78 lines
3.0 KiB
C
78 lines
3.0 KiB
C
/*
|
|
* QEMU System Emulator block driver
|
|
*
|
|
* Copyright (c) 2003 Fabrice Bellard
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
#ifndef BLOCK_INT_H
|
|
#define BLOCK_INT_H
|
|
|
|
struct BlockDriver {
|
|
const char *format_name;
|
|
int instance_size;
|
|
int (*bdrv_probe)(const uint8_t *buf, int buf_size, const char *filename);
|
|
int (*bdrv_open)(BlockDriverState *bs, const char *filename);
|
|
int (*bdrv_read)(BlockDriverState *bs, int64_t sector_num,
|
|
uint8_t *buf, int nb_sectors);
|
|
int (*bdrv_write)(BlockDriverState *bs, int64_t sector_num,
|
|
const uint8_t *buf, int nb_sectors);
|
|
void (*bdrv_close)(BlockDriverState *bs);
|
|
int (*bdrv_create)(const char *filename, int64_t total_sectors,
|
|
const char *backing_file, int flags);
|
|
int (*bdrv_is_allocated)(BlockDriverState *bs, int64_t sector_num,
|
|
int nb_sectors, int *pnum);
|
|
int (*bdrv_set_key)(BlockDriverState *bs, const char *key);
|
|
struct BlockDriver *next;
|
|
};
|
|
|
|
struct BlockDriverState {
|
|
int64_t total_sectors;
|
|
int read_only; /* if true, the media is read only */
|
|
int inserted; /* if true, the media is present */
|
|
int removable; /* if true, the media can be removed */
|
|
int locked; /* if true, the media cannot temporarily be ejected */
|
|
int encrypted; /* if true, the media is encrypted */
|
|
/* event callback when inserting/removing */
|
|
void (*change_cb)(void *opaque);
|
|
void *change_opaque;
|
|
|
|
BlockDriver *drv;
|
|
void *opaque;
|
|
|
|
int boot_sector_enabled;
|
|
uint8_t boot_sector_data[512];
|
|
|
|
char filename[1024];
|
|
char backing_file[1024]; /* if non zero, the image is a diff of
|
|
this file image */
|
|
int is_temporary;
|
|
|
|
BlockDriverState *backing_hd;
|
|
|
|
/* NOTE: the following infos are only hints for real hardware
|
|
drivers. They are not used by the block driver */
|
|
int cyls, heads, secs, translation;
|
|
int type;
|
|
char device_name[32];
|
|
BlockDriverState *next;
|
|
};
|
|
|
|
#endif /* BLOCK_INT_H */
|