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[PATCH v3 02/11] block/export: add blk_by_export_id()
From: |
Vladimir Sementsov-Ogievskiy |
Subject: |
[PATCH v3 02/11] block/export: add blk_by_export_id() |
Date: |
Sat, 26 Feb 2022 00:42:59 +0100 |
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
include/sysemu/block-backend.h | 1 +
block/export/export.c | 18 ++++++++++++++++++
2 files changed, 19 insertions(+)
diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h
index 904d70f49c..250c7465a5 100644
--- a/include/sysemu/block-backend.h
+++ b/include/sysemu/block-backend.h
@@ -124,6 +124,7 @@ DeviceState *blk_get_attached_dev(BlockBackend *blk);
char *blk_get_attached_dev_id(BlockBackend *blk);
BlockBackend *blk_by_dev(void *dev);
BlockBackend *blk_by_qdev_id(const char *id, Error **errp);
+BlockBackend *blk_by_export_id(const char *id, Error **errp);
void blk_set_dev_ops(BlockBackend *blk, const BlockDevOps *ops, void *opaque);
int coroutine_fn blk_co_preadv(BlockBackend *blk, int64_t offset,
int64_t bytes, QEMUIOVector *qiov,
diff --git a/block/export/export.c b/block/export/export.c
index 6d3b9964c8..613b5bc1d5 100644
--- a/block/export/export.c
+++ b/block/export/export.c
@@ -362,3 +362,21 @@ BlockExportInfoList *qmp_query_block_exports(Error **errp)
return head;
}
+
+BlockBackend *blk_by_export_id(const char *id, Error **errp)
+{
+ BlockExport *exp;
+
+ exp = blk_exp_find(id);
+ if (exp == NULL) {
+ error_setg(errp, "Export '%s' not found", id);
+ return NULL;
+ }
+
+ if (!exp->blk) {
+ error_setg(errp, "Export '%s' is empty", id);
+ return NULL;
+ }
+
+ return exp->blk;
+}
--
2.31.1
- [PATCH v3 00/11] blockdev-replace, Vladimir Sementsov-Ogievskiy, 2022/02/25
- [PATCH v3 01/11] block-backend: blk_root(): drop const specifier on return type, Vladimir Sementsov-Ogievskiy, 2022/02/25
- [PATCH v3 02/11] block/export: add blk_by_export_id(),
Vladimir Sementsov-Ogievskiy <=
- [PATCH v3 03/11] block: make bdrv_find_child() function public, Vladimir Sementsov-Ogievskiy, 2022/02/25
- [PATCH v3 04/11] block: bdrv_replace_child_bs(): move to external transaction, Vladimir Sementsov-Ogievskiy, 2022/02/25
- [PATCH v3 06/11] qapi: add x-blockdev-replace transaction action, Vladimir Sementsov-Ogievskiy, 2022/02/25
- [PATCH v3 05/11] qapi: add x-blockdev-replace command, Vladimir Sementsov-Ogievskiy, 2022/02/25
- [PATCH v3 07/11] block: bdrv_get_xdbg_block_graph(): report export ids, Vladimir Sementsov-Ogievskiy, 2022/02/25
- [PATCH v3 08/11] iotests.py: qemu_img_create: use imgfmt by default, Vladimir Sementsov-Ogievskiy, 2022/02/25
- [PATCH v3 09/11] iotests.py: introduce VM.assert_edges_list() method, Vladimir Sementsov-Ogievskiy, 2022/02/25
- [PATCH v3 10/11] iotests.py: add VM.qmp_check() helper, Vladimir Sementsov-Ogievskiy, 2022/02/25
- [PATCH v3 11/11] iotests: add filter-insertion, Vladimir Sementsov-Ogievskiy, 2022/02/25
- Re: [PATCH v3 00/11] blockdev-replace, Vladimir Sementsov-Ogievskiy, 2022/02/25