NLM: fix source address of callback to client
Use the destination address of the original NLM request as the
source address in callbacks to the client.
Signed-off-by: Frank van Maarseveen <frankvm@frankvm.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/lockd/host.c b/fs/lockd/host.c
index c252a1c9..572601e9 100644
--- a/fs/lockd/host.c
+++ b/fs/lockd/host.c
@@ -44,9 +44,8 @@
*/
static struct nlm_host *
nlm_lookup_host(int server, const struct sockaddr_in *sin,
- int proto, int version,
- const char *hostname,
- int hostname_len)
+ int proto, int version, const char *hostname,
+ int hostname_len, const struct sockaddr_in *ssin)
{
struct hlist_head *chain;
struct hlist_node *pos;
@@ -54,7 +53,9 @@
struct nsm_handle *nsm = NULL;
int hash;
- dprintk("lockd: nlm_lookup_host(%u.%u.%u.%u, p=%d, v=%d, my role=%s, name=%.*s)\n",
+ dprintk("lockd: nlm_lookup_host("NIPQUAD_FMT"->"NIPQUAD_FMT
+ ", p=%d, v=%d, my role=%s, name=%.*s)\n",
+ NIPQUAD(ssin->sin_addr.s_addr),
NIPQUAD(sin->sin_addr.s_addr), proto, version,
server? "server" : "client",
hostname_len,
@@ -91,6 +92,8 @@
continue;
if (host->h_server != server)
continue;
+ if (!nlm_cmp_addr(&host->h_saddr, ssin))
+ continue;
/* Move to head of hash chain. */
hlist_del(&host->h_hash);
@@ -118,6 +121,7 @@
host->h_name = nsm->sm_name;
host->h_addr = *sin;
host->h_addr.sin_port = 0; /* ouch! */
+ host->h_saddr = *ssin;
host->h_version = version;
host->h_proto = proto;
host->h_rpcclnt = NULL;
@@ -174,8 +178,10 @@
nlmclnt_lookup_host(const struct sockaddr_in *sin, int proto, int version,
const char *hostname, int hostname_len)
{
+ struct sockaddr_in ssin = {0};
+
return nlm_lookup_host(0, sin, proto, version,
- hostname, hostname_len);
+ hostname, hostname_len, &ssin);
}
/*
@@ -185,9 +191,12 @@
nlmsvc_lookup_host(struct svc_rqst *rqstp,
const char *hostname, int hostname_len)
{
+ struct sockaddr_in ssin = {0};
+
+ ssin.sin_addr = rqstp->rq_daddr.addr;
return nlm_lookup_host(1, svc_addr_in(rqstp),
rqstp->rq_prot, rqstp->rq_vers,
- hostname, hostname_len);
+ hostname, hostname_len, &ssin);
}
/*
@@ -198,8 +207,9 @@
{
struct rpc_clnt *clnt;
- dprintk("lockd: nlm_bind_host(%08x)\n",
- (unsigned)ntohl(host->h_addr.sin_addr.s_addr));
+ dprintk("lockd: nlm_bind_host("NIPQUAD_FMT"->"NIPQUAD_FMT")\n",
+ NIPQUAD(host->h_saddr.sin_addr),
+ NIPQUAD(host->h_addr.sin_addr));
/* Lock host handle */
mutex_lock(&host->h_mutex);
@@ -226,6 +236,7 @@
.protocol = host->h_proto,
.address = (struct sockaddr *)&host->h_addr,
.addrsize = sizeof(host->h_addr),
+ .saddress = (struct sockaddr *)&host->h_saddr,
.timeout = &timeparms,
.servername = host->h_name,
.program = &nlm_program,