NetBSD-5.0.2/sys/sys/vnode.h
/* $NetBSD: vnode.h,v 1.197.10.1 2009/07/21 00:29:32 snj Exp $ */
/*-
* Copyright (c) 2008 The NetBSD Foundation, Inc.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* Copyright (c) 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.
*
* @(#)vnode.h 8.17 (Berkeley) 5/20/95
*/
#ifndef _SYS_VNODE_H_
#define _SYS_VNODE_H_
#include <sys/event.h>
#include <sys/queue.h>
#include <sys/condvar.h>
#include <sys/rwlock.h>
#include <sys/mutex.h>
/* XXX: clean up includes later */
#include <uvm/uvm_param.h> /* XXX */
#include <uvm/uvm_pglist.h> /* XXX */
#include <uvm/uvm_object.h> /* XXX */
#include <uvm/uvm_extern.h> /* XXX */
struct namecache;
struct uvm_ractx;
/*
* The vnode is the focus of all file activity in UNIX. There is a
* unique vnode allocated for each active file, each current directory,
* each mounted-on file, text file, and the root.
*/
/*
* Vnode types. VNON means no type. __VTYPE_DEFINED allows other
* sources to override this definition. __VTYPE_DEFINED should be
* considered a temporary feature.
*/
#ifndef __VTYPE_DEFINED
#define __VTYPE_DEFINED
enum vtype { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO, VBAD };
#endif /* __VTYPE_DEFINED */
#define VNODE_TYPES \
"VNON", "VREG", "VDIR", "VBLK", "VCHR", "VLNK", "VSOCK", "VFIFO", "VBAD"
/*
* Vnode tag types.
* These are for the benefit of external programs only (e.g., pstat)
* and should NEVER be inspected by the kernel.
*/
enum vtagtype {
VT_NON, VT_UFS, VT_NFS, VT_MFS, VT_MSDOSFS, VT_LFS, VT_LOFS,
VT_FDESC, VT_PORTAL, VT_NULL, VT_UMAP, VT_KERNFS, VT_PROCFS,
VT_AFS, VT_ISOFS, VT_UNION, VT_ADOSFS, VT_EXT2FS, VT_CODA,
VT_FILECORE, VT_NTFS, VT_VFS, VT_OVERLAY, VT_SMBFS, VT_PTYFS,
VT_TMPFS, VT_UDF, VT_SYSVBFS, VT_PUFFS, VT_HFS, VT_EFS, VT_ZFS
};
#define VNODE_TAGS \
"VT_NON", "VT_UFS", "VT_NFS", "VT_MFS", "VT_MSDOSFS", "VT_LFS", "VT_LOFS", \
"VT_FDESC", "VT_PORTAL", "VT_NULL", "VT_UMAP", "VT_KERNFS", "VT_PROCFS", \
"VT_AFS", "VT_ISOFS", "VT_UNION", "VT_ADOSFS", "VT_EXT2FS", "VT_CODA", \
"VT_FILECORE", "VT_NTFS", "VT_VFS", "VT_OVERLAY", "VT_SMBFS", "VT_PTYFS", \
"VT_TMPFS", "VT_UDF", "VT_SYSVBFS", "VT_PUFFS", "VT_HFS", "VT_EFS", "VT_ZFS"
struct vnode;
struct buf;
LIST_HEAD(buflists, buf);
TAILQ_HEAD(vnodelst, vnode);
struct vnlock {
krwlock_t vl_lock;
u_int vl_canrecurse;
u_int vl_recursecnt;
};
/*
* Reading or writing any of these items requires holding the appropriate
* lock. Field markings and the corresponding locks:
*
* : stable, reference to the vnode is is required
* f vnode_free_list_lock, or vrele_lock if VI_INACTPEND
* i v_interlock
* m mntvnode_lock
* n namecache_lock
* s syncer_data_lock
* u locked by underlying filesystem
* v v_vnlock
* x v_interlock + bufcache_lock to modify, either to inspect
*
* Each underlying filesystem allocates its own private area and hangs
* it from v_data.
