]>
git.proxmox.com Git - grub2.git/blob - util/raid.c
1 /* raid.c - RAID support for GRUB utils. */
3 * GRUB -- GRand Unified Bootloader
4 * Copyright (C) 2006,2007,2008 Free Software Foundation, Inc.
6 * GRUB is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * GRUB is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
20 /* We only support RAID on Linux. */
22 #include <grub/util/misc.h>
23 #include <grub/util/raid.h>
27 #include <sys/ioctl.h>
30 #include <linux/types.h>
31 #include <linux/major.h>
32 #include <linux/raid/md_p.h>
33 #include <linux/raid/md_u.h>
36 grub_util_getdiskname (int major
, int minor
)
38 char *name
= xmalloc (15);
40 if (major
== LOOP_MAJOR
)
41 sprintf (name
, "/dev/loop%d", minor
);
42 else if (major
== IDE0_MAJOR
)
43 sprintf (name
, "/dev/hd%c", 'a' + minor
/ 64);
44 else if (major
== IDE1_MAJOR
)
45 sprintf (name
, "/dev/hd%c", 'c' + minor
/ 64);
46 else if (major
== IDE2_MAJOR
)
47 sprintf (name
, "/dev/hd%c", 'e' + minor
/ 64);
48 else if (major
== IDE3_MAJOR
)
49 sprintf (name
, "/dev/hd%c", 'g' + minor
/ 64);
50 else if (major
== SCSI_DISK0_MAJOR
)
51 sprintf (name
, "/dev/sd%c", 'a' + minor
/ 16);
53 grub_util_error ("unknown device number: %d, %d", major
, minor
);
59 grub_util_raid_getmembers (char *name
)
64 mdu_version_t version
;
65 mdu_array_info_t info
;
68 devname
= xmalloc (strlen (name
) + 6);
69 strcpy (devname
, "/dev/");
70 strcpy (devname
+5, name
);
72 fd
= open (devname
, O_RDONLY
);
75 grub_util_error ("can't open %s: %s", devname
, strerror (errno
));
79 ret
= ioctl (fd
, RAID_VERSION
, &version
);
81 grub_util_error ("ioctl RAID_VERSION error: %s", strerror (errno
));
83 if (version
.major
!= 0 || version
.minor
!= 90)
84 grub_util_error ("unsupported RAID version: %d.%d",
85 version
.major
, version
.minor
);
87 ret
= ioctl (fd
, GET_ARRAY_INFO
, &info
);
89 grub_util_error ("ioctl GET_ARRAY_INFO error: %s", strerror (errno
));
91 devicelist
= xmalloc ((info
.nr_disks
+ 1) * sizeof (char *));
93 for (i
= 0, j
= 0; i
<info
.nr_disks
; i
++)
96 ret
= ioctl (fd
, GET_DISK_INFO
, &disk
);
98 grub_util_error ("ioctl GET_DISK_INFO error: %s", strerror (errno
));
100 if (disk
.state
& (1 << MD_DISK_ACTIVE
))
102 devicelist
[j
] = grub_util_getdiskname (disk
.major
, disk
.minor
);
107 devicelist
[j
] = NULL
;
112 #endif /* ! __linux__ */