diff options
Diffstat (limited to 'block/raw.c')
| -rw-r--r-- | block/raw.c | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/block/raw.c b/block/raw.c new file mode 100644 index 0000000000..953e2858af --- /dev/null +++ b/block/raw.c @@ -0,0 +1,171 @@ + +#include "qemu-common.h" +#include "block_int.h" +#include "module.h" + +typedef struct RAWState { + BlockDriverState *hd; +} RAWState; + +static int raw_open(BlockDriverState *bs, const char *filename, int flags) +{ + RAWState *s = bs->opaque; + int ret; + + ret = bdrv_file_open(&s->hd, filename, flags); + if (!ret) { + bs->sg = s->hd->sg; + } + + return ret; +} + +static int raw_read(BlockDriverState *bs, int64_t sector_num, + uint8_t *buf, int nb_sectors) +{ + RAWState *s = bs->opaque; + return bdrv_read(s->hd, sector_num, buf, nb_sectors); +} + +static int raw_write(BlockDriverState *bs, int64_t sector_num, + const uint8_t *buf, int nb_sectors) +{ + RAWState *s = bs->opaque; + return bdrv_write(s->hd, 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) +{ + RAWState *s = bs->opaque; + + return bdrv_aio_readv(s->hd, 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) +{ + RAWState *s = bs->opaque; + + return bdrv_aio_writev(s->hd, sector_num, qiov, nb_sectors, cb, opaque); +} + +static void raw_close(BlockDriverState *bs) +{ + RAWState *s = bs->opaque; + bdrv_delete(s->hd); +} + +static void raw_flush(BlockDriverState *bs) +{ + RAWState *s = bs->opaque; + bdrv_flush(s->hd); +} + +static BlockDriverAIOCB *raw_aio_flush(BlockDriverState *bs, + BlockDriverCompletionFunc *cb, void *opaque) +{ + RAWState *s = bs->opaque; + return bdrv_aio_flush(s->hd, cb, opaque); +} + +static int64_t raw_getlength(BlockDriverState *bs) +{ + RAWState *s = bs->opaque; + return bdrv_getlength(s->hd); +} + +static int raw_truncate(BlockDriverState *bs, int64_t offset) +{ + RAWState *s = bs->opaque; + return bdrv_truncate(s->hd, 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) +{ + RAWState *s = bs->opaque; + return bdrv_is_inserted(s->hd); +} + +static int raw_eject(BlockDriverState *bs, int eject_flag) +{ + RAWState *s = bs->opaque; + return bdrv_eject(s->hd, eject_flag); +} + +static int raw_set_locked(BlockDriverState *bs, int locked) +{ + RAWState *s = bs->opaque; + bdrv_set_locked(s->hd, locked); + return 0; +} + +static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) +{ + RAWState *s = bs->opaque; + return bdrv_ioctl(s->hd, req, buf); +} + +static BlockDriverAIOCB *raw_aio_ioctl(BlockDriverState *bs, + unsigned long int req, void *buf, + BlockDriverCompletionFunc *cb, void *opaque) +{ + RAWState *s = bs->opaque; + return bdrv_aio_ioctl(s->hd, 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", + + .instance_size = sizeof(RAWState), + + .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); |