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. 32 */ 33 34 #ifndef lint 35 static char const copyright[] = 36 "@(#) Copyright (c) 1983, 1992, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "@(#)mkdir.c 8.2 (Berkeley) 1/25/94"; 43 #endif 44 static const char rcsid[] = 45 "$FreeBSD$"; 46 #endif /* not lint */ 47 48 #include <sys/types.h> 49 #include <sys/stat.h> 50 51 #include <err.h> 52 #include <errno.h> 53 #include <stdio.h> 54 #include <stdlib.h> 55 #include <string.h> 56 #include <unistd.h> 57 58 int build __P((char *, mode_t)); 59 void usage __P((void)); 60 61 int 62 main(argc, argv) 63 int argc; 64 char *argv[]; 65 { 66 int ch, exitval, success, omode, pflag; 67 mode_t *set = (mode_t *)NULL; 68 char *mode; 69 70 omode = pflag = 0; 71 mode = NULL; 72 while ((ch = getopt(argc, argv, "m:p")) != -1) 73 switch(ch) { 74 case 'p': 75 pflag = 1; 76 break; 77 case 'm': 78 mode = optarg; 79 break; 80 case '?': 81 default: 82 usage(); 83 } 84 85 argc -= optind; 86 argv += optind; 87 if (argv[0] == NULL) 88 usage(); 89 90 if (mode == NULL) { 91 omode = S_IRWXU | S_IRWXG | S_IRWXO; 92 } else { 93 if ((set = setmode(mode)) == NULL) 94 errx(1, "invalid file mode: %s", mode); 95 omode = getmode(set, S_IRWXU | S_IRWXG | S_IRWXO); 96 free(set); 97 } 98 99 for (exitval = 0; *argv != NULL; ++argv) { 100 success = 1; 101 if (pflag) { 102 if (build(*argv, omode)) 103 success = 0; 104 } else if (mkdir(*argv, omode) < 0) { 105 warn("%s", *argv); 106 success = 0; 107 } 108 if (!success) 109 exitval = 1; 110 /* 111 * The mkdir() and umask() calls both honor only the low 112 * nine bits, so if you try to set a mode including the 113 * sticky, setuid, setgid bits you lose them. Don't do 114 * this unless the user has specifically requested a mode, 115 * as chmod will (obviously) ignore the umask. 116 */ 117 if (success && mode != NULL && chmod(*argv, omode) == -1) { 118 warn("%s", *argv); 119 exitval = 1; 120 } 121 } 122 exit(exitval); 123 } 124 125 int 126 build(path, omode) 127 char *path; 128 mode_t omode; 129 { 130 struct stat sb; 131 mode_t numask, oumask; 132 int first, last, retval; 133 char *p; 134 135 p = path; 136 oumask = 0; 137 retval = 0; 138 if (p[0] == '/') /* Skip leading '/'. */ 139 ++p; 140 for (first = 1, last = 0; !last ; ++p) { 141 if (p[0] == '\0') 142 last = 1; 143 else if (p[0] != '/') 144 continue; 145 *p = '\0'; 146 if (p[1] == '\0') 147 last = 1; 148 if (first) { 149 /* 150 * POSIX 1003.2: 151 * For each dir operand that does not name an existing 152 * directory, effects equivalent to those cased by the 153 * following command shall occcur: 154 * 155 * mkdir -p -m $(umask -S),u+wx $(dirname dir) && 156 * mkdir [-m mode] dir 157 * 158 * We change the user's umask and then restore it, 159 * instead of doing chmod's. 160 */ 161 oumask = umask(0); 162 numask = oumask & ~(S_IWUSR | S_IXUSR); 163 (void)umask(numask); 164 first = 0; 165 } 166 if (last) 167 (void)umask(oumask); 168 if (stat(path, &sb)) { 169 if (errno != ENOENT || 170 mkdir(path, last ? omode : 171 S_IRWXU | S_IRWXG | S_IRWXO) < 0) { 172 warn("%s", path); 173 retval = 1; 174 break; 175 } 176 } 177 else if ((sb.st_mode & S_IFMT) != S_IFDIR) { 178 if (last) 179 errno = EEXIST; 180 else 181 errno = ENOTDIR; 182 warn("%s", path); 183 retval = 1; 184 break; 185 } 186 if (!last) 187 *p = '/'; 188 } 189 if (!first && !last) 190 (void)umask(oumask); 191 return (retval); 192 } 193 194 void 195 usage() 196 { 197 (void)fprintf(stderr, "usage: mkdir [-p] [-m mode] directory ...\n"); 198 exit (1); 199 } 200