Current File : //usr/lib/include/ufs/ufs/ufsmount.h
/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* 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.
* 3. 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
* $FreeBSD$
*/
#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 _KERNEL
#include <sys/_task.h>
#ifdef MALLOC_DECLARE
MALLOC_DECLARE(M_UFSMNT);
MALLOC_DECLARE(M_TRIM);
#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);
LIST_HEAD(trimlist_hashhead, ffs_blkfree_trim_params);
struct fsfail_task {
struct task task;
fsid_t fsid;
};
/*
* This structure describes the UFS specific mount structure data.
* The function operators are used to support different versions of
* UFS (UFS1, UFS2, etc).
*
* Lock reference:
* c - set at allocation then constant until freed
* i - ufsmount interlock (UFS_LOCK / UFS_UNLOCK)
* q - associated quota file is locked
* r - ref to parent mount structure is held (vfs_busy / vfs_unbusy)
* u - managed by user process fsck_ufs
*/
struct ufsmount {
struct mount *um_mountp; /* (r) filesystem vfs struct */
struct cdev *um_dev; /* (r) device mounted */
struct g_consumer *um_cp; /* (r) GEOM access point */
struct bufobj *um_bo; /* (r) Buffer cache object */
struct vnode *um_odevvp; /* (r) devfs dev vnode */
struct vnode *um_devvp; /* (r) mntfs private vnode */
u_long um_fstype; /* (c) type of filesystem */
struct fs *um_fs; /* (r) pointer to superblock */
struct ufs_extattr_per_mount um_extattr; /* (c) extended attrs */
u_long um_nindir; /* (c) indirect ptrs per blk */
u_long um_bptrtodb; /* (c) indir disk block ptr */
u_long um_seqinc; /* (c) inc between seq blocks */
struct mtx um_lock; /* (c) Protects ufsmount & fs */
pid_t um_fsckpid; /* (u) PID can do fsck sysctl */
struct mount_softdeps *um_softdep; /* (c) softdep mgmt structure */
struct vnode *um_quotas[MAXQUOTAS]; /* (q) pointer to quota files */
struct ucred *um_cred[MAXQUOTAS]; /* (q) quota file access cred */
time_t um_btime[MAXQUOTAS]; /* (q) block quota time limit */
time_t um_itime[MAXQUOTAS]; /* (q) inode quota time limit */
char um_qflags[MAXQUOTAS]; /* (i) quota specific flags */
int64_t um_savedmaxfilesize; /* (c) track maxfilesize */
u_int um_flags; /* (i) filesystem flags */
struct timeval um_last_fullmsg; /* (i) last full msg time */
int um_secs_fullmsg; /* (i) seconds since full msg */
struct timeval um_last_integritymsg; /* (i) last integrity msg */
int um_secs_integritymsg; /* (i) secs since integ msg */
u_int um_trim_inflight; /* (i) outstanding trim count */
u_int um_trim_inflight_blks; /* (i) outstanding trim blks */
u_long um_trim_total; /* (i) total trim count */
u_long um_trim_total_blks; /* (i) total trim block count */
struct taskqueue *um_trim_tq; /* (c) trim request queue */
struct trimlist_hashhead *um_trimhash; /* (i) trimlist hash table */
u_long um_trimlisthashsize; /* (i) trim hash table size-1 */
struct fsfail_task *um_fsfail_task; /* (i) task for fsfail cleanup*/
/* (c) - below function ptrs */
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 *);
int (*um_check_blkno)(struct mount *, ino_t, daddr_t, int);
};
/*
* filesystem flags
*/
#define UM_CANDELETE 0x00000001 /* devvp supports TRIM */
#define UM_WRITESUSPENDED 0x00000002 /* suspension in progress */
#define UM_CANSPEEDUP 0x00000004 /* devvp supports SPEEDUP */
#define UM_FSFAIL_CLEANUP 0x00000008 /* need cleanup after
unrecoverable error */
/*
* function prototypes
*/
#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_CHECK_BLKNO(aa, bb, cc, dd) \
(VFSTOUFS(aa)->um_check_blkno == NULL ? 0 : \
VFSTOUFS(aa)->um_check_blkno(aa, bb, cc, dd))
#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 /* _KERNEL */
#endif
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