[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	__USE_LARGEFILE64
#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>
#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"

/* 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];
};

#define Name "mdadm"

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

extern char short_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;
	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);
extern void free_mdstat(struct mdstat_ent *ms);
extern void mdstat_wait(int seconds);

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

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);


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, mddev_ident_t ident, 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, 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);

#ifdef UCLIBC
  struct FTW {};
# define FTW_PHYS 1
#else
# define  __USE_XOPEN_EXTENDED
# 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);


extern int Assemble(struct supertype *st, char *mddev, int mdfd,
		    mddev_ident_t ident,
		    char *conffile,
		    mddev_dev_t devlist,
		    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 size, int raiddisks, int sparedisks,
		  char *name,
		  int subdevs, mddev_dev_t devlist,
		  int runstop, int verbose, int force,
		  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,
		   char *config, int test, char *pidfile);

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

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 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 mddev_ident_t conf_get_ident(char *conffile, char *dev);
extern mddev_dev_t conf_get_devs(char *conffile);
extern char *conf_get_mailaddr(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 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
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
	30	#define __USE_LARGEFILE64
	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>
98c6faba NB	46	#ifdef __dietlibc__NONO
	47	int strncmp(const char s1, const char s2, size_t n) __THROW __pure__;
	48	char strncpy(char dest, const char *src, size_t n) __THROW;
	49	#include <strings.h>
	50	#endif
	51
64c4757e NB	52
64c4757e NB	53	#include <linux/kdev_t.h>
e0d19036 NB	54	/#include <linux/fs.h> /
	55	#include <sys/mount.h>
	56	#include <asm/types.h>
64c4757e NB	57	#include <sys/ioctl.h>
64c4757e NB	58	#define MD_MAJOR 9
dd0781e5	59	#define MdpMinorShift 6
64c4757e	60
e0d19036	61	#ifndef BLKGETSIZE64
98c6faba	62	#define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size in bytes (u64 arg) /
e0d19036	63	#endif
56eb10c0	64
c82f047c NB	65	#define DEFAULT_BITMAP_CHUNK 4096
c82f047c NB	66	#define DEFAULT_BITMAP_DELAY 5
dfd4d8ee	67	#define DEFAULT_MAX_WRITE_BEHIND 256
64c4757e NB	68
64c4757e NB	69	#include "md_u.h"
e0d19036	70	#include "md_p.h"
c82f047c	71	#include "bitmap.h"
64c4757e	72
4b1ac34b NB	73	/* general information that might be extracted from a superblock */
	74	struct mdinfo {
	75	mdu_array_info_t array;
	76	mdu_disk_info_t disk;
	77	__u64 events;
fbf8a0b7	78	int uuid[4];
4b1ac34b NB	79	};
4b1ac34b NB	80
9a9dab36	81	#define Name "mdadm"
682c7051	82
e0d19036 NB	83	enum mode {
	84	ASSEMBLE=1,
	85	BUILD,
	86	CREATE,
	87	MANAGE,
	88	MISC,
	89	MONITOR,
dd0781e5	90	GROW,
e0d19036 NB	91	};
e0d19036 NB	92
64c4757e NB	93	extern char short_options[];
