| /* 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/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__ */ |