mkdir.c revision 140816
1223534Shselasky/*- 2223534Shselasky * Copyright (c) 1983, 1992, 1993 3223534Shselasky * The Regents of the University of California. All rights reserved. 4223534Shselasky * 5223534Shselasky * Redistribution and use in source and binary forms, with or without 6223534Shselasky * modification, are permitted provided that the following conditions 7223534Shselasky * are met: 8223534Shselasky * 1. Redistributions of source code must retain the above copyright 9223534Shselasky * notice, this list of conditions and the following disclaimer. 10223534Shselasky * 2. Redistributions in binary form must reproduce the above copyright 11223534Shselasky * notice, this list of conditions and the following disclaimer in the 12223534Shselasky * documentation and/or other materials provided with the distribution. 13223534Shselasky * 4. Neither the name of the University nor the names of its contributors 14223534Shselasky * may be used to endorse or promote products derived from this software 15223534Shselasky * without specific prior written permission. 16223534Shselasky * 17223534Shselasky * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18223534Shselasky * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19223534Shselasky * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20223534Shselasky * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21223534Shselasky * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22223534Shselasky * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23223534Shselasky * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24223534Shselasky * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25223534Shselasky * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26223534Shselasky * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27223534Shselasky * SUCH DAMAGE. 28223534Shselasky */ 29223534Shselasky 30223534Shselasky#if 0 31223534Shselasky#ifndef lint 32223534Shselaskystatic char const copyright[] = 33223534Shselasky"@(#) Copyright (c) 1983, 1992, 1993\n\ 34223534Shselasky The Regents of the University of California. All rights reserved.\n"; 35223534Shselasky#endif /* not lint */ 36223534Shselasky 37223534Shselasky#ifndef lint 38223534Shselaskystatic char sccsid[] = "@(#)mkdir.c 8.2 (Berkeley) 1/25/94"; 39223534Shselasky#endif /* not lint */ 40223534Shselasky#endif 41223534Shselasky#include <sys/cdefs.h> 42255122Sian__FBSDID("$FreeBSD: head/bin/mkdir/mkdir.c 140816 2005-01-25 14:31:19Z ssouhlal $"); 43223534Shselasky 44223534Shselasky#include <sys/types.h> 45223534Shselasky#include <sys/stat.h> 46223534Shselasky 47223534Shselasky#include <err.h> 48223534Shselasky#include <errno.h> 49223534Shselasky#include <libgen.h> 50223534Shselasky#include <stdio.h> 51223535Shselasky#include <stdlib.h> 52223535Shselasky#include <string.h> 53223535Shselasky#include <sysexits.h> 54223535Shselasky#include <unistd.h> 55223534Shselasky 56223535Shselaskystatic int build(char *, mode_t); 57223535Shselaskystatic void usage(void); 58223535Shselasky 59223535Shselaskyint vflag; 60223534Shselasky 61223534Shselaskyint 62223534Shselaskymain(int argc, char *argv[]) 63223534Shselasky{ 64223534Shselasky int ch, exitval, success, pflag; 65223534Shselasky mode_t omode; 66223534Shselasky void *set = NULL; 67223534Shselasky char *mode; 68223534Shselasky 69223534Shselasky omode = pflag = 0; 70223534Shselasky mode = NULL; 71223534Shselasky while ((ch = getopt(argc, argv, "m:pv")) != -1) 72223534Shselasky switch(ch) { 73223534Shselasky case 'm': 74223534Shselasky mode = optarg; 75223534Shselasky break; 76223534Shselasky 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 success = 1; 103 if (pflag) { 104 if (build(*argv, omode)) 105 success = 0; 106 } else if (mkdir(*argv, omode) < 0) { 107 if (errno == ENOTDIR || errno == ENOENT) 108 warn("%s", dirname(*argv)); 109 else 110 warn("%s", *argv); 111 success = 0; 112 } else 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. 123 */ 124 if (success && mode != NULL && chmod(*argv, omode) == -1) { 125 warn("%s", *argv); 126 exitval = 1; 127 } 128 } 129 exit(exitval); 130} 131 132int 133build(char *path, mode_t omode) 134{ 135 struct stat sb; 136 mode_t numask, oumask; 137 int first, last, retval; 138 char *p; 139 140 p = path; 141 oumask = 0; 142 retval = 0; 143 if (p[0] == '/') /* Skip leading '/'. */ 144 ++p; 145 for (first = 1, last = 0; !last ; ++p) { 146 if (p[0] == '\0') 147 last = 1; 148 else if (p[0] != '/') 149 continue; 150 *p = '\0'; 151 if (!last && p[1] == '\0') 152 last = 1; 153 if (first) { 154 /* 155 * POSIX 1003.2: 156 * For each dir operand that does not name an existing 157 * directory, effects equivalent to those cased by the 158 * following command shall occcur: 159 * 160 * mkdir -p -m $(umask -S),u+wx $(dirname dir) && 161 * mkdir [-m mode] dir 162 * 163 * We change the user's umask and then restore it, 164 * instead of doing chmod's. 165 */ 166 oumask = umask(0); 167 numask = oumask & ~(S_IWUSR | S_IXUSR); 168 (void)umask(numask); 169 first = 0; 170 } 171 if (last) 172 (void)umask(oumask); 173 if (mkdir(path, last ? omode : S_IRWXU | S_IRWXG | S_IRWXO) < 0) { 174 if (errno == EEXIST || errno == EISDIR) { 175 if (stat(path, &sb) < 0) { 176 warn("%s", path); 177 retval = 1; 178 break; 179 } else if (!S_ISDIR(sb.st_mode)) { 180 if (last) 181 errno = EEXIST; 182 else 183 errno = ENOTDIR; 184 warn("%s", path); 185 retval = 1; 186 break; 187 } 188 } else { 189 warn("%s", path); 190 retval = 1; 191 break; 192 } 193 } else if (vflag) 194 printf("%s\n", path); 195 if (!last) 196 *p = '/'; 197 } 198 if (!first && !last) 199 (void)umask(oumask); 200 return (retval); 201} 202 203void 204usage(void) 205{ 206 207 (void)fprintf(stderr, "usage: mkdir [-pv] [-m mode] directory ...\n"); 208 exit (EX_USAGE); 209} 210