95 lines
3.3 KiB
C
95 lines
3.3 KiB
C
/* $NetBSD: storage.h,v 1.3 2006/02/16 19:19:38 agc Exp $ */
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/*
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* Copyright © 2006 Alistair Crooks. All rights reserved.
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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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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef STORAGE_H_
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#define STORAGE_H_
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#include "defs.h"
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enum {
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DE_EXTENT,
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DE_DEVICE
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};
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/* a device can be made up of an extent or another device */
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typedef struct disc_de_t {
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int32_t type; /* device or extent */
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uint64_t size; /* size of underlying extent or device */
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union {
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struct disc_extent_t *xp; /* pointer to extent */
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struct disc_device_t *dp; /* pointer to device */
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} u;
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} disc_de_t;
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/* this struct describes an extent of storage */
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typedef struct disc_extent_t {
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char *extent; /* extent name */
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char *dev; /* device associated with it */
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uint64_t sacred; /* offset of extent from start of device */
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uint64_t len; /* size of extent */
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int fd; /* in-core file descriptor */
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int used; /* extent has been used in a device */
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} disc_extent_t;
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DEFINE_ARRAY(extv_t, disc_extent_t);
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/* this struct describes a device */
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typedef struct disc_device_t {
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char *dev; /* device name */
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int raid; /* RAID level */
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uint64_t off; /* current offset in device */
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uint64_t len; /* size of device */
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uint32_t size; /* size of device/extent array */
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uint32_t c; /* # of entries in device/extents */
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disc_de_t *xv; /* device/extent array */
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int used; /* device has been used in a device/target */
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} disc_device_t;
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DEFINE_ARRAY(devv_t, disc_device_t);
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enum {
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TARGET_READONLY = 0x01
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};
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/* this struct describes an iscsi target's associated features */
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typedef struct disc_target_t {
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char *target; /* target name */
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disc_de_t de; /* pointer to its device */
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uint16_t port; /* port to listen on */
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char *mask; /* mask to export it to */
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uint32_t flags; /* any flags */
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} disc_target_t;
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DEFINE_ARRAY(targv_t, disc_target_t);
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int read_conf_file(const char *, targv_t *, devv_t *, extv_t *);
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void write_pid_file(const char *);
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#endif /* !STORAGE_H_ */
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