1 // SPDX-License-Identifier: GPL-2.0
2
3 #include <asm/facility.h>
4 #include <uapi/asm-generic/errno.h>
5 #include "vdso.h"
6
7 ssize_t __kernel_getrandom(void *buffer, size_t len, unsigned int flags, void *opaque_state, size_t opaque_len)
8 {
9 if (test_facility(129))
10 return __cvdso_getrandom(buffer, len, flags, opaque_state, opaque_len);
11 if (unlikely(opaque_len == ~0UL && !buffer && !len && !flags))
12 return -ENOSYS;
13 return getrandom_syscall(buffer, len, flags);
14 }
15
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