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
35 #include <sys/types.h>
36 #include <sys/stat.h>
37
38 #include <err.h>
39 #include <errno.h>
40 #include <fcntl.h>
41 #include <fts.h>
42 #include <locale.h>
43 #include <regex.h>
44 #include <stdio.h>
45 #include <stdlib.h>
46 #include <time.h>
47 #include <unistd.h>
48
49 #include "find.h"
50
51 time_t now; /* time find was run */
52 int dotfd; /* starting directory */
53 int ftsoptions; /* options for the ftsopen(3) call */
54 int ignore_readdir_race; /* ignore readdir race */
55 int isdepth; /* do directories on post-order visit */
56 int isoutput; /* user specified output operator */
57 int issort; /* do hierarchies in lexicographical order */
58 int isxargs; /* don't permit xargs delimiting chars */
59 int mindepth = -1, maxdepth = -1; /* minimum and maximum depth */
60 int regexp_flags = REG_BASIC; /* use the "basic" regexp by default*/
61 int exitstatus;
62 volatile sig_atomic_t showinfo = 0;
63
64 static void usage(void) __dead2;
65 static void siginfo_handler(int sig __unused);
66
67 int
main(int argc,char * argv[])68 main(int argc, char *argv[])
69 {
70 char **p, **start;
71 int Hflag, Lflag, ch;
72
73 (void)setlocale(LC_ALL, "");
74
75 (void)time(&now); /* initialize the time-of-day */
76
77 (void)signal(SIGINFO, siginfo_handler);
78
79 p = start = argv;
80 Hflag = Lflag = 0;
81 ftsoptions = FTS_NOSTAT | FTS_PHYSICAL;
82 while ((ch = getopt(argc, argv, "EHLPXdf:sx")) != -1)
83 switch (ch) {
84 case 'E':
85 regexp_flags |= REG_EXTENDED;
86 break;
87 case 'H':
88 Hflag = 1;
89 Lflag = 0;
90 break;
91 case 'L':
92 Lflag = 1;
93 Hflag = 0;
94 break;
95 case 'P':
96 Hflag = Lflag = 0;
97 break;
98 case 'X':
99 isxargs = 1;
100 break;
101 case 'd':
102 isdepth = 1;
103 break;
104 case 'f':
105 *p++ = optarg;
106 break;
107 case 's':
108 issort = 1;
109 break;
110 case 'x':
111 ftsoptions |= FTS_XDEV;
112 break;
113 case '?':
114 default:
115 usage();
116 }
117
118 argc -= optind;
119 argv += optind;
120
121 if (Hflag)
122 ftsoptions |= FTS_COMFOLLOW;
123 if (Lflag) {
124 ftsoptions &= ~FTS_PHYSICAL;
125 ftsoptions |= FTS_LOGICAL;
126 }
127
128 /*
129 * Find first option to delimit the file list. The first argument
130 * that starts with a -, or is a ! or a ( must be interpreted as a
131 * part of the find expression, according to POSIX .2.
132 */
133 for (; *argv != NULL; *p++ = *argv++) {
134 if (argv[0][0] == '-')
135 break;
136 if ((argv[0][0] == '!' || argv[0][0] == '(') &&
137 argv[0][1] == '\0')
138 break;
139 }
140
141 if (p == start)
142 usage();
143 *p = NULL;
144
145 if ((dotfd = open(".", O_RDONLY | O_CLOEXEC, 0)) < 0)
146 ftsoptions |= FTS_NOCHDIR;
147
148 exit(find_execute(find_formplan(argv), start));
149 }
150
151 static void
usage(void)152 usage(void)
153 {
154 (void)fprintf(stderr, "%s\n%s\n",
155 "usage: find [-H | -L | -P] [-EXdsx] [-f path] path ... [expression]",
156 " find [-H | -L | -P] [-EXdsx] -f path [path ...] [expression]");
157 exit(1);
158 }
159
160 static void
siginfo_handler(int sig __unused)161 siginfo_handler(int sig __unused)
162 {
163 showinfo = 1;
164 }
165