5 #include "qemu-common.h"
6 #include "qemu-option.h"
10 typedef struct BlockDriver BlockDriver
;
12 typedef struct BlockDriverInfo
{
13 /* in bytes, 0 if irrelevant */
15 /* offset at which the VM state can be saved (0 if not possible) */
16 int64_t vm_state_offset
;
19 typedef struct QEMUSnapshotInfo
{
20 char id_str
[128]; /* unique snapshot id */
21 /* the following fields are informative. They are not needed for
22 the consistency of the snapshot */
23 char name
[256]; /* user choosen name */
24 uint32_t vm_state_size
; /* VM state info size */
25 uint32_t date_sec
; /* UTC date of the snapshot */
27 uint64_t vm_clock_nsec
; /* VM clock relative to boot */
30 #define BDRV_O_RDWR 0x0002
31 #define BDRV_O_SNAPSHOT 0x0008 /* open the file read only and save writes in a snapshot */
32 #define BDRV_O_NOCACHE 0x0020 /* do not use the host page cache */
33 #define BDRV_O_CACHE_WB 0x0040 /* use write-back caching */
34 #define BDRV_O_NATIVE_AIO 0x0080 /* use native AIO instead of the thread pool */
35 #define BDRV_O_NO_BACKING 0x0100 /* don't open the backing file */
36 #define BDRV_O_NO_FLUSH 0x0200 /* disable flushing on this disk */
38 #define BDRV_O_CACHE_MASK (BDRV_O_NOCACHE | BDRV_O_CACHE_WB)
40 #define BDRV_SECTOR_BITS 9
41 #define BDRV_SECTOR_SIZE (1 << BDRV_SECTOR_BITS)
42 #define BDRV_SECTOR_MASK ~(BDRV_SECTOR_SIZE - 1)
45 BDRV_ACTION_REPORT
, BDRV_ACTION_IGNORE
, BDRV_ACTION_STOP
46 } BlockMonEventAction
;
48 void bdrv_mon_event(const BlockDriverState
*bdrv
,
49 BlockMonEventAction action
, int is_read
);
50 void bdrv_info_print(Monitor
*mon
, const QObject
*data
);
51 void bdrv_info(Monitor
*mon
, QObject
**ret_data
);
52 void bdrv_stats_print(Monitor
*mon
, const QObject
*data
);
53 void bdrv_info_stats(Monitor
*mon
, QObject
**ret_data
);
56 void bdrv_init_with_whitelist(void);
57 BlockDriver
*bdrv_find_protocol(const char *filename
);
58 BlockDriver
*bdrv_find_format(const char *format_name
);
59 BlockDriver
*bdrv_find_whitelisted_format(const char *format_name
);
60 int bdrv_create(BlockDriver
*drv
, const char* filename
,
61 QEMUOptionParameter
*options
);
62 int bdrv_create_file(const char* filename
, QEMUOptionParameter
*options
);
63 BlockDriverState
*bdrv_new(const char *device_name
);
64 void bdrv_delete(BlockDriverState
*bs
);
65 int bdrv_file_open(BlockDriverState
**pbs
, const char *filename
, int flags
);
66 int bdrv_open(BlockDriverState
*bs
, const char *filename
, int flags
,
68 void bdrv_close(BlockDriverState
*bs
);
69 int bdrv_check(BlockDriverState
*bs
);
70 int bdrv_read(BlockDriverState
*bs
, int64_t sector_num
,
71 uint8_t *buf
, int nb_sectors
);
72 int bdrv_write(BlockDriverState
*bs
, int64_t sector_num
,
73 const uint8_t *buf
, int nb_sectors
);
74 int bdrv_pread(BlockDriverState
*bs
, int64_t offset
,
75 void *buf
, int count
);
76 int bdrv_pwrite(BlockDriverState
*bs
, int64_t offset
,
77 const void *buf
, int count
);
78 int bdrv_truncate(BlockDriverState
*bs
, int64_t offset
);
79 int64_t bdrv_getlength(BlockDriverState
