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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 | 0e7e1989 | Kevin Wolf | #include "qemu-option.h" |
7 | d15e5465 | Luiz Capitulino | #include "qobject.h" |
8 | a76bab49 | aliguori | |
9 | faf07963 | pbrook | /* block.c */
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10 | faf07963 | pbrook | typedef struct BlockDriver BlockDriver; |
11 | faf07963 | pbrook | |
12 | faf07963 | pbrook | typedef struct BlockDriverInfo { |
13 | faf07963 | pbrook | /* in bytes, 0 if irrelevant */
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14 | faf07963 | pbrook | int cluster_size;
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15 | faf07963 | pbrook | /* offset at which the VM state can be saved (0 if not possible) */
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16 | faf07963 | pbrook | int64_t vm_state_offset; |
17 | faf07963 | pbrook | } BlockDriverInfo; |
18 | faf07963 | pbrook | |
19 | faf07963 | pbrook | typedef struct QEMUSnapshotInfo { |
20 | faf07963 | pbrook | char id_str[128]; /* unique snapshot id */ |
21 | faf07963 | pbrook | /* the following fields are informative. They are not needed for
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22 | faf07963 | pbrook | the consistency of the snapshot */
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23 | faf07963 | pbrook | char name[256]; /* user choosen name */ |
24 | faf07963 | pbrook | uint32_t vm_state_size; /* VM state info size */
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25 | faf07963 | pbrook | uint32_t date_sec; /* UTC date of the snapshot */
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26 | faf07963 | pbrook | uint32_t date_nsec; |
27 | faf07963 | pbrook | uint64_t vm_clock_nsec; /* VM clock relative to boot */
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28 | faf07963 | pbrook | } QEMUSnapshotInfo; |
29 | faf07963 | pbrook | |
30 | faf07963 | pbrook | #define BDRV_O_RDWR 0x0002 |
31 | faf07963 | pbrook | #define BDRV_O_SNAPSHOT 0x0008 /* open the file read only and save writes in a snapshot */ |
32 | faf07963 | pbrook | #define BDRV_O_FILE 0x0010 /* open as a raw file (do not try to |
33 | faf07963 | pbrook | use a disk image format on top of
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34 | faf07963 | pbrook | it (default for
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35 | faf07963 | pbrook | bdrv_file_open()) */
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36 | 9f7965c7 | aliguori | #define BDRV_O_NOCACHE 0x0020 /* do not use the host page cache */ |
37 | 9f7965c7 | aliguori | #define BDRV_O_CACHE_WB 0x0040 /* use write-back caching */ |
38 | 5c6c3a6c | Christoph Hellwig | #define BDRV_O_NATIVE_AIO 0x0080 /* use native AIO instead of the thread pool */ |
39 | b783e409 | Kevin Wolf | #define BDRV_O_NO_BACKING 0x0100 /* don't open the backing file */ |
40 | 9f7965c7 | aliguori | |
41 | 0aa217e4 | Kevin Wolf | #define BDRV_O_CACHE_MASK (BDRV_O_NOCACHE | BDRV_O_CACHE_WB)
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42 | faf07963 | pbrook | |
43 | 6ea44308 | Jan Kiszka | #define BDRV_SECTOR_BITS 9 |
44 | 6ea44308 | Jan Kiszka | #define BDRV_SECTOR_SIZE (1 << BDRV_SECTOR_BITS) |
45 | 6ea44308 | Jan Kiszka | #define BDRV_SECTOR_MASK ~(BDRV_SECTOR_SIZE - 1); |
46 | 6ea44308 | Jan Kiszka | |
47 | d15e5465 | Luiz Capitulino | void bdrv_info_print(Monitor *mon, const QObject *data); |
48 | d15e5465 | Luiz Capitulino | void bdrv_info(Monitor *mon, QObject **ret_data);
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49 | 218a536a | Luiz Capitulino | void bdrv_stats_print(Monitor *mon, const QObject *data); |
50 | 218a536a | Luiz Capitulino | void bdrv_info_stats(Monitor *mon, QObject **ret_data);
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51 | faf07963 | pbrook | |
52 | faf07963 | pbrook | void bdrv_init(void); |
53 | eb852011 | Markus Armbruster | void bdrv_init_with_whitelist(void); |
54 | faf07963 | pbrook | BlockDriver *bdrv_find_format(const char *format_name); |
55 | eb852011 | Markus Armbruster | BlockDriver *bdrv_find_whitelisted_format(const char *format_name); |
56 | 0e7e1989 | Kevin Wolf | int bdrv_create(BlockDriver *drv, const char* filename, |
57 | 0e7e1989 | Kevin Wolf | QEMUOptionParameter *options); |
58 | 5eb45639 | aliguori | int bdrv_create2(BlockDriver *drv,
