1 files changed, 156 insertions, 0 deletions
diff --git a/sys/geom/raid/g_raid_md_if.m b/sys/geom/raid/g_raid_md_if.m
new file mode 100644
index 0000000..05e9f66
--- /dev/null
+++ b/sys/geom/raid/g_raid_md_if.m
@@ -0,0 +1,156 @@
+#-
+# Copyright (c) 2010 Alexander Motin
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# $FreeBSD$
+
+#include <sys/param.h>
+#include <sys/lock.h>
+#include <sys/malloc.h>
+#include <sys/mutex.h>
+#include <sys/sbuf.h>
+#include <sys/bus.h>
+#include <machine/bus.h>
+#include <sys/systm.h>
+#include <geom/geom.h>
+#include <geom/raid/g_raid.h>
+
+# The G_RAID metadata class interface.
+
+INTERFACE g_raid_md;
+
+HEADER {
+#define G_RAID_MD_TASTE_FAIL		-1
+#define G_RAID_MD_TASTE_EXISTING	 0
+#define G_RAID_MD_TASTE_NEW		 1
+};
+
+# Default implementations of methods.
+CODE {
+	static int
+	g_raid_md_create_default(struct g_raid_md_object *md)
+	{
+
+		return (G_RAID_MD_TASTE_FAIL);
+	}
+
+	static int
+	g_raid_md_ctl_default(struct g_raid_md_object *md,
+	    struct gctl_req *req)
+	{
+
+		return (-1);
+	}
+
+	static int
+	g_raid_md_volume_event_default(struct g_raid_md_object *md,
+	    struct g_raid_volume *vol, u_int event)
+	{
+
+		return (-1);
+	}
+
+	static int
+	g_raid_md_free_disk_default(struct g_raid_md_object *md,
+	    struct g_raid_volume *vol)
+	{
+
+		return (0);
+	}
+
+	static int
+	g_raid_md_free_volume_default(struct g_raid_md_object *md,
+	    struct g_raid_volume *vol)
+	{
+
+		return (0);
+	}
+};
+
+# create() - create new node from scratch.
+METHOD int create {
+	struct g_raid_md_object *md;
+	struct g_class *mp;
+	struct g_geom **gp;
+} DEFAULT g_raid_md_create_default;
+
+# taste() - taste disk and, if needed, create new node.
+METHOD int taste {
+	struct g_raid_md_object *md;
+	struct g_class *mp;
+	struct g_consumer *cp;
+	struct g_geom **gp;
+};
+
+# ctl() - user-level control commands handling method.
+METHOD int ctl {
+	struct g_raid_md_object *md;
+	struct gctl_req *req;
+} DEFAULT g_raid_md_ctl_default;
+
+# event() - events handling method.
+METHOD int event {
+	struct g_raid_md_object *md;
+	struct g_raid_disk *disk;
+	u_int event;
+};
+
+# volume_event() - events handling method.
+METHOD int volume_event {
+	struct g_raid_md_object *md;
+	struct g_raid_volume *vol;
+	u_int event;
+} DEFAULT g_raid_md_volume_event_default;
+
+# write() - metadata write method.
+METHOD int write {
+	struct g_raid_md_object *md;
+	struct g_raid_volume *vol;
+	struct g_raid_subdisk *sd;
+	struct g_raid_disk *disk;
+};
+
+# fail_disk() - mark disk as failed and remove it from use.
+METHOD int fail_disk {
+	struct g_raid_md_object *md;
+	struct g_raid_subdisk *sd;
+	struct g_raid_disk *disk;
+};
+
+# free_disk() - disk destructor.
+METHOD int free_disk {
+	struct g_raid_md_object *md;
+	struct g_raid_disk *disk;
+} DEFAULT g_raid_md_free_disk_default;
+
+# free_volume() - volume destructor.
+METHOD int free_volume {
+	struct g_raid_md_object *md;
+	struct g_raid_volume *vol;
+} DEFAULT g_raid_md_free_volume_default;
+
+# free() - destructor.
+METHOD int free {
+	struct g_raid_md_object *md;
+};