Resguardo inicial

linux-7.2.3/arch/s390/kernel/vdso/vgetrandom.c

@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <asm/facility.h>
+#include <uapi/asm-generic/errno.h>
+#include "vdso.h"
+
+ssize_t __kernel_getrandom(void *buffer, size_t len, unsigned int flags, void *opaque_state, size_t opaque_len)
+{
+	if (test_facility(129))
+		return __cvdso_getrandom(buffer, len, flags, opaque_state, opaque_len);
+	if (unlikely(opaque_len == ~0UL && !buffer && !len && !flags))
+		return -ENOSYS;
+	return getrandom_syscall(buffer, len, flags);
+}