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authorhaad <haad@NetBSD.org>2008-12-19 15:24:03 +0000
committerhaad <haad@NetBSD.org>2008-12-19 15:24:03 +0000
commitc9d0c62a0c2516f692248741b9902592dfd4f690 (patch)
treedf3160366e6de1d5dc788216cbed8f3cad3e04fe /sys/dev/dm/dm_target_error.c
parent992269c5c4ca1327588284bd09118ceb10888690 (diff)
Merge the haad-dm branch to -current. This branch adds LVM functionality to
the base NetBSD system. It uses Linux LVM2 tools and our BSD licensed device-mapper driver. The device-mapper driver can be used to create virtual block devices which maps virtual blocks to real with target mapping called target. Currently these targets are available a linear, zero, error and a snapshot (this is work in progress and doesn't work yet). The lvm2tools adds lvm and dmsetup binary to based system, where the lvm tool is used to manage and administer whole LVM and the dmestup is used to communicate iwith device-mapper kernel driver. With these tools also a libdevmapper library is instaled to the base system. Building of tools and driver is currently disable and can be enabled with MKLVM=yes in mk.conf. I will add sets lists and rc.d script soon. Oked by agc@ and cube@.
Diffstat (limited to 'sys/dev/dm/dm_target_error.c')
-rw-r--r--sys/dev/dm/dm_target_error.c99
1 files changed, 99 insertions, 0 deletions
diff --git a/sys/dev/dm/dm_target_error.c b/sys/dev/dm/dm_target_error.c
new file mode 100644
index 00000000000..09efdf703ea
--- /dev/null
+++ b/sys/dev/dm/dm_target_error.c
@@ -0,0 +1,99 @@
+/* $NetBSD: dm_target_error.c,v 1.2 2008/12/19 15:24:03 haad Exp $ */
+
+/*
+ * Copyright (c) 2008 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Adam Hamsik.
+ *
+ * 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``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 FOUNDATION OR CONTRIBUTORS
+ * 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.
+ */
+
+/*
+ * This file implements initial version of device-mapper error target.
+ */
+#include <sys/types.h>
+#include <sys/param.h>
+
+#include <sys/buf.h>
+
+#include "dm.h"
+
+/* Init function called from dm_table_load_ioctl. */
+int
+dm_target_error_init(dm_dev_t *dmv, void **target_config, char *argv)
+{
+
+ printf("Error target init function called!!\n");
+
+ *target_config = NULL;
+
+ dmv->dev_type = DM_ERROR_DEV;
+
+ return 0;
+}
+
+/* Status routine called to get params string. */
+char *
+dm_target_error_status(void *target_config)
+{
+ return NULL;
+}
+
+/* Strategy routine called from dm_strategy. */
+int
+dm_target_error_strategy(dm_table_entry_t *table_en, struct buf *bp)
+{
+
+ printf("Error target read function called!!\n");
+
+ bp->b_error = EIO;
+ bp->b_resid = 0;
+
+ biodone(bp);
+
+ return 0;
+}
+
+/* Doesn't do anything here. */
+int
+dm_target_error_destroy(dm_table_entry_t *table_en)
+{
+ table_en->target_config = NULL;
+
+ return 0;
+}
+
+/* Doesn't not need to do anything here. */
+int
+dm_target_error_deps(dm_table_entry_t *table_en, prop_array_t prop_array)
+{
+ return 0;
+}
+
+/* Unsupported for this target. */
+int
+dm_target_error_upcall(dm_table_entry_t *table_en, struct buf *bp)
+{
+ return 0;
+}