Create missing /dev files where needed.

[thirdparty/mdadm.git] / mdadm.h

diff --git a/mdadm.h b/mdadm.h
index 5df6eeedd2aa44b8a1f14769a4548061abfd59a8..a9ae698d36a1b2e7fe07f7b8e15050387b4454cc 100644 (file)
--- a/mdadm.h
+++ b/mdadm.h
@@ -71,12 +71,32 @@ char *strncpy(char *dest, const char *src, size_t n) __THROW;
 #include       "md_p.h"
 #include       "bitmap.h"
 
+#include <endian.h>
+/* #include "asm/byteorder.h" Redhat don't like this so... */
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+#  include <linux/byteorder/little_endian.h>
+#elif __BYTE_ORDER == __BIG_ENDIAN
+#  include <linux/byteorder/big_endian.h>
+#elif __BYTE_ORDER == __PDP_ENDIAN
+#  include <linux/byteorder/pdp_endian.h>
+#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;
 };
 
 #define Name "mdadm"
@@ -164,6 +184,58 @@ 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;
+};
+/* various details can be requested */
+#define        GET_LEVEL       1
+#define        GET_LAYOUT      2
+#define        GET_COMPONENT   4
+#define        GET_CHUNK       8
+
+#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
@@ -174,7 +246,7 @@ 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 {
@@ -183,7 +255,7 @@ extern struct superswitch {
        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, mddev_ident_t ident, 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, unsigned long long size, char *name);
@@ -237,12 +309,17 @@ extern int Manage_subdevs(char *devname, int fd,
                          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(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,
                    int verbose, int force);
@@ -353,3 +430,8 @@ extern int open_mddev(char *dev, int autof);
 #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