22db15c06f
conjuction with 'thread' argument passing which is always curthread. Remove the unuseful extra-argument and pass explicitly curthread to lower layer functions, when necessary. KPI results broken by this change, which should affect several ports, so version bumping and manpage update will be further committed. Tested by: kris, pho, Diego Sardina <siarodx at gmail dot com>
743 lines
26 KiB
C
743 lines
26 KiB
C
/*-
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)vnode.h 8.7 (Berkeley) 2/4/94
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* $FreeBSD$
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*/
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#ifndef _SYS_VNODE_H_
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#define _SYS_VNODE_H_
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/*
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* XXX - compatability until lockmgr() goes away or all the #includes are
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* updated.
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*/
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#include <sys/lockmgr.h>
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#include <sys/bufobj.h>
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#include <sys/queue.h>
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#include <sys/_lock.h>
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#include <sys/lock.h>
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#include <sys/_mutex.h>
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#include <sys/mutex.h>
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#include <sys/selinfo.h>
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#include <sys/uio.h>
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#include <sys/acl.h>
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#include <sys/ktr.h>
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/*
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* The vnode is the focus of all file activity in UNIX. There is a
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* unique vnode allocated for each active file, each current directory,
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* each mounted-on file, text file, and the root.
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*/
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/*
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* Vnode types. VNON means no type.
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*/
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enum vtype { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO, VBAD,
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VMARKER };
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/*
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* Each underlying filesystem allocates its own private area and hangs
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* it from v_data. If non-null, this area is freed in getnewvnode().
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*/
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struct namecache;
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struct vpollinfo {
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struct mtx vpi_lock; /* lock to protect below */
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struct selinfo vpi_selinfo; /* identity of poller(s) */
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short vpi_events; /* what they are looking for */
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short vpi_revents; /* what has happened */
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};
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/*
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* Reading or writing any of these items requires holding the appropriate lock.
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*
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* Lock reference:
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* c - namecache mutex
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* f - freelist mutex
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* G - Giant
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* i - interlock
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* m - mntvnodes mutex
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* p - pollinfo lock
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* s - spechash mutex
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* S - syncer mutex
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* u - Only a reference to the vnode is needed to read.
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* v - vnode lock
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*
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* Vnodes may be found on many lists. The general way to deal with operating
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* on a vnode that is on a list is:
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* 1) Lock the list and find the vnode.
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* 2) Lock interlock so that the vnode does not go away.
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* 3) Unlock the list to avoid lock order reversals.
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* 4) vget with LK_INTERLOCK and check for ENOENT, or
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* 5) Check for DOOMED if the vnode lock is not required.
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* 6) Perform your operation, then vput().
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*
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* XXX Not all fields are locked yet and some fields that are marked are not
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* locked consistently. This is a work in progress. Requires Giant!
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*/
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#if defined(_KERNEL) || defined(_KVM_VNODE)
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struct vnode {
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/*
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* Fields which define the identity of the vnode. These fields are
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* owned by the filesystem (XXX: and vgone() ?)
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*/
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enum vtype v_type; /* u vnode type */
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const char *v_tag; /* u type of underlying data */
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struct vop_vector *v_op; /* u vnode operations vector */
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void *v_data; /* u private data for fs */
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/*
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* Filesystem instance stuff
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*/
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struct mount *v_mount; /* u ptr to vfs we are in */
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TAILQ_ENTRY(vnode) v_nmntvnodes; /* m vnodes for mount point */
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/*
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* Type specific fields, only one applies to any given vnode.
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* See #defines below for renaming to v_* namespace.
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*/
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union {
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struct mount *vu_mount; /* v ptr to mountpoint (VDIR) */
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struct socket *vu_socket; /* v unix domain net (VSOCK) */
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struct cdev *vu_cdev; /* v device (VCHR, VBLK) */
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struct fifoinfo *vu_fifoinfo; /* v fifo (VFIFO) */
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} v_un;
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/*
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* vfs_hash: (mount + inode) -> vnode hash.
