[thirdparty/mdadm.git] / mdadm.h

/*
 * mdadm - manage Linux "md" devices aka RAID arrays.
 *
 * Copyright (C) 2001-2002 Neil Brown <neilb@cse.unsw.edu.au>
 *
 *
 *    This program 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 2 of the License, or
 *    (at your option) any later version.
 *
 *    This program 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 this program; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *    Author: Neil Brown
 *    Email: <neilb@cse.unsw.edu.au>
 *    Paper: Neil Brown
 *           School of Computer Science and Engineering
 *           The University of New South Wales
 *           Sydney, 2052
 *           Australia
 */

#define	_GNU_SOURCE
#include	<unistd.h>
#ifndef __dietlibc__
extern __off64_t lseek64 __P ((int __fd, __off64_t __offset, int __whence));
#endif

#include	<sys/types.h>
#include	<sys/stat.h>
#include	<stdlib.h>
#include	<time.h>
#include	<sys/time.h>
#include	<getopt.h>
#include	<fcntl.h>
#include	<stdio.h>
#include	<errno.h>
#include	<string.h>
#include	<syslog.h>
#ifdef __dietlibc__NONO
int strncmp(const char *s1, const char *s2, size_t n) __THROW __pure__;
char *strncpy(char *dest, const char *src, size_t n) __THROW;
#include    <strings.h>
#endif


#include	<linux/kdev_t.h>
/*#include	<linux/fs.h> */
#include	<sys/mount.h>
#include	<asm/types.h>
#include	<sys/ioctl.h>
#define	MD_MAJOR 9
#define MdpMinorShift 6

#ifndef BLKGETSIZE64
#define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size in bytes (u64 *arg) */
#endif

#define DEFAULT_BITMAP_CHUNK 4096
#define DEFAULT_BITMAP_DELAY 5
#define DEFAULT_MAX_WRITE_BEHIND 256

#include	"md_u.h"
#include	"md_p.h"
#include	"bitmap.h"

#include <endian.h>
/* #include "asm/byteorder.h" Redhat don't like this so... */
#if __BYTE_ORDER == __LITTLE_ENDIAN
#  include <linux/byteorder/little_endian.h>
#elif __BYTE_ORDER == __BIG_ENDIAN
#  include <linux/byteorder/big_endian.h>
#elif __BYTE_ORDER == __PDP_ENDIAN
#  include <linux/byteorder/pdp_endian.h>
#else
#  error "unknown endianness."
#endif


/* general information that might be extracted from a superblock */
struct mdinfo {
	mdu_array_info_t	array;
	mdu_disk_info_t		disk;
	__u64			events;
	int			uuid[4];
	char			name[33];
	unsigned long long	data_offset;
	unsigned long long	component_size;
	int			reshape_active;
	unsigned long long	reshape_progress;
	int			new_level, delta_disks, new_layout, new_chunk;
};

struct createinfo {
	int	uid;
	int	gid;
	int	autof;
	int	mode;
};

#define Name "mdadm"

enum mode {
	ASSEMBLE=1,
	BUILD,
	CREATE,
	MANAGE,
	MISC,
	MONITOR,
	GROW,
};

extern char short_options[];
extern char short_bitmap_auto_options[];
extern struct option long_options[];
extern char Version[], Usage[], Help[], OptionHelp[],
	Help_create[], Help_build[], Help_assemble[], Help_grow[],
	Help_manage[], Help_misc[], Help_monitor[], Help_config[];

/* structures read from config file */
/* List of mddevice names and identifiers
 * Identifiers can be:
 *    uuid=128-hex-uuid
 *    super-minor=decimal-minor-number-from-superblock
 *    devices=comma,separated,list,of,device,names,with,wildcards
 *
 * If multiple fields are present, the intersection of all matching
 * devices is considered
 */
#define UnSet (0xfffe)
typedef struct mddev_ident_s {
	char	*devname;
	
	int	uuid_set;
	int	uuid[4];
	char	name[33];

	unsigned int super_minor;

	char	*devices;	/* comma separated list of device
				 * names with wild cards
				 */
	int	level;
	unsigned int raid_disks;
	unsigned int spare_disks;
	struct supertype *st;
	int	autof;		/* 1 for normal, 2 for partitioned */
	char	*spare_group;
	char	*bitmap_file;
	int	bitmap_fd;

	struct mddev_ident_s *next;
} *mddev_ident_t;

