Annotation of qemu/block.h, revision 1.1.1.7
1.1 root 1: #ifndef BLOCK_H
2: #define BLOCK_H
3:
1.1.1.2 root 4: #include "qemu-aio.h"
5: #include "qemu-common.h"
1.1.1.5 root 6: #include "qemu-option.h"
1.1.1.6 root 7: #include "qobject.h"
1.1.1.2 root 8:
1.1 root 9: /* block.c */
10: typedef struct BlockDriver BlockDriver;
11:
12: typedef struct BlockDriverInfo {
13: /* in bytes, 0 if irrelevant */
14: int cluster_size;
15: /* offset at which the VM state can be saved (0 if not possible) */
16: int64_t vm_state_offset;
17: } BlockDriverInfo;
18:
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 */
26: uint32_t date_nsec;
27: uint64_t vm_clock_nsec; /* VM clock relative to boot */
28: } QEMUSnapshotInfo;
29:
30: #define BDRV_O_RDONLY 0x0000
31: #define BDRV_O_RDWR 0x0002
32: #define BDRV_O_ACCESS 0x0003
33: #define BDRV_O_CREAT 0x0004 /* create an empty file */
34: #define BDRV_O_SNAPSHOT 0x0008 /* open the file read only and save writes in a snapshot */
35: #define BDRV_O_FILE 0x0010 /* open as a raw file (do not try to
36: use a disk image format on top of
37: it (default for
38: bdrv_file_open()) */
1.1.1.2 root 39: #define BDRV_O_NOCACHE 0x0020 /* do not use the host page cache */
40: #define BDRV_O_CACHE_WB 0x0040 /* use write-back caching */
1.1.1.6 root 41: #define BDRV_O_NATIVE_AIO 0x0080 /* use native AIO instead of the thread pool */
1.1.1.2 root 42:
1.1.1.5 root 43: #define BDRV_O_CACHE_MASK (BDRV_O_NOCACHE | BDRV_O_CACHE_WB)
1.1 root 44:
1.1.1.6 root 45: #define BDRV_SECTOR_BITS 9
46: #define BDRV_SECTOR_SIZE (1 << BDRV_SECTOR_BITS)
47: #define BDRV_SECTOR_MASK ~(BDRV_SECTOR_SIZE - 1);
48:
49: void bdrv_info_print(Monitor *mon, const QObject *data);
50: void bdrv_info(Monitor *mon, QObject **ret_data);
51: void bdrv_stats_print(Monitor *mon, const QObject *data);
52: void bdrv_info_stats(Monitor *mon, QObject **ret_data);
1.1 root 53:
54: void bdrv_init(void);
1.1.1.6 root 55: void bdrv_init_with_whitelist(void);
1.1 root 56: BlockDriver *bdrv_find_format(const char *format_name);
1.1.1.6 root 57: BlockDriver *bdrv_find_whitelisted_format(const char *format_name);
1.1.1.5 root 58: int bdrv_create(BlockDriver *drv, const char* filename,
59: QEMUOptionParameter *options);
60: int bdrv_create2(BlockDriver *drv,
61: const char *filename, int64_t size_in_sectors,
62: const char *backing_file, const char *backing_format,
63: int flags);
1.1 root 64: BlockDriverState *bdrv_new(const char *device_name);
65: void bdrv_delete(BlockDriverState *bs);
66: int bdrv_file_open(BlockDriverState **pbs, const char *filename, int flags);
67: int bdrv_open(BlockDriverState *bs, const char *filename, int flags);
68: int bdrv_open2(BlockDriverState *bs, const char *filename, int flags,
69: BlockDriver *drv);
70: void bdrv_close(BlockDriverState *bs);
1.1.1.5 root 71: int bdrv_check(BlockDriverState *bs);
1.1 root 72: int bdrv_read(BlockDriverState *bs, int64_t sector_num,
73: uint8_t *buf, int nb_sectors);
74: int bdrv_write(BlockDriverState *bs, int64_t sector_num,
75: const uint8_t *buf, int nb_sectors);
76: int bdrv_pread(BlockDriverState *bs, int64_t offset,
77: void *buf, int count);
