Convert mulscc
[qemu/hppa.git] / block.h
blob5aef07656b7b61e7c9c293e36c351ad383af0346
1 #ifndef BLOCK_H
2 #define BLOCK_H
4 #include "qemu-aio.h"
5 #include "qemu-common.h"
7 /* block.c */
8 typedef struct BlockDriver BlockDriver;
10 extern BlockDriver bdrv_raw;
11 extern BlockDriver bdrv_host_device;
12 extern BlockDriver bdrv_cow;
13 extern BlockDriver bdrv_qcow;
14 extern BlockDriver bdrv_vmdk;
15 extern BlockDriver bdrv_cloop;
16 extern BlockDriver bdrv_dmg;
17 extern BlockDriver bdrv_bochs;
18 extern BlockDriver bdrv_vpc;
19 extern BlockDriver bdrv_vvfat;
20 extern BlockDriver bdrv_qcow2;
21 extern BlockDriver bdrv_parallels;
22 extern BlockDriver bdrv_nbd;
24 typedef struct BlockDriverInfo {
25 /* in bytes, 0 if irrelevant */
26 int cluster_size;
27 /* offset at which the VM state can be saved (0 if not possible) */
28 int64_t vm_state_offset;
29 } BlockDriverInfo;
31 typedef struct QEMUSnapshotInfo {
32 char id_str[128]; /* unique snapshot id */
33 /* the following fields are informative. They are not needed for
34 the consistency of the snapshot */
35 char name[256]; /* user choosen name */
36 uint32_t vm_state_size; /* VM state info size */
37 uint32_t date_sec; /* UTC date of the snapshot */
38 uint32_t date_nsec;
39 uint64_t vm_clock_nsec; /* VM clock relative to boot */
40 } QEMUSnapshotInfo;
42 #define BDRV_O_RDONLY 0x0000
43 #define BDRV_O_RDWR 0x0002
44 #define BDRV_O_ACCESS 0x0003
45 #define BDRV_O_CREAT 0x0004 /* create an empty file */
46 #define BDRV_O_SNAPSHOT 0x0008 /* open the file read only and save writes in a snapshot */
47 #define BDRV_O_FILE 0x0010 /* open as a raw file (do not try to
48 use a disk image format on top of
49 it (default for
50 bdrv_file_open()) */
51 #define BDRV_O_NOCACHE 0x0020 /* do not use the host page cache */
52 #define BDRV_O_CACHE_WB 0x0040 /* use write-back caching */
53 #define BDRV_O_CACHE_DEF 0x0080 /* use default caching */
55 #define BDRV_O_CACHE_MASK (BDRV_O_NOCACHE | BDRV_O_CACHE_WB | BDRV_O_CACHE_DEF)
57 void bdrv_info(Monitor *mon);
58 void bdrv_info_stats(Monitor *mon);
60 void bdrv_init(void);
61 BlockDriver *bdrv_find_format(const char *format_name);
62 int bdrv_create(BlockDriver *drv,
63 const char *filename, int64_t size_in_sectors,
64 const char *backing_file, int flags);
65 int bdrv_create2(BlockDriver *drv,
66 const char *filename, int64_t size_in_sectors,
67 const char *backing_file, const char *backing_format,
68 int flags);
69 BlockDriverState *bdrv_new(const char *device_name);
70 void bdrv_delete(BlockDriverState *bs);
71 int bdrv_file_open(BlockDriverState **pbs, const char *filename, int flags);
72 int bdrv_open(BlockDriverState *bs, const char *filename, int flags);
73 int bdrv_open2(BlockDriverState *bs, const char *filename, int flags,
74 BlockDriver *drv);
75 void bdrv_close(BlockDriverState *bs);
76 int bdrv_check(BlockDriverState *bs);
77 int bdrv_read(BlockDriverState *bs, int64_t sector_num,
78 uint8_t *buf, int nb_sectors);
79 int bdrv_write(BlockDriverState *bs, int64_t sector_num,
80 const uint8_t *buf, int nb_sectors);
81 int bdrv_pread(BlockDriverState *bs, int64_t offset,
82 void *buf, int count);
83 int bdrv_pwrite(BlockDriverState *bs, int64_t offset,
84 const void *buf, int count);
85 int bdrv_truncate(BlockDriverState *bs, int64_t offset);
86 int64_t bdrv_getlength(BlockDriverState *bs);
87 void bdrv_get_geometry(BlockDriverState *bs, uint64_t *nb_sectors_ptr);
88 void bdrv_guess_geometry(BlockDriverState *bs, int *pcyls, int *pheads, int *psecs);
89 int bdrv_commit(BlockDriverState *bs);
90 /* async block I/O */
91 typedef struct BlockDriverAIOCB BlockDriverAIOCB;
92 typedef void BlockDriverCompletionFunc(void *opaque, int ret);
