aboutsummaryrefslogtreecommitdiff
path: root/io
diff options
context:
space:
mode:
authorDaniel P. Berrange <berrange@redhat.com>2016-02-03 14:00:28 +0000
committerDaniel P. Berrange <berrange@redhat.com>2016-02-15 14:49:00 +0000
commitc767ae62b9efb2c9b2a757984ff1b14f89b49249 (patch)
treef907fcf51d9c9227af5459867e0f7b8ee5871630 /io
parentfe81e932ec0d25157abbe5e7ebcb50493e61a4d6 (diff)
downloadqemu-arm-c767ae62b9efb2c9b2a757984ff1b14f89b49249.tar.gz
io: introduce helper for creating channels from file descriptors
Depending on what object a file descriptor refers to a different type of IO channel will be needed - either a QIOChannelFile or a QIOChannelSocket. Introduce a qio_channel_new_fd() method which will return the appropriate channel implementation. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Diffstat (limited to 'io')
-rw-r--r--io/Makefile.objs1
-rw-r--r--io/channel-util.c50
2 files changed, 51 insertions, 0 deletions
diff --git a/io/Makefile.objs b/io/Makefile.objs
index 0e3de31a5a..9d8337d89a 100644
--- a/io/Makefile.objs
+++ b/io/Makefile.objs
@@ -6,4 +6,5 @@ io-obj-y += channel-socket.o
io-obj-y += channel-tls.o
io-obj-y += channel-watch.o
io-obj-y += channel-websock.o
+io-obj-y += channel-util.o
io-obj-y += task.o
diff --git a/io/channel-util.c b/io/channel-util.c
new file mode 100644
index 0000000000..f96907cb5c
--- /dev/null
+++ b/io/channel-util.c
@@ -0,0 +1,50 @@
+/*
+ * QEMU I/O channels utility APIs
+ *
+ * Copyright (c) 2016 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "io/channel-util.h"
+#include "io/channel-file.h"
+#include "io/channel-socket.h"
+
+
+static bool fd_is_socket(int fd)
+{
+ int optval;
+ socklen_t optlen;
+ optlen = sizeof(optval);
+ return qemu_getsockopt(fd,
+ SOL_SOCKET,
+ SO_TYPE,
+ (char *)&optval,
+ &optlen) == 0;
+}
+
+
+QIOChannel *qio_channel_new_fd(int fd,
+ Error **errp)
+{
+ QIOChannel *ioc;
+
+ if (fd_is_socket(fd)) {
+ ioc = QIO_CHANNEL(qio_channel_socket_new_fd(fd, errp));
+ } else {
+ ioc = QIO_CHANNEL(qio_channel_file_new_fd(fd));
+ }
+ return ioc;
+}