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#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/hdreg.h>
#include <linux/errno.h>
#include <asm/segment.h>
#include "../block/blk.h"
#include "scsi.h"
#include "scsi_ioctl.h"
#include "hosts.h"
#include "sd.h"
extern int revalidate_scsidisk(int, int);
int sd_ioctl(struct inode * inode, struct file * file, unsigned int cmd, unsigned long arg)
{
int dev = inode->i_rdev;
int error;
struct Scsi_Host * host;
int diskinfo[4];
struct hd_geometry *loc = (struct hd_geometry *) arg;
switch (cmd) {
case HDIO_REQ: /* Return BIOS disk parameters */
if (!loc) return -EINVAL;
error = verify_area(VERIFY_WRITE, loc, sizeof(*loc));
if (error)
return error;
host = rscsi_disks[MINOR(dev) >> 4].device->host;
diskinfo[0] = 0;
diskinfo[1] = 0;
diskinfo[2] = 0;
if(host->hostt->bios_param != NULL)
host->hostt->bios_param(&rscsi_disks[MINOR(dev) >> 4],
dev,
&diskinfo[0]);
put_fs_byte(diskinfo[0],
(char *) &loc->heads);
put_fs_byte(diskinfo[1],
(char *) &loc->sectors);
put_fs_word(diskinfo[2],
(short *) &loc->cylinders);
put_fs_long(sd[MINOR(inode->i_rdev)].start_sect,
(long *) &loc->start);
return 0;
case BLKGETSIZE: /* Return device size */
if (!arg) return -EINVAL;
error = verify_area(VERIFY_WRITE, (long *) arg, sizeof(long));
if (error)
return error;
put_fs_long(sd[MINOR(inode->i_rdev)].nr_sects,
(long *) arg);
return 0;
case BLKRASET:
if(!suser()) return -EACCES;
if(!inode->i_rdev) return -EINVAL;
if(arg > 0xff) return -EINVAL;
read_ahead[MAJOR(inode->i_rdev)] = arg;
return 0;
case BLKFLSBUF:
if(!suser()) return -EACCES;
if(!inode->i_rdev) return -EINVAL;
fsync_dev(inode->i_rdev);
invalidate_buffers(inode->i_rdev);
return 0;
case BLKRRPART: /* Re-read partition tables */
return revalidate_scsidisk(dev, 1);
default:
return scsi_ioctl(rscsi_disks[MINOR(dev) >> 4].device , cmd, (void *) arg);
}
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-indent-level: 8
* c-brace-imaginary-offset: 0
* c-brace-offset: -8
* c-argdecl-indent: 8
* c-label-offset: -8
* c-continued-statement-offset: 8
* c-continued-brace-offset: 0
* End:
*/
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