X-Git-Url: http://git.ipfire.org/?p=thirdparty%2Fmdadm.git;a=blobdiff_plain;f=mdadm.h;h=d40d18735d906e962814357c5c9ea7e897e24a95;hp=a816846ccba68271ba07f0c16accea5b1b31be60;hb=350f29f90d1f6bb3ddfafea368327911f9e8b27c;hpb=b5e64645037e99b5f05c9499b27b422ae60d23a9 diff --git a/mdadm.h b/mdadm.h index a816846c..d40d1873 100644 --- a/mdadm.h +++ b/mdadm.h @@ -1,7 +1,7 @@ /* * mdadm - manage Linux "md" devices aka RAID arrays. * - * Copyright (C) 2001-2002 Neil Brown + * Copyright (C) 2001-2006 Neil Brown * * * This program is free software; you can redistribute it and/or modify @@ -27,7 +27,7 @@ * Australia */ -#define __USE_LARGEFILE64 +#define _GNU_SOURCE #include #ifndef __dietlibc__ extern __off64_t lseek64 __P ((int __fd, __off64_t __offset, int __whence)); @@ -37,15 +37,18 @@ extern __off64_t lseek64 __P ((int __fd, __off64_t __offset, int __whence)); #include #include #include +#include #include #include #include #include #include -#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 +#include +#ifdef __dietlibc__ +#include +/* dietlibc has deprecated random and srandom!! */ +#define random rand +#define srandom srand #endif @@ -61,9 +64,77 @@ char *strncpy(char *dest, const char *src, size_t n) __THROW; #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" + +#include +/* Redhat don't like to #include , and + * some time include isn't enough, + * and there is no standard conversion function so... */ +/* And dietlibc doesn't think byteswap is ok, so.. */ +/* #include */ +#define bswap_16(x) (((x) & 0x00ffU) << 8 | \ + ((x) & 0xff00U) >> 8) +#define bswap_32(x) (((x) & 0x000000ffU) << 24 | \ + ((x) & 0xff000000U) >> 24 | \ + ((x) & 0x0000ff00U) << 8 | \ + ((x) & 0x00ff0000U) >> 8) +#define bswap_64(x) (((x) & 0x00000000000000ffULL) << 56 | \ + ((x) & 0xff00000000000000ULL) >> 56 | \ + ((x) & 0x000000000000ff00ULL) << 40 | \ + ((x) & 0x00ff000000000000ULL) >> 40 | \ + ((x) & 0x0000000000ff0000ULL) << 24 | \ + ((x) & 0x0000ff0000000000ULL) >> 24 | \ + ((x) & 0x00000000ff000000ULL) << 8 | \ + ((x) & 0x000000ff00000000ULL) >> 8) + +#if BYTE_ORDER == LITTLE_ENDIAN +#define __cpu_to_le16(_x) (_x) +#define __cpu_to_le32(_x) (_x) +#define __cpu_to_le64(_x) (_x) +#define __le16_to_cpu(_x) (_x) +#define __le32_to_cpu(_x) (_x) +#define __le64_to_cpu(_x) (_x) +#elif BYTE_ORDER == BIG_ENDIAN +#define __cpu_to_le16(_x) bswap_16(_x) +#define __cpu_to_le32(_x) bswap_32(_x) +#define __cpu_to_le64(_x) bswap_64(_x) +#define __le16_to_cpu(_x) bswap_16(_x) +#define __le32_to_cpu(_x) bswap_32(_x) +#define __le64_to_cpu(_x) bswap_64(_x) +#else +# error "unknown endianness." +#endif + + + +/* 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]; + char name[33]; + unsigned long long data_offset; + unsigned long long component_size; + int reshape_active; + unsigned long long reshape_progress; + int new_level, delta_disks, new_layout, new_chunk; +}; + +struct createinfo { + int uid; + int gid; + int autof; + int mode; + int symlinks; + struct supertype *supertype; +}; #define Name "mdadm" @@ -78,11 +149,28 @@ enum mode { }; 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[]; +/* for option that don't have short equivilents, we assign arbitrary + * small numbers. '1' means an undecorated option, so we start at '2'. + */ +enum special_options { + AssumeClean = 2, + BitmapChunk, + WriteBehind, + ReAdd, + NoDegraded, + Sparc22, + BackupFile, + HomeHost, + AutoHomeHost, + Symlinks, +}; + /* structures read from config file */ /* List of mddevice names and identifiers * Identifiers can be: @@ -98,7 +186,8 @@ typedef struct mddev_ident_s { char *devname; int uuid_set; - __u32 uuid[4]; + int uuid[4]; + char name[33]; unsigned int