1 /* $OpenBSD: ufsmount.h,v 1.13 2016/02/27 18:50:38 natano Exp $ */ 2 /* $NetBSD: ufsmount.h,v 1.4 1994/12/21 20:00:23 mycroft 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 8.4 (Berkeley) 10/27/94 33 */ 34 35 struct buf; 36 struct inode; 37 struct nameidata; 38 struct timeval; 39 struct ucred; 40 struct uio; 41 struct vnode; 42 struct netexport; 43 44 /* This structure describes the UFS specific mount structure data. */ 45 struct ufsmount { 46 struct mount *um_mountp; /* filesystem vfs structure */ 47 dev_t um_dev; /* device mounted */ 48 struct vnode *um_devvp; /* block device mounted vnode */ 49 u_long um_fstype; /* type of file system */ 50 51 union { /* pointer to superblock */ 52 struct fs *fs; /* FFS */ 53 struct m_ext2fs *e2fs; /* EXT2FS */ 54 } ufsmount_u; 55 #define um_fs ufsmount_u.fs 56 #define um_e2fs ufsmount_u.e2fs 57 #define um_e2fsb ufsmount_u.e2fs->s_es 58 59 struct vnode *um_quotas[MAXQUOTAS]; /* pointer to quota files */ 60 struct ucred *um_cred[MAXQUOTAS]; /* quota file access cred */ 61 u_long um_nindir; /* indirect ptrs per block */ 62 u_long um_bptrtodb; /* indir ptr to disk block */ 63 u_long um_seqinc; /* inc between seq blocks */ 64 time_t um_btime[MAXQUOTAS]; /* block quota time limit */ 65 time_t um_itime[MAXQUOTAS]; /* inode quota time limit */ 66 char um_qflags[MAXQUOTAS]; /* quota specific flags */ 67 struct netexport um_export; /* export information */ 68 u_int64_t um_savedmaxfilesize; /* XXX - limit maxfilesize */ 69 u_int um_maxsymlinklen; /* max size of short symlink */ 70 }; 71 72 /* 73 * Filesystem types 74 */ 75 #define UM_UFS1 1 76 #define UM_UFS2 2 77 #define UM_EXT2FS 3 78 79 /* 80 * Flags describing the state of quotas. 81 */ 82 #define QTF_OPENING 0x01 /* Q_QUOTAON in progress */ 83 #define QTF_CLOSING 0x02 /* Q_QUOTAOFF in progress */ 84 85 /* Convert mount ptr to ufsmount ptr. */ 86 #define VFSTOUFS(mp) ((struct ufsmount *)((mp)->mnt_data)) 87 88 /* 89 * Macros to access file system parameters in the ufsmount structure. 90 * Used by ufs_bmap. 91 */ 92 #define MNINDIR(ump) ((ump)->um_nindir) 93 #define blkptrtodb(ump, b) ((b) << (ump)->um_bptrtodb) 94 #define is_sequential(ump, a, b) ((b) == (a) + ump->um_seqinc) 95