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59 | 5eb45639 | aliguori | const char *filename, int64_t size_in_sectors, |
60 | 5eb45639 | aliguori | const char *backing_file, const char *backing_format, |
61 | 5eb45639 | aliguori | int flags);
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62 | faf07963 | pbrook | BlockDriverState *bdrv_new(const char *device_name); |
63 | faf07963 | pbrook | void bdrv_delete(BlockDriverState *bs);
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64 | faf07963 | pbrook | int bdrv_file_open(BlockDriverState **pbs, const char *filename, int flags); |
65 | faf07963 | pbrook | int bdrv_open(BlockDriverState *bs, const char *filename, int flags); |
66 | faf07963 | pbrook | int bdrv_open2(BlockDriverState *bs, const char *filename, int flags, |
67 | faf07963 | pbrook | BlockDriver *drv); |
68 | faf07963 | pbrook | void bdrv_close(BlockDriverState *bs);
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69 | e97fc193 | aliguori | int bdrv_check(BlockDriverState *bs);
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70 | faf07963 | pbrook | int bdrv_read(BlockDriverState *bs, int64_t sector_num,
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71 | faf07963 | pbrook | uint8_t *buf, int nb_sectors);
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72 | faf07963 | pbrook | int bdrv_write(BlockDriverState *bs, int64_t sector_num,
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73 | faf07963 | pbrook | const uint8_t *buf, int nb_sectors); |
74 | faf07963 | pbrook | int bdrv_pread(BlockDriverState *bs, int64_t offset,
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75 | faf07963 | pbrook | void *buf, int count); |
76 | faf07963 | pbrook | int bdrv_pwrite(BlockDriverState *bs, int64_t offset,
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77 | faf07963 | pbrook | const void *buf, int count); |
78 | faf07963 | pbrook | int bdrv_truncate(BlockDriverState *bs, int64_t offset);
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79 | faf07963 | pbrook | int64_t bdrv_getlength(BlockDriverState *bs); |
80 | 96b8f136 | ths | void bdrv_get_geometry(BlockDriverState *bs, uint64_t *nb_sectors_ptr);
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81 | f3d54fc4 | aliguori | void bdrv_guess_geometry(BlockDriverState *bs, int *pcyls, int *pheads, int *psecs); |
82 | faf07963 | pbrook | int bdrv_commit(BlockDriverState *bs);
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83 | 756e6736 | Kevin Wolf | int bdrv_change_backing_file(BlockDriverState *bs,
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84 | 756e6736 | Kevin Wolf | const char *backing_file, const char *backing_fmt); |
85 | 5efa9d5a | Anthony Liguori | void bdrv_register(BlockDriver *bdrv);
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86 | 5efa9d5a | Anthony Liguori | |
87 | faf07963 | pbrook | /* async block I/O */
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88 | faf07963 | pbrook | typedef struct BlockDriverAIOCB BlockDriverAIOCB; |
89 | faf07963 | pbrook | typedef void BlockDriverCompletionFunc(void *opaque, int ret); |
90 | 7cd1e32a | lirans@il.ibm.com | typedef void BlockDriverDirtyHandler(BlockDriverState *bs, int64_t sector, |
91 | 7cd1e32a | lirans@il.ibm.com | int sector_num);
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92 | 3b69e4b9 | aliguori | BlockDriverAIOCB *bdrv_aio_readv(BlockDriverState *bs, int64_t sector_num, |
93 | 3b69e4b9 | aliguori | QEMUIOVector *iov, int nb_sectors,
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94 | 3b69e4b9 | aliguori | BlockDriverCompletionFunc *cb, void *opaque);
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95 | 3b69e4b9 | aliguori | BlockDriverAIOCB *bdrv_aio_writev(BlockDriverState *bs, int64_t sector_num, |
96 | 3b69e4b9 | aliguori | QEMUIOVector *iov, int nb_sectors,
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97 | 3b69e4b9 | aliguori | BlockDriverCompletionFunc *cb, void *opaque);
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98 | b2e12bc6 | Christoph Hellwig | BlockDriverAIOCB *bdrv_aio_flush(BlockDriverState *bs, |
99 | b2e12bc6 | Christoph Hellwig | BlockDriverCompletionFunc *cb, void *opaque);
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100 | faf07963 | pbrook | void bdrv_aio_cancel(BlockDriverAIOCB *acb);
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101 | faf07963 | pbrook | |
