1 /* $OpenBSD: udf.h,v 1.14 2011/07/04 04:30:41 tedu Exp $ */ 2 3 /* 4 * Copyright (c) 2001, 2002 Scott Long <scottl@freebsd.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD: src/sys/fs/udf/udf.h,v 1.9 2004/10/29 10:40:58 phk Exp $ 29 */ 30 31 /* 32 * Ported to OpenBSD by Pedro Martelletto in February 2005. 33 */ 34 35 #define UDF_HASHTBLSIZE 100 36 37 struct unode { 38 LIST_ENTRY(unode) u_le; 39 struct vnode *u_vnode; 40 struct vnode *u_devvp; 41 struct umount *u_ump; 42 struct lock u_lock; 43 dev_t u_dev; 44 ino_t u_ino; 45 union { 46 long u_diroff; 47 long u_vatlen; 48 } un_u; 49 struct extfile_entry *u_fentry; 50 }; 51 52 #define u_diroff un_u.u_diroff 53 #define u_vatlen un_u.u_vatlen 54 55 struct umount { 56 int um_flags; 57 struct mount *um_mountp; 58 struct vnode *um_devvp; 59 dev_t um_dev; 60 int um_bsize; 61 int um_bshift; 62 int um_bmask; 63 uint32_t um_start; 64 uint32_t um_realstart; 65 uint32_t um_len; 66 uint32_t um_reallen; 67 uint32_t um_meta_start; 68 uint32_t um_meta_len; 69 struct unode *um_vat; 70 struct long_ad um_root_icb; 71 LIST_HEAD(udf_hash_lh, unode) *um_hashtbl; 72 u_long um_hashsz; 73 struct mutex um_hashmtx; 74 int um_psecs; 75 int um_stbl_len; 76 struct udf_sparing_table *um_stbl; 77 }; 78 79 #define UDF_MNT_FIND_VAT 0x01 /* Indicates a VAT must be found */ 80 #define UDF_MNT_USES_VAT 0x02 /* Indicates a VAT must be used */ 81 #define UDF_MNT_USES_META 0x04 /* Indicates we are using a Metadata partition*/ 82 83 struct udf_dirstream { 84 struct unode *node; 85 struct umount *ump; 86 struct buf *bp; 87 uint8_t *data; 88 uint8_t *buf; 89 int fsize; 90 int off; 91 int this_off; 92 int offset; 93 int size; 94 int error; 95 int fid_fragment; 96 }; 97 98 #define VFSTOUDFFS(mp) ((struct umount *)((mp)->mnt_data)) 99 #define VTOU(vp) ((struct unode *)((vp)->v_data)) 100 101 /* 102 * The block layer refers to things in terms of 512 byte blocks by default. 103 * btodb() is expensive, so speed things up. 104 * Can the block layer be forced to use a different block size? 105 */ 106 #define RDSECTOR(devvp, sector, size, bp) \ 107 bread(devvp, sector << (ump->um_bshift - DEV_BSHIFT), size, bp) 108 109 static __inline int 110 udf_readlblks(struct umount *ump, int sector, int size, struct buf **bp) 111 { 112 return (RDSECTOR(ump->um_devvp, sector, 113 (size + ump->um_bmask) & ~ump->um_bmask, bp)); 114 } 115 116 /* 117 * Produce a suitable file number from an ICB. The passed in ICB is expected 118 * to be in little endian (meaning that it hasn't been swapped for big 119 * endian machines yet). 120 * If the fileno resolves to 0, we might be in big trouble. 121 * Assumes the ICB is a long_ad. This struct is compatible with short_ad, 122 * but not ext_ad. 123 */ 124 static __inline ino_t 125 udf_getid(struct long_ad *icb) 126 { 127 return (letoh32(icb->loc.lb_num)); 128 } 129 130 int udf_allocv(struct mount *, struct vnode **, struct proc *); 131 int udf_hashlookup(struct umount *, ino_t, int, struct vnode **); 132 int udf_hashins(struct unode *); 133 int udf_hashrem(struct unode *); 134 int udf_checktag(struct desc_tag *, uint16_t); 135 136 typedef uint16_t unicode_t; 137