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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 | 2582bfed | Luiz Capitulino | typedef enum { |
48 | 2582bfed | Luiz Capitulino | BDRV_ACTION_REPORT, BDRV_ACTION_IGNORE, BDRV_ACTION_STOP |
49 | 2582bfed | Luiz Capitulino | } BlockMonEventAction; |
50 | 2582bfed | Luiz Capitulino | |
51 | 2582bfed | Luiz Capitulino | void bdrv_mon_event(const BlockDriverState *bdrv, |
52 | 2582bfed | Luiz Capitulino | BlockMonEventAction action, int is_read);
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53 | d15e5465 | Luiz Capitulino | void bdrv_info_print(Monitor *mon, const QObject *data); |
54 | d15e5465 | Luiz Capitulino | void bdrv_info(Monitor *mon, QObject **ret_data);
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55 | 218a536a | Luiz Capitulino | void bdrv_stats_print(Monitor *mon, const QObject *data); |
56 | 218a536a | Luiz Capitulino | void bdrv_info_stats(Monitor *mon, QObject **ret_data);
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57 | faf07963 | pbrook | |
58 | faf07963 | pbrook | void bdrv_init(void); |
59 | eb852011 | Markus Armbruster | void bdrv_init_with_whitelist(void); |
60 | faf07963 | pbrook | BlockDriver *bdrv_find_format(const char *format_name); |
61 | eb852011 | Markus Armbruster | BlockDriver *bdrv_find_whitelisted_format(const char *format_name); |
62 | 0e7e1989 | Kevin Wolf | int bdrv_create(BlockDriver *drv, const char* filename, |
63 | 0e7e1989 | Kevin Wolf | QEMUOptionParameter *options); |
64 | 5eb45639 | aliguori | int bdrv_create2(BlockDriver *drv,
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65 | 5eb45639 | aliguori | const char *filename, int64_t size_in_sectors, |
66 | 5eb45639 | aliguori | const char *backing_file, const char *backing_format, |
67 | 5eb45639 | aliguori | int flags);
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68 | faf07963 | pbrook | BlockDriverState *bdrv_new(const char *device_name); |
69 | faf07963 | pbrook | void bdrv_delete(BlockDriverState *bs);
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70 | faf07963 | pbrook | int bdrv_file_open(BlockDriverState **pbs, const char *filename, int flags); |
71 | faf07963 | pbrook | int bdrv_open(BlockDriverState *bs, const char *filename, int flags); |
72 | faf07963 | pbrook | int bdrv_open2(BlockDriverState *bs, const char *filename, int flags, |
73 | faf07963 | pbrook | BlockDriver *drv); |
74 | faf07963 | pbrook | void bdrv_close(BlockDriverState *bs);
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75 | e97fc193 | aliguori | int bdrv_check(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 | 756e6736 | Kevin Wolf | int bdrv_change_backing_file(BlockDriverState *bs,
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90 | 756e6736 | Kevin Wolf | const char *backing_file, const char *backing_fmt); |
91 | 5efa9d5a | Anthony Liguori | void bdrv_register(BlockDriver *bdrv);
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92 | 5efa9d5a | Anthony Liguori | |
93 | faf07963 | pbrook | /* async block I/O */
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94 | faf07963 | pbrook | typedef struct BlockDriverAIOCB BlockDriverAIOCB; |
95 | faf07963 | pbrook | typedef void BlockDriverCompletionFunc(void *opaque, int ret); |
96 | 7cd1e32a | lirans@il.ibm.com | typedef void BlockDriverDirtyHandler(BlockDriverState *bs, int64_t sector, |
97 | 7cd1e32a | lirans@il.ibm.com | int sector_num);
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98 | 3b69e4b9 | aliguori | BlockDriverAIOCB *bdrv_aio_readv(BlockDriverState *bs, int64_t sector_num, |
99 | 3b69e4b9 | aliguori | QEMUIOVector *iov, int nb_sectors,
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100 | 3b69e4b9 | aliguori | BlockDriverCompletionFunc *cb, void *opaque);
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101 | 3b69e4b9 | aliguori | BlockDriverAIOCB *bdrv_aio_writev(BlockDriverState *bs, int64_t sector_num, |
102 | 3b69e4b9 | aliguori | QEMUIOVector *iov, int nb_sectors,
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103 | 3b69e4b9 | aliguori | BlockDriverCompletionFunc *cb, void *opaque);
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104 | b2e12bc6 | Christoph Hellwig | BlockDriverAIOCB *bdrv_aio_flush(BlockDriverState *bs, |
105 | b2e12bc6 | Christoph Hellwig | 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 | 40b4f539 | Kevin Wolf | typedef struct BlockRequest { |