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*/
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LIST_ENTRY(vnode) v_hashlist;
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u_int v_hash;
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/*
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* VFS_namecache stuff
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*/
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LIST_HEAD(, namecache) v_cache_src; /* c Cache entries from us */
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TAILQ_HEAD(, namecache) v_cache_dst; /* c Cache entries to us */
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struct vnode *v_dd; /* c .. vnode */
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/*
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* clustering stuff
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*/
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daddr_t v_cstart; /* v start block of cluster */
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daddr_t v_lasta; /* v last allocation */
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daddr_t v_lastw; /* v last write */
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int v_clen; /* v length of cur. cluster */
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/*
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* Locking
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*/
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struct lock v_lock; /* u (if fs don't have one) */
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struct mtx v_interlock; /* lock for "i" things */
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struct lock *v_vnlock; /* u pointer to vnode lock */
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int v_holdcnt; /* i prevents recycling. */
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int v_usecount; /* i ref count of users */
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u_long v_iflag; /* i vnode flags (see below) */
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u_long v_vflag; /* v vnode flags */
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int v_writecount; /* v ref count of writers */
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/*
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* The machinery of being a vnode
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*/
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TAILQ_ENTRY(vnode) v_freelist; /* f vnode freelist */
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struct bufobj v_bufobj; /* * Buffer cache object */
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/*
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* Hooks for various subsystems and features.
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*/
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struct vpollinfo *v_pollinfo; /* G Poll events, p for *v_pi */
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struct label *v_label; /* MAC label for vnode */
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};
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#endif /* defined(_KERNEL) || defined(_KVM_VNODE) */
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#define v_mountedhere v_un.vu_mount
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#define v_socket v_un.vu_socket
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#define v_rdev v_un.vu_cdev
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#define v_fifoinfo v_un.vu_fifoinfo
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/* XXX: These are temporary to avoid a source sweep at this time */
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#define v_object v_bufobj.bo_object
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/*
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* Userland version of struct vnode, for sysctl.
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*/
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struct xvnode {
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size_t xv_size; /* sizeof(struct xvnode) */
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void *xv_vnode; /* address of real vnode */
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u_long xv_flag; /* vnode vflags */
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int xv_usecount; /* reference count of users */
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int xv_writecount; /* reference count of writers */
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int xv_holdcnt; /* page & buffer references */
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u_long xv_id; /* capability identifier */
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void *xv_mount; /* address of parent mount */
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long xv_numoutput; /* num of writes in progress */
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enum vtype xv_type; /* vnode type */
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union {
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void *xvu_socket; /* socket, if VSOCK */
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void *xvu_fifo; /* fifo, if VFIFO */
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dev_t xvu_rdev; /* maj/min, if VBLK/VCHR */
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struct {
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dev_t xvu_dev; /* device, if VDIR/VREG/VLNK */
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ino_t xvu_ino; /* id, if VDIR/VREG/VLNK */
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} xv_uns;
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} xv_un;
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};
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#define xv_socket xv_un.xvu_socket
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#define xv_fifo xv_un.xvu_fifo
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#define xv_rdev xv_un.xvu_rdev
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#define xv_dev xv_un.xv_uns.xvu_dev
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#define xv_ino xv_un.xv_uns.xvu_ino
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/* We don't need to lock the knlist */
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#define VN_KNLIST_EMPTY(vp) ((vp)->v_pollinfo == NULL || \
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KNLIST_EMPTY(&(vp)->v_pollinfo->vpi_selinfo.si_note))
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#define VN_KNOTE(vp, b, a) \
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do { \
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if (!VN_KNLIST_EMPTY(vp)) \
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KNOTE(&vp->v_pollinfo->vpi_selinfo.si_note, (b), (a)); \
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} while (0)
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#define VN_KNOTE_LOCKED(vp, b) VN_KNOTE(vp, b, 1)
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#define VN_KNOTE_UNLOCKED(vp, b) VN_KNOTE(vp, b, 0)
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/*
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* Vnode flags.
