1 /* $OpenBSD: mkdir.c,v 1.26 2015/10/07 14:17:18 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.h> 38 #include <locale.h> 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <string.h> 42 #include <unistd.h> 43 44 extern char *__progname; 45 46 int mkpath(char *, mode_t, mode_t); 47 void usage(void); 48 49 int 50 main(int argc, char *argv[]) 51 { 52 int ch, rv, exitval, pflag; 53 void *set; 54 mode_t mode, dir_mode; 55 56 setlocale(LC_ALL, ""); 57 58 /* 59 * The default file mode is a=rwx (0777) with selected permissions 60 * removed in accordance with the file mode creation mask. For 61 * intermediate path name components, the mode is the default modified 62 * by u+wx so that the subdirectories can always be created. 63 */ 64 mode = 0777 & ~umask(0); 65 dir_mode = mode | S_IWUSR | S_IXUSR; 66 67 pflag = 0; 68 while ((ch = getopt(argc, argv, "m:p")) != -1) 69 switch(ch) { 70 case 'p': 71 pflag = 1; 72 break; 73 case 'm': 74 if ((set = setmode(optarg)) == NULL) 75 errx(1, "invalid file mode: %s", optarg); 76 mode = getmode(set, S_IRWXU | S_IRWXG | S_IRWXO); 77 free(set); 78 break; 79 default: 80 usage(); 81 } 82 argc -= optind; 83 argv += optind; 84 85 if (mode & (S_ISUID | S_ISGID | S_ISTXT) == 0) { 86 if (tame("stdio cpath rpath fattr", NULL) == -1) 87 err(1, "tame"); 88 } 89 90 if (*argv == NULL) 91 usage(); 92 93 for (exitval = 0; *argv != NULL; ++argv) { 94 char *slash; 95 96 /* Remove trailing slashes, per POSIX. */ 97 slash = strrchr(*argv, '\0'); 98 while (--slash > *argv && *slash == '/') 99 *slash = '\0'; 100 101 if (pflag) { 102 rv = mkpath(*argv, mode, dir_mode); 103 } else { 104 rv = mkdir(*argv, mode); 105 /* 106 * The mkdir() and umask() calls both honor only the 107 * low nine bits, so if you try to set a mode including 108 * the sticky, setuid, setgid bits you lose them. Don't 109 * do this unless the user has specifically requested 110 * a mode as chmod will (obviously) ignore the umask. 111 */ 112 if (rv == 0 && mode > 0777) 113 rv = chmod(*argv, mode); 114 } 115 if (rv < 0) { 116 warn("%s", *argv); 117 exitval = 1; 118 } 119 } 120 exit(exitval); 121 } 122 123 /* 124 * mkpath -- create directories. 125 * path - path 126 * mode - file mode of terminal directory 127 * dir_mode - file mode of intermediate directories 128 */ 129 int 130 mkpath(char *path, mode_t mode, mode_t dir_mode) 131 { 132 struct stat sb; 133 char *slash; 134 int done; 135 136 slash = path; 137 138 for (;;) { 139 slash += strspn(slash, "/"); 140 slash += strcspn(slash, "/"); 141 142 done = (*slash == '\0'); 143 *slash = '\0'; 144 145 if (mkdir(path, done ? mode : dir_mode) == 0) { 146 if (mode > 0777 && chmod(path, mode) < 0) 147 return (-1); 148 } else { 149 int mkdir_errno = errno; 150 151 if (stat(path, &sb)) { 152 /* Not there; use mkdir()s errno */ 153 errno = mkdir_errno; 154 return (-1); 155 } 156 if (!S_ISDIR(sb.st_mode)) { 157 /* Is there, but isn't a directory */ 158 errno = ENOTDIR; 159 return (-1); 160 } 161 } 162 163 if (done) 164 break; 165 166 *slash = '/'; 167 } 168 169 return (0); 170 } 171 172 void 173 usage(void) 174 { 175 (void)fprintf(stderr, "usage: %s [-p] [-m mode] directory ...\n", 176 __progname); 177 exit(1); 178 } 179