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sys/param.h was manually adjusted to not define __NetBSD_Version__ since it will be defined by the compiler.
679 lines
23 KiB
C
Vendored
679 lines
23 KiB
C
Vendored
/* $NetBSD: vnode.h,v 1.304 2022/10/26 23:40:30 riastradh Exp $ */
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/*-
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* Copyright (c) 2008, 2020 The NetBSD Foundation, Inc.
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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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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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* 3. 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 8.17 (Berkeley) 5/20/95
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*/
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#ifndef _SYS_VNODE_H_
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#define _SYS_VNODE_H_
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#include <sys/event.h>
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#include <sys/queue.h>
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#include <sys/condvar.h>
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#include <sys/rwlock.h>
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#include <sys/mutex.h>
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#include <sys/time.h>
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#include <sys/acl.h>
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/* XXX: clean up includes later */
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#include <uvm/uvm_param.h> /* XXX */
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#if defined(_KERNEL) || defined(_KMEMUSER)
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#include <uvm/uvm_pglist.h> /* XXX */
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#include <uvm/uvm_object.h> /* XXX */
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#include <uvm/uvm_extern.h> /* XXX */
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struct uvm_ractx;
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#endif
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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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#define VNODE_TYPES \
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"VNON", "VREG", "VDIR", "VBLK", "VCHR", "VLNK", "VSOCK", "VFIFO", "VBAD"
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/*
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* Vnode tag types.
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* These are for the benefit of external programs only (e.g., pstat)
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* and should NEVER be inspected by the kernel.
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*/
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enum vtagtype {
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VT_NON, VT_UFS, VT_NFS, VT_MFS, VT_MSDOSFS, VT_LFS, VT_LOFS,
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VT_FDESC, VT_PORTAL, VT_NULL, VT_UMAP, VT_KERNFS, VT_PROCFS,
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VT_AFS, VT_ISOFS, VT_UNION, VT_ADOSFS, VT_EXT2FS, VT_CODA,
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VT_FILECORE, VT_NTFS, VT_VFS, VT_OVERLAY, VT_SMBFS, VT_PTYFS,
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VT_TMPFS, VT_UDF, VT_SYSVBFS, VT_PUFFS, VT_HFS, VT_EFS, VT_ZFS,
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VT_RUMP, VT_NILFS, VT_V7FS, VT_CHFS, VT_AUTOFS
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};
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#define VNODE_TAGS \
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"VT_NON", "VT_UFS", "VT_NFS", "VT_MFS", "VT_MSDOSFS", "VT_LFS", "VT_LOFS", \
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"VT_FDESC", "VT_PORTAL", "VT_NULL", "VT_UMAP", "VT_KERNFS", "VT_PROCFS", \
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"VT_AFS", "VT_ISOFS", "VT_UNION", "VT_ADOSFS", "VT_EXT2FS", "VT_CODA", \
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"VT_FILECORE", "VT_NTFS", "VT_VFS", "VT_OVERLAY", "VT_SMBFS", "VT_PTYFS", \
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"VT_TMPFS", "VT_UDF", "VT_SYSVBFS", "VT_PUFFS", "VT_HFS", "VT_EFS", \
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"VT_ZFS", "VT_RUMP", "VT_NILFS", "VT_V7FS", "VT_CHFS", "VT_AUTOFS"
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#if defined(_KERNEL) || defined(_KMEMUSER)
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struct vnode;
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struct buf;
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LIST_HEAD(buflists, buf);
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/*
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* Reading or writing any of these items requires holding the appropriate
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* lock. Field markings and the corresponding locks:
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*
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* - stable, reference to the vnode is required
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* b bufcache_lock
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* e exec_lock
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* f vnode_free_list_lock, or vrele_lock for vrele_list
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* i v_interlock
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* i+b v_interlock + bufcache_lock to modify, either to inspect
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* i+u v_interlock + v_uobj.vmobjlock to modify, either to inspect
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* k locked by underlying filesystem (maybe kernel_lock)
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* u v_uobj.vmobjlock
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* v vnode lock
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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.
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*/
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struct vnode {
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/*
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* VM system related items.
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*/
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struct uvm_object v_uobj; /* u the VM object */
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voff_t v_size; /* i+u size of file */
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voff_t v_writesize; /* i+u new size after write */
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/*
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* Unstable items get their own cache line.
