main.c revision 200462
1/*- 2 * Copyright (c) 1990, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Cimarron D. Taylor of the University of California, Berkeley. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37#ifndef lint 38char copyright[] = 39"@(#) Copyright (c) 1990, 1993, 1994\n\ 40 The Regents of the University of California. All rights reserved.\n"; 41#endif /* not lint */ 42 43#ifndef lint 44#if 0 45static char sccsid[] = "@(#)main.c 8.4 (Berkeley) 5/4/95"; 46#endif 47#endif /* not lint */ 48 49#include <sys/cdefs.h> 50__FBSDID("$FreeBSD: head/usr.bin/find/main.c 200462 2009-12-13 03:14:06Z delphij $"); 51 52#include <sys/types.h> 53#include <sys/stat.h> 54 55#include <err.h> 56#include <errno.h> 57#include <fcntl.h> 58#include <fts.h> 59#include <locale.h> 60#include <regex.h> 61#include <stdio.h> 62#include <stdlib.h> 63#include <time.h> 64#include <unistd.h> 65 66#include "find.h" 67 68time_t now; /* time find was run */ 69int dotfd; /* starting directory */ 70int ftsoptions; /* options for the ftsopen(3) call */ 71int isdeprecated; /* using deprecated syntax */ 72int isdepth; /* do directories on post-order visit */ 73int isoutput; /* user specified output operator */ 74int issort; /* do hierarchies in lexicographical order */ 75int isxargs; /* don't permit xargs delimiting chars */ 76int mindepth = -1, maxdepth = -1; /* minimum and maximum depth */ 77int regexp_flags = REG_BASIC; /* use the "basic" regexp by default*/ 78 79static void usage(void); 80 81int 82main(int argc, char *argv[]) 83{ 84 char **p, **start; 85 int Hflag, Lflag, ch; 86 87 (void)setlocale(LC_ALL, ""); 88 89 (void)time(&now); /* initialize the time-of-day */ 90 91 p = start = argv; 92 Hflag = Lflag = 0; 93 ftsoptions = FTS_NOSTAT | FTS_PHYSICAL; 94 while ((ch = getopt(argc, argv, "EHLPXdf:sx")) != -1) 95 switch (ch) { 96 case 'E': 97 regexp_flags |= REG_EXTENDED; 98 break; 99 case 'H': 100 Hflag = 1; 101 Lflag = 0; 102 break; 103 case 'L': 104 Lflag = 1; 105 Hflag = 0; 106 break; 107 case 'P': 108 Hflag = Lflag = 0; 109 break; 110 case 'X': 111 isxargs = 1; 112 break; 113 case 'd': 114 isdepth = 1; 115 break; 116 case 'f': 117 *p++ = optarg; 118 break; 119 case 's': 120 issort = 1; 121 break; 122 case 'x': 123 ftsoptions |= FTS_XDEV; 124 break; 125 case '?': 126 default: 127 break; 128 } 129 130 argc -= optind; 131 argv += optind; 132 133 if (Hflag) 134 ftsoptions |= FTS_COMFOLLOW; 135 if (Lflag) { 136 ftsoptions &= ~FTS_PHYSICAL; 137 ftsoptions |= FTS_LOGICAL; 138 } 139 140 /* 141 * Find first option to delimit the file list. The first argument 142 * that starts with a -, or is a ! or a ( must be interpreted as a 143 * part of the find expression, according to POSIX .2. 144 */ 145 for (; *argv != NULL; *p++ = *argv++) { 146 if (argv[0][0] == '-') 147 break; 148 if ((argv[0][0] == '!' || argv[0][0] == '(') && 149 argv[0][1] == '\0') 150 break; 151 } 152 153 if (p == start) 154 usage(); 155 *p = NULL; 156 157 if ((dotfd = open(".", O_RDONLY, 0)) < 0) 158 err(1, "."); 159 160 exit(find_execute(find_formplan(argv), start)); 161} 162 163static void 164usage(void) 165{ 166 (void)fprintf(stderr, "%s\n%s\n", 167"usage: find [-H | -L | -P] [-EXdsx] [-f path] path ... [expression]", 168" find [-H | -L | -P] [-EXdsx] -f path [path ...] [expression]"); 169 exit(1); 170} 171