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 struct vnode *i_vnode; 33 struct udf_mnt *udfmp; 34 ino_t hash_id; 35 long diroff; 36 struct file_entry *fentry; 37 }; 38 39 struct udf_mnt { 40 int im_flags; 41 struct mount *im_mountp; 42 struct g_consumer *im_cp; 43 struct bufobj *im_bo; 44 struct cdev *im_dev; 45 struct vnode *im_devvp; 46 int bsize; 47 int bshift; 48 int bmask; 49 uint32_t part_start; 50 uint32_t part_len; 51 uint64_t root_id; 52 struct long_ad root_icb; 53 int p_sectors; 54 int s_table_entries; 55 struct udf_sparing_table *s_table; 56 void *im_d2l; /* disk->local iconv handle */ 57 #if 0 58 void *im_l2d; /* local->disk iconv handle */ 59 #endif 60 }; 61 62 struct udf_dirstream { 63 struct udf_node *node; 64 struct udf_mnt *udfmp; 65 struct buf *bp; 66 uint8_t *data; 67 uint8_t *buf; 68 int fsize; 69 int off; 70 int this_off; 71 int offset; 72 int size; 73 int error; 74 int fid_fragment; 75 }; 76 77 #define VFSTOUDFFS(mp) ((struct udf_mnt *)((mp)->mnt_data)) 78 #define VTON(vp) ((struct udf_node *)((vp)->v_data)) 79 80 /* 81 * The block layer refers to things in terms of 512 byte blocks by default. 82 * btodb() is expensive, so speed things up. 83 * XXX Can the block layer be forced to use a different block size? 84 */ 85 #define RDSECTOR(devvp, sector, size, bp) \ 86 bread(devvp, sector << (udfmp->bshift - DEV_BSHIFT), size, NOCRED, bp) 87 88 MALLOC_DECLARE(M_UDFFENTRY); 89 90 static __inline int 91 udf_readlblks(struct udf_mnt *udfmp, int sector, int size, struct buf **bp) 92 { 93 return (RDSECTOR(udfmp->im_devvp, sector, 94 (size + udfmp->bmask) & ~udfmp->bmask, bp)); 95 } 96 97 static __inline int 98 udf_readalblks(struct udf_mnt *udfmp, int lsector, int size, struct buf **bp) 99 { 100 daddr_t rablock, lblk; 101 int rasize; 102 103 lblk = (lsector + udfmp->part_start) << (udfmp->bshift - DEV_BSHIFT); 104 rablock = (lblk + 1) << udfmp->bshift; 105 rasize = size; 106 107 return (breadn(udfmp->im_devvp, lblk, 108 (size + udfmp->bmask) & ~udfmp->bmask, 109 &rablock, &rasize, 1, NOCRED, bp)); 110 } 111 112 /* 113 * Produce a suitable file number from an ICB. The passed in ICB is expected 114 * to be in little endian (meaning that it hasn't been swapped for big 115 * endian machines yet). 116 * XXX If the fileno resolves to 0, we might be in big trouble. 117 * XXX Assumes the ICB is a long_ad. This struct is compatible with short_ad, 118 * but not ext_ad. 119 */ 120 static __inline ino_t 121 udf_getid(struct long_ad *icb) 122 { 123 return (le32toh(icb->loc.lb_num)); 124 } 125 126 int udf_allocv(struct mount *, struct vnode **, struct thread *); 127 int udf_checktag(struct desc_tag *, uint16_t); 128 int udf_vget(struct mount *, ino_t, int, struct vnode **); 129 130 extern uma_zone_t udf_zone_trans; 131 extern uma_zone_t udf_zone_node; 132 extern uma_zone_t udf_zone_ds; 133