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https://github.com/gwenhael-le-moine/x49gp.git
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78 lines
2.5 KiB
C
78 lines
2.5 KiB
C
/* $Id: block.h,v 1.1 2008/12/11 12:18:17 ecd Exp $
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*/
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#ifndef BLOCK_H
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#define BLOCK_H 1
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#include <stdint.h>
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#define BDRV_O_RDONLY 0x0000
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#define BDRV_O_RDWR 0x0002
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#define BDRV_O_ACCESS 0x0003
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#define BDRV_O_CREAT 0x0004 /* create an empty file */
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#define BDRV_O_SNAPSHOT 0x0008 /* open the file read only and save
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writes in a snapshot */
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#define BDRV_O_FILE 0x0010 /* open as a raw file (do not try to
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use a disk image format on top of
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it (default for
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bdrv_file_open()) */
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typedef struct BlockDriver BlockDriver;
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typedef struct SnapshotInfo QEMUSnapshotInfo;
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typedef struct BlockDriverInfo BlockDriverInfo;
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typedef struct BlockDriverAIOCB BlockDriverAIOCB;
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typedef void BlockDriverCompletionFunc(void *opaque, int ret);
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extern BlockDriver bdrv_raw;
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extern BlockDriver bdrv_host_device;
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extern BlockDriver bdrv_qcow;
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extern BlockDriver bdrv_vvfat;
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void bdrv_init(void);
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int bdrv_create(BlockDriver *drv,
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const char *filename, int64_t size_in_sectors,
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const char *backing_file, int flags);
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BlockDriverState *bdrv_new(const char *device_name);
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void bdrv_delete(BlockDriverState *bs);
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int bdrv_file_open(BlockDriverState **pbs, const char *filename, int flags);
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int bdrv_open(BlockDriverState *bs, const char *filename, int flags);
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int bdrv_read(BlockDriverState *bs, int64_t sector_num,
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uint8_t *buf, int nb_sectors);
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int bdrv_pread(BlockDriverState *bs, int64_t offset,
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void *buf, int count);
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int bdrv_pwrite(BlockDriverState *bs, int64_t offset,
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const void *buf, int count);
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int bdrv_truncate(BlockDriverState *bs, int64_t offset);
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int64_t bdrv_getlength(BlockDriverState *bs);
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void bdrv_flush(BlockDriverState *bs);
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/* timers */
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typedef struct QEMUClock QEMUClock;
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typedef void QEMUTimerCB(void *opaque);
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/* The real time clock should be used only for stuff which does not
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change the virtual machine state, as it is run even if the virtual
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machine is stopped. The real time clock has a frequency of 1000
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Hz. */
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extern QEMUClock *rt_clock;
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int64_t qemu_get_clock(QEMUClock *clock);
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QEMUTimer *qemu_new_timer(QEMUClock *clock, QEMUTimerCB *cb, void *opaque);
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void qemu_del_timer(QEMUTimer *ts);
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void qemu_mod_timer(QEMUTimer *ts, int64_t expire_time);
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int qemu_timer_pending(QEMUTimer *ts);
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extern int64_t ticks_per_sec;
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struct BlockDriverInfo {
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/* in bytes, 0 if irrelevant */
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int cluster_size;
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/* offset at which the VM state can be saved (0 if not possible) */
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int64_t vm_state_offset;
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};
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#endif /* !(BLOCK_H) */
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