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* VI flags are protected by interlock and live in v_iflag
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* VV flags are protected by the vnode lock and live in v_vflag
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*/
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#define VI_MOUNT 0x0020 /* Mount in progress */
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#define VI_AGE 0x0040 /* Insert vnode at head of free list */
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#define VI_DOOMED 0x0080 /* This vnode is being recycled */
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#define VI_FREE 0x0100 /* This vnode is on the freelist */
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#define VI_OBJDIRTY 0x0400 /* object might be dirty */
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#define VI_DOINGINACT 0x0800 /* VOP_INACTIVE is in progress */
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#define VI_OWEINACT 0x1000 /* Need to call inactive */
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#define VV_ROOT 0x0001 /* root of its filesystem */
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#define VV_ISTTY 0x0002 /* vnode represents a tty */
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#define VV_NOSYNC 0x0004 /* unlinked, stop syncing */
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#define VV_CACHEDLABEL 0x0010 /* Vnode has valid cached MAC label */
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#define VV_TEXT 0x0020 /* vnode is a pure text prototype */
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#define VV_COPYONWRITE 0x0040 /* vnode is doing copy-on-write */
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#define VV_SYSTEM 0x0080 /* vnode being used by kernel */
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#define VV_PROCDEP 0x0100 /* vnode is process dependent */
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#define VV_NOKNOTE 0x0200 /* don't activate knotes on this vnode */
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#define VV_DELETED 0x0400 /* should be removed */
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#define VV_MD 0x0800 /* vnode backs the md device */
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/*
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* Vnode attributes. A field value of VNOVAL represents a field whose value
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* is unavailable (getattr) or which is not to be changed (setattr).
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*/
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struct vattr {
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enum vtype va_type; /* vnode type (for create) */
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u_short va_mode; /* files access mode and type */
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short va_nlink; /* number of references to file */
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uid_t va_uid; /* owner user id */
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gid_t va_gid; /* owner group id */
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dev_t va_fsid; /* filesystem id */
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long va_fileid; /* file id */
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u_quad_t va_size; /* file size in bytes */
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long va_blocksize; /* blocksize preferred for i/o */
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struct timespec va_atime; /* time of last access */
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struct timespec va_mtime; /* time of last modification */
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struct timespec va_ctime; /* time file changed */
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struct timespec va_birthtime; /* time file created */
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u_long va_gen; /* generation number of file */
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u_long va_flags; /* flags defined for file */
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dev_t va_rdev; /* device the special file represents */
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u_quad_t va_bytes; /* bytes of disk space held by file */
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u_quad_t va_filerev; /* file modification number */
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u_int va_vaflags; /* operations flags, see below */
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long va_spare; /* remain quad aligned */
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};
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/*
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* Flags for va_vaflags.
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*/
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#define VA_UTIMES_NULL 0x01 /* utimes argument was NULL */
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#define VA_EXCLUSIVE 0x02 /* exclusive create request */
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#define VA_MARK_ATIME 0x04 /* setting atime for execve/mmap */
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/*
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* Flags for ioflag. (high 16 bits used to ask for read-ahead and
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* help with write clustering)
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* NB: IO_NDELAY and IO_DIRECT are linked to fcntl.h
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*/
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#define IO_UNIT 0x0001 /* do I/O as atomic unit */
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#define IO_APPEND 0x0002 /* append write to end */
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#define IO_NDELAY 0x0004 /* FNDELAY flag set in file table */
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#define IO_NODELOCKED 0x0008 /* underlying node already locked */
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#define IO_ASYNC 0x0010 /* bawrite rather then bdwrite */
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#define IO_VMIO 0x0020 /* data already in VMIO space */
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#define IO_INVAL 0x0040 /* invalidate after I/O */
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#define IO_SYNC 0x0080 /* do I/O synchronously */
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#define IO_DIRECT 0x0100 /* attempt to bypass buffer cache */
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#define IO_EXT 0x0400 /* operate on external attributes */
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#define IO_NORMAL 0x0800 /* operate on regular data */
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#define IO_NOMACCHECK 0x1000 /* MAC checks unnecessary */
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#define IO_SEQMAX 0x7F /* seq heuristic max value */
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#define IO_SEQSHIFT 16 /* seq heuristic in upper 16 bits */
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/*
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* Modes. Some values same as Ixxx entries from inode.h for now.
