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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 | 3b69e4b9 | aliguori | #include "qemu-common.h" |
6 | a76bab49 | aliguori | |
7 | faf07963 | pbrook | /* block.c */
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8 | faf07963 | pbrook | typedef struct BlockDriver BlockDriver; |
9 | faf07963 | pbrook | |
10 | faf07963 | pbrook | extern BlockDriver bdrv_raw;
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11 | faf07963 | pbrook | extern BlockDriver bdrv_host_device;
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12 | faf07963 | pbrook | extern BlockDriver bdrv_cow;
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13 | faf07963 | pbrook | extern BlockDriver bdrv_qcow;
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14 | faf07963 | pbrook | extern BlockDriver bdrv_vmdk;
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15 | faf07963 | pbrook | extern BlockDriver bdrv_cloop;
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16 | faf07963 | pbrook | extern BlockDriver bdrv_dmg;
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17 | faf07963 | pbrook | extern BlockDriver bdrv_bochs;
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18 | faf07963 | pbrook | extern BlockDriver bdrv_vpc;
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19 | faf07963 | pbrook | extern BlockDriver bdrv_vvfat;
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20 | faf07963 | pbrook | extern BlockDriver bdrv_qcow2;
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21 | faf07963 | pbrook | extern BlockDriver bdrv_parallels;
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22 | 75818250 | ths | extern BlockDriver bdrv_nbd;
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23 | faf07963 | pbrook | |
24 | faf07963 | pbrook | typedef struct BlockDriverInfo { |
25 | faf07963 | pbrook | /* in bytes, 0 if irrelevant */
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26 | faf07963 | pbrook | int cluster_size;
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27 | faf07963 | pbrook | /* offset at which the VM state can be saved (0 if not possible) */
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28 | faf07963 | pbrook | int64_t vm_state_offset; |
29 | faf07963 | pbrook | } BlockDriverInfo; |
30 | faf07963 | pbrook | |
31 | faf07963 | pbrook | typedef struct QEMUSnapshotInfo { |
32 | faf07963 | pbrook | char id_str[128]; /* unique snapshot id */ |
33 | faf07963 | pbrook | /* the following fields are informative. They are not needed for
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34 | faf07963 | pbrook | the consistency of the snapshot */
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35 | faf07963 | pbrook | char name[256]; /* user choosen name */ |
36 | faf07963 | pbrook | uint32_t vm_state_size; /* VM state info size */
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37 | faf07963 | pbrook | uint32_t date_sec; /* UTC date of the snapshot */
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38 | faf07963 | pbrook | uint32_t date_nsec; |
39 | faf07963 | pbrook | uint64_t vm_clock_nsec; /* VM clock relative to boot */
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40 | faf07963 | pbrook | } QEMUSnapshotInfo; |
41 | faf07963 | pbrook | |
42 | faf07963 | pbrook | #define BDRV_O_RDONLY 0x0000 |
43 | faf07963 | pbrook | #define BDRV_O_RDWR 0x0002 |
44 | faf07963 | pbrook | #define BDRV_O_ACCESS 0x0003 |
45 | faf07963 | pbrook | #define BDRV_O_CREAT 0x0004 /* create an empty file */ |
46 | faf07963 | pbrook | #define BDRV_O_SNAPSHOT 0x0008 /* open the file read only and save writes in a snapshot */ |
47 | faf07963 | pbrook | #define BDRV_O_FILE 0x0010 /* open as a raw file (do not try to |
48 | faf07963 | pbrook | use a disk image format on top of
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49 | faf07963 | pbrook | it (default for
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50 | faf07963 | pbrook | bdrv_file_open()) */
