Remove not needed void casts.
[dragonfly.git] / bin / mkdir / mkdir.c
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1/*
2 * Copyright (c) 1983, 1992, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
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32 *
33 * @(#) Copyright (c) 1983, 1992, 1993 The Regents of the University of California. All rights reserved.
34 * @(#)mkdir.c 8.2 (Berkeley) 1/25/94
35 * $FreeBSD: src/bin/mkdir/mkdir.c,v 1.19.2.2 2001/08/01 04:42:37 obrien Exp $
57fed2af 36 * $DragonFly: src/bin/mkdir/mkdir.c,v 1.6 2004/11/07 20:54:51 eirikn Exp $
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37 */
38
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39#include <sys/types.h>
40#include <sys/stat.h>
41
42#include <err.h>
43#include <errno.h>
44#include <libgen.h>
45#include <stdio.h>
46#include <stdlib.h>
47#include <string.h>
48#include <sysexits.h>
49#include <unistd.h>
50
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51static int build(char *, mode_t);
52static void usage(void);
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53
54int vflag;
55
56int
b5744197 57main(int argc, char **argv)
984263bc 58{
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59 int ch, exitval, success, pflag;
60 void *set;
61 mode_t omode;
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62 char *mode;
63
64 omode = pflag = 0;
65 mode = NULL;
66 while ((ch = getopt(argc, argv, "m:pv")) != -1)
67 switch(ch) {
68 case 'm':
69 mode = optarg;
70 break;
71 case 'p':
72 pflag = 1;
73 break;
74 case 'v':
75 vflag = 1;
76 break;
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77 default:
78 usage();
79 }
80
81 argc -= optind;
82 argv += optind;
83 if (argv[0] == NULL)
84 usage();
85
86 if (mode == NULL) {
87 omode = S_IRWXU | S_IRWXG | S_IRWXO;
88 } else {
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89 errno = 0;
90 if ((set = setmode(mode)) == NULL) {
91 if (!errno)
92 errx(1, "invalid file mode: %s", mode);
93 else
94 /* A malloc(3) error, not a invaild file mode. */
95 err(1, "setmode failed");
96 }
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97 omode = getmode(set, S_IRWXU | S_IRWXG | S_IRWXO);
98 free(set);
99 }
100
101 for (exitval = 0; *argv != NULL; ++argv) {
102 success = 1;
103 if (pflag) {
104 if (build(*argv, omode))
105 success = 0;
106 } else if (mkdir(*argv, omode) < 0) {
107 if (errno == ENOTDIR || errno == ENOENT)
108 warn("%s", dirname(*argv));
109 else
110 warn("%s", *argv);
111 success = 0;
112 } else if (vflag)
57fed2af 113 printf("%s\n", *argv);
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114
115 if (!success)
116 exitval = 1;
117 /*
118 * The mkdir() and umask() calls both honor only the low
119 * nine bits, so if you try to set a mode including the
120 * sticky, setuid, setgid bits you lose them. Don't do
121 * this unless the user has specifically requested a mode,
122 * as chmod will (obviously) ignore the umask.
123 */
124 if (success && mode != NULL && chmod(*argv, omode) == -1) {
125 warn("%s", *argv);
126 exitval = 1;
127 }
128 }
129 exit(exitval);
130}
131
988ed32d 132static int
b5744197 133build(char *path, mode_t omode)
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134{
135 struct stat sb;
136 mode_t numask, oumask;
137 int first, last, retval;
138 char *p;
139
140 p = path;
141 oumask = 0;
142 retval = 0;
143 if (p[0] == '/') /* Skip leading '/'. */
144 ++p;
145 for (first = 1, last = 0; !last ; ++p) {
146 if (p[0] == '\0')
147 last = 1;
148 else if (p[0] != '/')
149 continue;
150 *p = '\0';
151 if (p[1] == '\0')
152 last = 1;
153 if (first) {
154 /*
155 * POSIX 1003.2:
156 * For each dir operand that does not name an existing
157 * directory, effects equivalent to those cased by the
158 * following command shall occcur:
159 *
160 * mkdir -p -m $(umask -S),u+wx $(dirname dir) &&
161 * mkdir [-m mode] dir
162 *
163 * We change the user's umask and then restore it,
164 * instead of doing chmod's.
165 */
166 oumask = umask(0);
167 numask = oumask & ~(S_IWUSR | S_IXUSR);
57fed2af 168 umask(numask);
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169 first = 0;
170 }
171 if (last)
57fed2af 172 umask(oumask);
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173 if (stat(path, &sb)) {
174 if (errno != ENOENT ||
175 mkdir(path, last ? omode :
176 S_IRWXU | S_IRWXG | S_IRWXO) < 0) {
177 warn("%s", path);
178 retval = 1;
179 break;
180 } else if (vflag)
181 printf("%s\n", path);
182 }
183 else if ((sb.st_mode & S_IFMT) != S_IFDIR) {
184 if (last)
185 errno = EEXIST;
186 else
187 errno = ENOTDIR;
188 warn("%s", path);
189 retval = 1;
190 break;
191 }
192 if (!last)
193 *p = '/';
194 }
195 if (!first && !last)
57fed2af 196 umask(oumask);
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197 return (retval);
198}
199
988ed32d 200static void
b5744197 201usage(void)
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202{
203
57fed2af 204 fprintf(stderr, "usage: mkdir [-pv] [-m mode] directory ...\n");
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205 exit (EX_USAGE);
206}