X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Flockd%2Fmon.c;h=e4d563543b11066a1acd17a5beb7d0a8916aa520;hb=cc77b1521d06be07c9bb1a4a3e1f775dcaa15093;hp=3935d7b604f562127026b9b8364f93c89f131bcd;hpb=ea72a7f170e686baf00ceee57b6197bef686889c;p=linux-2.6

diff --git a/fs/lockd/mon.c b/fs/lockd/mon.c
index 3935d7b604..e4d563543b 100644
--- a/fs/lockd/mon.c
+++ b/fs/lockd/mon.c
@@ -149,6 +149,9 @@ nsm_create(void)
 
 /*
  * XDR functions for NSM.
+ *
+ * See http://www.opengroup.org/ for details on the Network
+ * Status Monitor wire protocol.
  */
 
 static __be32 *xdr_encode_nsm_string(__be32 *p, char *string)
@@ -215,29 +218,20 @@ static __be32 *xdr_encode_mon_id(__be32 *p, struct nsm_args *argp)
 	return xdr_encode_my_id(p, argp);
 }
 
-static __be32 *
-xdr_encode_common(struct rpc_rqst *rqstp, __be32 *p, struct nsm_args *argp)
+/*
+ * The "priv" argument may contain private information required
+ * by the SM_MON call. This information will be supplied in the
+ * SM_NOTIFY call.
+ *
+ * Linux provides the raw IP address of the monitored host,
+ * left in network byte order.
+ */
+static __be32 *xdr_encode_priv(__be32 *p, struct nsm_args *argp)
 {
-	char	buffer[20], *name;
-
-	/*
-	 * Use the dotted-quad IP address of the remote host as
-	 * identifier. Linux statd always looks up the canonical
-	 * hostname first for whatever remote hostname it receives,
-	 * so this works alright.
-	 */
-	if (nsm_use_hostnames) {
-		name = argp->mon_name;
-	} else {
-		sprintf(buffer, "%u.%u.%u.%u", NIPQUAD(argp->addr));
-		name = buffer;
-	}
-	if (!(p = xdr_encode_string(p, name))
-	 || !(p = xdr_encode_string(p, utsname()->nodename)))
-		return ERR_PTR(-EIO);
-	*p++ = htonl(argp->prog);
-	*p++ = htonl(argp->vers);
-	*p++ = htonl(argp->proc);
+	*p++ = argp->addr;
+	*p++ = 0;
+	*p++ = 0;
+	*p++ = 0;
 
 	return p;
 }
@@ -245,15 +239,14 @@ xdr_encode_common(struct rpc_rqst *rqstp, __be32 *p, struct nsm_args *argp)
 static int
 xdr_encode_mon(struct rpc_rqst *rqstp, __be32 *p, struct nsm_args *argp)
 {
-	p = xdr_encode_common(rqstp, p, argp);
+	p = xdr_encode_mon_id(p, argp);
+	if (IS_ERR(p))
+		return PTR_ERR(p);
+
+	p = xdr_encode_priv(p, argp);
 	if (IS_ERR(p))
 		return PTR_ERR(p);
 
-	/* Surprise - there may even be room for an IPv6 address now */
-	*p++ = argp->addr;
-	*p++ = 0;
-	*p++ = 0;
-	*p++ = 0;
 	rqstp->rq_slen = xdr_adjust_iovec(rqstp->rq_svec, p);
 	return 0;
 }
@@ -261,7 +254,7 @@ xdr_encode_mon(struct rpc_rqst *rqstp, __be32 *p, struct nsm_args *argp)
 static int
 xdr_encode_unmon(struct rpc_rqst *rqstp, __be32 *p, struct nsm_args *argp)
 {
-	p = xdr_encode_common(rqstp, p, argp);
+	p = xdr_encode_mon_id(p, argp);
 	if (IS_ERR(p))
 		return PTR_ERR(p);
 	rqstp->rq_slen = xdr_adjust_iovec(rqstp->rq_svec, p);
@@ -286,9 +279,11 @@ xdr_decode_stat(struct rpc_rqst *rqstp, __be32 *p, struct nsm_res *resp)
 }
 
 #define SM_my_name_sz	(1+XDR_QUADLEN(SM_MAXSTRLEN))
-#define SM_my_id_sz	(3+1+SM_my_name_sz)
-#define SM_mon_id_sz	(1+XDR_QUADLEN(20)+SM_my_id_sz)
-#define SM_mon_sz	(SM_mon_id_sz+4)
+#define SM_my_id_sz	(SM_my_name_sz+3)
+#define SM_mon_name_sz	(1+XDR_QUADLEN(SM_MAXSTRLEN))
+#define SM_mon_id_sz	(SM_mon_name_sz+SM_my_id_sz)
+#define SM_priv_sz	(XDR_QUADLEN(SM_PRIV_SIZE))
+#define SM_mon_sz	(SM_mon_id_sz+SM_priv_sz)
 #define SM_monres_sz	2
 #define SM_unmonres_sz	1