/* List of device names - wildcards expanded */
typedef struct mddev_dev_s {
	char *devname;
	char disposition;	/* 'a' for add, 'r' for remove, 'f' for fail.
				 * Not set for names read from .config
				 */
	char writemostly;
	char re_add;
	struct mddev_dev_s *next;
} *mddev_dev_t;

typedef struct mapping {
	char *name;
	int num;
} mapping_t;


struct mdstat_ent {
	char		*dev;
	int		devnum;
	int		active;
	char		*level;
	char		*pattern; /* U or up, _ for down */
	int		percent; /* -1 if no resync */
	int		resync; /* 1 if resync, 0 if recovery */
	struct mdstat_ent *next;
};

extern struct mdstat_ent *mdstat_read(int hold, int start);
extern void free_mdstat(struct mdstat_ent *ms);
extern void mdstat_wait(int seconds);

/* Data structure for holding info read from sysfs */
struct sysdev {
	char	name[20];
	int	role;
	int	major, minor;
	unsigned long long offset, size;
	int	state;
	int	errors;
	struct sysdev *next;
};
struct sysarray {
	char	name[20];
	struct sysdev *devs;
	int	chunk;
	unsigned long long component_size;
	int	layout;
	int	level;
	int	spares;
};
/* various details can be requested */
#define	GET_LEVEL	1
#define	GET_LAYOUT	2
#define	GET_COMPONENT	4
#define	GET_CHUNK	8

#define	GET_DEVS	1024 /* gets role, major, minor */
#define	GET_OFFSET	2048
#define	GET_SIZE	4096
#define	GET_STATE	8192
#define	GET_ERROR	16384

/* If fd >= 0, get the array it is open on,
 * else use devnum. >=0 -> major9. <0.....
 */
extern struct sysarray *sysfs_read(int fd, int devnum, unsigned long options);
extern int sysfs_set_str(struct sysarray *sra, struct sysdev *dev,
			 char *name, char *val);
extern int sysfs_set_num(struct sysarray *sra, struct sysdev *dev,
			 char *name, unsigned long long val);
extern int sysfs_get_ll(struct sysarray *sra, struct sysdev *dev,
			char *name, unsigned long long *val);


extern int save_stripes(int *source, unsigned long long *offsets,
			int raid_disks, int chunk_size, int level, int layout,
			int nwrites, int *dest,
			unsigned long long start, unsigned long long length);
extern int restore_stripes(int *dest, unsigned long long *offsets,
			   int raid_disks, int chunk_size, int level, int layout,
			   int source, unsigned long long read_offset,
			   unsigned long long start, unsigned long long length);

#ifndef Sendmail
#define Sendmail "/usr/lib/sendmail -t"
#endif

#define SYSLOG_FACILITY LOG_DAEMON

extern char *map_num(mapping_t *map, int num);
extern int map_name(mapping_t *map, char *name);
extern mapping_t r5layout[], pers[], modes[], faultylayout[];

extern char *map_dev(int major, int minor, int create);


extern struct superswitch {
	void (*examine_super)(void *sbv);
	void (*brief_examine_super)(void *sbv);
	void (*detail_super)(void *sbv);
	void (*brief_detail_super)(void *sbv);
	void (*uuid_from_super)(int uuid[4], void *sbv);
	void (*getinfo_super)(struct mdinfo *info, void *sbv);
	int (*update_super)(struct mdinfo *info, void *sbv, char *update, char *devname, int verbose);
	__u64 (*event_super)(void *sbv);
	int (*init_super)(struct supertype *st, void **sbp, mdu_array_info_t *info, unsigned long long size, char *name);
	void (*add_to_super)(void *sbv, mdu_disk_info_t *dinfo);
	int (*store_super)(struct supertype *st, int fd, void *sbv);
	int (*write_init_super)(struct supertype *st, void *sbv, mdu_disk_info_t *dinfo, char *devname);
	int (*compare_super)(void **firstp, void *secondv);
	int (*load_super)(struct supertype *st, int fd, void **sbp, char *devname);
	struct supertype * (*match_metadata_desc)(char *arg);
	__u64 (*avail_size)(struct supertype *st, __u64 size);
	int (*add_internal_bitmap)(struct supertype *st, void *sbv, int chunk, int delay, int write_behind,
				   unsigned long long size, int may_change, int major);
	void (*locate_bitmap)(struct supertype *st, int fd, void *sbv);
	int (*write_bitmap)(struct supertype *st, int fd, void *sbv);
	int major;
	int swapuuid; /* true if uuid is bigending rather than hostendian */
} super0, super1, *superlist[];

struct supertype {
	struct superswitch *ss;
	int minor_version;
	int max_devs;
};

extern struct supertype *super_by_version(int vers, int minor);
extern struct supertype *guess_super(int fd);

