arch/all-pc/boot/grub2-aros/grub-core/commands/ls.c

   1 /* ls.c - command to list files and devices */
   2 /*
   3  *  GRUB  --  GRand Unified Bootloader
   4  *  Copyright (C) 2003,2005,2007,2008,2009  Free Software Foundation, Inc.
   5  *
   6  *  GRUB is free software: you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation, either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  GRUB is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <grub/types.h>
  21 #include <grub/misc.h>
  22 #include <grub/mm.h>
  23 #include <grub/err.h>
  24 #include <grub/dl.h>
  25 #include <grub/disk.h>
  26 #include <grub/device.h>
  27 #include <grub/term.h>
  28 #include <grub/partition.h>
  29 #include <grub/file.h>
  30 #include <grub/normal.h>
  31 #include <grub/extcmd.h>
  32 #include <grub/datetime.h>
  33 #include <grub/i18n.h>
  34 #include <grub/net.h>
  35
  36 GRUB_MOD_LICENSE ("GPLv3+");
  37
  38 static const struct grub_arg_option options[] =
  39   {
  40     {"long", 'l', 0, N_("Show a long list with more detailed information."), 0, 0},
  41     {"human-readable", 'h', 0, N_("Print sizes in a human readable format."), 0, 0},
  42     {"all", 'a', 0, N_("List all files."), 0, 0},
  43     {0, 0, 0, 0, 0, 0}
  44   };
  45
  46 static const char grub_human_sizes[] = {' ', 'K', 'M', 'G', 'T'};
  47
  48 static grub_err_t
  49 grub_ls_list_devices (int longlist)
  50 {
  51   auto int grub_ls_print_devices (const char *name);
  52   int grub_ls_print_devices (const char *name)
  53     {
  54       if (longlist)
  55         grub_normal_print_device_info (name);
  56       else
  57         grub_printf ("(%s) ", name);
  58
  59       return 0;
  60     }
  61
  62   grub_device_iterate (grub_ls_print_devices);
  63   grub_xputs ("\n");
  64
  65 #if 0
  66   {
  67     grub_net_app_level_t proto;
  68     int first = 1;
  69     FOR_NET_APP_LEVEL (proto)
  70     {
  71       if (first)
  72         grub_puts_ (N_ ("Network protocols:"));
  73       first = 0;
  74       grub_printf ("%s ", proto->name);
  75     }
  76     grub_xputs ("\n");
  77   }
  78 #endif
  79
  80   grub_refresh ();
  81
  82   return 0;
  83 }
  84
  85 static grub_err_t
  86 grub_ls_list_files (char *dirname, int longlist, int all, int human)
  87 {
  88   char *device_name;
  89   grub_fs_t fs;
  90   const char *path;
  91   grub_device_t dev;
  92
  93   auto int print_files (const char *filename,
  94                         const struct grub_dirhook_info *info);
  95   auto int print_files_long (const char *filename,
  96                              const struct grub_dirhook_info *info);
  97
  98   int print_files (const char *filename, const struct grub_dirhook_info *info)
  99     {
 100       if (all || filename[0] != '.')
 101         grub_printf ("%s%s ", filename, info->dir ? "/" : "");
 102
 103       return 0;
 104     }
 105
 106   int print_files_long (const char *filename,
 107                         const struct grub_dirhook_info *info)
 108     {
 109       if ((! all) && (filename[0] == '.'))
