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 /* Helper for grub_ls_list_devices.  */
  47 static int
  48 grub_ls_print_devices (const char *name, void *data)
  49 {
  50   int *longlist = data;
  51
  52   if (*longlist)
  53     grub_normal_print_device_info (name);
  54   else
  55     grub_printf ("(%s) ", name);
  56
  57   return 0;
  58 }
  59
  60 static grub_err_t
  61 grub_ls_list_devices (int longlist)
  62 {
  63   grub_device_iterate (grub_ls_print_devices, &longlist);
  64   grub_xputs ("\n");
  65
  66 #if 0
  67   {
  68     grub_net_app_level_t proto;
  69     int first = 1;
  70     FOR_NET_APP_LEVEL (proto)
  71     {
  72       if (first)
  73         grub_puts_ (N_ ("Network protocols:"));
  74       first = 0;
  75       grub_printf ("%s ", proto->name);
  76     }
  77     grub_xputs ("\n");
  78   }
  79 #endif
  80
  81   grub_refresh ();
  82
  83   return 0;
  84 }
  85
  86 /* Context for grub_ls_list_files.  */
  87 struct grub_ls_list_files_ctx
  88 {
  89   char *dirname;
  90   int all;
  91   int human;
  92 };
  93
  94 /* Helper for grub_ls_list_files.  */
  95 static int
  96 print_files (const char *filename, const struct grub_dirhook_info *info,
  97              void *data)
  98 {
  99   struct grub_ls_list_files_ctx *ctx = data;
 100
 101   if (ctx->all || filename[0] != '.')
 102     grub_printf ("%s%s ", filename, info->dir ? "/" : "");
 103
 104   return 0;
 105 }
 106
 107 /* Helper for grub_ls_list_files.  */
 108 static int
 109 print_files_long (const char *filename, const struct grub_dirhook_info *info,
 110                   void *data)
 111 {
 112   struct grub_ls_list_files_ctx *ctx = data;
 113
 114   if ((! ctx->all) && (filename[0] == '.'))
 115     return 0;
 116
 117   if (! info->dir)
 118     {
 119       grub_file_t file;
 120       char *pathname;
 121
 122       if (ctx->dirname[grub_strlen (ctx->dirname) - 1] == '/')
 123         pathname = grub_xasprintf ("%s%s", ctx->dirname, filename);
 124       else
 125         pathname = grub_xasprintf ("%s/%s", ctx->dirname, filename);
 126
 127       if (!pathname)
 128         return 1;
 129
 130       /* XXX: For ext2fs symlinks are detected as files while they
 131          should be reported as directories.  */
 132       grub_file_filter_disable_compression ();
 133       file = grub_file_open (pathname);
 134       if (! file)
 135         {
 136           grub_errno = 0;
 137           grub_free (pathname);
 138           return 0;
 139         }
 140
 141       if (! ctx->human)
 142         grub_printf ("%-12llu", (unsigned long long) file->size);
 143       else
 144         grub_printf ("%-12s", grub_get_human_size (file->size,
 145                                                    GRUB_HUMAN_SIZE_SHORT));
 146       grub_file_close (file);
 147       grub_free (pathname);
 148     }
 149   else
 150     grub_printf ("%-12s", _("DIR"));
 151
 152   if (info->mtimeset)
 153     {
 154       struct grub_datetime datetime;
 155       grub_unixtime2datetime (info->mtime, &datetime);
 156       if (ctx->human)
 157         grub_printf (" %d-%02d-%02d %02d:%02d:%02d %-11s ",
 158                      datetime.year, datetime.month, datetime.day,
 159                      datetime.hour, datetime.minute,
 160                      datetime.second,
 161                      grub_get_weekday_name (&datetime));
 162       else
 163         grub_printf (" %04d%02d%02d%02d%02d%02d ",
