WebSVN - shark - Blame - Rev 422 - /shark/trunk/drivers/linuxc26/include/linux/dm-ioctl-v1.h

Rev	Author	Line No.	Line
422	giacomo	1	/*
		2	* Copyright (C) 2001 Sistina Software (UK) Limited.
		3	*
		4	* This file is released under the LGPL.
		5	*/
		6
		7	#ifndef _LINUX_DM_IOCTL_V1_H
		8	#define _LINUX_DM_IOCTL_V1_H
		9
		10	#include <linux/types.h>
		11
		12	#define DM_DIR "mapper" /* Slashes not supported */
		13	#define DM_MAX_TYPE_NAME 16
		14	#define DM_NAME_LEN 128
		15	#define DM_UUID_LEN 129
		16
		17	/*
		18	* Implements a traditional ioctl interface to the device mapper.
		19	*/
		20
		21	/*
		22	* All ioctl arguments consist of a single chunk of memory, with
		23	* this structure at the start. If a uuid is specified any
		24	* lookup (eg. for a DM_INFO) will be done on that, not the
		25	* name.
		26	*/
		27	struct dm_ioctl {
		28	/*
		29	* The version number is made up of three parts:
		30	* major - no backward or forward compatibility,
		31	* minor - only backwards compatible,
		32	* patch - both backwards and forwards compatible.
		33	*
		34	* All clients of the ioctl interface should fill in the
		35	* version number of the interface that they were
		36	* compiled with.
		37	*
		38	* All recognised ioctl commands (ie. those that don't
		39	* return -ENOTTY) fill out this field, even if the
		40	* command failed.
		41	*/
		42	uint32_t version[3]; /* in/out */
		43	uint32_t data_size; /* total size of data passed in
		44	* including this struct */
		45
		46	uint32_t data_start; /* offset to start of data
		47	* relative to start of this struct */
		48
		49	uint32_t target_count; /* in/out */
		50	uint32_t open_count; /* out */
		51	uint32_t flags; /* in/out */
		52
		53	__kernel_old_dev_t dev; /* in/out */
		54
		55	char name[DM_NAME_LEN]; /* device name */
		56	char uuid[DM_UUID_LEN]; /* unique identifier for
		57	* the block device */
		58	};
		59
		60	/*
		61	* Used to specify tables. These structures appear after the
		62	* dm_ioctl.
		63	*/
		64	struct dm_target_spec {
		65	int32_t status; /* used when reading from kernel only */
		66	uint64_t sector_start;
		67	uint32_t length;
		68
		69	/*
		70	* Offset in bytes (from the start of this struct) to
		71	* next target_spec.
		72	*/
		73	uint32_t next;
		74
		75	char target_type[DM_MAX_TYPE_NAME];
		76
		77	/*
		78	* Parameter string starts immediately after this object.
		79	* Be careful to add padding after string to ensure correct
		80	* alignment of subsequent dm_target_spec.
		81	*/
		82	};
		83
		84	/*
		85	* Used to retrieve the target dependencies.
		86	*/
		87	struct dm_target_deps {
		88	uint32_t count;
		89
		90	__kernel_old_dev_t dev[0]; /* out */
		91	};
		92
		93	/*
		94	* If you change this make sure you make the corresponding change
		95	* to dm-ioctl.c:lookup_ioctl()
		96	*/
		97	enum {
		98	/* Top level cmds */
		99	DM_VERSION_CMD = 0,
		100	DM_REMOVE_ALL_CMD,
		101
		102	/* device level cmds */
		103	DM_DEV_CREATE_CMD,
		104	DM_DEV_REMOVE_CMD,
		105	DM_DEV_RELOAD_CMD,
		106	DM_DEV_RENAME_CMD,
		107	DM_DEV_SUSPEND_CMD,
		108	DM_DEV_DEPS_CMD,
		109	DM_DEV_STATUS_CMD,
		110
		111	/* target level cmds */
		112	DM_TARGET_STATUS_CMD,
		113	DM_TARGET_WAIT_CMD
		114	};
		115
		116	#define DM_IOCTL 0xfd
		117
		118	#define DM_VERSION _IOWR(DM_IOCTL, DM_VERSION_CMD, struct dm_ioctl)
		119	#define DM_REMOVE_ALL _IOWR(DM_IOCTL, DM_REMOVE_ALL_CMD, struct dm_ioctl)
		120
		121	#define DM_DEV_CREATE _IOWR(DM_IOCTL, DM_DEV_CREATE_CMD, struct dm_ioctl)
		122	#define DM_DEV_REMOVE _IOWR(DM_IOCTL, DM_DEV_REMOVE_CMD, struct dm_ioctl)
		123	#define DM_DEV_RELOAD _IOWR(DM_IOCTL, DM_DEV_RELOAD_CMD, struct dm_ioctl)
		124	#define DM_DEV_SUSPEND _IOWR(DM_IOCTL, DM_DEV_SUSPEND_CMD, struct dm_ioctl)
		125	#define DM_DEV_RENAME _IOWR(DM_IOCTL, DM_DEV_RENAME_CMD, struct dm_ioctl)
		126	#define DM_DEV_DEPS _IOWR(DM_IOCTL, DM_DEV_DEPS_CMD, struct dm_ioctl)
		127	#define DM_DEV_STATUS _IOWR(DM_IOCTL, DM_DEV_STATUS_CMD, struct dm_ioctl)
		128
		129	#define DM_TARGET_STATUS _IOWR(DM_IOCTL, DM_TARGET_STATUS_CMD, struct dm_ioctl)
		130	#define DM_TARGET_WAIT _IOWR(DM_IOCTL, DM_TARGET_WAIT_CMD, struct dm_ioctl)
		131
		132	#define DM_VERSION_MAJOR 1
		133	#define DM_VERSION_MINOR 0
		134	#define DM_VERSION_PATCHLEVEL 6
		135	#define DM_VERSION_EXTRA "-ioctl (2002-10-15)"
		136
		137	/* Status bits */
		138	#define DM_READONLY_FLAG 0x00000001
		139	#define DM_SUSPEND_FLAG 0x00000002
		140	#define DM_EXISTS_FLAG 0x00000004
		141	#define DM_PERSISTENT_DEV_FLAG 0x00000008
		142
		143	/*
		144	* Flag passed into ioctl STATUS command to get table information
		145	* rather than current status.
		146	*/
		147	#define DM_STATUS_TABLE_FLAG 0x00000010
		148
		149	#endif /* _LINUX_DM_IOCTL_H */

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(root)/shark/trunk/drivers/linuxc26/include/linux/dm-ioctl-v1.h - Rev 422