[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];

	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;
	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, 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);
	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)(__u64 size);
	int (*add_internal_bitmap)(void *sbv, int chunk, int delay, int write_behind, unsigned long long size);
	void (*locate_bitmap)(struct supertype *st, int fd);
	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);
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);


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