raw-posix: add Linux native AIO support

[mirror_qemu.git] / block.h

diff --git a/block.h b/block.h
index 750816e55d16b855e131c0f7f7af1299cd98db71..28bf357091deea4697a62be437c554dfb5e599ac 100644 (file)
--- a/block.h
+++ b/block.h
@@ -3,24 +3,11 @@
 
 #include "qemu-aio.h"
 #include "qemu-common.h"
+#include "qemu-option.h"
 
 /* block.c */
 typedef struct BlockDriver BlockDriver;
 
-extern BlockDriver bdrv_raw;
-extern BlockDriver bdrv_host_device;
-extern BlockDriver bdrv_cow;
-extern BlockDriver bdrv_qcow;
-extern BlockDriver bdrv_vmdk;
-extern BlockDriver bdrv_cloop;
-extern BlockDriver bdrv_dmg;
-extern BlockDriver bdrv_bochs;
-extern BlockDriver bdrv_vpc;
-extern BlockDriver bdrv_vvfat;
-extern BlockDriver bdrv_qcow2;
-extern BlockDriver bdrv_parallels;
-extern BlockDriver bdrv_nbd;
-
 typedef struct BlockDriverInfo {
     /* in bytes, 0 if irrelevant */
     int cluster_size;
@@ -50,18 +37,21 @@ typedef struct QEMUSnapshotInfo {
                                      bdrv_file_open()) */
 #define BDRV_O_NOCACHE     0x0020 /* do not use the host page cache */
 #define BDRV_O_CACHE_WB    0x0040 /* use write-back caching */
-#define BDRV_O_CACHE_DEF   0x0080 /* use default caching */
+#define BDRV_O_NATIVE_AIO  0x0080 /* use native AIO instead of the thread pool */
 
-#define BDRV_O_CACHE_MASK  (BDRV_O_NOCACHE | BDRV_O_CACHE_WB | BDRV_O_CACHE_DEF)
+#define BDRV_O_CACHE_MASK  (BDRV_O_NOCACHE | BDRV_O_CACHE_WB)
 
 void bdrv_info(Monitor *mon);
 void bdrv_info_stats(Monitor *mon);
 
 void bdrv_init(void);
 BlockDriver *bdrv_find_format(const char *format_name);
-int bdrv_create(BlockDriver *drv,
-                const char *filename, int64_t size_in_sectors,
-                const char *backing_file, int flags);
+int bdrv_create(BlockDriver *drv, const char* filename,
+    QEMUOptionParameter *options);
+int bdrv_create2(BlockDriver *drv,
+                 const char *filename, int64_t size_in_sectors,
+                 const char *backing_file, const char *backing_format,
+                 int flags);
 BlockDriverState *bdrv_new(const char *device_name);
 void bdrv_delete(BlockDriverState *bs);
 int bdrv_file_open(BlockDriverState **pbs, const char *filename, int flags);
@@ -69,6 +59,7 @@ int bdrv_open(BlockDriverState *bs, const char *filename, int flags);
 int bdrv_open2(BlockDriverState *bs, const char *filename, int flags,
                BlockDriver *drv);
 void bdrv_close(BlockDriverState *bs);
+int bdrv_check(BlockDriverState *bs);
 int bdrv_read(BlockDriverState *bs, int64_t sector_num,
               uint8_t *buf, int nb_sectors);
 int bdrv_write(BlockDriverState *bs, int64_t sector_num,
@@ -82,6 +73,8 @@ int64_t bdrv_getlength(BlockDriverState *bs);
 void bdrv_get_geometry(BlockDriverState *bs, uint64_t *nb_sectors_ptr);
 void bdrv_guess_geometry(BlockDriverState *bs, int *pcyls, int *pheads, int *psecs);
 int bdrv_commit(BlockDriverState *bs);
+void bdrv_register(BlockDriver *bdrv);
+
 /* async block I/O */
 typedef struct BlockDriverAIOCB BlockDriverAIOCB;
 typedef void BlockDriverCompletionFunc(void *opaque, int ret);
@@ -92,13 +85,6 @@ BlockDriverAIOCB *bdrv_aio_readv(BlockDriverState *bs, int64_t sector_num,
 BlockDriverAIOCB *bdrv_aio_writev(BlockDriverState *bs, int64_t sector_num,
                                   QEMUIOVector *iov, int nb_sectors,
                                   BlockDriverCompletionFunc *cb, void *opaque);
-
-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);
 
 /* sg packet commands */
@@ -138,7 +124,7 @@ int bdrv_is_inserted(BlockDriverState *bs);
 int bdrv_media_changed(BlockDriverState *bs);
 int bdrv_is_locked(BlockDriverState *bs);
 void bdrv_set_locked(BlockDriverState *bs, int locked);
-void bdrv_eject(BlockDriverState *bs, int eject_flag);
+int bdrv_eject(BlockDriverState *bs, int eject_flag);
 void bdrv_set_change_cb(BlockDriverState *bs,
                         void (*change_cb)(void *opaque), void *opaque);
 void bdrv_get_format(BlockDriverState *bs, char *buf, int buf_size);
@@ -174,4 +160,10 @@ void path_combine(char *dest, int dest_size,
                   const char *base_path,
                   const char *filename);
 
+int bdrv_save_vmstate(BlockDriverState *bs, const uint8_t *buf,
+                      int64_t pos, int size);
+
+int bdrv_load_vmstate(BlockDriverState *bs, uint8_t *buf,
+                      int64_t pos, int size);
+
 #endif