97 lines
3.4 KiB
C
97 lines
3.4 KiB
C
/* $NetBSD: storage.h,v 1.5 2007/12/09 09:16:42 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"
|
|
|
|
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 device */
|
|
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 *);
|
|
void write_pid_file(const char *);
|
|
|
|
#endif /* !STORAGE_H_ */
|