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authorbellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>2004-08-01 21:59:26 +0000
committerbellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>2004-08-01 21:59:26 +0000
commitea2384d36e1e5f6dfd44b748d290762181c38350 (patch)
treeea191df549047a8de81a81a1cfe4c05bc0919534 /block_int.h
parentAES crypto support (diff)
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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.h77
1 files changed, 77 insertions, 0 deletions
diff --git a/block_int.h b/block_int.h
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index 000000000..36a88ed0a
--- /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 */