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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 | 9f7965c7 | aliguori | #define BDRV_O_NOCACHE 0x0020 /* do not use the host page cache */ |
33 | 9f7965c7 | aliguori | #define BDRV_O_CACHE_WB 0x0040 /* use write-back caching */ |
34 | 5c6c3a6c | Christoph Hellwig | #define BDRV_O_NATIVE_AIO 0x0080 /* use native AIO instead of the thread pool */ |
35 | b783e409 | Kevin Wolf | #define BDRV_O_NO_BACKING 0x0100 /* don't open the backing file */ |
36 | 016f5cf6 | Alexander Graf | #define BDRV_O_NO_FLUSH 0x0200 /* disable flushing on this disk */ |
37 | 9f7965c7 | aliguori | |
38 | 0aa217e4 | Kevin Wolf | #define BDRV_O_CACHE_MASK (BDRV_O_NOCACHE | BDRV_O_CACHE_WB)
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39 | faf07963 | pbrook | |
40 | 6ea44308 | Jan Kiszka | #define BDRV_SECTOR_BITS 9 |
41 | c63782cb | Jes Sorensen | #define BDRV_SECTOR_SIZE (1ULL << BDRV_SECTOR_BITS) |
42 | 3abbc4d9 | Stefan Hajnoczi | #define BDRV_SECTOR_MASK ~(BDRV_SECTOR_SIZE - 1) |
43 | 6ea44308 | Jan Kiszka | |
44 | 2582bfed | Luiz Capitulino | typedef enum { |
45 | abd7f68d | Markus Armbruster | BLOCK_ERR_REPORT, BLOCK_ERR_IGNORE, BLOCK_ERR_STOP_ENOSPC, |
46 | abd7f68d | Markus Armbruster | BLOCK_ERR_STOP_ANY |
47 | abd7f68d | Markus Armbruster | } BlockErrorAction; |
48 | abd7f68d | Markus Armbruster | |
49 | abd7f68d | Markus Armbruster | typedef enum { |
50 | 2582bfed | Luiz Capitulino | BDRV_ACTION_REPORT, BDRV_ACTION_IGNORE, BDRV_ACTION_STOP |
51 | 2582bfed | Luiz Capitulino | } BlockMonEventAction; |
52 | 2582bfed | Luiz Capitulino | |
53 | 2582bfed | Luiz Capitulino | void bdrv_mon_event(const BlockDriverState *bdrv, |
54 | 2582bfed | Luiz Capitulino | BlockMonEventAction action, int is_read);
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55 | d15e5465 | Luiz Capitulino | void bdrv_info_print(Monitor *mon, const QObject *data); |
56 | d15e5465 | Luiz Capitulino | void bdrv_info(Monitor *mon, QObject **ret_data);
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57 | 218a536a | Luiz Capitulino | void bdrv_stats_print(Monitor *mon, const QObject *data); |
58 | 218a536a | Luiz Capitulino | void bdrv_info_stats(Monitor *mon, QObject **ret_data);
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59 | faf07963 | pbrook | |
60 | faf07963 | pbrook | void bdrv_init(void); |
61 | eb852011 | Markus Armbruster | void bdrv_init_with_whitelist(void); |
62 | b50cbabc | MORITA Kazutaka | BlockDriver *bdrv_find_protocol(const char *filename); |
63 | faf07963 | pbrook | BlockDriver *bdrv_find_format(const char *format_name); |
64 | eb852011 | Markus Armbruster | BlockDriver *bdrv_find_whitelisted_format(const char *format_name); |
65 | 0e7e1989 | Kevin Wolf | int bdrv_create(BlockDriver *drv, const char* filename, |
66 | 0e7e1989 | Kevin Wolf | QEMUOptionParameter *options); |
67 | 84a12e66 | Christoph Hellwig | int bdrv_create_file(const char* filename, QEMUOptionParameter *options); |
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 | d6e9098e | Kevin Wolf | int bdrv_open(BlockDriverState *bs, const char *filename, int flags, |
72 | d6e9098e | Kevin Wolf | BlockDriver *drv); |
73 | faf07963 | pbrook | void bdrv_close(BlockDriverState *bs);
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74 | e97fc193 | aliguori | int bdrv_check(BlockDriverState *bs);
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75 | faf07963 | pbrook | int bdrv_read(BlockDriverState *bs, int64_t sector_num,
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76 | faf07963 | pbrook | uint8_t *buf, int nb_sectors);
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77 | faf07963 | pbrook | int bdrv_write(BlockDriverState *bs, int64_t sector_num,
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78 | faf07963 | pbrook | const uint8_t *buf, int nb_sectors); |
79 | faf07963 | pbrook | int bdrv_pread(BlockDriverState *bs, int64_t offset,
