4.3BSD-Reno/src/sys/ufs/ufsmount.h

/*
 * Copyright (c) 1982, 1986, 1989 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution is only permitted until one year after the first shipment
 * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
 * binary forms are permitted provided that: (1) source distributions retain
 * this entire copyright notice and comment, and (2) distributions including
 * binaries display the following acknowledgement:  This product includes
 * software developed by the University of California, Berkeley and its
 * contributors'' in the documentation or other materials provided with the
 * distribution and in all advertising materials mentioning features or use
 * of this software.  Neither the name of the University nor the names of
 * its contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 *	@(#)ufsmount.h	7.7 (Berkeley) 6/28/90
 */

/*
 * Mount structure.
 * One allocated on every mount.
 * Used to find the super block.
 */
struct	ufsmount {
	struct	mount *um_mountp;	/* vfs structure for this filesystem */
	dev_t	um_dev;			/* device mounted */
	struct	vnode *um_devvp;	/* vnode for block device mounted */
	struct	fs *um_fs;		/* pointer to superblock */
	struct	vnode *um_quotas[MAXQUOTAS]; /* pointer to quota files */
	struct	ucred *um_cred[MAXQUOTAS]; /* cred for access to quota file */
	time_t	um_btime[MAXQUOTAS];	/* block quota time limit */
	time_t	um_itime[MAXQUOTAS];	/* inode quota time limit */
	char	um_qflags[MAXQUOTAS];	/* quota specific flags, see below */
};
/*
 * Flags describing the state of quotas.
 */
#define	QTF_OPENING	0x01		/* Q_QUOTAON in progress */
#define	QTF_CLOSING	0x02		/* Q_QUOTAOFF in progress */

#ifdef KERNEL
/*
 * Convert mount ptr to ufsmount ptr.
 */
#define VFSTOUFS(mp)	((struct ufsmount *)((mp)->mnt_data))
#endif /* KERNEL */