main.c revision 41399
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 44static char sccsid[] = "@(#)main.c 8.4 (Berkeley) 5/4/95"; 45#endif /* not lint */ 46 47#include <sys/types.h> 48#include <sys/stat.h> 49 50#include <err.h> 51#include <errno.h> 52#include <fcntl.h> 53#include <fts.h> 54#include <locale.h> 55#include <stdio.h> 56#include <stdlib.h> 57#include <time.h> 58#include <unistd.h> 59 60#include "find.h" 61 62time_t now; /* time find was run */ 63int dotfd; /* starting directory */ 64int ftsoptions; /* options for the ftsopen(3) call */ 65int isdeprecated; /* using deprecated syntax */ 66int isdepth; /* do directories on post-order visit */ 67int isoutput; /* user specified output operator */ 68int issort; /* do hierarchies in lexicographical order */ 69int isxargs; /* don't permit xargs delimiting chars */ 70 71static void usage __P((void)); 72 73int 74main(argc, argv) 75 int argc; 76 char *argv[]; 77{ 78 register char **p, **start; 79 int Hflag, Lflag, ch; 80 81 (void)setlocale(LC_ALL, ""); 82 83 (void)time(&now); /* initialize the time-of-day */ 84 85 p = start = argv; 86 Hflag = Lflag = 0; 87 ftsoptions = FTS_NOSTAT | FTS_PHYSICAL; 88 while ((ch = getopt(argc, argv, "HLPXdf:sx")) != -1) 89 switch (ch) { 90 case 'H': 91 Hflag = 1; 92 Lflag = 0; 93 break; 94 case 'L': 95 Lflag = 1; 96 Hflag = 0; 97 break; 98 case 'P': 99 Hflag = Lflag = 0; 100 break; 101 case 'X': 102 isxargs = 1; 103 break; 104 case 'd': 105 isdepth = 1; 106 break; 107 case 'f': 108 *p++ = optarg; 109 break; 110 case 's': 111 issort = 1; 112 break; 113 case 'x': 114 ftsoptions |= FTS_XDEV; 115 break; 116 case '?': 117 default: 118 break; 119 } 120 121 argc -= optind; 122 argv += optind; 123 124 if (Hflag) 125 ftsoptions |= FTS_COMFOLLOW; 126 if (Lflag) { 127 ftsoptions &= ~FTS_PHYSICAL; 128 ftsoptions |= FTS_LOGICAL; 129 } 130 131 /* 132 * Find first option to delimit the file list. The first argument 133 * that starts with a -, or is a ! or a ( must be interpreted as a 134 * part of the find expression, according to POSIX .2. 135 */ 136 for (; *argv != NULL; *p++ = *argv++) { 137 if (argv[0][0] == '-') 138 break; 139 if ((argv[0][0] == '!' || argv[0][0] == '(') && 140 argv[0][1] == '\0') 141 break; 142 } 143 144 if (p == start) 145 usage(); 146 *p = NULL; 147 148 if ((dotfd = open(".", O_RDONLY, 0)) < 0) 149 err(1, "."); 150 151 exit(find_execute(find_formplan(argv), start)); 152} 153 154static void 155usage() 156{ 157 (void)fprintf(stderr, 158"usage: find [-H | -L | -P] [-Xdsx] [-f file] [file ...] [expression]\n"); 159 exit(1); 160} 161