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ulfsmount.h revision 1.7.2.3 
      1 /*	$NetBSD: ulfsmount.h,v 1.7.2.3 2014/08/20 00:04:45 tls 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 	/* Quota-related material. */
     77 	struct vnode *um_quotas[ULFS_MAXQUOTAS]; /* quota files */
     78 	kauth_cred_t um_cred[ULFS_MAXQUOTAS];	/* quota file access cred */
     79 	union {
     80 	    struct um_q1 {
     81 		time_t	q1_btime[ULFS_MAXQUOTAS]; /* block quota time limit */
     82 		time_t	q1_itime[ULFS_MAXQUOTAS]; /* inode quota time limit */
     83 		char	q1_qflags[ULFS_MAXQUOTAS]; /* quota flags */
     84 	    } um_q1;
     85 	    struct um_q2 {
     86 		uint64_t q2_bsize;		/* block size of quota file */
     87 		uint64_t q2_bmask;		/* mask for above */
     88 	    } um_q2;
     89 	} um_q;
     90 #define umq1_btime  um_q.um_q1.q1_btime
     91 #define umq1_itime  um_q.um_q1.q1_itime
     92 #define umq1_qflags um_q.um_q1.q1_qflags
     93 #define umq2_bsize  um_q.um_q2.q2_bsize
     94 #define umq2_bmask  um_q.um_q2.q2_bmask
     95 };
     96 
     97 /* ULFS-specific flags for um_flags */
     98 #define ULFS_NEEDSWAP	0x01	/* filesystem metadata need byte-swapping */
     99 /*	unused		0x02	   */
    100 #define ULFS_QUOTA	0x04	/* filesystem has QUOTA (v1) */
    101 #define ULFS_QUOTA2	0x08	/* filesystem has QUOTA2 */
    102 
    103 /*
    104  * Filesystem types
    105  */
    106 #define ULFS1  1
    107 #define ULFS2  2
    108 
    109 
    110 /*
    111  * Flags describing the state of quotas.
    112  */
    113 #define	QTF_OPENING	0x01			/* Q_QUOTAON in progress */
    114 #define	QTF_CLOSING	0x02			/* Q_QUOTAOFF in progress */
    115 
    116 /* Convert mount ptr to ulfsmount ptr. */
    117 #define VFSTOULFS(mp)	((struct ulfsmount *)((mp)->mnt_data))
    118 
    119 /*
    120  * Macros to access file system parameters (no longer) in the
    121  * ulfsmount structure.
    122  * Used by ulfs_bmap.
    123  */
    124 #define MNINDIR(lfs)			((lfs)->um_nindir)
    125 #define	blkptrtodb(lfs, b)		((b) << (lfs)->um_bptrtodb)
    126 
    127 /*
    128  * Predicate for byte-swapping support.
    129  */
    130 #define	FSFMT(vp)	(((vp)->v_mount->mnt_iflag & IMNT_DTYPE) == 0)
    131 
    132 #endif /* _KERNEL */
    133 
    134 #endif /* !_UFS_LFS_ULFSMOUNT_H_ */
    135