mkdir.c revision 140816
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 * 4. 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 32static 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 38static char sccsid[] = "@(#)mkdir.c 8.2 (Berkeley) 1/25/94"; 39#endif /* not lint */ 40#endif 41#include <sys/cdefs.h> 42__FBSDID("$FreeBSD: head/bin/mkdir/mkdir.c 140816 2005-01-25 14:31:19Z ssouhlal $"); 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 56static int build(char *, mode_t); 57static void usage(void); 58 59int vflag; 60 61int 62main(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 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