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      1 /*
      2  * Copyright (c) 1991, 1992 Paul Kranenburg <pk (at) cs.few.eur.nl>
      3  * Copyright (c) 1993 Branko Lankester <branko (at) hacktic.nl>
      4  * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs (at) world.std.com>
      5  * Copyright (c) 1996-2001 Wichert Akkerman <wichert (at) 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  */
    155