path: root/arch/sparc64/solaris/ioctl.c

/* $Id: ioctl.c,v 1.17 2002/02/08 03:57:14 davem Exp $
 * ioctl.c: Solaris ioctl emulation.
 *
 * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
 * Copyright (C) 1997,1998 Patrik Rak (prak3264@ss1000.ms.mff.cuni.cz)
 *
 * Streams & timod emulation based on code
 * Copyright (C) 1995, 1996 Mike Jagdis (jaggy@purplet.demon.co.uk)
 *
 * 1999-08-19 Implemented solaris 'm' (mag tape) and
 *            'O' (openprom) ioctls, by Jason Rappleye
 *             (rappleye@ccr.buffalo.edu)
 */

#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/syscalls.h>
#include <linux/ioctl.h>
#include <linux/fs.h>
#include <linux/file.h>
#include <linux/netdevice.h>
#include <linux/mtio.h>
#include <linux/time.h>
#include <linux/compat.h>

#include <net/sock.h>

#include <asm/uaccess.h>
#include <asm/termios.h>
#include <asm/openpromio.h>

#include "conv.h"
#include "socksys.h"

extern asmlinkage int compat_sys_ioctl(unsigned int fd, unsigned int cmd,
	u32 arg);
asmlinkage int solaris_ioctl(unsigned int fd, unsigned int cmd, u32 arg);

extern int timod_putmsg(unsigned int fd, char __user *ctl_buf, int ctl_len,
			char __user *data_buf, int data_len, int flags);
extern int timod_getmsg(unsigned int fd, char __user *ctl_buf, int ctl_maxlen, int __user *ctl_len,
			char __user *data_buf, int data_maxlen, int __user *data_len, int *flags);

/* termio* stuff {{{ */

struct solaris_termios {
	u32	c_iflag;
	u32	c_oflag;
	u32	c_cflag;
	u32	c_lflag;
	u8	c_cc[19];
};

struct solaris_termio {
	u16	c_iflag;
	u16	c_oflag;
	u16	c_cflag;
	u16	c_lflag;
	s8	c_line;
	u8	c_cc[8];
};

struct solaris_termiox {
	u16	x_hflag;
	u16	x_cflag;
	u16	x_rflag[5];
	u16	x_sflag;
};

static u32 solaris_to_linux_cflag(u32 cflag)
{
	cflag &= 0x7fdff000;
	if (cflag & 0x200000) {
		int baud = cflag & 0xf;
		cflag &= ~0x20000f;
		switch (baud) {
		case 0: baud = B57600; break;
		case 1: baud = B76800; break;
		case 2: baud = B115200; break;
		case 3: baud = B153600; break;
		case 4: baud = B230400; break;
		case 5: baud = B307200; break;
		case 6: baud = B460800; break;
		}
		cflag |= CBAUDEX | baud;
	}
	return cflag;
}

static u32 linux_to_solaris_cflag(u32 cflag)
{
	cflag &= ~(CMSPAR | CIBAUD);
	if (cflag & CBAUDEX) {
		int baud = cflag & CBAUD;
		cflag &= ~CBAUD;
		switch (baud) {
		case B57600: baud = 0; break;
		case B76800: baud = 1; break;
		case B115200: baud = 2; break;
		case B153600: baud = 3; break;
		case B230400: baud = 4; break;
		case B307200: baud = 5; break;
		case B460800: baud = 6; break;
		case B614400: baud = 7; break;
		case B921600: baud = 8; break;
#if 0		
		case B1843200: baud = 9; break;
#endif
		}
		cflag |= 0x200000 | baud;
	}
	return cflag;
}

static inline int linux_to_solaris_termio(unsigned int fd, unsigned int cmd, u32 arg)
{
	struct solaris_termio __user *p = A(arg);
	int ret;
	
	ret = sys_ioctl(fd, cmd, (unsigned long)p);
	if (!ret) {
		u32 cflag;
		
		if (__get_user (cflag, &p->c_cflag))
			return -EFAULT;
		cflag = linux_to_solaris_cflag(cflag);
		if (__put_user (cflag, &p->c_cflag))
			return -EFAULT;
	}
	return ret;
}

static int solaris_to_linux_termio(unsigned int fd, unsigned int cmd, u32 arg)
{
	int ret;
	struct solaris_termio s;
	mm_segment_t old_fs = get_fs();
	
	if (copy_from_user (&s, (struct solaris_termio __user *)A(arg), sizeof(struct solaris_termio)))
		return -EFAULT;
	s.c_cflag = solaris_to_linux_cflag(s.c_cflag);
	set_fs(KERNEL_DS);
	ret = sys_ioctl(fd, cmd, (unsigned long)&s);
	set_fs(old_fs);
	return ret;
}

static inline int linux_to_solaris_termios(unsigned int fd, unsigned int cmd, u32 arg)
{
	int ret;
	struct solaris_termios s;
	mm_segment_t old_fs = get_fs();

	set_fs(KERNEL_DS);	
	ret = sys_ioctl(fd, cmd, (unsigned long)&s