From a9f28ccb91ab50e877abb29ad84b5d50562048bb Mon Sep 17 00:00:00 2001
From: wollman <wollman@FreeBSD.org>
Date: Sun, 23 Oct 1994 23:26:18 +0000
Subject: Implement fs.nfs MIB variables.

---
 sys/nfs/nfs.h        | 14 ++++++++++++--
 sys/nfs/nfs_vfsops.c | 51 ++++++++++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 62 insertions(+), 3 deletions(-)

(limited to 'sys/nfs')

diff --git a/sys/nfs/nfs.h b/sys/nfs/nfs.h
index c79eefb..e77353f 100644
--- a/sys/nfs/nfs.h
+++ b/sys/nfs/nfs.h
@@ -34,7 +34,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)nfs.h	8.1 (Berkeley) 6/10/93
- * $Id: nfs.h,v 1.5 1994/10/02 17:26:54 phk Exp $
+ * $Id: nfs.h,v 1.6 1994/10/17 17:47:30 phk Exp $
  */
 
 #ifndef _NFS_NFS_H_
@@ -156,6 +156,16 @@ struct nfsstats {
 #define	NFSSVC_MNTD	0x100
 
 /*
+ * fs.nfs sysctl(3) identifiers
+ */
+#define NFS_NFSSTATS	1		/* struct: struct nfsstats */
+
+#define FS_NFS_NAMES { \
+		       { 0, 0 }, \
+		       { "nfsstats", CTLTYPE_STRUCT }, \
+}
+
+/*
  * The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts.
  * What should be in this set is open to debate, but I believe that since
  * I/O system calls on ufs are never interrupted by signals the set should
@@ -211,7 +221,7 @@ TAILQ_HEAD(, nfsreq) nfs_reqq;
 #define	R_MUSTRESEND	0x40		/* Must resend request */
 #define	R_GETONEREP	0x80		/* Probe for one reply only */
 
-struct nfsstats nfsstats;
+extern struct nfsstats nfsstats;
 
 /*
  * A list of nfssvc_sock structures is maintained with all the sockets
diff --git a/sys/nfs/nfs_vfsops.c b/sys/nfs/nfs_vfsops.c
index 5e7bd7d..5d7d9c4 100644
--- a/sys/nfs/nfs_vfsops.c
+++ b/sys/nfs/nfs_vfsops.c
@@ -34,7 +34,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)nfs_vfsops.c	8.3 (Berkeley) 1/4/94
- * $Id: nfs_vfsops.c,v 1.6 1994/10/17 17:47:39 phk Exp $
+ * $Id: nfs_vfsops.c,v 1.7 1994/10/22 17:52:59 phk Exp $
  */
 
 #include <sys/param.h>
@@ -66,6 +66,10 @@
 #include <nfs/nfsdiskless.h>
 #include <nfs/nqnfs.h>
 
+struct nfsstats nfsstats;
+static int nfs_sysctl(int *, u_int, void *, size_t *, void *, size_t,
+		      struct proc *);
+
 /*
  * nfs vfs operations.
  */
@@ -81,6 +85,7 @@ struct vfsops nfs_vfsops = {
 	nfs_fhtovp,
 	nfs_vptofh,
 	nfs_init,
+	nfs_sysctl
 };
 VFS_SET(nfs_vfsops, nfs, MOUNT_NFS, 0);
 
@@ -772,3 +777,47 @@ nfs_quotactl(mp, cmd, uid, arg, p)
 
 	return (EOPNOTSUPP);
 }
+
+/*
+ * Do that sysctl thang...
+ */
+static int
+nfs_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp,
+	   size_t newlen, struct proc *p)
+{
+	int rv;
+
+	/*
+	 * All names at this level are terminal.
+	 */
+	if(namelen > 1)
+		return ENOTDIR;	/* overloaded */
+
+	switch(name[0]) {
+	case NFS_NFSSTATS:
+		if(!oldp) {
+			*oldlenp = sizeof nfsstats;
+			return 0;
+		}
+
+		if(*oldlenp < sizeof nfsstats) {
+			*oldlenp = sizeof nfsstats;
+			return ENOMEM;
+		}
+
+		rv = copyout(&nfsstats, oldp, sizeof nfsstats);
+		if(rv) return rv;
+
+		if(newp && newlen != sizeof nfsstats)
+			return EINVAL;
+
+		if(newp) {
+			return copyin(newp, &nfsstats, sizeof nfsstats);
+		}
+		return 0;
+
+	default:
+		return EOPNOTSUPP;
+	}
+}
+
-- 
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