bsd/miscfs/specfs/specdev.h

   1 /*
   2  * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * Copyright (c) 1995, 1998 Apple Computer, Inc. All Rights Reserved.
  27  * Copyright (c) 1990, 1993
  28  *      The Regents of the University of California.  All rights reserved.
  29  *
  30  * Redistribution and use in source and binary forms, with or without
  31  * modification, are permitted provided that the following conditions
  32  * are met:
  33  * 1. Redistributions of source code must retain the above copyright
  34  *    notice, this list of conditions and the following disclaimer.
  35  * 2. Redistributions in binary form must reproduce the above copyright
  36  *    notice, this list of conditions and the following disclaimer in the
  37  *    documentation and/or other materials provided with the distribution.
  38  * 3. All advertising materials mentioning features or use of this software
  39  *    must display the following acknowledgement:
  40  *      This product includes software developed by the University of
  41  *      California, Berkeley and its contributors.
  42  * 4. Neither the name of the University nor the names of its contributors
  43  *    may be used to endorse or promote products derived from this software
  44  *    without specific prior written permission.
  45  *
  46  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  47  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  48  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  49  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  50  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  51  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  52  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  53  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  54  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  55  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  56  * SUCH DAMAGE.
  57  *
  58  *      @(#)specdev.h   8.6 (Berkeley) 5/21/95
  59  */
  60
  61 #ifndef _MISCFS_SPECFS_SPECDEV_H_
  62 #define _MISCFS_SPECFS_SPECDEV_H_
  63
  64 #include  <sys/appleapiopts.h>
  65
  66 #ifdef __APPLE_API_PRIVATE
  67 #include <vfs/vfs_support.h>
  68
  69 /*
  70  * This structure defines the information maintained about
  71  * special devices. It is allocated in checkalias and freed
  72  * in vgone.
  73  */
  74 struct specinfo {
  75         struct  vnode **si_hashchain;
  76         struct  vnode *si_specnext;
  77         long    si_flags;
  78         dev_t   si_rdev;
  79         daddr_t si_size;                  /* device block size in bytes */
  80         u_int64_t       si_devsize;       /* actual device size in bytes */
  81 };
  82 /*
  83  * Exported shorthand
  84  */
  85 #define v_rdev v_specinfo->si_rdev
  86 #define v_hashchain v_specinfo->si_hashchain
  87 #define v_specnext v_specinfo->si_specnext
  88 #define v_specflags v_specinfo->si_flags
  89 #define v_specsize v_specinfo->si_size
  90 #define v_specdevsize v_specinfo->si_devsize
  91
  92 /*
  93  * Flags for specinfo
  94  */
  95 #define SI_MOUNTEDON    0x0001  /* block special device is mounted on */
  96
  97 /*
  98  * Special device management
  99  */
 100 #define SPECHSZ 64
 101 #if     ((SPECHSZ&(SPECHSZ-1)) == 0)
 102 #define SPECHASH(rdev)  (((rdev>>5)+(rdev))&(SPECHSZ-1))
 103 #else
 104 #define SPECHASH(rdev)  (((unsigned)((rdev>>5)+(rdev)))%SPECHSZ)
 105 #endif
 106
 107 extern struct vnode *speclisth[SPECHSZ];
 108
 109 /*
 110  * Prototypes for special file operations on vnodes.
