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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;