Add basic helpers for file/buffer registration

Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 60 insertions, 0 deletions

diff --git a/src/register.c b/src/register.c
new file mode 100644
index 0000000..e352291
--- /dev/null
+++ b/src/register.c
@@ -0,0 +1,60 @@
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+
+#include "compat.h"
+#include "io_uring.h"
+#include "liburing.h"
+
+int io_uring_register_buffers(struct io_uring *ring, struct iovec *iovecs,
+			      unsigned nr_iovecs)
+{
+	int ret;
+
+	ret = io_uring_register(ring->ring_fd, IORING_REGISTER_BUFFERS,
+				iovecs, nr_iovecs);
+	if (ret < 0)
+		return -errno;
+
+	return 0;
+}
+
+int io_uring_unregister_buffers(struct io_uring *ring)
+{
+	int ret;
+
+	ret = io_uring_register(ring->ring_fd, IORING_UNREGISTER_BUFFERS, NULL,
+				0);
+	if (ret < 0)
+		return -errno;
+
+	return 0;
+}
+
+int io_uring_register_files(struct io_uring *ring, __s32 *files,
+			      unsigned nr_files)
+{
+	int ret;
+
+	ret = io_uring_register(ring->ring_fd, IORING_REGISTER_FILES, files,
+				nr_files);
+	if (ret < 0)
+		return -errno;
+
+	return 0;
+}
+
+int io_uring_unregister_files(struct io_uring *ring)
+{
+	int ret;
+
+	ret = io_uring_register(ring->ring_fd, IORING_UNREGISTER_FILES, NULL,
+				0);
+	if (ret < 0)
+		return -errno;
+
+	return 0;
+}