Add nfs ddb hooks, for now only to show all the outstanding nfsreq's

and to print out struct nfsreq.

"get it in so people can pound on it" blambert@
OK and information_s_ on the manpage from miod@

1 files changed, 61 insertions, 0 deletions

diff --git a/sys/nfs/nfs_debug.c b/sys/nfs/nfs_debug.c
new file mode 100644
index 00000000000..f9055724c86
--- /dev/null
+++ b/sys/nfs/nfs_debug.c
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2009 Thordur I. Bjornsson. <thib@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/proc.h>
+#include <sys/mount.h>
+#include <sys/kernel.h>
+#include <sys/queue.h>
+
+#include <nfs/rpcv2.h>
+#include <nfs/nfsproto.h>
+#include <nfs/nfs.h>
+
+#include <machine/db_machdep.h>
+#include <ddb/db_interface.h>
+#include <ddb/db_output.h>
+
+extern struct nfsreqhead nfs_reqq;
+
+void
+db_show_all_nfsreqs(db_expr_t expr, int haddr, db_expr_t count, char *modif)
+{
+	struct nfsreq	*rep;
+
+	if (TAILQ_EMPTY(&nfs_reqq)) {
+		db_printf("no outstanding requests\n");
+		return;
+	}
+
+	TAILQ_FOREACH(rep, &nfs_reqq, r_chain)
+		db_printf("%p\n", rep);
+
+}
+
+void
+db_nfsreq_print(struct nfsreq *rep, int full, int (*pr)(const char *, ...))
+{
+	(*pr)("xid 0x%x flags 0x%x rexmit %i procnum %i proc %p\n",
+	    rep->r_xid, rep->r_flags, rep->r_rexmit, rep->r_procnum,
+	    rep->r_procp);
+
+	if (full) {
+		(*pr)("mreq %p mrep %p md %p nfsmount %p vnode %p timer %i",
+		    " rtt %i\n",
+		    rep->r_mreq, rep->r_mrep, rep->r_md, rep->r_nmp,
+		    rep->r_vp, rep->r_timer, rep->r_rtt);
+	}
+}