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80 | faf07963 | pbrook | void *buf, int count); |
81 | faf07963 | pbrook | int bdrv_pwrite(BlockDriverState *bs, int64_t offset,
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82 | faf07963 | pbrook | const void *buf, int count); |
83 | f08145fe | Kevin Wolf | int bdrv_pwrite_sync(BlockDriverState *bs, int64_t offset,
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84 | f08145fe | Kevin Wolf | const void *buf, int count); |
85 | f08145fe | Kevin Wolf | int bdrv_write_sync(BlockDriverState *bs, int64_t sector_num,
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86 | f08145fe | Kevin Wolf | const uint8_t *buf, int nb_sectors); |
87 | faf07963 | pbrook | int bdrv_truncate(BlockDriverState *bs, int64_t offset);
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88 | faf07963 | pbrook | int64_t bdrv_getlength(BlockDriverState *bs); |
89 | 96b8f136 | ths | void bdrv_get_geometry(BlockDriverState *bs, uint64_t *nb_sectors_ptr);
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90 | f3d54fc4 | aliguori | void bdrv_guess_geometry(BlockDriverState *bs, int *pcyls, int *pheads, int *psecs); |
91 | faf07963 | pbrook | int bdrv_commit(BlockDriverState *bs);
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92 | 6ab4b5ab | Markus Armbruster | void bdrv_commit_all(void); |
93 | 756e6736 | Kevin Wolf | int bdrv_change_backing_file(BlockDriverState *bs,
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94 | 756e6736 | Kevin Wolf | const char *backing_file, const char *backing_fmt); |
95 | 5efa9d5a | Anthony Liguori | void bdrv_register(BlockDriver *bdrv);
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96 | 5efa9d5a | Anthony Liguori | |
97 | faf07963 | pbrook | /* async block I/O */
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98 | faf07963 | pbrook | typedef struct BlockDriverAIOCB BlockDriverAIOCB; |
99 | faf07963 | pbrook | typedef void BlockDriverCompletionFunc(void *opaque, int ret); |
100 | 7cd1e32a | lirans@il.ibm.com | typedef void BlockDriverDirtyHandler(BlockDriverState *bs, int64_t sector, |
101 | 7cd1e32a | lirans@il.ibm.com | int sector_num);
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102 | 3b69e4b9 | aliguori | BlockDriverAIOCB *bdrv_aio_readv(BlockDriverState *bs, int64_t sector_num, |
103 | 3b69e4b9 | aliguori | QEMUIOVector *iov, int nb_sectors,
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104 | 3b69e4b9 | aliguori | BlockDriverCompletionFunc *cb, void *opaque);
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105 | 3b69e4b9 | aliguori | BlockDriverAIOCB *bdrv_aio_writev(BlockDriverState *bs, int64_t sector_num, |
106 | 3b69e4b9 | aliguori | QEMUIOVector *iov, int nb_sectors,
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107 | 3b69e4b9 | aliguori | BlockDriverCompletionFunc *cb, void *opaque);
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108 | b2e12bc6 | Christoph Hellwig | BlockDriverAIOCB *bdrv_aio_flush(BlockDriverState *bs, |
109 | b2e12bc6 | Christoph Hellwig | BlockDriverCompletionFunc *cb, void *opaque);
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110 | faf07963 | pbrook | void bdrv_aio_cancel(BlockDriverAIOCB *acb);
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111 | faf07963 | pbrook | |
112 | 40b4f539 | Kevin Wolf | typedef struct BlockRequest { |
113 | 40b4f539 | Kevin Wolf | /* Fields to be filled by multiwrite caller */
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114 | 40b4f539 | Kevin Wolf | int64_t sector; |
115 | 40b4f539 | Kevin Wolf | int nb_sectors;
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116 | 40b4f539 | Kevin Wolf | QEMUIOVector *qiov; |
117 | 40b4f539 | Kevin Wolf | BlockDriverCompletionFunc *cb; |
118 | 40b4f539 | Kevin Wolf | void *opaque;
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119 | 40b4f539 | Kevin Wolf | |
120 | 40b4f539 | Kevin Wolf | /* Filled by multiwrite implementation */
