[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 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;
	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	93	extern char short_options[];
c06487ce	94	extern char short_bitmap_auto_options[];
64c4757e	95	extern struct option long_options[];
56eedc1a	96	extern char Version[], Usage[], Help[], OptionHelp[],
dd0781e5	97	Help_create[], Help_build[], Help_assemble[], Help_grow[],
e0d19036	98	Help_manage[], Help_misc[], Help_monitor[], Help_config[];
64c4757e NB	99
64c4757e NB	100	/* structures read from config file */
52826846 NB	101	/* List of mddevice names and identifiers
	102	* Identifiers can be:
	103	* uuid=128-hex-uuid
	104	* super-minor=decimal-minor-number-from-superblock
	105	* devices=comma,separated,list,of,device,names,with,wildcards
	106	*
	107	* If multiple fields are present, the intersection of all matching
	108	* devices is considered
	109	*/
98c6faba	110	#define UnSet (0xfffe)
52826846	111	typedef struct mddev_ident_s {
dd0781e5	112	char *devname;
52826846	113
dd0781e5	114	int uuid_set;
3fa06e9d	115	int uuid[4];
947fd4dd	116	char name[33];
52826846	117
98c6faba	118	unsigned int super_minor;
52826846	119
dd0781e5	120	char devices; / comma separated list of device
52826846 NB	121	* names with wild cards
52826846 NB	122	*/
dd0781e5	123	int level;
98c6faba NB	124	unsigned int raid_disks;
98c6faba NB	125	unsigned int spare_disks;
82d9eba6	126	struct supertype *st;
dd0781e5 NB	127	int autof; /* 1 for normal, 2 for partitioned */
dd0781e5 NB	128	char *spare_group;
c82f047c	129	int bitmap_fd;
dd0781e5	130
52826846 NB	131	struct mddev_ident_s *next;
52826846 NB	132	} *mddev_ident_t;
64c4757e NB	133
	134	/* List of device names - wildcards expanded */
	135	typedef struct mddev_dev_s {
	136	char *devname;
cd29a5c8 NB	137	char disposition; /* 'a' for add, 'r' for remove, 'f' for fail.
	138	* Not set for names read from .config
	139	*/
dfd4d8ee	140	char writemostly;
fe80f49b	141	char re_add;
64c4757e NB	142	struct mddev_dev_s *next;
	143	} *mddev_dev_t;
	144
682c7051 NB	145	typedef struct mapping {
	146	char *name;
	147	int num;
	148	} mapping_t;
	149
e0d19036 NB	150
	151	struct mdstat_ent {
	152	char *dev;
	153	int devnum;
	154	int active;
	155	char *level;
	156	char pattern; / U or up, _ for down */
	157	int percent; /* -1 if no resync */
e5329c37	158	int resync; /* 1 if resync, 0 if recovery */
e0d19036 NB	159	struct mdstat_ent *next;
	160	};
	161
dd0781e5	162	extern struct mdstat_ent *mdstat_read(int);
e0d19036	163	extern void free_mdstat(struct mdstat_ent *ms);
dd0781e5	164	extern void mdstat_wait(int seconds);
e0d19036	165
52826846 NB	166	#ifndef Sendmail
	167	#define Sendmail "/usr/lib/sendmail -t"
	168	#endif
	169
682c7051 NB	170	extern char map_num(mapping_t map, int num);
682c7051 NB	171	extern int map_name(mapping_t map, char name);
b5e64645	172	extern mapping_t r5layout[], pers[], modes[], faultylayout[];
682c7051	173
82b27616	174	extern char *map_dev(int major, int minor);
64c4757e NB	175
64c4757e NB	176
f9ce90ba NB	177	extern struct superswitch {
	178	void (examine_super)(void sbv);
	179	void (brief_examine_super)(void sbv);
	180	void (detail_super)(void sbv);
	181	void (brief_detail_super)(void sbv);
	182	void (uuid_from_super)(int uuid[4], void sbv);
947fd4dd	183	void (getinfo_super)(struct mdinfo info, mddev_ident_t ident, void *sbv);
f9ce90ba NB	184	int (update_super)(struct mdinfo info, void sbv, char update, char *devname, int verbose);