*/
struct vnode {
struct uvm_object v_uobj; /* i: the VM object */
kcondvar_t v_cv; /* i: synchronization */
voff_t v_size; /* i: size of file */
voff_t v_writesize; /* i: new size after write */
int v_iflag; /* i: VI_* flags */
int v_vflag; /* v: VV_* flags */
int v_uflag; /* u: VU_* flags */
int v_numoutput; /* i: # of pending writes */
int v_writecount; /* i: ref count of writers */
int v_holdcnt; /* i: page & buffer refs */
int v_synclist_slot; /* s: synclist slot index */
struct mount *v_mount; /* v: ptr to vfs we are in */
int (**v_op)(void *); /* :: vnode operations vector */
TAILQ_ENTRY(vnode) v_freelist; /* f: vnode freelist */
struct vnodelst *v_freelisthd; /* f: which freelist? */
TAILQ_ENTRY(vnode) v_mntvnodes; /* m: vnodes for mount point */
struct buflists v_cleanblkhd; /* x: clean blocklist head */
struct buflists v_dirtyblkhd; /* x: dirty blocklist head */
TAILQ_ENTRY(vnode) v_synclist; /* s: vnodes with dirty bufs */
LIST_HEAD(, namecache) v_dnclist; /* n: namecaches (children) */
LIST_HEAD(, namecache) v_nclist; /* n: namecaches (parent) */
union {
struct mount *vu_mountedhere;/* v: ptr to vfs (VDIR) */
struct socket *vu_socket; /* v: unix ipc (VSOCK) */
struct specnode *vu_specnode; /* v: device (VCHR, VBLK) */
struct fifoinfo *vu_fifoinfo; /* v: fifo (VFIFO) */
struct uvm_ractx *vu_ractx; /* i: read-ahead ctx (VREG) */
} v_un;
enum vtype v_type; /* :: vnode type */
enum vtagtype v_tag; /* :: type of underlying data */
struct vnlock v_lock; /* v: lock for this vnode */
struct vnlock *v_vnlock; /* v: pointer to lock */
void *v_data; /* :: private data for fs */
struct klist v_klist; /* i: notes attached to vnode */
};
#define v_usecount v_uobj.uo_refs
#define v_interlock v_uobj.vmobjlock
#define v_mountedhere v_un.vu_mountedhere
#define v_socket v_un.vu_socket
#define v_specnode v_un.vu_specnode
#define v_fifoinfo v_un.vu_fifoinfo
#define v_ractx v_un.vu_ractx
typedef struct vnodelst vnodelst_t;
typedef struct vnode vnode_t;
/*
* All vnode locking operations should use vp->v_vnlock. For leaf filesystems
* (such as ffs, lfs, msdosfs, etc), vp->v_vnlock = &vp->v_lock. For
* stacked filesystems, vp->v_vnlock may equal lowervp->v_vnlock.
*
* vp->v_vnlock may also be NULL, which indicates that a leaf node does not
* export a struct lock for vnode locking. Stacked filesystems (such as
* nullfs) must call the underlying fs for locking. See layerfs_ routines
* for examples.
*
* All filesystems must (pretend to) understand lockmanager flags.
*/
/*
* Vnode flags. The first set are locked by vp->v_vnlock or are stable.
* VSYSTEM is only used to skip vflush()ing quota files. VISTTY is used
* when reading dead vnodes.
*/
#define VV_ROOT 0x00000001 /* root of its file system */
#define VV_SYSTEM 0x00000002 /* vnode being used by kernel */
#define VV_ISTTY 0x00000004 /* vnode represents a tty */
#define VV_MAPPED 0x00000008 /* vnode might have user mappings */
#define VV_MPSAFE 0x00000010 /* file system code is MP safe */
#define VV_LOCKSWORK 0x00000020 /* FS supports locking discipline */
/* XXXAD ALIASED should be covered by spec lock? */
/*
* The second set are locked by vp->v_interlock.
