/* $NetBSD: storage.h,v 1.3 2009/06/30 02:44:52 agc Exp $ */
/*
* Copyright � 2006 Alistair Crooks. 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.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* 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.
*/
#ifndef STORAGE_H_
#define STORAGE_H_
#include "defs.h"
/* Length of a node address (an IEEE 802 address). */
#define NB_UUID_NODE_LEN 6
/*
* See also:
*
http://www.opengroup.org/dce/info/draft-leach-uuids-guids-01.txt
*
http://www.opengroup.org/onlinepubs/009629399/apdxa.htm
*
* A DCE 1.1 compatible source representation of UUIDs.
*/
typedef struct nbuuid_t {
uint32_t time_low;
uint16_t time_mid;
uint16_t time_hi_and_version;
uint8_t clock_seq_hi_and_reserved;
uint8_t clock_seq_low;
uint8_t node[NB_UUID_NODE_LEN];
} nbuuid_t;
void nbuuid_create(nbuuid_t *, uint32_t *);
void nbuuid_to_string(nbuuid_t *, char **, uint32_t *);
enum {
DE_EXTENT,
DE_DEVICE
};
/* a device can be made up of an extent or another device */
typedef struct disc_de_t {
int32_t type; /* device or extent */
uint64_t size; /* size of underlying extent or device */
union {
struct disc_extent_t *xp; /* pointer to extent */
struct disc_device_t *dp; /* pointer to device */
} u;
} disc_de_t;
/* this struct describes an extent of storage */
typedef struct disc_extent_t {
char *extent; /* extent name */
char *dev; /* device associated with it */
uint64_t sacred; /* offset of extent from start of dev */
uint64_t len; /* size of extent */
int fd; /* in-core file descriptor */
int used; /* extent has been used in a device */
} disc_extent_t;
DEFINE_ARRAY(extv_t, disc_extent_t);
/* this struct describes a device */
typedef struct disc_device_t {
char *dev; /* device name */
int raid; /* RAID level */
uint64_t off; /* current offset in device */
uint64_t len; /* size of device */
uint32_t size; /* size of device/extent array */
uint32_t c; /* # of entries in device/extents */
disc_de_t *xv; /* device/extent array */
int used; /* device has been used in a device/target */
} disc_device_t;
DEFINE_ARRAY(devv_t, disc_device_t);
enum {
TARGET_READONLY = 0x01
};
/* this struct describes an iscsi target's associated features */
typedef struct disc_target_t {
char *target; /* target name */
disc_de_t de; /* pointer to its device */
uint16_t port; /* port to listen on */
char *mask; /* mask to export it to */
uint32_t flags; /* any flags */
uint16_t tsih; /* target session identifying handle */
char *iqn; /* assigned iqn - can be NULL */
} disc_target_t;
DEFINE_ARRAY(targv_t, disc_target_t);
int read_conf_file(const char *, targv_t *, devv_t *, extv_t *);
#endif /* !STORAGE_H_ */