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*/
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#define VEXEC 000100 /* execute/search permission */
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#define VWRITE 000200 /* write permission */
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#define VREAD 000400 /* read permission */
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#define VSVTX 001000 /* save swapped text even after use */
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#define VSGID 002000 /* set group id on execution */
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#define VSUID 004000 /* set user id on execution */
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#define VADMIN 010000 /* permission to administer */
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#define VSTAT 020000 /* permission to retrieve attrs */
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#define VAPPEND 040000 /* permission to write/append */
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#define VALLPERM (VEXEC | VWRITE | VREAD | VADMIN | VSTAT | VAPPEND)
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/*
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* Token indicating no attribute value yet assigned.
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*/
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#define VNOVAL (-1)
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/*
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* LK_TIMELOCK timeout for vnode locks (used mainly by the pageout daemon)
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*/
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#define VLKTIMEOUT (hz / 20 + 1)
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#ifdef _KERNEL
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#ifdef MALLOC_DECLARE
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MALLOC_DECLARE(M_VNODE);
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#endif
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/*
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* Convert between vnode types and inode formats (since POSIX.1
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* defines mode word of stat structure in terms of inode formats).
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*/
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extern enum vtype iftovt_tab[];
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extern int vttoif_tab[];
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#define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12])
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#define VTTOIF(indx) (vttoif_tab[(int)(indx)])
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#define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode))
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/*
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* Flags to various vnode functions.
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*/
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#define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */
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#define FORCECLOSE 0x0002 /* vflush: force file closure */
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#define WRITECLOSE 0x0004 /* vflush: only close writable files */
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#define DOCLOSE 0x0008 /* vclean: close active files */
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#define V_SAVE 0x0001 /* vinvalbuf: sync file first */
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#define V_ALT 0x0002 /* vinvalbuf: invalidate only alternate bufs */
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#define V_NORMAL 0x0004 /* vinvalbuf: invalidate only regular bufs */
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#define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */
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#define V_WAIT 0x0001 /* vn_start_write: sleep for suspend */
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#define V_NOWAIT 0x0002 /* vn_start_write: don't sleep for suspend */
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#define V_XSLEEP 0x0004 /* vn_start_write: just return after sleep */
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#define VREF(vp) vref(vp)
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#ifdef DIAGNOSTIC
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#define VATTR_NULL(vap) vattr_null(vap)
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#else
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#define VATTR_NULL(vap) (*(vap) = va_null) /* initialize a vattr */
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#endif /* DIAGNOSTIC */
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#define NULLVP ((struct vnode *)NULL)
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/*
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* Global vnode data.
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*/
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extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
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extern int async_io_version; /* 0 or POSIX version of AIO i'face */
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extern int desiredvnodes; /* number of vnodes desired */
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extern struct uma_zone *namei_zone;
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extern int prtactive; /* nonzero to call vprint() */
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extern struct vattr va_null; /* predefined null vattr structure */
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/*
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* Macro/function to check for client cache inconsistency w.r.t. leasing.
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*/
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#define LEASE_READ 0x1 /* Check lease for readers */
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#define LEASE_WRITE 0x2 /* Check lease for modifiers */
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extern void (*lease_updatetime)(int deltat);
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#define VI_LOCK(vp) mtx_lock(&(vp)->v_interlock)
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#define VI_LOCK_FLAGS(vp, flags) mtx_lock_flags(&(vp)->v_interlock, (flags))
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#define VI_TRYLOCK(vp) mtx_trylock(&(vp)->v_interlock)
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#define VI_UNLOCK(vp) mtx_unlock(&(vp)->v_interlock)
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#define VI_MTX(vp) (&(vp)->v_interlock)
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#endif /* _KERNEL */
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/*
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* Mods for extensibility.
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*/
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/*
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* Flags for vdesc_flags:
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*/
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#define VDESC_MAX_VPS 16
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/* Low order 16 flag bits are reserved for willrele flags for vp arguments. */
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#define VDESC_VP0_WILLRELE 0x0001
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#define VDESC_VP1_WILLRELE 0x0002
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#define VDESC_VP2_WILLRELE 0x0004
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#define VDESC_VP3_WILLRELE 0x0008
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#define VDESC_NOMAP_VPP 0x0100
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#define VDESC_VPP_WILLRELE 0x0200
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/*
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* A generic structure.
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* This can be used by bypass routines to identify generic arguments.