f9ce90ba NB	185	__u64 (event_super)(void sbv);
947fd4dd	186	int (init_super)(struct supertype st, void *sbp, mdu_array_info_t info, char *name);
f9ce90ba	187	void (add_to_super)(void sbv, mdu_disk_info_t *dinfo);
96395475	188	int (store_super)(struct supertype st, int fd, void *sbv);
1bf4e2d9	189	int (write_init_super)(struct supertype st, void sbv, mdu_disk_info_t dinfo, char *devname);
f9ce90ba	190	int (compare_super)(void firstp, void secondv);
82d9eba6 NB	191	int (load_super)(struct supertype st, int fd, void *sbp, char devname);
82d9eba6 NB	192	struct supertype * (match_metadata_desc)(char arg);
1bf4e2d9	193	__u64 (avail_size)(struct supertype st, __u64 size);
f9c25f1d NB	194	int (add_internal_bitmap)(struct supertype st, void *sbv, int chunk, int delay, int write_behind,
f9c25f1d NB	195	unsigned long long size, int may_change, int major);
f6d75de8	196	void (locate_bitmap)(struct supertype st, int fd, void *sbv);
f5e166fe	197	int (write_bitmap)(struct supertype st, int fd, void *sbv);
82d9eba6	198	int major;
f277ce36	199	int swapuuid; /* true if uuid is bigending rather than hostendian */
82d9eba6 NB	200	} super0, super1, *superlist[];
	201
	202	struct supertype {
	203	struct superswitch *ss;
	204	int minor_version;
ea329559	205	int max_devs;
82d9eba6	206	};
f9ce90ba	207
82d9eba6 NB	208	extern struct supertype *super_by_version(int vers, int minor);
82d9eba6 NB	209	extern struct supertype *guess_super(int fd);
f9ce90ba	210
173fc515 NB	211	#ifdef UCLIBC
	212	struct FTW {};
	213	# define FTW_PHYS 1
	214	#else
	215	# define __USE_XOPEN_EXTENDED
	216	# include <ftw.h>
	217	# ifdef __dietlibc__
	218	# define FTW_PHYS 1
	219	# endif
	220	#endif
	221
	222	extern int add_dev(const char name, const struct stat stb, int flag, struct FTW *s);
	223
f9ce90ba	224
64c4757e	225	extern int Manage_ro(char *devname, int fd, int readonly);
91f068bf	226	extern int Manage_runstop(char *devname, int fd, int runstop, int quiet);
dd0781e5	227	extern int Manage_resize(char *devname, int fd, long long size, int raid_disks);
b5e64645	228	extern int Manage_reconfig(char *devname, int fd, int layout);
64c4757e	229	extern int Manage_subdevs(char *devname, int fd,
dab6685f	230	mddev_dev_t devlist, int verbose);
e5329c37	231	extern int Grow_Add_device(char devname, int fd, char newdev);
dfd4d8ee	232	extern int Grow_addbitmap(char devname, int fd, char file, int chunk, int delay, int write_behind);
64c4757e NB	233
64c4757e NB	234
82d9eba6	235	extern int Assemble(struct supertype st, char mddev, int mdfd,
52826846 NB	236	mddev_ident_t ident,
52826846 NB	237	char *conffile,
cd29a5c8	238	mddev_dev_t devlist,
64c4757e	239	int readonly, int runstop,
5787fa49	240	char *update,
64c4757e NB	241	int verbose, int force);
64c4757e NB	242
b5e64645	243	extern int Build(char *mddev, int mdfd, int chunk, int level, int layout,
64c4757e	244	int raiddisks,
c82f047c	245	mddev_dev_t devlist, int assume_clean,
dab6685f	246	char *bitmap_file, int bitmap_chunk, int write_behind, int delay, int verbose);
64c4757e NB	247
64c4757e NB	248
82d9eba6	249	extern int Create(struct supertype st, char mddev, int mdfd,
aa88f531	250	int chunk, int level, int layout, unsigned long size, int raiddisks, int sparedisks,
947fd4dd	251	char *name,
cd29a5c8	252	int subdevs, mddev_dev_t devlist,
c82f047c	253	int runstop, int verbose, int force,
dfd4d8ee	254	char *bitmap_file, int bitmap_chunk, int write_behind, int delay);
64c4757e	255