 110         return 0;
 111
 112       if (! info->dir)
 113         {
 114           grub_file_t file;
 115           char *pathname;
 116
 117           if (dirname[grub_strlen (dirname) - 1] == '/')
 118             pathname = grub_xasprintf ("%s%s", dirname, filename);
 119           else
 120             pathname = grub_xasprintf ("%s/%s", dirname, filename);
 121
 122           if (!pathname)
 123             return 1;
 124
 125           /* XXX: For ext2fs symlinks are detected as files while they
 126              should be reported as directories.  */
 127           grub_file_filter_disable_compression ();
 128           file = grub_file_open (pathname);
 129           if (! file)
 130             {
 131               grub_errno = 0;
 132               grub_free (pathname);
 133               return 0;
 134             }
 135
 136           if (! human)
 137             grub_printf ("%-12llu", (unsigned long long) file->size);
 138           else
 139             {
 140               grub_uint64_t fsize = file->size * 100ULL;
 141               grub_uint64_t fsz = file->size;
 142               int units = 0;
 143               char buf[20];
 144
 145               while (fsz / 1024)
 146                 {
 147                   fsize = (fsize + 512) / 1024;
 148                   fsz /= 1024;
 149                   units++;
 150                 }
 151
 152               if (units)
 153                 {
 154                   grub_uint64_t whole, fraction;
 155
 156                   whole = grub_divmod64 (fsize, 100, &fraction);
 157                   grub_snprintf (buf, sizeof (buf),
 158                                  "%" PRIuGRUB_UINT64_T
 159                                  ".%02" PRIuGRUB_UINT64_T "%c", whole, fraction,
 160                                  grub_human_sizes[units]);
 161                   grub_printf ("%-12s", buf);
 162                 }
 163               else
 164                 grub_printf ("%-12llu", (unsigned long long) file->size);
 165
 166             }
 167           grub_file_close (file);
 168           grub_free (pathname);
 169         }
 170       else
 171         grub_printf ("%-12s", _("DIR"));
 172
 173       if (info->mtimeset)
 174         {
 175           struct grub_datetime datetime;
 176           grub_unixtime2datetime (info->mtime, &datetime);
 177           if (human)
 178             grub_printf (" %d-%02d-%02d %02d:%02d:%02d %-11s ",
 179                          datetime.year, datetime.month, datetime.day,
 180                          datetime.hour, datetime.minute,
 181                          datetime.second,
 182                          grub_get_weekday_name (&datetime));
 183           else
 184             grub_printf (" %04d%02d%02d%02d%02d%02d ",
 185                          datetime.year, datetime.month,
 186                          datetime.day, datetime.hour,
 187                          datetime.minute, datetime.second);
 188         }
 189       grub_printf ("%s%s\n", filename, info->dir ? "/" : "");
 190
 191       return 0;
 192     }
 193
 194   device_name = grub_file_get_device_name (dirname);
 195   dev = grub_device_open (device_name);
 196   if (! dev)
 197     goto fail;
 198
 199   fs = grub_fs_probe (dev);
 200   path = grub_strchr (dirname, ')');
 201   if (! path)
 202     path = dirname;
 203   else
 204     path++;
 205
 206   if (! path && ! device_name)
 207     {
 208       grub_error (GRUB_ERR_BAD_ARGUMENT, "invalid argument");
 209       goto fail;
 210     }
 211
 212   if (! *path)
 213     {
 214       if (grub_errno == GRUB_ERR_UNKNOWN_FS)
 215         grub_errno = GRUB_ERR_NONE;
 216
 217       grub_normal_print_device_info (device_name);
 218     }
 219   else if (fs)
 220     {
 221       if (longlist)
 222         (fs->dir) (dev, path, print_files_long);
 223       else
 224         (fs->dir) (dev, path, print_files);
 225
 226       if (grub_errno == GRUB_ERR_BAD_FILE_TYPE
 227           && path[grub_strlen (path) - 1] != '/')
 228         {
 229           /* PATH might be a regular file.  */
 230           char *p;
 231           grub_file_t file;
 232           struct grub_dirhook_info info;
 233           grub_errno = 0;
 234
 235           grub_file_filter_disable_compression ();
 236           file = grub_file_open (dirname);
 237           if (! file)
 238             goto fail;
 239
 240           grub_file_close (file);
 241
 242           p = grub_strrchr (dirname, '/') + 1;
 243           dirname = grub_strndup (dirname, p - dirname);
 244           if (! dirname)
 245             goto fail;
 246
 247           all = 1;
 248           grub_memset (&info, 0, sizeof (info));
 249           if (longlist)
 250             print_files_long (p, &info);
 251           else
 252             print_files (p, &info);
 253
 254           grub_free (dirname);
 255         }
 256
 257       if (grub_errno == GRUB_ERR_NONE)
 258         grub_xputs ("\n");
 259
 260       grub_refresh ();
 261     }
 262
 263  fail:
 264   if (dev)
 265     grub_device_close (dev);
 266
 267   grub_free (device_name);
 268
 269   return 0;
 270 }
 271
 272 static grub_err_t
 273 grub_cmd_ls (grub_extcmd_context_t ctxt, int argc, char **args)
 274 {
 275   struct grub_arg_list *state = ctxt->state;
 276   int i;
 277
 278   if (argc == 0)
 279     grub_ls_list_devices (state[0].set);
 280   else
 281     for (i = 0; i < argc; i++)
 282       grub_ls_list_files (args[i], state[0].set, state[2].set,
 283                           state[1].set);
 284
 285   return 0;
 286 }
 287
 288 static grub_extcmd_t cmd;
 289
 290 GRUB_MOD_INIT(ls)
 291 {
 292   cmd = grub_register_extcmd ("ls", grub_cmd_ls, 0,
 293                               N_("[-l|-h|-a] [FILE ...]"),
 294                               N_("List devices and files."), options);
 295 }
 296
 297 GRUB_MOD_FINI(ls)
 298 {
 299   grub_unregister_extcmd (cmd);
 300 }