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51 | 9f7965c7 | aliguori | #define BDRV_O_NOCACHE 0x0020 /* do not use the host page cache */ |
52 | 9f7965c7 | aliguori | #define BDRV_O_CACHE_WB 0x0040 /* use write-back caching */ |
53 | 4dc822d7 | aliguori | #define BDRV_O_CACHE_DEF 0x0080 /* use default caching */ |
54 | 9f7965c7 | aliguori | |
55 | 4dc822d7 | aliguori | #define BDRV_O_CACHE_MASK (BDRV_O_NOCACHE | BDRV_O_CACHE_WB | BDRV_O_CACHE_DEF)
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56 | faf07963 | pbrook | |
57 | 376253ec | aliguori | void bdrv_info(Monitor *mon);
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58 | 376253ec | aliguori | void bdrv_info_stats(Monitor *mon);
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59 | faf07963 | pbrook | |
60 | faf07963 | pbrook | void bdrv_init(void); |
61 | faf07963 | pbrook | BlockDriver *bdrv_find_format(const char *format_name); |
62 | faf07963 | pbrook | int bdrv_create(BlockDriver *drv,
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63 | faf07963 | pbrook | const char *filename, int64_t size_in_sectors, |
64 | faf07963 | pbrook | const char *backing_file, int flags); |
65 | 5eb45639 | aliguori | int bdrv_create2(BlockDriver *drv,
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66 | 5eb45639 | aliguori | const char *filename, int64_t size_in_sectors, |
67 | 5eb45639 | aliguori | const char *backing_file, const char *backing_format, |
68 | 5eb45639 | aliguori | int flags);
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69 | faf07963 | pbrook | BlockDriverState *bdrv_new(const char *device_name); |
70 | faf07963 | pbrook | void bdrv_delete(BlockDriverState *bs);
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71 | faf07963 | pbrook | int bdrv_file_open(BlockDriverState **pbs, const char *filename, int flags); |
72 | faf07963 | pbrook | int bdrv_open(BlockDriverState *bs, const char *filename, int flags); |
73 | faf07963 | pbrook | int bdrv_open2(BlockDriverState *bs, const char *filename, int flags, |
74 | faf07963 | pbrook | BlockDriver *drv); |
75 | faf07963 | pbrook | void bdrv_close(BlockDriverState *bs);
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76 | faf07963 | pbrook | int bdrv_read(BlockDriverState *bs, int64_t sector_num,
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77 | faf07963 | pbrook | uint8_t *buf, int nb_sectors);
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78 | faf07963 | pbrook | int bdrv_write(BlockDriverState *bs, int64_t sector_num,
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79 | faf07963 | pbrook | const uint8_t *buf, int nb_sectors); |
80 | faf07963 | pbrook | int bdrv_pread(BlockDriverState *bs, int64_t offset,
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81 | faf07963 | pbrook | void *buf, int count); |
82 | faf07963 | pbrook | int bdrv_pwrite(BlockDriverState *bs, int64_t offset,
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83 | faf07963 | pbrook | const void *buf, int count); |
84 | faf07963 | pbrook | int bdrv_truncate(BlockDriverState *bs, int64_t offset);
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85 | faf07963 | pbrook | int64_t bdrv_getlength(BlockDriverState *bs); |
86 | 96b8f136 | ths | void bdrv_get_geometry(BlockDriverState *bs, uint64_t *nb_sectors_ptr);
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87 | f3d54fc4 | aliguori | void bdrv_guess_geometry(BlockDriverState *bs, int *pcyls, int *pheads, int *psecs); |
88 | faf07963 | pbrook | int bdrv_commit(BlockDriverState *bs);
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89 | faf07963 | pbrook | /* async block I/O */
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90 | faf07963 | pbrook | typedef struct BlockDriverAIOCB BlockDriverAIOCB; |
91 | faf07963 | pbrook | typedef void BlockDriverCompletionFunc(void *opaque, int ret); |
92 | faf07963 | pbrook | |
93 | 3b69e4b9 | aliguori | BlockDriverAIOCB *bdrv_aio_readv(BlockDriverState *bs, int64_t sector_num, |
94 | 3b69e4b9 | aliguori | QEMUIOVector *iov, int nb_sectors,