super_minor; @@ -108,8 +197,11 @@ typedef struct mddev_ident_s { int level; unsigned int raid_disks; unsigned int spare_disks; + struct supertype *st; int autof; /* 1 for normal, 2 for partitioned */ char *spare_group; + char *bitmap_file; + int bitmap_fd; struct mddev_ident_s *next; } *mddev_ident_t; @@ -120,6 +212,9 @@ typedef struct mddev_dev_s { char disposition; /* 'a' for add, 'r' for remove, 'f' for fail. * Not set for names read from .config */ + char writemostly; + char re_add; + char used; /* set when used */ struct mddev_dev_s *next; } *mddev_dev_t; @@ -140,57 +235,204 @@ struct mdstat_ent { struct mdstat_ent *next; }; -extern struct mdstat_ent *mdstat_read(int); +extern struct mdstat_ent *mdstat_read(int hold, int start); extern void free_mdstat(struct mdstat_ent *ms); extern void mdstat_wait(int seconds); +/* Data structure for holding info read from sysfs */ +struct sysdev { + char name[20]; + int role; + int major, minor; + unsigned long long offset, size; + int state; + int errors; + struct sysdev *next; +}; +struct sysarray { + char name[20]; + struct sysdev *devs; + int chunk; + unsigned long long component_size; + int layout; + int level; + int spares; + int cache_size; + int mismatch_cnt; +}; +/* various details can be requested */ +#define GET_LEVEL 1 +#define GET_LAYOUT 2 +#define GET_COMPONENT 4 +#define GET_CHUNK 8 +#define GET_CACHE 16 +#define GET_MISMATCH 32 + +#define GET_DEVS 1024 /* gets role, major, minor */ +#define GET_OFFSET 2048 +#define GET_SIZE 4096 +#define GET_STATE 8192 +#define GET_ERROR 16384 + +/* If fd >= 0, get the array it is open on, + * else use devnum. >=0 -> major9. <0..... + */ +extern struct sysarray *sysfs_read(int fd, int devnum, unsigned long options); +extern int sysfs_set_str(struct sysarray *sra, struct sysdev *dev, + char *name, char *val); +extern int sysfs_set_num(struct sysarray *sra, struct sysdev *dev, + char *name, unsigned long long val); +extern int sysfs_get_ll(struct sysarray *sra, struct sysdev *dev, + char *name, unsigned long long *val); + + +extern int save_stripes(int *source, unsigned long long *offsets, + int raid_disks, int chunk_size, int level, int layout, + int nwrites, int *dest, + unsigned long long start, unsigned long long length); +extern int restore_stripes(int *dest, unsigned long long *offsets, + int raid_disks, int chunk_size, int level, int layout, + int source, unsigned long long read_offset, + unsigned long long start, unsigned long long length); + #ifndef Sendmail #define Sendmail "/usr/lib/sendmail -t" #endif +#define SYSLOG_FACILITY LOG_DAEMON + 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 char *map_dev(int major, int minor, int create); + + +extern struct superswitch { + void (*examine_super)(void *sbv, char *homehost); + void (*brief_examine_super)(void *sbv); + void (*detail_super)(void *sbv, char *homehost); + void (*brief_detail_super)(void *sbv); + void (*uuid_from_super)(int uuid[4], void *sbv); + void (*getinfo_super)(struct mdinfo *info, void *sbv); + int (*match_home)(void *sbv, char *homehost); + int (*update_super)(struct mdinfo *info, void *sbv, char *update, + char *devname, int verbose, + int uuid_set, char *homehost); + int (*init_super)(struct supertype *st, void **sbp, mdu_array_info_t *info, unsigned long long size, char *name, char *homehost, int *uuid); + 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 *chunkp, + 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); +extern int get_dev_size(int fd, char *dname, unsigned long long *sizep); + +#if __GNUC__ < 3 +struct stat64; +#endif + +#define HAVE_NFTW we assume +#define HAVE_FTW + +#ifdef UCLIBC +# include +# ifndef __UCLIBC_HAS_FTW__ +# undef HAVE_FTW +# undef HAVE_NFTW +# endif +#endif + +#ifdef __dietlibc__ +# undef HAVE_NFTW +#endif + +#ifndef HAVE_NFTW +# define FTW_PHYS 1 +# ifndef HAVE_FTW + struct FTW {}; +# endif +#endif + +#ifdef HAVE_FTW +# include +#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); +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); + 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, int force); +extern int Grow_reshape(char *devname, int fd, int quiet, char *backup_file, + long long size, + int level, int layout, int chunksize, int raid_disks); +extern int Grow_restart(struct supertype *st, struct mdinfo *info, + int *fdlist, int cnt, char *backup_file); -extern int Assemble(char *mddev, int mdfd, +extern int Assemble(struct supertype *st, char *mddev, int mdfd, mddev_ident_t ident, - char *conffile, - mddev_dev_t devlist, + mddev_dev_t devlist, char *backup_file, int readonly, int runstop, - char *update, + char *update, char *homehost, 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); + mddev_dev_t devlist, int assume_clean, + char *bitmap_file, int bitmap_chunk, int write_behind, int delay, int verbose); -extern int Create(char *mddev, int mdfd, - int chunk, int level, int layout, unsigned long size, int raiddisks, int sparedisks, +extern int Create(struct supertype *st, char *mddev, int mdfd, + int chunk, int level, int layout, unsigned long long size, int raiddisks, int sparedisks, + char *name, char *homehost, int *uuid, int subdevs, mddev_dev_t devlist, - int runstop, int verbose, int force); + int runstop, int verbose, int force, int assume_clean, + char *bitmap_file, int bitmap_chunk, int write_behind, int delay); -extern int Detail(char *dev, int brief, int test); +extern int Detail(char *dev, int brief, int test, char *homehost); extern int Query(char *dev); -extern int Examine(mddev_dev_t devlist, int brief, int scan, int SparcAdjust); +extern int Examine(mddev_dev_t devlist, int brief, int scan, int SparcAdjust, + struct supertype *forcest, char *homehost); 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); + int dosyslog, int test, char *pidfile); + +extern int Kill(char *dev, int force, int quiet); +extern int Wait(char *dev); -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 bitmap_update_uuid(int fd, int *uuid, int swap); extern int md_get_version(int fd); extern int get_linux_version(void); @@ -200,25 +442,32 @@ 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); - - -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 int dev_open(char *dev, int flags); +extern int is_standard(char *dev, int *nump); + +extern int parse_auto(char *str, char *msg, int config); +extern mddev_ident_t conf_get_ident(char *dev); +extern mddev_dev_t conf_get_devs(void); +extern struct createinfo *conf_get_create_info(void); +extern void set_conffile(char *file); +extern char *conf_get_mailaddr(void); +extern char *conf_get_mailfrom(void); +extern char *conf_get_program(void); +extern char *conf_get_homehost(void); 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 same_uuid(int a[4], int b[4], int swapuuid); +extern void copy_uuid(void *a, 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, int clean, + char *avail, int avail_disks); extern int ask(char *mesg); +extern unsigned long long get_component_size(int fd); +extern void remove_partitions(int fd); extern char *human_size(long long bytes); @@ -255,3 +504,19 @@ extern int open_mddev(char *dev, int autof); #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 + +/* for raid5 */ +#define ALGORITHM_LEFT_ASYMMETRIC 0 +#define ALGORITHM_RIGHT_ASYMMETRIC 1 +#define ALGORITHM_LEFT_SYMMETRIC 2 +#define ALGORITHM_RIGHT_SYMMETRIC 3