--- /dev/null
+/*
+ * 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 <config.h>
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <stdlib.h>
+
+#include "libusbi.h"
+
+int usbi_pipe(int pipefd[2])
+{
+#if defined(HAVE_PIPE2)
+ int ret = pipe2(pipefd, O_CLOEXEC);
+#else
+ int ret = pipe(pipefd);
+#endif
+
+ if (ret != 0) {
+ usbi_err(NULL, "failed to create pipe (%d)", errno);
+ return ret;
+ }
+
+#if !defined(HAVE_PIPE2) && defined(FD_CLOEXEC)
+ ret = fcntl(pipefd[0], F_GETFD);
+ if (ret == -1) {
+ usbi_err(NULL, "failed to get pipe fd flags (%d)", errno);
+ goto err_close_pipe;
+ }
+ ret = fcntl(pipefd[0], F_SETFD, ret | FD_CLOEXEC);
+ if (ret == -1) {
+ usbi_err(NULL, "failed to set pipe fd flags (%d)", errno);
+ goto err_close_pipe;
+ }
+
+ ret = fcntl(pipefd[1], F_GETFD);
+ if (ret == -1) {
+ usbi_err(NULL, "failed to get pipe fd flags (%d)", errno);
+ goto err_close_pipe;
+ }
+ ret = fcntl(pipefd[1], F_SETFD, ret | FD_CLOEXEC);
+ if (ret == -1) {
+ usbi_err(NULL, "failed to set pipe fd flags (%d)", errno);
+ goto err_close_pipe;
+ }
+#endif
+
+ ret = fcntl(pipefd[1], F_GETFL);
+ if (ret == -1) {
+ usbi_err(NULL, "failed to get pipe fd status flags (%d)", errno);
+ goto err_close_pipe;
+ }
+ ret = fcntl(pipefd[1], F_SETFL, ret | O_NONBLOCK);
+ if (ret == -1) {
+ usbi_err(NULL, "failed to set pipe fd status flags (%d)", errno);
+ goto err_close_pipe;
+ }
+
+ return 0;
+
+err_close_pipe:
+ close(pipefd[0]);
+ close(pipefd[1]);
+ return ret;
+}