[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	<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

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


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

#define Name "mdadm"

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

extern char short_options[];
extern struct option long_options[];
extern char Version[], Usage[], Help[], OptionHelp[],
	Help_create[], Help_build[], Help_assemble[],
	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;
	__u32 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;
	char *spare_group;
	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
				 */
	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 */
	struct mdstat_ent *next;
};

extern struct mdstat_ent *mdstat_read(void);
extern void free_mdstat(struct mdstat_ent *ms);

#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[];

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


extern int Manage_ro(char *devname, int fd, int readonly);
extern int Manage_runstop(char *devname, int fd, int runstop);
extern int Manage_subdevs(char *devname, int fd,
			  mddev_dev_t devlist);


extern int Assemble(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 raiddisks,
		 mddev_dev_t devlist);


extern int Create(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);

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);
extern int Monitor(mddev_dev_t devlist,
		   char *mailaddr, char *alert_cmd,
		   int period, int daemonise, int scan, int oneshot,
		   char *config, int test);

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

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 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 int load_super(int fd, mdp_super_t *super);
extern void uuid_from_super(int uuid[4], mdp_super_t *super);
extern int same_uuid(int a[4], int b[4]);
extern int compare_super(mdp_super_t *first, mdp_super_t *second);
extern unsigned long calc_sb_csum(mdp_super_t *super);
extern int store_super(int fd, mdp_super_t *super);
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[];
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>
	40	#include <getopt.h>
	41	#include <fcntl.h>
	42	#include <stdio.h>
	43	#include <errno.h>
	44	#include <string.h>
98c6faba NB	45	#ifdef __dietlibc__NONO
	46	int strncmp(const char s1, const char s2, size_t n) __THROW __pure__;
	47	char strncpy(char dest, const char *src, size_t n) __THROW;
	48	#include <strings.h>
	49	#endif
	50
64c4757e NB	51
64c4757e NB	52	#include <linux/kdev_t.h>
e0d19036 NB	53	/#include <linux/fs.h> /
	54	#include <sys/mount.h>
	55	#include <asm/types.h>
64c4757e NB	56	#include <sys/ioctl.h>
	57	#define MD_MAJOR 9
	58
e0d19036	59	#ifndef BLKGETSIZE64
98c6faba	60	#define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size in bytes (u64 arg) /
e0d19036	61	#endif
56eb10c0	62
64c4757e NB	63
64c4757e NB	64	#include "md_u.h"
e0d19036	65	#include "md_p.h"
64c4757e	66
9a9dab36	67	#define Name "mdadm"
682c7051	68
e0d19036 NB	69	enum mode {
	70	ASSEMBLE=1,
	71	BUILD,
	72	CREATE,
	73	MANAGE,
	74	MISC,
	75	MONITOR,
	76	};
	77
64c4757e NB	78	extern char short_options[];
64c4757e NB	79	extern struct option long_options[];
56eedc1a	80	extern char Version[], Usage[], Help[], OptionHelp[],
e0d19036 NB	81	Help_create[], Help_build[], Help_assemble[],
e0d19036 NB	82	Help_manage[], Help_misc[], Help_monitor[], Help_config[];
64c4757e NB	83
64c4757e NB	84	/* structures read from config file */
52826846 NB	85	/* List of mddevice names and identifiers
	86	* Identifiers can be:
	87	* uuid=128-hex-uuid
	88	* super-minor=decimal-minor-number-from-superblock
	89	* devices=comma,separated,list,of,device,names,with,wildcards
	90	*
	91	* If multiple fields are present, the intersection of all matching
	92	* devices is considered
	93	*/
98c6faba	94	#define UnSet (0xfffe)
52826846	95	typedef struct mddev_ident_s {
64c4757e	96	char *devname;
52826846 NB	97
52826846 NB	98	int uuid_set;
64c4757e	99	__u32 uuid[4];
52826846	100
98c6faba	101	unsigned int super_minor;
52826846 NB	102
	103	char devices; / comma separated list of device
	104	* names with wild cards
	105	*/
98c6faba NB	106	int level;
