1 files changed, 118 insertions, 0 deletions
diff --git a/sys/geom/raid/g_raid_tr_if.m b/sys/geom/raid/g_raid_tr_if.m
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+++ b/sys/geom/raid/g_raid_tr_if.m
@@ -0,0 +1,118 @@
+#-
+# 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 transformation class interface.
+
+INTERFACE g_raid_tr;
+
+# Default implementations of methods.
+CODE {
+	static int
+	g_raid_tr_locked_default(struct g_raid_tr_object *tr, void *argp)
+	{
+
+		return (0);
+	}
+};
+
+HEADER {
+#define G_RAID_TR_TASTE_FAIL		-1
+#define G_RAID_TR_TASTE_SUCCEED		 0
+};
+
+# taste() - volume taste method.
+METHOD int taste {
+	struct g_raid_tr_object *tr;
+	struct g_raid_volume *volume;
+};
+
+# event() - events handling method.
+METHOD int event {
+	struct g_raid_tr_object *tr;
+	struct g_raid_subdisk *sd;
+	u_int event;
+};
+
+# start() - begin operation.
+METHOD int start {
+	struct g_raid_tr_object *tr;
+};
+
+# stop() - stop operation.
+METHOD int stop {
+	struct g_raid_tr_object *tr;
+};
+
+# iorequest() - manage forward transformation and generates requests to disks.
+METHOD void iostart {
+	struct g_raid_tr_object *tr;
+	struct bio *bp;
+};
+
+# iodone() - manages backward transformation and reports completion status.
+METHOD void iodone {
+	struct g_raid_tr_object *tr;
+	struct g_raid_subdisk *sd;
+	struct bio *bp;
+};
+
+# kerneldump() - optimized for rebustness (simplified) kernel dumping routine.
+METHOD int kerneldump {
+	struct g_raid_tr_object *tr;
+	void *virtual;
+	vm_offset_t physical;
+	off_t offset;
+	size_t length;
+} DEFAULT g_raid_tr_kerneldump_common;
+
+# locked() - callback method for lock().
+METHOD int locked {
+	struct g_raid_tr_object *tr;
+	void *argp;
+} DEFAULT g_raid_tr_locked_default;
+
+# free() - destructor.
+METHOD int free {
+	struct g_raid_tr_object *tr;
+};
+
+# idle() - callback when the volume is idle for a while and the TR wants
+# to schedule some work for that idle period.
+METHOD int idle {
+	struct g_raid_tr_object *tr;
+};