143 lines
4.2 KiB
C
143 lines
4.2 KiB
C
/*-
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* Copyright (c) 2001, 2002 Scott Long <scottl@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#define UDF_HASHTBLSIZE 100
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struct udf_node {
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LIST_ENTRY(udf_node) le;
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struct vnode *i_vnode;
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struct vnode *i_devvp;
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struct udf_mnt *udfmp;
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struct cdev *i_dev;
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ino_t hash_id;
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long diroff;
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struct file_entry *fentry;
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};
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struct udf_mnt {
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int im_flags;
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struct mount *im_mountp;
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struct g_consumer *im_cp;
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struct bufobj *im_bo;
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struct cdev *im_dev;
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struct vnode *im_devvp;
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int bsize;
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int bshift;
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int bmask;
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uint32_t part_start;
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uint32_t part_len;
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uint64_t root_id;
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struct vnode *root_vp;
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struct long_ad root_icb;
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LIST_HEAD(udf_hash_lh, udf_node) *hashtbl;
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u_long hashsz;
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struct mtx hash_mtx;
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int p_sectors;
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int s_table_entries;
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struct udf_sparing_table *s_table;
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void *im_d2l; /* disk->local iconv handle */
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#if 0
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void *im_l2d; /* local->disk iconv handle */
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#endif
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};
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struct udf_dirstream {
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struct udf_node *node;
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struct udf_mnt *udfmp;
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struct buf *bp;
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uint8_t *data;
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uint8_t *buf;
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int fsize;
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int off;
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int this_off;
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int offset;
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int size;
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int error;
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int fid_fragment;
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};
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#define VFSTOUDFFS(mp) ((struct udf_mnt *)((mp)->mnt_data))
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#define VTON(vp) ((struct udf_node *)((vp)->v_data))
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/*
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* The block layer refers to things in terms of 512 byte blocks by default.
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* btodb() is expensive, so speed things up.
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* XXX Can the block layer be forced to use a different block size?
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*/
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#define RDSECTOR(devvp, sector, size, bp) \
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bread(devvp, sector << (udfmp->bshift - DEV_BSHIFT), size, NOCRED, bp)
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MALLOC_DECLARE(M_UDFFENTRY);
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static __inline int
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udf_readlblks(struct udf_mnt *udfmp, int sector, int size, struct buf **bp)
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{
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return (RDSECTOR(udfmp->im_devvp, sector,
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(size + udfmp->bmask) & ~udfmp->bmask, bp));
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}
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static __inline int
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udf_readalblks(struct udf_mnt *udfmp, int lsector, int size, struct buf **bp)
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{
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daddr_t rablock, lblk;
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int rasize;
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lblk = (lsector + udfmp->part_start) << (udfmp->bshift - DEV_BSHIFT);
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rablock = (lblk + 1) << udfmp->bshift;
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rasize = size;
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return (breadn(udfmp->im_devvp, lblk,
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(size + udfmp->bmask) & ~udfmp->bmask,
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&rablock, &rasize, 1, NOCRED, bp));
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}
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/*
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* Produce a suitable file number from an ICB. The passed in ICB is expected
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* to be in little endian (meaning that it hasn't been swapped for big
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* endian machines yet).
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* XXX If the fileno resolves to 0, we might be in big trouble.
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* XXX Assumes the ICB is a long_ad. This struct is compatible with short_ad,
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* but not ext_ad.
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*/
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static __inline ino_t
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udf_getid(struct long_ad *icb)
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{
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return (le32toh(icb->loc.lb_num));
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}
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int udf_allocv(struct mount *, struct vnode **, struct thread *);
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int udf_hashlookup(struct udf_mnt *, ino_t, int, struct vnode **);
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int udf_hashins(struct udf_node *);
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int udf_hashrem(struct udf_node *);
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int udf_checktag(struct desc_tag *, uint16_t);
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int udf_vget(struct mount *, ino_t, int, struct vnode **);
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extern uma_zone_t udf_zone_trans;
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extern uma_zone_t udf_zone_node;
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extern uma_zone_t udf_zone_ds;
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