src/mkdir.c

   1 /* mkdir -- make directories
   2    Copyright (C) 90, 1995-2002, 2004, 2005 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 Foundation,
  16    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  17
  18 /* David MacKenzie <djm@ai.mit.edu>  */
  19
  20 #include <config.h>
  21 #include <stdio.h>
  22 #include <getopt.h>
  23 #include <sys/types.h>
  24
  25 #include "system.h"
  26 #include "dirname.h"
  27 #include "error.h"
  28 #include "mkdir-p.h"
  29 #include "modechange.h"
  30 #include "quote.h"
  31
  32 /* The official name of this program (e.g., no `g' prefix).  */
  33 #define PROGRAM_NAME "mkdir"
  34
  35 #define AUTHORS "David MacKenzie"
  36
  37 /* The name this program was run with. */
  38 char *program_name;
  39
  40 static struct option const longopts[] =
  41 {
  42   {"mode", required_argument, NULL, 'm'},
  43   {"parents", no_argument, NULL, 'p'},
  44   {"verbose", no_argument, NULL, 'v'},
  45   {GETOPT_HELP_OPTION_DECL},
  46   {GETOPT_VERSION_OPTION_DECL},
  47   {NULL, 0, NULL, 0}
  48 };
  49
  50 void
  51 usage (int status)
  52 {
  53   if (status != EXIT_SUCCESS)
  54     fprintf (stderr, _("Try `%s --help' for more information.\n"),
  55              program_name);
  56   else
  57     {
  58       printf (_("Usage: %s [OPTION] DIRECTORY...\n"), program_name);
  59       fputs (_("\
  60 Create the DIRECTORY(ies), if they do not already exist.\n\
  61 \n\
  62 "), stdout);
  63       fputs (_("\
  64 Mandatory arguments to long options are mandatory for short options too.\n\
  65 "), stdout);
  66       fputs (_("\
  67   -m, --mode=MODE   set permission mode (as in chmod), not rwxrwxrwx - umask\n\
  68   -p, --parents     no error if existing, make parent directories as needed\n\
  69   -v, --verbose     print a message for each created directory\n\
  70 "), stdout);
  71       fputs (HELP_OPTION_DESCRIPTION, stdout);
  72       fputs (VERSION_OPTION_DESCRIPTION, stdout);
  73       printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
  74     }
  75   exit (status);
  76 }
  77
  78 int
  79 main (int argc, char **argv)
  80 {
  81   mode_t newmode;
  82   mode_t parent_mode IF_LINT (= 0);
  83   const char *specified_mode = NULL;
  84   const char *verbose_fmt_string = NULL;
  85   bool create_parents = false;
  86   int exit_status = EXIT_SUCCESS;
  87   int optc;
  88   int cwd_errno = 0;
  89
  90   initialize_main (&argc, &argv);
  91   program_name = argv[0];
  92   setlocale (LC_ALL, "");
  93   bindtextdomain (PACKAGE, LOCALEDIR);
  94   textdomain (PACKAGE);
  95
  96   atexit (close_stdout);
  97
  98   while ((optc = getopt_long (argc, argv, "pm:v", longopts, NULL)) != -1)
  99     {
 100       switch (optc)
 101         {
 102         case 'p':
 103           create_parents = true;
 104           break;
 105         case 'm':
 106           specified_mode = optarg;
 107           break;
 108         case 'v': /* --verbose  */
 109           verbose_fmt_string = _("created directory %s");
 110           break;
 111         case_GETOPT_HELP_CHAR;
 112         case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 113         default:
 114           usage (EXIT_FAILURE);
 115         }
 116     }
 117
 118   if (optind == argc)
 119     {
 120       error (0, 0, _("missing operand"));
 121       usage (EXIT_FAILURE);
 122     }
 123
 124   newmode = S_IRWXUGO;
 125
 126   if (specified_mode || create_parents)
 127     {
 128       mode_t umask_value = umask (0);
 129
 130       parent_mode = (S_IRWXUGO & ~umask_value) | (S_IWUSR | S_IXUSR);
 131
 132       if (specified_mode)
 133         {
 134           struct mode_change *change = mode_compile (specified_mode);
 135           if (!change)
 136             error (EXIT_FAILURE, 0, _("invalid mode %s"),
 137                    quote (specified_mode));
 138           newmode = mode_adjust (S_IRWXUGO, change, umask_value);
 139           free (change);
 140         }
 141       else
 142         umask (umask_value);
 143     }
 144
 145   for (; optind < argc; ++optind)
 146     {
 147       char *dir = argv[optind];
 148       bool ok;
 149
 150       if (create_parents)
 151         {
 152           if (cwd_errno != 0 && IS_RELATIVE_FILE_NAME (dir))
 153             {
 154               error (0, cwd_errno, _("cannot return to working directory"));
 155               ok = false;
 156             }
 157           else
 158             ok = make_dir_parents (dir, newmode, parent_mode,
 159                                    -1, -1, true, verbose_fmt_string,
 160                                    &cwd_errno);
 161         }
 162       else
 163         {
 164           ok = (mkdir (dir, newmode) == 0);
 165
 166           if (! ok)
 167             error (0, errno, _("cannot create directory %s"), quote (dir));
 168           else if (verbose_fmt_string)
 169             error (0, 0, verbose_fmt_string, quote (dir));
 170
 171           /* mkdir(2) is required to honor only the file permission bits.
 172              In particular, it needn't do anything about `special' bits,
 173              so if any were set in newmode, apply them with chmod.
 174              This extra step is necessary in some cases when the containing
 175              directory has a default ACL.  */
 176
 177           /* Set the permissions only if this directory has just
 178              been created.  */
 179
 180           if (ok && specified_mode
 181               && chmod (dir, newmode) != 0)
 182             {
 183               error (0, errno, _("cannot set permissions of directory %s"),
 184                      quote (dir));
 185               ok = false;
 186             }
 187         }
 188
 189       if (! ok)
 190         exit_status = EXIT_FAILURE;
 191     }
 192
 193   exit (exit_status);
 194 }