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Convert all block drivers to new bdrv_create

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Now we can make use of the newly introduced option structures. Instead of
having bdrv_create carry more and more parameters (which are format specific in
most cases), just pass a option structure as defined by the driver itself.

bdrv_create2() contains an emulation of the old interface to simplify the
transition.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Kevin Wolf 2009-05-18 16:42:10 +02:00 • committed by Anthony Liguori
parent d3f243676a
commit 0e7e1989f7
12 changed files with 212 additions and 53 deletions
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21
block/vpc.c
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@ -477,8 +477,7 @@ static int calculate_geometry(int64_t total_sectors, uint16_t* cyls,
return 0;
}
static int vpc_create(const char *filename, int64_t total_sectors,
const char *backing_file, int flags)
static int vpc_create(const char *filename, QEMUOptionParameter *options)
{
uint8_t buf[1024];
struct vhd_footer* footer = (struct vhd_footer*) buf;
@ -489,10 +488,17 @@ static int vpc_create(const char *filename, int64_t total_sectors,
uint8_t heads;
uint8_t secs_per_cyl;
size_t block_size, num_bat_entries;
int64_t total_sectors = 0;
if (backing_file != NULL)
return -ENOTSUP;
// Read out options
while (options && options->name) {
if (!strcmp(options->name, "size")) {
total_sectors = options->value.n / 512;
}
options++;
}
// Create the file
fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0644);
if (fd < 0)
return -EIO;
@ -587,6 +593,11 @@ static void vpc_close(BlockDriverState *bs)
bdrv_delete(s->hd);
}
static QEMUOptionParameter vpc_create_options[] = {
{ "size", OPT_SIZE },
{ NULL }
};
static BlockDriver bdrv_vpc = {
.format_name = "vpc",
.instance_size = sizeof(BDRVVPCState),
@ -596,6 +607,8 @@ static BlockDriver bdrv_vpc = {
.bdrv_write = vpc_write,
.bdrv_close = vpc_close,
.bdrv_create = vpc_create,
.create_options = vpc_create_options,
};
static void bdrv_vpc_init(void)