109 | 40b4f539 | Kevin Wolf | /* Fields to be filled by multiwrite caller */
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110 | 40b4f539 | Kevin Wolf | int64_t sector; |
111 | 40b4f539 | Kevin Wolf | int nb_sectors;
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112 | 40b4f539 | Kevin Wolf | QEMUIOVector *qiov; |
113 | 40b4f539 | Kevin Wolf | BlockDriverCompletionFunc *cb; |
114 | 40b4f539 | Kevin Wolf | void *opaque;
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115 | 40b4f539 | Kevin Wolf | |
116 | 40b4f539 | Kevin Wolf | /* Filled by multiwrite implementation */
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117 | 40b4f539 | Kevin Wolf | int error;
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118 | 40b4f539 | Kevin Wolf | } BlockRequest; |
119 | 40b4f539 | Kevin Wolf | |
120 | 40b4f539 | Kevin Wolf | int bdrv_aio_multiwrite(BlockDriverState *bs, BlockRequest *reqs,
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121 | 40b4f539 | Kevin Wolf | int num_reqs);
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122 | 40b4f539 | Kevin Wolf | |
123 | 7d780669 | aliguori | /* sg packet commands */
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124 | 221f715d | aliguori | int bdrv_ioctl(BlockDriverState *bs, unsigned long int req, void *buf); |
125 | 221f715d | aliguori | BlockDriverAIOCB *bdrv_aio_ioctl(BlockDriverState *bs, |
126 | 221f715d | aliguori | unsigned long int req, void *buf, |
127 | 221f715d | aliguori | BlockDriverCompletionFunc *cb, void *opaque);
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128 | 7d780669 | aliguori | |
129 | faf07963 | pbrook | /* Ensure contents are flushed to disk. */
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130 | faf07963 | pbrook | void bdrv_flush(BlockDriverState *bs);
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131 | c6ca28d6 | aliguori | void bdrv_flush_all(void); |
132 | c6ca28d6 | aliguori | |
133 | f58c7b35 | ths | int bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors, |
134 | f58c7b35 | ths | int *pnum);
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135 | faf07963 | pbrook | |
136 | faf07963 | pbrook | #define BDRV_TYPE_HD 0 |
137 | faf07963 | pbrook | #define BDRV_TYPE_CDROM 1 |
138 | faf07963 | pbrook | #define BDRV_TYPE_FLOPPY 2 |
139 | faf07963 | pbrook | #define BIOS_ATA_TRANSLATION_AUTO 0 |
140 | faf07963 | pbrook | #define BIOS_ATA_TRANSLATION_NONE 1 |
141 | faf07963 | pbrook | #define BIOS_ATA_TRANSLATION_LBA 2 |
142 | faf07963 | pbrook | #define BIOS_ATA_TRANSLATION_LARGE 3 |
143 | faf07963 | pbrook | #define BIOS_ATA_TRANSLATION_RECHS 4 |
144 | faf07963 | pbrook | |
145 | faf07963 | pbrook | void bdrv_set_geometry_hint(BlockDriverState *bs,
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146 | faf07963 | pbrook | int cyls, int heads, int secs); |
147 | faf07963 | pbrook | void bdrv_set_type_hint(BlockDriverState *bs, int type); |
148 | faf07963 | pbrook | void bdrv_set_translation_hint(BlockDriverState *bs, int translation); |
149 | faf07963 | pbrook | void bdrv_get_geometry_hint(BlockDriverState *bs,
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150 | faf07963 | pbrook | int *pcyls, int *pheads, int *psecs); |
151 | faf07963 | pbrook | int bdrv_get_type_hint(BlockDriverState *bs);
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152 | faf07963 | pbrook | int bdrv_get_translation_hint(BlockDriverState *bs);
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153 | faf07963 | pbrook | int bdrv_is_removable(BlockDriverState *bs);
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154 | faf07963 | pbrook | int bdrv_is_read_only(BlockDriverState *bs);
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155 | 985a03b0 | ths | int bdrv_is_sg(BlockDriverState *bs);
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156 | e900a7b7 | Christoph Hellwig | int bdrv_enable_write_cache(BlockDriverState *bs);
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157 | faf07963 | pbrook | int bdrv_is_inserted(BlockDriverState *bs);
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158 | faf07963 | pbrook | int bdrv_media_changed(BlockDriverState *bs);
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159 | faf07963 | pbrook | int bdrv_is_locked(BlockDriverState *bs);
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160 | faf07963 | pbrook | void bdrv_set_locked(BlockDriverState *bs, int locked); |
