Merge remote-tracking branch 'remotes/berrange/tags/socket-next-pull-request' into staging

# gpg: Signature made Tue 13 Mar 2018 18:12:14 GMT
# gpg:                using RSA key BE86EBB415104FDF
# gpg: Good signature from "Daniel P. Berrange <dan@berrange.com>"
# gpg:                 aka "Daniel P. Berrange <berrange@redhat.com>"
# Primary key fingerprint: DAF3 A6FD B26B 6291 2D0E  8E3F BE86 EBB4 1510 4FDF

* remotes/berrange/tags/socket-next-pull-request:
  char: allow passing pre-opened socket file descriptor at startup
  char: refactor parsing of socket address information
  sockets: allow SocketAddress 'fd' to reference numeric file descriptors
  sockets: check that the named file descriptor is a socket
  sockets: move fd_is_socket() into common sockets code
  sockets: strengthen test suite IP protocol availability checks
  sockets: pull code for testing IP availability out of specific test
  cutils: add qemu_strtoi & qemu_strtoui parsers for int/unsigned int types
  char: don't silently skip tn3270 protocol init when TLS is enabled

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

2 files changed, 28 insertions, 9 deletions

diff --git a/chardev/char-socket.c b/chardev/char-socket.c
index a220803c01..0c8d6d430a 100644
--- a/chardev/char-socket.c
+++ b/chardev/char-socket.c
@@ -663,8 +663,7 @@ static void tcp_chr_tls_handshake(QIOTask *task,
     if (qio_task_propagate_error(task, NULL)) {
         tcp_chr_disconnect(chr);
     } else {
-        /* tn3270 does not support TLS yet */
-        if (s->do_telnetopt && !s->is_tn3270) {
+        if (s->do_telnetopt) {
             tcp_chr_telnet_init(chr);
         } else {
             tcp_chr_connect(chr);
@@ -1009,25 +1008,36 @@ static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
     const char *path = qemu_opt_get(opts, "path");
     const char *host = qemu_opt_get(opts, "host");
     const char *port = qemu_opt_get(opts, "port");
+    const char *fd = qemu_opt_get(opts, "fd");
     const char *tls_creds = qemu_opt_get(opts, "tls-creds");
     SocketAddressLegacy *addr;
     ChardevSocket *sock;
 
+    if ((!!path + !!fd + !!host) != 1) {
+        error_setg(errp,
+                   "Exactly one of 'path', 'fd' or 'host' required");
+        return;
+    }
+
     backend->type = CHARDEV_BACKEND_KIND_SOCKET;
-    if (!path) {
-        if (!host) {
-            error_setg(errp, "chardev: socket: no host given");
+    if (path) {
+        if (tls_creds) {
+            error_setg(errp, "TLS can only be used over TCP socket");
             return;
         }
+    } else if (host) {
         if (!port) {
             error_setg(errp, "chardev: socket: no port given");
             return;
         }
-    } else {
-        if (tls_creds) {
-            error_setg(errp, "TLS can only be used over TCP socket");
+    } else if (fd) {
+        /* We don't know what host to validate against when in client mode */
+        if (tls_creds && !is_listen) {
+            error_setg(errp, "TLS can not be used with pre-opened client FD");
             return;
         }
+    } else {
+        g_assert_not_reached();
     }
 
     sock = backend->u.socket.data = g_new0(ChardevSocket, 1);
@@ -1053,7 +1063,7 @@ static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
         addr->type = SOCKET_ADDRESS_LEGACY_KIND_UNIX;
         q_unix = addr->u.q_unix.data = g_new0(UnixSocketAddress, 1);
         q_unix->path = g_strdup(path);
-    } else {
+    } else if (host) {
         addr->type = SOCKET_ADDRESS_LEGACY_KIND_INET;
         addr->u.inet.data = g_new(InetSocketAddress, 1);
         *addr->u.inet.data = (InetSocketAddress) {
@@ -1066,6 +1076,12 @@ static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
             .has_ipv6 = qemu_opt_get(opts, "ipv6"),
             .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
         };
+    } else if (fd) {
+        addr->type = SOCKET_ADDRESS_LEGACY_KIND_FD;
+        addr->u.fd.data = g_new(String, 1);
+        addr->u.fd.data->str = g_strdup(fd);
+    } else {
+        g_assert_not_reached();
     }
     sock->addr = addr;
 }
diff --git a/chardev/char.c b/chardev/char.c
index 5d7b079ef0..f7e0d37f24 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -808,6 +808,9 @@ QemuOptsList qemu_chardev_opts = {
             .name = "port",
             .type = QEMU_OPT_STRING,
         },{
+            .name = "fd",
+            .type = QEMU_OPT_STRING,
+        },{
             .name = "localaddr",
             .type = QEMU_OPT_STRING,
         },{