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1 | ea2384d3 | bellard | /*
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2 | ea2384d3 | bellard | * QEMU System Emulator block driver
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3 | ea2384d3 | bellard | *
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4 | ea2384d3 | bellard | * Copyright (c) 2003 Fabrice Bellard
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5 | ea2384d3 | bellard | *
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6 | ea2384d3 | bellard | * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 | ea2384d3 | bellard | * of this software and associated documentation files (the "Software"), to deal
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8 | ea2384d3 | bellard | * in the Software without restriction, including without limitation the rights
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9 | ea2384d3 | bellard | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 | ea2384d3 | bellard | * copies of the Software, and to permit persons to whom the Software is
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11 | ea2384d3 | bellard | * furnished to do so, subject to the following conditions:
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12 | ea2384d3 | bellard | *
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13 | ea2384d3 | bellard | * The above copyright notice and this permission notice shall be included in
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14 | ea2384d3 | bellard | * all copies or substantial portions of the Software.
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15 | ea2384d3 | bellard | *
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16 | ea2384d3 | bellard | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 | ea2384d3 | bellard | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 | ea2384d3 | bellard | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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19 | ea2384d3 | bellard | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 | ea2384d3 | bellard | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 | ea2384d3 | bellard | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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22 | ea2384d3 | bellard | * THE SOFTWARE.
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23 | ea2384d3 | bellard | */
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24 | ea2384d3 | bellard | #ifndef BLOCK_INT_H
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25 | ea2384d3 | bellard | #define BLOCK_INT_H
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26 | ea2384d3 | bellard | |
27 | ea2384d3 | bellard | struct BlockDriver {
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28 | ea2384d3 | bellard | const char *format_name; |
29 | ea2384d3 | bellard | int instance_size;
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30 | ea2384d3 | bellard | int (*bdrv_probe)(const uint8_t *buf, int buf_size, const char *filename); |
31 | ea2384d3 | bellard | int (*bdrv_open)(BlockDriverState *bs, const char *filename); |
32 | ea2384d3 | bellard | int (*bdrv_read)(BlockDriverState *bs, int64_t sector_num,
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33 | ea2384d3 | bellard | uint8_t *buf, int nb_sectors);
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34 | ea2384d3 | bellard | int (*bdrv_write)(BlockDriverState *bs, int64_t sector_num,
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35 | ea2384d3 | bellard | const uint8_t *buf, int nb_sectors); |
36 | e2731add | bellard | void (*bdrv_close)(BlockDriverState *bs);
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37 | ea2384d3 | bellard | int (*bdrv_create)(const char *filename, int64_t total_sectors, |
38 | ea2384d3 | bellard | const char *backing_file, int flags); |
39 | ea2384d3 | bellard | int (*bdrv_is_allocated)(BlockDriverState *bs, int64_t sector_num,
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40 | ea2384d3 | bellard | int nb_sectors, int *pnum); |
41 | ea2384d3 | bellard | int (*bdrv_set_key)(BlockDriverState *bs, const char *key); |
42 | ea2384d3 | bellard | struct BlockDriver *next;
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43 | ea2384d3 | bellard | }; |
44 | ea2384d3 | bellard | |
45 | ea2384d3 | bellard | struct BlockDriverState {
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46 | ea2384d3 | bellard | int64_t total_sectors; |
47 | ea2384d3 | bellard | int read_only; /* if true, the media is read only */ |
48 | ea2384d3 | bellard | int inserted; /* if true, the media is present */ |
49 | ea2384d3 | bellard | int removable; /* if true, the media can be removed */ |
50 | ea2384d3 | bellard | int locked; /* if true, the media cannot temporarily be ejected */ |
51 | ea2384d3 | bellard | int encrypted; /* if true, the media is encrypted */ |
52 | ea2384d3 | bellard | /* event callback when inserting/removing */
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53 | ea2384d3 | bellard | void (*change_cb)(void *opaque); |
54 | ea2384d3 | bellard | void *change_opaque;
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55 | ea2384d3 | bellard | |
56 | ea2384d3 | bellard | BlockDriver *drv; |
57 | ea2384d3 | bellard | void *opaque;
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58 | ea2384d3 | bellard | |
59 | ea2384d3 | bellard | int boot_sector_enabled;
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60 | ea2384d3 | bellard | uint8_t boot_sector_data[512];
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61 | ea2384d3 | bellard | |
62 | ea2384d3 | bellard | char filename[1024]; |
63 | ea2384d3 | bellard | char backing_file[1024]; /* if non zero, the image is a diff of |
64 | ea2384d3 | bellard | this file image */
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65 | ea2384d3 | bellard | int is_temporary;
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66 | ea2384d3 | bellard | |
67 | ea2384d3 | bellard | BlockDriverState *backing_hd; |
68 | ea2384d3 | bellard | |
69 | ea2384d3 | bellard | /* NOTE: the following infos are only hints for real hardware
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70 | ea2384d3 | bellard | drivers. They are not used by the block driver */
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71 | 46d4767d | bellard | int cyls, heads, secs, translation;
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72 | ea2384d3 | bellard | int type;
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73 | ea2384d3 | bellard | char device_name[32]; |
74 | ea2384d3 | bellard | BlockDriverState *next; |
75 | ea2384d3 | bellard | }; |
76 | ea2384d3 | bellard | |
77 | ea2384d3 | bellard | #endif /* BLOCK_INT_H */ |