src/mkdir.c

   1 /* mkdir -- make directories
   2    Copyright (C) 90, 1995-2001 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 nonzero, ensure that all parents of the specified directory exist.  */
  41 static int 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 != 0)
  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 errors = 0;
  89   int optc;
  90
  91   program_name = argv[0];
  92   setlocale (LC_ALL, "");
  93   bindtextdomain (PACKAGE, LOCALEDIR);
  94   textdomain (PACKAGE);
  95
  96   atexit (close_stdout);
  97
  98   create_parents = 0;
  99
 100   while ((optc = getopt_long (argc, argv, "pm:v", longopts, NULL)) != -1)
 101     {
 102       switch (optc)
 103         {
 104         case 0:                 /* Long option. */
 105           break;
 106         case 'p':
 107           create_parents = 1;
 108           break;
 109         case 'm':
 110           specified_mode = optarg;
 111           break;
 112         case 'v': /* --verbose  */
 113           verbose_fmt_string = _("created directory %s");
 114           break;
 115         case_GETOPT_HELP_CHAR;
 116         case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 117         default:
 118           usage (1);
 119         }
 120     }
 121
 122   if (optind == argc)
 123     {
 124       error (0, 0, _("too few arguments"));
 125       usage (1);
 126     }
 127
 128   newmode = S_IRWXUGO;
 129   {
 130     mode_t umask_value = umask (0);
 131     umask (umask_value);                /* Restore the old value. */
 132     parent_mode = (newmode & (~ umask_value)) | S_IWUSR | S_IXUSR;
 133   }
 134
 135   if (specified_mode)
 136     {
 137       struct mode_change *change = mode_compile (specified_mode, 0);
 138       newmode &= ~ umask (0);
 139       if (change == MODE_INVALID)
 140         error (1, 0, _("invalid mode %s"), quote (specified_mode));
 141       else if (change == MODE_MEMORY_EXHAUSTED)
 142         xalloc_die ();
 143       newmode = mode_adjust (newmode, change);
 144     }
 145
 146   for (; optind < argc; ++optind)
 147     {
 148       int fail = 0;
 149
 150       if (create_parents)
 151         {
 152           char *parents = dir_name (argv[optind]);
 153           fail = make_path (parents, parent_mode, parent_mode,
 154                             -1, -1, 1, verbose_fmt_string);
 155           free (parents);
 156         }
 157
 158       if (fail == 0)
 159         {
 160           const char *dir = argv[optind];
 161           int dir_created;
 162           fail = make_dir (dir, dir, newmode, &dir_created);
 163           if (fail)
 164             {
 165               /* make_dir already gave a diagnostic.  */
 166             }
 167           else if (!create_parents && !dir_created)
 168             {
 169               /* make_dir `succeeds' when DIR already exists.
 170                  In that case, mkdir must fail, unless --parents (-p)
 171                  was specified.  */
 172               error (0, EEXIST, _("cannot create directory %s"),
 173                      quote (dir));
 174               fail = 1;
 175             }
 176           else if (verbose_fmt_string)
 177             error (0, 0, verbose_fmt_string, quote (dir));
 178
 179           /* mkdir(2) is required to honor only the file permission bits.
 180              In particular, it needn't do anything about `special' bits,
 181              so if any were set in newmode, apply them with chmod.
 182              This extra step is necessary in some cases when the containing
 183              directory has a default ACL.  */
 184
 185           /* Set the permissions only if this directory has just
 186              been created.  */
 187
 188           if (fail == 0 && specified_mode && dir_created)
 189             {
 190               fail = chmod (dir, newmode);
 191               if (fail)
 192                 error (0, errno, _("cannot set permissions of directory %s"),
 193                        quote (dir));
 194             }
 195         }
 196
 197       if (fail)
 198         errors = 1;
 199     }
 200
 201   exit (errors);
 202 }