1 /* $OpenBSD: main.c,v 1.33 2022/12/04 23:50:48 cheloha Exp $ */
2
3 /*-
4 * Copyright (c) 1990, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/types.h>
33 #include <sys/stat.h>
34
35 #include <err.h>
36 #include <errno.h>
37 #include <fcntl.h>
38 #include <fts.h>
39 #include <signal.h>
40 #include <stdio.h>
41 #include <stdlib.h>
42 #include <string.h>
43 #include <time.h>
44 #include <unistd.h>
45
46 #include "find.h"
47
48 time_t now; /* time find was run */
49 int dotfd; /* starting directory; may be -1 */
50 int ftsoptions; /* options for the fts_open(3) call */
51 int isdelete; /* user specified -delete operator */
52 int isdepth; /* do directories on post-order visit */
53 int isoutput; /* user specified output operator */
54 int isxargs; /* don't permit xargs delimiting chars */
55
56 __dead static void usage(void);
57
58 int
main(int argc,char * argv[])59 main(int argc, char *argv[])
60 {
61 struct sigaction sa;
62 char **p, **paths, **paths2;
63 int ch;
64
65 memset(&sa, 0, sizeof sa);
66 sa.sa_handler = show_path;
67 sa.sa_flags = SA_RESTART;
68
69 (void)time(&now); /* initialize the time-of-day */
70
71 p = paths = ereallocarray(NULL, argc, sizeof(char *));
72
73 sigaction(SIGINFO, &sa, NULL);
74
75 ftsoptions = FTS_NOSTAT|FTS_PHYSICAL;
76 while ((ch = getopt(argc, argv, "Hdf:hLXx")) != -1)
77 switch(ch) {
78 case 'H':
79 ftsoptions |= FTS_COMFOLLOW;
80 ftsoptions |= FTS_PHYSICAL;
81 ftsoptions &= ~FTS_LOGICAL;
82 break;
83 case 'd':
84 isdepth = 1;
85 break;
86 case 'f':
87 *p++ = optarg;
88 break;
89 case 'h':
90 case 'L':
91 ftsoptions &= ~FTS_COMFOLLOW;
92 ftsoptions &= ~FTS_PHYSICAL;
93 ftsoptions |= FTS_LOGICAL;
94 break;
95 case 'X':
96 isxargs = 1;
97 break;
98 case 'x':
99 ftsoptions &= ~FTS_NOSTAT;
100 ftsoptions |= FTS_XDEV;
101 break;
102 default:
103 usage();
104 }
105
106 argc -= optind;
107 argv += optind;
108
109 /* The first argument that starts with a -, or is a ! or a (, and all
110 * subsequent arguments shall be interpreted as an expression ...
111 * (POSIX.2).
112 */
113 while (*argv) {
114 if (**argv == '-' ||
115 ((**argv == '!' || **argv == '(') && (*argv)[1] == '\0'))
116 break;
117 *p++ = *argv++;
118 }
119
120 if (p == paths)
121 usage();
122 *p = NULL;
123
124 if (!(paths2 = reallocarray(paths, p - paths + 1, sizeof(char *))))
125 err(1, NULL);
126 paths = paths2;
127
128 dotfd = open(".", O_RDONLY);
129
130 exit(find_execute(find_formplan(argv), paths));
131 }
132
133 static void
usage(void)134 usage(void)
135 {
136 (void)fprintf(stderr,
137 "usage: find [-dHhLXx] [-f path] path ... [expression]\n");
138 exit(1);
139 }
140