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Diffstat (limited to 'test/syscalls/linux/getrandom.cc')
-rw-r--r-- | test/syscalls/linux/getrandom.cc | 63 |
1 files changed, 0 insertions, 63 deletions
diff --git a/test/syscalls/linux/getrandom.cc b/test/syscalls/linux/getrandom.cc deleted file mode 100644 index f87cdd7a1..000000000 --- a/test/syscalls/linux/getrandom.cc +++ /dev/null @@ -1,63 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <sys/syscall.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -#ifndef SYS_getrandom -#if defined(__x86_64__) -#define SYS_getrandom 318 -#elif defined(__i386__) -#define SYS_getrandom 355 -#elif defined(__aarch64__) -#define SYS_getrandom 278 -#else -#error "Unknown architecture" -#endif -#endif // SYS_getrandom - -bool SomeByteIsNonZero(char* random_bytes, int length) { - for (int i = 0; i < length; i++) { - if (random_bytes[i] != 0) { - return true; - } - } - return false; -} - -TEST(GetrandomTest, IsRandom) { - // This test calls get_random and makes sure that the array is filled in with - // something that is non-zero. Perhaps we get back \x00\x00\x00\x00\x00.... as - // a random result, but it's so unlikely that we'll just ignore this. - char random_bytes[64] = {}; - int n = syscall(SYS_getrandom, random_bytes, 64, 0); - SKIP_IF(!IsRunningOnGvisor() && n < 0 && errno == ENOSYS); - EXPECT_THAT(n, SyscallSucceeds()); - EXPECT_GT(n, 0); // Some bytes should be returned. - EXPECT_TRUE(SomeByteIsNonZero(random_bytes, n)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor |