src/mkdir.c

   1 /* mkdir -- make directories
   2    Copyright (C) 1990, 1995 Free Software Foundation, Inc.
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 2, or (at your option)
   7    any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software
  16    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  17
  18 /* Options:
  19    -p, --parent         Ensure that the given path(s) exist:
  20                         Make any missing parent directories for each argument.
  21                         Parent dirs default to umask modified by `u+wx'.
  22                         Do not consider an argument directory that already
  23                         exists to be an error.
  24    -m, --mode=mode      Set the mode of created directories to `mode', which is
  25                         symbolic as in chmod and uses the umask as a point of
  26                         departure.
  27
  28    David MacKenzie <djm@ai.mit.edu>  */
  29
  30 #include <config.h>
  31 #include <stdio.h>
  32 #include <getopt.h>
  33 #include <sys/types.h>
  34
  35 #include "system.h"
  36 #include "modechange.h"
  37 #include "makepath.h"
  38 #include "version.h"
  39 #include "error.h"
  40
  41 static void usage ();
  42
  43 /* The name this program was run with. */
  44 char *program_name;
  45
  46 /* If nonzero, ensure that all parents of the specified directory exist.  */
  47 static int path_mode;
  48
  49 /* If non-zero, display usage information and exit.  */
  50 static int show_help;
  51
  52 /* If non-zero, print the version on standard output and exit.  */
  53 static int show_version;
  54
  55 static struct option const longopts[] =
  56 {
  57   {"mode", required_argument, NULL, 'm'},
  58   {"path", no_argument, &path_mode, 1},
  59   {"parents", no_argument, &path_mode, 1},
  60   {"help", no_argument, &show_help, 1},
  61   {"version", no_argument, &show_version, 1},
  62   {NULL, 0, NULL, 0}
  63 };
  64
  65 void
  66 main (argc, argv)
  67      int argc;
  68      char **argv;
  69 {
  70   unsigned int newmode;
  71   unsigned int parent_mode;
  72   char *symbolic_mode = NULL;
  73   int errors = 0;
  74   int optc;
  75
  76   program_name = argv[0];
  77   path_mode = 0;
  78
  79   while ((optc = getopt_long (argc, argv, "pm:", longopts, (int *) 0)) != EOF)
  80     {
  81       switch (optc)
  82         {
  83         case 0:                 /* Long option. */
  84           break;
  85         case 'p':
  86           path_mode = 1;
  87           break;
  88         case 'm':
  89           symbolic_mode = optarg;
  90           break;
  91         default:
  92           usage (1);
  93         }
  94     }
  95
  96   if (show_version)
  97     {
  98       printf ("mkdir - %s\n", version_string);
  99       exit (0);
 100     }
 101
 102   if (show_help)
 103     usage (0);
 104
 105   if (optind == argc)
 106     {
 107       error (0, 0, "too few arguments");
 108       usage (1);
 109     }
 110
 111   newmode = 0777 & ~umask (0);
 112   parent_mode = newmode | 0300; /* u+wx */
 113   if (symbolic_mode)
 114     {
 115       struct mode_change *change = mode_compile (symbolic_mode, 0);
 116       if (change == MODE_INVALID)
 117         error (1, 0, "invalid mode `%s'", symbolic_mode);
 118       else if (change == MODE_MEMORY_EXHAUSTED)
 119         error (1, 0, "virtual memory exhausted");
 120       newmode = mode_adjust (newmode, change);
 121     }
 122
 123   for (; optind < argc; ++optind)
 124     {
 125       if (path_mode)
 126         {
 127           errors |= make_path (argv[optind], newmode, parent_mode,
 128                                -1, -1, 1, NULL);
 129         }
 130       else if (mkdir (argv[optind], newmode))
 131         {
 132           error (0, errno, "cannot make directory `%s'", argv[optind]);
 133           errors = 1;
 134         }
 135     }
 136
 137   exit (errors);
 138 }
 139
 140 static void
 141 usage (status)
 142      int status;
 143 {
 144   if (status != 0)
 145     fprintf (stderr, "Try `%s --help' for more information.\n",
 146              program_name);
 147   else
 148     {
 149       printf ("Usage: %s [OPTION] DIRECTORY...\n", program_name);
 150       printf ("\
 151 Create the DIRECTORY(ies), if they do not already exist.\n\
 152 \n\
 153   -p, --parents     no error if existing, make parent directories as needed\n\
 154   -m, --mode=MODE   set permission mode (as in chmod), not rwxrwxrwx - umask\n\
 155       --help        display this help and exit\n\
 156       --version     output version information and exit\n");
 157     }
 158   exit (status);
 159 }
 160