ufsmount.h

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/*-
 * Copyright (c) 1982, 1986, 1989, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 4. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *      @(#)ufsmount.h  8.6 (Berkeley) 3/30/95
 * $FreeBSD: releng/11.1/sys/ufs/ufs/ufsmount.h 306553 2016-10-01 09:19:43Z kib $
 */
 
#ifndef _UFS_UFS_UFSMOUNT_H_
#define _UFS_UFS_UFSMOUNT_H_
 
/*
 * Arguments to mount UFS-based filesystems
 */
struct ufs_args {
        char    *fspec;                 /* block special device to mount */
        //struct        oexport_args export;    /* network export information */
};
 
#ifdef MALLOC_DECLARE
MALLOC_DECLARE(M_UFSMNT);
#endif
 
struct buf;
struct inode;
struct nameidata;
struct taskqueue;
struct timeval;
struct ucred;
struct uio;
struct vnode;
struct ufs_extattr_per_mount;
struct jblocks;
struct inodedep;
 
//TAILQ_HEAD(inodedeplst, inodedep);
//LIST_HEAD(bmsafemaphd, bmsafemap);
 
/* This structure describes the UFS specific mount structure data. */
struct ufsmount {
        struct  mount *um_mountp;               /* filesystem vfs structure */
        struct  cdev *um_dev;                   /* device mounted */
        struct  g_consumer *um_cp;
        struct  bufobj *um_bo;                  /* Buffer cache object */
        struct  vnode *um_devvp;                /* block device mounted vnode */
        u_long  um_fstype;                      /* type of filesystem */
        struct  fs *um_fs;                      /* pointer to superblock */
        //struct        ufs_extattr_per_mount um_extattr;       /* extended attrs */
        u_long  um_nindir;                      /* indirect ptrs per block */
        u_long  um_bptrtodb;                    /* indir ptr to disk block */
        u_long  um_seqinc;                      /* inc between seq blocks */
        //struct        mtx um_lock;                    /* Protects ufsmount & fs */
        pid_t   um_fsckpid;                     /* PID permitted fsck sysctls */
        struct  mount_softdeps *um_softdep;     /* softdep mgmt structure */
        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 */
        int64_t um_savedmaxfilesize;            /* XXX - limit maxfilesize */
        int     um_candelete;                   /* devvp supports TRIM */
        int     um_writesuspended;              /* suspension in progress */
        u_int   um_trim_inflight;
        struct taskqueue *um_trim_tq;
        int     (*um_balloc)(struct vnode *, off_t, int, struct ucred *,
                    int, struct buf **);
        int     (*um_blkatoff)(struct vnode *, off_t, char **, struct buf **);
        int     (*um_truncate)(struct vnode *, off_t, int, struct ucred *);
        int     (*um_update)(struct vnode *, int);
        int     (*um_valloc)(struct vnode *, int, struct ucred *,
                    struct vnode **);
        int     (*um_vfree)(struct vnode *, ino_t, int);
        void    (*um_ifree)(struct ufsmount *, struct inode *);
        int     (*um_rdonly)(struct inode *);
        void    (*um_snapgone)(struct inode *);
};
 
#define UFS_BALLOC(aa, bb, cc, dd, ee, ff) VFSTOUFS((aa)->v_mount)->um_balloc(aa, bb, cc, dd, ee, ff)
#define UFS_BLKATOFF(aa, bb, cc, dd) VFSTOUFS((aa)->v_mount)->um_blkatoff(aa, bb, cc, dd)
#define UFS_TRUNCATE(aa, bb, cc, dd) VFSTOUFS((aa)->v_mount)->um_truncate(aa, bb, cc, dd)
#define UFS_UPDATE(aa, bb) VFSTOUFS((aa)->v_mount)->um_update(aa, bb)
#define UFS_VALLOC(aa, bb, cc, dd) VFSTOUFS((aa)->v_mount)->um_valloc(aa, bb, cc, dd)
#define UFS_VFREE(aa, bb, cc) VFSTOUFS((aa)->v_mount)->um_vfree(aa, bb, cc)
#define UFS_IFREE(aa, bb) ((aa)->um_ifree(aa, bb))
#define UFS_RDONLY(aa) (ITOUMP(aa)->um_rdonly(aa))
#define UFS_SNAPGONE(aa) (ITOUMP(aa)->um_snapgone(aa))
 
#define UFS_LOCK(aa)    mtx_lock(&(aa)->um_lock)
#define UFS_UNLOCK(aa)  mtx_unlock(&(aa)->um_lock)
#define UFS_MTX(aa)     (&(aa)->um_lock)
 
/*
 * Filesystem types
 */
#define UFS1    1
#define UFS2    2
 
/*
 * Flags describing the state of quotas.
 */
#define QTF_OPENING     0x01                    /* Q_QUOTAON in progress */
#define QTF_CLOSING     0x02                    /* Q_QUOTAOFF in progress */
#define QTF_64BIT       0x04                    /* 64-bit quota file */
 
/* Convert mount ptr to ufsmount ptr. */
#define VFSTOUFS(mp)    ((struct ufsmount *)((mp)->mnt_data))
#define UFSTOVFS(ump)   (ump)->um_mountp
 
/*
 * Macros to access filesystem parameters in the ufsmount structure.
 * Used by ufs_bmap.
 */
#define MNINDIR(ump)                    ((ump)->um_nindir)
#define blkptrtodb(ump, b)              ((b) << (ump)->um_bptrtodb)
#define is_sequential(ump, a, b)        ((b) == (a) + ump->um_seqinc)
 
#endif