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