#if __GNUC__ < 3
struct stat64;
#endif

#ifdef UCLIBC
  struct FTW {};
# define FTW_PHYS 1
#else
# include <ftw.h>
# ifdef __dietlibc__
#  define FTW_PHYS 1
# endif
#endif

extern int add_dev(const char *name, const struct stat *stb, int flag, struct FTW *s);


extern int Manage_ro(char *devname, int fd, int readonly);
extern int Manage_runstop(char *devname, int fd, int runstop, int quiet);
extern int Manage_resize(char *devname, int fd, long long size, int raid_disks);
extern int Manage_reconfig(char *devname, int fd, int layout);
extern int Manage_subdevs(char *devname, int fd,
			  mddev_dev_t devlist, int verbose);
extern int Grow_Add_device(char *devname, int fd, char *newdev);
extern int Grow_addbitmap(char *devname, int fd, char *file, int chunk, int delay, int write_behind, int force);
extern int Grow_reshape(char *devname, int fd, int quiet, char *backup_file,
			long long size,
			int level, int layout, int chunksize, int raid_disks);
extern int Grow_restart(struct supertype *st, struct mdinfo *info,
			int *fdlist, int cnt, char *backup_file);


extern int Assemble(struct supertype *st, char *mddev, int mdfd,
		    mddev_ident_t ident,
		    char *conffile,
		    mddev_dev_t devlist, char *backup_file,
		    int readonly, int runstop,
		    char *update,
		    int verbose, int force);

extern int Build(char *mddev, int mdfd, int chunk, int level, int layout,
		 int raiddisks,
		 mddev_dev_t devlist, int assume_clean,
		 char *bitmap_file, int bitmap_chunk, int write_behind, int delay, int verbose);


extern int Create(struct supertype *st, char *mddev, int mdfd,
		  int chunk, int level, int layout, unsigned long long size, int raiddisks, int sparedisks,
		  char *name,
		  int subdevs, mddev_dev_t devlist,
		  int runstop, int verbose, int force, int assume_clean,
		  char *bitmap_file, int bitmap_chunk, int write_behind, int delay);

extern int Detail(char *dev, int brief, int test);
extern int Query(char *dev);
extern int Examine(mddev_dev_t devlist, int brief, int scan, int SparcAdjust,
		   struct supertype *forcest);
extern int Monitor(mddev_dev_t devlist,
		   char *mailaddr, char *alert_cmd,
		   int period, int daemonise, int scan, int oneshot,
		   int dosyslog, char *config, int test, char *pidfile);

extern int Kill(char *dev, int force, int quiet);

extern int CreateBitmap(char *filename, int force, char uuid[16],
			unsigned long chunksize, unsigned long daemon_sleep,
			unsigned long write_behind,
			unsigned long long array_size,
			int major);
extern int ExamineBitmap(char *filename, int brief, struct supertype *st);
extern void bitmap_update_uuid(int fd, int *uuid);

extern int md_get_version(int fd);
extern int get_linux_version(void);
extern int parse_uuid(char *str, int uuid[4]);
extern int check_ext2(int fd, char *name);
extern int check_reiser(int fd, char *name);
extern int check_raid(int fd, char *name);

extern int get_mdp_major(void);
extern int dev_open(char *dev, int flags);
extern int is_standard(char *dev, int *nump);

extern int parse_auto(char *str, char *msg);
extern mddev_ident_t conf_get_ident(char *conffile, char *dev);
extern mddev_dev_t conf_get_devs(char *conffile);
extern struct createinfo *conf_get_create_info(char *conffile);
extern char *conf_get_mailaddr(char *conffile);
extern char *conf_get_mailfrom(char *conffile);
extern char *conf_get_program(char *conffile);
extern char *conf_line(FILE *file);
extern char *conf_word(FILE *file, int allow_key);
extern void free_line(char *line);
extern int match_oneof(char *devices, char *devname);
extern void uuid_from_super(int uuid[4], mdp_super_t *super);
extern int same_uuid(int a[4], int b[4], int swapuuid);
/* extern int compare_super(mdp_super_t *first, mdp_super_t *second);*/
extern unsigned long calc_csum(void *super, int bytes);
extern int enough(int level, int raid_disks, int layout,
		   char *avail, int avail_disks);
extern int ask(char *mesg);
extern unsigned long long get_component_size(int fd);


extern char *human_size(long long bytes);
char *human_size_brief(long long bytes);

extern void put_md_name(char *name);
extern char *get_md_name(int dev);

extern char DefaultConfFile[];

extern int open_mddev(char *dev, int autof);


