Bring in UDF support from FreeBSD, disabled for now.

1 files changed, 136 insertions, 0 deletions

diff --git a/sys/isofs/udf/udf.h b/sys/isofs/udf/udf.h
new file mode 100644
index 00000000000..b9aba264183
--- /dev/null
+++ b/sys/isofs/udf/udf.h
@@ -0,0 +1,136 @@
+/*	$OpenBSD: udf.h,v 1.1 2005/03/29 17:24:52 pedro 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 <pedro@openbsd.org> in February 2005.
+ */
+
+#define UDF_HASHTBLSIZE 100
+
+struct udf_node {
+	LIST_ENTRY(udf_node)	le;
+	struct vnode	*i_vnode;
+	struct vnode	*i_devvp;
+	struct udf_mnt	*udfmp;
+	struct lock	i_lock;
+	dev_t		i_dev;
+	ino_t		hash_id;
+	long		diroff;
+	struct file_entry *fentry;
+};
+
+struct udf_mnt {
+	int			im_flags;
+	struct mount		*im_mountp;
+	struct vnode		*im_devvp;
+	dev_t			im_dev;
+	int			bsize;
+	int			bshift;
+	int			bmask;
+	uint32_t		part_start;
+	uint32_t		part_len;
+	uint64_t		root_id;
+	struct vnode		*root_vp;
+	struct long_ad		root_icb;
+	LIST_HEAD(udf_hash_lh, udf_node)	*hashtbl;
+	u_long			hashsz;
+	struct mutex		hash_mtx;
+	int			p_sectors;
+	int			s_table_entries;
+	struct udf_sparing_table *s_table;
+};
+
+struct udf_dirstream {
+	struct udf_node	*node;
+	struct udf_mnt	*udfmp;
+	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 udf_mnt *)((mp)->mnt_data))
+#define	VTON(vp)	((struct udf_node *)((vp)->v_data))
+
+/*
+ * The block layer refers to things in terms of 512 byte blocks by default.
+ * btodb() is expensive, so speed things up.
+ * XXX Can the block layer be forced to use a different block size?
+ */
+#define	RDSECTOR(devvp, sector, size, bp) \
+	bread(devvp, sector << (udfmp->bshift - DEV_BSHIFT), size, NOCRED, bp)
+
+static __inline int
+udf_readlblks(struct udf_mnt *udfmp, int sector, int size, struct buf **bp)
+{
+	return (RDSECTOR(udfmp->im_devvp, sector,
+			 (size + udfmp->bmask) & ~udfmp->bmask, bp));
+}
+
+static __inline int
+udf_readalblks(struct udf_mnt *udfmp, int lsector, int size, struct buf **bp)
+{
+	daddr_t rablock, lblk;
+	int rasize;
+
+	lblk = (lsector + udfmp->part_start) << (udfmp->bshift - DEV_BSHIFT);
+	rablock = (lblk + 1) << udfmp->bshift;
+	rasize = size;
+
+	return (breadn(udfmp->im_devvp, lblk,
+		       (size + udfmp->bmask) & ~udfmp->bmask,
+		       &rablock, &rasize, 1,  NOCRED, 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).
+ * XXX If the fileno resolves to 0, we might be in big trouble.
+ * XXX Assumes the ICB is a long_ad.  This struct is compatible with short_ad,
+ *     but not ext_ad.
+ */
+static __inline ino_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 udf_mnt *, ino_t, int, struct vnode **);
+int udf_hashins(struct udf_node *);
+int udf_hashrem(struct udf_node *);
+int udf_checktag(struct desc_tag *, uint16_t);