161 | aea2a33c | Mark McLoughlin | int bdrv_eject(BlockDriverState *bs, int eject_flag); |
162 | faf07963 | pbrook | void bdrv_set_change_cb(BlockDriverState *bs,
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163 | faf07963 | pbrook | void (*change_cb)(void *opaque), void *opaque); |
164 | faf07963 | pbrook | void bdrv_get_format(BlockDriverState *bs, char *buf, int buf_size); |
165 | faf07963 | pbrook | BlockDriverState *bdrv_find(const char *name); |
166 | 51de9760 | aliguori | void bdrv_iterate(void (*it)(void *opaque, BlockDriverState *bs), |
167 | 51de9760 | aliguori | void *opaque);
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168 | faf07963 | pbrook | int bdrv_is_encrypted(BlockDriverState *bs);
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169 | c0f4ce77 | aliguori | int bdrv_key_required(BlockDriverState *bs);
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170 | faf07963 | pbrook | int bdrv_set_key(BlockDriverState *bs, const char *key); |
171 | c0f4ce77 | aliguori | int bdrv_query_missing_keys(void); |
172 | faf07963 | pbrook | void bdrv_iterate_format(void (*it)(void *opaque, const char *name), |
173 | faf07963 | pbrook | void *opaque);
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174 | faf07963 | pbrook | const char *bdrv_get_device_name(BlockDriverState *bs); |
175 | faf07963 | pbrook | int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num,
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176 | faf07963 | pbrook | const uint8_t *buf, int nb_sectors); |
177 | faf07963 | pbrook | int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi);
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178 | faf07963 | pbrook | |
179 | 045df330 | aliguori | const char *bdrv_get_encrypted_filename(BlockDriverState *bs); |
180 | faf07963 | pbrook | void bdrv_get_backing_filename(BlockDriverState *bs,
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181 | faf07963 | pbrook | char *filename, int filename_size); |
182 | faf07963 | pbrook | int bdrv_snapshot_create(BlockDriverState *bs,
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183 | faf07963 | pbrook | QEMUSnapshotInfo *sn_info); |
184 | faf07963 | pbrook | int bdrv_snapshot_goto(BlockDriverState *bs,
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185 | faf07963 | pbrook | const char *snapshot_id); |
186 | faf07963 | pbrook | int bdrv_snapshot_delete(BlockDriverState *bs, const char *snapshot_id); |
187 | faf07963 | pbrook | int bdrv_snapshot_list(BlockDriverState *bs,
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188 | faf07963 | pbrook | QEMUSnapshotInfo **psn_info); |
189 | faf07963 | pbrook | char *bdrv_snapshot_dump(char *buf, int buf_size, QEMUSnapshotInfo *sn); |
190 | faf07963 | pbrook | |
191 | faf07963 | pbrook | char *get_human_readable_size(char *buf, int buf_size, int64_t size); |
192 | faf07963 | pbrook | int path_is_absolute(const char *path); |
193 | faf07963 | pbrook | void path_combine(char *dest, int dest_size, |
194 | faf07963 | pbrook | const char *base_path, |
195 | faf07963 | pbrook | const char *filename); |
196 | faf07963 | pbrook | |
197 | 45566e9c | Christoph Hellwig | int bdrv_save_vmstate(BlockDriverState *bs, const uint8_t *buf, |
198 | 45566e9c | Christoph Hellwig | int64_t pos, int size);
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199 | 178e08a5 | aliguori | |
200 | 45566e9c | Christoph Hellwig | int bdrv_load_vmstate(BlockDriverState *bs, uint8_t *buf,
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201 | 45566e9c | Christoph Hellwig | int64_t pos, int size);
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202 | 178e08a5 | aliguori | |
203 | 23bd90d2 | Jan Kiszka | #define BDRV_SECTORS_PER_DIRTY_CHUNK 2048 |
204 | 6ea44308 | Jan Kiszka | |
205 | 7cd1e32a | lirans@il.ibm.com | void bdrv_set_dirty_tracking(BlockDriverState *bs, int enable); |
206 | 7cd1e32a | lirans@il.ibm.com | int bdrv_get_dirty(BlockDriverState *bs, int64_t sector);
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207 | a55eb92c | Jan Kiszka | void bdrv_reset_dirty(BlockDriverState *bs, int64_t cur_sector,
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208 | a55eb92c | Jan Kiszka | int nr_sectors);
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209 | aaa0eb75 | Liran Schour | int64_t bdrv_get_dirty_count(BlockDriverState *bs); |
210 | faf07963 | pbrook | #endif |