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* On _LP64 this fills the space nicely.
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*/
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kcondvar_t v_cv /* i synchronization */
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__aligned(COHERENCY_UNIT);
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int v_iflag; /* i+u VI_* flags */
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int v_uflag; /* k VU_* flags */
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int v_usecount; /* i reference count */
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int v_numoutput; /* i # of pending writes */
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int v_writecount; /* i ref count of writers */
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int v_holdcnt; /* i page & buffer refs */
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struct buflists v_cleanblkhd; /* i+b clean blocklist head */
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struct buflists v_dirtyblkhd; /* i+b dirty blocklist head */
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/*
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* The remaining items are largely stable.
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*/
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int v_vflag /* v VV_* flags */
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__aligned(COHERENCY_UNIT);
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kmutex_t *v_interlock; /* - vnode interlock */
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struct mount *v_mount; /* v ptr to vfs we are in */
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int (**v_op)(void *); /* : vnode operations vector */
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union {
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struct mount *vu_mountedhere;/* v ptr to vfs (VDIR) */
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struct socket *vu_socket; /* v unix ipc (VSOCK) */
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struct specnode *vu_specnode; /* v device (VCHR, VBLK) */
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struct fifoinfo *vu_fifoinfo; /* v fifo (VFIFO) */
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struct uvm_ractx *vu_ractx; /* u read-ahead ctx (VREG) */
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} v_un;
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enum vtype v_type; /* - vnode type */
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enum vtagtype v_tag; /* - type of underlying data */
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void *v_data; /* - private data for fs */
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struct vnode_klist *v_klist; /* i kevent / knote info */
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void *v_segvguard; /* e for PAX_SEGVGUARD */
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};
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#define v_mountedhere v_un.vu_mountedhere
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#define v_socket v_un.vu_socket
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#define v_specnode v_un.vu_specnode
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#define v_fifoinfo v_un.vu_fifoinfo
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#define v_ractx v_un.vu_ractx
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typedef struct vnode vnode_t;
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/*
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* Structure that encompasses the kevent state for a vnode. This is
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* carved out as a separate structure because some vnodes may share
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* this state with one another.
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*
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* N.B. if two vnodes share a vnode_klist, then they must also share
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* v_interlock.
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*/
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struct vnode_klist {
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struct klist vk_klist; /* i notes attached to vnode */
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long vk_interest; /* i what the notes are interested in */
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};
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#endif
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/*
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* Vnode flags. The first set are locked by vnode lock or are stable.
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* VSYSTEM is only used to skip vflush()ing quota files. VISTTY is used
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* when reading dead vnodes.
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*/
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#define VV_ROOT 0x00000001 /* root of its file system */
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#define VV_SYSTEM 0x00000002 /* vnode being used by kernel */
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#define VV_ISTTY 0x00000004 /* vnode represents a tty */
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#define VV_MAPPED 0x00000008 /* vnode might have user mappings */
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#define VV_MPSAFE 0x00000010 /* file system code is MP safe */
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/*
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* The second set are locked by vp->v_interlock. VI_TEXT and VI_EXECMAP are
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* typically updated with vp->v_uobj.vmobjlock also held as the VM system
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* uses them for accounting purposes.
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*/
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#define VI_TEXT 0x00000100 /* vnode is a pure text prototype */
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#define VI_EXECMAP 0x00000200 /* might have PROT_EXEC mappings */
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#define VI_WRMAP 0x00000400 /* might have PROT_WRITE u. mappings */
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#define VI_PAGES 0x00000800 /* UVM object has >0 pages */
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#define VI_ONWORKLST 0x00004000 /* On syncer work-list */
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#define VI_DEADCHECK 0x00008000 /* UVM: need to call vdead_check() */
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/*
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* The third set are locked by the underlying file system.
