1 /* $OpenBSD: udf.h,v 1.19 2013/09/17 04:31:56 mlarkin 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 typedef uint32_t udfino_t; 38 39 struct unode { 40 LIST_ENTRY(unode) u_le; 41 struct vnode *u_vnode; 42 struct vnode *u_devvp; 43 struct umount *u_ump; 44 struct lock u_lock; 45 dev_t u_dev; 46 udfino_t u_ino; 47 union { 48 long u_diroff; 49 long u_vatlen; 50 } un_u; 51 struct extfile_entry *u_fentry; 52 }; 53 54 #define u_diroff un_u.u_diroff 55 #define u_vatlen un_u.u_vatlen 56 57 struct umount { 58 int um_flags; 59 struct mount *um_mountp; 60 struct vnode *um_devvp; 61 dev_t um_dev; 62 int um_bsize; 63 int um_bshift; 64 int um_bmask; 65 uint32_t um_start; 66 uint32_t um_realstart; 67 uint32_t um_len; 68 uint32_t um_reallen; 69 uint32_t um_meta_start; 70 uint32_t um_meta_len; 71 struct unode *um_vat; 72 struct long_ad um_root_icb; 73 LIST_HEAD(udf_hash_lh, unode) *um_hashtbl; 74 u_long um_hashsz; 75 struct mutex um_hashmtx; 76 int um_psecs; 77 int um_stbl_len; 78 struct udf_sparing_table *um_stbl; 79 }; 80 81 #define UDF_MNT_FIND_VAT 0x01 /* Indicates a VAT must be found */ 82 #define UDF_MNT_USES_VAT 0x02 /* Indicates a VAT must be used */ 83 #define UDF_MNT_USES_META 0x04 /* Indicates we are using a Metadata partition*/ 84 85 #define VTOU(vp) ((struct unode *)((vp)->v_data)) 86 87 #ifdef _KERNEL 88 89 struct udf_dirstream { 90 struct unode *node; 91 struct umount *ump; 92 struct buf *bp; 93 uint8_t *data; 94 uint8_t *buf; 95 int fsize; 96 int off; 97 int this_off; 98 int offset; 99 int size; 100 int error; 101 int fid_fragment; 102 }; 103 104 #define VFSTOUDFFS(mp) ((struct umount *)((mp)->mnt_data)) 105 106 /* 107 * The block layer refers to things in terms of 512 byte blocks by default. 108 * btodb() is expensive, so speed things up. 109 * Can the block layer be forced to use a different block size? 110 */ 111 #define RDSECTOR(devvp, sector, size, bp) \ 112 bread(devvp, \ 113 ((daddr_t)(sector) << ump->um_bshift) / DEV_BSIZE, size, bp) 114 115 static __inline int 116 udf_readlblks(struct umount *ump, int sector, int size, struct buf **bp) 117 { 118 return (RDSECTOR(ump->um_devvp, sector, 119 (size + ump->um_bmask) & ~ump->um_bmask, bp)); 120 } 121 122 /* 123 * Produce a suitable file number from an ICB. The passed in ICB is expected 124 * to be in little endian (meaning that it hasn't been swapped for big 125 * endian machines yet). 126 * If the fileno resolves to 0, we might be in big trouble. 127 * Assumes the ICB is a long_ad. This struct is compatible with short_ad, 128 * but not ext_ad. 129 */ 130 static __inline udfino_t 131 udf_getid(struct long_ad *icb) 132 { 133 return (letoh32(icb->loc.lb_num)); 134 } 135 136 int udf_allocv(struct mount *, struct vnode **, struct proc *); 137 int udf_hashlookup(struct umount *, udfino_t, int, struct vnode **); 138 int udf_hashins(struct unode *); 139 int udf_hashrem(struct unode *); 140 int udf_checktag(struct desc_tag *, uint16_t); 141 142 typedef uint16_t unicode_t; 143 144 #endif /* _KERNEL */ 145 146