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121 | 40b4f539 | Kevin Wolf | int error;
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122 | 40b4f539 | Kevin Wolf | } BlockRequest; |
123 | 40b4f539 | Kevin Wolf | |
124 | 40b4f539 | Kevin Wolf | int bdrv_aio_multiwrite(BlockDriverState *bs, BlockRequest *reqs,
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125 | 40b4f539 | Kevin Wolf | int num_reqs);
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126 | 40b4f539 | Kevin Wolf | |
127 | 7d780669 | aliguori | /* sg packet commands */
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128 | 221f715d | aliguori | int bdrv_ioctl(BlockDriverState *bs, unsigned long int req, void *buf); |
129 | 221f715d | aliguori | BlockDriverAIOCB *bdrv_aio_ioctl(BlockDriverState *bs, |
130 | 221f715d | aliguori | unsigned long int req, void *buf, |
131 | 221f715d | aliguori | BlockDriverCompletionFunc *cb, void *opaque);
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132 | 7d780669 | aliguori | |
133 | faf07963 | pbrook | /* Ensure contents are flushed to disk. */
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134 | faf07963 | pbrook | void bdrv_flush(BlockDriverState *bs);
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135 | c6ca28d6 | aliguori | void bdrv_flush_all(void); |
136 | 2bc93fed | MORITA Kazutaka | void bdrv_close_all(void); |
137 | c6ca28d6 | aliguori | |
138 | f2feebbd | Kevin Wolf | int bdrv_has_zero_init(BlockDriverState *bs);
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139 | f58c7b35 | ths | int bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors, |
140 | f58c7b35 | ths | int *pnum);
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141 | faf07963 | pbrook | |
142 | faf07963 | pbrook | #define BDRV_TYPE_HD 0 |
143 | faf07963 | pbrook | #define BDRV_TYPE_CDROM 1 |
144 | faf07963 | pbrook | #define BDRV_TYPE_FLOPPY 2 |
145 | faf07963 | pbrook | #define BIOS_ATA_TRANSLATION_AUTO 0 |
146 | faf07963 | pbrook | #define BIOS_ATA_TRANSLATION_NONE 1 |
147 | faf07963 | pbrook | #define BIOS_ATA_TRANSLATION_LBA 2 |
148 | faf07963 | pbrook | #define BIOS_ATA_TRANSLATION_LARGE 3 |
149 | faf07963 | pbrook | #define BIOS_ATA_TRANSLATION_RECHS 4 |
150 | faf07963 | pbrook | |
151 | faf07963 | pbrook | void bdrv_set_geometry_hint(BlockDriverState *bs,
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152 | faf07963 | pbrook | int cyls, int heads, int secs); |
153 | faf07963 | pbrook | void bdrv_set_type_hint(BlockDriverState *bs, int type); |
154 | faf07963 | pbrook | void bdrv_set_translation_hint(BlockDriverState *bs, int translation); |
155 | faf07963 | pbrook | void bdrv_get_geometry_hint(BlockDriverState *bs,
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156 | faf07963 | pbrook | int *pcyls, int *pheads, int *psecs); |
157 | faf07963 | pbrook | int bdrv_get_type_hint(BlockDriverState *bs);
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158 | faf07963 | pbrook | int bdrv_get_translation_hint(BlockDriverState *bs);
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159 | abd7f68d | Markus Armbruster | void bdrv_set_on_error(BlockDriverState *bs, BlockErrorAction on_read_error,
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160 | abd7f68d | Markus Armbruster | BlockErrorAction on_write_error); |
161 | abd7f68d | Markus Armbruster | BlockErrorAction bdrv_get_on_error(BlockDriverState *bs, int is_read);
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162 | faf07963 | pbrook | int bdrv_is_removable(BlockDriverState *bs);
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163 | faf07963 | pbrook | int bdrv_is_read_only(BlockDriverState *bs);
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164 | 985a03b0 | ths | int bdrv_is_sg(BlockDriverState *bs);
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165 | e900a7b7 | Christoph Hellwig | int bdrv_enable_write_cache(BlockDriverState *bs);
