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root/usr/bin/mkdir/mkdir.c

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DEFINITIONS

This source file includes following definitions.
  1. main
  2. build
  3. usage

   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 #include <sys/mount.h>
  31 
  32 #include <unistd.h>
  33 #include <err.h>
  34 #include <stdlib.h>
  35 #include <stdio.h>
  36 #include <errno.h>
  37 
  38 #ifdef CMDBOX
  39 #define main(argc, argv)        mkdir_main(argc, argv)
  40 #endif
  41 
  42 static int      build(char *);
  43 static void     usage(void);
  44 
  45 int
  46 main(int argc, char *argv[])
  47 {
  48         int ch, exitval, pflag;
  49 
  50         pflag = 0;
  51         while ((ch = getopt(argc, argv, "p")) != EOF)
  52                 switch(ch) {
  53                 case 'p':
  54                         pflag = 1;
  55                         break;
  56                 case '?':
  57                 default:
  58                         usage();
  59                 }
  60         argc -= optind;
  61         argv += optind;
  62 
  63         if (argv[0] == NULL)
  64                 usage();
  65 
  66         for (exitval = 0; *argv != NULL; ++argv) {
  67                 if (pflag && build(*argv)) {
  68                         exitval = 1;
  69                         continue;
  70                 }
  71                 if (mkdir(*argv,
  72                           (mode_t)(S_IRWXU | S_IRWXG | S_IRWXO)) < 0) {
  73                         warn("%s", *argv);
  74                         exitval = 1;
  75                 }
  76         }
  77         exit(exitval);
  78         /* NOTREACHED */
  79 }
  80 
  81 static int
  82 build(path)
  83         char *path;
  84 {
  85         struct stat sb;
  86         char *p;
  87 
  88         p = path;
  89         if (p[0] == '/')                /* Skip leading '/'. */
  90                 ++p;
  91         for (;; ++p) {
  92                 if (p[0] == '\0' || (p[0] == '/' && p[1] == '\0'))
  93                         break;
  94                 if (p[0] != '/')
  95                         continue;
  96                 *p = '\0';
  97                 if (stat(path, &sb)) {
  98                         if (errno != ENOENT ||
  99                             mkdir(path, (mode_t)(S_IRWXU | S_IRWXG | S_IRWXO)) < 0) {
 100                                 warn("%s", path);
 101                                 return 1;
 102                         }
 103                 }
 104                 *p = '/';
 105         }
 106         return 0;
 107 }
 108 
 109 static void
 110 usage()
 111 {
 112         (void)fprintf(stderr, "usage: mkdir [-p] directory ...\n");
 113         exit (1);
 114 }

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