266 lines
6.6 KiB
C
266 lines
6.6 KiB
C
/* $NetBSD: netbsd-dm.h,v 1.6 2009/12/05 11:30:26 haad Exp $ */
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/*
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* Copyright (c) 2008 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Adam Hamsik.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __NETBSD_DM_H__
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#define __NETBSD_DM_H__
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#include <prop/proplib.h>
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#define DM_CMD_LEN 16
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#define DM_IOCTL 0xfd
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#define DM_IOCTL_CMD 0
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#define NETBSD_DM_IOCTL _IOWR(DM_IOCTL, DM_IOCTL_CMD, struct plistref)
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/*
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* DM-ioctl dictionary.
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*
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* This contains general information about dm device.
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*
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* <dict>
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* <key>command</key>
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* <string>...</string>
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*
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* <key>event_nr</key>
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* <integer>...</integer>
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*
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* <key>name</key>
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* <string>...</string>
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*
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* <key>uuid</key>
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* <string>...</string>
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*
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* <key>dev</key>
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* <integer></integer>
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*
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* <key>flags</key>
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* <integer></integer>
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*
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* <key>version</key>
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* <array>
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* <integer>...</integer>
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* <integer>...</integer>
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* <integer>...</integer>
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* </array>
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*
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* <key>cmd_data</key>
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* <array>
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* <!-- See below for command
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* specific dictionaries -->
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* </array>
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* </dict>
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*
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* Available commands from _cmd_data_v4.
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*
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* create, reload, remove, remove_all, suspend,
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* resume, info, deps, rename, version, status,
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* table, waitevent, names, clear, mknodes,
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* targets, message, setgeometry
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*
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*/
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/*
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* DM_LIST_VERSIONS == "targets" command dictionary entry.
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* Lists all available targets with their version.
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*
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* <array>
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* <dict>
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* <key>name<key>
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* <string>...</string>
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*
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* <key>version</key>
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* <array>
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* <integer>...</integer>
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* <integer>...</integer>
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* <integer>...</integer>
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* </array>
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* </dict>
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* </array>
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*
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*/
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/*
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* DM_DEV_LIST == "names"
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* Request list of device-mapper created devices from kernel.
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*
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* <array>
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* <dict>
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* <key>name<key>
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* <string>...</string>
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*
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* <key>dev</key>
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* <integer>...</integer>
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* </dict>
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* </array>
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*
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* dev is uint64_t
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*
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*/
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/*
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* DM_DEV_RENAME == "rename"
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* Rename device to string.
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*
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* <array>
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* <string>...</string>
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* </array>
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*
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*/
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/*
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* DM_DEV_STATUS == "info, mknodes"
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* Will change fields DM_IOCTL_OPEN, DM_IOCTL_DEV in received dictionary,
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* with dm device values with name or uuid from list.
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*
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*/
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/*
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* DM_TABLE_STATUS == "status,table"
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* Request list of device-mapper created devices from kernel.
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*
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* <array>
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* <dict>
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* <key>type<key>
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* <string>...</string>
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*
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* <key>start</key>
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* <integer>...</integer>
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*
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* <key>length</key>
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* <integer>...</integer>
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*
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* <key>params</key>
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* <string>...</string>
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* </dict>
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* </array>
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*
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* params is string which contains {device} {parameters}
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*
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*/
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/*
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* DM_TABLE_DEPS == "deps"
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* Request list active table device dependiences.
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*
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* This command is also run to get dm-device
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* dependiences for existing real block device.
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*
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* eg. vgcreate calls DM_TABLE_DEPS
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*
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* <array>
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* <integer>...</integer>
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* </array>
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*
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*/
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#define DM_IOCTL_COMMAND "command"
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#define DM_IOCTL_VERSION "version"
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#define DM_IOCTL_OPEN "open_count"
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#define DM_IOCTL_MINOR "minor"
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#define DM_IOCTL_NAME "name"
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#define DM_IOCTL_UUID "uuid"
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#define DM_IOCTL_TARGET_COUNT "target_count"
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#define DM_IOCTL_EVENT "event_nr"
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#define DM_IOCTL_FLAGS "flags"
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#define DM_IOCTL_CMD_DATA "cmd_data"
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#define DM_TARGETS_NAME "name"
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#define DM_TARGETS_VERSION "ver"
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#define DM_DEV_NEWNAME "newname"
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#define DM_DEV_NAME "name"
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#define DM_DEV_DEV "dev"
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#define DM_TABLE_TYPE "type"
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#define DM_TABLE_START "start"
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#define DM_TABLE_STAT "status"
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#define DM_TABLE_LENGTH "length"
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#define DM_TABLE_PARAMS "params"
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//#ifndef __LIB_DEVMAPPER__
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//#define DM_TABLE_DEPS "deps"
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//#endif
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/* Status bits */
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/* IO mode of device */
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#define DM_READONLY_FLAG (1 << 0) /* In/Out *//* to kernel/from kernel */
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#define DM_SUSPEND_FLAG (1 << 1) /* In/Out */
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/* XXX. This flag is undocumented. */
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#define DM_EXISTS_FLAG (1 << 2) /* In/Out */
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/* Minor number is persistent */
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#define DM_PERSISTENT_DEV_FLAG (1 << 3) /* In */
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/*
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* Flag passed into ioctl STATUS command to get table information
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* rather than current status.
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*/
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#define DM_STATUS_TABLE_FLAG (1 << 4) /* In */
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/*
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* Flags that indicate whether a table is present in either of
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* the two table slots that a device has.
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*/
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#define DM_ACTIVE_PRESENT_FLAG (1 << 5) /* Out */
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#define DM_INACTIVE_PRESENT_FLAG (1 << 6) /* Out */
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/*
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* Indicates that the buffer passed in wasn't big enough for the
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* results.
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*/
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#define DM_BUFFER_FULL_FLAG (1 << 8) /* Out */
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/*
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* This flag is now ignored.
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*/
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#define DM_SKIP_BDGET_FLAG (1 << 9) /* In */
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/*
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* Set this to avoid attempting to freeze any filesystem when suspending.
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*/
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#define DM_SKIP_LOCKFS_FLAG (1 << 10) /* In */
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/*
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* Set this to suspend without flushing queued ios.
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*/
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#define DM_NOFLUSH_FLAG (1 << 11) /* In */
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/*
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* If set, any table information returned will relate to the inactive
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* table instead of the live one. Always check DM_INACTIVE_PRESENT_FLAG
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* is set before using the data returned.
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*/
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#define DM_QUERY_INACTIVE_TABLE_FLAG (1 << 12) /* In */
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#endif /* __NETBSD_DM_H__ */
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