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*/
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struct vop_generic_args {
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struct vnodeop_desc *a_desc;
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/* other random data follows, presumably */
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};
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typedef int vop_bypass_t(struct vop_generic_args *);
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/*
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* VDESC_NO_OFFSET is used to identify the end of the offset list
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* and in places where no such field exists.
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*/
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#define VDESC_NO_OFFSET -1
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/*
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* This structure describes the vnode operation taking place.
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*/
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struct vnodeop_desc {
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char *vdesc_name; /* a readable name for debugging */
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int vdesc_flags; /* VDESC_* flags */
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vop_bypass_t *vdesc_call; /* Function to call */
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|
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/*
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* These ops are used by bypass routines to map and locate arguments.
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|
* 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.
|
|
*/
|
|
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_thread_offset; /* thread location, if any */
|
|
int vdesc_componentname_offset; /* if any */
|
|
};
|
|
|
|
#ifdef _KERNEL
|
|
/*
|
|
* A list of all the operation descs.
|
|
*/
|
|
extern struct vnodeop_desc *vnodeop_descs[];
|
|
|
|
#define VOPARG_OFFSETOF(s_type, field) __offsetof(s_type, field)
|
|
#define VOPARG_OFFSETTO(s_type, s_offset, struct_p) \
|
|
((s_type)(((char*)(struct_p)) + (s_offset)))
|
|
|
|
|
|
#ifdef DEBUG_VFS_LOCKS
|
|
/*
|
|
* Support code to aid in debugging VFS locking problems. Not totally
|
|
* reliable since if the thread sleeps between changing the lock
|
|
* state and checking it with the assert, some other thread could
|
|
* change the state. They are good enough for debugging a single
|
|
* filesystem using a single-threaded test.
|
|
*/
|
|
void assert_vi_locked(struct vnode *vp, const char *str);
|
|
void assert_vi_unlocked(struct vnode *vp, const char *str);
|
|
void assert_vop_elocked(struct vnode *vp, const char *str);
|
|
#if 0
|
|
void assert_vop_elocked_other(struct vnode *vp, const char *str);
|
|
#endif
|
|
void assert_vop_locked(struct vnode *vp, const char *str);
|
|
#if 0
|
|
voi0 assert_vop_slocked(struct vnode *vp, const char *str);
|
|
#endif
|
|
void assert_vop_unlocked(struct vnode *vp, const char *str);
|
|
|
|
#define ASSERT_VI_LOCKED(vp, str) assert_vi_locked((vp), (str))
|
|
#define ASSERT_VI_UNLOCKED(vp, str) assert_vi_unlocked((vp), (str))
|
|
#define ASSERT_VOP_ELOCKED(vp, str) assert_vop_elocked((vp), (str))
|
|
#if 0
|
|
#define ASSERT_VOP_ELOCKED_OTHER(vp, str) assert_vop_locked_other((vp), (str))
|
|
#endif
|
|
#define ASSERT_VOP_LOCKED(vp, str) assert_vop_locked((vp), (str))
|
|
#if 0
|
|
#define ASSERT_VOP_SLOCKED(vp, str) assert_vop_slocked((vp), (str))
|
|
#endif
|
|
#define ASSERT_VOP_UNLOCKED(vp, str) assert_vop_unlocked((vp), (str))
|
|
|
|
#else /* !DEBUG_VFS_LOCKS */
|
|
|
|
#define ASSERT_VI_LOCKED(vp, str)
|
|
#define ASSERT_VI_UNLOCKED(vp, str)
|
|
#define ASSERT_VOP_ELOCKED(vp, str)
|
|
#if 0
|
|
#define ASSERT_VOP_ELOCKED_OTHER(vp, str)
|
|
#endif
|
|
#define ASSERT_VOP_LOCKED(vp, str)
|
|
#if 0
|
|
#define ASSERT_VOP_SLOCKED(vp, str)
|
|
#endif
|
|
#define ASSERT_VOP_UNLOCKED(vp, str)
|
|
#endif /* DEBUG_VFS_LOCKS */
|
|
|
|
|
|
/*
|
|
* This call works for vnodes in the kernel.
