sys/fs/cd9660/cd9660_node.h

   1 /*      $NetBSD: cd9660_node.h,v 1.13 2007/12/08 14:41:11 ad Exp $      */
   2
   3 /*-
   4  * Copyright (c) 1994
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley
   8  * by Pace Willisson (pace@blitz.com).  The Rock Ridge Extension
   9  * Support code is derived from software contributed to Berkeley
  10  * by Atsushi Murai (amurai@spec.co.jp).
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions and the following disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  * 3. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  *
  36  *      @(#)cd9660_node.h       8.6 (Berkeley) 5/14/95
  37  */
  38
  39 #ifndef _ISOFS_CD9660_CD9660_NODE_H_
  40 #define _ISOFS_CD9660_CD9660_NODE_H_
  41
  42 #include <miscfs/genfs/genfs_node.h>
  43
  44 /*
  45  * Theoretically, directories can be more than 2Gb in length,
  46  * however, in practice this seems unlikely. So, we define
  47  * the type doff_t as a long to keep down the cost of doing
  48  * lookup on a 32-bit machine. If you are porting to a 64-bit
  49  * architecture, you should make doff_t the same as off_t.
  50  */
  51 #define doff_t  long
  52
  53 typedef struct  {
  54         struct timespec iso_atime;      /* time of last access */
  55         struct timespec iso_mtime;      /* time of last modification */
  56         struct timespec iso_ctime;      /* time file changed */
  57         u_short         iso_mode;       /* files access mode and type */
  58         uid_t           iso_uid;        /* owner user id */
  59         gid_t           iso_gid;        /* owner group id */
  60         short           iso_links;      /* links of file */
  61         dev_t           iso_rdev;       /* Major/Minor number for special */
  62 } ISO_RRIP_INODE;
  63
  64 struct iso_node {
  65         struct  genfs_node i_gnode;
  66         LIST_ENTRY(iso_node) i_hash;
  67         struct  vnode *i_vnode; /* vnode associated with this inode */
  68         struct  vnode *i_devvp; /* vnode for block I/O */
  69         u_long  i_flag;         /* see below */
  70         dev_t   i_dev;          /* device where inode resides */
  71         ino_t   i_number;       /* the identity of the inode */
  72                                 /* we use the actual starting block of the file */
  73         struct  iso_mnt *i_mnt; /* filesystem associated with this inode */
  74         struct  lockf *i_lockf; /* head of byte-level lock list */
  75         doff_t  i_endoff;       /* end of useful stuff in directory */
  76         doff_t  i_diroff;       /* offset in dir, where we found last entry */
  77         doff_t  i_offset;       /* offset of free space in directory */
  78         ino_t   i_ino;          /* inode number of found directory */
  79
  80         unsigned long iso_extent;       /* extent of file */
  81         unsigned long i_size;
  82         unsigned long iso_start;                /* actual start of data of file (may be different */
  83                                 /* from iso_extent, if file has extended attributes) */
  84         ISO_RRIP_INODE  inode;
  85 };
  86
  87 #define i_forw          i_chain[0]
  88 #define i_back          i_chain[1]
  89
  90 /* flags */
  91 #define IN_ACCESS       0x0020          /* inode access time to be updated */
  92
  93 #define VTOI(vp) ((struct iso_node *)(vp)->v_data)
  94 #define ITOV(ip) ((ip)->i_vnode)
  95
  96 #ifdef _KERNEL
  97 /*
  98  * Prototypes for ISOFS vnode operations
  99  */
 100 int     cd9660_lookup(void *);
 101 #define cd9660_open     genfs_nullop
 102 #define cd9660_close    genfs_nullop
 103 int     cd9660_access(void *);
 104 int     cd9660_getattr(void *);
 105 int     cd9660_read(void *);
 106 #define cd9660_ioctl    genfs_enoioctl
 107 #define cd9660_poll     genfs_poll
 108 #define cd9660_mmap     genfs_mmap
 109 #define cd9660_seek     genfs_seek
 110 int     cd9660_readdir(void *);
 111 int     cd9660_readlink(void *);
 112 #define cd9660_abortop  genfs_abortop
 113 int     cd9660_inactive(void *);
 114 int     cd9660_reclaim(void *);
 115 int     cd9660_link(void *);
 116 int     cd9660_symlink(void *);
 117 int     cd9660_bmap(void *);
 118 int     cd9660_lock(void *);
 119 int     cd9660_unlock(void *);
 120 int     cd9660_strategy(void *);
 121 int     cd9660_print(void *);
 122 int     cd9660_islocked(void *);
 123 int     cd9660_pathconf(void *);
 124 int     cd9660_setattr(void *);
 125
 126 int     cd9660_blkatoff(struct vnode *, off_t, char **, struct buf **);
 127 void    cd9660_defattr(struct iso_directory_record *,
 128                         struct iso_node *, struct buf *);
 129 void    cd9660_deftstamp(struct iso_directory_record *,
 130                         struct iso_node *, struct buf *);
 131 struct  vnode *cd9660_ihashget(dev_t, ino_t, int);
 132 void    cd9660_ihashins(struct iso_node *);
 133 void    cd9660_ihashrem(struct iso_node *);
 134 int     cd9660_tstamp_conv7(const u_char *, struct timespec *);
 135 int     cd9660_tstamp_conv17(const u_char *, struct timespec *);
 136 int     cd9660_vget_internal(struct mount *, ino_t, struct vnode **, int,
 137                               struct iso_directory_record *);
 138
 139 extern kmutex_t cd9660_hashlock;
 140
 141 #endif /* _KERNEL */
 142 #endif /* _ISOFS_CD9660_CD9660_NODE_H_ */