main.c revision 264387 
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: head/usr.bin/find/main.c 264387 2014-04-12 22:36:26Z jilles $");
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 ignore_readdir_race;	/* ignore readdir race */
68int isdeprecated;		/* using deprecated syntax */
69int isdepth;			/* do directories on post-order visit */
70int isoutput;			/* user specified output operator */
71int issort;         		/* do hierarchies in lexicographical order */
72int isxargs;			/* don't permit xargs delimiting chars */
73int mindepth = -1, maxdepth = -1; /* minimum and maximum depth */
74int regexp_flags = REG_BASIC;	/* use the "basic" regexp by default*/
75int exitstatus;
76
77static void usage(void);
78
79int
80main(int argc, char *argv[])
81{
82	char **p, **start;
83	int Hflag, Lflag, ch;
84
85	(void)setlocale(LC_ALL, "");
86
87	(void)time(&now);	/* initialize the time-of-day */
88
89	p = start = argv;
90	Hflag = Lflag = 0;
91	ftsoptions = FTS_NOSTAT | FTS_PHYSICAL;
92	while ((ch = getopt(argc, argv, "EHLPXdf:sx")) != -1)
93		switch (ch) {
94		case 'E':
95			regexp_flags |= REG_EXTENDED;
96			break;
97		case 'H':
98			Hflag = 1;
99			Lflag = 0;
100			break;
101		case 'L':
102			Lflag = 1;
103			Hflag = 0;
104			break;
105		case 'P':
106			Hflag = Lflag = 0;
107			break;
108		case 'X':
109			isxargs = 1;
110			break;
111		case 'd':
112			isdepth = 1;
113			break;
114		case 'f':
115			*p++ = optarg;
116			break;
117		case 's':
118			issort = 1;
119			break;
120		case 'x':
121			ftsoptions |= FTS_XDEV;
122			break;
123		case '?':
124		default:
125			usage();
126		}
127
128	argc -= optind;
129	argv += optind;
130
131	if (Hflag)
132		ftsoptions |= FTS_COMFOLLOW;
133	if (Lflag) {
134		ftsoptions &= ~FTS_PHYSICAL;
135		ftsoptions |= FTS_LOGICAL;
136	}
137
138	/*
139	 * Find first option to delimit the file list.  The first argument
140	 * that starts with a -, or is a ! or a ( must be interpreted as a
141	 * part of the find expression, according to POSIX .2.
142	 */
143	for (; *argv != NULL; *p++ = *argv++) {
144		if (argv[0][0] == '-')
145			break;
146		if ((argv[0][0] == '!' || argv[0][0] == '(') &&
147		    argv[0][1] == '\0')
148			break;
149	}
150
151	if (p == start)
152		usage();
153	*p = NULL;
154
155	if ((dotfd = open(".", O_RDONLY | O_CLOEXEC, 0)) < 0)
156		ftsoptions |= FTS_NOCHDIR;
157
158	exit(find_execute(find_formplan(argv), start));
159}
160
161static void
162usage(void)
163{
164	(void)fprintf(stderr, "%s\n%s\n",
165"usage: find [-H | -L | -P] [-EXdsx] [-f path] path ... [expression]",
166"       find [-H | -L | -P] [-EXdsx] -f path [path ...] [expression]");
167	exit(1);
168}
169