|
|
*/
|
|
#define VCALL(c) ((c)->a_desc->vdesc_call(c))
|
|
|
|
/*
|
|
* VMIO support inline
|
|
*/
|
|
|
|
extern int vmiodirenable;
|
|
|
|
static __inline int
|
|
vn_canvmio(struct vnode *vp)
|
|
{
|
|
if (vp && (vp->v_type == VREG || (vmiodirenable && vp->v_type == VDIR)))
|
|
return(TRUE);
|
|
return(FALSE);
|
|
}
|
|
|
|
/*
|
|
* Finally, include the default set of vnode operations.
|
|
*/
|
|
#include "vnode_if.h"
|
|
|
|
/*
|
|
* Public vnode manipulation functions.
|
|
*/
|
|
struct componentname;
|
|
struct file;
|
|
struct mount;
|
|
struct nameidata;
|
|
struct ostat;
|
|
struct thread;
|
|
struct proc;
|
|
struct stat;
|
|
struct nstat;
|
|
struct ucred;
|
|
struct uio;
|
|
struct vattr;
|
|
struct vnode;
|
|
|
|
extern int (*lease_check_hook)(struct vop_lease_args *);
|
|
|
|
/* cache_* may belong in namei.h. */
|
|
void cache_enter(struct vnode *dvp, struct vnode *vp,
|
|
struct componentname *cnp);
|
|
int cache_lookup(struct vnode *dvp, struct vnode **vpp,
|
|
struct componentname *cnp);
|
|
void cache_purge(struct vnode *vp);
|
|
void cache_purgevfs(struct mount *mp);
|
|
int change_dir(struct vnode *vp, struct thread *td);
|
|
int change_root(struct vnode *vp, struct thread *td);
|
|
void cvtstat(struct stat *st, struct ostat *ost);
|
|
void cvtnstat(struct stat *sb, struct nstat *nsb);
|
|
int getnewvnode(const char *tag, struct mount *mp, struct vop_vector *vops,
|
|
struct vnode **vpp);
|
|
int insmntque1(struct vnode *vp, struct mount *mp,
|
|
void (*dtr)(struct vnode *, void *), void *dtr_arg);
|
|
int insmntque(struct vnode *vp, struct mount *mp);
|
|
u_quad_t init_va_filerev(void);
|
|
int lease_check(struct vop_lease_args *ap);
|
|
int speedup_syncer(void);
|
|
#define textvp_fullpath(p, rb, rfb) \
|
|
vn_fullpath(FIRST_THREAD_IN_PROC(p), (p)->p_textvp, rb, rfb)
|
|
int vn_fullpath(struct thread *td, struct vnode *vn,
|
|
char **retbuf, char **freebuf);
|
|
int vaccess(enum vtype type, mode_t file_mode, uid_t file_uid,
|
|
gid_t file_gid, mode_t acc_mode, struct ucred *cred,
|
|
int *privused);
|
|
int vaccess_acl_posix1e(enum vtype type, uid_t file_uid,
|
|
gid_t file_gid, struct acl *acl, mode_t acc_mode,
|
|
struct ucred *cred, int *privused);
|
|
void vattr_null(struct vattr *vap);
|
|
int vcount(struct vnode *vp);
|
|
void vdrop(struct vnode *);
|
|
void vdropl(struct vnode *);
|
|
int vflush(struct mount *mp, int rootrefs, int flags, struct thread *td);
|
|
int vget(struct vnode *vp, int lockflag, struct thread *td);
|
|
void vgone(struct vnode *vp);
|
|
void vhold(struct vnode *);
|
|
void vholdl(struct vnode *);
|
|
int vinvalbuf(struct vnode *vp, int save,
|
|
struct thread *td, int slpflag, int slptimeo);
|
|
int vtruncbuf(struct vnode *vp, struct ucred *cred, struct thread *td,
|
|
off_t length, int blksize);
|
|
void vn_printf(struct vnode *vp, const char *fmt, ...) __printflike(2,3);
|
|
#define vprint(label, vp) vn_printf((vp), "%s\n", (label))
|
|
int vrecycle(struct vnode *vp, struct thread *td);
|
|
int vn_close(struct vnode *vp,
