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. 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 32 static 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 38 static char sccsid[] = "@(#)mkdir.c 8.2 (Berkeley) 1/25/94"; 39 #endif /* not lint */ 40 #endif 41 #include <sys/cdefs.h> 42 __FBSDID("$FreeBSD$"); 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 56 static int build(char *, mode_t); 57 static void usage(void); 58 59 static int vflag; 60 61 int 62 main(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 */ 138 static int 139 build(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 } 210 211 static void 212 usage(void) 213 { 214 215 (void)fprintf(stderr, 216 "usage: mkdir [-pv] [-m mode] directory_name ...\n"); 217 exit (EX_USAGE); 218 } 219