feb716e9	256	extern int Detail(char *dev, int brief, int test);
e0d19036	257	extern int Query(char *dev);
82d9eba6 NB	258	extern int Examine(mddev_dev_t devlist, int brief, int scan, int SparcAdjust,
82d9eba6 NB	259	struct supertype *forcest);
cd29a5c8	260	extern int Monitor(mddev_dev_t devlist,
e0d19036	261	char mailaddr, char alert_cmd,
aa88f531	262	int period, int daemonise, int scan, int oneshot,
b5e64645	263	char config, int test, char pidfile);
64c4757e	264
9a9dab36 NB	265	extern int Kill(char *dev, int force);
9a9dab36 NB	266
c82f047c NB	267	extern int CreateBitmap(char *filename, int force, char uuid[16],
c82f047c NB	268	unsigned long chunksize, unsigned long daemon_sleep,
dfd4d8ee	269	unsigned long write_behind,
dcec9ee5 NB	270	unsigned long long array_size,
dcec9ee5 NB	271	int major);
55935d51	272	extern int ExamineBitmap(char filename, int brief, struct supertype st);
c82f047c	273
64c4757e	274	extern int md_get_version(int fd);
e0d19036	275	extern int get_linux_version(void);
64c4757e	276	extern int parse_uuid(char *str, int uuid[4]);
682c7051 NB	277	extern int check_ext2(int fd, char *name);
	278	extern int check_reiser(int fd, char *name);
	279	extern int check_raid(int fd, char *name);
64c4757e	280
dd0781e5	281	extern int get_mdp_major(void);
8b0dabea	282	extern int dev_open(char *dev, int flags);
8d80900b	283	extern int is_standard(char dev, int nump);
dd0781e5 NB	284
dd0781e5 NB	285
e0d19036 NB	286	extern mddev_ident_t conf_get_ident(char conffile, char dev);
	287	extern mddev_dev_t conf_get_devs(char *conffile);
	288	extern char conf_get_mailaddr(char conffile);
	289	extern char conf_get_program(char conffile);
	290	extern char conf_line(FILE file);
98c6faba	291	extern char conf_word(FILE file, int allow_key);
e0d19036 NB	292	extern void free_line(char *line);
e0d19036 NB	293	extern int match_oneof(char devices, char devname);
e0d19036	294	extern void uuid_from_super(int uuid[4], mdp_super_t *super);
f277ce36	295	extern int same_uuid(int a[4], int b[4], int swapuuid);
4b1ac34b NB	296	/* extern int compare_super(mdp_super_t first, mdp_super_t second);*/
4b1ac34b NB	297	extern unsigned long calc_csum(void *super, int bytes);
265e0f17 NB	298	extern int enough(int level, int raid_disks, int layout,
265e0f17 NB	299	char *avail, int avail_disks);
e0d19036 NB	300	extern int ask(char *mesg);
e0d19036 NB	301
cd29a5c8	302
56eb10c0	303	extern char *human_size(long long bytes);
e0d19036 NB	304	char *human_size_brief(long long bytes);
	305
	306	extern void put_md_name(char *name);
	307	extern char *get_md_name(int dev);
	308
c913b90e	309	extern char DefaultConfFile[];
b5e64645 NB	310
	311	extern int open_mddev(char *dev, int autof);
	312
	313
	314	#define LEVEL_MULTIPATH (-4)
	315	#define LEVEL_LINEAR (-1)
	316	#define LEVEL_FAULTY (-5)
	317
	318
	319	/* faulty stuff */
	320
	321	#define WriteTransient 0
	322	#define ReadTransient 1
	323	#define WritePersistent 2
	324	#define ReadPersistent 3
	325	#define WriteAll 4 /* doesn't go to device */
	326	#define ReadFixable 5
	327	#define Modes 6
	328
	329	#define ClearErrors 31
	330	#define ClearFaults 30
	331
	332	#define AllPersist 100 /* internal use only */
	333	#define NoPersist 101
	334
	335	#define ModeMask 0x1f
	336	#define ModeShift 5
fe6729fa NB	337
	338
	339	#ifdef __TINYC__
	340	#undef minor
	341	#undef major
	342	#undef makedev
	343	#define minor(x) ((x)&0xff)
	344	#define major(x) (((x)>>8)&0xff)
	345	#define makedev(M,m) (((M)<<8) \| (m))
	346	#endif
	347