1/* $NetBSD$ */ 2 3/*- 4 * Copyright (c) 2011 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by UCHIYAMA Yasushi. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32/* V7FS implementation. */ 33#ifndef _V7FS_IMPL_H_ 34#define _V7FS_IMPL_H_ 35 36#ifndef _KERNEL 37#include <stdbool.h> 38#include <assert.h> 39#define KDASSERT(x) assert(x) 40#endif 41 42struct block_io_ops { 43 void *cookie; 44 bool (*drive)(void *, uint8_t); 45 bool (*read)(void *, uint8_t *, daddr_t); 46 bool (*read_n)(void *, uint8_t *, daddr_t, int); 47 bool (*write)(void *, uint8_t *, daddr_t); 48 bool (*write_n)(void *, uint8_t *, daddr_t, int); 49}; 50 51#ifdef V7FS_EI 52struct endian_conversion_ops { 53 uint32_t (*conv32)(uint32_t); 54 uint16_t (*conv16)(uint16_t); 55 /* For daddr packing */ 56 v7fs_daddr_t (*conv24read)(uint8_t *); 57 void (*conv24write)(v7fs_daddr_t, uint8_t *); 58}; 59#endif 60#ifdef _KERNEL 61#define V7FS_LOCK 62#endif 63#ifdef V7FS_LOCK 64struct lock_ops { 65 void *cookie; 66 void (*lock)(void*); 67 void (*unlock)(void *); 68}; 69#define SUPERB_LOCK(x) ((x)->sb_lock.lock((x)->sb_lock.cookie)) 70#define SUPERB_UNLOCK(x) ((x)->sb_lock.unlock((x)->sb_lock.cookie)) 71#define ILIST_LOCK(x) ((x)->ilist_lock.lock((x)->ilist_lock.cookie)) 72#define ILIST_UNLOCK(x) ((x)->ilist_lock.unlock((x)->ilist_lock.cookie)) 73#define MEM_LOCK(x) ((x)->mem_lock.lock((x)->mem_lock.cookie)) 74#define MEM_UNLOCK(x) ((x)->mem_lock.unlock((x)->mem_lock.cookie)) 75#else /*V7FS_LOCK */ 76#define SUPERB_LOCK(x) ((void)0) 77#define SUPERB_UNLOCK(x) ((void)0) 78#define ILIST_LOCK(x) ((void)0) 79#define ILIST_UNLOCK(x) ((void)0) 80#define MEM_LOCK(x) ((void)0) 81#define MEM_UNLOCK(x) ((void)0) 82#endif /*V7FS_LOCK */ 83 84struct v7fs_stat { 85 int32_t total_blocks; 86 int32_t free_blocks; 87 int32_t total_inode; 88 int32_t free_inode; 89 int32_t total_files; 90}; 91 92struct v7fs_fileattr { 93 int16_t uid; 94 int16_t gid; 95 v7fs_mode_t mode; 96 v7fs_dev_t device; 97 v7fs_time_t ctime; 98 v7fs_time_t mtime; 99 v7fs_time_t atime; 100}; 101 102struct v7fs_self { 103#define V7FS_SELF_NSCRATCH 3 104 uint8_t scratch[V7FS_SELF_NSCRATCH][V7FS_BSIZE]; 105 int scratch_free; /* free block bitmap. */ 106 int scratch_remain; /* for statistic */ 107 struct block_io_ops io; 108#ifdef V7FS_EI 109 struct endian_conversion_ops val; 110#endif 111#ifdef V7FS_LOCK 112 /* in-core superblock access. (freeblock/freeinode) split? -uch */ 113 struct lock_ops sb_lock; 114 struct lock_ops ilist_lock; /* disk ilist access. */ 115 struct lock_ops mem_lock; /* work memory allocation lock. */ 116#endif 117 struct v7fs_superblock superblock; 118 struct v7fs_stat stat; 119 int endian; 120}; 121 122struct v7fs_mount_device { 123 union { 124 void *vnode; /* NetBSD kernel */ 125 int fd; /* NetBSD newfs,fsck */ 126 const char *filename;/* misc test */ 127 } device; 128 daddr_t sectors; /*total size in sector. */ 129 int endian; 130}; 131 132#define V7FS_ITERATOR_BREAK (-1) 133#define V7FS_ITERATOR_END (-2) 134#define V7FS_ITERATOR_ERROR (-3) 135__BEGIN_DECLS 136int v7fs_io_init(struct v7fs_self **, const struct v7fs_mount_device *, size_t); 137void v7fs_io_fini(struct v7fs_self *); 138void *scratch_read(struct v7fs_self *, daddr_t); 139void scratch_free(struct v7fs_self *, void *); 140int scratch_remain(const struct v7fs_self *); 141__END_DECLS 142 143#if 0 144#define V7FS_IO_DEBUG 145#define V7FS_SUPERBLOCK_DEBUG 146#define V7FS_DATABLOCK_DEBUG 147#define V7FS_INODE_DEBUG 148#define V7FS_DIRENT_DEBUG 149#define V7FS_FILE_DEBUG 150#define V7FS_VFSOPS_DEBUG 151#define V7FS_VNOPS_DEBUG 152#endif 153 154#endif /*!_V7FS_IMPL_H_ */ 155