X-Git-Url: http://git.ipfire.org/?p=thirdparty%2Fmdadm.git;a=blobdiff_plain;f=mdadm.h;h=5e2cfe41c1fc3eeb493c7c65c642dba000f5a3fe;hp=c728badcdcc1f4dca8ef60dac411617d75434db0;hb=edd8d13c0247b8df5876a94c2d61d74d2cf62c7e;hpb=f7e7067b47d2ca9994f9222dfa5833ac84ce3b22

diff --git a/mdadm.h b/mdadm.h
index c728badc..5e2cfe41 100644
--- a/mdadm.h
+++ b/mdadm.h
@@ -348,6 +348,7 @@ extern int sysfs_set_array(struct mdinfo *sra,
 extern int sysfs_add_disk(struct mdinfo *sra, struct mdinfo *sd);
 extern int sysfs_disk_to_sg(int fd);
 extern int sysfs_disk_to_scsi_id(int fd, __u32 *id);
+extern int sysfs_unique_holder(int devnum, long rdev);
 
 
 extern int save_stripes(int *source, unsigned long long *offsets,
@@ -429,10 +430,12 @@ extern struct superswitch {
 	 * The determination is made either by:
 	 *   load_super being given a 'component' string.
 	 *   validate_geometry determining what to create.
-	 * getinfo_super_n really needs to be removed..
+	 * The info includes both array information and device information.
+	 * The particular device should be:
+	 *   The last device added by add_to_super
+	 *   The device the metadata was loaded from by load_super
 	 */
 	void (*getinfo_super)(struct supertype *st, struct mdinfo *info);
-	void (*getinfo_super_n)(struct supertype *st, struct mdinfo *info);
 
 	/* Check if the given metadata is flagged as belonging to "this"
 	 * host.  For arrays that don't determine a minor-number, this
@@ -499,6 +502,15 @@ extern struct superswitch {
 	void (*locate_bitmap)(struct supertype *st, int fd);
 	int (*write_bitmap)(struct supertype *st, int fd);
 	void (*free_super)(struct supertype *st);
+
+	/* validate_geometry is called with an st returned by
+	 * match_metadata_desc.
+	 * It should check that the geometry described in compatible with
+	 * the metadata type.  It will be called repeatedly as devices
+	 * added to validate changing size and new devices.  If there are
+	 * inter-device dependencies, it should record sufficient details
+	 * so these can be validated.
+	 */
 	int (*validate_geometry)(struct supertype *st, int level, int layout,
 				 int raiddisks,
 				 int chunk, unsigned long long size,
@@ -530,6 +542,8 @@ extern struct superswitch {
 	void (*sync_metadata)(struct supertype *st);
 	void (*process_update)(struct supertype *st,
 			       struct metadata_update *update);
+	void (*prepare_update)(struct supertype *st,
+			       struct metadata_update *update);
 
 	/* activate_spare will check if the array is degraded and, if it
 	 * is, try to find some spare space in the container.
@@ -547,6 +561,13 @@ extern struct superswitch {
 
 extern struct superswitch super_imsm;
 
+struct metadata_update {
+	int	len;
+	char	*buf;
+	void	*space; /* allocated space that monitor will use */
+	struct metadata_update *next;
+};
+
 /* A supertype holds a particular collection of metadata.
  * It identifies the metadata type by the superswitch, and the particular
  * sub-version of that metadata type.
@@ -567,11 +588,12 @@ struct supertype {
 	void *sb;
 	void *info;
 
+	struct metadata_update *updates;
+	struct metadata_update **update_tail;
+
 	/* extra stuff used by mdmon */
 	struct active_array *arrays;
 	int sock; /* listen to external programs */
-	int mgr_pipe[2]; /* communicate between threads */
-	int mon_pipe[2]; /* communicate between threads */
 	int devnum;
 	char *devname; /* e.g. md0.  This appears in metadata_verison:
 			*  external:/md0/12
@@ -728,6 +750,8 @@ extern unsigned long long get_component_size(int fd);
 extern void remove_partitions(int fd);
 extern unsigned long long calc_array_size(int level, int raid_disks, int layout,
 				   int chunksize, unsigned long long devsize);
+extern int flush_metadata_updates(struct supertype *st);
+extern void append_metadata_update(struct supertype *st, void *buf, int len);
 
 
 extern char *human_size(long long bytes);