Add two new utilities and two new daemons to /usr/src/usr.sbin that

are specifically used by the experimental nfsv4 subsystem.
  nfscbd - The NFSv4 client callback daemon.
  nfsuserd - The NFSv4 daemon that maps between user and group name
           and their corresponding uid/gid numbers.
  nfsdumpstate - A utility that dumps out the NFSv4 Open/Lock state.
  nfsrevoke - Administratively revokes an NFSv4 client, releasing all
           NFSv4 Open/Lock state it holds on the server.

Approved by:	kib (mentor)

1 files changed, 280 insertions, 0 deletions

diff --git a/usr.sbin/nfsdumpstate/nfsdumpstate.c b/usr.sbin/nfsdumpstate/nfsdumpstate.c
new file mode 100644
index 0000000..54841dc
--- /dev/null
+++ b/usr.sbin/nfsdumpstate/nfsdumpstate.c
@@ -0,0 +1,280 @@
+/*-
+ * Copyright (c) 2009 Rick Macklem, University of Guelph
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/linker.h>
+#include <sys/module.h>
+#include <sys/socket.h>
+
+#include <arpa/inet.h>
+
+#include <netinet/in.h>
+
+#include <nfs/nfssvc.h>
+
+#include <fs/nfs/rpcv2.h>
+#include <fs/nfs/nfsproto.h>
+#include <fs/nfs/nfskpiport.h>
+#include <fs/nfs/nfs.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define	DUMPSIZE	10000
+
+static void dump_lockstate(char *);
+static void dump_openstate(void);
+static void usage(void);
+static char *open_flags(uint32_t);
+static char *deleg_flags(uint32_t);
+static char *lock_flags(uint32_t);
+static char *client_flags(uint32_t);
+
+static struct nfsd_dumpclients dp[DUMPSIZE];
+static struct nfsd_dumplocks lp[DUMPSIZE];
+static char flag_string[20];
+
+int
+main(int argc, char **argv)
+{
+	int ch, openstate;
+	char *lockfile;
+
+	if (modfind("nfsd") < 0)
+		errx(1, "nfsd not loaded - self terminating");
+	openstate = 0;
+	lockfile = NULL;
+	while ((ch = getopt(argc, argv, "ol")) != -1)
+		switch (ch) {
+		case 'o':
+			openstate = 1;
+			break;
+		case 'l':
+			lockfile = optarg;
+			break;
+		default:
+			usage();
+		}
+	argc -= optind;
+	argv += optind;
+
+	if (openstate == 0 && lockfile == NULL)
+		openstate = 1;
+	else if (openstate != 0 && lockfile != NULL)
+		errx(1, "-o and -l cannot both be specified");
+
+	/*
+	 * For -o, dump all open/lock state.
+	 * For -l, dump lock state for that file.
+	 */
+	if (openstate != 0)
+		dump_openstate();
+	else
+		dump_lockstate(lockfile);
+	exit(0);
+}
+
+static void
+usage(void)
+{
+
+	errx(1, "usage: nfsdumpstate [-o] [-l]");
+}
+
+/*
+ * Dump all open/lock state.
+ */
+static void
+dump_openstate(void)
+{
+	struct nfsd_dumplist dumplist;
+	int cnt, i;
+
+	dumplist.ndl_size = DUMPSIZE;
+	dumplist.ndl_list = (void *)dp;
+	if (nfssvc(NFSSVC_DUMPCLIENTS, &dumplist) < 0)
+		errx(1, "Can't perform dump clients syscall");
+
+	printf("%-13s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %-15s %s\n",
+	    "Flags", "OpenOwner", "Open", "LockOwner",
+	    "Lock", "Deleg", "OldDeleg", "Clientaddr", "ClientID");
+	/*
+	 * Loop through results, printing them out.
+	 */
+	cnt = 0;
+	while (dp[cnt].ndcl_clid.nclid_idlen > 0 && cnt < DUMPSIZE) {
+		printf("%-13s ", client_flags(dp[cnt].ndcl_flags));
+		printf("%9d %9d %9d %9d %9d %9d ",
+		    dp[cnt].ndcl_nopenowners,
+		    dp[cnt].ndcl_nopens,
+		    dp[cnt].ndcl_nlockowners,
+		    dp[cnt].ndcl_nlocks,
+		    dp[cnt].ndcl_ndelegs,
+		    dp[cnt].ndcl_nolddelegs);
+		if (dp[cnt].ndcl_addrfam == AF_INET)
+			printf("%-15s ",
+			    inet_ntoa(dp[cnt].ndcl_cbaddr.sin_addr));
