src/mkdir.c

   1 /* mkdir -- make directories
   2    Copyright (C) 90, 1995-2002, 2004 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 "makepath.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 /* If true, ensure that all parents of the specified directory exist.  */
  41 static bool create_parents;
  42
  43 static struct option const longopts[] =
  44 {
  45   {"mode", required_argument, NULL, 'm'},
  46   {"parents", no_argument, NULL, 'p'},
  47   {"verbose", no_argument, NULL, 'v'},
  48   {GETOPT_HELP_OPTION_DECL},
  49   {GETOPT_VERSION_OPTION_DECL},
  50   {NULL, 0, NULL, 0}
  51 };
  52
  53 void
  54 usage (int status)
  55 {
  56   if (status != EXIT_SUCCESS)
  57     fprintf (stderr, _("Try `%s --help' for more information.\n"),
  58              program_name);
  59   else
  60     {
  61       printf (_("Usage: %s [OPTION] DIRECTORY...\n"), program_name);
  62       fputs (_("\
  63 Create the DIRECTORY(ies), if they do not already exist.\n\
  64 \n\
  65 "), stdout);
  66       fputs (_("\
  67 Mandatory arguments to long options are mandatory for short options too.\n\
  68 "), stdout);
  69       fputs (_("\
  70   -m, --mode=MODE   set permission mode (as in chmod), not rwxrwxrwx - umask\n\
  71   -p, --parents     no error if existing, make parent directories as needed\n\
  72   -v, --verbose     print a message for each created directory\n\
  73 "), stdout);
  74       fputs (HELP_OPTION_DESCRIPTION, stdout);
  75       fputs (VERSION_OPTION_DESCRIPTION, stdout);
  76       printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
  77     }
  78   exit (status);
  79 }
  80
  81 int
  82 main (int argc, char **argv)
  83 {
  84   mode_t newmode;
  85   mode_t parent_mode;
  86   const char *specified_mode = NULL;
  87   const char *verbose_fmt_string = NULL;
  88   int exit_status = EXIT_SUCCESS;
  89   int optc;
  90
  91   initialize_main (&argc, &argv);
  92   program_name = argv[0];
  93   setlocale (LC_ALL, "");
  94   bindtextdomain (PACKAGE, LOCALEDIR);
  95   textdomain (PACKAGE);
  96
  97   atexit (close_stdout);
  98
  99   create_parents = false;
 100
 101   while ((optc = getopt_long (argc, argv, "pm:v", longopts, NULL)) != -1)
 102     {
 103       switch (optc)
 104         {
 105         case 'p':
 106           create_parents = true;
 107           break;
 108         case 'm':
 109           specified_mode = optarg;
 110           break;
 111         case 'v': /* --verbose  */
 112           verbose_fmt_string = _("created directory %s");
 113           break;
 114         case_GETOPT_HELP_CHAR;
 115         case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 116         default:
 117           usage (EXIT_FAILURE);
 118         }
 119     }
 120
 121   if (optind == argc)
 122     {
 123       error (0, 0, _("missing operand"));
 124       usage (EXIT_FAILURE);
 125     }
 126
 127   newmode = S_IRWXUGO;
 128   {
 129     mode_t umask_value = umask (0);
 130     umask (umask_value);                /* Restore the old value. */
 131     parent_mode = (newmode & (~ umask_value)) | S_IWUSR | S_IXUSR;
 132   }
 133
 134   if (specified_mode)
 135     {
 136       struct mode_change *change = mode_compile (specified_mode, 0);
 137       newmode &= ~ umask (0);
 138       if (change == MODE_INVALID)
 139         error (EXIT_FAILURE, 0, _("invalid mode %s"), quote (specified_mode));
 140       else if (change == MODE_MEMORY_EXHAUSTED)
 141         xalloc_die ();
 142       newmode = mode_adjust (newmode, change);
 143     }
 144
 145   for (; optind < argc; ++optind)
 146     {
 147       bool ok;
 148
 149       if (create_parents)
 150         {
 151           char *dir = argv[optind];
 152           ok = make_path (dir, newmode, parent_mode,
 153                           -1, -1, true, verbose_fmt_string);
 154         }
 155       else
 156         {
 157           const char *dir = argv[optind];
 158           bool dir_created;
 159           ok = make_dir (dir, dir, newmode, &dir_created);
 160           if (! ok)
 161             {
 162               /* make_dir already gave a diagnostic.  */
 163             }
 164           else if (!create_parents && !dir_created)
 165             {
 166               /* make_dir `succeeds' when DIR already exists.
 167                  In that case, mkdir must fail, unless --parents (-p)
 168                  was specified.  */
 169               error (0, EEXIST, _("cannot create directory %s"),
 170                      quote (dir));
 171               ok = false;
 172             }
 173           else if (verbose_fmt_string)
 174             error (0, 0, verbose_fmt_string, quote (dir));
 175
 176           /* mkdir(2) is required to honor only the file permission bits.
 177              In particular, it needn't do anything about `special' bits,
 178              so if any were set in newmode, apply them with chmod.
 179              This extra step is necessary in some cases when the containing
 180              directory has a default ACL.  */
 181
 182           /* Set the permissions only if this directory has just
 183              been created.  */
 184
 185           if (ok && specified_mode && dir_created
 186               && chmod (dir, newmode) != 0)
 187             {
 188               error (0, errno, _("cannot set permissions of directory %s"),
 189                      quote (dir));
 190               ok = false;
 191             }
 192         }
 193
 194       if (! ok)
 195         exit_status = EXIT_FAILURE;
 196     }
 197
 198   exit (exit_status);
 199 }