diff --git a/libc/kernel/common/linux/raid/md.h b/libc/kernel/common/linux/raid/md.h
new file mode 100644
index 0000000..d609c06
--- /dev/null
+++ b/libc/kernel/common/linux/raid/md.h
@@ -0,0 +1,49 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _MD_H
+#define _MD_H
+
+#include <linux/blkdev.h>
+#include <asm/semaphore.h>
+#include <linux/major.h>
+#include <linux/ioctl.h>
+#include <linux/types.h>
+#include <linux/bitops.h>
+#include <linux/module.h>
+#include <linux/hdreg.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/smp_lock.h>
+#include <linux/delay.h>
+#include <net/checksum.h>
+#include <linux/random.h>
+#include <linux/kernel_stat.h>
+#include <asm/io.h>
+#include <linux/completion.h>
+#include <linux/mempool.h>
+#include <linux/list.h>
+#include <linux/reboot.h>
+#include <linux/vmalloc.h>
+#include <linux/blkpg.h>
+#include <linux/bio.h>
+
+#include <linux/raid/md_p.h>
+#include <linux/raid/md_u.h>
+#include <linux/raid/md_k.h>
+
+#define MD_MAJOR_VERSION 0
+#define MD_MINOR_VERSION 90
+
+#define MD_PATCHLEVEL_VERSION 3
+
+#endif
+
diff --git a/libc/kernel/common/linux/raid/md_k.h b/libc/kernel/common/linux/raid/md_k.h
new file mode 100644
index 0000000..c8b858c
--- /dev/null
+++ b/libc/kernel/common/linux/raid/md_k.h
@@ -0,0 +1,184 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _MD_K_H
+#define _MD_K_H
+
+#include "../../../drivers/md/dm-bio-list.h"
+
+#define LEVEL_MULTIPATH (-4)
+#define LEVEL_LINEAR (-1)
+#define LEVEL_FAULTY (-5)
+
+#define LEVEL_NONE (-1000000)
+
+#define MaxSector (~(sector_t)0)
+#define MD_THREAD_NAME_MAX 14
+
+typedef struct mddev_s mddev_t;
+typedef struct mdk_rdev_s mdk_rdev_t;
+
+#define MAX_MD_DEVS 256  
+
+#define MAX_CHUNK_SIZE (1<<30)
+
+struct mdk_rdev_s
+{
+ struct list_head same_set;
+
+ sector_t size;
+ mddev_t *mddev;
+ unsigned long last_events;
+
+ struct block_device *bdev;
+
+ struct page *sb_page;
+ int sb_loaded;
+ __u64 sb_events;
+ sector_t data_offset;
+ sector_t sb_offset;
+ int sb_size;
+ int preferred_minor;
+
+ struct kobject kobj;
+
+ unsigned long flags;
+#define Faulty 1  
+#define In_sync 2  
+#define WriteMostly 4  
+#define BarriersNotsupp 5  
+
+ int desc_nr;
+ int raid_disk;
+ int saved_raid_disk;
+ sector_t recovery_offset;
+
+ atomic_t nr_pending;
+ atomic_t read_errors;
+ atomic_t corrected_errors;
+};
+
+struct mddev_s
+{
+ void *private;
+ struct mdk_personality *pers;
+ dev_t unit;
+ int md_minor;
+ struct list_head disks;
+ int sb_dirty;
+ int ro;
+
+ struct gendisk *gendisk;
+
+ struct kobject kobj;
+
+ int major_version,
+ minor_version,
+ patch_version;
+ int persistent;
+ int chunk_size;
+ time_t ctime, utime;
+ int level, layout;
+ char clevel[16];
+ int raid_disks;
+ int max_disks;
+ sector_t size;
+ sector_t array_size;
+ __u64 events;
+
+ char uuid[16];
+
+ sector_t reshape_position;
+ int delta_disks, new_level, new_layout, new_chunk;
+
+ struct mdk_thread_s *thread;
+ struct mdk_thread_s *sync_thread;
