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 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#if 0
31#ifndef lint
32static char const copyright[] =
33"@(#) Copyright (c) 1983, 1992, 1993\n\
34 The Regents of the University of California. All rights reserved.\n";
35#endif /* not lint */
36
37#ifndef lint
38static char sccsid[] = "@(#)mkdir.c 8.2 (Berkeley) 1/25/94";
39#endif /* not lint */
40#endif
41#include <sys/cdefs.h>
42__FBSDID("$FreeBSD: stable/9/bin/mkdir/mkdir.c 250084 2013-04-30 00:49:25Z eadler $");
43
44#include <sys/types.h>
45#include <sys/stat.h>
46
47#include <err.h>
48#include <errno.h>
49#include <libgen.h>
50#include <stdio.h>
51#include <stdlib.h>
52#include <string.h>
53#include <sysexits.h>
54#include <unistd.h>
55
56static int build(char *, mode_t);
57static void usage(void);
58
59int vflag;
60
61int
62main(int argc, char *argv[])
63{
64 int ch, exitval, success, pflag;
65 mode_t omode;
66 void *set = NULL;
67 char *mode;
68
69 omode = pflag = 0;
70 mode = NULL;
71 while ((ch = getopt(argc, argv, "m:pv")) != -1)
72 switch(ch) {
73 case 'm':
74 mode = optarg;
75 break;
76 case 'p':
77 pflag = 1;
78 break;
79 case 'v':
80 vflag = 1;
81 break;
82 case '?':
83 default:
84 usage();
85 }
86
87 argc -= optind;
88 argv += optind;
89 if (argv[0] == NULL)
90 usage();
91
92 if (mode == NULL) {
93 omode = S_IRWXU | S_IRWXG | S_IRWXO;
94 } else {
95 if ((set = setmode(mode)) == NULL)
96 errx(1, "invalid file mode: %s", mode);
97 omode = getmode(set, S_IRWXU | S_IRWXG | S_IRWXO);
98 free(set);
99 }
100
101 for (exitval = 0; *argv != NULL; ++argv) {
102 if (pflag) {
103 success = build(*argv, omode);
104 } else if (mkdir(*argv, omode) < 0) {
105 if (errno == ENOTDIR || errno == ENOENT)
106 warn("%s", dirname(*argv));
107 else
108 warn("%s", *argv);
109 success = 0;
110 } else {
111 success = 1;
112 if (vflag)
113 (void)printf("%s\n", *argv);
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. Do this
123 * on newly created directories only.
124 */
125 if (success == 1 && mode != NULL && chmod(*argv, omode) == -1) {
126 warn("%s", *argv);
127 exitval = 1;
128 }
129 }
130 exit(exitval);
131}
132
133
134/*
135 * Returns 1 if a directory has been created,
136 * 2 if it already existed, and 0 on failure.
137 */
138static int
139build(char *path, mode_t omode)
140{
141 struct stat sb;
142 mode_t numask, oumask;
143 int first, last, retval;
144 char *p;
145
146 p = path;
147 oumask = 0;
148 retval = 1;
149 if (p[0] == '/') /* Skip leading '/'. */
150 ++p;
151 for (first = 1, last = 0; !last ; ++p) {
152 if (p[0] == '\0')
153 last = 1;
154 else if (p[0] != '/')
155 continue;
156 *p = '\0';
157 if (!last && p[1] == '\0')
158 last = 1;
159 if (first) {
160 /*
161 * POSIX 1003.2:
162 * For each dir operand that does not name an existing
163 * directory, effects equivalent to those caused by the
164 * following command shall occcur:
165 *
166 * mkdir -p -m $(umask -S),u+wx $(dirname dir) &&
167 * mkdir [-m mode] dir
168 *
169 * We change the user's umask and then restore it,
170 * instead of doing chmod's.
171 */
172 oumask = umask(0);
173 numask = oumask & ~(S_IWUSR | S_IXUSR);
174 (void)umask(numask);
175 first = 0;
176 }
177 if (last)
178 (void)umask(oumask);
179 if (mkdir(path, last ? omode : S_IRWXU | S_IRWXG | S_IRWXO) < 0) {
180 if (errno == EEXIST || errno == EISDIR) {
181 if (stat(path, &sb) < 0) {
182 warn("%s", path);
183 retval = 0;
184 break;
185 } else if (!S_ISDIR(sb.st_mode)) {
186 if (last)
187 errno = EEXIST;
188 else
189 errno = ENOTDIR;
190 warn("%s", path);
191 retval = 0;
192 break;
193 }
194 if (last)
195 retval = 2;
196 } else {
197 warn("%s", path);
198 retval = 0;
199 break;
200 }
201 } else if (vflag)
202 printf("%s\n", path);
203 if (!last)
204 *p = '/';
205 }
206 if (!first && !last)
207 (void)umask(oumask);
208 return (retval);
209}
210
211static void
212usage(void)
213{
214
215 (void)fprintf(stderr,
216 "usage: mkdir [-pv] [-m mode] directory_name ...\n");
217 exit (EX_USAGE);
218}