 111  */
 112 extern  int (**spec_vnodeop_p)(void *);
 113 struct  nameidata;
 114 struct  componentname;
 115 struct  ucred;
 116 struct  flock;
 117 struct  buf;
 118 struct  uio;
 119
 120 int     spec_ebadf();
 121
 122 int     spec_lookup __P((struct vop_lookup_args *));
 123 #define spec_create ((int (*) __P((struct  vop_access_args *)))err_create)
 124 #define spec_mknod ((int (*) __P((struct  vop_access_args *)))err_mknod)
 125 int     spec_open __P((struct vop_open_args *));
 126 int     spec_close __P((struct vop_close_args *));
 127 #define spec_access ((int (*) __P((struct  vop_access_args *)))spec_ebadf)
 128 #define spec_getattr ((int (*) __P((struct  vop_getattr_args *)))spec_ebadf)
 129 #define spec_setattr ((int (*) __P((struct  vop_setattr_args *)))spec_ebadf)
 130 int     spec_read __P((struct vop_read_args *));
 131 int     spec_write __P((struct vop_write_args *));
 132 #define spec_lease_check ((int (*) __P((struct  vop_access_args *)))nop_lease)
 133 int     spec_ioctl __P((struct vop_ioctl_args *));
 134 int     spec_select __P((struct vop_select_args *));
 135 #define spec_revoke ((int (*) __P((struct  vop_access_args *)))nop_revoke)
 136 #define spec_mmap ((int (*) __P((struct  vop_access_args *)))err_mmap)
 137 int     spec_fsync __P((struct  vop_fsync_args *));
 138 #define spec_seek ((int (*) __P((struct  vop_access_args *)))err_seek)
 139 #define spec_remove ((int (*) __P((struct  vop_access_args *)))err_remove)
 140 #define spec_link ((int (*) __P((struct  vop_access_args *)))err_link)
 141 #define spec_rename ((int (*) __P((struct  vop_access_args *)))err_rename)
 142 #define spec_mkdir ((int (*) __P((struct  vop_access_args *)))err_mkdir)
 143 #define spec_rmdir ((int (*) __P((struct  vop_access_args *)))err_rmdir)
 144 #define spec_symlink ((int (*) __P((struct  vop_access_args *)))err_symlink)
 145 #define spec_readdir ((int (*) __P((struct  vop_access_args *)))err_readdir)
 146 #define spec_readlink ((int (*) __P((struct  vop_access_args *)))err_readlink)
 147 #define spec_abortop ((int (*) __P((struct  vop_access_args *)))err_abortop)
 148 #define spec_inactive ((int (*) __P((struct  vop_access_args *)))nop_inactive)
 149 #define spec_reclaim ((int (*) __P((struct  vop_access_args *)))nop_reclaim)
 150 #define spec_lock ((int (*) __P((struct  vop_access_args *)))nop_lock)
 151 #define spec_unlock ((int (*) __P((struct  vop_access_args *)))nop_unlock)
 152 int     spec_bmap __P((struct vop_bmap_args *));
 153 int     spec_strategy __P((struct vop_strategy_args *));
 154 int     spec_print __P((struct vop_print_args *));
 155 #define spec_islocked ((int (*) __P((struct  vop_access_args *)))nop_islocked)
 156 int     spec_pathconf __P((struct vop_pathconf_args *));
 157 #define spec_advlock ((int (*) __P((struct  vop_access_args *)))err_advlock)
 158 #define spec_blkatoff ((int (*) __P((struct  vop_access_args *)))err_blkatoff)
 159 #define spec_valloc ((int (*) __P((struct  vop_access_args *)))err_valloc)
 160 #define spec_vfree ((int (*) __P((struct  vop_access_args *)))err_vfree)
 161 #define spec_truncate ((int (*) __P((struct  vop_access_args *)))nop_truncate)
 162 #define spec_update ((int (*) __P((struct  vop_access_args *)))nop_update)
 163 #define spec_reallocblks \
 164         ((int (*) __P((struct  vop_reallocblks_args *)))err_reallocblks)
 165 #define spec_bwrite ((int (*) __P((struct  vop_bwrite_args *)))nop_bwrite)
 166 int     spec_devblocksize __P((struct vop_devblocksize_args *));
 167 int spec_blktooff __P((struct  vop_blktooff_args *));
 168 int spec_offtoblk __P((struct  vop_offtoblk_args *));
 169 int spec_cmap __P((struct  vop_cmap_args *));
 170
 171 #endif /* __APPLE_API_PRIVATE */
 172 #endif /* _MISCFS_SPECFS_SPECDEV_H_ */