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166 | faf07963 | pbrook | int bdrv_is_inserted(BlockDriverState *bs);
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167 | faf07963 | pbrook | int bdrv_media_changed(BlockDriverState *bs);
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168 | faf07963 | pbrook | int bdrv_is_locked(BlockDriverState *bs);
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169 | faf07963 | pbrook | void bdrv_set_locked(BlockDriverState *bs, int locked); |
170 | aea2a33c | Mark McLoughlin | int bdrv_eject(BlockDriverState *bs, int eject_flag); |
171 | faf07963 | pbrook | void bdrv_set_change_cb(BlockDriverState *bs,
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172 | faf07963 | pbrook | void (*change_cb)(void *opaque), void *opaque); |
173 | faf07963 | pbrook | void bdrv_get_format(BlockDriverState *bs, char *buf, int buf_size); |
174 | faf07963 | pbrook | BlockDriverState *bdrv_find(const char *name); |
175 | 2f399b0a | Markus Armbruster | BlockDriverState *bdrv_next(BlockDriverState *bs); |
176 | 51de9760 | aliguori | void bdrv_iterate(void (*it)(void *opaque, BlockDriverState *bs), |
177 | 51de9760 | aliguori | void *opaque);
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178 | faf07963 | pbrook | int bdrv_is_encrypted(BlockDriverState *bs);
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179 | c0f4ce77 | aliguori | int bdrv_key_required(BlockDriverState *bs);
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180 | faf07963 | pbrook | int bdrv_set_key(BlockDriverState *bs, const char *key); |
181 | c0f4ce77 | aliguori | int bdrv_query_missing_keys(void); |
182 | faf07963 | pbrook | void bdrv_iterate_format(void (*it)(void *opaque, const char *name), |
183 | faf07963 | pbrook | void *opaque);
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184 | faf07963 | pbrook | const char *bdrv_get_device_name(BlockDriverState *bs); |
185 | faf07963 | pbrook | int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num,
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186 | faf07963 | pbrook | const uint8_t *buf, int nb_sectors); |
187 | faf07963 | pbrook | int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi);
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188 | faf07963 | pbrook | |
189 | 045df330 | aliguori | const char *bdrv_get_encrypted_filename(BlockDriverState *bs); |
190 | faf07963 | pbrook | void bdrv_get_backing_filename(BlockDriverState *bs,
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191 | faf07963 | pbrook | char *filename, int filename_size); |
192 | feeee5ac | Miguel Di Ciurcio Filho | int bdrv_can_snapshot(BlockDriverState *bs);
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193 | faf07963 | pbrook | int bdrv_snapshot_create(BlockDriverState *bs,
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194 | faf07963 | pbrook | QEMUSnapshotInfo *sn_info); |
195 | faf07963 | pbrook | int bdrv_snapshot_goto(BlockDriverState *bs,
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196 | faf07963 | pbrook | const char *snapshot_id); |
197 | faf07963 | pbrook | int bdrv_snapshot_delete(BlockDriverState *bs, const char *snapshot_id); |
198 | faf07963 | pbrook | int bdrv_snapshot_list(BlockDriverState *bs,
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199 | faf07963 | pbrook | QEMUSnapshotInfo **psn_info); |
200 | faf07963 | pbrook | char *bdrv_snapshot_dump(char *buf, int buf_size, QEMUSnapshotInfo *sn); |
201 | faf07963 | pbrook | |
202 | faf07963 | pbrook | char *get_human_readable_size(char *buf, int buf_size, int64_t size); |
203 | faf07963 | pbrook | int path_is_absolute(const char *path); |
204 | faf07963 | pbrook | void path_combine(char *dest, int dest_size, |
205 | faf07963 | pbrook | const char *base_path, |
206 | faf07963 | pbrook | const char *filename); |
207 | faf07963 | pbrook | |
208 | 45566e9c | Christoph Hellwig | int bdrv_save_vmstate(BlockDriverState *bs, const uint8_t *buf, |
