/* BlockDriver implementation for "raw"
*
- * Copyright (C) 2013, Red Hat, Inc.
+ * Copyright (C) 2010, 2013, Red Hat, Inc.
*
* Author:
*/
#include "block/block_int.h"
+#include "qemu/option.h"
-static TYPE raw_reopen_prepare(BlockDriverState *bs)
+static QEMUOptionParameter raw_create_options[] = {
+ {
+ .name = BLOCK_OPT_SIZE,
+ .type = OPT_SIZE,
+ .help = "Virtual disk size"
+ },
+ { 0 }
+};
+
+static int raw_reopen_prepare(BDRVReopenState *reopen_state,
+ BlockReopenQueue *queue, Error **errp)
{
- return bdrv_reopen_prepare(bs->file);
+ return 0;
}
-static TYPE raw_co_readv(BlockDriverState *bs)
+static int coroutine_fn raw_co_readv(BlockDriverState *bs, int64_t sector_num,
+ int nb_sectors, QEMUIOVector *qiov)
{
BLKDBG_EVENT(bs->file, BLKDBG_READ_AIO);
- return bdrv_co_readv(bs->file);
+ return bdrv_co_readv(bs->file, sector_num, nb_sectors, qiov);
}
-static TYPE raw_co_writev(BlockDriverState *bs)
+static int coroutine_fn raw_co_writev(BlockDriverState *bs, int64_t sector_num,
+ int nb_sectors, QEMUIOVector *qiov)
{
BLKDBG_EVENT(bs->file, BLKDBG_WRITE_AIO);
- return bdrv_co_writev(bs->file);
+ return bdrv_co_writev(bs->file, sector_num, nb_sectors, qiov);
}
-static TYPE raw_co_is_allocated(BlockDriverState *bs)
+static int64_t coroutine_fn raw_co_get_block_status(BlockDriverState *bs,
+ int64_t sector_num,
+ int nb_sectors, int *pnum)
{
- return bdrv_co_is_allocated(bs->file);
+ *pnum = nb_sectors;
+ return BDRV_BLOCK_RAW | BDRV_BLOCK_OFFSET_VALID | BDRV_BLOCK_DATA |
+ (sector_num << BDRV_SECTOR_BITS);
}
-static TYPE raw_co_write_zeroes(BlockDriverState *bs)
+static int coroutine_fn raw_co_write_zeroes(BlockDriverState *bs,
+ int64_t sector_num, int nb_sectors,
+ BdrvRequestFlags flags)
{
- return bdrv_co_write_zeroes(bs->file);
+ return bdrv_co_write_zeroes(bs->file, sector_num, nb_sectors, flags);
}
-static TYPE raw_co_discard(BlockDriverState *bs)
+static int coroutine_fn raw_co_discard(BlockDriverState *bs,
+ int64_t sector_num, int nb_sectors)
{
- return bdrv_co_discard(bs->file);
+ return bdrv_co_discard(bs->file, sector_num, nb_sectors);
}
-static TYPE raw_getlength(BlockDriverState *bs)
+static int64_t raw_getlength(BlockDriverState *bs)
{
return bdrv_getlength(bs->file);
}
-static TYPE raw_get_info(BlockDriverState *bs)
+static int raw_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
+{
+ return bdrv_get_info(bs->file, bdi);
+}
+
+static int raw_refresh_limits(BlockDriverState *bs)
{
- return bdrv_get_info(bs->file);
+ bs->bl = bs->file->bl;
+ return 0;
}
-static TYPE raw_truncate(BlockDriverState *bs)
+static int raw_truncate(BlockDriverState *bs, int64_t offset)
{
- return bdrv_truncate(bs->file);
+ return bdrv_truncate(bs->file, offset);
}
-static TYPE raw_is_inserted(BlockDriverState *bs)
+static int raw_is_inserted(BlockDriverState *bs)
{
return bdrv_is_inserted(bs->file);
}
-static TYPE raw_media_changed(BlockDriverState *bs)
+static int raw_media_changed(BlockDriverState *bs)
{
return bdrv_media_changed(bs->file);
}
-static TYPE raw_eject(BlockDriverState *bs)
+static void raw_eject(BlockDriverState *bs, bool eject_flag)
{
- return bdrv_eject(bs->file);
+ bdrv_eject(bs->file, eject_flag);
}
-static TYPE raw_lock_medium(BlockDriverState *bs)
+static void raw_lock_medium(BlockDriverState *bs, bool locked)
{
- return bdrv_lock_medium(bs->file);
+ bdrv_lock_medium(bs->file, locked);
}
-static TYPE raw_ioctl(BlockDriverState *bs)
+static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf)
{
- return bdrv_ioctl(bs->file);
+ return bdrv_ioctl(bs->file, req, buf);
}
-static TYPE raw_aio_ioctl(BlockDriverState *bs)
+static BlockDriverAIOCB *raw_aio_ioctl(BlockDriverState *bs,
+ unsigned long int req, void *buf,
+ BlockDriverCompletionFunc *cb,
+ void *opaque)
{
- return bdrv_aio_ioctl(bs->file);
+ return bdrv_aio_ioctl(bs->file, req, buf, cb, opaque);
}
-static TYPE raw_has_zero_init(BlockDriverState *bs)
+static int raw_has_zero_init(BlockDriverState *bs)
{
return bdrv_has_zero_init(bs->file);
}
+static int raw_create(const char *filename, QEMUOptionParameter *options,
+ Error **errp)
+{
+ Error *local_err = NULL;
+ int ret;
+
+ ret = bdrv_create_file(filename, options, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ }
+ return ret;
+}
+
+static int raw_open(BlockDriverState *bs, QDict *options, int flags,
+ Error **errp)
+{
+ bs->sg = bs->file->sg;
+ return 0;
+}
+
+static void raw_close(BlockDriverState *bs)
+{
+}
+
+static int raw_probe(const uint8_t *buf, int buf_size, const char *filename)
+{
+ /* smallest possible positive score so that raw is used if and only if no
+ * other block driver works
+ */
+ return 1;
+}
+
+static BlockDriver bdrv_raw = {
+ .format_name = "raw",
+ .bdrv_probe = &raw_probe,
+ .bdrv_reopen_prepare = &raw_reopen_prepare,
+ .bdrv_open = &raw_open,
+ .bdrv_close = &raw_close,
+ .bdrv_create = &raw_create,
+ .bdrv_co_readv = &raw_co_readv,
+ .bdrv_co_writev = &raw_co_writev,
+ .bdrv_co_write_zeroes = &raw_co_write_zeroes,
+ .bdrv_co_discard = &raw_co_discard,
+ .bdrv_co_get_block_status = &raw_co_get_block_status,
+ .bdrv_truncate = &raw_truncate,
+ .bdrv_getlength = &raw_getlength,
+ .has_variable_length = true,
+ .bdrv_get_info = &raw_get_info,
+ .bdrv_refresh_limits = &raw_refresh_limits,
+ .bdrv_is_inserted = &raw_is_inserted,
+ .bdrv_media_changed = &raw_media_changed,
+ .bdrv_eject = &raw_eject,
+ .bdrv_lock_medium = &raw_lock_medium,
+ .bdrv_ioctl = &raw_ioctl,
+ .bdrv_aio_ioctl = &raw_aio_ioctl,
+ .create_options = &raw_create_options[0],
+ .bdrv_has_zero_init = &raw_has_zero_init
+};
+
+static void bdrv_raw_init(void)
+{
+ bdrv_register(&bdrv_raw);
+}
+
+block_init(bdrv_raw_init);
projects / qemu.git / blobdiff