Differential D4143 Diff 10572 head/sys/boot/common/disk.h

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head/sys/boot/common/disk.h

Show First 20 Lines • Show All 83 Lines • ▼ Show 20 Lines	struct disk_devdesc
int d_type;		int d_type;
int d_unit;		int d_unit;
void *d_opendata;		void *d_opendata;
int d_slice;		int d_slice;
int d_partition;		int d_partition;
off_t d_offset;		off_t d_offset;
};		};

		enum disk_ioctl {
		IOCTL_GET_BLOCKS,
		IOCTL_GET_BLOCK_SIZE
		};

/*		/*
* Parse disk metadata and initialise dev->d_offset.		* Parse disk metadata and initialise dev->d_offset.
*/		*/
extern int disk_open(struct disk_devdesc *dev, off_t mediasize,		extern int disk_open(struct disk_devdesc *dev, off_t mediasize,
u_int sectorsize, u_int flags);		u_int sectorsize, u_int flags);
#define DISK_F_NOCACHE 0x0001 /* Do not use metadata caching */		#define DISK_F_NOCACHE 0x0001 /* Do not use metadata caching */
extern int disk_close(struct disk_devdesc *dev);		extern int disk_close(struct disk_devdesc *dev);
extern void disk_cleanup(const struct devsw *d_dev);		extern void disk_cleanup(const struct devsw *d_dev);
		extern int disk_ioctl(struct disk_devdesc dev, u_long cmd, void buf);
		extern int disk_read(struct disk_devdesc dev, void buf, off_t offset,
		u_int blocks);
		extern int disk_write(struct disk_devdesc dev, void buf, off_t offset,
		u_int blocks);

/*		/*
* Print information about slices on a disk.		* Print information about slices on a disk.
*/		*/
extern void disk_print(struct disk_devdesc dev, char prefix, int verbose);		extern void disk_print(struct disk_devdesc dev, char prefix, int verbose);
extern char* disk_fmtdev(struct disk_devdesc *dev);		extern char* disk_fmtdev(struct disk_devdesc *dev);
extern int disk_parsedev(struct disk_devdesc dev, const char devspec,		extern int disk_parsedev(struct disk_devdesc dev, const char devspec,
const char **path);		const char **path);