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grub/util/grub-probe.c
Vladimir 'phcoder' Serbinenko 17785932df merge mainline into hints
2011-12-23 18:49:00 +01:00

746 lines
16 KiB
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/* grub-probe.c - probe device information for a given path */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2005,2006,2007,2008,2009,2010 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 <config.h>
#include <grub/types.h>
#include <grub/emu/misc.h>
#include <grub/util/misc.h>
#include <grub/device.h>
#include <grub/disk.h>
#include <grub/file.h>
#include <grub/fs.h>
#include <grub/partition.h>
#include <grub/msdos_partition.h>
#include <grub/emu/hostdisk.h>
#include <grub/emu/getroot.h>
#include <grub/term.h>
#include <grub/env.h>
#include <grub/raid.h>
#include <grub/i18n.h>
#include <grub/emu/misc.h>
#include <grub/util/ofpath.h>
#include <grub/crypto.h>
#include <grub/cryptodisk.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <sys/stat.h>
#define _GNU_SOURCE 1
#include <getopt.h>
#include "progname.h"
enum {
PRINT_FS,
PRINT_FS_UUID,
PRINT_FS_LABEL,
PRINT_DRIVE,
PRINT_DEVICE,
PRINT_PARTMAP,
PRINT_ABSTRACTION,
PRINT_CRYPTODISK_UUID,
PRINT_HINT_STR,
PRINT_BIOS_HINT,
PRINT_IEEE1275_HINT,
PRINT_BAREMETAL_HINT,
PRINT_EFI_HINT,
PRINT_ARC_HINT,
PRINT_COMPATIBILITY_HINT
};
int print = PRINT_FS;
static unsigned int argument_is_device = 0;
static void
probe_partmap (grub_disk_t disk)
{
grub_partition_t part;
grub_disk_memberlist_t list = NULL, tmp;
if (disk->partition == NULL)
{
grub_util_info ("no partition map found for %s", disk->name);
}
for (part = disk->partition; part; part = part->parent)
printf ("%s ", part->partmap->name);
/* In case of LVM/RAID, check the member devices as well. */
if (disk->dev->memberlist)
{
list = disk->dev->memberlist (disk);
}
while (list)
{
probe_partmap (list->disk);
tmp = list->next;
free (list);
list = tmp;
}
}
static void
probe_cryptodisk_uuid (grub_disk_t disk)
{
grub_disk_memberlist_t list = NULL, tmp;
/* In case of LVM/RAID, check the member devices as well. */
if (disk->dev->memberlist)
{
list = disk->dev->memberlist (disk);
}
while (list)
{
probe_cryptodisk_uuid (list->disk);
tmp = list->next;
free (list);
list = tmp;
}
if (disk->dev->id == GRUB_DISK_DEVICE_CRYPTODISK_ID)
grub_util_cryptodisk_print_uuid (disk);
}
static int
probe_raid_level (grub_disk_t disk)
{
/* disk might be NULL in the case of a LVM physical volume with no LVM
signature. Ignore such cases here. */
if (!disk)
return -1;
if (disk->dev->id != GRUB_DISK_DEVICE_RAID_ID)
return -1;
return ((struct grub_raid_array *) disk->data)->level;
}
/* Since OF path names can have "," characters in them, and GRUB
internally uses "," to indicate partitions (unlike OF which uses
":" for this purpose) we escape such commas. */
static char *
escape_of_path (const char *orig_path)
{
char *new_path, *d, c;
const char *p;
if (!strchr (orig_path, ','))
return (char *) orig_path;
new_path = xmalloc (strlen (orig_path) * 2 + sizeof ("ieee1275/"));
p = orig_path;
grub_strcpy (new_path, "ieee1275/");
d = new_path + sizeof ("ieee1275/") - 1;
while ((c = *p++) != '\0')
{
if (c == ',')
*d++ = '\\';
*d++ = c;
}
free ((char *) orig_path);
return new_path;
}
static char *
guess_bios_drive (const char *orig_path)
{
char *canon;
char *ptr;
