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block: Change BDS parameter of bdrv_open() to **

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Make bdrv_open() take a pointer to a BDS pointer, similarly to
bdrv_file_open(). If a pointer to a NULL pointer is given, bdrv_open()
will create a new BDS with an empty name; if the BDS pointer is not
NULL, that existing BDS will be reused (in the same way as bdrv_open()
already did).

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Max Reitz 2014-02-18 18:33:05 +01:00 • committed by Kevin Wolf
parent e6dc8a1f83
commit f67503e5bd
12 changed files with 73 additions and 57 deletions
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5
block/vmdk.c
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@ -1755,10 +1755,9 @@ static int vmdk_create(const char *filename, QEMUOptionParameter *options,
goto exit;
}
if (backing_file) {
BlockDriverState *bs = bdrv_new("");
ret = bdrv_open(bs, backing_file, NULL, BDRV_O_NO_BACKING, NULL, errp);
BlockDriverState *bs = NULL;
ret = bdrv_open(&bs, backing_file, NULL, BDRV_O_NO_BACKING, NULL, errp);
if (ret != 0) {
bdrv_unref(bs);
goto exit;
}
if (strcmp(bs->drv->format_name, "vmdk")) {