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1 | faf07963 | pbrook | #ifndef BLOCK_H
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2 | faf07963 | pbrook | #define BLOCK_H
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3 | faf07963 | pbrook | |
4 | a76bab49 | aliguori | #include "qemu-aio.h" |
5 | a76bab49 | aliguori | |
6 | faf07963 | pbrook | /* block.c */
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7 | faf07963 | pbrook | typedef struct BlockDriver BlockDriver; |
8 | faf07963 | pbrook | |
9 | faf07963 | pbrook | extern BlockDriver bdrv_raw;
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10 | faf07963 | pbrook | extern BlockDriver bdrv_host_device;
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11 | faf07963 | pbrook | extern BlockDriver bdrv_cow;
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12 | faf07963 | pbrook | extern BlockDriver bdrv_qcow;
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13 | faf07963 | pbrook | extern BlockDriver bdrv_vmdk;
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14 | faf07963 | pbrook | extern BlockDriver bdrv_cloop;
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15 | faf07963 | pbrook | extern BlockDriver bdrv_dmg;
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16 | faf07963 | pbrook | extern BlockDriver bdrv_bochs;
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17 | faf07963 | pbrook | extern BlockDriver bdrv_vpc;
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18 | faf07963 | pbrook | extern BlockDriver bdrv_vvfat;
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19 | faf07963 | pbrook | extern BlockDriver bdrv_qcow2;
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20 | faf07963 | pbrook | extern BlockDriver bdrv_parallels;
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21 | 75818250 | ths | extern BlockDriver bdrv_nbd;
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22 | faf07963 | pbrook | |
23 | faf07963 | pbrook | typedef struct BlockDriverInfo { |
24 | faf07963 | pbrook | /* in bytes, 0 if irrelevant */
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25 | faf07963 | pbrook | int cluster_size;
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26 | faf07963 | pbrook | /* offset at which the VM state can be saved (0 if not possible) */
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27 | faf07963 | pbrook | int64_t vm_state_offset; |
28 | faf07963 | pbrook | } BlockDriverInfo; |
29 | faf07963 | pbrook | |
30 | faf07963 | pbrook | typedef struct QEMUSnapshotInfo { |
31 | faf07963 | pbrook | char id_str[128]; /* unique snapshot id */ |
32 | faf07963 | pbrook | /* the following fields are informative. They are not needed for
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33 | faf07963 | pbrook | the consistency of the snapshot */
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34 | faf07963 | pbrook | char name[256]; /* user choosen name */ |
35 | faf07963 | pbrook | uint32_t vm_state_size; /* VM state info size */
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36 | faf07963 | pbrook | uint32_t date_sec; /* UTC date of the snapshot */
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37 | faf07963 | pbrook | uint32_t date_nsec; |
38 | faf07963 | pbrook | uint64_t vm_clock_nsec; /* VM clock relative to boot */
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39 | faf07963 | pbrook | } QEMUSnapshotInfo; |
40 | faf07963 | pbrook | |
41 | faf07963 | pbrook | #define BDRV_O_RDONLY 0x0000 |
42 | faf07963 | pbrook | #define BDRV_O_RDWR 0x0002 |
43 | faf07963 | pbrook | #define BDRV_O_ACCESS 0x0003 |
44 | faf07963 | pbrook | #define BDRV_O_CREAT 0x0004 /* create an empty file */ |
45 | faf07963 | pbrook | #define BDRV_O_SNAPSHOT 0x0008 /* open the file read only and save writes in a snapshot */ |
46 | faf07963 | pbrook | #define BDRV_O_FILE 0x0010 /* open as a raw file (do not try to |
47 | faf07963 | pbrook | use a disk image format on top of
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48 | faf07963 | pbrook | it (default for
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49 | faf07963 | pbrook | bdrv_file_open()) */
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50 | 9f7965c7 | aliguori | #define BDRV_O_NOCACHE 0x0020 /* do not use the host page cache */ |
51 | 9f7965c7 | aliguori | #define BDRV_O_CACHE_WB 0x0040 /* use write-back caching */ |
52 | 4dc822d7 | aliguori | #define BDRV_O_CACHE_DEF 0x0080 /* use default caching */ |
53 | 9f7965c7 | aliguori | |
54 | 4dc822d7 | aliguori | #define BDRV_O_CACHE_MASK (BDRV_O_NOCACHE | BDRV_O_CACHE_WB | BDRV_O_CACHE_DEF)
