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/* $Id: ia32_ioctl.c,v 1.25 2002/10/11 07:17:06 ak Exp $
* ioctl32.c: Conversion between 32bit and 64bit native ioctls.
*
* Copyright (C) 1997-2000 Jakub Jelinek (jakub@redhat.com)
* Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be)
* Copyright (C) 2001,2002 Andi Kleen, SuSE Labs
*
* These routines maintain argument size conversion between 32bit and 64bit
* ioctls.
*/
#define INCLUDES
#include <linux/syscalls.h>
#include "compat_ioctl.c"
#include <asm/mtrr.h>
#include <asm/ia32.h>
#define CODE
#include "compat_ioctl.c"
#ifndef TIOCGDEV
#define TIOCGDEV _IOR('T',0x32, unsigned int)
#endif
static int tiocgdev(unsigned fd, unsigned cmd, unsigned int __user *ptr)
{
struct file *file = fget(fd);
struct tty_struct *real_tty;
if (!file)
return -EBADF;
if (file->f_op->ioctl != tty_ioctl)
return -EINVAL;
real_tty = (struct tty_struct *)file->private_data;
if (!real_tty)
return -EINVAL;
return put_user(new_encode_dev(tty_devnum(real_tty)), ptr);
}
#define RTC_IRQP_READ32 _IOR('p', 0x0b, unsigned int) /* Read IRQ rate */
#define RTC_IRQP_SET32 _IOW('p', 0x0c, unsigned int) /* Set IRQ rate */
#define RTC_EPOCH_READ32 _IOR('p', 0x0d, unsigned) /* Read epoch */
#define RTC_EPOCH_SET32 _IOW('p', 0x0e, unsigned) /* Set epoch */
static int rtc32_ioctl(unsigned fd, unsigned cmd, unsigned long arg)
{
unsigned long val;
mm_segment_t oldfs = get_fs();
int ret;
switch (cmd) {
case RTC_IRQP_READ32:
set_fs(KERNEL_DS);
ret = sys_ioctl(fd, RTC_IRQP_READ, (unsigned long)&val);
set_fs(oldfs);
if (!ret)
ret = put_user(val, (unsigned int __user *) arg);
return ret;
case RTC_IRQP_SET32:
cmd = RTC_IRQP_SET;
break;
case RTC_EPOCH_READ32:
set_fs(KERNEL_DS);
ret = sys_ioctl(fd, RTC_EPOCH_READ, (unsigned long) &val);
set_fs(oldfs);
if (!ret)
ret = put_user(val, (unsigned int __user *) arg);
return ret;
case RTC_EPOCH_SET32:
cmd = RTC_EPOCH_SET;
break;
}
return sys_ioctl(fd,cmd,arg);
}
/* /proc/mtrr ioctls */
struct mtrr_sentry32
{
compat_ulong_t base; /* Base address */
compat_uint_t size; /* Size of region */
compat_uint_t type; /* Type of region */
};
struct mtrr_gentry32
{
compat_ulong_t regnum; /* Register number */
compat_uint_t base; /* Base address */
compat_uint_t size; /* Size of region */
compat_uint_t type; /* Type of region */
};
#define MTRR_IOCTL_BASE 'M'
#define MTRRIOC32_ADD_ENTRY _IOW(MTRR_IOCTL_BASE, 0, struct mtrr_sentry32)
#define MTRRIOC32_SET_ENTRY _IOW(MTRR_IOCTL_BASE, 1, struct mtrr_sentry32)
#define MTRRIOC32_DEL_ENTRY _IOW(MTRR_IOCTL_BASE, 2, struct mtrr_sentry32)
#define MTRRIOC32_GET_ENTRY _IOWR(MTRR_IOCTL_BASE, 3, struct mtrr_gentry32)
#define MTRRIOC32_KILL_ENTRY _IOW(MTRR_IOCTL_BASE, 4, struct mtrr_sentry32)
#define MTRRIOC32_ADD_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 5, struct mtrr_sentry32)
#define MTRRIOC32_SET_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 6, struct mtrr_sentry32)
#define MTRRIOC32_DEL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 7, struct mtrr_sentry32)
