94 lines
2.6 KiB
C
94 lines
2.6 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/emu/getroot.h>
|
|
|
|
#include <string.h>
|
|
#include <fcntl.h>
|
|
#include <sys/ioctl.h>
|
|
#include <errno.h>
|
|
#include <sys/types.h>
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/major.h>
|
|
#include <linux/raid/md_p.h>
|
|
#include <linux/raid/md_u.h>
|
|
|
|
char **
|
|
grub_util_raid_getmembers (const char *name, int bootable)
|
|
{
|
|
int fd, ret, i, j;
|
|
char **devicelist;
|
|
mdu_version_t version;
|
|
mdu_array_info_t info;
|
|
mdu_disk_info_t disk;
|
|
|
|
fd = open (name, O_RDONLY);
|
|
|
|
if (fd == -1)
|
|
grub_util_error ("can't open %s: %s", name, strerror (errno));
|
|
|
|
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)
|
|
&& (version.major != 1 || version.minor != 0)
|
|
&& (version.major != 1 || version.minor != 1)
|
|
&& (version.major != 1 || version.minor != 2))
|
|
grub_util_error ("unsupported RAID version: %d.%d",
|
|
version.major, version.minor);
|
|
|
|
if (bootable && (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_find_device (NULL,
|
|
makedev (disk.major, disk.minor));
|
|
j++;
|
|
}
|
|
}
|
|
|
|
devicelist[j] = NULL;
|
|
|
|
close (fd);
|
|
|
|
return devicelist;
|
|
}
|
|
|
|
#endif /* ! __linux__ */
|