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vhdx: Use BB functions in .bdrv_create() 

All users of the block layers are supposed to go through a BlockBackend.
The .bdrv_create() implementation is one such user, so this patch
converts it.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2016-03-08 15:57:05 +01:00
parent a08f0c3b5f
commit 10bf03af12
1 changed files with 16 additions and 13 deletions
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29
block/vhdx.c
View File

@ -18,6 +18,7 @@
#include "qemu/osdep.h"
#include "qemu-common.h"
#include "block/block_int.h"
#include "sysemu/block-backend.h"
#include "qemu/module.h"
#include "qemu/crc32c.h"
#include "block/vhdx.h"
@ -1772,7 +1773,7 @@ static int vhdx_create(const char *filename, QemuOpts *opts, Error **errp)
gunichar2 *creator = NULL;
glong creator_items;
BlockDriverState *bs;
BlockBackend *blk;
char *type = NULL;
VHDXImageType image_type;
Error *local_err = NULL;
@ -1837,15 +1838,17 @@ static int vhdx_create(const char *filename, QemuOpts *opts, Error **errp)
goto exit;
}
bs = NULL;
ret = bdrv_open(&bs, filename, NULL, NULL,
BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_PROTOCOL,
&local_err);
if (ret < 0) {
blk = blk_new_open("image", filename, NULL, NULL,
BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_PROTOCOL,
&local_err);
if (blk == NULL) {
error_propagate(errp, local_err);
ret = -EIO;
goto exit;
}
blk_set_allow_write_beyond_eof(blk, true);
/* Create (A) */
/* The creator field is optional, but may be useful for
@ -1853,13 +1856,13 @@ static int vhdx_create(const char *filename, QemuOpts *opts, Error **errp)
creator = g_utf8_to_utf16("QEMU v" QEMU_VERSION, -1, NULL,
&creator_items, NULL);
signature = cpu_to_le64(VHDX_FILE_SIGNATURE);
ret = bdrv_pwrite(bs, VHDX_FILE_ID_OFFSET, &signature, sizeof(signature));
ret = blk_pwrite(blk, VHDX_FILE_ID_OFFSET, &signature, sizeof(signature));
if (ret < 0) {
goto delete_and_exit;
}
if (creator) {
ret = bdrv_pwrite(bs, VHDX_FILE_ID_OFFSET + sizeof(signature),
creator, creator_items * sizeof(gunichar2));
ret = blk_pwrite(blk, VHDX_FILE_ID_OFFSET + sizeof(signature),
creator, creator_items * sizeof(gunichar2));
if (ret < 0) {
goto delete_and_exit;
}
@ -1867,13 +1870,13 @@ static int vhdx_create(const char *filename, QemuOpts *opts, Error **errp)
/* Creates (B),(C) */
ret = vhdx_create_new_headers(bs, image_size, log_size);
ret = vhdx_create_new_headers(blk_bs(blk), image_size, log_size);
if (ret < 0) {
goto delete_and_exit;
}
/* Creates (D),(E),(G) explicitly. (F) created as by-product */
ret = vhdx_create_new_region_table(bs, image_size, block_size, 512,
ret = vhdx_create_new_region_table(blk_bs(blk), image_size, block_size, 512,
log_size, use_zero_blocks, image_type,
&metadata_offset);
if (ret < 0) {
@ -1881,7 +1884,7 @@ static int vhdx_create(const char *filename, QemuOpts *opts, Error **errp)
}
/* Creates (H) */
ret = vhdx_create_new_metadata(bs, image_size, block_size, 512,
ret = vhdx_create_new_metadata(blk_bs(blk), image_size, block_size, 512,
metadata_offset, image_type);
if (ret < 0) {
goto delete_and_exit;
@ -1889,7 +1892,7 @@ static int vhdx_create(const char *filename, QemuOpts *opts, Error **errp)
delete_and_exit:
bdrv_unref(bs);
blk_unref(blk);
exit:
g_free(type);
g_free(creator);