canon = canonicalize_file_name (orig_path);
if (!canon)
return NULL;
ptr = strrchr (orig_path, '/');
if (ptr)
ptr++;
else
ptr = canon;
if ((ptr[0] == 's' || ptr[0] == 'h') && ptr[1] == 'd')
{
int num = ptr[2] - 'a';
free (canon);
return xasprintf ("hd%d", num);
}
if (ptr[0] == 'f' && ptr[1] == 'd')
{
int num = atoi (ptr + 2);
free (canon);
return xasprintf ("fd%d", num);
}
free (canon);
return NULL;
}
static char *
guess_efi_drive (const char *orig_path)
{
char *canon;
char *ptr;
canon = canonicalize_file_name (orig_path);
if (!canon)
return NULL;
ptr = strrchr (orig_path, '/');
if (ptr)
ptr++;
else
ptr = canon;
if ((ptr[0] == 's' || ptr[0] == 'h') && ptr[1] == 'd')
{
int num = ptr[2] - 'a';
free (canon);
return xasprintf ("hd%d", num);
}
if (ptr[0] == 'f' && ptr[1] == 'd')
{
int num = atoi (ptr + 2);
free (canon);
return xasprintf ("fd%d", num);
}
free (canon);
return NULL;
}
static char *
guess_baremetal_drive (const char *orig_path)
{
char *canon;
char *ptr;
canon = canonicalize_file_name (orig_path);
if (!canon)
return NULL;
ptr = strrchr (orig_path, '/');
if (ptr)
ptr++;
else
ptr = canon;
if (ptr[0] == 'h' && ptr[1] == 'd')
{
int num = ptr[2] - 'a';
free (canon);
return xasprintf ("ata%d", num);
}
if (ptr[0] == 's' && ptr[1] == 'd')
{
int num = ptr[2] - 'a';
free (canon);
return xasprintf ("ahci%d", num);
}
free (canon);
return NULL;
}
static void
print_full_name (const char *drive, grub_device_t dev)
{
if (dev->disk->partition)
printf ("%s,%s", drive, grub_partition_get_name (dev->disk->partition));
else
printf ("%s", drive);
}
static void
probe_abstraction (grub_disk_t disk)
{
grub_disk_memberlist_t list = NULL, tmp;
int raid_level;
if (disk->dev->memberlist)
list = disk->dev->memberlist (disk);
while (list)
{
probe_abstraction (list->disk);
tmp = list->next;
free (list);
list = tmp;
}
if (disk->dev->id == GRUB_DISK_DEVICE_LVM_ID)
printf ("lvm ");
if (disk->dev->id == GRUB_DISK_DEVICE_CRYPTODISK_ID)
grub_util_cryptodisk_print_abstraction (disk);
raid_level = probe_raid_level (disk);
if (raid_level >= 0)
{
printf ("raid ");
if (disk->dev->raidname)
printf ("%s ", disk->dev->raidname (disk));
}
if (raid_level == 5)
printf ("raid5rec ");
if (raid_level == 6)
printf ("raid6rec ");
}
static void
probe (const char *path, char *device_name)
{
char *drive_name = NULL;
char *grub_path = NULL;
char *filebuf_via_grub = NULL, *filebuf_via_sys = NULL;
grub_device_t dev = NULL;
grub_fs_t fs;
if (path == NULL)
{
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__sun__)
if (! grub_util_check_char_device (device_name))
grub_util_error (_("%s is not a character device"), device_name);
#else
if (! grub_util_check_block_device (device_name))
grub_util_error (_("%s is not a block device"), device_name);
#endif
}
else
{
grub_path = canonicalize_file_name (path);
device_name = grub_guess_root_device (grub_path);
}
if (! device_name)
grub_util_error (_("cannot find a device for %s (is /dev mounted?)"), path);
if (print == PRINT_DEVICE)
{
printf ("%s\n", device_name);
goto end;
}
drive_name = grub_util_get_grub_dev (device_name);
if (! drive_name)
grub_util_error (_("cannot find a GRUB drive for %s. Check your device.map"),
device_name);
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_HINT_STR)
{
const char *orig_path = grub_util_devname_to_ofpath (device_name);