78: int bdrv_pwrite(BlockDriverState *bs, int64_t offset,
79: const void *buf, int count);
1.1.1.7 ! root 80: int bdrv_pwrite_sync(BlockDriverState *bs, int64_t offset,
! 81: const void *buf, int count);
! 82: int bdrv_write_sync(BlockDriverState *bs, int64_t sector_num,
! 83: const uint8_t *buf, int nb_sectors);
1.1 root 84: int bdrv_truncate(BlockDriverState *bs, int64_t offset);
85: int64_t bdrv_getlength(BlockDriverState *bs);
86: void bdrv_get_geometry(BlockDriverState *bs, uint64_t *nb_sectors_ptr);
1.1.1.2 root 87: void bdrv_guess_geometry(BlockDriverState *bs, int *pcyls, int *pheads, int *psecs);
1.1 root 88: int bdrv_commit(BlockDriverState *bs);
1.1.1.5 root 89: void bdrv_register(BlockDriver *bdrv);
90:
1.1 root 91: /* async block I/O */
92: typedef struct BlockDriverAIOCB BlockDriverAIOCB;
93: typedef void BlockDriverCompletionFunc(void *opaque, int ret);
1.1.1.6 root 94: typedef void BlockDriverDirtyHandler(BlockDriverState *bs, int64_t sector,
95: int sector_num);
1.1.1.2 root 96: BlockDriverAIOCB *bdrv_aio_readv(BlockDriverState *bs, int64_t sector_num,
97: QEMUIOVector *iov, int nb_sectors,
98: BlockDriverCompletionFunc *cb, void *opaque);
99: BlockDriverAIOCB *bdrv_aio_writev(BlockDriverState *bs, int64_t sector_num,
100: QEMUIOVector *iov, int nb_sectors,
101: BlockDriverCompletionFunc *cb, void *opaque);
1.1.1.6 root 102: BlockDriverAIOCB *bdrv_aio_flush(BlockDriverState *bs,
103: BlockDriverCompletionFunc *cb, void *opaque);
1.1 root 104: void bdrv_aio_cancel(BlockDriverAIOCB *acb);
105:
1.1.1.6 root 106: typedef struct BlockRequest {
107: /* Fields to be filled by multiwrite caller */
108: int64_t sector;
109: int nb_sectors;
110: QEMUIOVector *qiov;
111: BlockDriverCompletionFunc *cb;
112: void *opaque;
113:
114: /* Filled by multiwrite implementation */
115: int error;
116: } BlockRequest;
117:
118: int bdrv_aio_multiwrite(BlockDriverState *bs, BlockRequest *reqs,
119: int num_reqs);
120:
1.1.1.5 root 121: /* sg packet commands */
122: int bdrv_ioctl(BlockDriverState *bs, unsigned long int req, void *buf);
123: BlockDriverAIOCB *bdrv_aio_ioctl(BlockDriverState *bs,
124: unsigned long int req, void *buf,
125: BlockDriverCompletionFunc *cb, void *opaque);
126:
1.1 root 127: /* Ensure contents are flushed to disk. */
128: void bdrv_flush(BlockDriverState *bs);
1.1.1.2 root 129: void bdrv_flush_all(void);
130:
131: int bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors,
132: int *pnum);
1.1 root 133:
134: #define BDRV_TYPE_HD 0
135: #define BDRV_TYPE_CDROM 1
136: #define BDRV_TYPE_FLOPPY 2
137: #define BIOS_ATA_TRANSLATION_AUTO 0
138: #define BIOS_ATA_TRANSLATION_NONE 1
139: #define BIOS_ATA_TRANSLATION_LBA 2
140: #define BIOS_ATA_TRANSLATION_LARGE 3
141: #define BIOS_ATA_TRANSLATION_RECHS 4
142:
143: void bdrv_set_geometry_hint(BlockDriverState *bs,
144: int cyls, int heads, int secs);
145: void bdrv_set_type_hint(BlockDriverState *bs, int type);
146: void bdrv_set_translation_hint(BlockDriverState *bs, int translation);
147: void bdrv_get_geometry_hint(BlockDriverState *bs,
148: int *pcyls, int *pheads, int *psecs);
149: int bdrv_get_type_hint(BlockDriverState *bs);
