sys/compat/svr4/svr4_filio.c

   1 /*      $NetBSD: svr4_filio.c,v 1.22 2008/07/02 16:45:20 matt Exp $      */
   2
   3 /*-
   4  * Copyright (c) 1994, 2008 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Christos Zoulas.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 __KERNEL_RCSID(0, "$NetBSD: svr4_filio.c,v 1.22 2008/07/02 16:45:20 matt Exp $");
  34
  35 #include <sys/param.h>
  36 #include <sys/proc.h>
  37 #include <sys/systm.h>
  38 #include <sys/file.h>
  39 #include <sys/filedesc.h>
  40 #include <sys/ioctl.h>
  41 #include <sys/termios.h>
  42 #include <sys/tty.h>
  43 #include <sys/socket.h>
  44 #include <sys/mount.h>
  45 #include <net/if.h>
  46 #include <sys/malloc.h>
  47
  48 #include <sys/syscallargs.h>
  49
  50 #include <compat/svr4/svr4_types.h>
  51 #include <compat/svr4/svr4_util.h>
  52 #include <compat/svr4/svr4_signal.h>
  53 #include <compat/svr4/svr4_lwp.h>
  54 #include <compat/svr4/svr4_ucontext.h>
  55 #include <compat/svr4/svr4_syscallargs.h>
  56 #include <compat/svr4/svr4_stropts.h>
  57 #include <compat/svr4/svr4_ioctl.h>
  58 #include <compat/svr4/svr4_filio.h>
  59
  60
  61 int
  62 svr4_fil_ioctl(file_t *fp, struct lwp *l, register_t *retval, int fd, u_long cmd, void *data)
  63 {
  64         struct proc *p = l->l_proc;
  65         int error;
  66         int num;
  67         filedesc_t *fdp = p->p_fd;
  68         fdfile_t *ff;
  69         int (*ctl)(file_t *, u_long,  void *) = fp->f_ops->fo_ioctl;
  70
  71         *retval = 0;
  72         error = 0;
  73
  74         if ((fp = fd_getfile(fd)) == NULL)
  75                 return EBADF;
  76         ff = fdp->fd_dt->dt_ff[fd];
  77         switch (cmd) {
  78         case SVR4_FIOCLEX:
  79                 ff->ff_exclose = true;
  80                 fdp->fd_exclose = true;
  81                 break;
  82
  83         case SVR4_FIONCLEX:
  84                 ff->ff_exclose = false;
  85                 break;
  86
  87         case SVR4_FIOGETOWN:
  88         case SVR4_FIOSETOWN:
  89         case SVR4_FIOASYNC:
  90         case SVR4_FIONBIO:
  91         case SVR4_FIONREAD:
  92                 if ((error = copyin(data, &num, sizeof(num))) != 0)
  93                         break;
  94
  95                 switch (cmd) {
  96                 case SVR4_FIOGETOWN:    cmd = FIOGETOWN; break;
  97                 case SVR4_FIOSETOWN:    cmd = FIOSETOWN; break;
  98                 case SVR4_FIOASYNC:     cmd = FIOASYNC;  break;
  99                 case SVR4_FIONBIO:      cmd = FIONBIO;   break;
 100                 case SVR4_FIONREAD:     cmd = FIONREAD;  break;
 101                 }
 102
 103                 error = (*ctl)(fp, cmd, &num);
 104                 if (error == 0)
 105                         error = copyout(&num, data, sizeof(num));
 106                 break;
 107
 108         default:
 109                 DPRINTF(("Unknown svr4 filio %lx\n", cmd));
 110                 break;
 111         }
 112         fd_putfile(fd);
 113         return error;
 114 }