granicus.if.org Git - strace/blob - ioctl.c

   1 /*
   2  * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
   3  * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
   4  * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
   5  * Copyright (c) 1996-2001 Wichert Akkerman <wichert@cistron.nl>
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. The name of the author may not be used to endorse or promote products
  17  *    derived from this software without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  *      $Id$
  31  */
  32
  33 #include "defs.h"
  34
  35 #include <asm/ioctl.h>
  36
  37 static int
  38 compare(const void *a, const void *b)
  39 {
  40         unsigned long code1 = ((struct ioctlent *) a)->code;
  41         unsigned long code2 = ((struct ioctlent *) b)->code;
  42         return (code1 > code2) ? 1 : (code1 < code2) ? -1 : 0;
  43 }
  44
  45 const struct ioctlent *
  46 ioctl_lookup(long code)
  47 {
  48         struct ioctlent *iop, ioent;
  49
  50         ioent.code = code;
  51         ioent.code &= (_IOC_NRMASK<<_IOC_NRSHIFT) | (_IOC_TYPEMASK<<_IOC_TYPESHIFT);
  52         iop = (struct ioctlent *) bsearch((char *) &ioent, (char *) ioctlent,
  53                         nioctlents, sizeof(struct ioctlent), compare);
  54         while (iop > ioctlent)
  55                 if ((--iop)->code != ioent.code) {
  56                         iop++;
  57                         break;
  58                 }
  59         return iop;
  60 }
  61
  62 const struct ioctlent *
  63 ioctl_next_match(const struct ioctlent *iop)
  64 {
  65         long code;
  66
  67         code = (iop++)->code;
  68         if (iop < ioctlent + nioctlents && iop->code == code)
  69                 return iop;
  70         return NULL;
  71 }
  72
  73 int
  74 ioctl_decode(struct tcb *tcp, long code, long arg)
  75 {
  76         switch ((code >> 8) & 0xff) {
  77 #if defined(ALPHA) || defined(POWERPC)
  78         case 'f': case 't': case 'T':
  79 #else /* !ALPHA */
  80         case 0x54:
  81 #endif /* !ALPHA */
  82                 return term_ioctl(tcp, code, arg);
  83         case 0x89:
  84                 return sock_ioctl(tcp, code, arg);
  85         case 'p':
  86                 return rtc_ioctl(tcp, code, arg);
  87         case 0x03:
  88         case 0x12:
  89                 return block_ioctl(tcp, code, arg);
  90         case 0x22:
  91                 return scsi_ioctl(tcp, code, arg);
  92         default:
  93                 break;
  94         }
  95         return 0;
  96 }
  97
  98 /*
  99  * Registry of ioctl characters, culled from
 100  *      @(#)ioccom.h 1.7 89/06/16 SMI; from UCB ioctl.h 7.1 6/4/86
 101  *
 102  * char file where defined              notes
 103  * ---- ------------------              -----
 104  *   F  sun/fbio.h
 105  *   G  sun/gpio.h
 106  *   H  vaxif/if_hy.h
 107  *   M  sundev/mcpcmd.h                 *overlap*
 108  *   M  sys/modem.h                     *overlap*
 109  *   S  sys/stropts.h
 110  *   T  sys/termio.h                    -no overlap-
 111  *   T  sys/termios.h                   -no overlap-
 112  *   V  sundev/mdreg.h
 113  *   a  vaxuba/adreg.h
 114  *   d  sun/dkio.h                      -no overlap with sys/des.h-
 115  *   d  sys/des.h                       (possible overlap)
 116  *   d  vax/dkio.h                      (possible overlap)
 117  *   d  vaxuba/rxreg.h                  (possible overlap)
 118  *   f  sys/filio.h
 119  *   g  sunwindow/win_ioctl.h           -no overlap-
 120  *   g  sunwindowdev/winioctl.c         !no manifest constant! -no overlap-
 121  *   h  sundev/hrc_common.h
 122  *   i  sys/sockio.h                    *overlap*
 123  *   i  vaxuba/ikreg.h                  *overlap*
 124  *   k  sundev/kbio.h
 125  *   m  sundev/msio.h                   (possible overlap)
 126  *   m  sundev/msreg.h                  (possible overlap)
 127  *   m  sys/mtio.h                      (possible overlap)
 128  *   n  sun/ndio.h
 129  *   p  net/nit_buf.h                   (possible overlap)
 130  *   p  net/nit_if.h                    (possible overlap)
 131  *   p  net/nit_pf.h                    (possible overlap)
 132  *   p  sundev/fpareg.h                 (possible overlap)
 133  *   p  sys/sockio.h                    (possible overlap)
 134  *   p  vaxuba/psreg.h                  (possible overlap)
 135  *   q  sun/sqz.h
 136  *   r  sys/sockio.h
 137  *   s  sys/sockio.h
 138  *   t  sys/ttold.h                     (possible overlap)
 139  *   t  sys/ttycom.h                    (possible overlap)
 140  *   v  sundev/vuid_event.h             *overlap*
 141  *   v  sys/vcmd.h                      *overlap*
 142  *
 143  * End of Registry
 144  */