//===-- Linux implementation of getrandom ---------------------------------===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// #include "src/sys/random/getrandom.h" #include "src/__support/OSUtil/syscall.h" // For internal syscall function. #include "src/__support/common.h" #include "src/__support/macros/config.h" #include "src/errno/libc_errno.h" #include // For syscall numbers. namespace LIBC_NAMESPACE_DECL { LLVM_LIBC_FUNCTION(ssize_t, getrandom, (void *buf, size_t buflen, unsigned int flags)) { ssize_t ret = LIBC_NAMESPACE::syscall_impl(SYS_getrandom, buf, buflen, flags); if (ret < 0) { libc_errno = static_cast(-ret); return -1; } return ret; } } // namespace LIBC_NAMESPACE_DECL