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/* $OpenBSD: udf.h,v 1.18 2013/08/16 14:27:28 mlarkin Exp $ */
/*
* Copyright (c) 2001, 2002 Scott Long <scottl@freebsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD: src/sys/fs/udf/udf.h,v 1.9 2004/10/29 10:40:58 phk Exp $
*/
/*
* Ported to OpenBSD by Pedro Martelletto in February 2005.
*/
#define UDF_HASHTBLSIZE 100
typedef uint32_t udfino_t;
struct unode {
LIST_ENTRY(unode) u_le;
struct vnode *u_vnode;
struct vnode *u_devvp;
struct umount *u_ump;
struct lock u_lock;
dev_t u_dev;
udfino_t u_ino;
union {
long u_diroff;
long u_vatlen;
} un_u;
struct extfile_entry *u_fentry;
};
#define u_diroff un_u.u_diroff
#define u_vatlen un_u.u_vatlen
struct umount {
int um_flags;
struct mount *um_mountp;
struct vnode *um_devvp;
dev_t um_dev;
int um_bsize;
int um_bshift;
int um_bmask;
uint32_t um_start;
uint32_t um_realstart;
uint32_t um_len;
uint32_t um_reallen;
uint32_t um_meta_start;
uint32_t um_meta_len;
struct unode *um_vat;
struct long_ad um_root_icb;
LIST_HEAD(udf_hash_lh, unode) *um_hashtbl;
u_long um_hashsz;
struct mutex um_hashmtx;
int um_psecs;
int um_stbl_len;
struct udf_sparing_table *um_stbl;
};
#define UDF_MNT_FIND_VAT 0x01 /* Indicates a VAT must be found */
#define UDF_MNT_USES_VAT 0x02 /* Indicates a VAT must be used */
#define UDF_MNT_USES_META 0x04 /* Indicates we are using a Metadata partition*/
#define VTOU(vp) ((struct unode *)((vp)->v_data))
#ifdef _KERNEL
struct udf_dirstream {
struct unode *node;
struct umount *ump;
struct buf *bp;
uint8_t *data;
uint8_t *buf;
int fsize;
int off;
int this_off;
int offset;
int size;
int error;
int fid_fragment;
};
#define VFSTOUDFFS(mp) ((struct umount *)((mp)->mnt_data))
/*
* The block layer refers to things in terms of 512 byte blocks by default.
* btodb() is expensive, so speed things up.
* Can the block layer be forced to use a different block size?
*/
#define RDSECTOR(devvp, sector, size, bp) \
bread(devvp, \
((daddr_t)(sector) << ump->um_bshift) / DEV_BSIZE, size, bp)
static __inline int
udf_readlblks(struct umount *ump, int sector, int size, struct buf **bp)
{
return (RDSECTOR(ump->um_devvp, sector,
(size + ump->um_bmask) & ~ump->um_bmask, bp));
}
/*
* Produce a suitable file number from an ICB. The passed in ICB is expected
* to be in little endian (meaning that it hasn't been swapped for big
* endian machines yet).
* If the fileno resolves to 0, we might be in big trouble.
* Assumes the ICB is a long_ad. This struct is compatible with short_ad,
* but not ext_ad.
*/
static __inline udfino_t
udf_getid(struct long_ad *icb)
{
return (letoh32(icb->loc.lb_num));
}
int udf_allocv(struct mount *, struct vnode **, struct proc *);
int udf_hashlookup(struct umount *, udfino_t, int, struct vnode **);
int udf_hashins(struct unode *);
int udf_hashrem(struct unode *);
int udf_checktag(struct desc_tag *, uint16_t);
typedef uint16_t unicode_t;
#endif /* _KERNEL */
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