adosfs.h revision 1.7
1 /* $NetBSD: adosfs.h,v 1.7 2005/09/25 21:17:05 jmmv 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_args30 _pad1; /* compat with old userland tools */ 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 <sys/mallocvar.h> 47 #include <miscfs/genfs/genfs_node.h> 48 49 MALLOC_DECLARE(M_ANODE); 50 51 /* 52 * Amigados datestamp. (from 1/1/1978 00:00:00 local) 53 */ 54 struct datestamp { 55 u_int32_t days; 56 u_int32_t mins; 57 u_int32_t ticks; /* 20000 * (ticks % 50) = useconds */ 58 /* ticks / 50 = seconds */ 59 }; 60 61 enum anode_type { AROOT, ADIR, AFILE, ALDIR, ALFILE, ASLINK }; 62 63 /* Maximum file/directory name */ 64 #define ADMAXNAMELEN 30 65 66 /* 67 * similar to inode's, we use to represent: 68 * the root dir, reg dirs, reg files and extension blocks 69 * note the ``tab'' is a hash table for r/d, and a data block 70 * table for f/e. it is always ANODETABSZ(ap) bytes in size. 71 */ 72 struct anode { 73 struct genfs_node gnode; 74 LIST_ENTRY(anode) link; 75 enum anode_type type; 76 char name[ADMAXNAMELEN+1]; /* (r/d/f) name for object */ 77 struct datestamp mtimev; /* (r) volume modified */ 78 struct datestamp created; /* (r) volume created */ 79 struct datestamp mtime; /* (r/d/f) last modified */ 80 struct adosfsmount *amp; /* owner file system */ 81 struct vnode *vp; /* owner vnode */ 82 u_long fsize; /* (f) size of file in bytes */ 83 u_long block; /* block num */ 84 u_long pblock; /* (d/f/e) parent block */ 85 u_long hashf; /* (d/f) hash forward */ 86 u_long extb; /* (f/e) extension block number */ 87 u_long linkto; /* (hd/hf) header this link points at */ 88 u_long linknext; /* (d/f/hd/hf) next link (or head) in chain */ 89 u_long lastlindblk; /* (f/hf) last logical indirect block */ 90 u_long lastindblk; /* (f/hf) last indirect block read */ 91 u_long *tab; /* (r/d) hash table */ 92 int *tabi; /* (r/d) table info */ 93 int ntabent; /* (r/d) number of entries in table */ 94 int nwords; /* size of blocks in long words */ 95 int adprot; /* (d/f) amigados protection bits */ 96 uid_t uid; /* (d/f) uid of directory/file */ 97 gid_t gid; /* (d/f) gid of directory/file */ 98 int flags; /* misc flags */ 99 char *slinkto; /* name of file or dir */ 100 }; 101 #define VTOA(vp) ((struct anode *)(vp)->v_data) 102 #define ATOV(ap) ((ap)->vp) 103 #define ANODETABSZ(ap) (((ap)->nwords - 56) * sizeof(long)) 104 #define ANODETABENT(ap) ((ap)->nwords - 56) 105 #define ANODENDATBLKENT(ap) ((ap)->nwords - 56) 106 107 /* 108 * mount data 109 */ 110 #define ANODEHASHSZ (512) 111 112 struct adosfsmount { 113 LIST_HEAD(anodechain, anode) anodetab[ANODEHASHSZ]; 114 struct mount *mp; /* owner mount */ 115 u_int32_t dostype; /* type of volume */ 116 u_long rootb; /* root block number */ 117 u_long secsperblk; /* sectors per block */ 118 u_long bsize; /* size of blocks */ 119 u_long nwords; /* size of blocks in long words */ 120 u_long dbsize; /* data bytes per block */ 121 uid_t uid; /* uid of mounting user */ 122 gid_t gid; /* gid of mounting user */ 123 u_long mask; /* mode mask */ 124 struct vnode *devvp; /* blk device mounted on */ 125 struct vnode *rootvp; /* out root vnode */ 126 u_long *bitmap; /* allocation bitmap */ 127 u_long numblks; /* number of usable blocks */ 128 u_long freeblks; /* number of free blocks */ 129 }; 130 131 #define VFSTOADOSFS(mp) ((struct adosfsmount *)(mp)->mnt_data) 132 133 #define IS_FFS(amp) ((amp)->dostype & 1) 134 #define IS_INTER(amp) (((amp)->dostype & 7) > 1) 135 136 /* 137 * AmigaDOS block stuff. 138 */ 139 #define BBOFF (0) 140 141 #define BPT_SHORT ((u_int32_t)2) 142 #define BPT_DATA ((u_int32_t)8) 143 #define BPT_LIST ((u_int32_t)16) 144 145 #define BST_RDIR ((u_int32_t)1) 146 #define BST_UDIR ((u_int32_t)2) 147 #define BST_SLINK ((u_int32_t)3) 148 #define BST_LDIR ((u_int32_t)4) 149 #define BST_FILE ((u_int32_t)-3) 150 #define BST_LFILE ((u_int32_t)-4) 151 152 #define OFS_DATA_OFFSET (24) 153 154 extern struct pool adosfs_node_pool; 155 156 /* 157 * utility protos 158 */ 159 #if BYTE_ORDER != BIG_ENDIAN 160 u_int32_t adoswordn __P((struct buf *, int)); 161 #else 162 #define adoswordn(bp,wn) (*((u_int32_t *)(bp)->b_data + (wn))) 163 #endif 164 165 u_int32_t adoscksum __P((struct buf *, int)); 166 int adoscaseequ __P((const u_char *, const u_char *, int, int)); 167 int adoshash __P((const u_char *, int, int, int)); 168 int adunixprot __P((int)); 169 int adosfs_getblktype __P((struct adosfsmount *, struct buf *)); 170 171 struct vnode *adosfs_ahashget __P((struct mount *, ino_t)); 172 void adosfs_ainshash __P((struct adosfsmount *, struct anode *)); 173 void adosfs_aremhash __P((struct anode *)); 174 175 int adosfs_lookup __P((void *)); 176 177 extern int (**adosfs_vnodeop_p) __P((void *)); 178 179 #ifdef SYSCTL_SETUP_PROTO 180 SYSCTL_SETUP_PROTO(sysctl_vfs_adosfs_setup); 181 #endif /* SYSCTL_SETUP_PROTO */ 182 #endif /* _KERNEL */ 183
Indexes created Mon Sep 29 21:09:56 GMT 2025