|
|
int flags, struct ucred *file_cred, struct thread *td);
|
|
void vn_finished_write(struct mount *mp);
|
|
void vn_finished_secondary_write(struct mount *mp);
|
|
int vn_isdisk(struct vnode *vp, int *errp);
|
|
int _vn_lock(struct vnode *vp, int flags, char *file, int line);
|
|
#define vn_lock(vp, flags) _vn_lock(vp, flags, __FILE__, __LINE__)
|
|
int vn_open(struct nameidata *ndp, int *flagp, int cmode, struct file *fp);
|
|
int vn_open_cred(struct nameidata *ndp, int *flagp, int cmode,
|
|
struct ucred *cred, struct file *fp);
|
|
int vn_pollrecord(struct vnode *vp, struct thread *p, int events);
|
|
int vn_rdwr(enum uio_rw rw, struct vnode *vp, void *base,
|
|
int len, off_t offset, enum uio_seg segflg, int ioflg,
|
|
struct ucred *active_cred, struct ucred *file_cred, int *aresid,
|
|
struct thread *td);
|
|
int vn_rdwr_inchunks(enum uio_rw rw, struct vnode *vp, void *base,
|
|
size_t len, off_t offset, enum uio_seg segflg, int ioflg,
|
|
struct ucred *active_cred, struct ucred *file_cred, size_t *aresid,
|
|
struct thread *td);
|
|
int vn_stat(struct vnode *vp, struct stat *sb, struct ucred *active_cred,
|
|
struct ucred *file_cred, struct thread *td);
|
|
int vn_start_write(struct vnode *vp, struct mount **mpp, int flags);
|
|
int vn_start_secondary_write(struct vnode *vp, struct mount **mpp,
|
|
int flags);
|
|
int vn_write_suspend_wait(struct vnode *vp, struct mount *mp,
|
|
int flags);
|
|
int vn_writechk(struct vnode *vp);
|
|
int vn_extattr_get(struct vnode *vp, int ioflg, int attrnamespace,
|
|
const char *attrname, int *buflen, char *buf, struct thread *td);
|
|
int vn_extattr_set(struct vnode *vp, int ioflg, int attrnamespace,
|
|
const char *attrname, int buflen, char *buf, struct thread *td);
|
|
int vn_extattr_rm(struct vnode *vp, int ioflg, int attrnamespace,
|
|
const char *attrname, struct thread *td);
|
|
int vfs_cache_lookup(struct vop_lookup_args *ap);
|
|
void vfs_timestamp(struct timespec *);
|
|
void vfs_write_resume(struct mount *mp);
|
|
int vfs_write_suspend(struct mount *mp);
|
|
int vop_stdbmap(struct vop_bmap_args *);
|
|
int vop_stdfsync(struct vop_fsync_args *);
|
|
int vop_stdgetwritemount(struct vop_getwritemount_args *);
|
|
int vop_stdgetpages(struct vop_getpages_args *);
|
|
int vop_stdinactive(struct vop_inactive_args *);
|
|
int vop_stdislocked(struct vop_islocked_args *);
|
|
int vop_stdkqfilter(struct vop_kqfilter_args *);
|
|
int vop_stdlock(struct vop_lock1_args *);
|
|
int vop_stdputpages(struct vop_putpages_args *);
|
|
int vop_stdunlock(struct vop_unlock_args *);
|
|
int vop_nopoll(struct vop_poll_args *);
|
|
int vop_stdpathconf(struct vop_pathconf_args *);
|
|
int vop_stdpoll(struct vop_poll_args *);
|
|
int vop_stdvptofh(struct vop_vptofh_args *ap);
|
|
int vop_eopnotsupp(struct vop_generic_args *ap);
|
|
int vop_ebadf(struct vop_generic_args *ap);
|
|
int vop_einval(struct vop_generic_args *ap);
|
|
int vop_enotty(struct vop_generic_args *ap);
|
|
int vop_null(struct vop_generic_args *ap);
|
|