209 | 45566e9c | Christoph Hellwig | int64_t pos, int size);
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210 | 178e08a5 | aliguori | |
211 | 45566e9c | Christoph Hellwig | int bdrv_load_vmstate(BlockDriverState *bs, uint8_t *buf,
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212 | 45566e9c | Christoph Hellwig | int64_t pos, int size);
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213 | 178e08a5 | aliguori | |
214 | 23bd90d2 | Jan Kiszka | #define BDRV_SECTORS_PER_DIRTY_CHUNK 2048 |
215 | 6ea44308 | Jan Kiszka | |
216 | 7cd1e32a | lirans@il.ibm.com | void bdrv_set_dirty_tracking(BlockDriverState *bs, int enable); |
217 | 7cd1e32a | lirans@il.ibm.com | int bdrv_get_dirty(BlockDriverState *bs, int64_t sector);
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218 | a55eb92c | Jan Kiszka | void bdrv_reset_dirty(BlockDriverState *bs, int64_t cur_sector,
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219 | a55eb92c | Jan Kiszka | int nr_sectors);
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220 | aaa0eb75 | Liran Schour | int64_t bdrv_get_dirty_count(BlockDriverState *bs); |
221 | 8b9b0cc2 | Kevin Wolf | |
222 | 8b9b0cc2 | Kevin Wolf | |
223 | 8b9b0cc2 | Kevin Wolf | typedef enum { |
224 | 8252278a | Kevin Wolf | BLKDBG_L1_UPDATE, |
225 | 8252278a | Kevin Wolf | |
226 | 8252278a | Kevin Wolf | BLKDBG_L1_GROW_ALLOC_TABLE, |
227 | 8252278a | Kevin Wolf | BLKDBG_L1_GROW_WRITE_TABLE, |
228 | 8252278a | Kevin Wolf | BLKDBG_L1_GROW_ACTIVATE_TABLE, |
229 | 8252278a | Kevin Wolf | |
230 | 8252278a | Kevin Wolf | BLKDBG_L2_LOAD, |
231 | 8252278a | Kevin Wolf | BLKDBG_L2_UPDATE, |
232 | 8252278a | Kevin Wolf | BLKDBG_L2_UPDATE_COMPRESSED, |
233 | 8252278a | Kevin Wolf | BLKDBG_L2_ALLOC_COW_READ, |
234 | 8252278a | Kevin Wolf | BLKDBG_L2_ALLOC_WRITE, |
235 | 8252278a | Kevin Wolf | |
236 | 8252278a | Kevin Wolf | BLKDBG_READ, |
237 | 8252278a | Kevin Wolf | BLKDBG_READ_AIO, |
238 | 8252278a | Kevin Wolf | BLKDBG_READ_BACKING, |
239 | 8252278a | Kevin Wolf | BLKDBG_READ_BACKING_AIO, |
240 | 8252278a | Kevin Wolf | BLKDBG_READ_COMPRESSED, |
241 | 8252278a | Kevin Wolf | |
242 | 8252278a | Kevin Wolf | BLKDBG_WRITE_AIO, |
243 | 8252278a | Kevin Wolf | BLKDBG_WRITE_COMPRESSED, |
244 | 8252278a | Kevin Wolf | |
245 | 8252278a | Kevin Wolf | BLKDBG_VMSTATE_LOAD, |
246 | 8252278a | Kevin Wolf | BLKDBG_VMSTATE_SAVE, |
247 | 8252278a | Kevin Wolf | |
248 | 8252278a | Kevin Wolf | BLKDBG_COW_READ, |
249 | 8252278a | Kevin Wolf | BLKDBG_COW_WRITE, |
250 | 8252278a | Kevin Wolf | |
251 | 8252278a | Kevin Wolf | BLKDBG_REFTABLE_LOAD, |
252 | 8252278a | Kevin Wolf | BLKDBG_REFTABLE_GROW, |
253 | 8252278a | Kevin Wolf | |
254 | 8252278a | Kevin Wolf | BLKDBG_REFBLOCK_LOAD, |
255 | 8252278a | Kevin Wolf | BLKDBG_REFBLOCK_UPDATE, |
256 | 8252278a | Kevin Wolf | BLKDBG_REFBLOCK_UPDATE_PART, |
257 | 8252278a | Kevin Wolf | BLKDBG_REFBLOCK_ALLOC, |
258 | 8252278a | Kevin Wolf | BLKDBG_REFBLOCK_ALLOC_HOOKUP, |
259 | 8252278a | Kevin Wolf | BLKDBG_REFBLOCK_ALLOC_WRITE, |
260 | 8252278a | Kevin Wolf | BLKDBG_REFBLOCK_ALLOC_WRITE_BLOCKS, |
261 | 8252278a | Kevin Wolf | BLKDBG_REFBLOCK_ALLOC_WRITE_TABLE, |
262 | 8252278a | Kevin Wolf | BLKDBG_REFBLOCK_ALLOC_SWITCH_TABLE, |
263 | 8252278a | Kevin Wolf | |
264 | 8252278a | Kevin Wolf | BLKDBG_CLUSTER_ALLOC, |
265 | 8252278a | Kevin Wolf | BLKDBG_CLUSTER_ALLOC_BYTES, |
266 | 8252278a | Kevin Wolf | BLKDBG_CLUSTER_FREE, |
267 | 8252278a | Kevin Wolf | |
268 | 8b9b0cc2 | Kevin Wolf | BLKDBG_EVENT_MAX, |
269 | 8b9b0cc2 | Kevin Wolf | } BlkDebugEvent; |
270 | 8b9b0cc2 | Kevin Wolf | |
271 | 8b9b0cc2 | Kevin Wolf | #define BLKDBG_EVENT(bs, evt) bdrv_debug_event(bs, evt)
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272 | 8b9b0cc2 | Kevin Wolf | void bdrv_debug_event(BlockDriverState *bs, BlkDebugEvent event);
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273 | 8b9b0cc2 | Kevin Wolf | |
274 | faf07963 | pbrook | #endif |