1 /*- 2 * Copyright (c) 2001, 2002 Scott Long <scottl@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: src/sys/fs/udf/udf.h,v 1.6 2003/11/05 06:56:08 scottl Exp $ 27 * $DragonFly: src/sys/vfs/udf/udf.h,v 1.3 2006/09/10 01:26:41 dillon Exp $ 28 */ 29 30 #define UDF_HASHTBLSIZE 100 31 32 struct udf_node { 33 LIST_ENTRY(udf_node) le; 34 struct vnode *i_vnode; 35 struct vnode *i_devvp; 36 struct udf_mnt *udfmp; 37 cdev_t i_dev; 38 ino_t hash_id; 39 long diroff; 40 struct file_entry *fentry; 41 }; 42 43 struct udf_mnt { 44 int im_flags; 45 struct mount *im_mountp; 46 cdev_t im_dev; 47 struct vnode *im_devvp; 48 struct netexport im_export; 49 int bsize; 50 int bshift; 51 int bmask; 52 uint32_t part_start; 53 uint32_t part_len; 54 uint64_t root_id; 55 struct vnode *root_vp; 56 struct long_ad root_icb; 57 LIST_HEAD(udf_hash_lh, udf_node) *hashtbl; 58 u_long hashsz; 59 struct lwkt_token hash_token; 60 int p_sectors; 61 int s_table_entries; 62 struct udf_sparing_table *s_table; 63 }; 64 65 struct udf_dirstream { 66 struct udf_node *node; 67 struct udf_mnt *udfmp; 68 struct buf *bp; 69 uint8_t *data; 70 uint8_t *buf; 71 int fsize; 72 int off; 73 int this_off; 74 int offset; 75 int size; 76 int error; 77 int fid_fragment; 78 }; 79 80 #define VFSTOUDFFS(mp) ((struct udf_mnt *)((mp)->mnt_data)) 81 #define VTON(vp) ((struct udf_node *)((vp)->v_data)) 82 83 /* 84 * The block layer refers to things in terms of 512 byte blocks by default. 85 * btodb() is expensive, so speed things up. 86 * XXX Can the block layer be forced to use a different block size? 87 */ 88 #define RDSECTOR(devvp, sector, size, bp) \ 89 bread(devvp, (off_t)(sector) << udfmp->bshift, size, bp) 90 91 MALLOC_DECLARE(M_UDFFENTRY); 92 MALLOC_DECLARE(M_UDFNODE); 93 94 static __inline int 95 udf_readlblks(struct udf_mnt *udfmp, int sector, int size, struct buf **bp) 96 { 97 return (RDSECTOR(udfmp->im_devvp, sector, 98 (size + udfmp->bmask) & ~udfmp->bmask, bp)); 99 } 100 101 static __inline int 102 udf_readalblks(struct udf_mnt *udfmp, int lsector, int size, struct buf **bp) 103 { 104 off_t raoffset; 105 off_t loffset; 106 int rasize; 107 108 loffset = (off_t)(lsector + udfmp->part_start) << udfmp->bshift; 109 raoffset = loffset + (1 << udfmp->bshift); 110 rasize = size; 111 112 return (breadn(udfmp->im_devvp, loffset, 113 (size + udfmp->bmask) & ~udfmp->bmask, 114 &raoffset, &rasize, 1, bp)); 115 } 116 117 /* 118 * Produce a suitable file number from an ICB. 119 * XXX If the fileno resolves to 0, we might be in big trouble. 120 * XXX Assumes the ICB is a long_ad. This struct is compatible with short_ad, 121 * but not ext_ad. 122 */ 123 static __inline ino_t 124 udf_getid(struct long_ad *icb) 125 { 126 return (icb->loc.lb_num); 127 } 128 129 int udf_allocv(struct mount *, struct vnode **); 130 int udf_hashlookup(struct udf_mnt *, ino_t, struct vnode **); 131 int udf_hashins(struct udf_node *); 132 int udf_hashrem(struct udf_node *); 133 int udf_checktag(struct desc_tag *, uint16_t); 134 int udf_vget(struct mount *, struct vnode *, ino_t, struct vnode **); 135