main.c revision 93604 
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#include <sys/cdefs.h>
49__FBSDID("$FreeBSD: head/usr.bin/find/main.c 93604 2002-04-01 22:56:56Z obrien $");
50
51#include <sys/types.h>
52#include <sys/stat.h>
53
54#include <err.h>
55#include <errno.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(argc, argv)
82	int argc;
83	char *argv[];
84{
85	char **p, **start;
86	int Hflag, Lflag, ch;
87
88	(void)setlocale(LC_ALL, "");
89
90	(void)time(&now);	/* initialize the time-of-day */
91
92	p = start = argv;
93	Hflag = Lflag = 0;
94	ftsoptions = FTS_NOSTAT | FTS_PHYSICAL;
95	while ((ch = getopt(argc, argv, "EHLPXdf:sx")) != -1)
96		switch (ch) {
97		case 'E':
98			regexp_flags |= REG_EXTENDED;
99			break;
100		case 'H':
101			Hflag = 1;
102			Lflag = 0;
103			break;
104		case 'L':
105			Lflag = 1;
106			Hflag = 0;
107			break;
108		case 'P':
109			Hflag = Lflag = 0;
110			break;
111		case 'X':
112			isxargs = 1;
113			break;
114		case 'd':
115			isdepth = 1;
116			break;
117		case 'f':
118			*p++ = optarg;
119			break;
120		case 's':
121			issort = 1;
122			break;
123		case 'x':
124			ftsoptions |= FTS_XDEV;
125			break;
126		case '?':
127		default:
128			break;
129		}
130
131	argc -= optind;
132	argv += optind;
133
134	if (Hflag)
135		ftsoptions |= FTS_COMFOLLOW;
136	if (Lflag) {
137		ftsoptions &= ~FTS_PHYSICAL;
138		ftsoptions |= FTS_LOGICAL;
139	}
140
141	/*
142	 * Find first option to delimit the file list.  The first argument
143	 * that starts with a -, or is a ! or a ( must be interpreted as a
144	 * part of the find expression, according to POSIX .2.
145	 */
146	for (; *argv != NULL; *p++ = *argv++) {
147		if (argv[0][0] == '-')
148			break;
149		if ((argv[0][0] == '!' || argv[0][0] == '(') &&
150		    argv[0][1] == '\0')
151			break;
152	}
153
154	if (p == start)
155		usage();
156	*p = NULL;
157
158	if ((dotfd = open(".", O_RDONLY, 0)) < 0)
159		err(1, ".");
160
161	exit(find_execute(find_formplan(argv), start));
162}
163
164static void
165usage()
166{
167	(void)fprintf(stderr,
168"usage: find [-H | -L | -P] [-EXdsx] [-f file] [file ...] [expression]\n");
169	exit(1);
170}
171