mirror of https://gitee.com/openkylin/qemu.git
145 lines
3.5 KiB
C
145 lines
3.5 KiB
C
|
|
#include "qemu-common.h"
|
|
#include "block_int.h"
|
|
#include "module.h"
|
|
|
|
static int raw_open(BlockDriverState *bs, int flags)
|
|
{
|
|
bs->sg = bs->file->sg;
|
|
return 0;
|
|
}
|
|
|
|
static int raw_read(BlockDriverState *bs, int64_t sector_num,
|
|
uint8_t *buf, int nb_sectors)
|
|
{
|
|
return bdrv_read(bs->file, sector_num, buf, nb_sectors);
|
|
}
|
|
|
|
static int raw_write(BlockDriverState *bs, int64_t sector_num,
|
|
const uint8_t *buf, int nb_sectors)
|
|
{
|
|
return bdrv_write(bs->file, sector_num, buf, nb_sectors);
|
|
}
|
|
|
|
static BlockDriverAIOCB *raw_aio_readv(BlockDriverState *bs,
|
|
int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
|
|
BlockDriverCompletionFunc *cb, void *opaque)
|
|
{
|
|
return bdrv_aio_readv(bs->file, sector_num, qiov, nb_sectors, cb, opaque);
|
|
}
|
|
|
|
static BlockDriverAIOCB *raw_aio_writev(BlockDriverState *bs,
|
|
int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
|
|
BlockDriverCompletionFunc *cb, void *opaque)
|
|
{
|
|
return bdrv_aio_writev(bs->file, sector_num, qiov, nb_sectors, cb, opaque);
|
|
}
|
|
|
|
static void raw_close(BlockDriverState *bs)
|
|
{
|
|
}
|
|
|
|
static void raw_flush(BlockDriverState *bs)
|
|
{
|
|
bdrv_flush(bs->file);
|
|
}
|
|
|
|
static BlockDriverAIOCB *raw_aio_flush(BlockDriverState *bs,
|
|
BlockDriverCompletionFunc *cb, void *opaque)
|
|
{
|
|
return bdrv_aio_flush(bs->file, cb, opaque);
|
|
}
|
|
|
|
static int64_t raw_getlength(BlockDriverState *bs)
|
|
{
|
|
return bdrv_getlength(bs->file);
|
|
}
|
|
|
|
static int raw_truncate(BlockDriverState *bs, int64_t offset)
|
|
{
|
|
return bdrv_truncate(bs->file, offset);
|
|
}
|
|
|
|
static int raw_probe(const uint8_t *buf, int buf_size, const char *filename)
|
|
{
|
|
return 1; /* everything can be opened as raw image */
|
|
}
|
|
|
|
static int raw_is_inserted(BlockDriverState *bs)
|
|
{
|
|
return bdrv_is_inserted(bs->file);
|
|
}
|
|
|
|
static int raw_eject(BlockDriverState *bs, int eject_flag)
|
|
{
|
|
return bdrv_eject(bs->file, eject_flag);
|
|
}
|
|
|
|
static int raw_set_locked(BlockDriverState *bs, int locked)
|
|
{
|
|
bdrv_set_locked(bs->file, locked);
|
|
return 0;
|
|
}
|
|
|
|
static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf)
|
|
{
|
|
return bdrv_ioctl(bs->file, req, buf);
|
|
}
|
|
|
|
static BlockDriverAIOCB *raw_aio_ioctl(BlockDriverState *bs,
|
|
unsigned long int req, void *buf,
|
|
BlockDriverCompletionFunc *cb, void *opaque)
|
|
{
|
|
return bdrv_aio_ioctl(bs->file, req, buf, cb, opaque);
|
|
}
|
|
|
|
static int raw_create(const char *filename, QEMUOptionParameter *options)
|
|
{
|
|
return bdrv_create_file(filename, options);
|
|
}
|
|
|
|
static QEMUOptionParameter raw_create_options[] = {
|
|
{
|
|
.name = BLOCK_OPT_SIZE,
|
|
.type = OPT_SIZE,
|
|
.help = "Virtual disk size"
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
static BlockDriver bdrv_raw = {
|
|
.format_name = "raw",
|
|
|
|
/* It's really 0, but we need to make qemu_malloc() happy */
|
|
.instance_size = 1,
|
|
|
|
.bdrv_open = raw_open,
|
|
.bdrv_close = raw_close,
|
|
.bdrv_read = raw_read,
|
|
.bdrv_write = raw_write,
|
|
.bdrv_flush = raw_flush,
|
|
.bdrv_probe = raw_probe,
|
|
.bdrv_getlength = raw_getlength,
|
|
.bdrv_truncate = raw_truncate,
|
|
|
|
.bdrv_aio_readv = raw_aio_readv,
|
|
.bdrv_aio_writev = raw_aio_writev,
|
|
.bdrv_aio_flush = raw_aio_flush,
|
|
|
|
.bdrv_is_inserted = raw_is_inserted,
|
|
.bdrv_eject = raw_eject,
|
|
.bdrv_set_locked = raw_set_locked,
|
|
.bdrv_ioctl = raw_ioctl,
|
|
.bdrv_aio_ioctl = raw_aio_ioctl,
|
|
|
|
.bdrv_create = raw_create,
|
|
.create_options = raw_create_options,
|
|
};
|
|
|
|
static void bdrv_raw_init(void)
|
|
{
|
|
bdrv_register(&bdrv_raw);
|
|
}
|
|
|
|
block_init(bdrv_raw_init);
|