#define	LEVEL_MULTIPATH		(-4)
#define	LEVEL_LINEAR		(-1)
#define	LEVEL_FAULTY		(-5)


/* faulty stuff */

#define	WriteTransient	0
#define	ReadTransient	1
#define	WritePersistent	2
#define	ReadPersistent	3
#define	WriteAll	4 /* doesn't go to device */
#define	ReadFixable	5
#define	Modes	6

#define	ClearErrors	31
#define	ClearFaults	30

#define AllPersist	100 /* internal use only */
#define	NoPersist	101

#define	ModeMask	0x1f
#define	ModeShift	5


#ifdef __TINYC__
#undef minor
#undef major
#undef makedev
#define minor(x) ((x)&0xff)
#define major(x) (((x)>>8)&0xff)
#define makedev(M,m) (((M)<<8) | (m))
#endif

/* for raid5 */
#define ALGORITHM_LEFT_ASYMMETRIC	0
#define ALGORITHM_RIGHT_ASYMMETRIC	1
#define ALGORITHM_LEFT_SYMMETRIC	2
#define ALGORITHM_RIGHT_SYMMETRIC	3
Commit	Line	Data
64c4757e	1	/*
9a9dab36	2	* mdadm - manage Linux "md" devices aka RAID arrays.
64c4757e	3	*
cd29a5c8	4	* Copyright (C) 2001-2002 Neil Brown <neilb@cse.unsw.edu.au>
64c4757e NB	5	*
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	20	*
	21	* Author: Neil Brown
	22	* Email: <neilb@cse.unsw.edu.au>
	23	* Paper: Neil Brown
	24	* School of Computer Science and Engineering
	25	* The University of New South Wales
	26	* Sydney, 2052
	27	* Australia
	28	*/
	29
4ccdb956	30	#define _GNU_SOURCE
64c4757e	31	#include <unistd.h>
98c6faba	32	#ifndef __dietlibc__
64c4757e	33	extern __off64_t lseek64 __P ((int __fd, __off64_t __offset, int __whence));
98c6faba	34	#endif
64c4757e NB	35
	36	#include <sys/types.h>
	37	#include <sys/stat.h>
	38	#include <stdlib.h>
	39	#include <time.h>
11018a45	40	#include <sys/time.h>
64c4757e NB	41	#include <getopt.h>
	42	#include <fcntl.h>
	43	#include <stdio.h>
	44	#include <errno.h>
	45	#include <string.h>
773135f5	46	#include <syslog.h>
98c6faba NB	47	#ifdef __dietlibc__NONO
	48	int strncmp(const char s1, const char s2, size_t n) __THROW __pure__;
	49	char strncpy(char dest, const char *src, size_t n) __THROW;
	50	#include <strings.h>
	51	#endif
	52
64c4757e NB	53
64c4757e NB	54	#include <linux/kdev_t.h>
e0d19036 NB	55	/#include <linux/fs.h> /
	56	#include <sys/mount.h>
	57	#include <asm/types.h>
64c4757e NB	58	#include <sys/ioctl.h>
64c4757e NB	59	#define MD_MAJOR 9
dd0781e5	60	#define MdpMinorShift 6
64c4757e	61
e0d19036	62	#ifndef BLKGETSIZE64
98c6faba	63	#define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size in bytes (u64 arg) /
e0d19036	64	#endif
56eb10c0	65
c82f047c NB	66	#define DEFAULT_BITMAP_CHUNK 4096
c82f047c NB	67	#define DEFAULT_BITMAP_DELAY 5
dfd4d8ee	68	#define DEFAULT_MAX_WRITE_BEHIND 256
64c4757e NB	69
64c4757e NB	70	#include "md_u.h"
e0d19036	71	#include "md_p.h"
c82f047c	72	#include "bitmap.h"
64c4757e	73
1e0d770c NB	74	#include <endian.h>
	75	/* #include "asm/byteorder.h" Redhat don't like this so... */
	76	#if __BYTE_ORDER == __LITTLE_ENDIAN
	77	# include <linux/byteorder/little_endian.h>
	78	#elif __BYTE_ORDER == __BIG_ENDIAN
	79	# include <linux/byteorder/big_endian.h>
	80	#elif __BYTE_ORDER == __PDP_ENDIAN
	81	# include <linux/byteorder/pdp_endian.h>
	82	#else
	83	# error "unknown endianness."
	84	#endif
	85
	86
	87
4b1ac34b NB	88	/* general information that might be extracted from a superblock */
	89	struct mdinfo {
	90	mdu_array_info_t array;
	91	mdu_disk_info_t disk;
	92	__u64 events;
fbf8a0b7	93	int uuid[4];
31317663	94	char name[33];
353632d9 NB	95	unsigned long long data_offset;
	96	unsigned long long component_size;