94 BlockDriverAIOCB *bdrv_aio_readv(BlockDriverState *bs, int64_t sector_num,
95 QEMUIOVector *iov, int nb_sectors,
96 BlockDriverCompletionFunc *cb, void *opaque);
97 BlockDriverAIOCB *bdrv_aio_writev(BlockDriverState *bs, int64_t sector_num,
98 QEMUIOVector *iov, int nb_sectors,
99 BlockDriverCompletionFunc *cb, void *opaque);
100 void bdrv_aio_cancel(BlockDriverAIOCB *acb);
102 /* sg packet commands */
103 int bdrv_ioctl(BlockDriverState *bs, unsigned long int req, void *buf);
104 BlockDriverAIOCB *bdrv_aio_ioctl(BlockDriverState *bs,
105 unsigned long int req, void *buf,
106 BlockDriverCompletionFunc *cb, void *opaque);
108 /* Ensure contents are flushed to disk. */
109 void bdrv_flush(BlockDriverState *bs);
110 void bdrv_flush_all(void);
112 int bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors,
113 int *pnum);
115 #define BDRV_TYPE_HD 0
116 #define BDRV_TYPE_CDROM 1
117 #define BDRV_TYPE_FLOPPY 2
118 #define BIOS_ATA_TRANSLATION_AUTO 0
119 #define BIOS_ATA_TRANSLATION_NONE 1
120 #define BIOS_ATA_TRANSLATION_LBA 2
121 #define BIOS_ATA_TRANSLATION_LARGE 3
122 #define BIOS_ATA_TRANSLATION_RECHS 4
124 void bdrv_set_geometry_hint(BlockDriverState *bs,
125 int cyls, int heads, int secs);
126 void bdrv_set_type_hint(BlockDriverState *bs, int type);
127 void bdrv_set_translation_hint(BlockDriverState *bs, int translation);
128 void bdrv_get_geometry_hint(BlockDriverState *bs,
129 int *pcyls, int *pheads, int *psecs);
130 int bdrv_get_type_hint(BlockDriverState *bs);
131 int bdrv_get_translation_hint(BlockDriverState *bs);
132 int bdrv_is_removable(BlockDriverState *bs);
133 int bdrv_is_read_only(BlockDriverState *bs);
134 int bdrv_is_sg(BlockDriverState *bs);
135 int bdrv_is_inserted(BlockDriverState *bs);
136 int bdrv_media_changed(BlockDriverState *bs);
137 int bdrv_is_locked(BlockDriverState *bs);
138 void bdrv_set_locked(BlockDriverState *bs, int locked);
139 void bdrv_eject(BlockDriverState *bs, int eject_flag);
140 void bdrv_set_change_cb(BlockDriverState *bs,
141 void (*change_cb)(void *opaque), void *opaque);
142 void bdrv_get_format(BlockDriverState *bs, char *buf, int buf_size);
143 BlockDriverState *bdrv_find(const char *name);
144 void bdrv_iterate(void (*it)(void *opaque, BlockDriverState *bs),
145 void *opaque);
146 int bdrv_is_encrypted(BlockDriverState *bs);
147 int bdrv_key_required(BlockDriverState *bs);
148 int bdrv_set_key(BlockDriverState *bs, const char *key);
149 int bdrv_query_missing_keys(void);
150 void bdrv_iterate_format(void (*it)(void *opaque, const char *name),
151 void *opaque);
152 const char *bdrv_get_device_name(BlockDriverState *bs);
153 int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num,
154 const uint8_t *buf, int nb_sectors);
155 int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi);
157 const char *bdrv_get_encrypted_filename(BlockDriverState *bs);
158 void bdrv_get_backing_filename(BlockDriverState *bs,
159 char *filename, int filename_size);
160 int bdrv_snapshot_create(BlockDriverState *bs,
161 QEMUSnapshotInfo *sn_info);
162 int bdrv_snapshot_goto(BlockDriverState *bs,
163 const char *snapshot_id);
164 int bdrv_snapshot_delete(BlockDriverState *bs, const char *snapshot_id);
165 int bdrv_snapshot_list(BlockDriverState *bs,
166 QEMUSnapshotInfo **psn_info);
167 char *bdrv_snapshot_dump(char *buf, int buf_size, QEMUSnapshotInfo *sn);
169 char *get_human_readable_size(char *buf, int buf_size, int64_t size);
170 int path_is_absolute(const char *path);
171 void path_combine(char *dest, int dest_size,
172 const char *base_path,
173 const char *filename);
175 int bdrv_put_buffer(BlockDriverState *bs, const uint8_t *buf,
176 int64_t pos, int size);
178 int bdrv_get_buffer(BlockDriverState *bs, uint8_t *buf, int64_t pos, int size);
180 #endif