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 * $FreeBSD$ 27 */ 28 29 #define UDF_HASHTBLSIZE 100 30 31 struct udf_node { 32 LIST_ENTRY(udf_node) le; 33 struct vnode *i_vnode; 34 struct vnode *i_devvp; 35 struct udf_mnt *udfmp; 36 dev_t i_dev; 37 ino_t hash_id; 38 long diroff; 39 struct file_entry *fentry; 40 }; 41 42 struct udf_mnt { 43 int im_flags; 44 struct mount *im_mountp; 45 dev_t im_dev; 46 struct vnode *im_devvp; 47 int bsize; 48 int bshift; 49 int bmask; 50 uint32_t part_start; 51 uint32_t part_len; 52 uint64_t root_id; 53 struct vnode *root_vp; 54 struct long_ad root_icb; 55 LIST_HEAD(udf_hash_lh, udf_node) *hashtbl; 56 u_long hashsz; 57 struct mtx hash_mtx; 58 int p_sectors; 59 int s_table_entries; 60 struct udf_sparing_table *s_table; 61 }; 62 63 struct udf_dirstream { 64 struct udf_node *node; 65 struct udf_mnt *udfmp; 66 struct buf *bp; 67 uint8_t *data; 68 uint8_t *buf; 69 int fsize; 70 int off; 71 int this_off; 72 int offset; 73 int size; 74 int error; 75 int fid_fragment; 76 }; 77 78 #define VFSTOUDFFS(mp) ((struct udf_mnt *)((mp)->mnt_data)) 79 #define VTON(vp) ((struct udf_node *)((vp)->v_data)) 80 81 /* 82 * The block layer refers to things in terms of 512 byte blocks by default. 83 * btodb() is expensive, so speed things up. 84 * XXX Can the block layer be forced to use a different block size? 85 */ 86 #define RDSECTOR(devvp, sector, size, bp) \ 87 bread(devvp, sector << (udfmp->bshift - DEV_BSHIFT), size, NOCRED, bp) 88 89 MALLOC_DECLARE(M_UDFFENTRY); 90 91 static __inline int 92 udf_readlblks(struct udf_mnt *udfmp, int sector, int size, struct buf **bp) 93 { 94 return (RDSECTOR(udfmp->im_devvp, sector, 95 (size + udfmp->bmask) & ~udfmp->bmask, bp)); 96 } 97 98 static __inline int 99 udf_readalblks(struct udf_mnt *udfmp, int lsector, int size, struct buf **bp) 100 { 101 daddr_t rablock, lblk; 102 int rasize; 103 104 lblk = (lsector + udfmp->part_start) << (udfmp->bshift - DEV_BSHIFT); 105 rablock = (lblk + 1) << udfmp->bshift; 106 rasize = size; 107 108 return (breadn(udfmp->im_devvp, lblk, 109 (size + udfmp->bmask) & ~udfmp->bmask, 110 &rablock, &rasize, 1, NOCRED, bp)); 111 } 112 113 /* 114 * Produce a suitable file number from an ICB. 115 * XXX If the fileno resolves to 0, we might be in big trouble. 116 * XXX Assumes the ICB is a long_ad. This struct is compatible with short_ad, 117 * but not ext_ad. 118 */ 119 static __inline ino_t 120 udf_getid(struct long_ad *icb) 121 { 122 return (icb->loc.lb_num); 123 } 124 125 int udf_allocv(struct mount *, struct vnode **, struct thread *); 126 int udf_hashlookup(struct udf_mnt *, ino_t, int, struct vnode **); 127 int udf_hashins(struct udf_node *); 128 int udf_hashrem(struct udf_node *); 129 int udf_checktag(struct desc_tag *, uint16_t); 130 int udf_vget(struct mount *, ino_t, int, struct vnode **); 131 132 extern uma_zone_t udf_zone_trans; 133 extern uma_zone_t udf_zone_node; 134 extern uma_zone_t udf_zone_ds; 135