1 /* $OpenBSD: main.c,v 1.32 2021/10/24 21:24:16 deraadt Exp $ */ 2 3 /*- 4 * Copyright (c) 1990, 1993 5 * The Regents of the University of California. 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/types.h> 33 #include <sys/stat.h> 34 35 #include <err.h> 36 #include <errno.h> 37 #include <fcntl.h> 38 #include <fts.h> 39 #include <signal.h> 40 #include <stdio.h> 41 #include <stdlib.h> 42 #include <string.h> 43 #include <time.h> 44 #include <unistd.h> 45 46 #include "find.h" 47 48 time_t now; /* time find was run */ 49 int dotfd; /* starting directory; may be -1 */ 50 int ftsoptions; /* options for the fts_open(3) call */ 51 int isdelete; /* user specified -delete operator */ 52 int isdepth; /* do directories on post-order visit */ 53 int isoutput; /* user specified output operator */ 54 int isxargs; /* don't permit xargs delimiting chars */ 55 56 __dead static void usage(void); 57 58 int 59 main(int argc, char *argv[]) 60 { 61 struct sigaction sa; 62 char **p, **paths, **paths2; 63 int ch; 64 65 memset(&sa, 0, sizeof sa); 66 sa.sa_handler = show_path; 67 sa.sa_flags = SA_RESTART; 68 69 (void)time(&now); /* initialize the time-of-day */ 70 71 p = paths = ereallocarray(NULL, argc, sizeof(char *)); 72 73 sigaction(SIGINFO, &sa, NULL); 74 75 ftsoptions = FTS_NOSTAT|FTS_PHYSICAL; 76 while ((ch = getopt(argc, argv, "Hdf:hLXx")) != -1) 77 switch(ch) { 78 case 'H': 79 ftsoptions |= FTS_COMFOLLOW; 80 ftsoptions |= FTS_PHYSICAL; 81 ftsoptions &= ~FTS_LOGICAL; 82 break; 83 case 'd': 84 isdepth = 1; 85 break; 86 case 'f': 87 *p++ = optarg; 88 break; 89 case 'h': 90 case 'L': 91 ftsoptions &= ~FTS_COMFOLLOW; 92 ftsoptions &= ~FTS_PHYSICAL; 93 ftsoptions |= FTS_LOGICAL; 94 break; 95 case 'X': 96 isxargs = 1; 97 break; 98 case 'x': 99 ftsoptions &= ~FTS_NOSTAT; 100 ftsoptions |= FTS_XDEV; 101 break; 102 case '?': 103 default: 104 usage(); 105 } 106 107 argc -= optind; 108 argv += optind; 109 110 /* The first argument that starts with a -, or is a ! or a (, and all 111 * subsequent arguments shall be interpreted as an expression ... 112 * (POSIX.2). 113 */ 114 while (*argv) { 115 if (**argv == '-' || 116 ((**argv == '!' || **argv == '(') && (*argv)[1] == '\0')) 117 break; 118 *p++ = *argv++; 119 } 120 121 if (p == paths) 122 usage(); 123 *p = NULL; 124 125 if (!(paths2 = reallocarray(paths, p - paths + 1, sizeof(char *)))) 126 err(1, NULL); 127 paths = paths2; 128 129 dotfd = open(".", O_RDONLY); 130 131 exit(find_execute(find_formplan(argv), paths)); 132 } 133 134 static void 135 usage(void) 136 { 137 (void)fprintf(stderr, 138 "usage: find [-dHhLXx] [-f path] path ... [expression]\n"); 139 exit(1); 140 } 141