commands/search_wrap.c

   1 /* search.c - search devices based on a file or a filesystem label */
   2 /*
   3  *  GRUB  --  GRand Unified Bootloader
   4  *  Copyright (C) 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/env.h>
  26 #include <grub/extcmd.h>
  27 #include <grub/search.h>
  28 #include <grub/i18n.h>
  29
  30 static const struct grub_arg_option options[] =
  31   {
  32     {"file",            'f', 0, N_("Search devices by a file."), 0, 0},
  33     {"label",           'l', 0, N_("Search devices by a filesystem label."),
  34      0, 0},
  35     {"fs-uuid",         'u', 0, N_("Search devices by a filesystem UUID."),
  36      0, 0},
  37     {"set",             's', GRUB_ARG_OPTION_OPTIONAL,
  38      N_("Set a variable to the first device found."), "VAR", ARG_TYPE_STRING},
  39     {"no-floppy",       'n', 0, N_("Do not probe any floppy drive."), 0, 0},
  40     {0, 0, 0, 0, 0, 0}
  41   };
  42
  43 enum options
  44   {
  45     SEARCH_FILE,
  46     SEARCH_LABEL,
  47     SEARCH_FS_UUID,
  48     SEARCH_SET,
  49     SEARCH_NO_FLOPPY,
  50  };
  51
  52 static grub_err_t
  53 grub_cmd_search (grub_extcmd_t cmd, int argc, char **args)
  54 {
  55   struct grub_arg_list *state = cmd->state;
  56   const char *var = 0;
  57
  58   if (argc == 0)
  59     return grub_error (GRUB_ERR_BAD_ARGUMENT, "no argument specified");
  60
  61   if (state[SEARCH_SET].set)
  62     var = state[SEARCH_SET].arg ? state[SEARCH_SET].arg : "root";
  63
  64   if (state[SEARCH_LABEL].set)
  65     grub_search_label (args[0], var, state[SEARCH_NO_FLOPPY].set);
  66   else if (state[SEARCH_FS_UUID].set)
  67     grub_search_fs_uuid (args[0], var, state[SEARCH_NO_FLOPPY].set);
  68   else if (state[SEARCH_FILE].set)
  69     grub_search_fs_file (args[0], var, state[SEARCH_NO_FLOPPY].set);
  70   else
  71     return grub_error (GRUB_ERR_INVALID_COMMAND, "unspecified search type");
  72
  73   return grub_errno;
  74 }
  75
  76 static grub_extcmd_t cmd;
  77
  78 GRUB_MOD_INIT(search)
  79 {
  80   cmd =
  81     grub_register_extcmd ("search", grub_cmd_search,
  82                           GRUB_COMMAND_FLAG_BOTH,
  83                           N_("search [-f|-l|-u|-s|-n] NAME"),
  84                           N_("Search devices by file, filesystem label"
  85                              " or filesystem UUID."
  86                              " If --set is specified, the first device found is"
  87                              " set to a variable. If no variable name is"
  88                              " specified, \"root\" is used."),
  89                           options);
  90 }
  91
  92 GRUB_MOD_FINI(search)
  93 {
  94   grub_unregister_extcmd (cmd);
  95 }