1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 1993,1995 Paul Kranenburg 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Paul Kranenburg. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/param.h> 34 #include <sys/types.h> 35 #include <sys/stat.h> 36 #include <sys/mman.h> 37 #include <a.out.h> 38 #include <ctype.h> 39 #include <dirent.h> 40 #include <elf-hints.h> 41 #include <err.h> 42 #include <errno.h> 43 #include <fcntl.h> 44 #include <stdbool.h> 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <string.h> 48 #include <unistd.h> 49 50 #include "ldconfig.h" 51 52 #define _PATH_LD32_HINTS "/var/run/ld32.so.hints" 53 #define _PATH_ELF32_HINTS "/var/run/ld-elf32.so.hints" 54 #define _PATH_ELFSOFT_HINTS "/var/run/ld-elf-soft.so.hints" 55 56 static void usage(void); 57 58 int 59 main(int argc, char **argv) 60 { 61 const char *hints_file; 62 int c; 63 bool is_32, is_soft, justread, merge, rescan, verbose; 64 65 is_32 = is_soft = justread = merge = rescan = verbose = false; 66 67 while (argc > 1) { 68 if (strcmp(argv[1], "-aout") == 0) { 69 errx(1, "aout is not supported"); 70 } else if (strcmp(argv[1], "-elf") == 0) { 71 argc--; 72 argv++; 73 } else if (strcmp(argv[1], "-32") == 0) { 74 is_32 = true; 75 argc--; 76 argv++; 77 } else if (strcmp(argv[1], "-soft") == 0) { 78 is_soft = true; 79 argc--; 80 argv++; 81 } else { 82 break; 83 } 84 } 85 86 if (is_soft) 87 hints_file = _PATH_ELFSOFT_HINTS; 88 else if (is_32) 89 hints_file = _PATH_ELF32_HINTS; 90 else 91 hints_file = _PATH_ELF_HINTS; 92 if (argc == 1) 93 rescan = true; 94 else while((c = getopt(argc, argv, "Rf:imrsv")) != -1) { 95 switch (c) { 96 case 'R': 97 rescan = true; 98 break; 99 case 'f': 100 hints_file = optarg; 101 break; 102 case 'i': 103 insecure = true; 104 break; 105 case 'm': 106 merge = true; 107 break; 108 case 'r': 109 justread = true; 110 break; 111 case 's': 112 /* was nostd */ 113 break; 114 case 'v': 115 verbose = true; 116 break; 117 default: 118 usage(); 119 break; 120 } 121 } 122 123 if (justread) 124 list_elf_hints(hints_file); 125 else 126 update_elf_hints(hints_file, argc - optind, 127 argv + optind, merge || rescan); 128 exit(0); 129 } 130 131 static void 132 usage(void) 133 { 134 fprintf(stderr, 135 "usage: ldconfig [-32] [-elf] [-Rimrv] [-f hints_file] " 136 "[directory | file ...]\n"); 137 exit(1); 138 } 139