	97	int reshape_active;
	98	unsigned long long reshape_progress;
	99	int new_level, delta_disks, new_layout, new_chunk;
4b1ac34b NB	100	};
4b1ac34b NB	101
5bbb4842 NB	102	struct createinfo {
	103	int uid;
	104	int gid;
	105	int autof;
	106	int mode;
	107	};
	108
9a9dab36	109	#define Name "mdadm"
682c7051	110
e0d19036 NB	111	enum mode {
	112	ASSEMBLE=1,
	113	BUILD,
	114	CREATE,
	115	MANAGE,
	116	MISC,
	117	MONITOR,
dd0781e5	118	GROW,
e0d19036 NB	119	};
e0d19036 NB	120
64c4757e	121	extern char short_options[];
c06487ce	122	extern char short_bitmap_auto_options[];
64c4757e	123	extern struct option long_options[];
56eedc1a	124	extern char Version[], Usage[], Help[], OptionHelp[],
dd0781e5	125	Help_create[], Help_build[], Help_assemble[], Help_grow[],
e0d19036	126	Help_manage[], Help_misc[], Help_monitor[], Help_config[];
64c4757e NB	127
64c4757e NB	128	/* structures read from config file */
52826846 NB	129	/* List of mddevice names and identifiers
	130	* Identifiers can be:
	131	* uuid=128-hex-uuid
	132	* super-minor=decimal-minor-number-from-superblock
	133	* devices=comma,separated,list,of,device,names,with,wildcards
	134	*
	135	* If multiple fields are present, the intersection of all matching
	136	* devices is considered
	137	*/
98c6faba	138	#define UnSet (0xfffe)
52826846	139	typedef struct mddev_ident_s {
dd0781e5	140	char *devname;
52826846	141
dd0781e5	142	int uuid_set;
3fa06e9d	143	int uuid[4];
947fd4dd	144	char name[33];
52826846	145
98c6faba	146	unsigned int super_minor;
52826846	147
dd0781e5	148	char devices; / comma separated list of device
52826846 NB	149	* names with wild cards
52826846 NB	150	*/
dd0781e5	151	int level;
98c6faba NB	152	unsigned int raid_disks;
98c6faba NB	153	unsigned int spare_disks;
82d9eba6	154	struct supertype *st;
dd0781e5 NB	155	int autof; /* 1 for normal, 2 for partitioned */
dd0781e5 NB	156	char *spare_group;
7ef02d01	157	char *bitmap_file;
c82f047c	158	int bitmap_fd;
dd0781e5	159
52826846 NB	160	struct mddev_ident_s *next;
52826846 NB	161	} *mddev_ident_t;
64c4757e NB	162
	163	/* List of device names - wildcards expanded */
	164	typedef struct mddev_dev_s {
	165	char *devname;
cd29a5c8 NB	166	char disposition; /* 'a' for add, 'r' for remove, 'f' for fail.
	167	* Not set for names read from .config
	168	*/
dfd4d8ee	169	char writemostly;
fe80f49b	170	char re_add;
64c4757e NB	171	struct mddev_dev_s *next;
	172	} *mddev_dev_t;
	173
682c7051 NB	174	typedef struct mapping {
	175	char *name;
	176	int num;
	177	} mapping_t;
	178
e0d19036 NB	179
	180	struct mdstat_ent {
	181	char *dev;
	182	int devnum;
	183	int active;
	184	char *level;
	185	char pattern; / U or up, _ for down */
	186	int percent; /* -1 if no resync */
e5329c37	187	int resync; /* 1 if resync, 0 if recovery */
e0d19036 NB	188	struct mdstat_ent *next;
	189	};
	190
22a88995	191	extern struct mdstat_ent *mdstat_read(int hold, int start);
e0d19036	192	extern void free_mdstat(struct mdstat_ent *ms);
dd0781e5	193	extern void mdstat_wait(int seconds);
e0d19036	194
e86c9dd6 NB	195	/* Data structure for holding info read from sysfs */
	196	struct sysdev {
	197	char name[20];
	198	int role;
	199	int major, minor;
	200	unsigned long long offset, size;
	201	int state;
	202	int errors;
	203	struct sysdev *next;
	204	};
	205	struct sysarray {
	206	char name[20];
	207	struct sysdev *devs;
	208	int chunk;
	209	unsigned long long component_size;
