make adjustments for v6 of the qemu NFS driver

[deb_libnfs.git] / lib / socket.c

diff --git a/lib/socket.c b/lib/socket.c
index 384ba132b53d2465d147c249e4467dc904e6ba36..152dfb4a44df57528ccc7106348bcf32afb14764 100644 (file)
--- a/lib/socket.c
+++ b/lib/socket.c
@@ -14,16 +14,6 @@
    You should have received a copy of the GNU Lesser General Public License
    along with this program; if not, see <http://www.gnu.org/licenses/>.
 */
-#ifdef WIN32
-#include "win32_compat.h"
-#else
-#include <unistd.h>
-#include <arpa/inet.h>
-#include <sys/ioctl.h>
-#include <sys/socket.h>
-#include <netdb.h>
-#endif/*WIN32*/
-
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
@@ -32,22 +22,52 @@
 #include "aros_compat.h"
 #endif
 
+#ifdef WIN32
+#include "win32_compat.h"
+#endif
+
+#ifdef HAVE_ARPA_INET_H
+#include <arpa/inet.h>
+#endif
+
 #ifdef HAVE_POLL_H
 #include <poll.h>
 #endif
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <assert.h>
-#include <fcntl.h>
-#include <string.h>
-#include <errno.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#ifdef HAVE_SYS_IOCTL_H
+#include <sys/ioctl.h>
+#endif
+
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+
+#ifdef HAVE_NETINET_TCP_H
+#include <netinet/tcp.h>
+#endif
+
+#ifdef HAVE_NETDB_H
+#include <netdb.h>
+#endif
+
 #ifdef HAVE_SYS_FILIO_H
 #include <sys/filio.h>
 #endif
+
 #ifdef HAVE_SYS_SOCKIO_H
 #include <sys/sockio.h>
 #endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <fcntl.h>
+#include <string.h>
+#include <errno.h>
 #include <sys/types.h>
 #include "libnfs-zdr.h"
 #include "libnfs.h"
@@ -76,6 +96,26 @@ static void set_nonblocking(int fd)
 #endif //FIXME
 }
 
+#ifdef HAVE_NETINET_TCP_H
+int set_tcp_sockopt(int sockfd, int optname, int value)
+{
+       int level;
+
+       #if defined(__FreeBSD__) || defined(__sun) || (defined(__APPLE__) && defined(__MACH__))
+       struct protoent *buf;
+
+       if ((buf = getprotobyname("tcp")) != NULL)
+               level = buf->p_proto;
+       else
+               return -1;
+       #else
+               level = SOL_TCP;
+       #endif
+
+       return setsockopt(sockfd, level, optname, (char *)&value, sizeof(value));
+}
+#endif
+
 int rpc_get_fd(struct rpc_context *rpc)
 {
        assert(rpc->magic == RPC_CONTEXT_MAGIC);
@@ -147,8 +187,6 @@ static int rpc_read_from_socket(struct rpc_context *rpc)
 
        assert(rpc->magic == RPC_CONTEXT_MAGIC);
 
-       assert(rpc->magic == RPC_CONTEXT_MAGIC);
-
        if (ioctl(rpc->fd, FIONREAD, &available) != 0) {
                rpc_set_error(rpc, "Ioctl FIONREAD returned error : %d. Closing socket.", errno);
                return -1;
@@ -242,14 +280,17 @@ static int rpc_read_from_socket(struct rpc_context *rpc)
        rpc->inpos += count;
 
        if (rpc->inpos == rpc->insize) {
-               if (rpc_process_pdu(rpc, rpc->inbuf, pdu_size) != 0) {
-                       rpc_set_error(rpc, "Invalid/garbage pdu received from server. Closing socket");
-                       return -1;
-               }
-               free(rpc->inbuf);
+               char *buf = rpc->inbuf;
+
                rpc->inbuf  = NULL;
                rpc->insize = 0;
                rpc->inpos  = 0;
+
+               if (rpc_process_pdu(rpc, buf, pdu_size) != 0) {
+                       rpc_set_error(rpc, "Invalid/garbage pdu received from server. Closing socket");
+                       return -1;
+               }
+               free(buf);
        }
 
        return 0;
@@ -351,6 +392,17 @@ void rpc_unset_autoreconnect(struct rpc_context *rpc)
        rpc->auto_reconnect = 0;
 }
 
+void rpc_set_tcp_syncnt(struct rpc_context *rpc, int v)
+{
+       assert(rpc->magic == RPC_CONTEXT_MAGIC);
+
+       rpc->tcp_syncnt = v;
+}
+
+#ifndef TCP_SYNCNT
+#define TCP_SYNCNT        7
+#endif
+
 static int rpc_connect_sockaddr_async(struct rpc_context *rpc, struct sockaddr_storage *s)
 {
        int socksize;
@@ -361,6 +413,11 @@ static int rpc_connect_sockaddr_async(struct rpc_context *rpc, struct sockaddr_s
        case AF_INET:
                socksize = sizeof(struct sockaddr_in);
                rpc->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+#ifdef HAVE_NETINET_TCP_H
+               if (rpc->tcp_syncnt != RPC_PARAM_UNDEFINED) {
+                       set_tcp_sockopt(rpc->fd, TCP_SYNCNT, rpc->tcp_syncnt);
+               }
+#endif
                break;
        default:
                rpc_set_error(rpc, "Can not handle AF_FAMILY:%d", s->ss_family);
@@ -395,8 +452,12 @@ static int rpc_connect_sockaddr_async(struct rpc_context *rpc, struct sockaddr_s
                static int portOfs = 0;
                const int firstPort = 512;      /* >= 512 according to Sun docs */
                const int portCount = IPPORT_RESERVED - firstPort;
-               int startOfs = portOfs, port, rc;
+               int startOfs, port, rc;
 
+               if (portOfs == 0) {
+                       portOfs = time(NULL) % 400;
+               }
+               startOfs = portOfs;
                do {
                        rc = -1;
                        port = htons(firstPort + portOfs);