usr/src/sys/ufs/ffs/ufsmount.h

/*
 * Copyright (c) 1982, 1986, 1989 Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 *
 *      @(#)ufsmount.h  7.13 (Berkeley) %G%
 */

struct buf;
struct inode;
struct nameidata;
struct timeval;
struct ucred;
struct uio;
struct vnode;

/* This structure describes the UFS specific mount structure data. */
struct ufsmount {
        struct  mount *um_mountp;               /* filesystem vfs structure */
        dev_t   um_dev;                         /* device mounted */
        struct  vnode *um_devvp;                /* block device mounted vnode */
        union {                                 /* pointer to superblock */
                struct  lfs *lfs;               /* LFS */
                struct  fs *fs;                 /* FFS */
        } ufsmount_u;
#define um_fs   ufsmount_u.fs
#define um_lfs  ufsmount_u.lfs
        struct  vnode *um_quotas[MAXQUOTAS];    /* pointer to quota files */
        struct  ucred *um_cred[MAXQUOTAS];      /* quota file access cred */
        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 */
        struct  netaddrhash um_defexported;     /* Default export */
        struct  netaddrhash *um_netaddr[NETHASHSZ+1]; /* Net addr hash lists */
};
/*
 * Flags describing the state of quotas.
 */
#define QTF_OPENING     0x01                    /* Q_QUOTAON in progress */
#define QTF_CLOSING     0x02                    /* Q_QUOTAOFF in progress */

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