auto import from //branches/cupcake/...@130745

1 files changed, 80 insertions, 11 deletions

diff --git a/block_int.h b/block_int.h
index c2a2e30..137000e 100644
--- a/block_int.h
+++ b/block_int.h
@@ -1,8 +1,8 @@
 /*
  * 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
@@ -24,38 +24,84 @@
 #ifndef BLOCK_INT_H
 #define BLOCK_INT_H
 
+#include "block.h"
+
+#define BLOCK_FLAG_ENCRYPT	1
+#define BLOCK_FLAG_COMPRESS	2
+#define BLOCK_FLAG_COMPAT6	4
+
 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, 
+    int (*bdrv_open)(BlockDriverState *bs, const char *filename, int flags);
+    int (*bdrv_read)(BlockDriverState *bs, int64_t sector_num,
                      uint8_t *buf, int nb_sectors);
-    int (*bdrv_write)(BlockDriverState *bs, int64_t sector_num, 
+    int (*bdrv_write)(BlockDriverState *bs, int64_t sector_num,
                       const uint8_t *buf, int nb_sectors);
     void (*bdrv_close)(BlockDriverState *bs);
-    int (*bdrv_create)(const char *filename, int64_t total_sectors, 
+    int (*bdrv_create)(const char *filename, int64_t total_sectors,
                        const char *backing_file, int flags);
     void (*bdrv_flush)(BlockDriverState *bs);
     int (*bdrv_is_allocated)(BlockDriverState *bs, int64_t sector_num,
                              int nb_sectors, int *pnum);
     int (*bdrv_set_key)(BlockDriverState *bs, const char *key);
     int (*bdrv_make_empty)(BlockDriverState *bs);
+    /* aio */
+    BlockDriverAIOCB *(*bdrv_aio_read)(BlockDriverState *bs,
+        int64_t sector_num, uint8_t *buf, int nb_sectors,
+        BlockDriverCompletionFunc *cb, void *opaque);
+    BlockDriverAIOCB *(*bdrv_aio_write)(BlockDriverState *bs,
+        int64_t sector_num, const uint8_t *buf, int nb_sectors,
+        BlockDriverCompletionFunc *cb, void *opaque);
+    void (*bdrv_aio_cancel)(BlockDriverAIOCB *acb);
+    int aiocb_size;
+
+    const char *protocol_name;
+    int (*bdrv_pread)(BlockDriverState *bs, int64_t offset,
+                      uint8_t *buf, int count);
+    int (*bdrv_pwrite)(BlockDriverState *bs, int64_t offset,
+                       const uint8_t *buf, int count);
+    int (*bdrv_truncate)(BlockDriverState *bs, int64_t offset);
+    int64_t (*bdrv_getlength)(BlockDriverState *bs);
+    int (*bdrv_write_compressed)(BlockDriverState *bs, int64_t sector_num,
+                                 const uint8_t *buf, int nb_sectors);
+
+    int (*bdrv_snapshot_create)(BlockDriverState *bs,
+                                QEMUSnapshotInfo *sn_info);
+    int (*bdrv_snapshot_goto)(BlockDriverState *bs,
+                              const char *snapshot_id);
+    int (*bdrv_snapshot_delete)(BlockDriverState *bs, const char *snapshot_id);
+    int (*bdrv_snapshot_list)(BlockDriverState *bs,
+                              QEMUSnapshotInfo **psn_info);
+    int (*bdrv_get_info)(BlockDriverState *bs, BlockDriverInfo *bdi);
+
+    /* removable device specific */
+    int (*bdrv_is_inserted)(BlockDriverState *bs);
+    int (*bdrv_media_changed)(BlockDriverState *bs);
+    int (*bdrv_eject)(BlockDriverState *bs, int eject_flag);
+    int (*bdrv_set_locked)(BlockDriverState *bs, int locked);
+
+    /* to control generic scsi devices */
+    int (*bdrv_ioctl)(BlockDriverState *bs, unsigned long int req, void *buf);
+
+    BlockDriverAIOCB *free_aiocb;
     struct BlockDriver *next;
 };
 
 struct BlockDriverState {
-    int64_t total_sectors;
+    int64_t total_sectors; /* if we are reading a disk image, give its
+                              size in 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 */
+    int sg;        /* if true, the device is a /dev/sg* */
     /* event callback when inserting/removing */
     void (*change_cb)(void *opaque);
     void *change_opaque;
 
-    BlockDriver *drv;
+    BlockDriver *drv; /* NULL means no media */
     void *opaque;
 
     int boot_sector_enabled;
@@ -65,9 +111,19 @@ struct BlockDriverState {
     char backing_file[1024]; /* if non zero, the image is a diff of
                                 this file image */
     int is_temporary;
-    
+    int media_changed;
+
     BlockDriverState *backing_hd;
-    
+    /* async read/write emulation */
+
+    void *sync_aiocb;
+
+    /* I/O stats (display with "info blockstats"). */
+    uint64_t rd_bytes;
+    uint64_t wr_bytes;
+    uint64_t rd_ops;
+    uint64_t wr_ops;
+
     /* NOTE: the following infos are only hints for real hardware
        drivers. They are not used by the block driver */
     int cyls, heads, secs, translation;
@@ -76,6 +132,19 @@ struct BlockDriverState {
     BlockDriverState *next;
 };
 
+struct BlockDriverAIOCB {
+    BlockDriverState *bs;
+    BlockDriverCompletionFunc *cb;
+    void *opaque;
+    BlockDriverAIOCB *next;
+};
+
 void get_tmp_filename(char *filename, int size);
 
+void *qemu_aio_get(BlockDriverState *bs, BlockDriverCompletionFunc *cb,
+                   void *opaque);
+void qemu_aio_release(void *p);
+
+BlockDriverState *bdrv_first;
+
 #endif /* BLOCK_INT_H */