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
  31 #include "defs.h"
  32 #include <asm/ioctl.h>
  33
  34 static int
  35 compare(const void *a, const void *b)
  36 {
  37         unsigned long code1 = (long) a;
  38         unsigned long code2 = ((struct_ioctlent *) b)->code;
  39         return (code1 > code2) ? 1 : (code1 < code2) ? -1 : 0;
  40 }
  41
  42 const struct_ioctlent *
  43 ioctl_lookup(long code)
  44 {
  45         struct_ioctlent *iop;
  46
  47         code &= (_IOC_NRMASK<<_IOC_NRSHIFT) | (_IOC_TYPEMASK<<_IOC_TYPESHIFT);
  48         iop = bsearch((void*)code, ioctlent,
  49                         nioctlents, sizeof(ioctlent[0]), compare);
  50         while (iop > ioctlent) {
  51                 iop--;
  52                 if (iop->code != code) {
  53                         iop++;
  54                         break;
  55                 }
  56         }
  57         return iop;
  58 }
  59
  60 const struct_ioctlent *
  61 ioctl_next_match(const struct_ioctlent *iop)
  62 {
  63         long code;
  64
  65         code = iop->code;
  66         iop++;
  67         if (iop < ioctlent + nioctlents && iop->code == code)
  68                 return iop;
  69         return NULL;
  70 }
  71
  72 int
  73 ioctl_decode(struct tcb *tcp, long code, long arg)
  74 {
  75         switch ((code >> 8) & 0xff) {
  76 #if defined(ALPHA) || defined(POWERPC)
  77         case 'f': case 't': case 'T':
  78 #else /* !ALPHA */
  79         case 0x54:
  80 #endif /* !ALPHA */
  81                 return term_ioctl(tcp, code, arg);
  82         case 0x89:
  83                 return sock_ioctl(tcp, code, arg);
  84         case 'p':
  85                 return rtc_ioctl(tcp, code, arg);
  86         case 0x03:
  87         case 0x12:
  88                 return block_ioctl(tcp, code, arg);
  89 #ifdef HAVE_SCSI_SG_H
  90         case 0x22:
  91                 return scsi_ioctl(tcp, code, arg);
  92 #endif
  93         case 'L':
  94                 return loop_ioctl(tcp, code, arg);
  95         case 'M':
  96                 return mtd_ioctl(tcp, code, arg);
  97         case 'o':
  98         case 'O':
  99                 return ubi_ioctl(tcp, code, arg);
 100         case '=':
 101                 return ptp_ioctl(tcp, code, arg);
 102         default:
 103                 break;
 104         }
 105         return 0;
 106 }
 107
 108 /*
 109  * Registry of ioctl characters, culled from
 110  *      @(#)ioccom.h 1.7 89/06/16 SMI; from UCB ioctl.h 7.1 6/4/86
 111  *
 112  * char file where defined              notes
 113  * ---- ------------------              -----
 114  *   F  sun/fbio.h
 115  *   G  sun/gpio.h
 116  *   H  vaxif/if_hy.h
 117  *   M  sundev/mcpcmd.h                 *overlap*
 118  *   M  sys/modem.h                     *overlap*
 119  *   S  sys/stropts.h
 120  *   T  sys/termio.h                    -no overlap-
 121  *   T  sys/termios.h                   -no overlap-
 122  *   V  sundev/mdreg.h
 123  *   a  vaxuba/adreg.h
 124  *   d  sun/dkio.h                      -no overlap with sys/des.h-
 125  *   d  sys/des.h                       (possible overlap)
 126  *   d  vax/dkio.h                      (possible overlap)
 127  *   d  vaxuba/rxreg.h                  (possible overlap)
 128  *   f  sys/filio.h
 129  *   g  sunwindow/win_ioctl.h           -no overlap-
 130  *   g  sunwindowdev/winioctl.c         !no manifest constant! -no overlap-
 131  *   h  sundev/hrc_common.h
 132  *   i  sys/sockio.h                    *overlap*
 133  *   i  vaxuba/ikreg.h                  *overlap*
 134  *   k  sundev/kbio.h
 135  *   m  sundev/msio.h                   (possible overlap)
 136  *   m  sundev/msreg.h                  (possible overlap)
 137  *   m  sys/mtio.h                      (possible overlap)
 138  *   n  sun/ndio.h
 139  *   p  net/nit_buf.h                   (possible overlap)
 140  *   p  net/nit_if.h                    (possible overlap)
 141  *   p  net/nit_pf.h                    (possible overlap)
 142  *   p  sundev/fpareg.h                 (possible overlap)
 143  *   p  sys/sockio.h                    (possible overlap)
 144  *   p  vaxuba/psreg.h                  (possible overlap)
 145  *   q  sun/sqz.h
 146  *   r  sys/sockio.h
 147  *   s  sys/sockio.h
 148  *   t  sys/ttold.h                     (possible overlap)
 149  *   t  sys/ttycom.h                    (possible overlap)
 150  *   v  sundev/vuid_event.h             *overlap*
 151  *   v  sys/vcmd.h                      *overlap*
 152  *
 153  * End of Registry
 154  */