding %llu bytes failed on " + if (rbd_discard(image, offset, length) < 0) { + virReportSystemError(errno, _("discarding %llu bytes failed on " "RBD image %s at offset %llu"), length, imgname, offset); return -1; @@ -1394,7 +1386,8 @@ virStorageBackendRBDVolWipe(virStoragePoolObjPtr pool, rbd_image_t image = NULL; rbd_image_info_t info; uint64_t stripe_count; - int rc, ret = -1; + int rc = 0; + int ret = -1; virCheckFlags(0, -1); @@ -1407,20 +1400,20 @@ virStorageBackendRBDVolWipe(virStoragePoolObjPtr pool, if (!ptr) goto cleanup; - if ((rc = rbd_open(ptr->ioctx, vol->name, &image, NULL)) < 0) { - virReportSystemError(-rc, _("failed to open the RBD image %s"), + if (rbd_open(ptr->ioctx, vol->name, &image, NULL) < 0) { + virReportSystemError(errno, _("failed to open the RBD image %s"), vol->name); goto cleanup; } - if ((rc = rbd_stat(image, &info, sizeof(info))) < 0) { - virReportSystemError(-rc, _("failed to stat the RBD image %s"), + if (rbd_stat(image, &info, sizeof(info)) < 0) { + virReportSystemError(errno, _("failed to stat the RBD image %s"), vol->name); goto cleanup; } - if ((rc = rbd_get_stripe_count(image, &stripe_count)) < 0) { - virReportSystemError(-rc, _("failed to get stripe count of RBD image %s"), + if (rbd_get_stripe_count(image, &stripe_count) < 0) { + virReportSystemError(errno, _("failed to get stripe count of RBD image %s"), vol->name); goto cleanup; } @@ -1452,7 +1445,7 @@ virStorageBackendRBDVolWipe(virStoragePoolObjPtr pool, } if (rc < 0) { - virReportSystemError(-rc, _("failed to wipe RBD image %s"), + virReportSystemError(errno, _("failed to wipe RBD image %s"), vol->name); goto cleanup; } -- 2.7.5