#define MTRRIOC32_GET_PAGE_ENTRY _IOWR(MTRR_IOCTL_BASE, 8, struct mtrr_gentry32)
#define MTRRIOC32_KILL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 9, struct mtrr_sentry32)
static int mtrr_ioctl32(unsigned int fd, unsigned int cmd, unsigned long arg)
{
struct mtrr_gentry g;
struct mtrr_sentry s;
int get = 0, err = 0;
struct mtrr_gentry32 __user *g32 = (struct mtrr_gentry32 __user *)arg;
mm_segment_t oldfs = get_fs();
switch (cmd) {
#define SET(x) case MTRRIOC32_ ## x ## _ENTRY: cmd = MTRRIOC_ ## x ## _ENTRY; break
#define GET(x) case MTRRIOC32_ ## x ## _ENTRY: cmd = MTRRIOC_ ## x ## _ENTRY; get=1; break
SET(ADD);
SET(SET);
SET(DEL);
GET(GET);
SET(KILL);
SET(ADD_PAGE);
SET(SET_PAGE);
SET(DEL_PAGE);
GET(GET_PAGE);
SET(KILL_PAGE);
}
if (get) {
err = get_user(g.regnum, &g32->regnum);
err |= get_user(g.base, &g32->base);
err |= get_user(g.size, &g32->size);
err |= get_user(g.type, &g32->type);
arg = (unsigned long)&g;
} else {
struct mtrr_sentry32 __user *s32 = (struct mtrr_sentry32 __user *)arg;
err = get_user(s.base, &s32->base);
err |= get_user(s.size, &s32->size);
err |= get_user(s.type, &s32->type);
arg = (unsigned long)&s;
}
if (err) return err;
set_fs(KERNEL_DS);
err = sys_ioctl(fd, cmd, arg);
set_fs(oldfs);
if (!err && get) {
err = put_user(g.base, &g32->base);
err |= put_user(g.size, &g32->size);
err |= put_user(g.regnum, &g32->regnum);
err |= put_user(g.type, &g32->type);
}
return err;
}
#define HANDLE_IOCTL(cmd,handler) { (cmd), (ioctl_trans_handler_t)(handler) },
#define COMPATIBLE_IOCTL(cmd) HANDLE_IOCTL(cmd,sys_ioctl)
struct ioctl_trans ioctl_start[] = {
#include <linux/compat_ioctl.h>
#define DECLARES
#include "compat_ioctl.c"
COMPATIBLE_IOCTL(HDIO_SET_KEEPSETTINGS)
COMPATIBLE_IOCTL(HDIO_SCAN_HWIF)
COMPATIBLE_IOCTL(BLKRASET)
COMPATIBLE_IOCTL(0x4B50) /* KDGHWCLK - not in the kernel, but don't complain */
COMPATIBLE_IOCTL(0x4B51) /* KDSHWCLK - not in the kernel, but don't complain */
COMPATIBLE_IOCTL(FIOQSIZE)
/* And these ioctls need translation */
HANDLE_IOCTL(TIOCGDEV, tiocgdev)
/* realtime device */
HANDLE_IOCTL(RTC_IRQP_READ, rtc32_ioctl)
HANDLE_IOCTL(RTC_IRQP_READ32,rtc32_ioctl)
HANDLE_IOCTL(RTC_IRQP_SET32, rtc32_ioctl)
HANDLE_IOCTL(RTC_EPOCH_READ32, rtc32_ioctl)
HANDLE_IOCTL(RTC_EPOCH_SET32, rtc32_ioctl)
/* take care of sizeof(sizeof()) breakage */
/* mtrr */
HANDLE_IOCTL(MTRRIOC32_ADD_ENTRY, mtrr_ioctl32)
HANDLE_IOCTL(MTRRIOC32_SET_ENTRY, mtrr_ioctl32)
HANDLE_IOCTL(MTRRIOC32_DEL_ENTRY, mtrr_ioctl32)
HANDLE_IOCTL(MTRRIOC32_GET_ENTRY, mtrr_ioctl32)
HANDLE_IOCTL(MTRRIOC32_KILL_ENTRY, mtrr_ioctl32)
HANDLE_IOCTL(MTRRIOC32_ADD_PAGE_ENTRY, mtrr_ioctl32)
HANDLE_IOCTL(MTRRIOC32_SET_PAGE_ENTRY, mtrr_ioctl32)
HANDLE_IOCTL(MTRRIOC32_DEL_PAGE_ENTRY, mtrr_ioctl32)
HANDLE_IOCTL(MTRRIOC32_GET_PAGE_ENTRY, mtrr_ioctl32)
HANDLE_IOCTL(MTRRIOC32_KILL_PAGE_ENTRY, mtrr_ioctl32)
};
int ioctl_table_size = ARRAY_SIZE(ioctl_start);
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