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95 | 3b69e4b9 | aliguori | BlockDriverCompletionFunc *cb, void *opaque);
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96 | 3b69e4b9 | aliguori | BlockDriverAIOCB *bdrv_aio_writev(BlockDriverState *bs, int64_t sector_num, |
97 | 3b69e4b9 | aliguori | QEMUIOVector *iov, int nb_sectors,
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98 | 3b69e4b9 | aliguori | BlockDriverCompletionFunc *cb, void *opaque);
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99 | 3b69e4b9 | aliguori | |
100 | faf07963 | pbrook | BlockDriverAIOCB *bdrv_aio_read(BlockDriverState *bs, int64_t sector_num, |
101 | faf07963 | pbrook | uint8_t *buf, int nb_sectors,
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102 | faf07963 | pbrook | BlockDriverCompletionFunc *cb, void *opaque);
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103 | faf07963 | pbrook | BlockDriverAIOCB *bdrv_aio_write(BlockDriverState *bs, int64_t sector_num, |
104 | faf07963 | pbrook | const uint8_t *buf, int nb_sectors, |
105 | faf07963 | pbrook | BlockDriverCompletionFunc *cb, void *opaque);
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106 | faf07963 | pbrook | void bdrv_aio_cancel(BlockDriverAIOCB *acb);
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107 | faf07963 | pbrook | |
108 | 7d780669 | aliguori | /* sg packet commands */
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109 | 221f715d | aliguori | int bdrv_ioctl(BlockDriverState *bs, unsigned long int req, void *buf); |
110 | 221f715d | aliguori | BlockDriverAIOCB *bdrv_aio_ioctl(BlockDriverState *bs, |
111 | 221f715d | aliguori | unsigned long int req, void *buf, |
112 | 221f715d | aliguori | BlockDriverCompletionFunc *cb, void *opaque);
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113 | 7d780669 | aliguori | |
114 | faf07963 | pbrook | /* Ensure contents are flushed to disk. */
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115 | faf07963 | pbrook | void bdrv_flush(BlockDriverState *bs);
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116 | c6ca28d6 | aliguori | void bdrv_flush_all(void); |
117 | c6ca28d6 | aliguori | |
118 | f58c7b35 | ths | int bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors, |
119 | f58c7b35 | ths | int *pnum);
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120 | faf07963 | pbrook | |
121 | faf07963 | pbrook | #define BDRV_TYPE_HD 0 |
122 | faf07963 | pbrook | #define BDRV_TYPE_CDROM 1 |
123 | faf07963 | pbrook | #define BDRV_TYPE_FLOPPY 2 |
124 | faf07963 | pbrook | #define BIOS_ATA_TRANSLATION_AUTO 0 |
125 | faf07963 | pbrook | #define BIOS_ATA_TRANSLATION_NONE 1 |
126 | faf07963 | pbrook | #define BIOS_ATA_TRANSLATION_LBA 2 |
127 | faf07963 | pbrook | #define BIOS_ATA_TRANSLATION_LARGE 3 |
128 | faf07963 | pbrook | #define BIOS_ATA_TRANSLATION_RECHS 4 |
129 | faf07963 | pbrook | |
130 | faf07963 | pbrook | void bdrv_set_geometry_hint(BlockDriverState *bs,
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131 | faf07963 | pbrook | int cyls, int heads, int secs); |
132 | faf07963 | pbrook | void bdrv_set_type_hint(BlockDriverState *bs, int type); |
133 | faf07963 | pbrook | void bdrv_set_translation_hint(BlockDriverState *bs, int translation); |
134 | faf07963 | pbrook | void bdrv_get_geometry_hint(BlockDriverState *bs,
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135 | faf07963 | pbrook | int *pcyls, int *pheads, int *psecs); |
136 | faf07963 | pbrook | int bdrv_get_type_hint(BlockDriverState *bs);
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137 | faf07963 | pbrook | int bdrv_get_translation_hint(BlockDriverState *bs);
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138 | faf07963 | pbrook | int bdrv_is_removable(BlockDriverState *bs);
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139 | faf07963 | pbrook | int bdrv_is_read_only(BlockDriverState *bs);
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140 | 985a03b0 | ths | int bdrv_is_sg(BlockDriverState *bs);
