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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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37
block/raw-posix.c
View file

@ -823,13 +823,18 @@ again:
}
#endif
static int raw_create(const char *filename, int64_t total_size,
const char *backing_file, int flags)
static int raw_create(const char *filename, QEMUOptionParameter *options)
{
int fd;
int64_t total_size = 0;
if (flags || backing_file)
return -ENOTSUP;
/* Read out options */
while (options && options->name) {
if (!strcmp(options->name, BLOCK_OPT_SIZE)) {
total_size = options->value.n / 512;
}
options++;
}
fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY,
0644);
@ -846,6 +851,12 @@ static void raw_flush(BlockDriverState *bs)
fsync(s->fd);
}
static QEMUOptionParameter raw_create_options[] = {
{ BLOCK_OPT_SIZE, OPT_SIZE },
{ NULL }
};
static BlockDriver bdrv_raw = {
.format_name = "raw",
.instance_size = sizeof(BDRVRawState),
@ -866,6 +877,8 @@ static BlockDriver bdrv_raw = {
.bdrv_truncate = raw_truncate,
.bdrv_getlength = raw_getlength,
.create_options = raw_create_options,
};
/***********************************************/
@ -1364,15 +1377,20 @@ static BlockDriverAIOCB *raw_aio_ioctl(BlockDriverState *bs,
#endif /* !linux && !FreeBSD */
#if defined(__linux__) || defined(__FreeBSD__)
static int hdev_create(const char *filename, int64_t total_size,
const char *backing_file, int flags)
static int hdev_create(const char *filename, QEMUOptionParameter *options)
{
int fd;
int ret = 0;
struct stat stat_buf;
int64_t total_size = 0;
if (flags || backing_file)
return -ENOTSUP;
/* Read out options */
while (options && options->name) {
if (!strcmp(options->name, "size")) {
total_size = options->value.n / 512;
}
options++;
}
fd = open(filename, O_WRONLY | O_BINARY);
if (fd < 0)
@ -1391,8 +1409,7 @@ static int hdev_create(const char *filename, int64_t total_size,
#else /* !(linux || freebsd) */
static int hdev_create(const char *filename, int64_t total_size,
const char *backing_file, int flags)
static int hdev_create(const char *filename, QEMUOptionParameter *options)
{
return -ENOTSUP;
}