Annotation of sys/isofs/udf/udf.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: udf.h,v 1.11 2006/07/12 14:26:44 pedro Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 2001, 2002 Scott Long <scottl@freebsd.org>
! 5: * All rights reserved.
! 6: *
! 7: * Redistribution and use in source and binary forms, with or without
! 8: * modification, are permitted provided that the following conditions
! 9: * are met:
! 10: * 1. Redistributions of source code must retain the above copyright
! 11: * notice, this list of conditions and the following disclaimer.
! 12: * 2. Redistributions in binary form must reproduce the above copyright
! 13: * notice, this list of conditions and the following disclaimer in the
! 14: * documentation and/or other materials provided with the distribution.
! 15: *
! 16: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
! 17: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 18: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 19: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
! 20: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 21: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 22: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 23: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 24: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 25: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 26: * SUCH DAMAGE.
! 27: *
! 28: * $FreeBSD: src/sys/fs/udf/udf.h,v 1.9 2004/10/29 10:40:58 phk Exp $
! 29: */
! 30:
! 31: /*
! 32: * Ported to OpenBSD by Pedro Martelletto <pedro@openbsd.org> in February 2005.
! 33: */
! 34:
! 35: #define UDF_HASHTBLSIZE 100
! 36:
! 37: struct unode {
! 38: LIST_ENTRY(unode) u_le;
! 39: struct vnode *u_vnode;
! 40: struct vnode *u_devvp;
! 41: struct umount *u_ump;
! 42: struct lock u_lock;
! 43: dev_t u_dev;
! 44: ino_t u_ino;
! 45: union {
! 46: long u_diroff;
! 47: long u_vatlen;
! 48: } un_u;
! 49: struct file_entry *u_fentry;
! 50: };
! 51:
! 52: #define u_diroff un_u.u_diroff
! 53: #define u_vatlen un_u.u_vatlen
! 54:
! 55: struct umount {
! 56: int um_flags;
! 57: struct mount *um_mountp;
! 58: struct vnode *um_devvp;
! 59: dev_t um_dev;
! 60: int um_bsize;
! 61: int um_bshift;
! 62: int um_bmask;
! 63: uint32_t um_start;
! 64: uint32_t um_len;
! 65: struct unode *um_vat;
! 66: struct long_ad um_root_icb;
! 67: LIST_HEAD(udf_hash_lh, unode) *um_hashtbl;
! 68: u_long um_hashsz;
! 69: struct mutex um_hashmtx;
! 70: int um_psecs;
! 71: int um_stbl_len;
! 72: struct udf_sparing_table *um_stbl;
! 73: };
! 74:
! 75: #define UDF_MNT_FIND_VAT 0x01 /* Indicates a VAT must be found */
! 76: #define UDF_MNT_USES_VAT 0x02 /* Indicates a VAT must be used */
! 77:
! 78: struct udf_dirstream {
! 79: struct unode *node;
! 80: struct umount *ump;
! 81: struct buf *bp;
! 82: uint8_t *data;
! 83: uint8_t *buf;
! 84: int fsize;
! 85: int off;
! 86: int this_off;
! 87: int offset;
! 88: int size;
! 89: int error;
! 90: int fid_fragment;
! 91: };
! 92:
! 93: #define VFSTOUDFFS(mp) ((struct umount *)((mp)->mnt_data))
! 94: #define VTOU(vp) ((struct unode *)((vp)->v_data))
! 95:
! 96: /*
! 97: * The block layer refers to things in terms of 512 byte blocks by default.
! 98: * btodb() is expensive, so speed things up.
! 99: * Can the block layer be forced to use a different block size?
! 100: */
! 101: #define RDSECTOR(devvp, sector, size, bp) \
! 102: bread(devvp, sector << (ump->um_bshift - DEV_BSHIFT), size, NOCRED, bp)
! 103:
! 104: static __inline int
! 105: udf_readlblks(struct umount *ump, int sector, int size, struct buf **bp)
! 106: {
! 107: return (RDSECTOR(ump->um_devvp, sector,
! 108: (size + ump->um_bmask) & ~ump->um_bmask, bp));
! 109: }
! 110:
! 111: /*
! 112: * Produce a suitable file number from an ICB. The passed in ICB is expected
! 113: * to be in little endian (meaning that it hasn't been swapped for big
! 114: * endian machines yet).
! 115: * If the fileno resolves to 0, we might be in big trouble.
! 116: * 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 (letoh32(icb->loc.lb_num));
! 123: }
! 124:
! 125: int udf_allocv(struct mount *, struct vnode **, struct proc *);
! 126: int udf_hashlookup(struct umount *, ino_t, int, struct vnode **);
! 127: int udf_hashins(struct unode *);
! 128: int udf_hashrem(struct unode *);
! 129: int udf_checktag(struct desc_tag *, uint16_t);
! 130:
! 131: typedef uint16_t unicode_t;
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