main.c revision 1591 
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	8.3 (Berkeley) 4/16/94";
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 <stdio.h>
55#include <stdlib.h>
56#include <time.h>
57
58#include "find.h"
59
60time_t now;			/* time find was run */
61int dotfd;			/* starting directory */
62int ftsoptions;			/* options for the ftsopen(3) call */
63int isdeprecated;		/* using deprecated syntax */
64int isdepth;			/* do directories on post-order visit */
65int isoutput;			/* user specified output operator */
66int isxargs;			/* don't permit xargs delimiting chars */
67
68static void usage __P((void));
69
70int
71main(argc, argv)
72	int argc;
73	char *argv[];
74{
75	register char **p, **start;
76	int Hflag, Lflag, Pflag, ch;
77
78	(void)time(&now);	/* initialize the time-of-day */
79
80	p = start = argv;
81	Hflag = Lflag = Pflag = 0;
82	ftsoptions = FTS_NOSTAT | FTS_PHYSICAL;
83	while ((ch = getopt(argc, argv, "HLPXdf:x")) != EOF)
84		switch (ch) {
85		case 'H':
86			Hflag = 1;
87			Lflag = Pflag = 0;
88			break;
89		case 'L':
90			Lflag = 1;
91			Hflag = Pflag = 0;
92			break;
93		case 'P':
94			Pflag = 1;
95			Hflag = Lflag = 0;
96			break;
97		case 'X':
98			isxargs = 1;
99			break;
100		case 'd':
101			isdepth = 1;
102			break;
103		case 'f':
104			*p++ = optarg;
105			break;
106		case 'x':
107			ftsoptions |= FTS_XDEV;
108			break;
109		case '?':
110		default:
111			break;
112		}
113
114	argc -= optind;
115	argv += optind;
116
117	if (Hflag)
118		ftsoptions |= FTS_COMFOLLOW;
119	if (Lflag) {
120		ftsoptions &= ~FTS_PHYSICAL;
121		ftsoptions |= FTS_LOGICAL;
122	}
123
124	/*
125	 * Find first option to delimit the file list.  The first argument
126	 * that starts with a -, or is a ! or a ( must be interpreted as a
127	 * part of the find expression, according to POSIX .2.
128	 */
129	for (; *argv != NULL; *p++ = *argv++) {
130		if (argv[0][0] == '-')
131			break;
132		if ((argv[0][0] == '!' || argv[0][0] == '(') &&
133		    argv[0][1] == '\0')
134			break;
135	}
136
137	if (p == start)
138		usage();
139	*p = NULL;
140
141	if ((dotfd = open(".", O_RDONLY, 0)) < 0)
142		err(1, ".");
143
144	exit(find_execute(find_formplan(argv), start));
145}
146
147static void
148usage()
149{
150	(void)fprintf(stderr,
151"usage: find [-H | -L | -P] [-Xdx] [-f file] [file ...] [expression]\n");
152	exit(1);
153}
154