sys/vfs/ufs/ufsmount.h

   1 /*-
   2  * Copyright (c) 1982, 1986, 1989, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  *      @(#)ufsmount.h  8.6 (Berkeley) 3/30/95
  30  * $FreeBSD: src/sys/ufs/ufs/ufsmount.h,v 1.17 1999/12/29 04:55:06 peter Exp $
  31  */
  32
  33 #ifndef _VFS_UFS_UFSMOUNT_H_
  34 #define _VFS_UFS_UFSMOUNT_H_
  35
  36 /*
  37  * Arguments to mount UFS-based filesystems
  38  */
  39 struct ufs_args {
  40         char    *fspec;                 /* block special device to mount */
  41         struct  export_args export;     /* network export information */
  42 };
  43
  44 /*
  45  * Arguments to mount MFS
  46  */
  47 struct mfs_args {
  48         char    *fspec;                 /* name to export for statfs */
  49         struct  export_args export;     /* if exported MFSes are supported */
  50         caddr_t base;                   /* base of filesystem in memory */
  51         u_long  size;                   /* size of filesystem */
  52 };
  53
  54 #ifdef _KERNEL
  55
  56 #ifdef MALLOC_DECLARE
  57 MALLOC_DECLARE(M_UFSMNT);
  58 #endif
  59
  60 struct buf;
  61 struct inode;
  62 struct timeval;
  63 struct ucred;
  64 struct uio;
  65 struct vnode;
  66 struct netexport;
  67
  68 /* This structure describes the UFS specific mount structure data. */
  69 struct ufsmount {
  70         struct  mount *um_mountp;               /* filesystem vfs structure */
  71         cdev_t  um_dev;                         /* device mounted */
  72         struct  vnode *um_devvp;                /* block device mounted vnode */
  73
  74         struct  fs *um_fs;                      /* FFS */
  75         struct  vnode *um_quotas[MAXQUOTAS];    /* pointer to quota files */
  76         struct  ucred *um_cred[MAXQUOTAS];      /* quota file access cred */
  77         u_long  um_nindir;                      /* indirect ptrs per block */
  78         u_long  um_bptrtodb;                    /* indir ptr to disk block */
  79         u_long  um_seqinc;                      /* inc between seq blocks */
  80         ufs_time_t um_btime[MAXQUOTAS];         /* block quota time limit */
  81         ufs_time_t um_itime[MAXQUOTAS];         /* inode quota time limit */
  82         char    um_qflags[MAXQUOTAS];           /* quota specific flags */
  83         struct  netexport um_export;            /* export information */
  84         int64_t um_savedmaxfilesize;            /* XXX - limit maxfilesize */
  85         struct malloc_type *um_malloctype;      /* The inodes malloctype */
  86         int     um_i_effnlink_valid;            /* i_effnlink valid? */
  87         struct inode **um_ihashtbl;             /* inum to inode map */
  88         u_long  um_ihash;                       /* size of hash table - 1 */
  89 };
  90
  91 /*
  92  * Flags describing the state of quotas.
  93  */
  94 #define QTF_OPENING     0x01                    /* Q_QUOTAON in progress */
  95 #define QTF_CLOSING     0x02                    /* Q_QUOTAOFF in progress */
  96
  97 /* Convert mount ptr to ufsmount ptr. */
  98 #define VFSTOUFS(mp)    ((struct ufsmount *)((mp)->mnt_data))
  99
 100 /*
 101  * Macros to access filesystem parameters in the ufsmount structure.
 102  * Used by ufs_bmap.
 103  */
 104 #define MNINDIR(ump)                    ((ump)->um_nindir)
 105 #define blkptrtodb(ump, b)              ((b) << (ump)->um_bptrtodb)
 106 #define is_sequential(ump, a, b)        ((b) == (a) + ump->um_seqinc)
 107 #endif /* _KERNEL */
 108
 109 #endif /* !_VFS_UFS_UFSMOUNT_H_ */