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*/
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#define VU_DIROP 0x01000000 /* LFS: involved in a directory op */
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#define VNODE_FLAGBITS \
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"\20\1ROOT\2SYSTEM\3ISTTY\4MAPPED\5MPSAFE\11TEXT\12EXECMAP" \
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"\13WRMAP\14PAGES\17ONWORKLST\20DEADCHECK\31DIROP"
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#define VSIZENOTSET ((voff_t)-1)
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/*
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* vnode lock flags
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*/
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#define LK_NONE 0x00000000 /* no lock - for VOP_ISLOCKED() */
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#define LK_SHARED 0x00000001 /* shared lock */
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#define LK_EXCLUSIVE 0x00000002 /* exclusive lock */
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#define LK_UPGRADE 0x00000010 /* upgrade shared -> exclusive */
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#define LK_DOWNGRADE 0x00000020 /* downgrade exclusive -> shared */
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#define LK_NOWAIT 0x00000100 /* do not sleep to await lock */
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#define LK_RETRY 0x00000200 /* vn_lock: retry until locked */
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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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mode_t va_mode; /* files access mode and type */
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nlink_t 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; /* file system id (dev for now) */
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ino_t 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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unsigned 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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#ifdef _KERNEL
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/*
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* Flags for ioflag.
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*/
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#define IO_UNIT 0x00010 /* do I/O as atomic unit */
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#define IO_APPEND 0x00020 /* append write to end */
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#define IO_SYNC (0x40|IO_DSYNC) /* sync I/O file integrity completion */
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#define IO_NODELOCKED 0x00080 /* underlying node already locked */
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#define IO_NDELAY 0x00100 /* FNDELAY flag set in file table */
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#define IO_DSYNC 0x00200 /* sync I/O data integrity completion */
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#define IO_ALTSEMANTICS 0x00400 /* use alternate i/o semantics */
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#define IO_NORMAL 0x00800 /* operate on regular data */
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#define IO_EXT 0x01000 /* operate on extended attributes */
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#define IO_DIRECT 0x02000 /* direct I/O hint */
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#define IO_JOURNALLOCKED 0x04000 /* journal is already locked */
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#define IO_ADV_MASK 0x00003 /* access pattern hint */
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#define IO_ADV_SHIFT 0
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#define IO_ADV_ENCODE(adv) (((adv) << IO_ADV_SHIFT) & IO_ADV_MASK)
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#define IO_ADV_DECODE(ioflag) (((ioflag) & IO_ADV_MASK) >> IO_ADV_SHIFT)
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/*
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* Flags for accmode_t.
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*/
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#define VEXEC 000000000100 /* execute/search permission */
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#define VWRITE 000000000200 /* write permission */
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#define VREAD 000000000400 /* read permission */
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#define VADMIN 000000010000 /* being the file owner */
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#define VAPPEND 000000040000 /* permission to write/append */
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/*
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* VEXPLICIT_DENY makes VOP_ACCESSX(9) return EPERM or EACCES only
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* if permission was denied explicitly, by a "deny" rule in NFSv4 ACL,
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* and 0 otherwise. This never happens with ordinary unix access rights
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* or POSIX.1e ACLs. Obviously, VEXPLICIT_DENY must be OR-ed with
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* some other V* constant.
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*/
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#define VEXPLICIT_DENY 000000100000
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#define VREAD_NAMED_ATTRS 000000200000 /* not used */
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#define VWRITE_NAMED_ATTRS 000000400000 /* not used */
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#define VDELETE_CHILD 000001000000
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#define VREAD_ATTRIBUTES 000002000000 /* permission to stat(2) */
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#define VWRITE_ATTRIBUTES 000004000000 /* change {m,c,a}time */
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#define VDELETE 000010000000
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#define VREAD_ACL 000020000000 /* read ACL and file mode */
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#define VWRITE_ACL 000040000000 /* change ACL and/or file mode */
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#define VWRITE_OWNER 000100000000 /* change file owner */
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#define VSYNCHRONIZE 000200000000 /* not used */
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#define VCREAT 000400000000 /* creating new file */
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#define VVERIFY 001000000000 /* verification required */
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#define __VNODE_PERM_BITS \
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"\10" \
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"\07VEXEC" \
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"\10VWRITE" \
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"\11VREAD" \
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"\15VADMIN" \
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"\17VAPPEND" \
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"\20VEXPLICIT_DENY" \
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"\21VREAD_NAMED_ATTRS" \
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"\22VWRITE_NAMED_ATTRS" \
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"\23VDELETE_CHILD" \
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"\24VREAD_ATTRIBUTES" \
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"\25VWRITE_ATTRIBUTES" \
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"\26VDELETE" \
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"\27VREAD_ACL" \
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"\30VWRITE_ACL" \
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"\31VWRITE_OWNER" \
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"\32VSYNCHRONIZE" \
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"\33VCREAT" \
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"\34VVERIFY"
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/*
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* Permissions that were traditionally granted only to the file owner.