+ sector_t curr_resync;
+ unsigned long resync_mark;
+ sector_t resync_mark_cnt;
+ sector_t curr_mark_cnt;
+
+ sector_t resync_max_sectors;
+
+ sector_t resync_mismatches;
+
+ sector_t suspend_lo;
+ sector_t suspend_hi;
+
+ int sync_speed_min;
+ int sync_speed_max;
+
+ int ok_start_degraded;
+
+#define MD_RECOVERY_RUNNING 0
+#define MD_RECOVERY_SYNC 1
+#define MD_RECOVERY_ERR 2
+#define MD_RECOVERY_INTR 3
+#define MD_RECOVERY_DONE 4
+#define MD_RECOVERY_NEEDED 5
+#define MD_RECOVERY_REQUESTED 6
+#define MD_RECOVERY_CHECK 7
+#define MD_RECOVERY_RESHAPE 8
+#define MD_RECOVERY_FROZEN 9
+
+ unsigned long recovery;
+
+ int in_sync;
+ struct mutex reconfig_mutex;
+ atomic_t active;
+
+ int changed;
+ int degraded;
+ int barriers_work;
+ struct bio *biolist;
+
+ atomic_t recovery_active;
+ wait_queue_head_t recovery_wait;
+ sector_t recovery_cp;
+
+ spinlock_t write_lock;
+ wait_queue_head_t sb_wait;
+ atomic_t pending_writes;
+
+ unsigned int safemode;
+ unsigned int safemode_delay;
+ struct timer_list safemode_timer;
+ atomic_t writes_pending;
+ request_queue_t *queue;
+
+ atomic_t write_behind;
+ unsigned int max_write_behind;
+
+ struct bitmap *bitmap;
+ struct file *bitmap_file;
+ long bitmap_offset;
+ long default_bitmap_offset;
+
+ struct list_head all_mddevs;
+};
+
+struct md_sysfs_entry {
+ struct attribute attr;
+ ssize_t (*show)(mddev_t *, char *);
+ ssize_t (*store)(mddev_t *, const char *, size_t);
+};
+
+#define ITERATE_RDEV_GENERIC(head,rdev,tmp)     for ((tmp) = (head).next;   (rdev) = (list_entry((tmp), mdk_rdev_t, same_set)),   (tmp) = (tmp)->next, (tmp)->prev != &(head)   ; )
+#define ITERATE_RDEV(mddev,rdev,tmp)   ITERATE_RDEV_GENERIC((mddev)->disks,rdev,tmp)
+#define ITERATE_RDEV_PENDING(rdev,tmp)   ITERATE_RDEV_GENERIC(pending_raid_disks,rdev,tmp)
+
+#define THREAD_WAKEUP 0
+
+#define __wait_event_lock_irq(wq, condition, lock, cmd)  do {   wait_queue_t __wait;   init_waitqueue_entry(&__wait, current);     add_wait_queue(&wq, &__wait);   for (;;) {   set_current_state(TASK_UNINTERRUPTIBLE);   if (condition)   break;   spin_unlock_irq(&lock);   cmd;   schedule();   spin_lock_irq(&lock);   }   current->state = TASK_RUNNING;   remove_wait_queue(&wq, &__wait);  } while (0)
+
+#define wait_event_lock_irq(wq, condition, lock, cmd)  do {   if (condition)   break;   __wait_event_lock_irq(wq, condition, lock, cmd);  } while (0)
+
+#endif
diff --git a/libc/kernel/common/linux/raid/md_p.h b/libc/kernel/common/linux/raid/md_p.h
new file mode 100644
index 0000000..ab856a7
--- /dev/null
+++ b/libc/kernel/common/linux/raid/md_p.h
@@ -0,0 +1,135 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _MD_P_H
+#define _MD_P_H
+
+#define MD_RESERVED_BYTES (64 * 1024)
+#define MD_RESERVED_SECTORS (MD_RESERVED_BYTES / 512)
+#define MD_RESERVED_BLOCKS (MD_RESERVED_BYTES / BLOCK_SIZE)
+
+#define MD_NEW_SIZE_SECTORS(x) ((x & ~(MD_RESERVED_SECTORS - 1)) - MD_RESERVED_SECTORS)
