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Diffstat (limited to 'sys/kern/vfs_subr.c')
-rw-r--r--sys/kern/vfs_subr.c60
1 files changed, 48 insertions, 12 deletions
diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c
index e0d9d1201431..024c5679000b 100644
--- a/sys/kern/vfs_subr.c
+++ b/sys/kern/vfs_subr.c
@@ -1,4 +1,11 @@
/*
+ * Copyright (c) UNIX System Laboratories, Inc. All or some portions
+ * of this file are derived from material licensed to the
+ * University of California by American Telephone and Telegraph Co.
+ * or UNIX System Laboratories, Inc. and are reproduced herein with
+ * the permission of UNIX System Laboratories, Inc.
+ */
+/*
* Copyright (c) 1989 The Regents of the University of California.
* All rights reserved.
*
@@ -31,7 +38,7 @@
* SUCH DAMAGE.
*
* from: @(#)vfs_subr.c 7.60 (Berkeley) 6/21/91
- * $Id: vfs_subr.c,v 1.4 1993/10/18 14:22:16 davidg Exp $
+ * $Id: vfs_subr.c,v 1.7.2.2 1994/05/04 07:55:00 rgrimes Exp $
*/
/*
@@ -39,6 +46,7 @@
*/
#include "param.h"
+#include "systm.h"
#include "proc.h"
#include "mount.h"
#include "time.h"
@@ -50,6 +58,10 @@
#include "errno.h"
#include "malloc.h"
+static void insmntque(struct vnode *, struct mount *);
+
+struct vnode *speclisth[SPECHSZ]; /* device special file vnode hash table */
+
/*
* Remove a mount point from the list of mounted filesystems.
* Unmount of the root is illegal.
@@ -71,13 +83,14 @@ vfs_remove(mp)
* Lock a filesystem.
* Used to prevent access to it while mounting and unmounting.
*/
+int
vfs_lock(mp)
register struct mount *mp;
{
while(mp->mnt_flag & MNT_MLOCK) {
mp->mnt_flag |= MNT_MWAIT;
- sleep((caddr_t)mp, PVFS);
+ tsleep((caddr_t)mp, PVFS, "vfslock", 0);
}
mp->mnt_flag |= MNT_MLOCK;
return (0);
@@ -105,13 +118,14 @@ vfs_unlock(mp)
* Mark a mount point as busy.
* Used to synchronize access and to delay unmounting.
*/
+int
vfs_busy(mp)
register struct mount *mp;
{
while(mp->mnt_flag & MNT_MPBUSY) {
mp->mnt_flag |= MNT_MPWANT;
- sleep((caddr_t)&mp->mnt_flag, PVFS);
+ tsleep((caddr_t)&mp->mnt_flag, PVFS, "vfsbusy", 0);
}
if (mp->mnt_flag & MNT_UNMOUNT)
return (1);
@@ -123,6 +137,7 @@ vfs_busy(mp)
* Free a busy filesystem.
* Panic if filesystem is not busy.
*/
+void
vfs_unbusy(mp)
register struct mount *mp;
{
@@ -179,13 +194,13 @@ void vattr_null(vap)
*/
struct vnode *vfreeh, **vfreet;
extern struct vnodeops dead_vnodeops, spec_vnodeops;
-extern void vclean();
long numvnodes;
struct vattr va_null;
/*
* Initialize the vnode structures and initialize each file system type.
*/
+void
vfsinit()
{
struct vfsops **vfsp;
@@ -208,6 +223,7 @@ vfsinit()
/*
* Return the next vnode from the free list.
*/
+int
getnewvnode(tag, mp, vops, vpp)
enum vtagtype tag;
struct mount *mp;
@@ -255,6 +271,7 @@ getnewvnode(tag, mp, vops, vpp)
/*
* Move a vnode from one mount queue to another.
*/
+static void
insmntque(vp, mp)
register struct vnode *vp;
register struct mount *mp;
@@ -289,6 +306,7 @@ insmntque(vp, mp)
* Make sure all write-behind blocks associated
* with mount point are flushed out (from sync).
*/
+void
mntflushbuf(mountp, flags)
struct mount *mountp;
int flags;
@@ -313,6 +331,7 @@ loop:
/*
* Flush all dirty buffers associated with a vnode.
*/
+void
vflushbuf(vp, flags)
register struct vnode *vp;
int flags;
@@ -350,7 +369,7 @@ loop:
s = splbio();
while (vp->v_numoutput) {
vp->v_flag |= VBWAIT;
- sleep((caddr_t)&vp->v_numoutput, PRIBIO + 1);
+ tsleep((caddr_t)&vp->v_numoutput, PRIBIO + 1, "vflushbf", 0);
}
splx(s);
if (vp->v_dirtyblkhd) {
@@ -362,6 +381,7 @@ loop:
/*
* Update outstanding I/O count and do wakeup if requested.
*/
+void
vwakeup(bp)
register struct buf *bp;
{
@@ -388,6 +408,7 @@ vwakeup(bp)
* filesystem there will be no dirty buffers when we are done. Binval
* returns the count of dirty buffers when it is finished.