*bs
);
80 void bdrv_get_geometry(BlockDriverState
*bs
, uint64_t *nb_sectors_ptr
);
81 void bdrv_guess_geometry(BlockDriverState
*bs
, int *pcyls
, int *pheads
, int *psecs
);
82 int bdrv_commit(BlockDriverState
*bs
);
83 int bdrv_change_backing_file(BlockDriverState
*bs
,
84 const char *backing_file
, const char *backing_fmt
);
85 void bdrv_register(BlockDriver
*bdrv
);
88 typedef struct BlockDriverAIOCB BlockDriverAIOCB
;
89 typedef void BlockDriverCompletionFunc(void *opaque
, int ret
);
90 typedef void BlockDriverDirtyHandler(BlockDriverState
*bs
, int64_t sector
,
92 BlockDriverAIOCB
*bdrv_aio_readv(BlockDriverState
*bs
, int64_t sector_num
,
93 QEMUIOVector
*iov
, int nb_sectors
,
94 BlockDriverCompletionFunc
*cb
, void *opaque
);
95 BlockDriverAIOCB
*bdrv_aio_writev(BlockDriverState
*bs
, int64_t sector_num
,
96 QEMUIOVector
*iov
, int nb_sectors
,
97 BlockDriverCompletionFunc
*cb
, void *opaque
);
98 BlockDriverAIOCB
*bdrv_aio_flush(BlockDriverState
*bs
,
99 BlockDriverCompletionFunc
*cb
, void *opaque
);
100 void bdrv_aio_cancel(BlockDriverAIOCB
*acb
);
102 typedef struct BlockRequest
{
103 /* Fields to be filled by multiwrite caller */
107 BlockDriverCompletionFunc
*cb
;
110 /* Filled by multiwrite implementation */
114 int bdrv_aio_multiwrite(BlockDriverState
*bs
, BlockRequest
*reqs
,
117 /* sg packet commands */
118 int bdrv_ioctl(BlockDriverState
*bs
, unsigned long int req
, void *buf
);
119 BlockDriverAIOCB
*bdrv_aio_ioctl(BlockDriverState
*bs
,
120 unsigned long int req
, void *buf
,
121 BlockDriverCompletionFunc
*cb
, void *opaque
);
123 /* Ensure contents are flushed to disk. */
124 void bdrv_flush(BlockDriverState
*bs
);
125 void bdrv_flush_all(void);
127 int bdrv_has_zero_init(BlockDriverState
*bs
);
128 int bdrv_is_allocated(BlockDriverState
*bs
, int64_t sector_num
, int nb_sectors
,
131 #define BDRV_TYPE_HD 0
132 #define BDRV_TYPE_CDROM 1
133 #define BDRV_TYPE_FLOPPY 2
134 #define BIOS_ATA_TRANSLATION_AUTO 0
135 #define BIOS_ATA_TRANSLATION_NONE 1
136 #define BIOS_ATA_TRANSLATION_LBA 2
137 #define BIOS_ATA_TRANSLATION_LARGE 3
138 #define BIOS_ATA_TRANSLATION_RECHS 4
140 void bdrv_set_geometry_hint(BlockDriverState
*bs
,
141 int cyls
, int heads
, int secs
);
142 void bdrv_set_type_hint(BlockDriverState
*bs
, int type
);
143 void bdrv_set_translation_hint(BlockDriverState
*bs
, int translation
);
144 void bdrv_get_geometry_hint(BlockDriverState
*bs
,
145 int *pcyls
, int *pheads
, int *psecs
);
146 int bdrv_get_type_hint(BlockDriverState
*bs
);
147 int bdrv_get_translation_hint(BlockDriverState
*bs
);
148 int bdrv_is_removable(BlockDriverState
*bs
);
149 int bdrv_is_read_only(BlockDriverState
*bs
);
150 int bdrv_is_sg(BlockDriverState
*bs
);
151 int bdrv_enable_write_cache(BlockDriverState
*bs
);
152 int bdrv_is_inserted(BlockDriverState
*bs
);
153 int bdrv_media_changed(BlockDriverState
*bs
);
154 int bdrv_is_locked(BlockDriverState
*bs
);
155 void bdrv_set_locked(BlockDriverState
*bs
, int locked
);
156 int bdrv_eject(BlockDriverState
