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