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/* $NetBSD: v7fs_impl.h,v 1.1 2011/06/27 11:52:25 uch Exp $ */
/*-
* Copyright (c) 2011 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by UCHIYAMA Yasushi.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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.
*/
/* V7FS implementation. */
#ifndef _V7FS_IMPL_H_
#define _V7FS_IMPL_H_
#ifndef _KERNEL
#include <stdbool.h>
#include <assert.h>
#define KDASSERT(x) assert(x)
#endif
struct block_io_ops {
void *cookie;
bool (*drive)(void *, uint8_t);
bool (*read)(void *, uint8_t *, daddr_t);
bool (*read_n)(void *, uint8_t *, daddr_t, int);
bool (*write)(void *, uint8_t *, daddr_t);
bool (*write_n)(void *, uint8_t *, daddr_t, int);
};
#ifdef V7FS_EI
struct endian_conversion_ops {
uint32_t (*conv32)(uint32_t);
uint16_t (*conv16)(uint16_t);
/* For daddr packing */
v7fs_daddr_t (*conv24read)(uint8_t *);
void (*conv24write)(v7fs_daddr_t, uint8_t *);
};
#endif
#ifdef _KERNEL
#define V7FS_LOCK
#endif
#ifdef V7FS_LOCK
struct lock_ops {
void *cookie;
void (*lock)(void*);
void (*unlock)(void *);
};
#define SUPERB_LOCK(x) ((x)->sb_lock.lock((x)->sb_lock.cookie))
#define SUPERB_UNLOCK(x) ((x)->sb_lock.unlock((x)->sb_lock.cookie))
#define ILIST_LOCK(x) ((x)->ilist_lock.lock((x)->ilist_lock.cookie))
#define ILIST_UNLOCK(x) ((x)->ilist_lock.unlock((x)->ilist_lock.cookie))
#define MEM_LOCK(x) ((x)->mem_lock.lock((x)->mem_lock.cookie))
#define MEM_UNLOCK(x) ((x)->mem_lock.unlock((x)->mem_lock.cookie))
#else /*V7FS_LOCK */
#define SUPERB_LOCK(x) ((void)0)
#define SUPERB_UNLOCK(x) ((void)0)
#define ILIST_LOCK(x) ((void)0)
#define ILIST_UNLOCK(x) ((void)0)
#define MEM_LOCK(x) ((void)0)
#define MEM_UNLOCK(x) ((void)0)
#endif /*V7FS_LOCK */
struct v7fs_stat {
int32_t total_blocks;
int32_t free_blocks;
int32_t total_inode;
int32_t free_inode;
int32_t total_files;
};
struct v7fs_fileattr {
int16_t uid;
int16_t gid;
v7fs_mode_t mode;
v7fs_dev_t device;
v7fs_time_t ctime;
v7fs_time_t mtime;
v7fs_time_t atime;
};
struct v7fs_self {
#define V7FS_SELF_NSCRATCH 3
uint8_t scratch[V7FS_SELF_NSCRATCH][V7FS_BSIZE];
int scratch_free; /* free block bitmap. */
int scratch_remain; /* for statistic */
struct block_io_ops io;
#ifdef V7FS_EI
struct endian_conversion_ops val;
#endif
#ifdef V7FS_LOCK
/* in-core superblock access. (freeblock/freeinode) split? -uch */
struct lock_ops sb_lock;
struct lock_ops ilist_lock; /* disk ilist access. */
struct lock_ops mem_lock; /* work memory allocation lock. */
#endif
struct v7fs_superblock superblock;
struct v7fs_stat stat;
int endian;
};
struct v7fs_mount_device {
union {
void *vnode; /* NetBSD kernel */
int fd; /* NetBSD newfs,fsck */
const char *filename;/* misc test */
} device;
daddr_t sectors; /*total size in sector. */
int endian;
};
#define V7FS_ITERATOR_BREAK (-1)
#define V7FS_ITERATOR_END (-2)
#define V7FS_ITERATOR_ERROR (-3)
__BEGIN_DECLS
int v7fs_io_init(struct v7fs_self **, const struct v7fs_mount_device *, size_t);
void v7fs_io_fini(struct v7fs_self *);
void *scratch_read(struct v7fs_self *, daddr_t);
void scratch_free(struct v7fs_self *, void *);
int scratch_remain(const struct v7fs_self *);
__END_DECLS
#if 0
#define V7FS_IO_DEBUG
#define V7FS_SUPERBLOCK_DEBUG
#define V7FS_DATABLOCK_DEBUG
#define V7FS_INODE_DEBUG
#define V7FS_DIRENT_DEBUG
#define V7FS_FILE_DEBUG
#define V7FS_VFSOPS_DEBUG
#define V7FS_VNOPS_DEBUG
#endif
#endif /*!_V7FS_IMPL_H_ */
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