1 /* 2 * Copyright (c) 2015 Dmitry V. Levin <ldv (at) altlinux.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <stdio.h> 29 #include <asm/ioctl.h> 30 31 typedef unsigned short u16; 32 33 static const char * 34 dir2str(const char *name, u16 dir) 35 { 36 switch (dir) { 37 #define CASE(x) case x: return #x 38 CASE(_IOC_NONE); 39 CASE(_IOC_READ); 40 CASE(_IOC_WRITE); 41 CASE(_IOC_READ|_IOC_WRITE); 42 } 43 44 static char buf[3 + sizeof(dir) * 2]; 45 fprintf(stderr, 46 "print_ioctlents: WARNING: invalid dir 0x%02x in %s\n", 47 dir, name); 48 snprintf(buf, sizeof(buf), "0x%02x", dir); 49 return buf; 50 } 51 52 void 53 print_ioctlent(const char *info, const char *name, 54 u16 dir, u16 type, u16 nr, u16 size) 55 { 56 unsigned int type_nr = 57 ((unsigned) type << _IOC_TYPESHIFT) | 58 ((unsigned) nr << _IOC_NRSHIFT); 59 60 if (dir & ~_IOC_DIRMASK) 61 fprintf(stderr, 62 "print_ioctlents: WARNING: dir 0x%02x is out of mask 0x%02x in %s\n", 63 dir, _IOC_DIRMASK, name); 64 if (type & ~_IOC_TYPEMASK) 65 fprintf(stderr, 66 "print_ioctlents: WARNING: type 0x%02x is out of mask 0x%02x in %s\n", 67 type, _IOC_TYPEMASK, name); 68 if (nr & ~_IOC_NRMASK) 69 fprintf(stderr, 70 "print_ioctlents: WARNING: nr 0x%02x is out of mask 0x%02x in %s\n", 71 nr, _IOC_NRMASK, name); 72 if (size & ~_IOC_SIZEMASK) 73 fprintf(stderr, 74 "print_ioctlents: WARNING: size 0x%02x is out of mask 0x%02x in %s\n", 75 size, _IOC_SIZEMASK, name); 76 77 printf("{ \"%s\", \"%s\", %s, 0x%04x, 0x%02x },\n", 78 info, name, dir2str(name, dir), type_nr, size); 79 } 80