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55 | faf07963 | pbrook | |
56 | faf07963 | pbrook | void bdrv_info(void); |
57 | a36e69dd | ths | void bdrv_info_stats(void); |
58 | faf07963 | pbrook | |
59 | faf07963 | pbrook | void bdrv_init(void); |
60 | faf07963 | pbrook | BlockDriver *bdrv_find_format(const char *format_name); |
61 | faf07963 | pbrook | int bdrv_create(BlockDriver *drv,
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62 | faf07963 | pbrook | const char *filename, int64_t size_in_sectors, |
63 | faf07963 | pbrook | const char *backing_file, int flags); |
64 | faf07963 | pbrook | BlockDriverState *bdrv_new(const char *device_name); |
65 | faf07963 | pbrook | void bdrv_delete(BlockDriverState *bs);
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66 | faf07963 | pbrook | int bdrv_file_open(BlockDriverState **pbs, const char *filename, int flags); |
67 | faf07963 | pbrook | int bdrv_open(BlockDriverState *bs, const char *filename, int flags); |
68 | faf07963 | pbrook | int bdrv_open2(BlockDriverState *bs, const char *filename, int flags, |
69 | faf07963 | pbrook | BlockDriver *drv); |
70 | faf07963 | pbrook | void bdrv_close(BlockDriverState *bs);
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71 | faf07963 | pbrook | int bdrv_read(BlockDriverState *bs, int64_t sector_num,
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72 | faf07963 | pbrook | uint8_t *buf, int nb_sectors);
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73 | faf07963 | pbrook | int bdrv_write(BlockDriverState *bs, int64_t sector_num,
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74 | faf07963 | pbrook | const uint8_t *buf, int nb_sectors); |
75 | faf07963 | pbrook | int bdrv_pread(BlockDriverState *bs, int64_t offset,
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76 | faf07963 | pbrook | void *buf, int count); |
77 | faf07963 | pbrook | int bdrv_pwrite(BlockDriverState *bs, int64_t offset,
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78 | faf07963 | pbrook | const void *buf, int count); |
79 | faf07963 | pbrook | int bdrv_truncate(BlockDriverState *bs, int64_t offset);
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80 | faf07963 | pbrook | int64_t bdrv_getlength(BlockDriverState *bs); |
81 | 96b8f136 | ths | void bdrv_get_geometry(BlockDriverState *bs, uint64_t *nb_sectors_ptr);
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82 | f3d54fc4 | aliguori | void bdrv_guess_geometry(BlockDriverState *bs, int *pcyls, int *pheads, int *psecs); |
83 | faf07963 | pbrook | int bdrv_commit(BlockDriverState *bs);
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84 | faf07963 | pbrook | /* async block I/O */
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85 | faf07963 | pbrook | typedef struct BlockDriverAIOCB BlockDriverAIOCB; |
86 | faf07963 | pbrook | typedef void BlockDriverCompletionFunc(void *opaque, int ret); |
87 | faf07963 | pbrook | |
88 | faf07963 | pbrook | BlockDriverAIOCB *bdrv_aio_read(BlockDriverState *bs, int64_t sector_num, |
89 | faf07963 | pbrook | uint8_t *buf, int nb_sectors,
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90 | faf07963 | pbrook | BlockDriverCompletionFunc *cb, void *opaque);
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91 | faf07963 | pbrook | BlockDriverAIOCB *bdrv_aio_write(BlockDriverState *bs, int64_t sector_num, |
92 | faf07963 | pbrook | const uint8_t *buf, int nb_sectors, |
93 | faf07963 | pbrook | BlockDriverCompletionFunc *cb, void *opaque);
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94 | faf07963 | pbrook | void bdrv_aio_cancel(BlockDriverAIOCB *acb);
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95 | faf07963 | pbrook | |
96 | faf07963 | pbrook | int qemu_key_check(BlockDriverState *bs, const char *name); |
97 | faf07963 | pbrook | |
98 | faf07963 | pbrook | /* Ensure contents are flushed to disk. */
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99 | faf07963 | pbrook | void bdrv_flush(BlockDriverState *bs);
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100 | c6ca28d6 | aliguori | void bdrv_flush_all(void); |
101 | c6ca28d6 | aliguori | |
102 | f58c7b35 | ths | int bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors, |
103 | f58c7b35 | ths | int *pnum);
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104 | faf07963 | pbrook | |
105 | faf07963 | pbrook | #define BDRV_TYPE_HD 0 |
106 | faf07963 | pbrook | #define BDRV_TYPE_CDROM 1 |
107 | faf07963 | pbrook | #define BDRV_TYPE_FLOPPY 2 |
108 | faf07963 | pbrook | #define BIOS_ATA_TRANSLATION_AUTO 0 |
109 | faf07963 | pbrook | #define BIOS_ATA_TRANSLATION_NONE 1 |
110 | faf07963 | pbrook | #define BIOS_ATA_TRANSLATION_LBA 2 |
