1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1983, 1992, 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 #if 0 33 #ifndef lint 34 static char const copyright[] = 35 "@(#) Copyright (c) 1983, 1992, 1993\n\ 36 The Regents of the University of California. All rights reserved.\n"; 37 #endif /* not lint */ 38 39 #endif 40 #include <sys/cdefs.h> 41 #include <sys/types.h> 42 #include <sys/stat.h> 43 44 #include <err.h> 45 #include <errno.h> 46 #include <libgen.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <string.h> 50 #include <sysexits.h> 51 #include <unistd.h> 52 53 static int build(char *, mode_t); 54 static void usage(void); 55 56 static int vflag; 57 58 int 59 main(int argc, char *argv[]) 60 { 61 int ch, exitval, success, pflag; 62 mode_t omode; 63 void *set = NULL; 64 char *mode; 65 66 omode = pflag = 0; 67 mode = NULL; 68 while ((ch = getopt(argc, argv, "m:pv")) != -1) 69 switch(ch) { 70 case 'm': 71 mode = optarg; 72 break; 73 case 'p': 74 pflag = 1; 75 break; 76 case 'v': 77 vflag = 1; 78 break; 79 case '?': 80 default: 81 usage(); 82 } 83 84 argc -= optind; 85 argv += optind; 86 if (argv[0] == NULL) 87 usage(); 88 89 if (mode == NULL) { 90 omode = S_IRWXU | S_IRWXG | S_IRWXO; 91 } else { 92 if ((set = setmode(mode)) == NULL) 93 errx(1, "invalid file mode: %s", mode); 94 omode = getmode(set, S_IRWXU | S_IRWXG | S_IRWXO); 95 free(set); 96 } 97 98 for (exitval = 0; *argv != NULL; ++argv) { 99 if (pflag) { 100 success = build(*argv, omode); 101 } else if (mkdir(*argv, omode) < 0) { 102 if (errno == ENOTDIR || errno == ENOENT) 103 warn("%s", dirname(*argv)); 104 else 105 warn("%s", *argv); 106 success = 0; 107 } else { 108 success = 1; 109 if (vflag) 110 (void)printf("%s\n", *argv); 111 } 112 if (!success) 113 exitval = 1; 114 /* 115 * The mkdir() and umask() calls both honor only the low 116 * nine bits, so if you try to set a mode including the 117 * sticky, setuid, setgid bits you lose them. Don't do 118 * this unless the user has specifically requested a mode, 119 * as chmod will (obviously) ignore the umask. Do this 120 * on newly created directories only. 121 */ 122 if (success == 1 && mode != NULL && chmod(*argv, omode) == -1) { 123 warn("%s", *argv); 124 exitval = 1; 125 } 126 } 127 exit(exitval); 128 } 129 130 131 /* 132 * Returns 1 if a directory has been created, 133 * 2 if it already existed, and 0 on failure. 134 */ 135 static int 136 build(char *path, mode_t omode) 137 { 138 struct stat sb; 139 mode_t numask, oumask; 140 int first, last, retval; 141 char *p; 142 143 p = path; 144 oumask = 0; 145 retval = 1; 146 if (p[0] == '/') /* Skip leading '/'. */ 147 ++p; 148 for (first = 1, last = 0; !last ; ++p) { 149 if (p[0] == '\0') 150 last = 1; 151 else if (p[0] != '/') 152 continue; 153 *p = '\0'; 154 if (!last && p[1] == '\0') 155 last = 1; 156 if (first) { 157 /* 158 * POSIX 1003.2: 159 * For each dir operand that does not name an existing 160 * directory, effects equivalent to those caused by the 161 * following command shall occur: 162 * 163 * mkdir -p -m $(umask -S),u+wx $(dirname dir) && 164 * mkdir [-m mode] dir 165 * 166 * We change the user's umask and then restore it, 167 * instead of doing chmod's. 168 */ 169 oumask = umask(0); 170 numask = oumask & ~(S_IWUSR | S_IXUSR); 171 (void)umask(numask); 172 first = 0; 173 } 174 if (last) 175 (void)umask(oumask); 176 if (mkdir(path, last ? omode : S_IRWXU | S_IRWXG | S_IRWXO) < 0) { 177 if (errno == EEXIST || errno == EISDIR) { 178 if (stat(path, &sb) < 0) { 179 warn("%s", path); 180 retval = 0; 181 break; 182 } else if (!S_ISDIR(sb.st_mode)) { 183 if (last) 184 errno = EEXIST; 185 else 186 errno = ENOTDIR; 187 warn("%s", path); 188 retval = 0; 189 break; 190 } 191 if (last) 192 retval = 2; 193 } else { 194 warn("%s", path); 195 retval = 0; 196 break; 197 } 198 } else if (vflag) 199 printf("%s\n", path); 200 if (!last) 201 *p = '/'; 202 } 203 if (!first && !last) 204 (void)umask(oumask); 205 return (retval); 206 } 207 208 static void 209 usage(void) 210 { 211 212 (void)fprintf(stderr, 213 "usage: mkdir [-pv] [-m mode] directory_name ...\n"); 214 exit (EX_USAGE); 215 } 216