char *ofpath = escape_of_path (orig_path);
char *biosname, *bare, *efi;
const char *map;
printf ("--hint-ieee1275=");
print_full_name (ofpath, dev);
printf (" ");
free (ofpath);
biosname = guess_bios_drive (device_name);
if (biosname)
{
printf ("--hint-bios=");
print_full_name (biosname, dev);
printf (" ");
}
free (biosname);
efi = guess_efi_drive (device_name);
if (efi)
{
printf ("--hint-efi=");
print_full_name (efi, dev);
printf (" ");
}
free (efi);
bare = guess_baremetal_drive (device_name);
if (bare)
{
printf ("--hint-baremetal=");
print_full_name (bare, dev);
printf (" ");
}
free (biosname);
/* FIXME: Add ARC hint. */
map = grub_util_biosdisk_get_compatibility_hint (dev->disk);
if (map)
{
printf ("--hint=");
print_full_name (map, dev);
printf (" ");
}
printf ("\n");
goto end;
}
if (print == PRINT_COMPATIBILITY_HINT)
{
const char *map;
char *biosname;
map = grub_util_biosdisk_get_compatibility_hint (dev->disk);
if (map)
{
printf ("%s\n", map);
goto end;
}
biosname = guess_bios_drive (device_name);
if (biosname)
print_full_name (biosname, dev);
printf ("\n");
free (biosname);
goto end;
}
if (print == PRINT_BIOS_HINT)
{
char *biosname;
biosname = guess_bios_drive (device_name);
if (biosname)
print_full_name (biosname, dev);
printf ("\n");
free (biosname);
goto end;
}
if (print == PRINT_IEEE1275_HINT)
{
const char *orig_path = grub_util_devname_to_ofpath (device_name);
char *ofpath = escape_of_path (orig_path);
const char *map;
map = grub_util_biosdisk_get_compatibility_hint (dev->disk);
if (map)
{
printf (" ");
print_full_name (map, dev);
}
printf (" ");
print_full_name (ofpath, dev);
printf ("\n");
free (ofpath);
goto end;
}
if (print == PRINT_EFI_HINT)
{
char *biosname;
char *name;
const char *map;
biosname = guess_efi_drive (device_name);
map = grub_util_biosdisk_get_compatibility_hint (dev->disk);
if (map)
{
printf (" ");
print_full_name (map, dev);
}
if (biosname)
{
printf (" ");
print_full_name (biosname, dev);
}
printf ("\n");
free (biosname);
goto end;
}
if (print == PRINT_BAREMETAL_HINT)
{
char *biosname;
char *name;
const char *map;
biosname = guess_baremetal_drive (device_name);
map = grub_util_biosdisk_get_compatibility_hint (dev->disk);
if (map)
{
printf (" ");
print_full_name (map, dev);
}
if (biosname)
{
printf (" ");
print_full_name (biosname, dev);
}
printf ("\n");
free (biosname);
goto end;
}
if (print == PRINT_ARC_HINT)
{
const char *map;
map = grub_util_biosdisk_get_compatibility_hint (dev->disk);
if (map)
{
printf (" ");
print_full_name (map, dev);
}
printf ("\n");
/* FIXME */
goto end;
}
if (print == PRINT_ABSTRACTION)
{
probe_abstraction (dev->disk);
printf ("\n");
goto end;
}
if (print == PRINT_CRYPTODISK_UUID)
{
probe_cryptodisk_uuid (dev->disk);
printf ("\n");
goto end;
}
if (print == PRINT_PARTMAP)
{
/* Check if dev->disk itself is contained in a partmap. */
probe_partmap (dev->disk);
printf ("\n");
goto end;
}
fs = grub_fs_probe (dev);
if (! fs)
grub_util_error ("%s", _(grub_errmsg));
if (print == PRINT_FS)
{
printf ("%s\n", fs->name);
}
else if (print == PRINT_FS_UUID)
{
char *uuid;
if (! fs->uuid)
grub_util_error (_("%s does not support UUIDs"), fs->name);
if (fs->uuid (dev, &uuid) != GRUB_ERR_NONE)
grub_util_error ("%s", grub_errmsg);
printf ("%s\n", uuid);
}
else if (print == PRINT_FS_LABEL)
{
char *label;
if (! fs->label)
