bsd/ufs/ufs/ufsmount.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 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  26 /*
  27  * Copyright (c) 1982, 1986, 1989, 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  *      @(#)ufsmount.h  8.6 (Berkeley) 3/30/95
  59  */
  60 #ifndef _UFS_UFSMOUNT_H_
  61 #define _UFS_UFSMOUNT_H_
  62
  63 #include <sys/appleapiopts.h>
  64
  65 #include <sys/quota.h>
  66
  67 #ifdef __APPLE_API_UNSTABLE
  68 /*
  69  * Arguments to mount UFS-based filesystems
  70  */
  71 struct ufs_args {
  72         char    *fspec;                 /* block special device to mount */
  73         struct  export_args export;     /* network export information */
  74 };
  75 #endif /* __APPLE_API_UNSTABLE */
  76
  77 #ifdef __APPLE_API_OBSOLETE
  78 #if MFS
  79 /*
  80  * Arguments to mount MFS
  81  */
  82 struct mfs_args {
  83         char    *fspec;                 /* name to export for statfs */
  84         struct  export_args export;     /* if exported MFSes are supported */
  85         caddr_t base;                   /* base of file system in memory */
  86         u_long  size;                   /* size of file system */
  87 };
  88 #endif /* MFS */
  89 #endif /* __APPLE_API_OBSOLETE */
  90
  91 #ifdef KERNEL
  92 #ifdef __APPLE_API_PRIVATE
  93 struct fs;
  94 struct mount;
  95 struct vnode;
  96 struct netexport;
  97
  98 /* This structure describes the UFS specific mount structure data. */
  99 struct ufsmount {
 100         struct  mount *um_mountp;               /* filesystem vfs structure */
 101         dev_t   um_dev;                         /* device mounted */
 102         struct  vnode *um_devvp;                /* block device mounted vnode */
 103
 104         union {                                 /* pointer to superblock */
 105                 struct  fs *fs;                 /* FFS */
 106         } ufsmount_u;
 107 #define um_fs   ufsmount_u.fs
 108
 109         struct  quotafile um_qfiles[MAXQUOTAS]; /* quota files */
 110         u_long  um_nindir;                      /* indirect ptrs per block */
 111         u_long  um_bptrtodb;                    /* indir ptr to disk block */
 112         u_long  um_seqinc;                      /* inc between seq blocks */
 113         struct  netexport um_export;            /* export information */
 114         int64_t um_savedmaxfilesize;            /* XXX - limit maxfilesize */
 115 };
 116
 117
 118 /* Convert mount ptr to ufsmount ptr. */
 119 #define VFSTOUFS(mp)    ((struct ufsmount *)((mp)->mnt_data))
 120
 121 /*
 122  * Macros to access file system parameters in the ufsmount structure.
 123  * Used by ufs_bmap.
 124  */
 125 #define MNINDIR(ump)                    ((ump)->um_nindir)
 126 #define blkptrtodb(ump, b)              ((b) << (ump)->um_bptrtodb)
 127 #define is_sequential(ump, a, b)        ((b) == (a) + ump->um_seqinc)
 128 #endif /* __APPLE_API_PRIVATE */
 129 #endif /* KERNEL */
 130
 131 #endif /* ! _UFS_UFSMOUNT_H_ */