64c4757e NB	94	extern struct option long_options[];
56eedc1a	95	extern char Version[], Usage[], Help[], OptionHelp[],
dd0781e5	96	Help_create[], Help_build[], Help_assemble[], Help_grow[],
e0d19036	97	Help_manage[], Help_misc[], Help_monitor[], Help_config[];
64c4757e NB	98
64c4757e NB	99	/* structures read from config file */
52826846 NB	100	/* List of mddevice names and identifiers
	101	* Identifiers can be:
	102	* uuid=128-hex-uuid
	103	* super-minor=decimal-minor-number-from-superblock
	104	* devices=comma,separated,list,of,device,names,with,wildcards
	105	*
	106	* If multiple fields are present, the intersection of all matching
	107	* devices is considered
	108	*/
98c6faba	109	#define UnSet (0xfffe)
52826846	110	typedef struct mddev_ident_s {
dd0781e5	111	char *devname;
52826846	112
dd0781e5	113	int uuid_set;
3fa06e9d	114	int uuid[4];
947fd4dd	115	char name[33];
52826846	116
98c6faba	117	unsigned int super_minor;
52826846	118
dd0781e5	119	char devices; / comma separated list of device
52826846 NB	120	* names with wild cards
52826846 NB	121	*/
dd0781e5	122	int level;
98c6faba NB	123	unsigned int raid_disks;
98c6faba NB	124	unsigned int spare_disks;
82d9eba6	125	struct supertype *st;
dd0781e5 NB	126	int autof; /* 1 for normal, 2 for partitioned */
dd0781e5 NB	127	char *spare_group;
c82f047c	128	int bitmap_fd;
dd0781e5	129
52826846 NB	130	struct mddev_ident_s *next;
52826846 NB	131	} *mddev_ident_t;
64c4757e NB	132
	133	/* List of device names - wildcards expanded */
	134	typedef struct mddev_dev_s {
	135	char *devname;
cd29a5c8 NB	136	char disposition; /* 'a' for add, 'r' for remove, 'f' for fail.
	137	* Not set for names read from .config
	138	*/
dfd4d8ee	139	char writemostly;
fe80f49b	140	char re_add;
64c4757e NB	141	struct mddev_dev_s *next;
	142	} *mddev_dev_t;
	143
682c7051 NB	144	typedef struct mapping {
	145	char *name;
	146	int num;
	147	} mapping_t;
	148
e0d19036 NB	149
	150	struct mdstat_ent {
	151	char *dev;
	152	int devnum;
	153	int active;
	154	char *level;
	155	char pattern; / U or up, _ for down */
	156	int percent; /* -1 if no resync */
e5329c37	157	int resync; /* 1 if resync, 0 if recovery */
e0d19036 NB	158	struct mdstat_ent *next;
	159	};
	160
dd0781e5	161	extern struct mdstat_ent *mdstat_read(int);
e0d19036	162	extern void free_mdstat(struct mdstat_ent *ms);
dd0781e5	163	extern void mdstat_wait(int seconds);
e0d19036	164
52826846 NB	165	#ifndef Sendmail
	166	#define Sendmail "/usr/lib/sendmail -t"
	167	#endif
	168
682c7051 NB	169	extern char map_num(mapping_t map, int num);
682c7051 NB	170	extern int map_name(mapping_t map, char name);
b5e64645	171	extern mapping_t r5layout[], pers[], modes[], faultylayout[];
682c7051	172
82b27616	173	extern char *map_dev(int major, int minor);
64c4757e NB	174
64c4757e NB	175
f9ce90ba NB	176	extern struct superswitch {
	177	void (examine_super)(void sbv);
	178	void (brief_examine_super)(void sbv);
	179	void (detail_super)(void sbv);
	180	void (brief_detail_super)(void sbv);
	181	void (uuid_from_super)(int uuid[4], void sbv);
947fd4dd	182	void (getinfo_super)(struct mdinfo info, mddev_ident_t ident, void *sbv);
f9ce90ba NB	183	int (update_super)(struct mdinfo info, void sbv, char update, char *devname, int verbose);
f9ce90ba NB	184	__u64 (event_super)(void sbv);
947fd4dd	185	int (init_super)(struct supertype st, void *sbp, mdu_array_info_t info, char *name);
