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sunos_ioctl.c

/* $Id: sunos_ioctl.c,v 1.34 2000/09/03 14:10:56 anton Exp $
 * sunos_ioctl.c: The Linux Operating system: SunOS ioctl compatibility.
 * 
 * Copyright (C) 1995 Miguel de Icaza (miguel@nuclecu.unam.mx)
 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
 */

#include <asm/uaccess.h>

#include <linux/sched.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/termios.h>
#include <linux/tty.h>
#include <linux/ioctl.h>
#include <linux/route.h>
#include <linux/sockios.h>
#include <linux/if.h>
#include <linux/netdevice.h>
#include <linux/if_arp.h>
#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/smp.h>
#include <linux/syscalls.h>
#include <linux/file.h>

#if 0
extern char sunkbd_type;
extern char sunkbd_layout;
#endif

/* NR_OPEN is now larger and dynamic in recent kernels. */
#define SUNOS_NR_OPEN   256

asmlinkage int sunos_ioctl (int fd, unsigned long cmd, unsigned long arg)
{
      int ret = -EBADF;

      if (fd >= SUNOS_NR_OPEN || !fcheck(fd))
            goto out;

      /* First handle an easy compat. case for tty ldisc. */
      if (cmd == TIOCSETD) {
            int __user *p;
            int ntty = N_TTY, tmp;
            mm_segment_t oldfs;

            p = (int __user *) arg;
            ret = -EFAULT;
            if (get_user(tmp, p))
                  goto out;
            if (tmp == 2) {
                  oldfs = get_fs();
                  set_fs(KERNEL_DS);
                  ret = sys_ioctl(fd, cmd, (unsigned long) &ntty);
                  set_fs(oldfs);
                  ret = (ret == -EINVAL ? -EOPNOTSUPP : ret);
                  goto out;
            }
      }

      /* Binary compatibility is good American knowhow fuckin' up. */
      if (cmd == TIOCNOTTY) {
            ret = sys_setsid();
            goto out;
      }

      /* SunOS networking ioctls. */
      switch (cmd) {
      case _IOW('r', 10, struct rtentry):
            ret = sys_ioctl(fd, SIOCADDRT, arg);
            goto out;
      case _IOW('r', 11, struct rtentry):
            ret = sys_ioctl(fd, SIOCDELRT, arg);
            goto out;
      case _IOW('i', 12, struct ifreq):
            ret = sys_ioctl(fd, SIOCSIFADDR, arg);
            goto out;
      case _IOWR('i', 13, struct ifreq):
            ret = sys_ioctl(fd, SIOCGIFADDR, arg);
            goto out;
      case _IOW('i', 14, struct ifreq):
            ret = sys_ioctl(fd, SIOCSIFDSTADDR, arg);
            goto out;
      case _IOWR('i', 15, struct ifreq):
            ret = sys_ioctl(fd, SIOCGIFDSTADDR, arg);
            goto out;
      case _IOW('i', 16, struct ifreq):
            ret = sys_ioctl(fd, SIOCSIFFLAGS, arg);
            goto out;
      case _IOWR('i', 17, struct ifreq):
            ret = sys_ioctl(fd, SIOCGIFFLAGS, arg);
            goto out;
      case _IOW('i', 18, struct ifreq):
            ret = sys_ioctl(fd, SIOCSIFMEM, arg);
            goto out;
      case _IOWR('i', 19, struct ifreq):
            ret = sys_ioctl(fd, SIOCGIFMEM, arg);
            goto out;
      case _IOWR('i', 20, struct ifconf):
            ret = sys_ioctl(fd, SIOCGIFCONF, arg);
            goto out;
      case _IOW('i', 21, struct ifreq): /* SIOCSIFMTU */
            ret = sys_ioctl(fd, SIOCSIFMTU, arg);
            goto out;
      case _IOWR('i', 22, struct ifreq): /* SIOCGIFMTU */
            ret = sys_ioctl(fd, SIOCGIFMTU, arg);
            goto out;

