Re: [PATCH BlueZ] shared/io-ell: Add support for ELL based IO handling

---
Makefile.am         |   6 +-
src/shared/io-ell.c | 155 ++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 160 insertions(+), 1 deletion(-)
create mode 100644 src/shared/io-ell.c

diff --git a/Makefile.am b/Makefile.am
index 9c3c17139..322706fad 100644
--- a/Makefile.am
+++ b/Makefile.am

@@ -95,7 +95,8 @@ gdbus_libgdbus_internal_la_SOURCES = gdbus/gdbus.h \

				gdbus/mainloop.c gdbus/watch.c \
				gdbus/object.c gdbus/client.c gdbus/polkit.c

-noinst_LTLIBRARIES += src/libshared-glib.la src/libshared-mainloop.la
+noinst_LTLIBRARIES += src/libshared-glib.la src/libshared-mainloop.la \
+				src/libshared-ell.la

shared_sources = src/shared/io.h src/shared/timeout.h \
			src/shared/queue.h src/shared/queue.c \

@@ -135,6 +136,9 @@ src_libshared_mainloop_la_SOURCES = $(shared_sources) \

				src/shared/timeout-mainloop.c \
				src/shared/mainloop.h src/shared/mainloop.c

+src_libshared_ell_la_SOURCES = $(shared_sources) \
+				src/shared/io-ell.c
+
attrib_sources = attrib/att.h attrib/att-database.h attrib/att.c \
		attrib/gatt.h attrib/gatt.c \
		attrib/gattrib.h attrib/gattrib.c \

diff --git a/src/shared/io-ell.c b/src/shared/io-ell.c
new file mode 100644
index 000000000..a885b935a
--- /dev/null
+++ b/src/shared/io-ell.c

@@ -0,0 +1,155 @@
+/*
+ *
+ *  BlueZ - Bluetooth protocol stack for Linux
+ *
+ *  Copyright (C) 2018  Intel Corporation. All rights reserved.
+ *
+ *
+ *  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 2.1 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, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <unistd.h>
+#include <errno.h>
+#include <sys/socket.h>
+
+#include <ell/ell.h>
+
+#include "src/shared/io.h"
+
+struct io {
+	struct l_io *l_io;
+};
+
+struct io *io_new(int fd)
+{
+	struct io *io;
+	struct l_io *l_io;
+
+	if (fd < 0)
+		return NULL;
+
+	io = l_new(struct io, 1);
+	if (!io)
+		return NULL;
+
+	l_io = l_io_new(fd);
+	if (!io) {
+		l_free(io);
+		return NULL;
+	}
+
+	io->l_io = l_io;
+
+	return io;
+}
+
+void io_destroy(struct io *io)
+{
+	if (!io)
+		return;
+
+	if (io->l_io)
+		l_io_destroy(io->l_io);
+
+	l_free(io);
+}
+
+int io_get_fd(struct io *io)
+{
+	if (!io || !io->l_io)
+		return -ENOTCONN;
+
+	return l_io_get_fd(io->l_io);
+}
+
+bool io_set_close_on_destroy(struct io *io, bool do_close)
+{
+	if (!io || !io->l_io)
+		return false;
+
+	return l_io_set_close_on_destroy(io->l_io, do_close);
+}
+
+bool io_set_read_handler(struct io *io, io_callback_func_t callback,
+				void *user_data, io_destroy_func_t destroy)
+{
+	if (!io || !io->l_io)
+		return false;
+
+	return l_io_set_read_handler(io->l_io, (l_io_read_cb_t) callback,
+							user_data, destroy);
+}
+
+bool io_set_write_handler(struct io *io, io_callback_func_t callback,
+				void *user_data, io_destroy_func_t destroy)
+{
+	if (!io || !io->l_io)
+		return false;
+
+	return l_io_set_write_handler(io->l_io, (l_io_write_cb_t) callback,
+							user_data, destroy);
+}
+
+bool io_set_disconnect_handler(struct io *io, io_callback_func_t callback,
+				void *user_data, io_destroy_func_t destroy)
+{
+	if (!io || !io->l_io)
+		return false;
+
+	return l_io_set_disconnect_handler(io->l_io,
+						(l_io_disconnect_cb_t) callback,
+							user_data, destroy);
+}
+
+ssize_t io_send(struct io *io, const struct iovec *iov, int iovcnt)
+{
+	ssize_t ret;
+	int fd;
+
+	if (!io || !io->l_io)
+		return -ENOTCONN;
+
+	fd = l_io_get_fd(io->l_io);
+	if (fd < 0)
+		return -ENOTCONN;
+
+	do {
+		ret = writev(fd, iov, iovcnt);
+	} while (ret < 0 && errno == EINTR);