From d48c917f7bcc56fce488c129884abee39dbf0df4 Mon Sep 17 00:00:00 2001 From: John Snow Date: Wed, 20 Mar 2019 21:48:36 +0100 Subject: [PATCH 043/163] bdrv_query_image_info Error parameter added RH-Author: John Snow Message-id: <20190320214838.22027-9-jsnow@redhat.com> Patchwork-id: 85002 O-Subject: [RHEL-7.7 qemu-kvm-rhev PATCH 08/10] bdrv_query_image_info Error parameter added Bugzilla: 1691048 RH-Acked-by: Stefan Hajnoczi RH-Acked-by: Max Reitz RH-Acked-by: Miroslav Rezanina From: Andrey Shinkevich Inform a user in case qcow2_get_specific_info fails to obtain QCOW2 image specific information. This patch is preliminary to the one "qcow2: Add list of bitmaps to ImageInfoSpecificQCow2". Signed-off-by: Andrey Shinkevich Reviewed-by: Eric Blake Reviewed-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Kevin Wolf Message-Id: <1549638368-530182-2-git-send-email-andrey.shinkevich@virtuozzo.com> Signed-off-by: Eric Blake (cherry picked from commit 1bf6e9ca9234e1dbcaa18baa06eca9d55cc2dbbb) Signed-off-by: John Snow Signed-off-by: Miroslav Rezanina --- block.c | 5 +++-- block/crypto.c | 9 +++------ block/qapi.c | 7 ++++++- block/qcow2.c | 10 ++++++++-- block/vmdk.c | 3 ++- include/block/block.h | 3 ++- include/block/block_int.h | 3 ++- qemu-io-cmds.c | 7 ++++++- 8 files changed, 32 insertions(+), 15 deletions(-) diff --git a/block.c b/block.c index bcf277d..e3e0e34 100644 --- a/block.c +++ b/block.c @@ -4204,11 +4204,12 @@ int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) return drv->bdrv_get_info(bs, bdi); } -ImageInfoSpecific *bdrv_get_specific_info(BlockDriverState *bs) +ImageInfoSpecific *bdrv_get_specific_info(BlockDriverState *bs, + Error **errp) { BlockDriver *drv = bs->drv; if (drv && drv->bdrv_get_specific_info) { - return drv->bdrv_get_specific_info(bs); + return drv->bdrv_get_specific_info(bs, errp); } return NULL; } diff --git a/block/crypto.c b/block/crypto.c index 0bb0db6..fd88782 100644 --- a/block/crypto.c +++ b/block/crypto.c @@ -664,20 +664,17 @@ static int block_crypto_get_info_luks(BlockDriverState *bs, } static ImageInfoSpecific * -block_crypto_get_specific_info_luks(BlockDriverState *bs) +block_crypto_get_specific_info_luks(BlockDriverState *bs, Error **errp) { BlockCrypto *crypto = bs->opaque; ImageInfoSpecific *spec_info; QCryptoBlockInfo *info; - info = qcrypto_block_get_info(crypto->block, NULL); + info = qcrypto_block_get_info(crypto->block, errp); if (!info) { return NULL; } - if (info->format != Q_CRYPTO_BLOCK_FORMAT_LUKS) { - qapi_free_QCryptoBlockInfo(info); - return NULL; - } + assert(info->format == Q_CRYPTO_BLOCK_FORMAT_LUKS); spec_info = g_new(ImageInfoSpecific, 1); spec_info->type = IMAGE_INFO_SPECIFIC_KIND_LUKS; diff --git a/block/qapi.c b/block/qapi.c index 339727f..42ce4a3 100644 --- a/block/qapi.c +++ b/block/qapi.c @@ -282,7 +282,12 @@ void bdrv_query_image_info(BlockDriverState *bs, info->dirty_flag = bdi.is_dirty; info->has_dirty_flag = true; } - info->format_specific = bdrv_get_specific_info(bs); + info->format_specific = bdrv_get_specific_info(bs, &err); + if (err) { + error_propagate(errp, err); + qapi_free_ImageInfo(info); + goto out; + } info->has_format_specific = info->format_specific != NULL; backing_filename = bs->backing_file; diff --git a/block/qcow2.c b/block/qcow2.c index 114dcdd..de9872f 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -4166,14 +4166,20 @@ static int qcow2_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) return 0; } -static ImageInfoSpecific *qcow2_get_specific_info(BlockDriverState *bs) +static ImageInfoSpecific *qcow2_get_specific_info(BlockDriverState *bs, + Error **errp) { BDRVQcow2State *s = bs->opaque; ImageInfoSpecific *spec_info; QCryptoBlockInfo *encrypt_info = NULL; + Error *local_err = NULL; if (s->crypto != NULL) { - encrypt_info = qcrypto_block_get_info(s->crypto, &error_abort); + encrypt_info = qcrypto_block_get_info(s->crypto, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return NULL; + } } spec_info = g_new(ImageInfoSpecific, 1); diff --git a/block/vmdk.c b/block/vmdk.c index 84f8bbe..f52f291 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -2287,7 +2287,8 @@ static int coroutine_fn vmdk_co_check(BlockDriverState *bs, return ret; } -static ImageInfoSpecific *vmdk_get_specific_info(BlockDriverState *bs) +static ImageInfoSpecific *vmdk_get_specific_info(BlockDriverState *bs, + Error **errp) { int i; BDRVVmdkState *s = bs->opaque; diff --git a/include/block/block.h b/include/block/block.h index 36a702c..5f40140 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -472,7 +472,8 @@ const char *bdrv_get_device_name(const BlockDriverState *bs); const char *bdrv_get_device_or_node_name(const BlockDriverState *bs); int bdrv_get_flags(BlockDriverState *bs); int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi); -ImageInfoSpecific *bdrv_get_specific_info(BlockDriverState *bs); +ImageInfoSpecific *bdrv_get_specific_info(BlockDriverState *bs, + Error **errp); void bdrv_round_to_clusters(BlockDriverState *bs, int64_t offset, int64_t bytes, int64_t *cluster_offset, diff --git a/include/block/block_int.h b/include/block/block_int.h index f457acb..f241bd9 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -321,7 +321,8 @@ struct BlockDriver { const char *name, Error **errp); int (*bdrv_get_info)(BlockDriverState *bs, BlockDriverInfo *bdi); - ImageInfoSpecific *(*bdrv_get_specific_info)(BlockDriverState *bs); + ImageInfoSpecific *(*bdrv_get_specific_info)(BlockDriverState *bs, + Error **errp); int coroutine_fn (*bdrv_save_vmstate)(BlockDriverState *bs, QEMUIOVector *qiov, diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c index 5bf5f28..9c51e57 100644 --- a/qemu-io-cmds.c +++ b/qemu-io-cmds.c @@ -1660,6 +1660,7 @@ static int info_f(BlockBackend *blk, int argc, char **argv) BlockDriverState *bs = blk_bs(blk); BlockDriverInfo bdi; ImageInfoSpecific *spec_info; + Error *local_err = NULL; char s1[64], s2[64]; int ret; @@ -1681,7 +1682,11 @@ static int info_f(BlockBackend *blk, int argc, char **argv) printf("cluster size: %s\n", s1); printf("vm state offset: %s\n", s2); - spec_info = bdrv_get_specific_info(bs); + spec_info = bdrv_get_specific_info(bs, &local_err); + if (local_err) { + error_report_err(local_err); + return -EIO; + } if (spec_info) { printf("Format specific information:\n"); bdrv_image_info_specific_dump(fprintf, stdout, spec_info); -- 1.8.3.1