xref: /freebsd/usr.bin/find/main.c (revision 6990ffd8a95caaba6858ad44ff1b3157d1efba8f)
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
38 char 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
45 static char sccsid[] = "@(#)main.c	8.4 (Berkeley) 5/4/95";
46 #else
47 static const char rcsid[] =
48   "$FreeBSD$";
49 #endif
50 #endif /* not lint */
51 
52 #include <sys/types.h>
53 #include <sys/stat.h>
54 
55 #include <err.h>
56 #include <errno.h>
57 #include <fcntl.h>
58 #include <fts.h>
59 #include <locale.h>
60 #include <regex.h>
61 #include <stdio.h>
62 #include <stdlib.h>
63 #include <time.h>
64 #include <unistd.h>
65 
66 #include "find.h"
67 
68 time_t now;			/* time find was run */
69 int dotfd;			/* starting directory */
70 int ftsoptions;			/* options for the ftsopen(3) call */
71 int isdeprecated;		/* using deprecated syntax */
72 int isdepth;			/* do directories on post-order visit */
73 int isoutput;			/* user specified output operator */
74 int issort;         		/* do hierarchies in lexicographical order */
75 int isxargs;			/* don't permit xargs delimiting chars */
76 int mindepth = -1, maxdepth = -1; /* minimum and maximum depth */
77 int regexp_flags = REG_BASIC;	/* use the "basic" regexp by default*/
78 
79 static void usage __P((void));
80 
81 int
82 main(argc, argv)
83 	int argc;
84 	char *argv[];
85 {
86 	register char **p, **start;
87 	int Hflag, Lflag, ch;
88 
89 	(void)setlocale(LC_ALL, "");
90 
91 	(void)time(&now);	/* initialize the time-of-day */
92 
93 	p = start = argv;
94 	Hflag = Lflag = 0;
95 	ftsoptions = FTS_NOSTAT | FTS_PHYSICAL;
96 	while ((ch = getopt(argc, argv, "EHLPXdf:sx")) != -1)
97 		switch (ch) {
98 		case 'E':
99 			regexp_flags |= REG_EXTENDED;
100 			break;
101 		case 'H':
102 			Hflag = 1;
103 			Lflag = 0;
104 			break;
105 		case 'L':
106 			Lflag = 1;
107 			Hflag = 0;
108 			break;
109 		case 'P':
110 			Hflag = Lflag = 0;
111 			break;
112 		case 'X':
113 			isxargs = 1;
114 			break;
115 		case 'd':
116 			isdepth = 1;
117 			break;
118 		case 'f':
119 			*p++ = optarg;
120 			break;
121 		case 's':
122 			issort = 1;
123 			break;
124 		case 'x':
125 			ftsoptions |= FTS_XDEV;
126 			break;
127 		case '?':
128 		default:
129 			break;
130 		}
131 
132 	argc -= optind;
133 	argv += optind;
134 
135 	if (Hflag)
136 		ftsoptions |= FTS_COMFOLLOW;
137 	if (Lflag) {
138 		ftsoptions &= ~FTS_PHYSICAL;
139 		ftsoptions |= FTS_LOGICAL;
140 	}
141 
142 	/*
143 	 * Find first option to delimit the file list.  The first argument
144 	 * that starts with a -, or is a ! or a ( must be interpreted as a
145 	 * part of the find expression, according to POSIX .2.
146 	 */
147 	for (; *argv != NULL; *p++ = *argv++) {
148 		if (argv[0][0] == '-')
149 			break;
150 		if ((argv[0][0] == '!' || argv[0][0] == '(') &&
151 		    argv[0][1] == '\0')
152 			break;
153 	}
154 
155 	if (p == start)
156 		usage();
157 	*p = NULL;
158 
159 	if ((dotfd = open(".", O_RDONLY, 0)) < 0)
160 		err(1, ".");
161 
162 	exit(find_execute(find_formplan(argv), start));
163 }
164 
165 static void
166 usage()
167 {
168 	(void)fprintf(stderr,
169 "usage: find [-H | -L | -P] [-EXdsx] [-f file] [file ...] [expression]\n");
170 	exit(1);
171 }
172