[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>
extern __off64_t lseek64 __P ((int __fd, __off64_t __offset, int __whence));

#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>

#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,sizeof(__u64)) /* 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[],
	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
 */
typedef struct mddev_ident_s {
	char *devname;
	
	int uuid_set;
	__u32 uuid[4];

	int super_minor;	/* -1 if not set */

	char *devices;		/* comma separated list of device
				 * names with wild cards
				 */
	int level;		/* -10 if not set */
	int raid_disks;		/* -1 if not set */
	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,
		    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, int size, int raiddisks, int sparedisks,
		  int subdevs, mddev_dev_t devlist,
		  int runstop, int verbose, int force);

extern int Detail(char *dev, int brief);
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 scan,
		   char *config);

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 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 int 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
	1	/*
	2	* mdadm - manage Linux "md" devices aka RAID arrays.
	3	*
	4	* Copyright (C) 2001-2002 Neil Brown <neilb@cse.unsw.edu.au>
	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>
	32	extern __off64_t lseek64 __P ((int __fd, __off64_t __offset, int __whence));
	33
	34	#include <sys/types.h>
	35	#include <sys/stat.h>
	36	#include <stdlib.h>
	37	#include <time.h>
	38	#include <getopt.h>
	39	#include <fcntl.h>
	40	#include <stdio.h>
	41	#include <errno.h>
	42	#include <string.h>
	43
	44	#include <linux/kdev_t.h>
	45	/#include <linux/fs.h> /
	46	#include <sys/mount.h>
	47	#include <asm/types.h>
	48	#include <sys/ioctl.h>
	49	#define MD_MAJOR 9
	50
	51	#ifndef BLKGETSIZE64
	52	#define BLKGETSIZE64 _IOR(0x12,114,sizeof(__u64)) /* return device size in bytes (u64 arg) /
	53	#endif
	54
	55
	56	#include "md_u.h"
	57	#include "md_p.h"
	58
	59	#define Name "mdadm"
	60
	61	enum mode {
	62	ASSEMBLE=1,
	63	BUILD,
	64	CREATE,
	65	MANAGE,
	66	MISC,
	67	MONITOR,
	68	};
	69
	70	extern char short_options[];
	71	extern struct option long_options[];
	72	extern char Version[], Usage[], Help[],
	73	Help_create[], Help_build[], Help_assemble[],
	74	Help_manage[], Help_misc[], Help_monitor[], Help_config[];
	75
	76	/* structures read from config file */
	77	/* List of mddevice names and identifiers
	78	* Identifiers can be:
	79	* uuid=128-hex-uuid
	80	* super-minor=decimal-minor-number-from-superblock
	81	* devices=comma,separated,list,of,device,names,with,wildcards
	82	*
	83	* If multiple fields are present, the intersection of all matching
	84	* devices is considered
	85	*/
	86	typedef struct mddev_ident_s {
	87	char *devname;
	88
	89	int uuid_set;
	90	__u32 uuid[4];
	91
	92	int super_minor; /* -1 if not set */
	93
	94	char devices; / comma separated list of device
	95	* names with wild cards
	96	*/
	97	int level; /* -10 if not set */
	98	int raid_disks; /* -1 if not set */
	99	char *spare_group;
	100	struct mddev_ident_s *next;
	101	} *mddev_ident_t;
	102
	103	/* List of device names - wildcards expanded */
	104	typedef struct mddev_dev_s {
	105	char *devname;
	106	char disposition; /* 'a' for add, 'r' for remove, 'f' for fail.
	107	* Not set for names read from .config
	108	*/
	109	struct mddev_dev_s *next;
	110	} *mddev_dev_t;
	111
	112	typedef struct mapping {
	113	char *name;
	114	int num;
	115	} mapping_t;
	116
	117
	118	struct mdstat_ent {
	119	char *dev;
	120	int devnum;
	121	int active;
	122	char *level;
	123	char pattern; / U or up, _ for down */
	124	int percent; /* -1 if no resync */
	125	struct mdstat_ent *next;
	126	};
	127
	128	extern struct mdstat_ent *mdstat_read(void);
	129	extern void free_mdstat(struct mdstat_ent *ms);
	130
	131	#ifndef Sendmail
	132	#define Sendmail "/usr/lib/sendmail -t"
	133	#endif
	134
	135	extern char map_num(mapping_t map, int num);
	136	extern int map_name(mapping_t map, char name);
	137	extern mapping_t r5layout[], pers[], modes[];
	138
	139	extern char *map_dev(int major, int minor);
	140
	141
	142	extern int Manage_ro(char *devname, int fd, int readonly);
	143	extern int Manage_runstop(char *devname, int fd, int runstop);
	144	extern int Manage_subdevs(char *devname, int fd,
	145	mddev_dev_t devlist);
	146
	147
	148	extern int Assemble(char *mddev, int mdfd,
	149	mddev_ident_t ident,
	150	char *conffile,
	151	mddev_dev_t devlist,
	152	int readonly, int runstop,
	153	int verbose, int force);
	154
	155	extern int Build(char *mddev, int mdfd, int chunk, int level,
	156	int raiddisks,
	157	mddev_dev_t devlist);
	158
	159
	160	extern int Create(char *mddev, int mdfd,
	161	int chunk, int level, int layout, int size, int raiddisks, int sparedisks,
	162	int subdevs, mddev_dev_t devlist,
	163	int runstop, int verbose, int force);
	164
	165	extern int Detail(char *dev, int brief);
	166	extern int Query(char *dev);
	167	extern int Examine(mddev_dev_t devlist, int brief, int scan, int SparcAdjust);
	168	extern int Monitor(mddev_dev_t devlist,
	169	char mailaddr, char alert_cmd,
	170	int period, int scan,
	171	char *config);
	172
	173	extern int Kill(char *dev, int force);
	174
	175	extern int md_get_version(int fd);
	176	extern int get_linux_version(void);
	177	extern int parse_uuid(char *str, int uuid[4]);
	178	extern int check_ext2(int fd, char *name);
	179	extern int check_reiser(int fd, char *name);
	180	extern int check_raid(int fd, char *name);
	181
	182	extern mddev_ident_t conf_get_ident(char conffile, char dev);
	183	extern mddev_dev_t conf_get_devs(char *conffile);
	184	extern char conf_get_mailaddr(char conffile);
	185	extern char conf_get_program(char conffile);
	186	extern char conf_line(FILE file);
	187	extern void free_line(char *line);
	188	extern int match_oneof(char devices, char devname);
	189	extern int load_super(int fd, mdp_super_t *super);
	190	extern void uuid_from_super(int uuid[4], mdp_super_t *super);
	191	extern int same_uuid(int a[4], int b[4]);
	192	extern int compare_super(mdp_super_t first, mdp_super_t second);
	193	extern int calc_sb_csum(mdp_super_t *super);
	194	extern int store_super(int fd, mdp_super_t *super);
	195	extern int enough(int level, int raid_disks, int avail_disks);
	196	extern int ask(char *mesg);
	197
	198
	199	extern char *human_size(long long bytes);
	200	char *human_size_brief(long long bytes);
	201
	202	extern void put_md_name(char *name);
	203	extern char *get_md_name(int dev);
	204
	205	extern char DefaultConfFile[];