150: int bdrv_get_translation_hint(BlockDriverState *bs);
151: int bdrv_is_removable(BlockDriverState *bs);
152: int bdrv_is_read_only(BlockDriverState *bs);
1.1.1.6 root 153: int bdrv_set_read_only(BlockDriverState *bs, int read_only);
1.1 root 154: int bdrv_is_sg(BlockDriverState *bs);
1.1.1.6 root 155: int bdrv_enable_write_cache(BlockDriverState *bs);
1.1 root 156: int bdrv_is_inserted(BlockDriverState *bs);
157: int bdrv_media_changed(BlockDriverState *bs);
158: int bdrv_is_locked(BlockDriverState *bs);
159: void bdrv_set_locked(BlockDriverState *bs, int locked);
1.1.1.5 root 160: int bdrv_eject(BlockDriverState *bs, int eject_flag);
1.1 root 161: void bdrv_set_change_cb(BlockDriverState *bs,
162: void (*change_cb)(void *opaque), void *opaque);
163: void bdrv_get_format(BlockDriverState *bs, char *buf, int buf_size);
164: BlockDriverState *bdrv_find(const char *name);
1.1.1.3 root 165: void bdrv_iterate(void (*it)(void *opaque, BlockDriverState *bs),
166: void *opaque);
1.1 root 167: int bdrv_is_encrypted(BlockDriverState *bs);
1.1.1.3 root 168: int bdrv_key_required(BlockDriverState *bs);
1.1 root 169: int bdrv_set_key(BlockDriverState *bs, const char *key);
1.1.1.3 root 170: int bdrv_query_missing_keys(void);
1.1 root 171: void bdrv_iterate_format(void (*it)(void *opaque, const char *name),
172: void *opaque);
173: const char *bdrv_get_device_name(BlockDriverState *bs);
174: int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num,
175: const uint8_t *buf, int nb_sectors);
176: int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi);
177:
1.1.1.3 root 178: const char *bdrv_get_encrypted_filename(BlockDriverState *bs);
1.1 root 179: void bdrv_get_backing_filename(BlockDriverState *bs,
180: char *filename, int filename_size);
181: int bdrv_snapshot_create(BlockDriverState *bs,
182: QEMUSnapshotInfo *sn_info);
183: int bdrv_snapshot_goto(BlockDriverState *bs,
184: const char *snapshot_id);
185: int bdrv_snapshot_delete(BlockDriverState *bs, const char *snapshot_id);
186: int bdrv_snapshot_list(BlockDriverState *bs,
187: QEMUSnapshotInfo **psn_info);
188: char *bdrv_snapshot_dump(char *buf, int buf_size, QEMUSnapshotInfo *sn);
189:
190: char *get_human_readable_size(char *buf, int buf_size, int64_t size);
191: int path_is_absolute(const char *path);
192: void path_combine(char *dest, int dest_size,
193: const char *base_path,
194: const char *filename);
195:
1.1.1.5 root 196: int bdrv_save_vmstate(BlockDriverState *bs, const uint8_t *buf,
197: int64_t pos, int size);
1.1.1.4 root 198:
1.1.1.5 root 199: int bdrv_load_vmstate(BlockDriverState *bs, uint8_t *buf,
200: int64_t pos, int size);
1.1.1.4 root 201:
1.1.1.6 root 202: #define BDRV_SECTORS_PER_DIRTY_CHUNK 2048
203:
204: void bdrv_set_dirty_tracking(BlockDriverState *bs, int enable);
205: int bdrv_get_dirty(BlockDriverState *bs, int64_t sector);
206: void bdrv_reset_dirty(BlockDriverState *bs, int64_t cur_sector,
207: int nr_sectors);
1.1 root 208: #endif
unix.superglobalmegacorp.com
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to block.h CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Qemu by Fabrice Bellard] / qemu