*/
#define VI_TEXT 0x00000100 /* vnode is a pure text prototype */
#define VI_EXECMAP 0x00000200 /* might have PROT_EXEC mappings */
#define VI_WRMAP 0x00000400 /* might have PROT_WRITE u. mappings */
#define VI_WRMAPDIRTY 0x00000800 /* might have dirty pages */
#define VI_XLOCK 0x00001000 /* vnode is locked to change type */
#define VI_ONWORKLST 0x00004000 /* On syncer work-list */
#define VI_MARKER 0x00008000 /* Dummy marker vnode */
#define VI_LAYER 0x00020000 /* vnode is on a layer filesystem */
#define VI_CLEAN 0x00080000 /* has been reclaimed */
#define VI_INACTPEND 0x00100000 /* inactivation is pending */
#define VI_INACTREDO 0x00200000 /* need to redo VOP_INACTIVE() */
#define VI_FREEING 0x00400000 /* vnode is being freed */
#define VI_INACTNOW 0x00800000 /* VOP_INACTIVE() in progress */
/*
* The third set are locked by the underlying file system.
*/
#define VU_DIROP 0x01000000 /* LFS: involved in a directory op */
#define VU_SOFTDEP 0x02000000 /* FFS: involved in softdep processing */
#define VNODE_FLAGBITS \
"\20\1ROOT\2SYSTEM\3ISTTY\4MAPPED\5MPSAFE\6LOCKSWORK\11TEXT\12EXECMAP" \
"\13WRMAP\14WRMAPDIRTY\15XLOCK\17ONWORKLST\20MARKER" \
"\22LAYER\24CLEAN\25INACTPEND\26INACTREDO\27FREEING" \
"\28INACTNOW\31DIROP\32SOFTDEP"
#define VSIZENOTSET ((voff_t)-1)
/*
* v_usecount; see the comment in vfs_subr.c
*/
#define VC_XLOCK 0x80000000
#define VC_MASK 0x7fffffff
/*
* Vnode attributes. A field value of VNOVAL represents a field whose value
* is unavailable (getattr) or which is not to be changed (setattr).
*/
struct vattr {
enum vtype va_type; /* vnode type (for create) */
mode_t va_mode; /* files access mode and type */
nlink_t va_nlink; /* number of references to file */
uid_t va_uid; /* owner user id */
gid_t va_gid; /* owner group id */
long va_fsid; /* file system id (dev for now) */
ino_t va_fileid; /* file id */
u_quad_t va_size; /* file size in bytes */
long va_blocksize; /* blocksize preferred for i/o */
struct timespec va_atime; /* time of last access */
struct timespec va_mtime; /* time of last modification */
struct timespec va_ctime; /* time file changed */
struct timespec va_birthtime; /* time file created */
u_long va_gen; /* generation number of file */
u_long va_flags; /* flags defined for file */
dev_t va_rdev; /* device the special file represents */
u_quad_t va_bytes; /* bytes of disk space held by file */
u_quad_t va_filerev; /* file modification number */
u_int va_vaflags; /* operations flags, see below */
long va_spare; /* remain quad aligned */
};
/*
* Flags for va_vaflags.
*/
#define VA_UTIMES_NULL 0x01 /* utimes argument was NULL */
#define VA_EXCLUSIVE 0x02 /* exclusive create request */
#ifdef _KERNEL
/*
* Flags for ioflag.
*/
#define IO_UNIT 0x00010 /* do I/O as atomic unit */
#define IO_APPEND 0x00020 /* append write to end */
#define IO_SYNC (0x40|IO_DSYNC) /* sync I/O file integrity completion */
#define IO_NODELOCKED 0x00080 /* underlying node already locked */
#define IO_NDELAY 0x00100 /* FNDELAY flag set in file table */
#define IO_DSYNC 0x00200 /* sync I/O data integrity completion */
#define IO_ALTSEMANTICS 0x00400 /* use alternate i/o semantics */
#define IO_NORMAL 0x00800 /* operate on regular data */
#define IO_EXT 0x01000 /* operate on extended attributes */
#define IO_DIRECT 0x02000 /* direct I/O hint */
#define IO_JOURNALLOCKED 0x04000 /* journal is already locked */
#define IO_ADV_MASK 0x00003 /* access pattern hint */
#define IO_ADV_SHIFT 0
#define IO_ADV_ENCODE(adv) (((adv) << IO_ADV_SHIFT) & IO_ADV_MASK)
#define IO_ADV_DECODE(ioflag) (((ioflag) & IO_ADV_MASK) >> IO_ADV_SHIFT)
/*
* Modes.