f9ce90ba	186	void (add_to_super)(void sbv, mdu_disk_info_t *dinfo);
96395475	187	int (store_super)(struct supertype st, int fd, void *sbv);
1bf4e2d9	188	int (write_init_super)(struct supertype st, void sbv, mdu_disk_info_t dinfo, char *devname);
f9ce90ba	189	int (compare_super)(void firstp, void secondv);
82d9eba6 NB	190	int (load_super)(struct supertype st, int fd, void *sbp, char devname);
82d9eba6 NB	191	struct supertype * (match_metadata_desc)(char arg);
1bf4e2d9	192	__u64 (avail_size)(struct supertype st, __u64 size);
f9c25f1d NB	193	int (add_internal_bitmap)(struct supertype st, void *sbv, int chunk, int delay, int write_behind,
f9c25f1d NB	194	unsigned long long size, int may_change, int major);
f6d75de8	195	void (locate_bitmap)(struct supertype st, int fd, void *sbv);
f5e166fe	196	int (write_bitmap)(struct supertype st, int fd, void *sbv);
82d9eba6	197	int major;
f277ce36	198	int swapuuid; /* true if uuid is bigending rather than hostendian */
82d9eba6 NB	199	} super0, super1, *superlist[];
	200
	201	struct supertype {
	202	struct superswitch *ss;
	203	int minor_version;
ea329559	204	int max_devs;
82d9eba6	205	};
f9ce90ba	206
82d9eba6 NB	207	extern struct supertype *super_by_version(int vers, int minor);
82d9eba6 NB	208	extern struct supertype *guess_super(int fd);
f9ce90ba	209
173fc515 NB	210	#ifdef UCLIBC
	211	struct FTW {};
	212	# define FTW_PHYS 1
	213	#else
	214	# define __USE_XOPEN_EXTENDED
	215	# include <ftw.h>
	216	# ifdef __dietlibc__
	217	# define FTW_PHYS 1
	218	# endif
	219	#endif
	220
	221	extern int add_dev(const char name, const struct stat stb, int flag, struct FTW *s);
	222
f9ce90ba	223
64c4757e	224	extern int Manage_ro(char *devname, int fd, int readonly);
91f068bf	225	extern int Manage_runstop(char *devname, int fd, int runstop, int quiet);
dd0781e5	226	extern int Manage_resize(char *devname, int fd, long long size, int raid_disks);
b5e64645	227	extern int Manage_reconfig(char *devname, int fd, int layout);
64c4757e	228	extern int Manage_subdevs(char *devname, int fd,
dab6685f	229	mddev_dev_t devlist, int verbose);
e5329c37	230	extern int Grow_Add_device(char devname, int fd, char newdev);
dfd4d8ee	231	extern int Grow_addbitmap(char devname, int fd, char file, int chunk, int delay, int write_behind);
64c4757e NB	232
64c4757e NB	233
82d9eba6	234	extern int Assemble(struct supertype st, char mddev, int mdfd,
52826846 NB	235	mddev_ident_t ident,
52826846 NB	236	char *conffile,
cd29a5c8	237	mddev_dev_t devlist,
64c4757e	238	int readonly, int runstop,
5787fa49	239	char *update,
64c4757e NB	240	int verbose, int force);
64c4757e NB	241
b5e64645	242	extern int Build(char *mddev, int mdfd, int chunk, int level, int layout,
64c4757e	243	int raiddisks,
c82f047c	244	mddev_dev_t devlist, int assume_clean,
dab6685f	245	char *bitmap_file, int bitmap_chunk, int write_behind, int delay, int verbose);
64c4757e NB	246
64c4757e NB	247
82d9eba6	248	extern int Create(struct supertype st, char mddev, int mdfd,
aa88f531	249	int chunk, int level, int layout, unsigned long size, int raiddisks, int sparedisks,
947fd4dd	250	char *name,
cd29a5c8	251	int subdevs, mddev_dev_t devlist,
c82f047c	252	int runstop, int verbose, int force,
dfd4d8ee	253	char *bitmap_file, int bitmap_chunk, int write_behind, int delay);
64c4757e	254
feb716e9	255	extern int Detail(char *dev, int brief, int test);
e0d19036	256	extern int Query(char *dev);