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*/
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#define VADMIN_PERMS (VADMIN | VWRITE_ATTRIBUTES | VWRITE_ACL | \
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VWRITE_OWNER)
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/*
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* Permissions that were traditionally granted to everyone.
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*/
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#define VSTAT_PERMS (VREAD_ATTRIBUTES | VREAD_ACL)
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/*
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* Permissions that allow to change the state of the file in any way.
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*/
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#define VMODIFY_PERMS (VWRITE | VAPPEND | VADMIN_PERMS | VDELETE_CHILD | \
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VDELETE)
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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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#define VNOVALSIZE ((u_quad_t)-1)
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#define VNOVALFLAGS ((u_long)-1)
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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 const enum vtype iftovt_tab[];
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extern const 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 closeure */
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#define WRITECLOSE 0x0004 /* vflush: only close writable files */
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#define V_SAVE 0x0001 /* vinvalbuf: sync file first */
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/*
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* Flags to various vnode operations.
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*/
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#define REVOKEALL 0x0001 /* revoke: revoke all aliases */
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#define FSYNC_WAIT 0x0001 /* fsync: wait for completion */
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#define FSYNC_DATAONLY 0x0002 /* fsync: hint: sync file data only */
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#define FSYNC_RECLAIM 0x0004 /* fsync: hint: vnode is being reclaimed */
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#define FSYNC_LAZY 0x0008 /* fsync: lazy sync (trickle) */
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#define FSYNC_NOLOG 0x0010 /* fsync: do not flush the log */
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#define FSYNC_CACHE 0x0100 /* fsync: flush disk caches too */
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#define UPDATE_WAIT 0x0001 /* update: wait for completion */
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#define UPDATE_DIROP 0x0002 /* update: hint to fs to wait or not */
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#define UPDATE_CLOSE 0x0004 /* update: clean up on close */
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#define VDEAD_NOWAIT 0x0001 /* vdead_check: do not sleep */
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void holdrelel(struct vnode *);
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void holdrele(struct vnode *);
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void vholdl(struct vnode *);
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void vhold(struct vnode *);
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|
void vref(struct vnode *);
|
|
|
|
#define NULLVP ((struct vnode *)NULL)
|
|
|
|
/*
|
|
* Macro to determine kevent interest on a vnode.
|
|
*/
|
|
#define _VN_KEVENT_INTEREST(vp, n) \
|
|
(((vp)->v_klist->vk_interest & (n)) != 0)
|
|
|
|
static inline bool
|
|
VN_KEVENT_INTEREST(struct vnode *vp, long hint)
|
|
{
|
|
mutex_enter(vp->v_interlock);
|
|
bool rv = _VN_KEVENT_INTEREST(vp, hint);
|
|
mutex_exit(vp->v_interlock);
|
|
return rv;
|
|
}
|
|
|
|
static inline void
|
|
VN_KNOTE(struct vnode *vp, long hint)
|
|
{
|
|
mutex_enter(vp->v_interlock);
|
|
if (__predict_false(_VN_KEVENT_INTEREST(vp, hint))) {
|
|
knote(&vp->v_klist->vk_klist, hint);
|
|
}
|
|
mutex_exit(vp->v_interlock);
|
|
}
|
|
|
|
void vn_knote_attach(struct vnode *, struct knote *);
|
|
void vn_knote_detach(struct vnode *, struct knote *);
|
|
|
|
/*
|
|
* Global vnode data.
|
|
*/
|
|
extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
|
|
extern int desiredvnodes; /* number of vnodes desired */
|
|
extern unsigned int numvnodes; /* current number of vnodes */
|
|
|
|
#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_WILLPUT 0x00000101
|
|
#define VDESC_VP1_WILLPUT 0x00000202
|
|
#define VDESC_VP2_WILLPUT 0x00000404
|
|
#define VDESC_VP3_WILLPUT 0x00000808
|
|
|
|
/*
|
|
* 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 */
|
|
};
|
|
|
|
#ifdef _KERNEL
|
|
|
|
extern const struct vnodeop_desc * const vfs_op_descs[];
|
|
|
|
/*
|
|
* Union filesystem hook for vn_readdir().