102 | 40b4f539 | Kevin Wolf | typedef struct BlockRequest { |
103 | 40b4f539 | Kevin Wolf | /* Fields to be filled by multiwrite caller */
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104 | 40b4f539 | Kevin Wolf | int64_t sector; |
105 | 40b4f539 | Kevin Wolf | int nb_sectors;
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106 | 40b4f539 | Kevin Wolf | QEMUIOVector *qiov; |
107 | 40b4f539 | Kevin Wolf | BlockDriverCompletionFunc *cb; |
108 | 40b4f539 | Kevin Wolf | void *opaque;
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109 | 40b4f539 | Kevin Wolf | |
110 | 40b4f539 | Kevin Wolf | /* Filled by multiwrite implementation */
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111 | 40b4f539 | Kevin Wolf | int error;
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112 | 40b4f539 | Kevin Wolf | } BlockRequest; |
113 | 40b4f539 | Kevin Wolf | |
114 | 40b4f539 | Kevin Wolf | int bdrv_aio_multiwrite(BlockDriverState *bs, BlockRequest *reqs,
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115 | 40b4f539 | Kevin Wolf | int num_reqs);
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116 | 40b4f539 | Kevin Wolf | |
117 | 7d780669 | aliguori | /* sg packet commands */
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118 | 221f715d | aliguori | int bdrv_ioctl(BlockDriverState *bs, unsigned long int req, void *buf); |
119 | 221f715d | aliguori | BlockDriverAIOCB *bdrv_aio_ioctl(BlockDriverState *bs, |
120 | 221f715d | aliguori | unsigned long int req, void *buf, |
121 | 221f715d | aliguori | BlockDriverCompletionFunc *cb, void *opaque);
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122 | 7d780669 | aliguori | |
123 | faf07963 | pbrook | /* Ensure contents are flushed to disk. */
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124 | faf07963 | pbrook | void bdrv_flush(BlockDriverState *bs);
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125 | c6ca28d6 | aliguori | void bdrv_flush_all(void); |
126 | c6ca28d6 | aliguori | |
127 | f58c7b35 | ths | int bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors, |
128 | f58c7b35 | ths | int *pnum);
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129 | faf07963 | pbrook | |
130 | faf07963 | pbrook | #define BDRV_TYPE_HD 0 |
131 | faf07963 | pbrook | #define BDRV_TYPE_CDROM 1 |
132 | faf07963 | pbrook | #define BDRV_TYPE_FLOPPY 2 |
133 | faf07963 | pbrook | #define BIOS_ATA_TRANSLATION_AUTO 0 |
134 | faf07963 | pbrook | #define BIOS_ATA_TRANSLATION_NONE 1 |
135 | faf07963 | pbrook | #define BIOS_ATA_TRANSLATION_LBA 2 |
136 | faf07963 | pbrook | #define BIOS_ATA_TRANSLATION_LARGE 3 |
137 | faf07963 | pbrook | #define BIOS_ATA_TRANSLATION_RECHS 4 |
138 | faf07963 | pbrook | |
139 | faf07963 | pbrook | void bdrv_set_geometry_hint(BlockDriverState *bs,
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140 | faf07963 | pbrook | int cyls, int heads, int secs); |
141 | faf07963 | pbrook | void bdrv_set_type_hint(BlockDriverState *bs, int type); |
142 | faf07963 | pbrook | void bdrv_set_translation_hint(BlockDriverState *bs, int translation); |
143 | faf07963 | pbrook | void bdrv_get_geometry_hint(BlockDriverState *bs,
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144 | faf07963 | pbrook | int *pcyls, int *pheads, int *psecs); |
145 | faf07963 | pbrook | int bdrv_get_type_hint(BlockDriverState *bs);
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146 | faf07963 | pbrook | int bdrv_get_translation_hint(BlockDriverState *bs);
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147 | faf07963 | pbrook | int bdrv_is_removable(BlockDriverState *bs);
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148 | faf07963 | pbrook | int bdrv_is_read_only(BlockDriverState *bs);
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149 | 985a03b0 | ths | int bdrv_is_sg(BlockDriverState *bs);
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150 | e900a7b7 | Christoph Hellwig | int bdrv_enable_write_cache(BlockDriverState *bs);
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151 | faf07963 | pbrook | int bdrv_is_inserted(BlockDriverState *bs);
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152 | faf07963 | pbrook | int bdrv_media_changed(BlockDriverState *bs);
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153 | faf07963 | pbrook | int bdrv_is_locked(BlockDriverState *bs);