*/
#define VREAD 00004 /* read, write, execute permissions */
#define VWRITE 00002
#define VEXEC 00001
/*
* Token indicating no attribute value yet assigned.
*/
#define VNOVAL (-1)
/*
* Convert between vnode types and inode formats (since POSIX.1
* defines mode word of stat structure in terms of inode formats).
*/
extern const enum vtype iftovt_tab[];
extern const int vttoif_tab[];
#define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12])
#define VTTOIF(indx) (vttoif_tab[(int)(indx)])
#define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode))
/*
* Flags to various vnode functions.
*/
#define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */
#define FORCECLOSE 0x0002 /* vflush: force file closeure */
#define WRITECLOSE 0x0004 /* vflush: only close writable files */
#define DOCLOSE 0x0008 /* vclean: close active files */
#define V_SAVE 0x0001 /* vinvalbuf: sync file first */
/*
* Flags to various vnode operations.
*/
#define REVOKEALL 0x0001 /* revoke: revoke all aliases */
#define FSYNC_WAIT 0x0001 /* fsync: wait for completion */
#define FSYNC_DATAONLY 0x0002 /* fsync: hint: sync file data only */
#define FSYNC_RECLAIM 0x0004 /* fsync: hint: vnode is being reclaimed */
#define FSYNC_LAZY 0x0008 /* fsync: lazy sync (trickle) */
#define FSYNC_NOLOG 0x0010 /* fsync: do not flush the log */
#define FSYNC_CACHE 0x0100 /* fsync: flush disk caches too */
#define FSYNC_VFS 0x0200 /* fsync: via FSYNC_VFS() */
#define UPDATE_WAIT 0x0001 /* update: wait for completion */
#define UPDATE_DIROP 0x0002 /* update: hint to fs to wait or not */
#define UPDATE_CLOSE 0x0004 /* update: clean up on close */
#define HOLDRELE(vp) holdrele(vp)
#define VHOLD(vp) vhold(vp)
#define VREF(vp) vref(vp)
extern kmutex_t vnode_free_list_lock;
void holdrelel(struct vnode *);
void vholdl(struct vnode *);
void vref(struct vnode *);
static __inline void holdrele(struct vnode *) __unused;
static __inline void vhold(struct vnode *) __unused;
#define VATTR_NULL(vap) vattr_null(vap)
/*
* decrease buf or page ref
*/
static __inline void
holdrele(struct vnode *vp)
{
mutex_enter(&vp->v_interlock);
holdrelel(vp);
mutex_exit(&vp->v_interlock);
}
/*
* increase buf or page ref
*/
static __inline void
vhold(struct vnode *vp)
{
mutex_enter(&vp->v_interlock);
vholdl(vp);
mutex_exit(&vp->v_interlock);
}
static __inline bool
vismarker(struct vnode *vp)
{
return (vp->v_iflag & VI_MARKER) != 0;
}
#define NULLVP ((struct vnode *)NULL)
static __inline void
VN_KNOTE(struct vnode *vp, long hint)
{
mutex_enter(&vp->v_interlock);
KNOTE(&vp->v_klist, hint);
mutex_exit(&vp->v_interlock);
}
/*
* Global vnode data.
*/
extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
extern int desiredvnodes; /* number of vnodes desired */
extern u_int numvnodes; /* current number of vnodes */
extern time_t syncdelay; /* max time to delay syncing data */
extern time_t filedelay; /* time to delay syncing files */
extern time_t dirdelay; /* time to delay syncing directories */
extern time_t metadelay; /* time to delay syncing metadata */
/*
* Macro/function to check for client cache inconsistency w.r.t. leasing.
*/
#define LEASE_READ 0x1 /* Check lease for readers */
#define LEASE_WRITE 0x2 /* Check lease for modifiers */
#endif /* _KERNEL */
/*
* Mods for exensibility.
