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 #include "rtld_paths.h" 52 53 static void usage(void); 54 55 int 56 main(int argc, char **argv) 57 { 58 const char *hints_file; 59 int c; 60 bool is_32, justread, merge, rescan, verbose; 61 62 is_32 = justread = merge = rescan = verbose = false; 63 64 while (argc > 1) { 65 if (strcmp(argv[1], "-aout") == 0) { 66 errx(1, "aout is not supported"); 67 } else if (strcmp(argv[1], "-elf") == 0) { 68 argc--; 69 argv++; 70 } else if (strcmp(argv[1], "-32") == 0) { 71 is_32 = true; 72 argc--; 73 argv++; 74 } else { 75 break; 76 } 77 } 78 79 if (is_32) 80 hints_file = _PATH_ELF32_HINTS; 81 else 82 hints_file = _PATH_ELF_HINTS; 83 while((c = getopt(argc, argv, "Rf:imrsv")) != -1) { 84 switch (c) { 85 case 'R': 86 rescan = true; 87 break; 88 case 'f': 89 hints_file = optarg; 90 break; 91 case 'i': 92 insecure = true; 93 break; 94 case 'm': 95 merge = true; 96 break; 97 case 'r': 98 justread = true; 99 break; 100 case 's': 101 /* was nostd */ 102 break; 103 case 'v': 104 verbose = true; 105 break; 106 default: 107 usage(); 108 break; 109 } 110 } 111 112 if (justread) { 113 list_elf_hints(hints_file); 114 } else { 115 if (argc == optind) 116 rescan = true; 117 update_elf_hints(hints_file, argc - optind, 118 argv + optind, merge || rescan); 119 } 120 exit(0); 121 } 122 123 static void 124 usage(void) 125 { 126 fprintf(stderr, 127 "usage: ldconfig [-32] [-elf] [-Rimrv] [-f hints_file] " 128 "[directory | file ...]\n"); 129 exit(1); 130 } 131