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 struct cdev *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 struct g_consumer *im_cp; 46 struct bufobj *im_bo; 47 struct cdev *im_dev; 48 struct vnode *im_devvp; 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 mtx hash_mtx; 60 int p_sectors; 61 int s_table_entries; 62 struct udf_sparing_table *s_table; 63 void *im_d2l; /* disk->local iconv handle */ 64 #if 0 65 void *im_l2d; /* local->disk iconv handle */ 66 #endif 67 }; 68 69 struct udf_dirstream { 70 struct udf_node *node; 71 struct udf_mnt *udfmp; 72 struct buf *bp; 73 uint8_t *data; 74 uint8_t *buf; 75 int fsize; 76 int off; 77 int this_off; 78 int offset; 79 int size; 80 int error; 81 int fid_fragment; 82 }; 83 84 #define VFSTOUDFFS(mp) ((struct udf_mnt *)((mp)->mnt_data)) 85 #define VTON(vp) ((struct udf_node *)((vp)->v_data)) 86 87 /* 88 * The block layer refers to things in terms of 512 byte blocks by default. 89 * btodb() is expensive, so speed things up. 90 * XXX Can the block layer be forced to use a different block size? 91 */ 92 #define RDSECTOR(devvp, sector, size, bp) \ 93 bread(devvp, sector << (udfmp->bshift - DEV_BSHIFT), size, NOCRED, bp) 94 95 MALLOC_DECLARE(M_UDFFENTRY); 96 97 static __inline int 98 udf_readlblks(struct udf_mnt *udfmp, int sector, int size, struct buf **bp) 99 { 100 return (RDSECTOR(udfmp->im_devvp, sector, 101 (size + udfmp->bmask) & ~udfmp->bmask, bp)); 102 } 103 104 static __inline int 105 udf_readalblks(struct udf_mnt *udfmp, int lsector, int size, struct buf **bp) 106 { 107 daddr_t rablock, lblk; 108 int rasize; 109 110 lblk = (lsector + udfmp->part_start) << (udfmp->bshift - DEV_BSHIFT); 111 rablock = (lblk + 1) << udfmp->bshift; 112 rasize = size; 113 114 return (breadn(udfmp->im_devvp, lblk, 115 (size + udfmp->bmask) & ~udfmp->bmask, 116 &rablock, &rasize, 1, NOCRED, bp)); 117 } 118 119 /* 120 * Produce a suitable file number from an ICB. The passed in ICB is expected 121 * to be in little endian (meaning that it hasn't been swapped for big 122 * endian machines yet). 123 * XXX If the fileno resolves to 0, we might be in big trouble. 124 * XXX Assumes the ICB is a long_ad. This struct is compatible with short_ad, 125 * but not ext_ad. 126 */ 127 static __inline ino_t 128 udf_getid(struct long_ad *icb) 129 { 130 return (le32toh(icb->loc.lb_num)); 131 } 132 133 int udf_allocv(struct mount *, struct vnode **, struct thread *); 134 int udf_hashlookup(struct udf_mnt *, ino_t, int, struct vnode **); 135 int udf_hashins(struct udf_node *); 136 int udf_hashrem(struct udf_node *); 137 int udf_checktag(struct desc_tag *, uint16_t); 138 int udf_vget(struct mount *, ino_t, int, struct vnode **); 139 140 extern uma_zone_t udf_zone_trans; 141 extern uma_zone_t udf_zone_node; 142 extern uma_zone_t udf_zone_ds; 143