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 #define _PATH_LD32_HINTS "/var/run/ld32.so.hints" 54 #define _PATH_ELF32_HINTS "/var/run/ld-elf32.so.hints" 55 #define _PATH_ELFSOFT_HINTS "/var/run/ld-elf-soft.so.hints" 56 57 static void usage(void); 58 59 int 60 main(int argc, char **argv) 61 { 62 const char *hints_file; 63 int c; 64 bool is_32, is_soft, justread, merge, rescan, verbose; 65 66 is_32 = is_soft = justread = merge = rescan = verbose = false; 67 68 while (argc > 1) { 69 if (strcmp(argv[1], "-aout") == 0) { 70 errx(1, "aout is not supported"); 71 } else if (strcmp(argv[1], "-elf") == 0) { 72 argc--; 73 argv++; 74 } else if (strcmp(argv[1], "-32") == 0) { 75 is_32 = true; 76 argc--; 77 argv++; 78 } else if (strcmp(argv[1], "-soft") == 0) { 79 is_soft = true; 80 argc--; 81 argv++; 82 } else { 83 break; 84 } 85 } 86 87 if (is_soft) 88 hints_file = _PATH_SOFT_ELF_HINTS; 89 else if (is_32) 90 hints_file = _PATH_ELF32_HINTS; 91 else 92 hints_file = _PATH_ELF_HINTS; 93 while((c = getopt(argc, argv, "Rf:imrsv")) != -1) { 94 switch (c) { 95 case 'R': 96 rescan = true; 97 break; 98 case 'f': 99 hints_file = optarg; 100 break; 101 case 'i': 102 insecure = true; 103 break; 104 case 'm': 105 merge = true; 106 break; 107 case 'r': 108 justread = true; 109 break; 110 case 's': 111 /* was nostd */ 112 break; 113 case 'v': 114 verbose = true; 115 break; 116 default: 117 usage(); 118 break; 119 } 120 } 121 122 if (justread) { 123 list_elf_hints(hints_file); 124 } else { 125 if (argc == optind) 126 rescan = true; 127 update_elf_hints(hints_file, argc - optind, 128 argv + optind, merge || rescan); 129 } 130 exit(0); 131 } 132 133 static void 134 usage(void) 135 { 136 fprintf(stderr, 137 "usage: ldconfig [-32] [-elf] [-Rimrv] [-f hints_file] " 138 "[directory | file ...]\n"); 139 exit(1); 140 } 141