adosfs.h revision 1.1
1 /* $NetBSD: adosfs.h,v 1.1 2002/12/23 17:15:26 jdolecek Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Christian E. Hopps 5 * Copyright (c) 1996 Matthias Scheler 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Christian E. Hopps. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * Arguments to mount amigados filesystems. 36 */ 37 struct adosfs_args { 38 char *fspec; /* blocks special holding the fs to mount */ 39 struct export_args export; /* network export information */ 40 uid_t uid; /* uid that owns adosfs files */ 41 gid_t gid; /* gid that owns adosfs files */ 42 mode_t mask; /* mask to be applied for adosfs perms */ 43 }; 44 45 #ifdef _KERNEL 46 #include <miscfs/genfs/genfs_node.h> 47 48 /* 49 * Amigados datestamp. (from 1/1/1978 00:00:00 local) 50 */ 51 struct datestamp { 52 u_int32_t days; 53 u_int32_t mins; 54 u_int32_t ticks; /* 20000 * (ticks % 50) = useconds */ 55 /* ticks / 50 = seconds */ 56 }; 57 58 enum anode_type { AROOT, ADIR, AFILE, ALDIR, ALFILE, ASLINK }; 59 60 /* 61 * similar to inode's, we use to represent: 62 * the root dir, reg dirs, reg files and extension blocks 63 * note the ``tab'' is a hash table for r/d, and a data block 64 * table for f/e. it is always ANODETABSZ(ap) bytes in size. 65 */ 66 struct anode { 67 struct genfs_node gnode; 68 LIST_ENTRY(anode) link; 69 enum anode_type type; 70 char name[31]; /* (r/d/f) name for object */ 71 struct datestamp mtimev; /* (r) volume modified */ 72 struct datestamp created; /* (r) volume created */ 73 struct datestamp mtime; /* (r/d/f) last modified */ 74 struct adosfsmount *amp; /* owner file system */ 75 struct vnode *vp; /* owner vnode */ 76 u_long fsize; /* (f) size of file in bytes */ 77 u_long block; /* block num */ 78 u_long pblock; /* (d/f/e) parent block */ 79 u_long hashf; /* (d/f) hash forward */ 80 u_long extb; /* (f/e) extension block number */ 81 u_long linkto; /* (hd/hf) header this link points at */ 82 u_long linknext; /* (d/f/hd/hf) next link (or head) in chain */ 83 u_long lastlindblk; /* (f/hf) last logical indirect block */ 84 u_long lastindblk; /* (f/hf) last indirect block read */ 85 u_long *tab; /* (r/d) hash table */ 86 int *tabi; /* (r/d) table info */ 87 int ntabent; /* (r/d) number of entries in table */ 88 int nwords; /* size of blocks in long words */ 89 int adprot; /* (d/f) amigados protection bits */ 90 uid_t uid; /* (d/f) uid of directory/file */ 91 gid_t gid; /* (d/f) gid of directory/file */ 92 int flags; /* misc flags */ 93 char *slinkto; /* name of file or dir */ 94 }; 95 #define VTOA(vp) ((struct anode *)(vp)->v_data) 96 #define ATOV(ap) ((ap)->vp) 97 #define ANODETABSZ(ap) (((ap)->nwords - 56) * sizeof(long)) 98 #define ANODETABENT(ap) ((ap)->nwords - 56) 99 #define ANODENDATBLKENT(ap) ((ap)->nwords - 56) 100 101 /* 102 * mount data 103 */ 104 #define ANODEHASHSZ (512) 105 106 struct adosfsmount { 107 LIST_HEAD(anodechain, anode) anodetab[ANODEHASHSZ]; 108 struct mount *mp; /* owner mount */ 109 u_int32_t dostype; /* type of volume */ 110 u_long rootb; /* root block number */ 111 u_long secsperblk; /* sectors per block */ 112 u_long bsize; /* size of blocks */ 113 u_long nwords; /* size of blocks in long words */ 114 u_long dbsize; /* data bytes per block */ 115 uid_t uid; /* uid of mounting user */ 116 gid_t gid; /* gid of mounting user */ 117 u_long mask; /* mode mask */ 118 struct vnode *devvp; /* blk device mounted on */ 119 struct vnode *rootvp; /* out root vnode */ 120 struct netexport export; 121 u_long *bitmap; /* allocation bitmap */ 122 u_long numblks; /* number of usable blocks */ 123 u_long freeblks; /* number of free blocks */ 124 }; 125 126 #define VFSTOADOSFS(mp) ((struct adosfsmount *)(mp)->mnt_data) 127 128 #define IS_FFS(amp) ((amp)->dostype & 1) 129 #define IS_INTER(amp) (((amp)->dostype & 7) > 1) 130 131 /* 132 * AmigaDOS block stuff. 133 */ 134 #define BBOFF (0) 135 136 #define BPT_SHORT ((u_int32_t)2) 137 #define BPT_DATA ((u_int32_t)8) 138 #define BPT_LIST ((u_int32_t)16) 139 140 #define BST_RDIR ((u_int32_t)1) 141 #define BST_UDIR ((u_int32_t)2) 142 #define BST_SLINK ((u_int32_t)3) 143 #define BST_LDIR ((u_int32_t)4) 144 #define BST_FILE ((u_int32_t)-3) 145 #define BST_LFILE ((u_int32_t)-4) 146 147 #define OFS_DATA_OFFSET (24) 148 149 extern struct pool adosfs_node_pool; 150 151 /* 152 * utility protos 153 */ 154 #if BYTE_ORDER != BIG_ENDIAN 155 u_int32_t adoswordn __P((struct buf *, int)); 156 #else 157 #define adoswordn(bp,wn) (*((u_int32_t *)(bp)->b_data + (wn))) 158 #endif 159 160 u_int32_t adoscksum __P((struct buf *, int)); 161 int adoscaseequ __P((const u_char *, const u_char *, int, int)); 162 int adoshash __P((const u_char *, int, int, int)); 163 int adunixprot __P((int)); 164 int adosfs_getblktype __P((struct adosfsmount *, struct buf *)); 165 166 struct vnode *adosfs_ahashget __P((struct mount *, ino_t)); 167 void adosfs_ainshash __P((struct adosfsmount *, struct anode *)); 168 void adosfs_aremhash __P((struct anode *)); 169 170 int adosfs_lookup __P((void *)); 171 172 extern int (**adosfs_vnodeop_p) __P((void *)); 173 #endif /* _KERNEL */ 174
Indexes created Mon Sep 29 21:09:56 GMT 2025