      case _IOWR('i', 23, struct ifreq):
            ret = sys_ioctl(fd, SIOCGIFBRDADDR, arg);
            goto out;
      case _IOW('i', 24, struct ifreq):
            ret = sys_ioctl(fd, SIOCSIFBRDADDR, arg);
            goto out;
      case _IOWR('i', 25, struct ifreq):
            ret = sys_ioctl(fd, SIOCGIFNETMASK, arg);
            goto out;
      case _IOW('i', 26, struct ifreq):
            ret = sys_ioctl(fd, SIOCSIFNETMASK, arg);
            goto out;
      case _IOWR('i', 27, struct ifreq):
            ret = sys_ioctl(fd, SIOCGIFMETRIC, arg);
            goto out;
      case _IOW('i', 28, struct ifreq):
            ret = sys_ioctl(fd, SIOCSIFMETRIC, arg);
            goto out;

      case _IOW('i', 30, struct arpreq):
            ret = sys_ioctl(fd, SIOCSARP, arg);
            goto out;
      case _IOWR('i', 31, struct arpreq):
            ret = sys_ioctl(fd, SIOCGARP, arg);
            goto out;
      case _IOW('i', 32, struct arpreq):
            ret = sys_ioctl(fd, SIOCDARP, arg);
            goto out;

      case _IOW('i', 40, struct ifreq): /* SIOCUPPER */
      case _IOW('i', 41, struct ifreq): /* SIOCLOWER */
      case _IOW('i', 44, struct ifreq): /* SIOCSETSYNC */
      case _IOW('i', 45, struct ifreq): /* SIOCGETSYNC */
      case _IOW('i', 46, struct ifreq): /* SIOCSSDSTATS */
      case _IOW('i', 47, struct ifreq): /* SIOCSSESTATS */
      case _IOW('i', 48, struct ifreq): /* SIOCSPROMISC */
            ret = -EOPNOTSUPP;
            goto out;

      case _IOW('i', 49, struct ifreq):
            ret = sys_ioctl(fd, SIOCADDMULTI, arg);
            goto out;
      case _IOW('i', 50, struct ifreq):
            ret = sys_ioctl(fd, SIOCDELMULTI, arg);
            goto out;

      /* FDDI interface ioctls, unsupported. */
            
      case _IOW('i', 51, struct ifreq): /* SIOCFDRESET */
      case _IOW('i', 52, struct ifreq): /* SIOCFDSLEEP */
      case _IOW('i', 53, struct ifreq): /* SIOCSTRTFMWAR */
      case _IOW('i', 54, struct ifreq): /* SIOCLDNSTRTFW */
      case _IOW('i', 55, struct ifreq): /* SIOCGETFDSTAT */
      case _IOW('i', 56, struct ifreq): /* SIOCFDNMIINT */
      case _IOW('i', 57, struct ifreq): /* SIOCFDEXUSER */
      case _IOW('i', 58, struct ifreq): /* SIOCFDGNETMAP */
      case _IOW('i', 59, struct ifreq): /* SIOCFDGIOCTL */
            printk("FDDI ioctl, returning EOPNOTSUPP\n");
            ret = -EOPNOTSUPP;
            goto out;

      case _IOW('t', 125, int):
            /* More stupid tty sunos ioctls, just
             * say it worked.
             */
            ret = 0;
            goto out;
      /* Non posix grp */
      case _IOW('t', 118, int): {
            int oldval, newval, __user *ptr;

            cmd = TIOCSPGRP;
            ptr = (int __user *) arg;
            ret = -EFAULT;
            if (get_user(oldval, ptr))
                  goto out;
            ret = sys_ioctl(fd, cmd, arg);
            __get_user(newval, ptr);
            if (newval == -1) {
                  __put_user(oldval, ptr);
                  ret = -EIO;
            }
            if (ret == -ENOTTY)
                  ret = -EIO;
            goto out;
      }

      case _IOR('t', 119, int): {
            int oldval, newval, __user *ptr;

            cmd = TIOCGPGRP;
            ptr = (int __user *) arg;
            ret = -EFAULT;
            if (get_user(oldval, ptr))
                  goto out;
            ret = sys_ioctl(fd, cmd, arg);
            __get_user(newval, ptr);
            if (newval == -1) {
                  __put_user(oldval, ptr);
                  ret = -EIO;
            }
            if (ret == -ENOTTY)
                  ret = -EIO;
            goto out;
      }
      }

#if 0
      if ((cmd & 0xff00) == ('k' << 8)) {
            printk ("[[KBIO: %8.8x\n", (unsigned int) cmd);
      }
#endif

      ret = sys_ioctl(fd, cmd, arg);
      /* so stupid... */
      ret = (ret == -EINVAL ? -EOPNOTSUPP : ret);
out:
      return ret;
}



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