111 | faf07963 | pbrook | #define BIOS_ATA_TRANSLATION_LARGE 3 |
112 | faf07963 | pbrook | #define BIOS_ATA_TRANSLATION_RECHS 4 |
113 | faf07963 | pbrook | |
114 | faf07963 | pbrook | void bdrv_set_geometry_hint(BlockDriverState *bs,
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115 | faf07963 | pbrook | int cyls, int heads, int secs); |
116 | faf07963 | pbrook | void bdrv_set_type_hint(BlockDriverState *bs, int type); |
117 | faf07963 | pbrook | void bdrv_set_translation_hint(BlockDriverState *bs, int translation); |
118 | faf07963 | pbrook | void bdrv_get_geometry_hint(BlockDriverState *bs,
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119 | faf07963 | pbrook | int *pcyls, int *pheads, int *psecs); |
120 | faf07963 | pbrook | int bdrv_get_type_hint(BlockDriverState *bs);
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121 | faf07963 | pbrook | int bdrv_get_translation_hint(BlockDriverState *bs);
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122 | faf07963 | pbrook | int bdrv_is_removable(BlockDriverState *bs);
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123 | faf07963 | pbrook | int bdrv_is_read_only(BlockDriverState *bs);
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124 | 985a03b0 | ths | int bdrv_is_sg(BlockDriverState *bs);
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125 | faf07963 | pbrook | int bdrv_is_inserted(BlockDriverState *bs);
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126 | faf07963 | pbrook | int bdrv_media_changed(BlockDriverState *bs);
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127 | faf07963 | pbrook | int bdrv_is_locked(BlockDriverState *bs);
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128 | faf07963 | pbrook | void bdrv_set_locked(BlockDriverState *bs, int locked); |
129 | faf07963 | pbrook | void bdrv_eject(BlockDriverState *bs, int eject_flag); |
130 | faf07963 | pbrook | void bdrv_set_change_cb(BlockDriverState *bs,
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131 | faf07963 | pbrook | void (*change_cb)(void *opaque), void *opaque); |
132 | faf07963 | pbrook | void bdrv_get_format(BlockDriverState *bs, char *buf, int buf_size); |
133 | faf07963 | pbrook | BlockDriverState *bdrv_find(const char *name); |
134 | faf07963 | pbrook | void bdrv_iterate(void (*it)(void *opaque, const char *name), void *opaque); |
135 | faf07963 | pbrook | int bdrv_is_encrypted(BlockDriverState *bs);
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136 | faf07963 | pbrook | int bdrv_set_key(BlockDriverState *bs, const char *key); |
137 | faf07963 | pbrook | void bdrv_iterate_format(void (*it)(void *opaque, const char *name), |
138 | faf07963 | pbrook | void *opaque);
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139 | faf07963 | pbrook | const char *bdrv_get_device_name(BlockDriverState *bs); |
140 | faf07963 | pbrook | int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num,
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141 | faf07963 | pbrook | const uint8_t *buf, int nb_sectors); |
142 | faf07963 | pbrook | int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi);
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143 | faf07963 | pbrook | |
144 | faf07963 | pbrook | void bdrv_get_backing_filename(BlockDriverState *bs,
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145 | faf07963 | pbrook | char *filename, int filename_size); |
146 | faf07963 | pbrook | int bdrv_snapshot_create(BlockDriverState *bs,
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147 | faf07963 | pbrook | QEMUSnapshotInfo *sn_info); |
148 | faf07963 | pbrook | int bdrv_snapshot_goto(BlockDriverState *bs,
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149 | faf07963 | pbrook | const char *snapshot_id); |
150 | faf07963 | pbrook | int bdrv_snapshot_delete(BlockDriverState *bs, const char *snapshot_id); |
151 | faf07963 | pbrook | int bdrv_snapshot_list(BlockDriverState *bs,
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152 | faf07963 | pbrook | QEMUSnapshotInfo **psn_info); |
153 | faf07963 | pbrook | char *bdrv_snapshot_dump(char *buf, int buf_size, QEMUSnapshotInfo *sn); |
154 | 985a03b0 | ths | int bdrv_ioctl(BlockDriverState *bs, unsigned long int req, void *buf); |
155 | faf07963 | pbrook | |
156 | faf07963 | pbrook | char *get_human_readable_size(char *buf, int buf_size, int64_t size); |
157 | faf07963 | pbrook | int path_is_absolute(const char *path); |
158 | faf07963 | pbrook | void path_combine(char *dest, int dest_size, |
159 | faf07963 | pbrook | const char *base_path, |
160 | faf07963 | pbrook | const char *filename); |
161 | faf07963 | pbrook | |
162 | faf07963 | pbrook | #endif |