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