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authorbellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>2006-08-01 16:21:11 +0000
committerbellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>2006-08-01 16:21:11 +0000
commit83f6409109acd7cd13ff8a603f29c46033c4fb00 (patch)
treee06b75a308f58785b6c646d192e8e53fda006e20 /vl.h
parent7954c73498b7e782ba5db2993637daef456b6310 (diff)
downloadqemu-83f6409109acd7cd13ff8a603f29c46033c4fb00.zip
qemu-83f6409109acd7cd13ff8a603f29c46033c4fb00.tar.gz
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async file I/O API
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2075 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'vl.h')
-rw-r--r--vl.h58
1 files changed, 56 insertions, 2 deletions
diff --git a/vl.h b/vl.h
index d97f485..d653f46 100644
--- a/vl.h
+++ b/vl.h
@@ -481,6 +481,16 @@ void qemu_put_timer(QEMUFile *f, QEMUTimer *ts);
void cpu_save(QEMUFile *f, void *opaque);
int cpu_load(QEMUFile *f, void *opaque, int version_id);
+/* bottom halves */
+typedef struct QEMUBH QEMUBH;
+typedef void QEMUBHFunc(void *opaque);
+
+QEMUBH *qemu_bh_new(QEMUBHFunc *cb, void *opaque);
+void qemu_bh_schedule(QEMUBH *bh);
+void qemu_bh_cancel(QEMUBH *bh);
+void qemu_bh_delete(QEMUBH *bh);
+void qemu_bh_poll(void);
+
/* block.c */
typedef struct BlockDriverState BlockDriverState;
typedef struct BlockDriver BlockDriver;
@@ -495,6 +505,16 @@ extern BlockDriver bdrv_bochs;
extern BlockDriver bdrv_vpc;
extern BlockDriver bdrv_vvfat;
+#define BDRV_O_RDONLY 0x0000
+#define BDRV_O_RDWR 0x0002
+#define BDRV_O_ACCESS 0x0003
+#define BDRV_O_CREAT 0x0004 /* create an empty file */
+#define BDRV_O_SNAPSHOT 0x0008 /* open the file read only and save writes in a snapshot */
+#define BDRV_O_FILE 0x0010 /* open as a raw file (do not try to
+ use a disk image format on top of
+ it (default for
+ bdrv_file_open()) */
+
void bdrv_init(void);
BlockDriver *bdrv_find_format(const char *format_name);
int bdrv_create(BlockDriver *drv,
@@ -502,17 +522,44 @@ int bdrv_create(BlockDriver *drv,
const char *backing_file, int flags);
BlockDriverState *bdrv_new(const char *device_name);
void bdrv_delete(BlockDriverState *bs);
-int bdrv_open(BlockDriverState *bs, const char *filename, int snapshot);
-int bdrv_open2(BlockDriverState *bs, const char *filename, int snapshot,
+int bdrv_file_open(BlockDriverState **pbs, const char *filename, int flags);
+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_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_pread(BlockDriverState *bs, int64_t offset,
+ void *buf, int count);
+int bdrv_pwrite(BlockDriverState *bs, int64_t offset,
+ const void *buf, int count);
+int bdrv_truncate(BlockDriverState *bs, int64_t offset);
+int64_t bdrv_getlength(BlockDriverState *bs);
void bdrv_get_geometry(BlockDriverState *bs, int64_t *nb_sectors_ptr);
int bdrv_commit(BlockDriverState *bs);
void bdrv_set_boot_sector(BlockDriverState *bs, const uint8_t *data, int size);
+/* async block I/O */
+typedef struct BlockDriverAIOCB BlockDriverAIOCB;
+typedef void BlockDriverCompletionFunc(void *opaque, int ret);
+
+BlockDriverAIOCB *bdrv_aio_new(BlockDriverState *bs);
+int bdrv_aio_read(BlockDriverAIOCB *acb, int64_t sector_num,
+ uint8_t *buf, int nb_sectors,
+ BlockDriverCompletionFunc *cb, void *opaque);
+int bdrv_aio_write(BlockDriverAIOCB *acb, int64_t sector_num,
+ const uint8_t *buf, int nb_sectors,
+ BlockDriverCompletionFunc *cb, void *opaque);
+void bdrv_aio_cancel(BlockDriverAIOCB *acb);
+void bdrv_aio_delete(BlockDriverAIOCB *acb);
+
+void qemu_aio_init(void);
+void qemu_aio_poll(void);
+void qemu_aio_wait_start(void);
+void qemu_aio_wait(void);
+void qemu_aio_wait_end(void);
+
/* Ensure contents are flushed to disk. */
void bdrv_flush(BlockDriverState *bs);
@@ -551,6 +598,13 @@ const char *bdrv_get_device_name(BlockDriverState *bs);
int qcow_get_cluster_size(BlockDriverState *bs);
int qcow_compress_cluster(BlockDriverState *bs, int64_t sector_num,
const uint8_t *buf);
+void bdrv_get_backing_filename(BlockDriverState *bs,
+ char *filename, int filename_size);
+
+int path_is_absolute(const char *path);
+void path_combine(char *dest, int dest_size,
+ const char *base_path,
+ const char *filename);
#ifndef QEMU_TOOL