grub/commands/search.c
carles 40e3a41f85 2010-01-06 Carles Pina i Estany <carles@pina.cat>
* commands/search.c (GRUB_MOD_INIT): Use HELP_MESSAGE.
	* commands/search_file.c (HELP_MESSAGE): New macro.
	* commands/search_label.c (HELP_MESSAGE): Likewise.
	* commands/search_uuid.c (HELP_MESSAGE): Likewise.
	* po/POTFILES: Add `commands/search_file.c',
	`commands/search_label.c', `commands_uuid.c'. Remove duplicate
	`commands/search.c'.
2010-01-06 21:36:34 +00:00

181 lines
3.9 KiB
C

/* 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/device.h>
#include <grub/file.h>
#include <grub/env.h>
#include <grub/command.h>
#include <grub/search.h>
#include <grub/i18n.h>
void
FUNC_NAME (const char *key, const char *var, int no_floppy)
{
int count = 0;
char *buf = NULL;
grub_fs_autoload_hook_t saved_autoload;
auto int iterate_device (const char *name);
int iterate_device (const char *name)
{
int found = 0;
/* Skip floppy drives when requested. */
if (no_floppy &&
name[0] == 'f' && name[1] == 'd' && name[2] >= '0' && name[2] <= '9')
return 0;
#ifdef DO_SEARCH_FILE
{
grub_size_t len;
char *p;
grub_file_t file;
len = grub_strlen (name) + 2 + grub_strlen (key) + 1;
p = grub_realloc (buf, len);
if (! p)
return 1;
buf = p;
grub_sprintf (buf, "(%s)%s", name, key);
file = grub_file_open (buf);
if (file)
{
found = 1;
grub_file_close (file);
}
}
#else
{
/* SEARCH_FS_UUID or SEARCH_LABEL */
grub_device_t dev;
grub_fs_t fs;
char *quid;
dev = grub_device_open (name);
if (dev)
{
fs = grub_fs_probe (dev);
#ifdef DO_SEARCH_FS_UUID
#define compare_fn grub_strcasecmp
#define read_fn uuid
#else
#define compare_fn grub_strcmp
#define read_fn label
#endif
if (fs && fs->read_fn)
{
fs->read_fn (dev, &quid);
if (grub_errno == GRUB_ERR_NONE && quid)
{
if (compare_fn (quid, key) == 0)
found = 1;
grub_free (quid);
}
}
grub_device_close (dev);
}
}
#endif
if (found)
{
count++;
if (var)
grub_env_set (var, name);
else
grub_printf (" %s", name);
}
grub_errno = GRUB_ERR_NONE;
return (found && var);
}
/* First try without autoloading if we're setting variable. */
if (var)
{
saved_autoload = grub_fs_autoload_hook;
grub_fs_autoload_hook = 0;
grub_device_iterate (iterate_device);
/* Restore autoload hook. */
grub_fs_autoload_hook = saved_autoload;
/* Retry with autoload if nothing found. */
if (grub_errno == GRUB_ERR_NONE && count == 0)
grub_device_iterate (iterate_device);
}
else
grub_device_iterate (iterate_device);
grub_free (buf);
if (grub_errno == GRUB_ERR_NONE && count == 0)
grub_error (GRUB_ERR_FILE_NOT_FOUND, "no such device: %s", key);
}
static grub_err_t
grub_cmd_do_search (grub_command_t cmd __attribute__ ((unused)), int argc,
char **args)
{
if (argc == 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT, "no argument specified");
FUNC_NAME (args[0], argc == 1 ? 0 : args[1], 0);
return grub_errno;
}
static grub_command_t cmd;
#ifdef DO_SEARCH_FILE
GRUB_MOD_INIT(search_file)
#elif defined (DO_SEARCH_FS_UUID)
GRUB_MOD_INIT(search_fs_uuid)
#else
GRUB_MOD_INIT(search_fs_label)
#endif
{
cmd =
grub_register_command (COMMAND_NAME, grub_cmd_do_search,
N_("NAME [VARIABLE]"),
HELP_MESSAGE);
}
#ifdef DO_SEARCH_FILE
GRUB_MOD_FINI(search_file)
#elif defined (DO_SEARCH_FS_UUID)
GRUB_MOD_FINI(search_fs_uuid)
#else
GRUB_MOD_FINI(search_fs_label)
#endif
{
grub_unregister_command (cmd);
}