220 lines
6.5 KiB
C
220 lines
6.5 KiB
C
/* search.c - search devices based on a file or a filesystem label */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2005,2007,2008,2009 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/types.h>
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#include <grub/misc.h>
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#include <grub/mm.h>
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#include <grub/err.h>
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#include <grub/dl.h>
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#include <grub/env.h>
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#include <grub/extcmd.h>
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#include <grub/search.h>
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#include <grub/i18n.h>
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GRUB_MOD_LICENSE ("GPLv3+");
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static const struct grub_arg_option options[] =
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{
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{"file", 'f', 0, N_("Search devices by a file."), 0, 0},
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{"label", 'l', 0, N_("Search devices by a filesystem label."),
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0, 0},
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{"fs-uuid", 'u', 0, N_("Search devices by a filesystem UUID."),
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0, 0},
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{"set", 's', GRUB_ARG_OPTION_OPTIONAL,
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N_("Set a variable to the first device found."), N_("VARNAME"),
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ARG_TYPE_STRING},
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{"no-floppy", 'n', 0, N_("Do not probe any floppy drive."), 0, 0},
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{"hint", 'h', GRUB_ARG_OPTION_REPEATABLE,
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N_("First try the device HINT. If HINT ends in comma, "
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"also try subpartitions"), N_("HINT"), ARG_TYPE_STRING},
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{"hint-ieee1275", 0, GRUB_ARG_OPTION_REPEATABLE,
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N_("First try the device HINT if currently running on IEEE1275. "
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"If HINT ends in comma, also try subpartitions"),
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N_("HINT"), ARG_TYPE_STRING},
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{"hint-bios", 0, GRUB_ARG_OPTION_REPEATABLE,
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N_("First try the device HINT if currently running on BIOS. "
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"If HINT ends in comma, also try subpartitions"),
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N_("HINT"), ARG_TYPE_STRING},
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{"hint-baremetal", 0, GRUB_ARG_OPTION_REPEATABLE,
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N_("First try the device HINT if direct hardware access is supported. "
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"If HINT ends in comma, also try subpartitions"),
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N_("HINT"), ARG_TYPE_STRING},
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{"hint-efi", 0, GRUB_ARG_OPTION_REPEATABLE,
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N_("First try the device HINT if currently running on EFI. "
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"If HINT ends in comma, also try subpartitions"),
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N_("HINT"), ARG_TYPE_STRING},
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{"hint-arc", 0, GRUB_ARG_OPTION_REPEATABLE,
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N_("First try the device HINT if currently running on ARC."
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" If HINT ends in comma, also try subpartitions"),
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N_("HINT"), ARG_TYPE_STRING},
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{0, 0, 0, 0, 0, 0}
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};
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enum options
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{
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SEARCH_FILE,
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SEARCH_LABEL,
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SEARCH_FS_UUID,
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SEARCH_SET,
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SEARCH_NO_FLOPPY,
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SEARCH_HINT,
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SEARCH_HINT_IEEE1275,
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SEARCH_HINT_BIOS,
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SEARCH_HINT_BAREMETAL,
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SEARCH_HINT_EFI,
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SEARCH_HINT_ARC,
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};
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static grub_err_t
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grub_cmd_search (grub_extcmd_context_t ctxt, int argc, char **args)
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{
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struct grub_arg_list *state = ctxt->state;
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const char *var = 0;
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const char *id = 0;
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int i = 0, j = 0, nhints = 0;
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char **hints = NULL;
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if (state[SEARCH_HINT].set)
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for (i = 0; state[SEARCH_HINT].args[i]; i++)
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nhints++;
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#ifdef GRUB_MACHINE_IEEE1275
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if (state[SEARCH_HINT_IEEE1275].set)
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for (i = 0; state[SEARCH_HINT_IEEE1275].args[i]; i++)
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nhints++;
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#endif
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#ifdef GRUB_MACHINE_EFI
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if (state[SEARCH_HINT_EFI].set)
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for (i = 0; state[SEARCH_HINT_EFI].args[i]; i++)
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nhints++;
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#endif
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#ifdef GRUB_MACHINE_PCBIOS
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if (state[SEARCH_HINT_BIOS].set)
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for (i = 0; state[SEARCH_HINT_BIOS].args[i]; i++)
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nhints++;
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#endif