	210	int layout;
	211	int level;
	212	int spares;
	213	};
	214	/* various details can be requested */
	215	#define GET_LEVEL 1
	216	#define GET_LAYOUT 2
	217	#define GET_COMPONENT 4
	218	#define GET_CHUNK 8
	219
	220	#define GET_DEVS 1024 /* gets role, major, minor */
	221	#define GET_OFFSET 2048
	222	#define GET_SIZE 4096
	223	#define GET_STATE 8192
	224	#define GET_ERROR 16384
	225
	226	/* If fd >= 0, get the array it is open on,
	227	* else use devnum. >=0 -> major9. <0.....
	228	*/
	229	extern struct sysarray *sysfs_read(int fd, int devnum, unsigned long options);
	230	extern int sysfs_set_str(struct sysarray sra, struct sysdev dev,
	231	char name, char val);
	232	extern int sysfs_set_num(struct sysarray sra, struct sysdev dev,
	233	char *name, unsigned long long val);
	234	extern int sysfs_get_ll(struct sysarray sra, struct sysdev dev,
	235	char name, unsigned long long val);
	236
	237
	238	extern int save_stripes(int source, unsigned long long offsets,
	239	int raid_disks, int chunk_size, int level, int layout,
	240	int nwrites, int *dest,
	241	unsigned long long start, unsigned long long length);
353632d9 NB	242	extern int restore_stripes(int dest, unsigned long long offsets,
	243	int raid_disks, int chunk_size, int level, int layout,
	244	int source, unsigned long long read_offset,
	245	unsigned long long start, unsigned long long length);
e86c9dd6	246
52826846 NB	247	#ifndef Sendmail
	248	#define Sendmail "/usr/lib/sendmail -t"
	249	#endif
	250
773135f5 NB	251	#define SYSLOG_FACILITY LOG_DAEMON
773135f5 NB	252
682c7051 NB	253	extern char map_num(mapping_t map, int num);
682c7051 NB	254	extern int map_name(mapping_t map, char name);
b5e64645	255	extern mapping_t r5layout[], pers[], modes[], faultylayout[];
682c7051	256
16c6fa80	257	extern char *map_dev(int major, int minor, int create);
64c4757e NB	258
64c4757e NB	259
f9ce90ba NB	260	extern struct superswitch {
	261	void (examine_super)(void sbv);
	262	void (brief_examine_super)(void sbv);
	263	void (detail_super)(void sbv);
	264	void (brief_detail_super)(void sbv);
	265	void (uuid_from_super)(int uuid[4], void sbv);
31317663	266	void (getinfo_super)(struct mdinfo info, void *sbv);
f9ce90ba NB	267	int (update_super)(struct mdinfo info, void sbv, char update, char *devname, int verbose);
f9ce90ba NB	268	__u64 (event_super)(void sbv);
5dd497ee	269	int (init_super)(struct supertype st, void *sbp, mdu_array_info_t info, unsigned long long size, char *name);
f9ce90ba	270	void (add_to_super)(void sbv, mdu_disk_info_t *dinfo);
96395475	271	int (store_super)(struct supertype st, int fd, void *sbv);
1bf4e2d9	272	int (write_init_super)(struct supertype st, void sbv, mdu_disk_info_t dinfo, char *devname);
f9ce90ba	273	int (compare_super)(void firstp, void secondv);
82d9eba6 NB	274	int (load_super)(struct supertype st, int fd, void *sbp, char devname);
82d9eba6 NB	275	struct supertype * (match_metadata_desc)(char arg);
1bf4e2d9	276	__u64 (avail_size)(struct supertype st, __u64 size);
f9c25f1d NB	277	int (add_internal_bitmap)(struct supertype st, void *sbv, int chunk, int delay, int write_behind,
f9c25f1d NB	278	unsigned long long size, int may_change, int major);
f6d75de8	279	void (locate_bitmap)(struct supertype st, int fd, void *sbv);
f5e166fe	280	int (write_bitmap)(struct supertype st, int fd, void *sbv);
82d9eba6	281	int major;
f277ce36	282	int swapuuid; /* true if uuid is bigending rather than hostendian */
