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 <sys/personality.h> 30 31 int main(void) 32 { 33 const unsigned int good_type = PER_BSD; 34 const char *good_type_str = "PER_BSD"; 35 36 const unsigned int bad_type = 0x1f; 37 const char *bad_type_str = "0x1f /\\* PER_\\?\\?\\? \\*/"; 38 39 const unsigned int good_flags = 40 SHORT_INODE | WHOLE_SECONDS | STICKY_TIMEOUTS; 41 const char *good_flags_str = 42 "SHORT_INODE\\|WHOLE_SECONDS\\|STICKY_TIMEOUTS"; 43 44 const unsigned int bad_flags = 0x10000; 45 const char *bad_flags_str = "0x10000"; 46 47 const unsigned int saved_pers = personality(0xffffffff); 48 printf("personality\\(0xffffffff\\) = %#x \\([^)]*\\)\n", saved_pers); 49 50 /* PER_LINUX */ 51 personality(PER_LINUX); 52 printf("personality\\(PER_LINUX\\) = %#x \\([^)]*\\)\n", saved_pers); 53 54 personality(0xffffffff); 55 puts("personality\\(0xffffffff\\) = 0 \\(PER_LINUX\\)"); 56 57 personality(good_flags); 58 printf("personality\\(PER_LINUX\\|%s\\) = 0 \\(PER_LINUX\\)\n", 59 good_flags_str); 60 61 personality(bad_flags); 62 printf("personality\\(PER_LINUX\\|%s\\)" 63 " = %#x \\(PER_LINUX\\|%s\\)\n", 64 bad_flags_str, good_flags, good_flags_str); 65 66 personality(good_flags | bad_flags); 67 printf("personality\\(PER_LINUX\\|%s\\|%s\\)" 68 " = %#x \\(PER_LINUX\\|%s\\)\n", 69 good_flags_str, bad_flags_str, bad_flags, bad_flags_str); 70 71 /* another valid type */ 72 personality(good_type); 73 printf("personality\\(%s\\) = %#x \\(PER_LINUX\\|%s\\|%s\\)\n", 74 good_type_str, good_flags | bad_flags, 75 good_flags_str, bad_flags_str); 76 77 personality(good_type | good_flags); 78 printf("personality\\(%s\\|%s\\) = %#x \\(%s\\)\n", 79 good_type_str, good_flags_str, good_type, good_type_str); 80 81 personality(good_type | bad_flags); 82 printf("personality\\(%s\\|%s\\) = %#x \\(%s\\|%s\\)\n", 83 good_type_str, bad_flags_str, good_type | good_flags, 84 good_type_str, good_flags_str); 85 86 personality(good_type | good_flags | bad_flags); 87 printf("personality\\(%s\\|%s\\|%s\\) = %#x \\(%s\\|%s\\)\n", 88 good_type_str, good_flags_str, bad_flags_str, 89 good_type | bad_flags, 90 good_type_str, bad_flags_str); 91 92 /* invalid type */ 93 personality(bad_type); 94 printf("personality\\(%s\\) = %#x \\(%s\\|%s\\|%s\\)\n", 95 bad_type_str, good_type | good_flags | bad_flags, 96 good_type_str, good_flags_str, bad_flags_str); 97 98 personality(bad_type | good_flags); 99 printf("personality\\(%s\\|%s\\) = %#x \\(%s\\)\n", 100 bad_type_str, good_flags_str, bad_type, bad_type_str); 101 102 personality(bad_type | bad_flags); 103 printf("personality\\(%s\\|%s\\) = %#x \\(%s\\|%s\\)\n", 104 bad_type_str, bad_flags_str, bad_type | good_flags, 105 bad_type_str, good_flags_str); 106 107 personality(bad_type | good_flags | bad_flags); 108 printf("personality\\(%s\\|%s\\|%s\\) = %#x \\(%s\\|%s\\)\n", 109 bad_type_str, good_flags_str, bad_flags_str, 110 bad_type | bad_flags, bad_type_str, bad_flags_str); 111 112 personality(saved_pers); 113 printf("personality\\([^)]*\\) = %#x \\(%s\\|%s\\|%s\\)\n", 114 bad_type | good_flags | bad_flags, 115 bad_type_str, good_flags_str, bad_flags_str); 116 117 return 0; 118 } 119
