1 /* $NetBSD: v7fs_impl.h,v 1.1 2011/06/27 11:52:25 uch Exp $ */ 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 42 struct 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 52 struct 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 64 struct 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 84 struct 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 92 struct 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 }; 101 102 struct 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 }; 121 122 struct 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 136 int v7fs_io_init(struct v7fs_self **, const struct v7fs_mount_device *, size_t); 137 void v7fs_io_fini(struct v7fs_self *); 138 void *scratch_read(struct v7fs_self *, daddr_t); 139 void scratch_free(struct v7fs_self *, void *); 140 int 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