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bef608bd7e
problems. Tor Egge and others have helped with various VM bugs lately, but don't blame him -- blame me!!! pmap.c: 1) Create an object for kernel page table allocations. This fixes a bogus allocation method previously used for such, by grabbing pages from the kernel object, using bogus pindexes. (This was a code cleanup, and perhaps a minor system stability issue.) pmap.c: 2) Pre-set the modify and accessed bits when prudent. This will decrease bus traffic under certain circumstances. vfs_bio.c, vfs_cluster.c: 3) Rather than calculating the beginning virtual byte offset multiple times, stick the offset into the buffer header, so that the calculated offset can be reused. (Long long multiplies are often expensive, and this is a probably unmeasurable performance improvement, and code cleanup.) vfs_bio.c: 4) Handle write recursion more intelligently (but not perfectly) so that it is less likely to cause a system panic, and is also much more robust. vfs_bio.c: 5) getblk incorrectly wrote out blocks that are incorrectly sized. The problem is fixed, and writes blocks out ONLY when B_DELWRI is true. vfs_bio.c: 6) Check that already constituted buffers have fully valid pages. If not, then make sure that the B_CACHE bit is not set. (This was a major source of Sig-11 type problems.) vfs_bio.c: 7) Fix a potential system deadlock due to an incorrectly specified sleep priority while waiting for a buffer write operation. The change that I made opens the system up to serious problems, and we need to examine the issue of process sleep priorities. vfs_cluster.c, vfs_bio.c: 8) Make clustered reads work more correctly (and more completely) when buffers are already constituted, but not fully valid. (This was another system reliability issue.) vfs_subr.c, ffs_inode.c: 9) Create a vtruncbuf function, which is used by filesystems that can truncate files. The vinvalbuf forced a file sync type operation, while vtruncbuf only invalidates the buffers past the new end of file, and also invalidates the appropriate pages. (This was a system reliabiliy and performance issue.) 10) Modify FFS to use vtruncbuf. vm_object.c: 11) Make the object rundown mechanism for OBJT_VNODE type objects work more correctly. Included in that fix, create pager entries for the OBJT_DEAD pager type, so that paging requests that might slip in during race conditions are properly handled. (This was a system reliability issue.) vm_page.c: 12) Make some of the page validation routines be a little less picky about arguments passed to them. Also, support page invalidation change the object generation count so that we handle generation counts a little more robustly. vm_pageout.c: 13) Further reduce pageout daemon activity when the system doesn't need help from it. There should be no additional performance decrease even when the pageout daemon is running. (This was a significant performance issue.) vnode_pager.c: 14) Teach the vnode pager to handle race conditions during vnode deallocations.
548 lines
19 KiB
C
548 lines
19 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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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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* $Id: vnode.h,v 1.68 1998/03/08 09:58:35 julian Exp $
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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/queue.h>
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#include <sys/select.h> /* needed for struct selinfo in vnodes */
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#include <machine/lock.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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/*
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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_PC, VT_LFS, VT_LOFS, VT_FDESC,
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VT_PORTAL, VT_NULL, VT_UMAP, VT_KERNFS, VT_PROCFS, VT_AFS, VT_ISOFS,
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VT_UNION, VT_MSDOSFS, VT_DEVFS, VT_TFS, VT_VFS
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};
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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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LIST_HEAD(buflists, buf);
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typedef int vop_t __P((void *));
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struct namecache;
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/*
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* Reading or writing any of these items requires holding the appropriate lock.
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* v_freelist is locked by the global vnode_free_list simple lock.
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* v_mntvnodes is locked by the global mntvnodes simple lock.
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* v_flag, v_usecount, v_holdcount and v_writecount are
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* locked by the v_interlock simple lock.
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* v_pollinfo is locked by the lock contained inside it.
