sys/ufs/lfs/ulfsmount.h

   1 /*      $NetBSD: ulfsmount.h,v 1.13 2015/05/31 15:48:03 hannken Exp $   */
   2 /*  from NetBSD: ufsmount.h,v 1.39 2012/10/19 17:09:08 drochner Exp  */
   3
   4 /*
   5  * Copyright (c) 1982, 1986, 1989, 1993
   6  *      The Regents of the University of California.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the name of the University nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  *      @(#)ufsmount.h  8.6 (Berkeley) 3/30/95
  33  */
  34
  35 #ifndef _UFS_LFS_ULFSMOUNT_H_
  36 #define _UFS_LFS_ULFSMOUNT_H_
  37
  38 #include <sys/mount.h> /* struct export_args30 */
  39
  40 #ifdef _KERNEL
  41
  42 #if defined(_KERNEL_OPT)
  43 #include "opt_lfs.h"
  44 #endif
  45
  46 #include <sys/mutex.h>
  47
  48 #include <ufs/lfs/ulfs_extattr.h>
  49 #include <ufs/lfs/ulfs_quotacommon.h>
  50
  51 struct buf;
  52 struct inode;
  53 struct nameidata;
  54 struct timeval;
  55 struct uio;
  56 struct vnode;
  57
  58 /* This structure describes the ULFS specific mount structure data. */
  59 struct ulfsmount {
  60         /* Abstract vfs-level filesystem structure. */
  61         struct mount *um_mountp;
  62
  63         /* The block device we're mounted on. */
  64         dev_t um_dev;
  65         struct vnode *um_devvp;
  66
  67         /* type of fs; currently always ULFS1, theoretically also ULFS2 */
  68         u_long um_fstype;
  69
  70         /* pointer to the filesystem-specific filesystem structure */
  71         struct lfs *um_lfs;
  72
  73         /* Extended attribute information. */
  74         struct ulfs_extattr_per_mount um_extattr;
  75
  76         /* Cleaner lwp, set on first bmapv syscall. */
  77         struct lwp *um_cleaner_thread;
  78
  79         /* Hint from cleaner, only valid if curlwp == um_cleaner_thread. */
  80         BLOCK_INFO *um_cleaner_hint;
  81         /* Quota-related material. */
  82         struct vnode *um_quotas[ULFS_MAXQUOTAS]; /* quota files */
  83         kauth_cred_t um_cred[ULFS_MAXQUOTAS];   /* quota file access cred */
  84         union {
  85             struct um_q1 {
  86                 time_t  q1_btime[ULFS_MAXQUOTAS]; /* block quota time limit */
  87                 time_t  q1_itime[ULFS_MAXQUOTAS]; /* inode quota time limit */
  88                 char    q1_qflags[ULFS_MAXQUOTAS]; /* quota flags */
  89             } um_q1;
  90             struct um_q2 {
  91                 uint64_t q2_bsize;              /* block size of quota file */
  92                 uint64_t q2_bmask;              /* mask for above */
  93             } um_q2;
  94         } um_q;
  95 #define umq1_btime  um_q.um_q1.q1_btime
  96 #define umq1_itime  um_q.um_q1.q1_itime
  97 #define umq1_qflags um_q.um_q1.q1_qflags
  98 #define umq2_bsize  um_q.um_q2.q2_bsize
  99 #define umq2_bmask  um_q.um_q2.q2_bmask
 100 };
 101
 102 /* ULFS-specific flags for um_flags */
 103 #define ULFS_NEEDSWAP   0x01    /* filesystem metadata need byte-swapping */
 104 /*      unused          0x02       */
 105 #define ULFS_QUOTA      0x04    /* filesystem has QUOTA (v1) */
 106 #define ULFS_QUOTA2     0x08    /* filesystem has QUOTA2 */
 107
 108 /*
 109  * Filesystem types
 110  */
 111 #define ULFS1  1
 112 #define ULFS2  2
 113
 114
 115 /*
 116  * Flags describing the state of quotas.
 117  */
 118 #define QTF_OPENING     0x01                    /* Q_QUOTAON in progress */
 119 #define QTF_CLOSING     0x02                    /* Q_QUOTAOFF in progress */
 120
 121 /* Convert mount ptr to ulfsmount ptr. */
 122 #define VFSTOULFS(mp)   ((struct ulfsmount *)((mp)->mnt_data))
 123
 124 /*
 125  * Macros to access file system parameters (no longer) in the
 126  * ulfsmount structure.
 127  * Used by ulfs_bmap.
 128  */
 129 #define MNINDIR(lfs)                    ((lfs)->um_nindir)
 130 #define blkptrtodb(lfs, b)              ((b) << (lfs)->um_bptrtodb)
 131
 132 /*
 133  * Predicate for byte-swapping support.
 134  */
 135 #define FSFMT(vp)       (((vp)->v_mount->mnt_iflag & IMNT_DTYPE) == 0)
 136
 137 #endif /* _KERNEL */
 138
 139 #endif /* !_UFS_LFS_ULFSMOUNT_H_ */