*bs
, int eject_flag
);
157 void bdrv_set_change_cb(BlockDriverState
*bs
,
158 void (*change_cb
)(void *opaque
), void *opaque
);
159 void bdrv_get_format(BlockDriverState
*bs
, char *buf
, int buf_size
);
160 BlockDriverState
*bdrv_find(const char *name
);
161 void bdrv_iterate(void (*it
)(void *opaque
, BlockDriverState
*bs
),
163 int bdrv_is_encrypted(BlockDriverState
*bs
);
164 int bdrv_key_required(BlockDriverState
*bs
);
165 int bdrv_set_key(BlockDriverState
*bs
, const char *key
);
166 int bdrv_query_missing_keys(void);
167 void bdrv_iterate_format(void (*it
)(void *opaque
, const char *name
),
169 const char *bdrv_get_device_name(BlockDriverState
*bs
);
170 int bdrv_write_compressed(BlockDriverState
*bs
, int64_t sector_num
,
171 const uint8_t *buf
, int nb_sectors
);
172 int bdrv_get_info(BlockDriverState
*bs
, BlockDriverInfo
*bdi
);
174 const char *bdrv_get_encrypted_filename(BlockDriverState
*bs
);
175 void bdrv_get_backing_filename(BlockDriverState
*bs
,
176 char *filename
, int filename_size
);
177 int bdrv_snapshot_create(BlockDriverState
*bs
,
178 QEMUSnapshotInfo
*sn_info
);
179 int bdrv_snapshot_goto(BlockDriverState
*bs
,
180 const char *snapshot_id
);
181 int bdrv_snapshot_delete(BlockDriverState
*bs
, const char *snapshot_id
);
182 int bdrv_snapshot_list(BlockDriverState
*bs
,
183 QEMUSnapshotInfo
**psn_info
);
184 char *bdrv_snapshot_dump(char *buf
, int buf_size
, QEMUSnapshotInfo
*sn
);
186 char *get_human_readable_size(char *buf
, int buf_size
, int64_t size
);
187 int path_is_absolute(const char *path
);
188 void path_combine(char *dest
, int dest_size
,
189 const char *base_path
,
190 const char *filename
);
192 int bdrv_save_vmstate(BlockDriverState
*bs
, const uint8_t *buf
,
193 int64_t pos
, int size
);
195 int bdrv_load_vmstate(BlockDriverState
*bs
, uint8_t *buf
,
196 int64_t pos
, int size
);
198 #define BDRV_SECTORS_PER_DIRTY_CHUNK 2048
200 void bdrv_set_dirty_tracking(BlockDriverState
*bs
, int enable
);
201 int bdrv_get_dirty(BlockDriverState
*bs
, int64_t sector
);
202 void bdrv_reset_dirty(BlockDriverState
*bs
, int64_t cur_sector
,
204 int64_t bdrv_get_dirty_count(BlockDriverState
*bs
);
210 BLKDBG_L1_GROW_ALLOC_TABLE
,
211 BLKDBG_L1_GROW_WRITE_TABLE
,
212 BLKDBG_L1_GROW_ACTIVATE_TABLE
,
216 BLKDBG_L2_UPDATE_COMPRESSED
,
217 BLKDBG_L2_ALLOC_COW_READ
,
218 BLKDBG_L2_ALLOC_WRITE
,
223 BLKDBG_READ_BACKING_AIO
,
224 BLKDBG_READ_COMPRESSED
,
227 BLKDBG_WRITE_COMPRESSED
,
235 BLKDBG_REFTABLE_LOAD
,
236 BLKDBG_REFTABLE_GROW
,
238 BLKDBG_REFBLOCK_LOAD
,
239 BLKDBG_REFBLOCK_UPDATE
,
240 BLKDBG_REFBLOCK_UPDATE_PART
,
241 BLKDBG_REFBLOCK_ALLOC
,
242 BLKDBG_REFBLOCK_ALLOC_HOOKUP
,
243 BLKDBG_REFBLOCK_ALLOC_WRITE
,
244 BLKDBG_REFBLOCK_ALLOC_WRITE_BLOCKS
,
245 BLKDBG_REFBLOCK_ALLOC_WRITE_TABLE
,
246 BLKDBG_REFBLOCK_ALLOC_SWITCH_TABLE
,
248 BLKDBG_CLUSTER_ALLOC
,
249 BLKDBG_CLUSTER_ALLOC_BYTES
,
255 #define BLKDBG_EVENT(bs, evt) bdrv_debug_event(bs, evt)
256 void bdrv_debug_event(BlockDriverState
*bs
, BlkDebugEvent event
);