sys/fs/filecorefs/filecore_node.h

   1 /*      $NetBSD: filecore_node.h,v 1.4 2005/12/03 17:34:43 christos Exp $       */
   2
   3 /*-
   4  * Copyright (c) 1994 The Regents of the University of California.
   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  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  *      filecore_node.h         1.1     1998/6/26
  32  */
  33
  34 /*-
  35  * Copyright (c) 1998 Andrew McMurry
  36  *
  37  * Redistribution and use in source and binary forms, with or without
  38  * modification, are permitted provided that the following conditions
  39  * are met:
  40  * 1. Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
  42  * 2. Redistributions in binary form must reproduce the above copyright
  43  *    notice, this list of conditions and the following disclaimer in the
  44  *    documentation and/or other materials provided with the distribution.
  45  * 3. All advertising materials mentioning features or use of this software
  46  *    must display the following acknowledgement:
  47  *      This product includes software developed by the University of
  48  *      California, Berkeley and its contributors.
  49  * 4. Neither the name of the University nor the names of its contributors
  50  *    may be used to endorse or promote products derived from this software
  51  *    without specific prior written permission.
  52  *
  53  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  54  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  55  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  56  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  57  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  58  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  59  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  60  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  61  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  62  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  63  * SUCH DAMAGE.
  64  *
  65  *      filecore_node.h         1.1     1998/6/26
  66  */
  67
  68 #if !defined(_KERNEL)
  69 #error not supposed to be exposed to userland.
  70 #endif
  71
  72 #include <miscfs/genfs/genfs_node.h>
  73
  74 /*
  75  * In a future format, directories may be more than 2Gb in length,
  76  * however, in practice this seems unlikely. So, we define
  77  * the type doff_t as a long to keep down the cost of doing
  78  * lookup on a 32-bit machine. If you are porting to a 64-bit
  79  * architecture, you should make doff_t the same as off_t.
  80  */
  81 #define doff_t  long
  82
  83 struct filecore_node {
  84         struct  genfs_node i_gnode;
  85         LIST_ENTRY(filecore_node) i_hash;
  86         struct  vnode *i_vnode; /* vnode associated with this inode */
  87         struct  vnode *i_devvp; /* vnode for block I/O */
  88         u_long  i_flag;         /* see below */
  89         dev_t   i_dev;          /* device where inode resides */
  90         ino_t   i_number;       /* the identity of the inode */
  91         daddr_t i_block;        /* the disc address of the file */
  92         ino_t   i_parent;       /* the ino of the file's parent */
  93
  94         struct  filecore_mnt *i_mnt;    /* filesystem associated with this inode */
  95         struct  lockf *i_lockf; /* head of byte-level lock list */
  96         int     i_diroff;       /* offset in dir, where we found last entry */
  97
  98         struct  filecore_direntry i_dirent; /* directory entry */
  99 };
 100
 101 #define i_forw          i_chain[0]
 102 #define i_back          i_chain[1]
 103 #define i_size          i_dirent.len
 104
 105 /* flags */
 106 #define IN_ACCESS       0x0020          /* inode access time to be updated */
 107
 108 #define VTOI(vp) ((struct filecore_node *)(vp)->v_data)
 109 #define ITOV(ip) ((ip)->i_vnode)
 110
 111 #define filecore_staleinode(ip) ((ip)->i_dirent.name[0]==0)
 112
 113 /*
 114  * Prototypes for Filecore vnode operations
 115  */
 116 int     filecore_lookup(void *);
 117 #define filecore_open           genfs_nullop
 118 #define filecore_close          genfs_nullop
 119 int     filecore_access(void *);
 120 int     filecore_getattr(void *);
 121 int     filecore_read(void *);
 122 #define filecore_poll           genfs_poll
 123 #define filecore_mmap           genfs_mmap
 124 #define filecore_seek           genfs_seek
 125 int     filecore_readdir(void *);
 126 int     filecore_readlink(void *);
 127 #define filecore_abortop        genfs_abortop
 128 int     filecore_inactive(void *);
 129 int     filecore_reclaim(void *);
 130 int     filecore_link(void *);
 131 int     filecore_symlink(void *);
 132 int     filecore_bmap(void *);
 133 int     filecore_strategy(void *);
 134 int     filecore_print(void *);
 135 int     filecore_pathconf(void *);
 136 int     filecore_blkatoff(void *);
 137
 138 struct  vnode *filecore_ihashget(dev_t, ino_t);
 139 void    filecore_ihashins(struct filecore_node *);
 140 void    filecore_ihashrem(struct filecore_node *);
 141
 142 mode_t  filecore_mode(struct filecore_node *);
 143 struct timespec filecore_time(struct filecore_node *);
 144 ino_t   filecore_getparent(struct filecore_node *);
 145 int     filecore_fn2unix(char *, char *, u_int16_t *);
 146 int     filecore_fncmp(const char *, const char *, u_short);
 147 int     filecore_dbread(struct filecore_node *, struct buf **);