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/*
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* <phk@FreeBSD.ORG> wrote this file. As long as you retain this notice you
* can do whatever you want with this stuff. If we meet some day, and you think
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
* ----------------------------------------------------------------------------
*
* $FreeBSD$
*
*/
#ifndef _SYS_DISK_H_
#define _SYS_DISK_H_
#include <sys/ioccom.h>
#ifdef _KERNEL
#ifndef _SYS_DISKSLICE_H_
#include <sys/diskslice.h>
#endif /* _SYS_DISKSLICE_H_ */
#ifndef _SYS_DISKLABEL
#include <sys/disklabel.h>
#endif /* _SYS_DISKLABEL */
#include <sys/queue.h>
struct disk {
u_int d_flags;
u_int d_dsflags;
struct cdevsw *d_devsw;
dev_t d_dev;
struct diskslices *d_slice;
struct disklabel d_label;
LIST_ENTRY(disk) d_list;
void *d_softc;
};
#define DISKFLAG_LOCK 0x1
#define DISKFLAG_WANTED 0x2
dev_t disk_create(int unit, struct disk *disk, int flags, struct cdevsw *cdevsw, struct cdevsw *diskdevsw);
void disk_destroy(dev_t dev);
struct disk *disk_enumerate(struct disk *disk);
void disk_invalidate(struct disk *disk);
#endif
#define DIOCGSECTORSIZE _IOR('d', 128, u_int)
/*-
* Get the sectorsize of the device in bytes. The sectorsize is the
* smallest unit of data which can be transfered from this device.
* Usually this is a power of two but it may not be. (ie: CDROM audio)
*/
#define DIOCGMEDIASIZE _IOR('d', 129, off_t) /* Get media size in bytes */
/*-
* Get the size of the entire device in bytes. This should be a
* multiple of the sectorsize.
*/
#define DIOCGFWSECTORS _IOR('d', 130, u_int) /* Get firmware sectorcount */
/*-
* Get the firmwares notion of number of sectors per track. This
* value is mostly used for compatibility with various ill designed
* disk label formats. Don't use it unless you have to.
*/
#define DIOCGFWHEADS _IOR('d', 131, u_int) /* Get firmware headcount */
/*-
* Get the firmwares notion of number of heads per cylinder. This
* value is mostly used for compatibility with various ill designed
* disk label formats. Don't use it unless you have to.
*/
#define DIOCSKERNELDUMP _IOW('d', 133, u_int) /* Set/Clear kernel dumps */
/*-
* Enable/Disable (the argument is boolean) the device for kernel
* core dumps.
*/
#define DIOCGFRONTSTUFF _IOR('d', 134, off_t)
/*-
* Many disk formats have some amount of space reserved at the
* start of the disk to hold bootblocks, various disklabels and
* similar stuff. This ioctl returns the number of such bytes
* which may apply to the device.
*/
#endif /* _SYS_DISK_H_ */
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