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 * 4. Neither the name of the University nor the names of its contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#ifndef lint
34static const char copyright[] =
35"@(#) Copyright (c) 1990, 1993, 1994\n\
36	The Regents of the University of California.  All rights reserved.\n";
37#endif /* not lint */
38
39#ifndef lint
40#if 0
41static char sccsid[] = "@(#)main.c	8.4 (Berkeley) 5/4/95";
42#endif
43#endif /* not lint */
44
45#include <sys/cdefs.h>
46__FBSDID("$FreeBSD: src/usr.bin/find/main.c,v 1.23 2011/12/10 18:11:06 ed Exp $");
47
48#include <sys/types.h>
49#include <sys/stat.h>
50
51#include <err.h>
52#include <errno.h>
53#include <fcntl.h>
54#include <fts.h>
55#include <locale.h>
56#include <regex.h>
57#include <stdio.h>
58#include <stdlib.h>
59#include <time.h>
60#include <unistd.h>
61
62#include "find.h"
63
64time_t now;			/* time find was run */
65int dotfd;			/* starting directory */
66int ftsoptions;			/* options for the ftsopen(3) call */
67int isdeprecated;		/* using deprecated syntax */
68int isdepth;			/* do directories on post-order visit */
69int isoutput;			/* user specified output operator */
70int issort;         		/* do hierarchies in lexicographical order */
71int isxargs;			/* don't permit xargs delimiting chars */
72int mindepth = -1, maxdepth = -1; /* minimum and maximum depth */
73int regexp_flags = REG_BASIC;	/* use the "basic" regexp by default*/
74
75static void usage(void);
76
77int
78main(int argc, char *argv[])
79{
80	char **p, **start;
81	int Hflag, Lflag, ch;
82
83	(void)setlocale(LC_ALL, "");
84
85	(void)time(&now);	/* initialize the time-of-day */
86
87	p = start = argv;
88	Hflag = Lflag = 0;
89	ftsoptions = FTS_NOSTAT | FTS_PHYSICAL;
90	while ((ch = getopt(argc, argv, "EHLPXdf:sx")) != -1)
91		switch (ch) {
92		case 'E':
93			regexp_flags |= REG_EXTENDED;
94			break;
95		case 'H':
96			Hflag = 1;
97			Lflag = 0;
98			break;
99		case 'L':
100			Lflag = 1;
101			Hflag = 0;
102			break;
103		case 'P':
104			Hflag = Lflag = 0;
105			break;
106		case 'X':
107			isxargs = 1;
108			break;
109		case 'd':
110			isdepth = 1;
111			break;
112		case 'f':
113			*p++ = optarg;
114			break;
115		case 's':
116			issort = 1;
117			break;
118		case 'x':
119			ftsoptions |= FTS_XDEV;
120			break;
121		case '?':
122		default:
123			usage();
124		}
125
126	argc -= optind;
127	argv += optind;
128
129	if (Hflag)
130		ftsoptions |= FTS_COMFOLLOW;
131	if (Lflag) {
132		ftsoptions &= ~FTS_PHYSICAL;
133		ftsoptions |= FTS_LOGICAL;
134	}
135
136	/*
137	 * Find first option to delimit the file list.  The first argument
138	 * that starts with a -, or is a ! or a ( must be interpreted as a
139	 * part of the find expression, according to POSIX .2.
140	 */
141	for (; *argv != NULL; *p++ = *argv++) {
142		if (argv[0][0] == '-')
143			break;
144		if ((argv[0][0] == '!' || argv[0][0] == '(') &&
145		    argv[0][1] == '\0')
146			break;
147	}
148
149	if (p == start)
150		usage();
151	*p = NULL;
152
153	if ((dotfd = open(".", O_RDONLY, 0)) < 0)
154		err(1, ".");
155
156	exit(find_execute(find_formplan(argv), start));
157}
158
159static void
160usage(void)
161{
162	(void)fprintf(stderr, "%s\n%s\n",
163"usage: find [-H | -L | -P] [-EXdsx] [-f path] path ... [expression]",
164"       find [-H | -L | -P] [-EXdsx] -f path [path ...] [expression]");
165	exit(1);
166}
167