uint64_t compressed_clusters;
} BlockFragInfo;
-typedef struct QEMUSnapshotInfo {
- char id_str[128]; /* unique snapshot id */
- /* the following fields are informative. They are not needed for
- the consistency of the snapshot */
- char name[256]; /* user chosen name */
- uint64_t vm_state_size; /* VM state info size */
- uint32_t date_sec; /* UTC date of the snapshot */
- uint32_t date_nsec;
- uint64_t vm_clock_nsec; /* VM clock relative to boot */
-} QEMUSnapshotInfo;
-
/* Callbacks for block device models */
typedef struct BlockDevOps {
/*
#define BDRV_SECTOR_SIZE (1ULL << BDRV_SECTOR_BITS)
#define BDRV_SECTOR_MASK ~(BDRV_SECTOR_SIZE - 1)
+/* BDRV_BLOCK_DATA: data is read from bs->file or another file
+ * BDRV_BLOCK_ZERO: sectors read as zero
+ * BDRV_BLOCK_OFFSET_VALID: sector stored in bs->file as raw data
+ *
+ * If BDRV_BLOCK_OFFSET_VALID is set, bits 9-62 represent the offset in
+ * bs->file where sector data can be read from as raw data.
+ *
+ * DATA == 0 && ZERO == 0 means that data is read from backing_hd if present.
+ *
+ * DATA ZERO OFFSET_VALID
+ * t t t sectors read as zero, bs->file is zero at offset
+ * t f t sectors read as valid from bs->file at offset
+ * f t t sectors preallocated, read as zero, bs->file not
+ * necessarily zero at offset
+ * f f t sectors preallocated but read from backing_hd,
+ * bs->file contains garbage at offset
+ * t t f sectors preallocated, read as zero, unknown offset
+ * t f f sectors read from unknown file or offset
+ * f t f not allocated or unknown offset, read as zero
+ * f f f not allocated or unknown offset, read from backing_hd
+ */
+#define BDRV_BLOCK_DATA 1
+#define BDRV_BLOCK_ZERO 2
+#define BDRV_BLOCK_OFFSET_VALID 4
+#define BDRV_BLOCK_OFFSET_MASK BDRV_SECTOR_MASK
+
typedef enum {
BDRV_ACTION_REPORT, BDRV_ACTION_IGNORE, BDRV_ACTION_STOP
} BlockErrorAction;
/* disk I/O throttling */
void bdrv_io_limits_enable(BlockDriverState *bs);
void bdrv_io_limits_disable(BlockDriverState *bs);
-bool bdrv_io_limits_enabled(BlockDriverState *bs);
void bdrv_init(void);
void bdrv_init_with_whitelist(void);
-BlockDriver *bdrv_find_protocol(const char *filename);
+BlockDriver *bdrv_find_protocol(const char *filename,
+ bool allow_protocol_prefix);
BlockDriver *bdrv_find_format(const char *format_name);
BlockDriver *bdrv_find_whitelisted_format(const char *format_name,
bool readonly);
void bdrv_make_anon(BlockDriverState *bs);
void bdrv_swap(BlockDriverState *bs_new, BlockDriverState *bs_old);
void bdrv_append(BlockDriverState *bs_new, BlockDriverState *bs_top);
-void bdrv_delete(BlockDriverState *bs);
int bdrv_parse_cache_flags(const char *mode, int *flags);
int bdrv_parse_discard_flags(const char *mode, int *flags);
int bdrv_file_open(BlockDriverState **pbs, const char *filename,
uint8_t *buf, int nb_sectors);
int bdrv_write(BlockDriverState *bs, int64_t sector_num,
const uint8_t *buf, int nb_sectors);
+int bdrv_write_zeroes(BlockDriverState *bs, int64_t sector_num,
+ int nb_sectors);
int bdrv_writev(BlockDriverState *bs, int64_t sector_num, QEMUIOVector *qiov);
int bdrv_pread(BlockDriverState *bs, int64_t offset,
void *buf, int count);
*/
int coroutine_fn bdrv_co_write_zeroes(BlockDriverState *bs, int64_t sector_num,
int nb_sectors);
-int coroutine_fn bdrv_co_is_allocated(BlockDriverState *bs, int64_t sector_num,
- int nb_sectors, int *pnum);
-int coroutine_fn bdrv_co_is_allocated_above(BlockDriverState *top,
- BlockDriverState *base,
- int64_t sector_num,
- int nb_sectors, int *pnum);
BlockDriverState *bdrv_find_backing_image(BlockDriverState *bs,
const char *backing_file);
int bdrv_get_backing_file_depth(BlockDriverState *bs);
int bdrv_check(BlockDriverState *bs, BdrvCheckResult *res, BdrvCheckMode fix);
+int bdrv_amend_options(BlockDriverState *bs_new, QEMUOptionParameter *options);
+
/* async block I/O */
typedef void BlockDriverDirtyHandler(BlockDriverState *bs, int64_t sector,
int sector_num);
/* Ensure contents are flushed to disk. */
int bdrv_flush(BlockDriverState *bs);
int coroutine_fn bdrv_co_flush(BlockDriverState *bs);
-void bdrv_flush_all(void);
+int bdrv_flush_all(void);
void bdrv_close_all(void);
void bdrv_drain_all(void);
int bdrv_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors);
int bdrv_co_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors);
+int bdrv_has_zero_init_1(BlockDriverState *bs);
int bdrv_has_zero_init(BlockDriverState *bs);
+int64_t bdrv_get_block_status(BlockDriverState *bs, int64_t sector_num,
+ int nb_sectors, int *pnum);
int bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors,
int *pnum);
int bdrv_is_allocated_above(BlockDriverState *top, BlockDriverState *base,
char *filename, int filename_size);
void bdrv_get_full_backing_filename(BlockDriverState *bs,
char *dest, size_t sz);
-BlockInfo *bdrv_query_info(BlockDriverState *s);
-BlockStats *bdrv_query_stats(const BlockDriverState *bs);
-int bdrv_can_snapshot(BlockDriverState *bs);
int bdrv_is_snapshot(BlockDriverState *bs);
-BlockDriverState *bdrv_snapshots(void);
-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_snapshot_load_tmp(BlockDriverState *bs,
- const char *snapshot_name);
-char *bdrv_snapshot_dump(char *buf, int buf_size, QEMUSnapshotInfo *sn);
-
-char *get_human_readable_size(char *buf, int buf_size, int64_t size);
+
int path_is_absolute(const char *path);
void path_combine(char *dest, int dest_size,
const char *base_path,
void bdrv_enable_copy_on_read(BlockDriverState *bs);
void bdrv_disable_copy_on_read(BlockDriverState *bs);
+void bdrv_ref(BlockDriverState *bs);
+void bdrv_unref(BlockDriverState *bs);
void bdrv_set_in_use(BlockDriverState *bs, int in_use);
int bdrv_in_use(BlockDriverState *bs);
BLKDBG_REFTABLE_LOAD,
BLKDBG_REFTABLE_GROW,
+ BLKDBG_REFTABLE_UPDATE,
BLKDBG_REFBLOCK_LOAD,
BLKDBG_REFBLOCK_UPDATE,
BLKDBG_CLUSTER_ALLOC_BYTES,
BLKDBG_CLUSTER_FREE,
+ BLKDBG_FLUSH_TO_OS,
+ BLKDBG_FLUSH_TO_DISK,
+
BLKDBG_EVENT_MAX,
} BlkDebugEvent;
projects / mirror_qemu.git / blobdiff