*/
/*
* Flags for vdesc_flags:
*/
#define VDESC_MAX_VPS 8
/* Low order 16 flag bits are reserved for willrele flags for vp arguments. */
#define VDESC_VP0_WILLRELE 0x00000001
#define VDESC_VP1_WILLRELE 0x00000002
#define VDESC_VP2_WILLRELE 0x00000004
#define VDESC_VP3_WILLRELE 0x00000008
#define VDESC_VP0_WILLUNLOCK 0x00000100
#define VDESC_VP1_WILLUNLOCK 0x00000200
#define VDESC_VP2_WILLUNLOCK 0x00000400
#define VDESC_VP3_WILLUNLOCK 0x00000800
#define VDESC_VP0_WILLPUT 0x00000101
#define VDESC_VP1_WILLPUT 0x00000202
#define VDESC_VP2_WILLPUT 0x00000404
#define VDESC_VP3_WILLPUT 0x00000808
#define VDESC_NOMAP_VPP 0x00010000
#define VDESC_VPP_WILLRELE 0x00020000
/*
* VDESC_NO_OFFSET is used to identify the end of the offset list
* and in places where no such field exists.
*/
#define VDESC_NO_OFFSET -1
/*
* This structure describes the vnode operation taking place.
*/
struct vnodeop_desc {
int vdesc_offset; /* offset in vector--first for speed */
const char *vdesc_name; /* a readable name for debugging */
int vdesc_flags; /* VDESC_* flags */
/*
* These ops are used by bypass routines to map and locate arguments.
* Creds and procs are not needed in bypass routines, but sometimes
* they are useful to (for example) transport layers.
* Nameidata is useful because it has a cred in it.
*/
const int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */
int vdesc_vpp_offset; /* return vpp location */
int vdesc_cred_offset; /* cred location, if any */
int vdesc_componentname_offset; /* if any */
/*
* Finally, we've got a list of private data (about each operation)
* for each transport layer. (Support to manage this list is not
* yet part of BSD.)
*/
void * *vdesc_transports;
};
#ifdef _KERNEL
#include <sys/mallocvar.h>
MALLOC_DECLARE(M_CACHE);
MALLOC_DECLARE(M_VNODE);
/*
* A list of all the operation descs.
*/
extern struct vnodeop_desc *vnodeop_descs[];
/*
* Interlock for scanning list of vnodes attached to a mountpoint
*/
extern kmutex_t mntvnode_lock;
/*
* Union filesystem hook for vn_readdir().
*/
extern int (*vn_union_readdir_hook) (struct vnode **, struct file *, struct lwp *);
/*
* This macro is very helpful in defining those offsets in the vdesc struct.
*
* This is stolen from X11R4. I ingored all the fancy stuff for
* Crays, so if you decide to port this to such a serious machine,
* you might want to consult Intrisics.h's XtOffset{,Of,To}.
*/
#define VOPARG_OFFSET(p_type,field) \
((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
#define VOPARG_OFFSETOF(s_type,field) \
VOPARG_OFFSET(s_type*,field)
#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \
((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET)))
/*
* This structure is used to configure the new vnodeops vector.
*/
struct vnodeopv_entry_desc {
const struct vnodeop_desc *opve_op; /* which operation this is */
int (*opve_impl)(void *); /* code implementing this operation */
};
struct vnodeopv_desc {
/* ptr to the ptr to the vector where op should go */
int (***opv_desc_vector_p)(void *);
const struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */
};
/*
* A default routine which just returns an error.
*/
int vn_default_error(void *);
/*
* A generic structure.
* This can be used by bypass routines to identify generic arguments.
*/
struct vop_generic_args {
struct vnodeop_desc *a_desc;
/* other random data follows, presumably */
};
/*
* VOCALL calls an op given an ops vector. We break it out because BSD's
* vclean changes the ops vector and then wants to call ops with the old
* vector.
*/
/*
* actually, vclean doesn't use it anymore, but nfs does,
* for device specials and fifos.
*/
#define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP))
/*
* This call works for vnodes in the kernel.
*/
#define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP))
#define VDESC(OP) (& __CONCAT(OP,_desc))
#define VOFFSET(OP) (VDESC(OP)->vdesc_offset)
/* XXX This include should go away */
#include <sys/mount.h>
/*
* Finally, include the default set of vnode operations.
