154 lines
4.6 KiB
C
154 lines
4.6 KiB
C
/* $NetBSD: v7fs_impl.h,v 1.1 2011/06/27 11:52:25 uch Exp $ */
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/*-
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* Copyright (c) 2011 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by UCHIYAMA Yasushi.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/* V7FS implementation. */
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#ifndef _V7FS_IMPL_H_
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#define _V7FS_IMPL_H_
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#ifndef _KERNEL
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#include <stdbool.h>
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#include <assert.h>
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#define KDASSERT(x) assert(x)
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#endif
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struct block_io_ops {
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void *cookie;
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bool (*drive)(void *, uint8_t);
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bool (*read)(void *, uint8_t *, daddr_t);
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bool (*read_n)(void *, uint8_t *, daddr_t, int);
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bool (*write)(void *, uint8_t *, daddr_t);
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bool (*write_n)(void *, uint8_t *, daddr_t, int);
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};
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#ifdef V7FS_EI
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struct endian_conversion_ops {
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uint32_t (*conv32)(uint32_t);
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uint16_t (*conv16)(uint16_t);
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/* For daddr packing */
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v7fs_daddr_t (*conv24read)(uint8_t *);
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void (*conv24write)(v7fs_daddr_t, uint8_t *);
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};
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#endif
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#ifdef _KERNEL
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#define V7FS_LOCK
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#endif
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#ifdef V7FS_LOCK
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struct lock_ops {
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void *cookie;
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void (*lock)(void*);
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void (*unlock)(void *);
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};
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#define SUPERB_LOCK(x) ((x)->sb_lock.lock((x)->sb_lock.cookie))
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#define SUPERB_UNLOCK(x) ((x)->sb_lock.unlock((x)->sb_lock.cookie))
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#define ILIST_LOCK(x) ((x)->ilist_lock.lock((x)->ilist_lock.cookie))
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#define ILIST_UNLOCK(x) ((x)->ilist_lock.unlock((x)->ilist_lock.cookie))
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#define MEM_LOCK(x) ((x)->mem_lock.lock((x)->mem_lock.cookie))
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#define MEM_UNLOCK(x) ((x)->mem_lock.unlock((x)->mem_lock.cookie))
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#else /*V7FS_LOCK */
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#define SUPERB_LOCK(x) ((void)0)
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#define SUPERB_UNLOCK(x) ((void)0)
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#define ILIST_LOCK(x) ((void)0)
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#define ILIST_UNLOCK(x) ((void)0)
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#define MEM_LOCK(x) ((void)0)
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#define MEM_UNLOCK(x) ((void)0)
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#endif /*V7FS_LOCK */
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struct v7fs_stat {
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int32_t total_blocks;
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int32_t free_blocks;
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int32_t total_inode;
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int32_t free_inode;
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int32_t total_files;
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};
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struct v7fs_fileattr {
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int16_t uid;
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int16_t gid;
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v7fs_mode_t mode;
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v7fs_dev_t device;
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v7fs_time_t ctime;
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v7fs_time_t mtime;
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v7fs_time_t atime;
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};
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struct v7fs_self {
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#define V7FS_SELF_NSCRATCH 3
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uint8_t scratch[V7FS_SELF_NSCRATCH][V7FS_BSIZE];
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int scratch_free; /* free block bitmap. */
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int scratch_remain; /* for statistic */
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struct block_io_ops io;
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#ifdef V7FS_EI
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struct endian_conversion_ops val;
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#endif
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#ifdef V7FS_LOCK
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/* in-core superblock access. (freeblock/freeinode) split? -uch */
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struct lock_ops sb_lock;
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struct lock_ops ilist_lock; /* disk ilist access. */
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struct lock_ops mem_lock; /* work memory allocation lock. */
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#endif
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struct v7fs_superblock superblock;
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struct v7fs_stat stat;
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int endian;
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};
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struct v7fs_mount_device {
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union {
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void *vnode; /* NetBSD kernel */
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int fd; /* NetBSD newfs,fsck */
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const char *filename;/* misc test */
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} device;
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daddr_t sectors; /*total size in sector. */
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int endian;
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};
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#define V7FS_ITERATOR_BREAK (-1)
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#define V7FS_ITERATOR_END (-2)
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#define V7FS_ITERATOR_ERROR (-3)
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__BEGIN_DECLS
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int v7fs_io_init(struct v7fs_self **, const struct v7fs_mount_device *, size_t);
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void v7fs_io_fini(struct v7fs_self *);
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void *scratch_read(struct v7fs_self *, daddr_t);
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void scratch_free(struct v7fs_self *, void *);
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int scratch_remain(const struct v7fs_self *);
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__END_DECLS
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#if 0
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#define V7FS_IO_DEBUG
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#define V7FS_SUPERBLOCK_DEBUG
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#define V7FS_DATABLOCK_DEBUG
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#define V7FS_INODE_DEBUG
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#define V7FS_DIRENT_DEBUG
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#define V7FS_FILE_DEBUG
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#define V7FS_VFSOPS_DEBUG
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#define V7FS_VNOPS_DEBUG
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#endif
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#endif /*!_V7FS_IMPL_H_ */
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