X-Git-Url: http://git.ipfire.org/?p=thirdparty%2Fmdadm.git;a=blobdiff_plain;f=mdadm.h;h=f16cd7c0541931ba50e7f36ea02f3fe6999426bd;hp=55e9e465fdde8da0b07dd74ed4e738083bffa80d;hb=0f22b998fb9cf8478810b89cd50fa5b4fbf11d38;hpb=1538aca5cbbd99be47657e0ca0b7e2186426a1b1;ds=sidebyside diff --git a/mdadm.h b/mdadm.h index 55e9e465..f16cd7c0 100644 --- a/mdadm.h +++ b/mdadm.h @@ -68,28 +68,30 @@ extern __off64_t lseek64 __P ((int __fd, __off64_t __offset, int __whence)); #define DEFAULT_BITMAP_DELAY 5 #define DEFAULT_MAX_WRITE_BEHIND 256 -/* VAR_RUN is where pid and socket files used for communicating - * with mdmon normally live. It should be /var/run, but if - * it is too hard to remount /var/run as read-only rather than - * unmounting it at shutdown time, then it should be - * redefined to some place that comfortably persists until - * final shutdown, possibly in /dev if that is a tmpfs. - * Note: VAR_RUN does not need to be writable at shutdown, - * only during boot when "mdmon --takeover" is run. - */ -#ifndef VAR_RUN -#define VAR_RUN "/var/run/mdadm" -#endif /* VAR_RUN */ -/* ALT_RUN should be somewhere that persists across the pivotroot +/* MAP_DIR should be somewhere that persists across the pivotroot * from early boot to late boot. - * If you don't have /lib/init/rw you might want to use /dev/.something + * Currently /dev seems to be the only option on most distros. + */ +#ifndef MAP_DIR +#define MAP_DIR "/dev/.mdadm" +#endif /* MAP_DIR */ +/* MAP_FILE is what we name the map file we put in MAP_DIR, in case you + * want something other than the default of "map" + */ +#ifndef MAP_FILE +#define MAP_FILE "map" +#endif /* MAP_FILE */ +/* MDMON_DIR is where pid and socket files used for communicating + * with mdmon normally live. It *should* be /var/run, but when + * mdmon is needed at early boot then it needs to write there prior + * to /var/run being mounted read/write, and it also then needs to + * persist beyond when /var/run is mounter read-only. So, to be + * safe, the default is somewhere that is read/write early in the + * boot process and stays up as long as possible during shutdown. */ -#ifndef ALT_RUN -#define ALT_RUN "/lib/init/rw/mdadm" -#endif /* ALT_RUN */ -#ifndef ALT_MAPFILE -#define ALT_MAPFILE "map" -#endif /* ALT_MAPFILE */ +#ifndef MDMON_DIR +#define MDMON_DIR "/dev/.mdadm/" +#endif /* MDMON_DIR */ #include "md_u.h" #include "md_p.h" @@ -193,7 +195,7 @@ struct mdinfo { unsigned long safe_mode_delay; /* ms delay to mark clean */ int new_level, delta_disks, new_layout, new_chunk; int errors; - int cache_size; /* size of raid456 stripe cache*/ + unsigned long cache_size; /* size of raid456 stripe cache*/ int mismatch_cnt; char text_version[50]; void *update_private; /* for passing metadata-format @@ -298,14 +300,14 @@ typedef struct mddev_ident_s { int uuid[4]; char name[33]; - unsigned int super_minor; + int super_minor; char *devices; /* comma separated list of device * names with wild cards */ int level; - unsigned int raid_disks; - unsigned int spare_disks; + int raid_disks; + int spare_disks; struct supertype *st; int autof; /* 1 for normal, 2 for partitioned */ char *spare_group; @@ -669,9 +671,11 @@ extern struct superswitch { int swapuuid; /* true if uuid is bigending rather than hostendian */ int external; const char *name; /* canonical metadata name */ -} super0, super1, super_ddf, *superlist[]; +} *superlist[]; -extern struct superswitch super_imsm; +extern struct superswitch super0, super1; +extern struct superswitch super_imsm, super_ddf; +extern struct superswitch mbr; struct metadata_update { int len; @@ -732,6 +736,91 @@ extern void get_one_disk(int mdfd, mdu_array_info_t *ainf, mdu_disk_info_t *disk); void wait_for(char *dev, int fd); +/* + * Data structures for policy management. + * Each device can have a policy structure that lists + * various name/value pairs each possibly with a metadata associated. + * The policy list is sorted by name/value/metadata + */ +struct dev_policy { + struct dev_policy *next; + char *name; /* None of these strings are allocated. They are + * all just references to strings which are known + * to exist elsewhere. + * name and metadata can be compared by address equality. + */ + const char *metadata; + char *value; +}; + +extern char pol_act[], pol_domain[], pol_metadata[]; + +/* iterate over the sublist starting at list, having the same + * 'name' as 'list', and matching the given metadata (Where + * NULL matches anything + */ +#define pol_for_each(item, list, _metadata) \ + for (item = list; \ + item && item->name == list->name; \ + item = item->next) \ + if (!(!_metadata || !item->metadata || _metadata == item->metadata)) \ + ; else + +/* + * policy records read from mdadm are largely just name-value pairs. + * The names are constants, not strdupped + */ +struct pol_rule { + struct pol_rule *next; + char *type; /* rule_policy or rule_part */ + struct rule { + struct rule *next; + char *name; + char *value; + char *dups; /* duplicates of 'value' with a partNN appended */ + } *rule; +}; + +extern char rule_policy[], rule_part[]; +extern char rule_path[], rule_type[]; +extern char type_part[], type_disk[]; + +extern void policyline(char *line, char *type); +extern void policy_free(void); + +extern struct dev_policy *disk_policy(struct mdinfo *disk); +extern void dev_policy_free(struct dev_policy *p); + +extern void pol_new(struct dev_policy **pol, char *name, char *val, char *metadata); +extern struct dev_policy *pol_find(struct dev_policy *pol, char *name); + +enum policy_action { + act_default, + act_include, + act_re_add, + act_spare, + act_force_spare, + act_err +}; + +extern int policy_action_allows(struct dev_policy *plist, const char *metadata, + enum policy_action want); +extern int disk_action_allows(struct mdinfo *disk, const char *metadata, + enum policy_action want); + +struct domainlist { + struct domainlist *next; + char *dom; +}; + +extern int domain_test(struct domainlist *dom, struct dev_policy *pol, + const char *metadata); +extern struct domainlist *domain_from_array(struct mdinfo *mdi, + const char *metadata); +extern void domain_free(struct domainlist *dl); +extern void domain_merge(struct domainlist **domp, struct dev_policy *pol, + const char *metadata); + #if __GNUC__ < 3 struct stat64; #endif @@ -930,10 +1019,10 @@ extern int open_mddev(char *dev, int report_errors); extern int open_container(int fd); extern int is_container_member(struct mdstat_ent *ent, char *devname); extern int is_subarray_active(char *subarray, char *devname); +int is_container_active(char *devname); extern int open_subarray(char *dev, struct supertype *st, int quiet); extern struct superswitch *version_to_superswitch(char *vers); -extern char *pid_dir; extern int mdmon_running(int devnum); extern int mdmon_pid(int devnum); extern int check_env(char *name);