scsicam.c File Reference

#include <linux/module.h>
#include <linux/slab.h>
#include <linux/fs.h>
#include <linux/genhd.h>
#include <linux/kernel.h>
#include <linux/blkdev.h>
#include <asm/unaligned.h>
#include <scsi/scsicam.h>

Go to the source code of this file.

Functions
unsigned char *	scsi_bios_ptable (struct block_device *dev)
	EXPORT_SYMBOL (scsi_bios_ptable)
int	scsicam_bios_param (struct block_device *bdev, sector_t capacity, int *ip)
	EXPORT_SYMBOL (scsicam_bios_param)
int	scsi_partsize (unsigned char *buf, unsigned long capacity, unsigned int *cyls, unsigned int *hds, unsigned int *secs)
	EXPORT_SYMBOL (scsi_partsize)

Function Documentation

EXPORT_SYMBOL

(

scsi_bios_ptable

)

EXPORT_SYMBOL

(

scsicam_bios_param

)

EXPORT_SYMBOL

(

scsi_partsize

)

unsigned char* scsi_bios_ptable

(

struct block_device *

dev

)

scsi_bios_ptable - Read PC partition table out of first sector of device. : from this device

Description: Reads the first sector from the device and returns %0x42 bytes starting at offset %0x1be. Returns: partition table in kmalloc(GFP_KERNEL) memory, or NULL on error.

Definition at line 35 of file scsicam.c.

int scsi_partsize	(	unsigned char *	buf,
		unsigned long	capacity,
		unsigned int *	cyls,
		unsigned int *	hds,
		unsigned int *	secs
	)

scsi_partsize - Parse cylinders/heads/sectors from PC partition table : partition table, see scsi_bios_ptable() : size of the disk in sectors : put cylinders here : put heads here : put sectors here

Description: determine the BIOS mapping/geometry used to create the partition table, storing the results in *cyls, *hds, and *secs

Returns: -1 on failure, 0 on success.

Definition at line 125 of file scsicam.c.

int scsicam_bios_param	(	struct block_device *	bdev,
		sector_t	capacity,
		int *	ip
	)

scsicam_bios_param - Determine geometry of a disk in cylinders/heads/sectors. : which device : size of the disk in sectors : return value: ip[0]=heads, ip[1]=sectors, ip[2]=cylinders

Description : determine the BIOS mapping/geometry used for a drive in a SCSI-CAM system, storing the results in ip as required by the HDIO_GETGEO ioctl().

Returns : -1 on failure, 0 on success.

Definition at line 67 of file scsicam.c.