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*/
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struct vnode {
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u_long v_flag; /* vnode flags (see below) */
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int v_usecount; /* reference count of users */
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int v_writecount; /* reference count of writers */
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int v_holdcnt; /* page & buffer references */
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daddr_t v_lastr; /* last read (read-ahead) */
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u_long v_id; /* capability identifier */
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struct mount *v_mount; /* ptr to vfs we are in */
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vop_t **v_op; /* vnode operations vector */
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TAILQ_ENTRY(vnode) v_freelist; /* vnode freelist */
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LIST_ENTRY(vnode) v_mntvnodes; /* vnodes for mount point */
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struct buflists v_cleanblkhd; /* clean blocklist head */
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struct buflists v_dirtyblkhd; /* dirty blocklist head */
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LIST_ENTRY(vnode) v_synclist; /* vnodes with dirty buffers */
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long v_numoutput; /* num of writes in progress */
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enum vtype v_type; /* vnode type */
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union {
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struct mount *vu_mountedhere;/* ptr to mounted vfs (VDIR) */
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struct socket *vu_socket; /* unix ipc (VSOCK) */
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struct specinfo *vu_specinfo; /* device (VCHR, VBLK) */
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struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */
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} v_un;
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struct nqlease *v_lease; /* Soft reference to lease */
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daddr_t v_lastw; /* last write (write cluster) */
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daddr_t v_cstart; /* start block of cluster */
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daddr_t v_lasta; /* last allocation */
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int v_clen; /* length of current cluster */
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int v_maxio; /* maximum I/O cluster size */
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struct vm_object *v_object; /* Place to store VM object */
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struct simplelock v_interlock; /* lock on usecount and flag */
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struct lock *v_vnlock; /* used for non-locking fs's */
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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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LIST_HEAD(, namecache) v_cache_src; /* Cache entries from us */
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TAILQ_HEAD(, namecache) v_cache_dst; /* Cache entries to us */
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struct vnode *v_dd; /* .. vnode */
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u_long v_ddid; /* .. capability identifier */
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struct {
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struct simplelock 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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} v_pollinfo;
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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_specinfo v_un.vu_specinfo
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#define v_fifoinfo v_un.vu_fifoinfo
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#define VN_POLLEVENT(vp, events) \
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do { \
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if ((vp)->v_pollinfo.vpi_events & (events)) \
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vn_pollevent((vp), (events)); \
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} while (0)
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/*
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* Vnode flags.
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*/
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#define VROOT 0x00001 /* root of its file system */
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#define VTEXT 0x00002 /* vnode is a pure text prototype */
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#define VSYSTEM 0x00004 /* vnode being used by kernel */
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#define VISTTY 0x00008 /* vnode represents a tty */
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#define VXLOCK 0x00100 /* vnode is locked to change underlying type */
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#define VXWANT 0x00200 /* process is waiting for vnode */
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#define VBWAIT 0x00400 /* waiting for output to complete */
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#define VALIASED 0x00800 /* vnode has an alias */
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#define VDIROP 0x01000 /* LFS: vnode is involved in a directory op */
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#define VOBJBUF 0x02000 /* Allocate buffers in VM object */
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#define VNINACT 0x04000 /* LFS: skip ufs_inactive() in lfs_vunref */
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#define VAGE 0x08000 /* Insert vnode at head of free list */
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#define VOLOCK 0x10000 /* vnode is locked waiting for an object */
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#define VOWANT 0x20000 /* a process is waiting for VOLOCK */
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#define VDOOMED 0x40000 /* This vnode is being recycled */
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#define VFREE 0x80000 /* This vnode is on the freelist */
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#define VTBFREE 0x100000 /* This vnode is on the to-be-freelist */
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#define VONWORKLST 0x200000 /* On syncer work-list */
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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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long va_fsid; /* file system id (dev for now) */
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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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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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/*
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* Flags for ioflag.
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*/
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#define IO_UNIT 0x01 /* do I/O as atomic unit */
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#define IO_APPEND 0x02 /* append write to end */
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#define IO_SYNC 0x04 /* do I/O synchronously */
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#define IO_NODELOCKED 0x08 /* underlying node already locked */
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#define IO_NDELAY 0x10 /* FNDELAY flag set in file table */
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#define IO_VMIO 0x20 /* data already in VMIO space */
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#define IO_INVAL 0x40 /* invalidate after I/O */
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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 VSUID 04000 /* set user id on execution */
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#define VSGID 02000 /* set group id on execution */
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#define VSVTX 01000 /* save swapped text even after use */
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#define VREAD 00400 /* read, write, execute permissions */
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#define VWRITE 00200
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#define VEXEC 00100
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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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#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_SAVEMETA 0x0002 /* vinvalbuf: leave indirect blocks */
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#define REVOKEALL 0x0001 /* vop_revoke: revoke all aliases */
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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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#ifdef VFS_LKM
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#define VNODEOP_SET(f) DATA_SET(MODVNOPS,f)
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#else
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#define VNODEOP_SET(f) DATA_SET(vfs_opv_descs_,f)
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#endif
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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 desiredvnodes; /* number of vnodes desired */
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extern time_t syncdelay; /* time to delay syncing vnodes */
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extern int rushjob; /* # of slots filesys_syncer should run ASAP */
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extern struct vm_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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extern int vfs_ioopt;
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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) __P((int deltat));
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#define VSHOULDFREE(vp) \
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(!((vp)->v_flag & (VFREE|VDOOMED)) && \
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!(vp)->v_holdcnt && !(vp)->v_usecount && \
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(!(vp)->v_object || \
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!((vp)->v_object->ref_count || (vp)->v_object->resident_page_count)))
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#define VSHOULDBUSY(vp) \
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(((vp)->v_flag & (VFREE|VTBFREE)) && \
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((vp)->v_holdcnt || (vp)->v_usecount))
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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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* 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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int vdesc_offset; /* offset in vector--first for speed */
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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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/*
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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
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* they are useful to (for example) transport layers.
