Add sigmask parameter to io_uring_enter

Update liburing and io_uring_enter.2 to match the kernel.

Signed-off-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

src/liburing.h

@@ -2,6 +2,7 @@
 #define LIB_URING_H
 
 #include <sys/uio.h>
+#include <signal.h>
 #include "compat.h"
 #include "io_uring.h"
 
@@ -46,7 +47,7 @@ struct io_uring {
  */
 extern int io_uring_setup(unsigned entries, struct io_uring_params *p);
 extern int io_uring_enter(unsigned fd, unsigned to_submit,
-	unsigned min_complete, unsigned flags);
+	unsigned min_complete, unsigned flags, sigset_t *sig, size_t sigsz);
 extern int io_uring_register(int fd, unsigned int opcode, void *arg,
 	unsigned int nr_args);