grub_util_error (_("%s does not support labels"), fs->name);
if (fs->label (dev, &label) != GRUB_ERR_NONE)
grub_util_error ("%s", _(grub_errmsg));
printf ("%s\n", label);
}
end:
if (dev)
grub_device_close (dev);
free (grub_path);
free (filebuf_via_grub);
free (filebuf_via_sys);
free (drive_name);
}
static struct option options[] =
{
{"device", no_argument, 0, 'd'},
{"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 `%s --help' for more information.\n"), program_name);
else
printf (_("\
Usage: %s [OPTION]... [PATH|DEVICE]\n\
\n\
Probe device information for a given path (or device, if the -d option is given).\n\
\n\
-d, --device given argument is a system device, not a path\n\
-m, --device-map=FILE use FILE as the device map [default=%s]\n\
-t, --target=(fs|fs_uuid|fs_label|drive|device|partmap|abstraction|cryptodisk_uuid)\n\
print filesystem module, GRUB drive, system device, partition map module, abstraction module or CRYPTO UUID [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\
"), program_name,
DEFAULT_DEVICE_MAP, PACKAGE_BUGREPORT);
exit (status);
}
int
main (int argc, char *argv[])
{
char *dev_map = 0;
char *argument;
set_program_name (argv[0]);
grub_util_init_nls ();
/* Check for options. */
while (1)
{
int c = getopt_long (argc, argv, "dm:t:hVv", options, 0);
if (c == -1)
break;
else
switch (c)
{
case 'd':
argument_is_device = 1;
break;
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, "fs_uuid"))
print = PRINT_FS_UUID;
else if (!strcmp (optarg, "fs_label"))
print = PRINT_FS_LABEL;
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 if (!strcmp (optarg, "abstraction"))
print = PRINT_ABSTRACTION;
else if (!strcmp (optarg, "cryptodisk_uuid"))
print = PRINT_CRYPTODISK_UUID;
else if (!strcmp (optarg, "hints_string"))
print = PRINT_HINT_STR;
else if (!strcmp (optarg, "bios_hints"))
print = PRINT_BIOS_HINT;
else if (!strcmp (optarg, "ieee1275_hints"))
print = PRINT_IEEE1275_HINT;
else if (!strcmp (optarg, "baremetal_hints"))
print = PRINT_BAREMETAL_HINT;
else if (!strcmp (optarg, "efi_hints"))
print = PRINT_EFI_HINT;
else if (!strcmp (optarg, "arc_hints"))
print = PRINT_ARC_HINT;
else if (!strcmp (optarg, "compatibility_hint"))
print = PRINT_COMPATIBILITY_HINT;
else
usage (1);
break;
case 'h':
usage (0);
break;
case 'V':
printf ("%s (%s) %s\n", program_name, PACKAGE_NAME, PACKAGE_VERSION);
return 0;
case 'v':
verbosity++;
break;
default:
usage (1);
break;
}
}
if (verbosity > 1)
grub_env_set ("debug", "all");
/* Obtain ARGUMENT. */
if (optind >= argc)
{
fprintf (stderr, _("No path or device is specified.\n"));
usage (1);
}
if (optind + 1 != argc)
{
fprintf (stderr, _("Unknown extra argument `%s'.\n"), argv[optind + 1]);
usage (1);
}
argument = argv[optind];
/* Initialize the emulated biosdisk driver. */
grub_util_biosdisk_init (dev_map ? : DEFAULT_DEVICE_MAP);
/* Initialize all modules. */
grub_init_all ();
grub_gcry_init_all ();
grub_lvm_fini ();
grub_mdraid09_fini ();
grub_mdraid1x_fini ();
grub_raid_fini ();
grub_raid_init ();
grub_mdraid09_init ();
grub_mdraid1x_init ();
grub_lvm_init ();
/* Do it. */
if (argument_is_device)
probe (NULL, argument);
else
probe (argument, NULL);
/* Free resources. */
grub_gcry_fini_all ();
grub_fini_all ();
grub_util_biosdisk_fini ();
free (dev_map);
return 0;
}
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