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[Qemu-devel] [PATCH v2 07/12] block/json: Add bdrv_co_get_block_status()
From: |
Max Reitz |
Subject: |
[Qemu-devel] [PATCH v2 07/12] block/json: Add bdrv_co_get_block_status() |
Date: |
Fri, 7 Mar 2014 23:55:51 +0100 |
Implement this function in the same way as raw_bsd does: Acknowledge
that this is a passthrough driver (always return BDRV_BLOCK_OFFSET_VALID
and BDRV_BLOCK_DATA and derive the offset directly from the sector
index) and add BDRV_BLOCK_RAW to the returned value.
Signed-off-by: Max Reitz <address@hidden>
---
block/json.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/block/json.c b/block/json.c
index e4cdb68..966a5f5 100644
--- a/block/json.c
+++ b/block/json.c
@@ -110,6 +110,15 @@ static coroutine_fn int
json_co_write_zeroes(BlockDriverState *bs,
return bdrv_co_write_zeroes(bs->file, sector_num, nb_sectors, flags);
}
+static coroutine_fn int64_t json_co_get_block_status(BlockDriverState *bs,
+ int64_t sector_num,
+ int nb_sectors, int *pnum)
+{
+ *pnum = nb_sectors;
+ return BDRV_BLOCK_RAW | BDRV_BLOCK_OFFSET_VALID | BDRV_BLOCK_DATA |
+ (sector_num << BDRV_SECTOR_BITS);
+}
+
static void json_invalidate_cache(BlockDriverState *bs)
{
return bdrv_invalidate_cache(bs->file);
@@ -156,6 +165,7 @@ static BlockDriver bdrv_json = {
.bdrv_aio_discard = json_aio_discard,
.bdrv_co_write_zeroes = json_co_write_zeroes,
+ .bdrv_co_get_block_status = json_co_get_block_status,
.bdrv_invalidate_cache = json_invalidate_cache,
--
1.9.0
- [Qemu-devel] [PATCH v2 02/12] check-qdict: Add test for qdict_join(), (continued)
- [Qemu-devel] [PATCH v2 02/12] check-qdict: Add test for qdict_join(), Max Reitz, 2014/03/07
- [Qemu-devel] [PATCH v2 03/12] block: Add "has_single_child" field for drivers, Max Reitz, 2014/03/07
- [Qemu-devel] [PATCH v2 04/12] block/json: Add JSON protocol driver, Max Reitz, 2014/03/07
- [Qemu-devel] [PATCH v2 05/12] block/json: Add functions for cache control, Max Reitz, 2014/03/07
- [Qemu-devel] [PATCH v2 06/12] block/json: Add functions for writing zeroes etc., Max Reitz, 2014/03/07
- [Qemu-devel] [PATCH v2 07/12] block/json: Add bdrv_co_get_block_status(),
Max Reitz <=
- [Qemu-devel] [PATCH v2 08/12] block/json: Add ioctl etc., Max Reitz, 2014/03/07
- [Qemu-devel] [PATCH v2 09/12] block/json: Add bdrv_get_specific_info(), Max Reitz, 2014/03/07
- [Qemu-devel] [PATCH v2 10/12] block/raw_bsd: Add bdrv_get_specific_info(), Max Reitz, 2014/03/07
- [Qemu-devel] [PATCH v2 11/12] block/qapi: Ignore filters on top for format name, Max Reitz, 2014/03/07
- [Qemu-devel] [PATCH v2 12/12] iotests: Add test for the JSON protocol, Max Reitz, 2014/03/07
- Re: [Qemu-devel] [PATCH v2 00/12] block/json: Add JSON protocol driver, Max Reitz, 2014/03/21