mkdir/mkdir.c

   1 /*      $NetBSD: mkdir.c,v 1.19 1998/07/28 05:31:25 mycroft Exp $       */
   2
   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. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by the University of
  18  *      California, Berkeley and its contributors.
  19  * 4. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include <sys/cdefs.h>
  37 #ifndef lint
  38 __COPYRIGHT("@(#) Copyright (c) 1983, 1992, 1993\n\
  39         The Regents of the University of California.  All rights reserved.\n");
  40 #endif /* not lint */
  41
  42 #ifndef lint
  43 #if 0
  44 static char sccsid[] = "@(#)mkdir.c     8.2 (Berkeley) 1/25/94";
  45 #else
  46 __RCSID("$NetBSD: mkdir.c,v 1.19 1998/07/28 05:31:25 mycroft Exp $");
  47 #endif
  48 #endif /* not lint */
  49
  50 #include <sys/types.h>
  51 #include <sys/stat.h>
  52
  53 #include <err.h>
  54 #include <errno.h>
  55 #include <locale.h>
  56 #include <stdio.h>
  57 #include <stdlib.h>
  58 #include <string.h>
  59 #include <unistd.h>
  60
  61 int     mkpath __P((char *, mode_t, mode_t));
  62 void    usage __P((void));
  63 int     main __P((int, char *[]));
  64
  65 int
  66 main(argc, argv)
  67         int argc;
  68         char *argv[];
  69 {
  70         int ch, exitval, pflag;
  71         mode_t *set;
  72         mode_t mode, dir_mode;
  73
  74         (void)setlocale(LC_ALL, "");
  75
  76         /*
  77          * The default file mode is a=rwx (0777) with selected permissions
  78          * removed in accordance with the file mode creation mask.  For
  79          * intermediate path name components, the mode is the default modified
  80          * by u+wx so that the subdirectories can always be created.
  81          */
  82         mode = 0777 & ~umask(0);
  83         dir_mode = mode | S_IWUSR | S_IXUSR;
  84
  85         pflag = 0;
  86         while ((ch = getopt(argc, argv, "m:p")) != -1)
  87                 switch(ch) {
  88                 case 'p':
  89                         pflag = 1;
  90                         break;
  91                 case 'm':
  92                         if ((set = setmode(optarg)) == NULL)
  93                                 errx(1, "invalid file mode: %s", optarg);
  94                         mode = getmode(set, S_IRWXU | S_IRWXG | S_IRWXO);
  95                         break;
  96                 case '?':
  97                 default:
  98                         usage();
  99                 }
 100         argc -= optind;
 101         argv += optind;
 102
 103         if (*argv == NULL)
 104                 usage();
 105
 106         for (exitval = 0; *argv != NULL; ++argv) {
 107                 char *slash;
 108
 109                 /* Remove trailing slashes, per POSIX. */
 110                 slash = strrchr(*argv, '\0');
 111                 while (--slash > *argv && *slash == '/')
 112                         *slash = '\0';
 113
 114                 if (pflag) {
 115                         if (mkpath(*argv, mode, dir_mode) < 0)
 116                                 exitval = 1;
 117                 } else {
 118                         if (mkdir(*argv, mode) < 0) {
 119                                 warn("%s", *argv);
 120                                 exitval = 1;
 121                         }
 122                         /*
 123                          * The mkdir() and umask() calls both honor only the low
 124                          * nine bits, so if you try to set a mode including the
 125                          * sticky, setuid, setgid bits you lose them. So chmod().
 126                          */
 127                         else if (chmod(*argv, mode) == -1) {
 128                                 warn("%s", *argv);
 129                                 exitval = 1;
 130                         }
 131                 }
 132         }
 133         exit(exitval);
 134         /* NOTREACHED */
 135 }
 136
 137 /*
 138  * mkpath -- create directories.
 139  *      path     - path
 140  *      mode     - file mode of terminal directory
 141  *      dir_mode - file mode of intermediate directories
 142  */
 143 int
 144 mkpath(path, mode, dir_mode)
 145         char *path;
 146         mode_t mode;
 147         mode_t dir_mode;
 148 {
 149         struct stat sb;
 150         char *slash;
 151         int done = 0;
 152
 153         slash = path;
 154
 155         while (!done) {
 156                 slash += strspn(slash, "/");
 157                 slash += strcspn(slash, "/");
 158
 159                 done = (*slash == '\0');
 160                 *slash = '\0';
 161
 162                 if (stat(path, &sb)) {
 163                         if (errno != ENOENT
 164                             || mkdir(path, done ? mode : dir_mode)) {
 165                                 warn("%s", path);
 166                                 return (-1);
 167                         }
 168                         /*
 169                          * The mkdir() and umask() calls both honor only the low
 170                          * nine bits, so if you try to set a mode including the
 171                          * sticky, setuid, setgid bits you lose them. So chmod().
 172                          */
 173                         if (chmod(path, done ? mode : dir_mode) == -1) {
 174                                 warn("%s", path);
 175                                 return (-1);
 176                         }
 177                 } else if (!S_ISDIR(sb.st_mode)) {
 178                         warnx("%s: %s", path, strerror(ENOTDIR));
 179                         return (-1);
 180                 }
 181
 182                 *slash = '/';
 183         }
 184
 185         return (0);
 186 }
 187
 188 void
 189 usage()
 190 {
 191
 192         (void)fprintf(stderr, "usage: mkdir [-p] [-m mode] dirname ...\n");
 193         exit(1);
 194         /* NOTREACHED */
 195 }