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* Nameidata is useful because it has a cred in it.
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*/
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int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */
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int vdesc_vpp_offset; /* return vpp location */
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int vdesc_cred_offset; /* cred location, if any */
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int vdesc_proc_offset; /* proc location, if any */
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int vdesc_componentname_offset; /* if any */
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/*
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* Finally, we've got a list of private data (about each operation)
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* for each transport layer. (Support to manage this list is not
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* yet part of BSD.)
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*/
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caddr_t *vdesc_transports;
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};
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#ifdef KERNEL
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/*
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* A list of all the operation descs.
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*/
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extern struct vnodeop_desc *vnodeop_descs[];
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/*
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* Interlock for scanning list of vnodes attached to a mountpoint
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*/
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extern struct simplelock mntvnode_slock;
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/*
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* This macro is very helpful in defining those offsets in the vdesc struct.
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*
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* This is stolen from X11R4. I ignored all the fancy stuff for
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* Crays, so if you decide to port this to such a serious machine,
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* you might want to consult Intrinsic.h's XtOffset{,Of,To}.
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*/
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#define VOPARG_OFFSET(p_type,field) \
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((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
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#define VOPARG_OFFSETOF(s_type,field) \
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VOPARG_OFFSET(s_type*,field)
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#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \
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((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET)))
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/*
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* This structure is used to configure the new vnodeops vector.
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*/
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struct vnodeopv_entry_desc {
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struct vnodeop_desc *opve_op; /* which operation this is */
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vop_t *opve_impl; /* code implementing this operation */
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};
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struct vnodeopv_desc {
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/* ptr to the ptr to the vector where op should go */
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vop_t ***opv_desc_vector_p;
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struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */
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};
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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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#ifdef DEBUG_VFS_LOCKS
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/*
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* Macros to aid in tracing VFS locking problems. Not totally
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* reliable since if the process sleeps between changing the lock
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* state and checking it with the assert, some other process could
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* change the state. They are good enough for debugging a single
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* filesystem using a single-threaded test. I find that 'cvs co src'
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* is a pretty good test.
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*/
