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authorRaghavendra Bhat <raghavendra@redhat.com>2012-10-25 17:06:31 +0530
committerVijay Bellur <vbellur@redhat.com>2012-12-03 03:02:55 -0800
commitfa1607ea596802d3d3177d775eeecb0f0e5d496f (patch)
treea8bb59c1d459c5f6f1b90364da80b213f48d8d4f /rpc
parent3cade0a1e9dfc641e5b6db2f044af9f50ff604d6 (diff)
socket,rdma: before binding to any port check if it is a reserved port
* The list of ports which are reserved is obtained by reading the file /proc/sys/net/ipv4/ip_local_reserved_ports. Change-Id: I3a832f53efbb79dd719b34a30cbaf28269f25816 BUG: 762989 Signed-off-by: Raghavendra Bhat <raghavendra@redhat.com> Reviewed-on: http://review.gluster.org/4131 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
Diffstat (limited to 'rpc')
-rw-r--r--rpc/rpc-transport/rdma/src/name.c32
-rw-r--r--rpc/rpc-transport/socket/src/name.c30
2 files changed, 38 insertions, 24 deletions
diff --git a/rpc/rpc-transport/rdma/src/name.c b/rpc/rpc-transport/rdma/src/name.c
index 3718cd7..6b0ee11 100644
--- a/rpc/rpc-transport/rdma/src/name.c
+++ b/rpc/rpc-transport/rdma/src/name.c
@@ -14,18 +14,14 @@
#include <netdb.h>
#include <string.h>
-#ifdef CLIENT_PORT_CEILING
-#undef CLIENT_PORT_CEILING
-#endif
-
-#define CLIENT_PORT_CEILING 1024
-
#ifndef AF_INET_SDP
#define AF_INET_SDP 27
#endif
#include "rpc-transport.h"
#include "rdma.h"
+#include "common-utils.h"
+
int32_t
gf_resolve_ip6 (const char *hostname,
@@ -38,9 +34,17 @@ static int32_t
af_inet_bind_to_port_lt_ceiling (int fd, struct sockaddr *sockaddr,
socklen_t sockaddr_len, int ceiling)
{
- int32_t ret = -1;
- /* struct sockaddr_in sin = {0, }; */
- uint16_t port = ceiling - 1;
+ int32_t ret = -1;
+ uint16_t port = ceiling - 1;
+ // by default assume none of the ports are blocked and all are available
+ gf_boolean_t ports[1024] = {_gf_false,};
+ int i = 0;
+
+ ret = gf_process_reserved_ports (ports);
+ if (ret != 0) {
+ for (i = 0; i < 1024; i++)
+ ports[i] = _gf_false;
+ }
while (port)
{
@@ -55,7 +59,11 @@ af_inet_bind_to_port_lt_ceiling (int fd, struct sockaddr *sockaddr,
((struct sockaddr_in *)sockaddr)->sin_port = htons (port);
break;
}
-
+ // ignore the reserved ports
+ if (ports[port] == _gf_true) {
+ port--;
+ continue;
+ }
ret = bind (fd, sockaddr, sockaddr_len);
if (ret == 0)
@@ -419,12 +427,12 @@ gf_rdma_client_bind (rpc_transport_t *this,
case AF_INET6:
ret = af_inet_bind_to_port_lt_ceiling (sock, sockaddr,
*sockaddr_len,
- CLIENT_PORT_CEILING);
+ GF_CLIENT_PORT_CEILING);
if (ret == -1) {
gf_log (this->name, GF_LOG_WARNING,
"cannot bind inet socket (%d) to port "
"less than %d (%s)",
- sock, CLIENT_PORT_CEILING, strerror (errno));
+ sock, GF_CLIENT_PORT_CEILING, strerror (errno));
ret = 0;
}
break;
diff --git a/rpc/rpc-transport/socket/src/name.c b/rpc/rpc-transport/socket/src/name.c
index d37c83e..1647d5b 100644
--- a/rpc/rpc-transport/socket/src/name.c
+++ b/rpc/rpc-transport/socket/src/name.c
@@ -15,12 +15,6 @@
#include <netdb.h>
#include <string.h>
-#ifdef CLIENT_PORT_CEILING
-#undef CLIENT_PORT_CEILING
-#endif
-
-#define CLIENT_PORT_CEILING 1024
-
#ifndef AF_INET_SDP
#define AF_INET_SDP 27
#endif
@@ -40,9 +34,17 @@ static int32_t
af_inet_bind_to_port_lt_ceiling (int fd, struct sockaddr *sockaddr,
socklen_t sockaddr_len, int ceiling)
{
- int32_t ret = -1;
- /* struct sockaddr_in sin = {0, }; */
- uint16_t port = ceiling - 1;
+ int32_t ret = -1;
+ uint16_t port = ceiling - 1;
+ // by default assume none of the ports are blocked and all are available
+ gf_boolean_t ports[1024] = {_gf_false,};
+ int i = 0;
+
+ ret = gf_process_reserved_ports (ports);
+ if (ret != 0) {
+ for (i = 0; i < 1024; i++)
+ ports[i] = _gf_false;
+ }
while (port)
{
@@ -57,7 +59,11 @@ af_inet_bind_to_port_lt_ceiling (int fd, struct sockaddr *sockaddr,
((struct sockaddr_in *)sockaddr)->sin_port = htons (port);
break;
}
-
+ // ignore the reserved ports
+ if (ports[port] == _gf_true) {
+ port--;
+ continue;
+ }
ret = bind (fd, sockaddr, sockaddr_len);
if (ret == 0)
@@ -440,12 +446,12 @@ client_bind (rpc_transport_t *this,
case AF_INET6:
if (!this->bind_insecure) {
ret = af_inet_bind_to_port_lt_ceiling (sock, sockaddr,
- *sockaddr_len, CLIENT_PORT_CEILING);
+ *sockaddr_len, GF_CLIENT_PORT_CEILING);
}
if (ret == -1) {
gf_log (this->name, GF_LOG_DEBUG,
"cannot bind inet socket (%d) to port less than %d (%s)",
- sock, CLIENT_PORT_CEILING, strerror (errno));
+ sock, GF_CLIENT_PORT_CEILING, strerror (errno));
ret = 0;
}
break;