1 /* $NetBSD: ufsmount.h,v 1.8 2000/11/27 08:40:02 chs Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)ufsmount.h 8.6 (Berkeley) 3/30/95 36 */ 37 38 /* 39 * Arguments to mount UFS-based filesystems 40 */ 41 struct ufs_args { 42 char *fspec; /* block special device to mount */ 43 struct export_args export; /* network export information */ 44 }; 45 46 /* 47 * Arguments to mount MFS 48 */ 49 struct mfs_args { 50 char *fspec; /* name to export for statfs */ 51 struct export_args export; /* if exported MFSes are supported */ 52 caddr_t base; /* base of file system in memory */ 53 u_long size; /* size of file system */ 54 }; 55 56 #ifdef _KERNEL 57 struct buf; 58 struct inode; 59 struct nameidata; 60 struct timeval; 61 struct ucred; 62 struct uio; 63 struct vnode; 64 struct netexport; 65 66 /* This structure describes the UFS specific mount structure data. */ 67 struct ufsmount { 68 struct mount *um_mountp; /* filesystem vfs structure */ 69 dev_t um_dev; /* device mounted */ 70 struct vnode *um_devvp; /* block device mounted vnode */ 71 u_int32_t um_flags; /* UFS-specific flags - see below */ 72 union { /* pointer to superblock */ 73 struct fs *fs; /* FFS */ 74 struct lfs *lfs; /* LFS */ 75 struct m_ext2fs *e2fs; /* EXT2FS */ 76 } ufsmount_u; 77 #define um_fs ufsmount_u.fs 78 #define um_lfs ufsmount_u.lfs 79 #define um_e2fs ufsmount_u.e2fs 80 #define um_e2fsb ufsmount_u.e2fs->s_es 81 82 struct vnode *um_quotas[MAXQUOTAS]; /* pointer to quota files */ 83 struct ucred *um_cred[MAXQUOTAS]; /* quota file access cred */ 84 u_long um_nindir; /* indirect ptrs per block */ 85 u_long um_lognindir; /* log2 of um_nindir */ 86 u_long um_bptrtodb; /* indir ptr to disk block */ 87 u_long um_seqinc; /* inc between seq blocks */ 88 time_t um_btime[MAXQUOTAS]; /* block quota time limit */ 89 time_t um_itime[MAXQUOTAS]; /* inode quota time limit */ 90 char um_qflags[MAXQUOTAS]; /* quota specific flags */ 91 struct netexport um_export; /* export information */ 92 u_int64_t um_savedmaxfilesize; /* XXX - limit maxfilesize */ 93 }; 94 95 /* UFS-specific flags */ 96 #define UFS_NEEDSWAP 0x01 /* filesystem metadata need byte-swapping */ 97 98 /* 99 * Flags describing the state of quotas. 100 */ 101 #define QTF_OPENING 0x01 /* Q_QUOTAON in progress */ 102 #define QTF_CLOSING 0x02 /* Q_QUOTAOFF in progress */ 103 104 /* Convert mount ptr to ufsmount ptr. */ 105 #define VFSTOUFS(mp) ((struct ufsmount *)((mp)->mnt_data)) 106 107 /* 108 * Macros to access file system parameters in the ufsmount structure. 109 * Used by ufs_bmap. 110 */ 111 #define MNINDIR(ump) ((ump)->um_nindir) 112 #define blkptrtodb(ump, b) ((b) << (ump)->um_bptrtodb) 113 #define is_sequential(ump, a, b) ((b) == (a) + ump->um_seqinc) 114 #endif /* _KERNEL */ 115