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#ifdef GRUB_MACHINE_ARC
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if (state[SEARCH_HINT_ARC].set)
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for (i = 0; state[SEARCH_HINT_ARC].args[i]; i++)
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nhints++;
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#endif
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if (state[SEARCH_HINT_BAREMETAL].set)
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for (i = 0; state[SEARCH_HINT_BAREMETAL].args[i]; i++)
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nhints++;
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hints = grub_malloc (sizeof (hints[0]) * nhints);
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if (!hints)
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return grub_errno;
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j = 0;
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if (state[SEARCH_HINT].set)
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for (i = 0; state[SEARCH_HINT].args[i]; i++)
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hints[j++] = state[SEARCH_HINT].args[i];
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#ifdef GRUB_MACHINE_IEEE1275
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if (state[SEARCH_HINT_IEEE1275].set)
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for (i = 0; state[SEARCH_HINT_IEEE1275].args[i]; i++)
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hints[j++] = state[SEARCH_HINT_IEEE1275].args[i];
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#endif
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#ifdef GRUB_MACHINE_EFI
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if (state[SEARCH_HINT_EFI].set)
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for (i = 0; state[SEARCH_HINT_EFI].args[i]; i++)
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hints[j++] = state[SEARCH_HINT_EFI].args[i];
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#endif
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#ifdef GRUB_MACHINE_ARC
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if (state[SEARCH_HINT_ARC].set)
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for (i = 0; state[SEARCH_HINT_ARC].args[i]; i++)
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hints[j++] = state[SEARCH_HINT_ARC].args[i];
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#endif
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#ifdef GRUB_MACHINE_PCBIOS
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if (state[SEARCH_HINT_BIOS].set)
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for (i = 0; state[SEARCH_HINT_BIOS].args[i]; i++)
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hints[j++] = state[SEARCH_HINT_BIOS].args[i];
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#endif
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if (state[SEARCH_HINT_BAREMETAL].set)
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for (i = 0; state[SEARCH_HINT_BAREMETAL].args[i]; i++)
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hints[j++] = state[SEARCH_HINT_BAREMETAL].args[i];
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/* Skip hints for future platforms. */
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for (j = 0; j < argc; j++)
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if (grub_memcmp (args[j], "--hint-", sizeof ("--hint-") - 1) != 0)
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break;
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if (state[SEARCH_SET].set)
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var = state[SEARCH_SET].arg ? state[SEARCH_SET].arg : "root";
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if (argc != j)
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id = args[j];
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else if (state[SEARCH_SET].set && state[SEARCH_SET].arg)
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{
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id = state[SEARCH_SET].arg;
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var = "root";
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}
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else
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{
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grub_error (GRUB_ERR_BAD_ARGUMENT, N_("one argument expected"));
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goto out;
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}
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if (state[SEARCH_LABEL].set)
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grub_search_label (id, var, state[SEARCH_NO_FLOPPY].set,
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hints, nhints);
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else if (state[SEARCH_FS_UUID].set)
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grub_search_fs_uuid (id, var, state[SEARCH_NO_FLOPPY].set,
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hints, nhints);
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else if (state[SEARCH_FILE].set)
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grub_search_fs_file (id, var, state[SEARCH_NO_FLOPPY].set,
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hints, nhints);
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else
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grub_error (GRUB_ERR_INVALID_COMMAND, "unspecified search type");
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out:
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grub_free (hints);
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return grub_errno;
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}
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static grub_extcmd_t cmd;
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GRUB_MOD_INIT(search)
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{
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cmd =
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grub_register_extcmd ("search", grub_cmd_search,
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GRUB_COMMAND_FLAG_EXTRACTOR | GRUB_COMMAND_ACCEPT_DASH,
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N_("[-f|-l|-u|-s|-n] [--hint HINT [--hint HINT] ...]"
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" NAME"),
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N_("Search devices by file, filesystem label"
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" or filesystem UUID."
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" If --set is specified, the first device found is"
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" set to a variable. If no variable name is"
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" specified, `root' is used."),
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options);
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}
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GRUB_MOD_FINI(search)
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{
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grub_unregister_extcmd (cmd);
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}
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