82d9eba6 NB	283	} super0, super1, *superlist[];
	284
	285	struct supertype {
	286	struct superswitch *ss;
	287	int minor_version;
ea329559	288	int max_devs;
82d9eba6	289	};
f9ce90ba	290
82d9eba6 NB	291	extern struct supertype *super_by_version(int vers, int minor);
82d9eba6 NB	292	extern struct supertype *guess_super(int fd);
f9ce90ba	293
838acbc2 NB	294	#if __GNUC__ < 3
	295	struct stat64;
	296	#endif
	297
173fc515 NB	298	#ifdef UCLIBC
	299	struct FTW {};
	300	# define FTW_PHYS 1
	301	#else
173fc515 NB	302	# include <ftw.h>
	303	# ifdef __dietlibc__
	304	# define FTW_PHYS 1
	305	# endif
	306	#endif
	307
	308	extern int add_dev(const char name, const struct stat stb, int flag, struct FTW *s);
	309
f9ce90ba	310
64c4757e	311	extern int Manage_ro(char *devname, int fd, int readonly);
91f068bf	312	extern int Manage_runstop(char *devname, int fd, int runstop, int quiet);
dd0781e5	313	extern int Manage_resize(char *devname, int fd, long long size, int raid_disks);
b5e64645	314	extern int Manage_reconfig(char *devname, int fd, int layout);
64c4757e	315	extern int Manage_subdevs(char *devname, int fd,
dab6685f	316	mddev_dev_t devlist, int verbose);
e5329c37	317	extern int Grow_Add_device(char devname, int fd, char newdev);
8fac0577	318	extern int Grow_addbitmap(char devname, int fd, char file, int chunk, int delay, int write_behind, int force);
06b0d786	319	extern int Grow_reshape(char devname, int fd, int quiet, char backup_file,
e86c9dd6 NB	320	long long size,
e86c9dd6 NB	321	int level, int layout, int chunksize, int raid_disks);
06b0d786 NB	322	extern int Grow_restart(struct supertype st, struct mdinfo info,
06b0d786 NB	323	int fdlist, int cnt, char backup_file);
64c4757e NB	324
64c4757e NB	325
82d9eba6	326	extern int Assemble(struct supertype st, char mddev, int mdfd,
52826846 NB	327	mddev_ident_t ident,
52826846 NB	328	char *conffile,
06b0d786	329	mddev_dev_t devlist, char *backup_file,
64c4757e	330	int readonly, int runstop,
5787fa49	331	char *update,
64c4757e NB	332	int verbose, int force);
64c4757e NB	333
b5e64645	334	extern int Build(char *mddev, int mdfd, int chunk, int level, int layout,
64c4757e	335	int raiddisks,
c82f047c	336	mddev_dev_t devlist, int assume_clean,
dab6685f	337	char *bitmap_file, int bitmap_chunk, int write_behind, int delay, int verbose);
64c4757e NB	338
64c4757e NB	339
82d9eba6	340	extern int Create(struct supertype st, char mddev, int mdfd,
5dd497ee	341	int chunk, int level, int layout, unsigned long long size, int raiddisks, int sparedisks,
947fd4dd	342	char *name,
cd29a5c8	343	int subdevs, mddev_dev_t devlist,
47d79ef8	344	int runstop, int verbose, int force, int assume_clean,
dfd4d8ee	345	char *bitmap_file, int bitmap_chunk, int write_behind, int delay);
64c4757e	346
feb716e9	347	extern int Detail(char *dev, int brief, int test);
e0d19036	348	extern int Query(char *dev);
82d9eba6 NB	349	extern int Examine(mddev_dev_t devlist, int brief, int scan, int SparcAdjust,
82d9eba6 NB	350	struct supertype *forcest);
cd29a5c8	351	extern int Monitor(mddev_dev_t devlist,
e0d19036	352	char mailaddr, char alert_cmd,
aa88f531	353	int period, int daemonise, int scan, int oneshot,
773135f5	354	int dosyslog, char config, int test, char pidfile);
64c4757e	355
6409687b	356	extern int Kill(char *dev, int force, int quiet);
9a9dab36	357
c82f047c NB	358	extern int CreateBitmap(char *filename, int force, char uuid[16],