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141 | faf07963 | pbrook | int bdrv_is_inserted(BlockDriverState *bs);
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142 | faf07963 | pbrook | int bdrv_media_changed(BlockDriverState *bs);
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143 | faf07963 | pbrook | int bdrv_is_locked(BlockDriverState *bs);
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144 | faf07963 | pbrook | void bdrv_set_locked(BlockDriverState *bs, int locked); |
145 | faf07963 | pbrook | void bdrv_eject(BlockDriverState *bs, int eject_flag); |
146 | faf07963 | pbrook | void bdrv_set_change_cb(BlockDriverState *bs,
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147 | faf07963 | pbrook | void (*change_cb)(void *opaque), void *opaque); |
148 | faf07963 | pbrook | void bdrv_get_format(BlockDriverState *bs, char *buf, int buf_size); |
149 | faf07963 | pbrook | BlockDriverState *bdrv_find(const char *name); |
150 | 51de9760 | aliguori | void bdrv_iterate(void (*it)(void *opaque, BlockDriverState *bs), |
151 | 51de9760 | aliguori | void *opaque);
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152 | faf07963 | pbrook | int bdrv_is_encrypted(BlockDriverState *bs);
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153 | c0f4ce77 | aliguori | int bdrv_key_required(BlockDriverState *bs);
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154 | faf07963 | pbrook | int bdrv_set_key(BlockDriverState *bs, const char *key); |
155 | c0f4ce77 | aliguori | int bdrv_query_missing_keys(void); |
156 | faf07963 | pbrook | void bdrv_iterate_format(void (*it)(void *opaque, const char *name), |
157 | faf07963 | pbrook | void *opaque);
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158 | faf07963 | pbrook | const char *bdrv_get_device_name(BlockDriverState *bs); |
159 | faf07963 | pbrook | int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num,
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160 | faf07963 | pbrook | const uint8_t *buf, int nb_sectors); |
161 | faf07963 | pbrook | int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi);
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162 | faf07963 | pbrook | |
163 | 045df330 | aliguori | const char *bdrv_get_encrypted_filename(BlockDriverState *bs); |
164 | faf07963 | pbrook | void bdrv_get_backing_filename(BlockDriverState *bs,
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165 | faf07963 | pbrook | char *filename, int filename_size); |
166 | faf07963 | pbrook | int bdrv_snapshot_create(BlockDriverState *bs,
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167 | faf07963 | pbrook | QEMUSnapshotInfo *sn_info); |
168 | faf07963 | pbrook | int bdrv_snapshot_goto(BlockDriverState *bs,
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169 | faf07963 | pbrook | const char *snapshot_id); |
170 | faf07963 | pbrook | int bdrv_snapshot_delete(BlockDriverState *bs, const char *snapshot_id); |
171 | faf07963 | pbrook | int bdrv_snapshot_list(BlockDriverState *bs,
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172 | faf07963 | pbrook | QEMUSnapshotInfo **psn_info); |
173 | faf07963 | pbrook | char *bdrv_snapshot_dump(char *buf, int buf_size, QEMUSnapshotInfo *sn); |
174 | faf07963 | pbrook | |
175 | faf07963 | pbrook | char *get_human_readable_size(char *buf, int buf_size, int64_t size); |
176 | faf07963 | pbrook | int path_is_absolute(const char *path); |
177 | faf07963 | pbrook | void path_combine(char *dest, int dest_size, |
178 | faf07963 | pbrook | const char *base_path, |
179 | faf07963 | pbrook | const char *filename); |
180 | faf07963 | pbrook | |
181 | 178e08a5 | aliguori | int bdrv_put_buffer(BlockDriverState *bs, const uint8_t *buf, |
182 | 178e08a5 | aliguori | int64_t pos, int size);
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183 | 178e08a5 | aliguori | |
184 | 178e08a5 | aliguori | int bdrv_get_buffer(BlockDriverState *bs, uint8_t *buf, int64_t pos, int size); |
185 | 178e08a5 | aliguori | |
186 | faf07963 | pbrook | #endif |