+		for (i = 0; i < dp[cnt].ndcl_clid.nclid_idlen; i++)
+			printf("%02x", dp[cnt].ndcl_clid.nclid_id[i]);
+		printf("\n");
+		cnt++;
+	}
+}
+
+/*
+ * Dump the lock state for a file.
+ */
+static void
+dump_lockstate(char *fname)
+{
+	struct nfsd_dumplocklist dumplocklist;
+	int cnt, i;
+
+	dumplocklist.ndllck_size = DUMPSIZE;
+	dumplocklist.ndllck_list = (void *)lp;
+	dumplocklist.ndllck_fname = fname;
+	if (nfssvc(NFSSVC_DUMPLOCKS, &dumplocklist) < 0)
+		errx(1, "Can't dump locks for %s\n", fname);
+
+	printf("%-11s %-36s %-15s %s\n",
+	    "Open/Lock",
+	    "          Stateid or Lock Range",
+	    "Clientaddr",
+	    "Owner and ClientID");
+	/*
+	 * Loop through results, printing them out.
+	 */
+	cnt = 0;
+	while (lp[cnt].ndlck_clid.nclid_idlen > 0 && cnt < DUMPSIZE) {
+		if (lp[cnt].ndlck_flags & NFSLCK_OPEN)
+			printf("%-11s %9d %08x %08x %08x ",
+			    open_flags(lp[cnt].ndlck_flags),
+			    lp[cnt].ndlck_stateid.seqid,
+			    lp[cnt].ndlck_stateid.other[0],
+			    lp[cnt].ndlck_stateid.other[1],
+			    lp[cnt].ndlck_stateid.other[2]);
+		else if (lp[cnt].ndlck_flags & (NFSLCK_DELEGREAD |
+		    NFSLCK_DELEGWRITE))
+			printf("%-11s %9d %08x %08x %08x ",
+			    deleg_flags(lp[cnt].ndlck_flags),
+			    lp[cnt].ndlck_stateid.seqid,
+			    lp[cnt].ndlck_stateid.other[0],
+			    lp[cnt].ndlck_stateid.other[1],
+			    lp[cnt].ndlck_stateid.other[2]);
+		else
+			printf("%-11s  %17lld %17lld ",
+			    lock_flags(lp[cnt].ndlck_flags),
+			    lp[cnt].ndlck_first,
+			    lp[cnt].ndlck_end);
+		if (lp[cnt].ndlck_addrfam == AF_INET)
+			printf("%-15s ",
+			    inet_ntoa(lp[cnt].ndlck_cbaddr.sin_addr));
+		else
+			printf("%-15s ", "  ");
+		for (i = 0; i < lp[cnt].ndlck_owner.nclid_idlen; i++)
+			printf("%02x", lp[cnt].ndlck_owner.nclid_id[i]);
+		printf(" ");
+		for (i = 0; i < lp[cnt].ndlck_clid.nclid_idlen; i++)
+			printf("%02x", lp[cnt].ndlck_clid.nclid_id[i]);
+		printf("\n");
+		cnt++;
+	}
+}
+
+/*
+ * Parse the Open/Lock flag bits and create a string to be printed.
+ */
+static char *
+open_flags(uint32_t flags)
+{
+	int i, j;
+
+	strlcpy(flag_string, "Open ", sizeof (flag_string));
+	i = 5;
+	if (flags & NFSLCK_READACCESS)
+		flag_string[i++] = 'R';
+	if (flags & NFSLCK_WRITEACCESS)
+		flag_string[i++] = 'W';
+	flag_string[i++] = ' ';
+	flag_string[i++] = 'D';
+	flag_string[i] = 'N';
+	j = i;
+	if (flags & NFSLCK_READDENY)
+		flag_string[i++] = 'R';
+	if (flags & NFSLCK_WRITEDENY)
+		flag_string[i++] = 'W';
+	if (i == j)
+		i++;
+	flag_string[i] = '\0';
+	return (flag_string);
+}
+
+static char *
+deleg_flags(uint32_t flags)
+{
+
+	if (flags & NFSLCK_DELEGREAD)
+		strlcpy(flag_string, "Deleg R", sizeof (flag_string));
+	else
+		strlcpy(flag_string, "Deleg W", sizeof (flag_string));
+	return (flag_string);
+}
+
+static char *
+lock_flags(uint32_t flags)
+{
+
+	if (flags & NFSLCK_READ)
+		strlcpy(flag_string, "Lock R", sizeof (flag_string));
+	else
+		strlcpy(flag_string, "Lock W", sizeof (flag_string));
+	return (flag_string);
+}
+
+static char *
+client_flags(uint32_t flags)
+{
+
+	flag_string[0] = '\0';
+	if (flags & LCL_NEEDSCONFIRM)
+		strlcat(flag_string, "NC ", sizeof (flag_string));
+	if (flags & LCL_CALLBACKSON)
+		strlcat(flag_string, "CB ", sizeof (flag_string));
+	if (flags & LCL_GSS)
+		strlcat(flag_string, "GSS ", sizeof (flag_string));
+	if (flags & LCL_ADMINREVOKED)
+		strlcat(flag_string, "REV", sizeof (flag_string));
+	return (flag_string);
+}