c82f047c NB	359	unsigned long chunksize, unsigned long daemon_sleep,
dfd4d8ee	360	unsigned long write_behind,
dcec9ee5 NB	361	unsigned long long array_size,
dcec9ee5 NB	362	int major);
55935d51	363	extern int ExamineBitmap(char filename, int brief, struct supertype st);
8131b493	364	extern void bitmap_update_uuid(int fd, int *uuid);
c82f047c	365
64c4757e	366	extern int md_get_version(int fd);
e0d19036	367	extern int get_linux_version(void);
64c4757e	368	extern int parse_uuid(char *str, int uuid[4]);
682c7051 NB	369	extern int check_ext2(int fd, char *name);
	370	extern int check_reiser(int fd, char *name);
	371	extern int check_raid(int fd, char *name);
64c4757e	372
dd0781e5	373	extern int get_mdp_major(void);
8b0dabea	374	extern int dev_open(char *dev, int flags);
8d80900b	375	extern int is_standard(char dev, int nump);
dd0781e5	376
5bbb4842	377	extern int parse_auto(char str, char msg);
e0d19036 NB	378	extern mddev_ident_t conf_get_ident(char conffile, char dev);
e0d19036 NB	379	extern mddev_dev_t conf_get_devs(char *conffile);
5bbb4842	380	extern struct createinfo conf_get_create_info(char conffile);
e0d19036	381	extern char conf_get_mailaddr(char conffile);
4948b8f7	382	extern char conf_get_mailfrom(char conffile);
e0d19036 NB	383	extern char conf_get_program(char conffile);
e0d19036 NB	384	extern char conf_line(FILE file);
98c6faba	385	extern char conf_word(FILE file, int allow_key);
e0d19036 NB	386	extern void free_line(char *line);
e0d19036 NB	387	extern int match_oneof(char devices, char devname);
e0d19036	388	extern void uuid_from_super(int uuid[4], mdp_super_t *super);
f277ce36	389	extern int same_uuid(int a[4], int b[4], int swapuuid);
4b1ac34b NB	390	/* extern int compare_super(mdp_super_t first, mdp_super_t second);*/
4b1ac34b NB	391	extern unsigned long calc_csum(void *super, int bytes);
265e0f17 NB	392	extern int enough(int level, int raid_disks, int layout,
265e0f17 NB	393	char *avail, int avail_disks);
e0d19036	394	extern int ask(char *mesg);
8fac0577	395	extern unsigned long long get_component_size(int fd);
e0d19036	396
cd29a5c8	397
56eb10c0	398	extern char *human_size(long long bytes);
e0d19036 NB	399	char *human_size_brief(long long bytes);
	400
	401	extern void put_md_name(char *name);
	402	extern char *get_md_name(int dev);
	403
c913b90e	404	extern char DefaultConfFile[];
b5e64645 NB	405
	406	extern int open_mddev(char *dev, int autof);
	407
	408
	409	#define LEVEL_MULTIPATH (-4)
	410	#define LEVEL_LINEAR (-1)
	411	#define LEVEL_FAULTY (-5)
	412
	413
	414	/* faulty stuff */
	415
	416	#define WriteTransient 0
	417	#define ReadTransient 1
	418	#define WritePersistent 2
	419	#define ReadPersistent 3
	420	#define WriteAll 4 /* doesn't go to device */
	421	#define ReadFixable 5
	422	#define Modes 6
	423
	424	#define ClearErrors 31
	425	#define ClearFaults 30
	426
	427	#define AllPersist 100 /* internal use only */
	428	#define NoPersist 101
	429
	430	#define ModeMask 0x1f
	431	#define ModeShift 5
fe6729fa NB	432
	433
	434	#ifdef __TINYC__
	435	#undef minor
	436	#undef major
	437	#undef makedev
	438	#define minor(x) ((x)&0xff)
	439	#define major(x) (((x)>>8)&0xff)
	440	#define makedev(M,m) (((M)<<8) \| (m))
	441	#endif
	442
e86c9dd6 NB	443	/* for raid5 */
	444	#define ALGORITHM_LEFT_ASYMMETRIC 0
	445	#define ALGORITHM_RIGHT_ASYMMETRIC 1
	446	#define ALGORITHM_LEFT_SYMMETRIC 2
	447	#define ALGORITHM_RIGHT_SYMMETRIC 3