	107	unsigned int raid_disks;
	108	unsigned int spare_disks;
52826846 NB	109	char *spare_group;
	110	struct mddev_ident_s *next;
	111	} *mddev_ident_t;
64c4757e NB	112
	113	/* List of device names - wildcards expanded */
	114	typedef struct mddev_dev_s {
	115	char *devname;
cd29a5c8 NB	116	char disposition; /* 'a' for add, 'r' for remove, 'f' for fail.
	117	* Not set for names read from .config
	118	*/
64c4757e NB	119	struct mddev_dev_s *next;
	120	} *mddev_dev_t;
	121
682c7051 NB	122	typedef struct mapping {
	123	char *name;
	124	int num;
	125	} mapping_t;
	126
e0d19036 NB	127
	128	struct mdstat_ent {
	129	char *dev;
	130	int devnum;
	131	int active;
	132	char *level;
	133	char pattern; / U or up, _ for down */
	134	int percent; /* -1 if no resync */
	135	struct mdstat_ent *next;
	136	};
	137
	138	extern struct mdstat_ent *mdstat_read(void);
	139	extern void free_mdstat(struct mdstat_ent *ms);
	140
52826846 NB	141	#ifndef Sendmail
	142	#define Sendmail "/usr/lib/sendmail -t"
	143	#endif
	144
682c7051 NB	145	extern char map_num(mapping_t map, int num);
682c7051 NB	146	extern int map_name(mapping_t map, char name);
e0d19036	147	extern mapping_t r5layout[], pers[], modes[];
682c7051	148
82b27616	149	extern char *map_dev(int major, int minor);
64c4757e NB	150
	151
	152	extern int Manage_ro(char *devname, int fd, int readonly);
	153	extern int Manage_runstop(char *devname, int fd, int runstop);
	154	extern int Manage_subdevs(char *devname, int fd,
cd29a5c8	155	mddev_dev_t devlist);
64c4757e NB	156
	157
	158	extern int Assemble(char *mddev, int mdfd,
52826846 NB	159	mddev_ident_t ident,
52826846 NB	160	char *conffile,
cd29a5c8	161	mddev_dev_t devlist,
64c4757e	162	int readonly, int runstop,
5787fa49	163	char *update,
64c4757e NB	164	int verbose, int force);
	165
	166	extern int Build(char *mddev, int mdfd, int chunk, int level,
	167	int raiddisks,
cd29a5c8	168	mddev_dev_t devlist);
64c4757e NB	169
	170
	171	extern int Create(char *mddev, int mdfd,
aa88f531	172	int chunk, int level, int layout, unsigned long size, int raiddisks, int sparedisks,
cd29a5c8	173	int subdevs, mddev_dev_t devlist,
52826846	174	int runstop, int verbose, int force);
64c4757e	175
feb716e9	176	extern int Detail(char *dev, int brief, int test);
e0d19036	177	extern int Query(char *dev);
bd526cee	178	extern int Examine(mddev_dev_t devlist, int brief, int scan, int SparcAdjust);
cd29a5c8	179	extern int Monitor(mddev_dev_t devlist,
e0d19036	180	char mailaddr, char alert_cmd,
aa88f531	181	int period, int daemonise, int scan, int oneshot,
98c6faba	182	char *config, int test);
64c4757e	183
9a9dab36 NB	184	extern int Kill(char *dev, int force);
9a9dab36 NB	185
64c4757e	186	extern int md_get_version(int fd);
e0d19036	187	extern int get_linux_version(void);
64c4757e	188	extern int parse_uuid(char *str, int uuid[4]);
682c7051 NB	189	extern int check_ext2(int fd, char *name);
	190	extern int check_reiser(int fd, char *name);
	191	extern int check_raid(int fd, char *name);
64c4757e	192
e0d19036 NB	193	extern mddev_ident_t conf_get_ident(char conffile, char dev);
	194	extern mddev_dev_t conf_get_devs(char *conffile);
	195	extern char conf_get_mailaddr(char conffile);
	196	extern char conf_get_program(char conffile);
	197	extern char conf_line(FILE file);
98c6faba	198	extern char conf_word(FILE file, int allow_key);
e0d19036 NB	199	extern void free_line(char *line);
	200	extern int match_oneof(char devices, char devname);
	201	extern int load_super(int fd, mdp_super_t *super);
	202	extern void uuid_from_super(int uuid[4], mdp_super_t *super);
	203	extern int same_uuid(int a[4], int b[4]);
	204	extern int compare_super(mdp_super_t first, mdp_super_t second);
98c6faba	205	extern unsigned long calc_sb_csum(mdp_super_t *super);
e0d19036 NB	206	extern int store_super(int fd, mdp_super_t *super);
	207	extern int enough(int level, int raid_disks, int avail_disks);
	208	extern int ask(char *mesg);
	209
cd29a5c8	210
56eb10c0	211	extern char *human_size(long long bytes);
e0d19036 NB	212	char *human_size_brief(long long bytes);
	213
	214	extern void put_md_name(char *name);
	215	extern char *get_md_name(int dev);
	216
c913b90e	217	extern char DefaultConfFile[];