*/
+int
mntinvalbuf(mountp)
struct mount *mountp;
{
@@ -412,6 +433,7 @@ loop:
* Flush out and invalidate all buffers associated with a vnode.
* Called with the underlying object locked.
*/
+int
vinvalbuf(vp, save)
register struct vnode *vp;
int save;
@@ -432,7 +454,7 @@ vinvalbuf(vp, save)
s = splbio();
if (bp->b_flags & B_BUSY) {
bp->b_flags |= B_WANTED;
- sleep((caddr_t)bp, PRIBIO + 1);
+ tsleep((caddr_t)bp, PRIBIO + 1, "vinvalbf", 0);
splx(s);
break;
}
@@ -459,6 +481,7 @@ vinvalbuf(vp, save)
/*
* Associate a buffer with a vnode.
*/
+void
bgetvp(vp, bp)
register struct vnode *vp;
register struct buf *bp;
@@ -487,6 +510,7 @@ bgetvp(vp, bp)
/*
* Disassociate a buffer from a vnode.
*/
+void
brelvp(bp)
register struct buf *bp;
{
@@ -515,6 +539,7 @@ brelvp(bp)
* Used to assign file specific control information
* (indirect blocks) to the vnode to which they belong.
*/
+void
reassignbuf(bp, newvp)
register struct buf *bp;
register struct vnode *newvp;
@@ -551,6 +576,7 @@ reassignbuf(bp, newvp)
* Used for root filesystem, argdev, and swap areas.
* Also used for memory file system special devices.
*/
+int
bdevvp(dev, vpp)
dev_t dev;
struct vnode **vpp;
@@ -644,6 +670,7 @@ loop:
* indicate that the vnode is no longer usable (possibly having
* been changed to a new file system type).
*/
+int
vget(vp)
register struct vnode *vp;
{
@@ -651,7 +678,7 @@ vget(vp)
if (vp->v_flag & VXLOCK) {
vp->v_flag |= VXWANT;
- sleep((caddr_t)vp, PINOD);
+ tsleep((caddr_t)vp, PINOD, "vget", 0);
return (1);
}
if (vp->v_usecount == 0) {
@@ -710,6 +737,7 @@ void vrele(vp)
panic("vrele: ref cnt");
}
#endif
+ vp->v_writecount = 0; /* XXX */
if (vfreeh == NULLVP) {
/*
* insert into empty list
@@ -731,6 +759,7 @@ void vrele(vp)
/*
* Page or buffer structure gets a reference.
*/
+void
vhold(vp)
register struct vnode *vp;
{
@@ -741,6 +770,7 @@ vhold(vp)
/*
* Page or buffer structure frees a reference.
*/
+void
holdrele(vp)
register struct vnode *vp;
{
@@ -760,6 +790,7 @@ holdrele(vp)
*/
int busyprt = 0; /* patch to print out busy vnodes */
+int
vflush(mp, skipvp, flags)
struct mount *mp;
struct vnode *skipvp;
@@ -902,7 +933,7 @@ void vgoneall(vp)
*/
if (vp->v_flag & VXLOCK) {
vp->v_flag |= VXWANT;
- sleep((caddr_t)vp, PINOD);
+ tsleep((caddr_t)vp, PINOD, "vgoneall", 0);
return;
}
/*
@@ -933,11 +964,12 @@ void vgoneall(vp)
* Eliminate all activity associated with a vnode
* in preparation for reuse.
*/
-void vgone(vp)
+void
+vgone(vp)
register struct vnode *vp;
{
register struct vnode *vq;
- struct vnode *vx;
+ struct vnode *vx = 0;
long count;
/*
@@ -946,7 +978,7 @@ void vgone(vp)
*/
if (vp->v_flag & VXLOCK) {
vp->v_flag |= VXWANT;
- sleep((caddr_t)vp, PINOD);
+ tsleep((caddr_t)vp, PINOD, "vgone", 0);
return;
}
/*
@@ -1017,6 +1049,7 @@ void vgone(vp)
/*
* Lookup a vnode by device number.
*/
+int
vfinddev(dev, type, vpp)
dev_t dev;
enum vtype type;
@@ -1036,6 +1069,7 @@ vfinddev(dev, type, vpp)
/*
* Calculate the total number of references to a special device.
*/
+int
vcount(vp)
register struct vnode *vp;
{
@@ -1066,8 +1100,9 @@ loop:
static char *typename[] =
{ "VNON", "VREG", "VDIR", "VBLK", "VCHR", "VLNK", "VSOCK", "VFIFO", "VBAD" };
+void
vprint(label, vp)
- char *label;
+ const char *label;
register struct vnode *vp;
{
char buf[64];
@@ -1127,6 +1162,7 @@ int kinfo_vgetfailed;
* Copyout address of vnode followed by vnode.
*/
/* ARGSUSED */
+int
kinfo_vnode(op, where, acopysize, arg, aneeded)
int op;
char *where;
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-02 09:10:56 +0000