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dkim=none (message not signed) header.d=none;nongnu.org; dmarc=none action=none header.from=virtuozzo.com; From: Vladimir Sementsov-Ogievskiy To: qemu-block@nongnu.org Cc: qemu-devel@nongnu.org, armbru@redhat.com, berto@igalia.com, vsementsov@virtuozzo.com, eblake@redhat.com, jsnow@redhat.com, stefanha@redhat.com, pbonzini@redhat.com, pavel.dovgaluk@ispras.ru, ari@tuxera.com, mreitz@redhat.com, kwolf@redhat.com, groug@kaod.org Subject: [PATCH v2 08/13] block/qcow2: qcow2_get_specific_info(): drop error propagation Date: Thu, 17 Sep 2020 22:55:14 +0300 Message-Id: <20200917195519.19589-9-vsementsov@virtuozzo.com> X-Mailer: git-send-email 2.21.3 In-Reply-To: <20200917195519.19589-1-vsementsov@virtuozzo.com> References: <20200917195519.19589-1-vsementsov@virtuozzo.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: AM4PR05CA0011.eurprd05.prod.outlook.com (2603:10a6:205::24) To AM7PR08MB5494.eurprd08.prod.outlook.com (2603:10a6:20b:dc::15) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-Mailer: git-send-email 2.21.3 X-Originating-IP: [185.215.60.75] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 365ec200-8e7b-4c59-aa01-08d85b43a8ff X-MS-TrafficTypeDiagnostic: AM6PR08MB3032: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:256; 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charset="utf-8" Don't use error propagation in qcow2_get_specific_info(). For this refactor qcow2_get_bitmap_info_list, its current interface is rather weird. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Greg Kurz Reviewed-by: Alberto Garcia --- block/qcow2.h | 4 ++-- block/qcow2-bitmap.c | 27 +++++++++++++-------------- block/qcow2.c | 10 +++------- 3 files changed, 18 insertions(+), 23 deletions(-) diff --git a/block/qcow2.h b/block/qcow2.h index b71e444fca..6eac088f1c 100644 --- a/block/qcow2.h +++ b/block/qcow2.h @@ -973,8 +973,8 @@ int qcow2_check_bitmaps_refcounts(BlockDriverState *bs,= BdrvCheckResult *res, void **refcount_table, int64_t *refcount_table_size); bool qcow2_load_dirty_bitmaps(BlockDriverState *bs, Error **errp); -Qcow2BitmapInfoList *qcow2_get_bitmap_info_list(BlockDriverState *bs, - Error **errp); +bool qcow2_get_bitmap_info_list(BlockDriverState *bs, + Qcow2BitmapInfoList **info_list, Error **e= rrp); int qcow2_reopen_bitmaps_rw(BlockDriverState *bs, Error **errp); int qcow2_truncate_bitmaps_check(BlockDriverState *bs, Error **errp); void qcow2_store_persistent_dirty_bitmaps(BlockDriverState *bs, diff --git a/block/qcow2-bitmap.c b/block/qcow2-bitmap.c index d7a31a8ddc..4f6138f544 100644 --- a/block/qcow2-bitmap.c +++ b/block/qcow2-bitmap.c @@ -1093,30 +1093,29 @@ static Qcow2BitmapInfoFlagsList *get_bitmap_info_fl= ags(uint32_t flags) /* * qcow2_get_bitmap_info_list() * Returns a list of QCOW2 bitmap details. - * In case of no bitmaps, the function returns NULL and - * the @errp parameter is not set. - * When bitmap information can not be obtained, the function returns - * NULL and the @errp parameter is set. + * On success return true with bm_list set (probably to NULL, if no bitmap= s), + * on failure return false with errp set. */ -Qcow2BitmapInfoList *qcow2_get_bitmap_info_list(BlockDriverState *bs, - Error **errp) +bool qcow2_get_bitmap_info_list(BlockDriverState *bs, + Qcow2BitmapInfoList **info_list, Error **e= rrp) { BDRVQcow2State *s =3D bs->opaque; Qcow2BitmapList *bm_list; Qcow2Bitmap *bm; - Qcow2BitmapInfoList *list =3D NULL; - Qcow2BitmapInfoList **plist =3D &list; =20 if (s->nb_bitmaps =3D=3D 0) { - return NULL; + *info_list =3D NULL; + return true; } =20 bm_list =3D bitmap_list_load(bs, s->bitmap_directory_offset, s->bitmap_directory_size, errp); - if (bm_list =3D=3D NULL) { - return NULL; + if (!bm_list) { + return false; } =20 + *info_list =3D NULL; + QSIMPLEQ_FOREACH(bm, bm_list, entry) { Qcow2BitmapInfo *info =3D g_new0(Qcow2BitmapInfo, 1); Qcow2BitmapInfoList *obj =3D g_new0(Qcow2BitmapInfoList, 1); @@ -1124,13 +1123,13 @@ Qcow2BitmapInfoList *qcow2_get_bitmap_info_list(Blo= ckDriverState *bs, info->name =3D g_strdup(bm->name); info->flags =3D get_bitmap_info_flags(bm->flags & ~BME_RESERVED_FL= AGS); obj->value =3D info; - *plist =3D obj; - plist =3D &obj->next; + *info_list =3D obj; + info_list =3D &obj->next; } =20 bitmap_list_free(bm_list); =20 - return list; + return true; } =20 int qcow2_reopen_bitmaps_rw(BlockDriverState *bs, Error **errp) diff --git a/block/qcow2.c b/block/qcow2.c index 41a29072e6..8c89c98978 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -5038,12 +5038,10 @@ static ImageInfoSpecific *qcow2_get_specific_info(B= lockDriverState *bs, BDRVQcow2State *s =3D bs->opaque; ImageInfoSpecific *spec_info; QCryptoBlockInfo *encrypt_info =3D NULL; - Error *local_err =3D NULL; =20 if (s->crypto !=3D NULL) { - encrypt_info =3D qcrypto_block_get_info(s->crypto, &local_err); - if (local_err) { - error_propagate(errp, local_err); + encrypt_info =3D qcrypto_block_get_info(s->crypto, errp); + if (!encrypt_info) { return NULL; } } @@ -5060,9 +5058,7 @@ static ImageInfoSpecific *qcow2_get_specific_info(Blo= ckDriverState *bs, }; } else if (s->qcow_version =3D=3D 3) { Qcow2BitmapInfoList *bitmaps; - bitmaps =3D qcow2_get_bitmap_info_list(bs, &local_err); - if (local_err) { - error_propagate(errp, local_err); + if (!qcow2_get_bitmap_info_list(bs, &bitmaps, errp)) { qapi_free_ImageInfoSpecific(spec_info); qapi_free_QCryptoBlockInfo(encrypt_info); return NULL; --=20 2.21.3