int vop_panic(struct vop_generic_args *ap);
|
|
|
|
/* These are called from within the actual VOPS. */
|
|
void vop_create_post(void *a, int rc);
|
|
void vop_link_post(void *a, int rc);
|
|
void vop_lock_pre(void *a);
|
|
void vop_lock_post(void *a, int rc);
|
|
void vop_lookup_post(void *a, int rc);
|
|
void vop_lookup_pre(void *a);
|
|
void vop_mkdir_post(void *a, int rc);
|
|
void vop_mknod_post(void *a, int rc);
|
|
void vop_remove_post(void *a, int rc);
|
|
void vop_rename_post(void *a, int rc);
|
|
void vop_rename_pre(void *a);
|
|
void vop_rmdir_post(void *a, int rc);
|
|
void vop_setattr_post(void *a, int rc);
|
|
void vop_strategy_pre(void *a);
|
|
void vop_symlink_post(void *a, int rc);
|
|
void vop_unlock_post(void *a, int rc);
|
|
void vop_unlock_pre(void *a);
|
|
|
|
#define VOP_WRITE_PRE(ap) \
|
|
struct vattr va; \
|
|
int error, osize, ooffset, noffset; \
|
|
\
|
|
osize = ooffset = noffset = 0; \
|
|
if (!VN_KNLIST_EMPTY((ap)->a_vp)) { \
|
|
error = VOP_GETATTR((ap)->a_vp, &va, (ap)->a_cred, \
|
|
curthread); \
|
|
if (error) \
|
|
return (error); \
|
|
ooffset = (ap)->a_uio->uio_offset; \
|
|
osize = va.va_size; \
|
|
}
|
|
|
|
#define VOP_WRITE_POST(ap, ret) \
|
|
noffset = (ap)->a_uio->uio_offset; \
|
|
if (noffset > ooffset && !VN_KNLIST_EMPTY((ap)->a_vp)) { \
|
|
VFS_KNOTE_LOCKED((ap)->a_vp, NOTE_WRITE \
|
|
| (noffset > osize ? NOTE_EXTEND : 0)); \
|
|
}
|
|
|
|
#define VOP_LOCK(vp, flags) VOP_LOCK1(vp, flags, __FILE__, __LINE__)
|
|
|
|
|
|
void vput(struct vnode *vp);
|
|
void vrele(struct vnode *vp);
|
|
void vref(struct vnode *vp);
|
|
int vrefcnt(struct vnode *vp);
|
|
void v_addpollinfo(struct vnode *vp);
|
|
|
|
int vnode_create_vobject(struct vnode *vp, off_t size, struct thread *td);
|
|
void vnode_destroy_vobject(struct vnode *vp);
|
|
|
|
extern struct vop_vector fifo_specops;
|
|
extern struct vop_vector dead_vnodeops;
|
|
extern struct vop_vector default_vnodeops;
|
|
|
|
#define VOP_PANIC ((void*)(uintptr_t)vop_panic)
|
|
#define VOP_NULL ((void*)(uintptr_t)vop_null)
|
|
#define VOP_EBADF ((void*)(uintptr_t)vop_ebadf)
|
|
#define VOP_ENOTTY ((void*)(uintptr_t)vop_enotty)
|
|
#define VOP_EINVAL ((void*)(uintptr_t)vop_einval)
|
|
#define VOP_EOPNOTSUPP ((void*)(uintptr_t)vop_eopnotsupp)
|
|
|
|
/* vfs_hash.c */
|
|
typedef int vfs_hash_cmp_t(struct vnode *vp, void *arg);
|
|
|
|
int vfs_hash_get(const struct mount *mp, u_int hash, int flags, struct thread *td, struct vnode **vpp, vfs_hash_cmp_t *fn, void *arg);
|
|
int vfs_hash_insert(struct vnode *vp, u_int hash, int flags, struct thread *td, struct vnode **vpp, vfs_hash_cmp_t *fn, void *arg);
|
|
void vfs_hash_rehash(struct vnode *vp, u_int hash);
|
|
void vfs_hash_remove(struct vnode *vp);
|
|
|
|
int vfs_kqfilter(struct vop_kqfilter_args *);
|
|
void vfs_mark_atime(struct vnode *vp, struct thread *td);
|
|
struct dirent;
|
|
int vfs_read_dirent(struct vop_readdir_args *ap, struct dirent *dp, off_t off);
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* !_SYS_VNODE_H_ */
|