grub/util/grub-probe.c
robertmh 0c68c93e62 2007-06-04 Robert Millan <rmh@aybabtu.com>
* conf/powerpc-ieee1275.rmk: Enable grub-mkdevicemap and grub-probe.

	* include/grub/partition.h: Declare grub_apple_partition_map_init and
	grub_apple_partition_map_fini.

	* util/biosdisk.c
	(grub_util_biosdisk_open): Replace BLKGETSIZE with BLKGETSIZE64 (needed
	to access >2 TiB disks).

	Print disk->total_sectors with %llu instead of %lu, since this
	variable is always 64-bit (prevents wrong disk size from being displayed
	on either >2 TiB disk or big-endian CPU).

	(grub_util_biosdisk_get_grub_dev): Convert gpt_partition_map handling
	into a generic case that supports all (sane) partition maps.

	Stop using grub_cpu_to_le32() on dos_part / bsd_part since it actually
	breaks big-endian.

	* util/grub-probe.c: Call grub_apple_partition_map_init() before probe()
	and grub_apple_partition_map_fini() after that.
2007-06-04 18:58:17 +00:00

297 lines
6.5 KiB
C

/* grub-probe.c - probe device information for a given path */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2005,2006,2007 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 2 of the License, or
* (at your option) any later version.
*
* This program 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <config.h>
#include <grub/types.h>
#include <grub/util/misc.h>
#include <grub/device.h>
#include <grub/disk.h>
#include <grub/fs.h>
#include <grub/partition.h>
#include <grub/pc_partition.h>
#include <grub/util/biosdisk.h>
#include <grub/util/getroot.h>
#include <grub/term.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#define _GNU_SOURCE 1
#include <getopt.h>
#ifdef __NetBSD__
/* NetBSD uses /boot for its boot block. */
# define DEFAULT_DIRECTORY "/grub"
#else
# define DEFAULT_DIRECTORY "/boot/grub"
#endif
#define DEFAULT_DEVICE_MAP DEFAULT_DIRECTORY "/device.map"
#define PRINT_FS 0
#define PRINT_DRIVE 1
#define PRINT_DEVICE 2
#define PRINT_PARTMAP 3
int print = PRINT_FS;
void
grub_putchar (int c)
{
putchar (c);
}
int
grub_getkey (void)
{
return -1;
}
grub_term_t
grub_term_get_current (void)
{
return 0;
}
void
grub_refresh (void)
{
}
static void
probe (const char *path)
{
char *device_name;
char *drive_name = 0;
grub_device_t dev;
grub_fs_t fs;
device_name = grub_guess_root_device (path);
if (! device_name)
{
fprintf (stderr, "cannot find a device for %s.\n", path);
goto end;
}
if (print == PRINT_DEVICE)
{
printf ("%s\n", device_name);
goto end;
}
drive_name = grub_util_get_grub_dev (device_name);
if (! drive_name)
{
fprintf (stderr, "cannot find a GRUB drive for %s.\n", device_name);
goto end;
}
if (print == PRINT_DRIVE)
{
printf ("(%s)\n", drive_name);
goto end;
}
grub_util_info ("opening %s", drive_name);
dev = grub_device_open (drive_name);
if (! dev)
grub_util_error ("%s", grub_errmsg);
if (print == PRINT_PARTMAP)
{
if (dev->disk->partition == NULL)
grub_util_error ("Cannot detect partition map for %s", drive_name);
if (strcmp (dev->disk->partition->partmap->name, "amiga_partition_map") == 0)
printf ("amiga\n");
else if (strcmp (dev->disk->partition->partmap->name, "apple_partition_map") == 0)
printf ("apple\n");
else if (strcmp (dev->disk->partition->partmap->name, "gpt_partition_map") == 0)
printf ("gpt\n");
else if (strcmp (dev->disk->partition->partmap->name, "pc_partition_map") == 0)
printf ("pc\n");
else if (strcmp (dev->disk->partition->partmap->name, "sun_partition_map") == 0)
printf ("sun\n");
else
grub_util_error ("Unknown partition map %s", dev->disk->partition->partmap->name);
goto end;
}
fs = grub_fs_probe (dev);
if (! fs)
grub_util_error ("%s", grub_errmsg);
printf ("%s\n", fs->name);
grub_device_close (dev);
end:
free (device_name);
free (drive_name);
}
static struct option options[] =
{
{"device-map", required_argument, 0, 'm'},
{"target", required_argument, 0, 't'},
{"help", no_argument, 0, 'h'},
{"version", no_argument, 0, 'V'},
{"verbose", no_argument, 0, 'v'},
{0, 0, 0, 0}
};
static void
usage (int status)
{
if (status)
fprintf (stderr,
"Try ``grub-probe --help'' for more information.\n");
else
printf ("\
Usage: grub-probe [OPTION]... PATH\n\
\n\
Probe device information for a given path.\n\
\n\
-m, --device-map=FILE use FILE as the device map [default=%s]\n\
-t, --target=(fs|drive|device|partmap)\n\
print filesystem module, GRUB drive, system device or partition map module [default=fs]\n\
-h, --help display this message and exit\n\
-V, --version print version information and exit\n\
-v, --verbose print verbose messages\n\
\n\
Report bugs to <%s>.\n\
",
DEFAULT_DEVICE_MAP, PACKAGE_BUGREPORT);
exit (status);
}
int
main (int argc, char *argv[])
{
char *dev_map = 0;
char *path;
progname = "grub-probe";
/* Check for options. */
while (1)
{
int c = getopt_long (argc, argv, "m:t:hVv", options, 0);
if (c == -1)
break;
else
switch (c)
{
case 'm':
if (dev_map)
free (dev_map);
dev_map = xstrdup (optarg);
break;
case 't':
if (!strcmp (optarg, "fs"))
print = PRINT_FS;
else if (!strcmp (optarg, "drive"))
print = PRINT_DRIVE;
else if (!strcmp (optarg, "device"))
print = PRINT_DEVICE;
else if (!strcmp (optarg, "partmap"))
print = PRINT_PARTMAP;
else
usage (1);
break;
case 'h':
usage (0);
break;
case 'V':
printf ("%s (%s) %s\n", progname, PACKAGE_NAME, PACKAGE_VERSION);
return 0;
case 'v':
verbosity++;
break;
default:
usage (1);
break;
}
}
/* Obtain PATH. */
if (optind >= argc)
{
fprintf (stderr, "No path is specified.\n");
usage (1);
}
if (optind + 1 != argc)
{
fprintf (stderr, "Unknown extra argument `%s'.\n", argv[optind + 1]);
usage (1);
}
path = argv[optind];
/* Initialize the emulated biosdisk driver. */
grub_util_biosdisk_init (dev_map ? : DEFAULT_DEVICE_MAP);
grub_pc_partition_map_init ();
grub_gpt_partition_map_init ();
grub_apple_partition_map_init ();
grub_raid_init ();
grub_lvm_init ();
/* Initialize filesystems. */
grub_fat_init ();
grub_ext2_init ();
grub_ufs_init ();
grub_minix_init ();
grub_jfs_init ();
grub_xfs_init ();
/* Do it. */
probe (path);
/* Free resources. */
grub_ext2_fini ();
grub_fat_fini ();
grub_ufs_fini ();
grub_minix_fini ();
grub_jfs_fini ();
grub_xfs_fini ();
grub_lvm_fini ();
grub_raid_fini ();
grub_gpt_partition_map_fini ();
grub_apple_partition_map_fini ();
grub_pc_partition_map_fini ();
grub_util_biosdisk_fini ();
free (dev_map);
return 0;
}