+#define MD_NEW_SIZE_BLOCKS(x) ((x & ~(MD_RESERVED_BLOCKS - 1)) - MD_RESERVED_BLOCKS)
+
+#define MD_SB_BYTES 4096
+#define MD_SB_WORDS (MD_SB_BYTES / 4)
+#define MD_SB_BLOCKS (MD_SB_BYTES / BLOCK_SIZE)
+#define MD_SB_SECTORS (MD_SB_BYTES / 512)
+
+#define MD_SB_GENERIC_OFFSET 0
+#define MD_SB_PERSONALITY_OFFSET 64
+#define MD_SB_DISKS_OFFSET 128
+#define MD_SB_DESCRIPTOR_OFFSET 992
+
+#define MD_SB_GENERIC_CONSTANT_WORDS 32
+#define MD_SB_GENERIC_STATE_WORDS 32
+#define MD_SB_GENERIC_WORDS (MD_SB_GENERIC_CONSTANT_WORDS + MD_SB_GENERIC_STATE_WORDS)
+#define MD_SB_PERSONALITY_WORDS 64
+#define MD_SB_DESCRIPTOR_WORDS 32
+#define MD_SB_DISKS 27
+#define MD_SB_DISKS_WORDS (MD_SB_DISKS*MD_SB_DESCRIPTOR_WORDS)
+#define MD_SB_RESERVED_WORDS (1024 - MD_SB_GENERIC_WORDS - MD_SB_PERSONALITY_WORDS - MD_SB_DISKS_WORDS - MD_SB_DESCRIPTOR_WORDS)
+#define MD_SB_EQUAL_WORDS (MD_SB_GENERIC_WORDS + MD_SB_PERSONALITY_WORDS + MD_SB_DISKS_WORDS)
+
+#define MD_DISK_FAULTY 0  
+#define MD_DISK_ACTIVE 1  
+#define MD_DISK_SYNC 2  
+#define MD_DISK_REMOVED 3  
+
+#define MD_DISK_WRITEMOSTLY 9  
+
+typedef struct mdp_device_descriptor_s {
+ __u32 number;
+ __u32 major;
+ __u32 minor;
+ __u32 raid_disk;
+ __u32 state;
+ __u32 reserved[MD_SB_DESCRIPTOR_WORDS - 5];
+} mdp_disk_t;
+
+#define MD_SB_MAGIC 0xa92b4efc
+
+#define MD_SB_CLEAN 0
+#define MD_SB_ERRORS 1
+
+#define MD_SB_BITMAP_PRESENT 8  
+
+typedef struct mdp_superblock_s {
+
+ __u32 md_magic;
+ __u32 major_version;
+ __u32 minor_version;
+ __u32 patch_version;
+ __u32 gvalid_words;
+ __u32 set_uuid0;
+ __u32 ctime;
+ __u32 level;
+ __u32 size;
+ __u32 nr_disks;
+ __u32 raid_disks;
+ __u32 md_minor;
+ __u32 not_persistent;
+ __u32 set_uuid1;
+ __u32 set_uuid2;
+ __u32 set_uuid3;
+ __u32 gstate_creserved[MD_SB_GENERIC_CONSTANT_WORDS - 16];
+
+ __u32 utime;
+ __u32 state;
+ __u32 active_disks;
+ __u32 working_disks;
+ __u32 failed_disks;
+ __u32 spare_disks;
+ __u32 sb_csum;
+#ifdef __BIG_ENDIAN
+ __u32 events_hi;
+ __u32 events_lo;
+ __u32 cp_events_hi;
+ __u32 cp_events_lo;
+#else
+ __u32 events_lo;
+ __u32 events_hi;
+ __u32 cp_events_lo;
+ __u32 cp_events_hi;
+#endif
+ __u32 recovery_cp;
+
+ __u64 reshape_position;
+ __u32 new_level;
+ __u32 delta_disks;
+ __u32 new_layout;
+ __u32 new_chunk;
+ __u32 gstate_sreserved[MD_SB_GENERIC_STATE_WORDS - 18];
+
+ __u32 layout;
+ __u32 chunk_size;
+ __u32 root_pv;
+ __u32 root_block;
+ __u32 pstate_reserved[MD_SB_PERSONALITY_WORDS - 4];
+
+ mdp_disk_t disks[MD_SB_DISKS];
+
+ __u32 reserved[MD_SB_RESERVED_WORDS];
+
+ mdp_disk_t this_disk;
+
+} mdp_super_t;
+
+#define WriteMostly1 1  
+
+#define MD_FEATURE_BITMAP_OFFSET 1
+#define MD_FEATURE_RECOVERY_OFFSET 2  
+#define MD_FEATURE_RESHAPE_ACTIVE 4
+
+#define MD_FEATURE_ALL (1|2|4)
+
+#endif
+
diff --git a/libc/kernel/common/linux/raid/md_u.h b/libc/kernel/common/linux/raid/md_u.h
new file mode 100644
index 0000000..3671187
--- /dev/null
+++ b/libc/kernel/common/linux/raid/md_u.h