82d9eba6 NB	257	extern int Examine(mddev_dev_t devlist, int brief, int scan, int SparcAdjust,
82d9eba6 NB	258	struct supertype *forcest);
cd29a5c8	259	extern int Monitor(mddev_dev_t devlist,
e0d19036	260	char mailaddr, char alert_cmd,
aa88f531	261	int period, int daemonise, int scan, int oneshot,
b5e64645	262	char config, int test, char pidfile);
64c4757e	263
9a9dab36 NB	264	extern int Kill(char *dev, int force);
9a9dab36 NB	265
c82f047c NB	266	extern int CreateBitmap(char *filename, int force, char uuid[16],
c82f047c NB	267	unsigned long chunksize, unsigned long daemon_sleep,
dfd4d8ee	268	unsigned long write_behind,
dcec9ee5 NB	269	unsigned long long array_size,
dcec9ee5 NB	270	int major);
55935d51	271	extern int ExamineBitmap(char filename, int brief, struct supertype st);
c82f047c	272
64c4757e	273	extern int md_get_version(int fd);
e0d19036	274	extern int get_linux_version(void);
64c4757e	275	extern int parse_uuid(char *str, int uuid[4]);
682c7051 NB	276	extern int check_ext2(int fd, char *name);
	277	extern int check_reiser(int fd, char *name);
	278	extern int check_raid(int fd, char *name);
64c4757e	279
dd0781e5	280	extern int get_mdp_major(void);
8b0dabea	281	extern int dev_open(char *dev, int flags);
8d80900b	282	extern int is_standard(char dev, int nump);
dd0781e5 NB	283
dd0781e5 NB	284
e0d19036 NB	285	extern mddev_ident_t conf_get_ident(char conffile, char dev);
	286	extern mddev_dev_t conf_get_devs(char *conffile);
	287	extern char conf_get_mailaddr(char conffile);
	288	extern char conf_get_program(char conffile);
	289	extern char conf_line(FILE file);
98c6faba	290	extern char conf_word(FILE file, int allow_key);
e0d19036 NB	291	extern void free_line(char *line);
e0d19036 NB	292	extern int match_oneof(char devices, char devname);
e0d19036	293	extern void uuid_from_super(int uuid[4], mdp_super_t *super);
f277ce36	294	extern int same_uuid(int a[4], int b[4], int swapuuid);
4b1ac34b NB	295	/* extern int compare_super(mdp_super_t first, mdp_super_t second);*/
4b1ac34b NB	296	extern unsigned long calc_csum(void *super, int bytes);
265e0f17 NB	297	extern int enough(int level, int raid_disks, int layout,
265e0f17 NB	298	char *avail, int avail_disks);
e0d19036 NB	299	extern int ask(char *mesg);
e0d19036 NB	300
cd29a5c8	301
56eb10c0	302	extern char *human_size(long long bytes);
e0d19036 NB	303	char *human_size_brief(long long bytes);
	304
	305	extern void put_md_name(char *name);
	306	extern char *get_md_name(int dev);
	307
c913b90e	308	extern char DefaultConfFile[];
b5e64645 NB	309
	310	extern int open_mddev(char *dev, int autof);
	311
	312
	313	#define LEVEL_MULTIPATH (-4)
	314	#define LEVEL_LINEAR (-1)
	315	#define LEVEL_FAULTY (-5)
	316
	317
	318	/* faulty stuff */
	319
	320	#define WriteTransient 0
	321	#define ReadTransient 1
	322	#define WritePersistent 2
	323	#define ReadPersistent 3
	324	#define WriteAll 4 /* doesn't go to device */
	325	#define ReadFixable 5
	326	#define Modes 6
	327
	328	#define ClearErrors 31
	329	#define ClearFaults 30
	330
	331	#define AllPersist 100 /* internal use only */
	332	#define NoPersist 101
	333
	334	#define ModeMask 0x1f
	335	#define ModeShift 5
fe6729fa NB	336
	337
	338	#ifdef __TINYC__
	339	#undef minor
	340	#undef major
	341	#undef makedev
	342	#define minor(x) ((x)&0xff)
	343	#define major(x) (((x)>>8)&0xff)
	344	#define makedev(M,m) (((M)<<8) \| (m))
	345	#endif
	346