main.c revision 200420
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 200420 2009-12-11 23:35:38Z delphij $"); 51 52#include <sys/types.h> 53#include <sys/stat.h> 54 55#include <err.h> 56#include <fcntl.h> 57#include <fts.h> 58#include <locale.h> 59#include <regex.h> 60#include <stdio.h> 61#include <stdlib.h> 62#include <time.h> 63#include <unistd.h> 64 65#include "find.h" 66 67time_t now; /* time find was run */ 68int dotfd; /* starting directory */ 69int ftsoptions; /* options for the ftsopen(3) call */ 70int isdeprecated; /* using deprecated syntax */ 71int isdepth; /* do directories on post-order visit */ 72int isoutput; /* user specified output operator */ 73int issort; /* do hierarchies in lexicographical order */ 74int isxargs; /* don't permit xargs delimiting chars */ 75int mindepth = -1, maxdepth = -1; /* minimum and maximum depth */ 76int regexp_flags = REG_BASIC; /* use the "basic" regexp by default*/ 77 78static void usage(void); 79 80int 81main(int argc, char *argv[]) 82{ 83 char **p, **start; 84 int Hflag, Lflag, ch; 85 86 (void)setlocale(LC_ALL, ""); 87 88 (void)time(&now); /* initialize the time-of-day */ 89 90 p = start = argv; 91 Hflag = Lflag = 0; 92 ftsoptions = FTS_NOSTAT | FTS_PHYSICAL; 93 while ((ch = getopt(argc, argv, "EHLPXdf:sx")) != -1) 94 switch (ch) { 95 case 'E': 96 regexp_flags |= REG_EXTENDED; 97 break; 98 case 'H': 99 Hflag = 1; 100 Lflag = 0; 101 break; 102 case 'L': 103 Lflag = 1; 104 Hflag = 0; 105 break; 106 case 'P': 107 Hflag = Lflag = 0; 108 break; 109 case 'X': 110 isxargs = 1; 111 break; 112 case 'd': 113 isdepth = 1; 114 break; 115 case 'f': 116 *p++ = optarg; 117 break; 118 case 's': 119 issort = 1; 120 break; 121 case 'x': 122 ftsoptions |= FTS_XDEV; 123 break; 124 case '?': 125 default: 126 break; 127 } 128 129 argc -= optind; 130 argv += optind; 131 132 if (Hflag) 133 ftsoptions |= FTS_COMFOLLOW; 134 if (Lflag) { 135 ftsoptions &= ~FTS_PHYSICAL; 136 ftsoptions |= FTS_LOGICAL; 137 } 138 139 /* 140 * Find first option to delimit the file list. The first argument 141 * that starts with a -, or is a ! or a ( must be interpreted as a 142 * part of the find expression, according to POSIX .2. 143 */ 144 for (; *argv != NULL; *p++ = *argv++) { 145 if (argv[0][0] == '-') 146 break; 147 if ((argv[0][0] == '!' || argv[0][0] == '(') && 148 argv[0][1] == '\0') 149 break; 150 } 151 152 if (p == start) 153 usage(); 154 *p = NULL; 155 156 if ((dotfd = open(".", O_RDONLY, 0)) < 0) 157 err(1, "."); 158 159 exit(find_execute(find_formplan(argv), start)); 160} 161 162static void 163usage(void) 164{ 165 (void)fprintf(stderr, "%s\n%s\n", 166"usage: find [-H | -L | -P] [-EXdsx] [-f path] path ... [expression]", 167" find [-H | -L | -P] [-EXdsx] -f path [path ...] [expression]"); 168 exit(1); 169} 170