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154 | faf07963 | pbrook | void bdrv_set_locked(BlockDriverState *bs, int locked); |
155 | aea2a33c | Mark McLoughlin | int bdrv_eject(BlockDriverState *bs, int eject_flag); |
156 | faf07963 | pbrook | void bdrv_set_change_cb(BlockDriverState *bs,
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157 | faf07963 | pbrook | void (*change_cb)(void *opaque), void *opaque); |
158 | faf07963 | pbrook | void bdrv_get_format(BlockDriverState *bs, char *buf, int buf_size); |
159 | faf07963 | pbrook | BlockDriverState *bdrv_find(const char *name); |
160 | 51de9760 | aliguori | void bdrv_iterate(void (*it)(void *opaque, BlockDriverState *bs), |
161 | 51de9760 | aliguori | void *opaque);
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162 | faf07963 | pbrook | int bdrv_is_encrypted(BlockDriverState *bs);
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163 | c0f4ce77 | aliguori | int bdrv_key_required(BlockDriverState *bs);
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164 | faf07963 | pbrook | int bdrv_set_key(BlockDriverState *bs, const char *key); |
165 | c0f4ce77 | aliguori | int bdrv_query_missing_keys(void); |
166 | faf07963 | pbrook | void bdrv_iterate_format(void (*it)(void *opaque, const char *name), |
167 | faf07963 | pbrook | void *opaque);
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168 | faf07963 | pbrook | const char *bdrv_get_device_name(BlockDriverState *bs); |
169 | faf07963 | pbrook | int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num,
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170 | faf07963 | pbrook | const uint8_t *buf, int nb_sectors); |
171 | faf07963 | pbrook | int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi);
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172 | faf07963 | pbrook | |
173 | 045df330 | aliguori | const char *bdrv_get_encrypted_filename(BlockDriverState *bs); |
174 | faf07963 | pbrook | void bdrv_get_backing_filename(BlockDriverState *bs,
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175 | faf07963 | pbrook | char *filename, int filename_size); |
176 | faf07963 | pbrook | int bdrv_snapshot_create(BlockDriverState *bs,
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177 | faf07963 | pbrook | QEMUSnapshotInfo *sn_info); |
178 | faf07963 | pbrook | int bdrv_snapshot_goto(BlockDriverState *bs,
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179 | faf07963 | pbrook | const char *snapshot_id); |
180 | faf07963 | pbrook | int bdrv_snapshot_delete(BlockDriverState *bs, const char *snapshot_id); |
181 | faf07963 | pbrook | int bdrv_snapshot_list(BlockDriverState *bs,
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182 | faf07963 | pbrook | QEMUSnapshotInfo **psn_info); |
183 | faf07963 | pbrook | char *bdrv_snapshot_dump(char *buf, int buf_size, QEMUSnapshotInfo *sn); |
184 | faf07963 | pbrook | |
185 | faf07963 | pbrook | char *get_human_readable_size(char *buf, int buf_size, int64_t size); |
186 | faf07963 | pbrook | int path_is_absolute(const char *path); |
187 | faf07963 | pbrook | void path_combine(char *dest, int dest_size, |
188 | faf07963 | pbrook | const char *base_path, |
189 | faf07963 | pbrook | const char *filename); |
190 | faf07963 | pbrook | |
191 | 45566e9c | Christoph Hellwig | int bdrv_save_vmstate(BlockDriverState *bs, const uint8_t *buf, |
192 | 45566e9c | Christoph Hellwig | int64_t pos, int size);
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193 | 178e08a5 | aliguori | |
194 | 45566e9c | Christoph Hellwig | int bdrv_load_vmstate(BlockDriverState *bs, uint8_t *buf,
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195 | 45566e9c | Christoph Hellwig | int64_t pos, int size);
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196 | 178e08a5 | aliguori | |
197 | 23bd90d2 | Jan Kiszka | #define BDRV_SECTORS_PER_DIRTY_CHUNK 2048 |
198 | 6ea44308 | Jan Kiszka | |
199 | 7cd1e32a | lirans@il.ibm.com | void bdrv_set_dirty_tracking(BlockDriverState *bs, int enable); |
200 | 7cd1e32a | lirans@il.ibm.com | int bdrv_get_dirty(BlockDriverState *bs, int64_t sector);
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201 | a55eb92c | Jan Kiszka | void bdrv_reset_dirty(BlockDriverState *bs, int64_t cur_sector,
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202 | a55eb92c | Jan Kiszka | int nr_sectors);
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203 | faf07963 | pbrook | #endif |