*/
#include <sys/vnode_if.h>
/*
* Public vnode manipulation functions.
*/
struct file;
struct filedesc;
struct nameidata;
struct proc;
struct stat;
struct uio;
struct vattr;
struct vnode;
/* see vnode(9) */
int bdevvp(dev_t, struct vnode **);
int cdevvp(dev_t, struct vnode **);
int getnewvnode(enum vtagtype, struct mount *, int (**)(void *),
struct vnode **);
void ungetnewvnode(struct vnode *);
int vaccess(enum vtype, mode_t, uid_t, gid_t, mode_t, kauth_cred_t);
void vattr_null(struct vattr *);
int vcount(struct vnode *);
void vdevgone(int, int, int, enum vtype);
int vfinddev(dev_t, enum vtype, struct vnode **);
int vflush(struct mount *, struct vnode *, int);
void vflushbuf(struct vnode *, int);
int vget(struct vnode *, int);
bool vtryget(struct vnode *);
void vgone(struct vnode *);
void vgonel(struct vnode *, struct lwp *);
int vinvalbuf(struct vnode *, int, kauth_cred_t, struct lwp *, bool, int);
void vprint(const char *, struct vnode *);
void vput(struct vnode *);
int vrecycle(struct vnode *, kmutex_t *, struct lwp *);
void vrele(struct vnode *);
int vtruncbuf(struct vnode *, daddr_t, bool, int);
void vwakeup(struct buf *);
void vwait(struct vnode *, int);
void vclean(struct vnode *, int);
void vrevoke(struct vnode *);
void vrelel(struct vnode *, int);
#define VRELEL_NOINACTIVE 0x01
#define VRELEL_ONHEAD 0x02
struct vnode *
vnalloc(struct mount *);
void vnfree(struct vnode *);
void vmark(struct vnode *, struct vnode *);
struct vnode *
vunmark(struct vnode *);
void vn_init1(void);
/* see vnsubr(9) */
int vn_bwrite(void *);
int vn_close(struct vnode *, int, kauth_cred_t);
int vn_isunder(struct vnode *, struct vnode *, struct lwp *);
int vn_lock(struct vnode *, int);
void vn_markexec(struct vnode *);
int vn_marktext(struct vnode *);
int vn_open(struct nameidata *, int, int);
int vn_rdwr(enum uio_rw, struct vnode *, void *, int, off_t, enum uio_seg,
int, kauth_cred_t, size_t *, struct lwp *);
int vn_readdir(struct file *, char *, int, u_int, int *, struct lwp *,
off_t **, int *);
void vn_restorerecurse(struct vnode *, u_int);
u_int vn_setrecurse(struct vnode *);
int vn_stat(struct vnode *, struct stat *);
int vn_kqfilter(struct file *, struct knote *);
int vn_writechk(struct vnode *);
int vn_openchk(struct vnode *, kauth_cred_t, int);
int vn_extattr_get(struct vnode *, int, int, const char *, size_t *,
void *, struct lwp *);
int vn_extattr_set(struct vnode *, int, int, const char *, size_t,
const void *, struct lwp *);
int vn_extattr_rm(struct vnode *, int, int, const char *, struct lwp *);
void vn_ra_allocctx(struct vnode *);
/* initialise global vnode management */
void vntblinit(void);
/* misc stuff */
void vn_syncer_add_to_worklist(struct vnode *, int);
void vn_syncer_remove_from_worklist(struct vnode *);
int speedup_syncer(void);
int dorevoke(struct vnode *, kauth_cred_t);
int vlockmgr(struct vnlock *, int);
int vlockstatus(struct vnlock *);
/* see vfssubr(9) */
void vfs_getnewfsid(struct mount *);
int vfs_drainvnodes(long target, struct lwp *);
void vfs_timestamp(struct timespec *);
#ifdef DDB
void vfs_vnode_print(struct vnode *, int, void (*)(const char *, ...));
void vfs_mount_print(struct mount *, int, void (*)(const char *, ...));
#endif /* DDB */
#endif /* _KERNEL */
#endif /* !_SYS_VNODE_H_ */