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