@@ -0,0 +1,104 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _MD_U_H
+#define _MD_U_H
+
+#define RAID_VERSION _IOR (MD_MAJOR, 0x10, mdu_version_t)
+#define GET_ARRAY_INFO _IOR (MD_MAJOR, 0x11, mdu_array_info_t)
+#define GET_DISK_INFO _IOR (MD_MAJOR, 0x12, mdu_disk_info_t)
+#define PRINT_RAID_DEBUG _IO (MD_MAJOR, 0x13)
+#define RAID_AUTORUN _IO (MD_MAJOR, 0x14)
+#define GET_BITMAP_FILE _IOR (MD_MAJOR, 0x15, mdu_bitmap_file_t)
+
+#define CLEAR_ARRAY _IO (MD_MAJOR, 0x20)
+#define ADD_NEW_DISK _IOW (MD_MAJOR, 0x21, mdu_disk_info_t)
+#define HOT_REMOVE_DISK _IO (MD_MAJOR, 0x22)
+#define SET_ARRAY_INFO _IOW (MD_MAJOR, 0x23, mdu_array_info_t)
+#define SET_DISK_INFO _IO (MD_MAJOR, 0x24)
+#define WRITE_RAID_INFO _IO (MD_MAJOR, 0x25)
+#define UNPROTECT_ARRAY _IO (MD_MAJOR, 0x26)
+#define PROTECT_ARRAY _IO (MD_MAJOR, 0x27)
+#define HOT_ADD_DISK _IO (MD_MAJOR, 0x28)
+#define SET_DISK_FAULTY _IO (MD_MAJOR, 0x29)
+#define HOT_GENERATE_ERROR _IO (MD_MAJOR, 0x2a)
+#define SET_BITMAP_FILE _IOW (MD_MAJOR, 0x2b, int)
+
+#define RUN_ARRAY _IOW (MD_MAJOR, 0x30, mdu_param_t)
+#define START_ARRAY _IO (MD_MAJOR, 0x31)
+#define STOP_ARRAY _IO (MD_MAJOR, 0x32)
+#define STOP_ARRAY_RO _IO (MD_MAJOR, 0x33)
+#define RESTART_ARRAY_RW _IO (MD_MAJOR, 0x34)
+
+typedef struct mdu_version_s {
+ int major;
+ int minor;
+ int patchlevel;
+} mdu_version_t;
+
+typedef struct mdu_array_info_s {
+
+ int major_version;
+ int minor_version;
+ int patch_version;
+ int ctime;
+ int level;
+ int size;
+ int nr_disks;
+ int raid_disks;
+ int md_minor;
+ int not_persistent;
+
+ int utime;
+ int state;
+ int active_disks;
+ int working_disks;
+ int failed_disks;
+ int spare_disks;
+
+ int layout;
+ int chunk_size;
+
+} mdu_array_info_t;
+
+typedef struct mdu_disk_info_s {
+
+ int number;
+ int major;
+ int minor;
+ int raid_disk;
+ int state;
+
+} mdu_disk_info_t;
+
+typedef struct mdu_start_info_s {
+
+ int major;
+ int minor;
+ int raid_disk;
+ int state;
+
+} mdu_start_info_t;
+
+typedef struct mdu_bitmap_file_s
+{
+ char pathname[4096];
+} mdu_bitmap_file_t;
+
+typedef struct mdu_param_s
+{
+ int personality;
+ int chunk_size;
+ int max_fault;
+} mdu_param_t;
+
+#endif
+
diff --git a/libc/kernel/common/linux/raid/xor.h b/libc/kernel/common/linux/raid/xor.h
new file mode 100644
index 0000000..01e9f45
--- /dev/null
+++ b/libc/kernel/common/linux/raid/xor.h
@@ -0,0 +1,32 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _XOR_H
+#define _XOR_H
+
+#include <linux/raid/md.h>
+
+#define MAX_XOR_BLOCKS 5
+
+struct xor_block_template {
+ struct xor_block_template *next;
+ const char *name;
+ int speed;
+ void (*do_2)(unsigned long, unsigned long *, unsigned long *);
+ void (*do_3)(unsigned long, unsigned long *, unsigned long *,
+ unsigned long *);
+ void (*do_4)(unsigned long, unsigned long *, unsigned long *,
+ unsigned long *, unsigned long *);
+ void (*do_5)(unsigned long, unsigned long *, unsigned long *,
+ unsigned long *, unsigned long *, unsigned long *);
+};
+
+#endif