114 lines
3.0 KiB
C
114 lines
3.0 KiB
C
/* raid.c - RAID support for GRUB utils. */
|
|
/*
|
|
* GRUB -- GRand Unified Bootloader
|
|
* Copyright (C) 2006,2007,2008 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/>.
|
|
*/
|
|
|
|
/* We only support RAID on Linux. */
|
|
#ifdef __linux__
|
|
#include <grub/emu/misc.h>
|
|
#include <grub/util/misc.h>
|
|
#include <grub/util/raid.h>
|
|
|
|
#include <string.h>
|
|
#include <fcntl.h>
|
|
#include <sys/ioctl.h>
|
|
#include <errno.h>
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/major.h>
|
|
#include <linux/raid/md_p.h>
|
|
#include <linux/raid/md_u.h>
|
|
|
|
static char *
|
|
grub_util_getdiskname (int major, int minor)
|
|
{
|
|
char *name = xmalloc (15);
|
|
|
|
if (major == LOOP_MAJOR)
|
|
sprintf (name, "/dev/loop%d", minor);
|
|
else if (major == IDE0_MAJOR)
|
|
sprintf (name, "/dev/hd%c", 'a' + minor / 64);
|
|
else if (major == IDE1_MAJOR)
|
|
sprintf (name, "/dev/hd%c", 'c' + minor / 64);
|
|
else if (major == IDE2_MAJOR)
|
|
sprintf (name, "/dev/hd%c", 'e' + minor / 64);
|
|
else if (major == IDE3_MAJOR)
|
|
sprintf (name, "/dev/hd%c", 'g' + minor / 64);
|
|
else if (major == SCSI_DISK0_MAJOR)
|
|
sprintf (name, "/dev/sd%c", 'a' + minor / 16);
|
|
else
|
|
grub_util_error ("unknown device number: %d, %d", major, minor);
|
|
|
|
return name;
|
|
}
|
|
|
|
char **
|
|
grub_util_raid_getmembers (char *name)
|
|
{
|
|
int fd, ret, i, j;
|
|
char *devname;
|
|
char **devicelist;
|
|
mdu_version_t version;
|
|
mdu_array_info_t info;
|
|
mdu_disk_info_t disk;
|
|
|
|
devname = xmalloc (strlen (name) + 6);
|
|
strcpy (devname, "/dev/");
|
|
strcpy (devname+5, name);
|
|
|
|
fd = open (devname, O_RDONLY);
|
|
|
|
if (fd == -1)
|
|
grub_util_error ("can't open %s: %s", devname, strerror (errno));
|
|
|
|
free (devname);
|
|
|
|
ret = ioctl (fd, RAID_VERSION, &version);
|
|
if (ret != 0)
|
|
grub_util_error ("ioctl RAID_VERSION error: %s", strerror (errno));
|
|
|
|
if (version.major != 0 || version.minor != 90)
|
|
grub_util_error ("unsupported RAID version: %d.%d",
|
|
version.major, version.minor);
|
|
|
|
ret = ioctl (fd, GET_ARRAY_INFO, &info);
|
|
if (ret != 0)
|
|
grub_util_error ("ioctl GET_ARRAY_INFO error: %s", strerror (errno));
|
|
|
|
devicelist = xmalloc ((info.nr_disks + 1) * sizeof (char *));
|
|
|
|
for (i = 0, j = 0; i <info.nr_disks; i++)
|
|
{
|
|
disk.number = i;
|
|
ret = ioctl (fd, GET_DISK_INFO, &disk);
|
|
if (ret != 0)
|
|
grub_util_error ("ioctl GET_DISK_INFO error: %s", strerror (errno));
|
|
|
|
if (disk.state & (1 << MD_DISK_ACTIVE))
|
|
{
|
|
devicelist[j] = grub_util_getdiskname (disk.major, disk.minor);
|
|
j++;
|
|
}
|
|
}
|
|
|
|
devicelist[j] = NULL;
|
|
|
|
return devicelist;
|
|
}
|
|
|
|
#endif /* ! __linux__ */
|