Recommit: Update libusb 1.0.9 to libusbx 1.0.16

third_party/libusb/src/libusb/os/poll_posix.c

Index: third_party/libusb/src/libusb/os/poll_posix.c
diff --git a/third_party/libusb/src/libusb/os/poll_posix.c b/third_party/libusb/src/libusb/os/poll_posix.c
new file mode 100644
index 0000000000000000000000000000000000000000..eeaf5dce49fca5763935619b1c3123dbbb90545e
--- /dev/null
+++ b/third_party/libusb/src/libusb/os/poll_posix.c
@@ -0,0 +1,51 @@
+/*
+ * poll_posix: poll compatibility wrapper for POSIX systems
+ * Copyright © 2013 RealVNC Ltd.
+ *
+ * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <stdlib.h>
+
+#include "libusbi.h"
+
+int usbi_pipe(int pipefd[2])
+{
+	int ret = pipe(pipefd);
+	if (ret != 0) {
+		return ret;
+	}
+	ret = fcntl(pipefd[1], F_GETFL);
+	if (ret == -1) {
+		usbi_dbg("Failed to get pipe fd flags: %d", errno);
+		goto err_close_pipe;
+	}
+	ret = fcntl(pipefd[1], F_SETFL, ret | O_NONBLOCK);
+	if (ret != 0) {
+		usbi_dbg("Failed to set non-blocking on new pipe: %d", errno);
+		goto err_close_pipe;
+	}
+
+	return 0;
+
+err_close_pipe:
+	usbi_close(pipefd[0]);
+	usbi_close(pipefd[1]);
+	return ret;
+}