 164                      datetime.year, datetime.month,
 165                      datetime.day, datetime.hour,
 166                      datetime.minute, datetime.second);
 167     }
 168   grub_printf ("%s%s\n", filename, info->dir ? "/" : "");
 169
 170   return 0;
 171 }
 172
 173 static grub_err_t
 174 grub_ls_list_files (char *dirname, int longlist, int all, int human)
 175 {
 176   char *device_name;
 177   grub_fs_t fs;
 178   const char *path;
 179   grub_device_t dev;
 180
 181   device_name = grub_file_get_device_name (dirname);
 182   dev = grub_device_open (device_name);
 183   if (! dev)
 184     goto fail;
 185
 186   fs = grub_fs_probe (dev);
 187   path = grub_strchr (dirname, ')');
 188   if (! path)
 189     path = dirname;
 190   else
 191     path++;
 192
 193   if (! path && ! device_name)
 194     {
 195       grub_error (GRUB_ERR_BAD_ARGUMENT, "invalid argument");
 196       goto fail;
 197     }
 198
 199   if (! *path)
 200     {
 201       if (grub_errno == GRUB_ERR_UNKNOWN_FS)
 202         grub_errno = GRUB_ERR_NONE;
 203
 204       grub_normal_print_device_info (device_name);
 205     }
 206   else if (fs)
 207     {
 208       struct grub_ls_list_files_ctx ctx = {
 209         .dirname = dirname,
 210         .all = all,
 211         .human = human
 212       };
 213
 214       if (longlist)
 215         (fs->dir) (dev, path, print_files_long, &ctx);
 216       else
 217         (fs->dir) (dev, path, print_files, &ctx);
 218
 219       if (grub_errno == GRUB_ERR_BAD_FILE_TYPE
 220           && path[grub_strlen (path) - 1] != '/')
 221         {
 222           /* PATH might be a regular file.  */
 223           char *p;
 224           grub_file_t file;
 225           struct grub_dirhook_info info;
 226           grub_errno = 0;
 227
 228           grub_file_filter_disable_compression ();
 229           file = grub_file_open (dirname);
 230           if (! file)
 231             goto fail;
 232
 233           grub_file_close (file);
 234
 235           p = grub_strrchr (dirname, '/') + 1;
 236           dirname = grub_strndup (dirname, p - dirname);
 237           if (! dirname)
 238             goto fail;
 239
 240           all = 1;
 241           grub_memset (&info, 0, sizeof (info));
 242           if (longlist)
 243             print_files_long (p, &info, &ctx);
 244           else
 245             print_files (p, &info, &ctx);
 246
 247           grub_free (dirname);
 248         }
 249
 250       if (grub_errno == GRUB_ERR_NONE)
 251         grub_xputs ("\n");
 252
 253       grub_refresh ();
 254     }
 255
 256  fail:
 257   if (dev)
 258     grub_device_close (dev);
 259
 260   grub_free (device_name);
 261
 262   return 0;
 263 }
 264
 265 static grub_err_t
 266 grub_cmd_ls (grub_extcmd_context_t ctxt, int argc, char **args)
 267 {
 268   struct grub_arg_list *state = ctxt->state;
 269   int i;
 270
 271   if (argc == 0)
 272     grub_ls_list_devices (state[0].set);
 273   else
 274     for (i = 0; i < argc; i++)
 275       grub_ls_list_files (args[i], state[0].set, state[2].set,
 276                           state[1].set);
 277
 278   return 0;
 279 }
 280
 281 static grub_extcmd_t cmd;
 282
 283 GRUB_MOD_INIT(ls)
 284 {
 285   cmd = grub_register_extcmd ("ls", grub_cmd_ls, 0,
 286                               N_("[-l|-h|-a] [FILE ...]"),
 287                               N_("List devices and files."), options);
 288 }
 289
 290 GRUB_MOD_FINI(ls)
 291 {
 292   grub_unregister_extcmd (cmd);
 293 }