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author | bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2004-08-01 21:59:26 +0000 |
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committer | bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2004-08-01 21:59:26 +0000 |
commit | ea2384d36e1e5f6dfd44b748d290762181c38350 (patch) | |
tree | ea191df549047a8de81a81a1cfe4c05bc0919534 /block_int.h | |
parent | e4d4fe3c34cdd6e26f9b9975efec7d1e81ad00b6 (diff) | |
download | hqemu-ea2384d36e1e5f6dfd44b748d290762181c38350.zip hqemu-ea2384d36e1e5f6dfd44b748d290762181c38350.tar.gz |
new disk image layer
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1037 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'block_int.h')
-rw-r--r-- | block_int.h | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/block_int.h b/block_int.h new file mode 100644 index 0000000..36a88ed --- /dev/null +++ b/block_int.h @@ -0,0 +1,77 @@ +/* + * QEMU System Emulator block driver + * + * Copyright (c) 2003 Fabrice Bellard + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ +#ifndef BLOCK_INT_H +#define BLOCK_INT_H + +struct BlockDriver { + const char *format_name; + int instance_size; + int (*bdrv_probe)(const uint8_t *buf, int buf_size, const char *filename); + int (*bdrv_open)(BlockDriverState *bs, const char *filename); + int (*bdrv_read)(BlockDriverState *bs, int64_t sector_num, + uint8_t *buf, int nb_sectors); + int (*bdrv_write)(BlockDriverState *bs, int64_t sector_num, + const uint8_t *buf, int nb_sectors); + int (*bdrv_close)(BlockDriverState *bs); + int (*bdrv_create)(const char *filename, int64_t total_sectors, + const char *backing_file, int flags); + int (*bdrv_is_allocated)(BlockDriverState *bs, int64_t sector_num, + int nb_sectors, int *pnum); + int (*bdrv_set_key)(BlockDriverState *bs, const char *key); + struct BlockDriver *next; +}; + +struct BlockDriverState { + int64_t total_sectors; + int read_only; /* if true, the media is read only */ + int inserted; /* if true, the media is present */ + int removable; /* if true, the media can be removed */ + int locked; /* if true, the media cannot temporarily be ejected */ + int encrypted; /* if true, the media is encrypted */ + /* event callback when inserting/removing */ + void (*change_cb)(void *opaque); + void *change_opaque; + + BlockDriver *drv; + void *opaque; + + int boot_sector_enabled; + uint8_t boot_sector_data[512]; + + char filename[1024]; + char backing_file[1024]; /* if non zero, the image is a diff of + this file image */ + int is_temporary; + + BlockDriverState *backing_hd; + + /* NOTE: the following infos are only hints for real hardware + drivers. They are not used by the block driver */ + int cyls, heads, secs; + int type; + char device_name[32]; + BlockDriverState *next; +}; + +#endif /* BLOCK_INT_H */ |