Add FreeBSD compat layer for splice and sync_file_range

[lttng-tools.git] / src / common / compat / fcntl.h

diff --git a/src/common/compat/fcntl.h b/src/common/compat/fcntl.h
new file mode 100644 (file)
index 0000000..4205469
--- /dev/null
+++ b/src/common/compat/fcntl.h
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2011 - David Goulet <dgoulet@efficios.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; only version 2 of the License.
+ *
+ * This program 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 General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#ifndef _COMPAT_FCNTL_H
+#define _COMPAT_FCNTL_H
+
+#include <fcntl.h>
+
+#define lttng_sync_file_range(fd, offset, nbytes, flags) \
+       compat_sync_file_range(fd, offset, nbytes, flags)
+
+#ifdef __linux__
+
+int compat_sync_file_range(int fd, off64_t offset, off64_t nbytes,
+               unsigned int flags)
+{
+       return sync_file_range(fd, offset, nbytes, flags);
+}
+
+#elif __FreeBSD__
+
+/*
+ * Possible flags under Linux. Simply nullify them and avoid wrapper.
+ */
+#define SYNC_FILE_RANGE_WAIT_AFTER    0
+#define SYNC_FILE_RANGE_WAIT_BEFORE   0
+#define SYNC_FILE_RANGE_WRITE         0
+
+typedef long int off64_t;
+typedef off64_t loff_t;
+
+int compat_sync_file_range(int fd, off64_t offset, off64_t nbytes,
+               unsigned int flags)
+{
+       return 0;
+}
+
+/*
+ * Possible flags under Linux. Simply nullify them and avoid wrappers.
+ */
+#define SPLICE_F_MOVE       0
+#define SPLICE_F_NONBLOCK   0
+#define SPLICE_F_MORE       0
+#define SPLICE_F_GIFT       0
+
+ssize_t splice(int fd_in, loff_t *off_in, int fd_out,
+               loff_t *off_out, size_t len, unsigned int flags)
+{
+       return -ENOSYS;
+}
+
+#else
+#error "Please add support for your OS into compat/fcntl.h."
+#endif /* __linux__ , __FreeBSD__ */
+
+#endif /* _COMPAT_FCNTL_H */