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/*
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* [dfr] Kludge until I get around to fixing all the vfs locking.
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*/
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#define IS_LOCKING_VFS(vp) ((vp)->v_tag == VT_UFS \
|
|
|| (vp)->v_tag == VT_MFS \
|
|
|| (vp)->v_tag == VT_NFS \
|
|
|| (vp)->v_tag == VT_LFS \
|
|
|| (vp)->v_tag == VT_ISOFS \
|
|
|| (vp)->v_tag == VT_MSDOSFS \
|
|
|| (vp)->v_tag == VT_DEVFS)
|
|
|
|
#define ASSERT_VOP_LOCKED(vp, str) \
|
|
if ((vp) && IS_LOCKING_VFS(vp) && !VOP_ISLOCKED(vp)) { \
|
|
panic("%s: %x is not locked but should be", str, vp); \
|
|
}
|
|
|
|
#define ASSERT_VOP_UNLOCKED(vp, str) \
|
|
if ((vp) && IS_LOCKING_VFS(vp) && VOP_ISLOCKED(vp)) { \
|
|
panic("%s: %x is locked but shouldn't be", str, vp); \
|
|
}
|
|
|
|
#else
|
|
|
|
#define ASSERT_VOP_LOCKED(vp, str)
|
|
#define ASSERT_VOP_UNLOCKED(vp, str)
|
|
|
|
#endif
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
#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)
|
|
|
|
/*
|
|
* 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 proc;
|
|
struct stat;
|
|
struct ucred;
|
|
struct uio;
|
|
struct vattr;
|
|
struct vnode;
|
|
struct vop_bwrite_args;
|
|
|
|
extern int (*lease_check_hook) __P((struct vop_lease_args *));
|
|
|
|
int bdevvp __P((dev_t dev, struct vnode **vpp));
|
|
/* cache_* may belong in namei.h. */
|
|
void cache_enter __P((struct vnode *dvp, struct vnode *vp,
|
|
struct componentname *cnp));
|
|
int cache_lookup __P((struct vnode *dvp, struct vnode **vpp,
|
|
struct componentname *cnp));
|
|
void cache_purge __P((struct vnode *vp));
|
|
void cache_purgevfs __P((struct mount *mp));
|
|
void cvtstat __P((struct stat *st, struct ostat *ost));
|
|
int getnewvnode __P((enum vtagtype tag,
|
|
struct mount *mp, vop_t **vops, struct vnode **vpp));
|
|
int lease_check __P((struct vop_lease_args *ap));
|
|
void vattr_null __P((struct vattr *vap));
|
|
int vcount __P((struct vnode *vp));
|
|
void vdrop __P((struct vnode *));
|
|
int vfinddev __P((dev_t dev, enum vtype type, struct vnode **vpp));
|
|
void vfs_opv_init __P((struct vnodeopv_desc **them));
|
|
int vflush __P((struct mount *mp, struct vnode *skipvp, int flags));
|
|
int vget __P((struct vnode *vp, int lockflag, struct proc *p));
|
|
void vgone __P((struct vnode *vp));
|
|
void vhold __P((struct vnode *));
|
|
int vinvalbuf __P((struct vnode *vp, int save, struct ucred *cred,
|
|
|
|
struct proc *p, int slpflag, int slptimeo));
|
|
int vtruncbuf __P((struct vnode *vp, struct ucred *cred, struct proc *p,
|
|
off_t length, int blksize));
|
|
void vprint __P((char *label, struct vnode *vp));
|
|
int vrecycle __P((struct vnode *vp, struct simplelock *inter_lkp,
|
|
struct proc *p));
|
|
int vn_close __P((struct vnode *vp,
|
|
int flags, struct ucred *cred, struct proc *p));
|
|
int vn_lock __P((struct vnode *vp, int flags, struct proc *p));
|
|
int vn_open __P((struct nameidata *ndp, int fmode, int cmode));
|
|
void vn_pollevent __P((struct vnode *vp, int events));
|
|
void vn_pollgone __P((struct vnode *vp));
|
|
int vn_pollrecord __P((struct vnode *vp, struct proc *p, int events));
|
|
int vn_rdwr __P((enum uio_rw rw, struct vnode *vp, caddr_t base,
|
|
int len, off_t offset, enum uio_seg segflg, int ioflg,
|
|
struct ucred *cred, int *aresid, struct proc *p));
|
|
int vn_stat __P((struct vnode *vp, struct stat *sb, struct proc *p));
|
|
void vn_syncer_add_to_worklist __P((struct vnode *vp, int delay));
|
|
int vfs_cache_lookup __P((struct vop_lookup_args *ap));
|
|
int vfs_object_create __P((struct vnode *vp, struct proc *p,
|
|
struct ucred *cred, int waslocked));
|
|
int vn_writechk __P((struct vnode *vp));
|
|
int vop_stdbwrite __P((struct vop_bwrite_args *ap));
|
|
int vop_stdislocked __P((struct vop_islocked_args *));
|
|
int vop_stdlock __P((struct vop_lock_args *));
|
|
int vop_stdunlock __P((struct vop_unlock_args *));
|
|
int vop_noislocked __P((struct vop_islocked_args *));
|
|
int vop_nolock __P((struct vop_lock_args *));
|
|
int vop_nopoll __P((struct vop_poll_args *));
|
|
int vop_nounlock __P((struct vop_unlock_args *));
|
|
int vop_stdpathconf __P((struct vop_pathconf_args *));
|
|
int vop_stdpoll __P((struct vop_poll_args *));
|
|
int vop_revoke __P((struct vop_revoke_args *));
|
|
int vop_sharedlock __P((struct vop_lock_args *));
|
|
int vop_eopnotsupp __P((struct vop_generic_args *ap));
|
|
int vop_ebadf __P((struct vop_generic_args *ap));
|
|
int vop_einval __P((struct vop_generic_args *ap));
|
|
int vop_enotty __P((struct vop_generic_args *ap));
|
|
int vop_defaultop __P((struct vop_generic_args *ap));
|
|
int vop_null __P((struct vop_generic_args *ap));
|
|
|
|
struct vnode *
|
|
checkalias __P((struct vnode *vp, dev_t nvp_rdev, struct mount *mp));
|
|
void vput __P((struct vnode *vp));
|
|
void vrele __P((struct vnode *vp));
|
|
void vref __P((struct vnode *vp));
|
|
void vbusy __P((struct vnode *vp));
|
|
|
|
extern vop_t **default_vnodeop_p;
|
|
|
|
extern TAILQ_HEAD(tobefreelist, vnode)
|
|
vnode_tobefree_list; /* vnode free list */
|
|
|
|
#endif /* KERNEL */
|
|
|
|
#endif /* !_SYS_VNODE_H_ */
|