File: | src/bin/mkdir/mkdir.c |
Warning: | line 79, column 2 Value stored to 'argc' is never read |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
1 | /* $OpenBSD: mkdir.c,v 1.31 2019/06/28 13:34:59 deraadt Exp $ */ |
2 | /* $NetBSD: mkdir.c,v 1.14 1995/06/25 21:59:21 mycroft Exp $ */ |
3 | |
4 | /* |
5 | * Copyright (c) 1983, 1992, 1993 |
6 | * The Regents of the University of California. All rights reserved. |
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. Neither the name of the University nor the names of its contributors |
17 | * may be used to endorse or promote products derived from this software |
18 | * without specific prior written permission. |
19 | * |
20 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
30 | * SUCH DAMAGE. |
31 | */ |
32 | |
33 | #include <sys/types.h> |
34 | #include <sys/stat.h> |
35 | |
36 | #include <err.h> |
37 | #include <errno(*__errno()).h> |
38 | #include <stdio.h> |
39 | #include <stdlib.h> |
40 | #include <string.h> |
41 | #include <unistd.h> |
42 | |
43 | extern char *__progname; |
44 | |
45 | int mkpath(char *, mode_t, mode_t); |
46 | static void __dead__attribute__((__noreturn__)) usage(void); |
47 | |
48 | int |
49 | main(int argc, char *argv[]) |
50 | { |
51 | int ch, rv, exitval, pflag; |
52 | void *set; |
53 | mode_t mode, dir_mode; |
54 | |
55 | /* |
56 | * The default file mode is a=rwx (0777) with selected permissions |
57 | * removed in accordance with the file mode creation mask. For |
58 | * intermediate path name components, the mode is the default modified |
59 | * by u+wx so that the subdirectories can always be created. |
60 | */ |
61 | mode = 0777 & ~umask(0); |
62 | dir_mode = mode | S_IWUSR0000200 | S_IXUSR0000100; |
63 | |
64 | pflag = 0; |
65 | while ((ch = getopt(argc, argv, "m:p")) != -1) |
66 | switch(ch) { |
67 | case 'p': |
68 | pflag = 1; |
69 | break; |
70 | case 'm': |
71 | if ((set = setmode(optarg)) == NULL((void *)0)) |
72 | errx(1, "invalid file mode: %s", optarg); |
73 | mode = getmode(set, S_IRWXU0000700 | S_IRWXG0000070 | S_IRWXO0000007); |
74 | free(set); |
75 | break; |
76 | default: |
77 | usage(); |
78 | } |
79 | argc -= optind; |
Value stored to 'argc' is never read | |
80 | argv += optind; |
81 | |
82 | if ((mode & (S_ISUID0004000 | S_ISGID0002000 | S_ISTXT0001000)) == 0) { |
83 | if (pledge("stdio rpath cpath fattr", NULL((void *)0)) == -1) |
84 | err(1, "pledge"); |
85 | } |
86 | |
87 | if (*argv == NULL((void *)0)) |
88 | usage(); |
89 | |
90 | for (exitval = 0; *argv != NULL((void *)0); ++argv) { |
91 | char *slash; |
92 | |
93 | /* Remove trailing slashes, per POSIX. */ |
94 | slash = strrchr(*argv, '\0'); |
95 | while (--slash > *argv && *slash == '/') |
96 | *slash = '\0'; |
97 | |
98 | if (pflag) { |
99 | rv = mkpath(*argv, mode, dir_mode); |
100 | } else { |
101 | rv = mkdir(*argv, mode); |
102 | /* |
103 | * The mkdir() and umask() calls both honor only the |
104 | * low nine bits, so if you try to set a mode including |
105 | * the sticky, setuid, setgid bits you lose them. Don't |
106 | * do this unless the user has specifically requested |
107 | * a mode as chmod will (obviously) ignore the umask. |
108 | */ |
109 | if (rv == 0 && mode > 0777) |
110 | rv = chmod(*argv, mode); |
111 | } |
112 | if (rv == -1) { |
113 | warn("%s", *argv); |
114 | exitval = 1; |
115 | } |
116 | } |
117 | return exitval; |
118 | } |
119 | |
120 | /* |
121 | * mkpath -- create directories. |
122 | * path - path |
123 | * mode - file mode of terminal directory |
124 | * dir_mode - file mode of intermediate directories |
125 | */ |
126 | int |
127 | mkpath(char *path, mode_t mode, mode_t dir_mode) |
128 | { |
129 | struct stat sb; |
130 | char *slash; |
131 | int done; |
132 | |
133 | slash = path; |
134 | |
135 | for (;;) { |
136 | slash += strspn(slash, "/"); |
137 | slash += strcspn(slash, "/"); |
138 | |
139 | done = (*slash == '\0'); |
140 | *slash = '\0'; |
141 | |
142 | if (mkdir(path, done ? mode : dir_mode) == 0) { |
143 | if (mode > 0777 && chmod(path, mode) == -1) |
144 | return (-1); |
145 | } else { |
146 | int mkdir_errno = errno(*__errno()); |
147 | |
148 | if (stat(path, &sb) == -1) { |
149 | /* Not there; use mkdir()s errno */ |
150 | errno(*__errno()) = mkdir_errno; |
151 | return (-1); |
152 | } |
153 | if (!S_ISDIR(sb.st_mode)((sb.st_mode & 0170000) == 0040000)) { |
154 | /* Is there, but isn't a directory */ |
155 | errno(*__errno()) = ENOTDIR20; |
156 | return (-1); |
157 | } |
158 | } |
159 | |
160 | if (done) |
161 | break; |
162 | |
163 | *slash = '/'; |
164 | } |
165 | |
166 | return (0); |
167 | } |
168 | |
169 | static void __dead__attribute__((__noreturn__)) |
170 | usage(void) |
171 | { |
172 | (void)fprintf(stderr(&__sF[2]), "usage: %s [-p] [-m mode] directory ...\n", |
173 | __progname); |
174 | exit(1); |
175 | } |