|
|
*/
|
|
extern int (*vn_union_readdir_hook) (struct vnode **, struct file *, struct lwp *);
|
|
|
|
/*
|
|
* Macros for offsets in the vdesc struct.
|
|
*/
|
|
#define VOPARG_OFFSETOF(type, member) offsetof(type, member)
|
|
#define VOPARG_OFFSETTO(type,offset,sp) ((type)(((char *)(sp)) + (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 pathbuf;
|
|
struct proc;
|
|
struct stat;
|
|
struct uio;
|
|
struct vattr;
|
|
struct vnode;
|
|
|
|
/* see vnode(9) */
|
|
void vfs_vnode_sysinit(void);
|
|
int bdevvp(dev_t, struct vnode **);
|
|
int cdevvp(dev_t, struct vnode **);
|
|
void vattr_null(struct vattr *);
|
|
void vdevgone(int, int, int, enum vtype);
|
|
int vfinddev(dev_t, enum vtype, struct vnode **);
|
|
int vflush(struct mount *, struct vnode *, int);
|
|
int vflushbuf(struct vnode *, int);
|
|
void vgone(struct vnode *);
|
|
int vinvalbuf(struct vnode *, int, kauth_cred_t, struct lwp *, bool, int);
|
|
void vprint(const char *, struct vnode *);
|
|
void vput(struct vnode *);
|
|
bool vrecycle(struct vnode *);
|
|
void vrele(struct vnode *);
|
|
void vrele_async(struct vnode *);
|
|
void vrele_flush(struct mount *);
|
|
int vtruncbuf(struct vnode *, daddr_t, bool, int);
|
|
void vwakeup(struct buf *);
|
|
int vdead_check(struct vnode *, int);
|
|
void vrevoke(struct vnode *);
|
|
void vremfree(struct vnode *);
|
|
void vshareilock(struct vnode *, struct vnode *);
|
|
void vshareklist(struct vnode *, struct vnode *);
|
|
int vrefcnt(struct vnode *);
|
|
int vcache_get(struct mount *, const void *, size_t, struct vnode **);
|
|
int vcache_new(struct mount *, struct vnode *,
|
|
struct vattr *, kauth_cred_t, void *, struct vnode **);
|
|
int vcache_rekey_enter(struct mount *, struct vnode *,
|
|
const void *, size_t, const void *, size_t);
|
|
void vcache_rekey_exit(struct mount *, struct vnode *,
|
|
const void *, size_t, const void *, size_t);
|
|
|
|
/* 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 vnode *, struct pathbuf *, int, int, int,
|
|
struct vnode **, bool *, 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, unsigned int, int *,
|
|
struct lwp *, off_t **, int *);
|
|
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 *);
|
|
int vn_fifo_bypass(void *);
|
|
int vn_bdev_open(dev_t, struct vnode **, struct lwp *);
|
|
int vn_bdev_openpath(struct pathbuf *pb, struct vnode **, struct lwp *);
|
|
|
|
|
|
/* initialise global vnode management */
|
|
void vntblinit(void);
|
|
|
|
/* misc stuff */
|
|
void sched_sync(void *);
|
|
void vn_syncer_add_to_worklist(struct vnode *, int);
|
|
void vn_syncer_remove_from_worklist(struct vnode *);
|
|
int dorevoke(struct vnode *, kauth_cred_t);
|
|
int rawdev_mounted(struct vnode *, struct vnode **);
|
|
uint8_t vtype2dt(enum vtype);
|
|
|
|
/* see vfssubr(9) */
|
|
int vfs_unixify_accmode(accmode_t *);
|
|
void vfs_getnewfsid(struct mount *);
|
|
void vfs_timestamp(struct timespec *);
|
|
#if defined(DDB) || defined(DEBUGPRINT)
|
|
void vfs_vnode_print(struct vnode *, int, void (*)(const char *, ...)
|
|
__printflike(1, 2));
|
|
void vfs_vnode_lock_print(void *, int, void (*)(const char *, ...)
|
|
__printflike(1, 2));
|
|
void vfs_mount_print(struct mount *, int, void (*)(const char *, ...)
|
|
__printflike(1, 2));
|
|
void vfs_mount_print_all(int, void (*)(const char *, ...)
|
|
__printflike(1, 2));
|
|
#endif /* DDB */
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* !_SYS_VNODE_H_ */ |