| //===-- Unittests for mmap and munmap -------------------------------------===// |
| // |
| // 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 "include/errno.h" |
| #include "include/sys/mman.h" |
| #include "src/errno/llvmlibc_errno.h" |
| #include "src/sys/mman/mmap.h" |
| #include "src/sys/mman/munmap.h" |
| #include "test/ErrnoSetterMatcher.h" |
| #include "utils/UnitTest/Test.h" |
| |
| using __llvm_libc::testing::ErrnoSetterMatcher::Fails; |
| using __llvm_libc::testing::ErrnoSetterMatcher::Succeeds; |
| |
| TEST(LlvmLibcMMapTest, NoError) { |
| size_t alloc_size = 128; |
| llvmlibc_errno = 0; |
| void *addr = __llvm_libc::mmap(nullptr, alloc_size, PROT_READ, |
| MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); |
| EXPECT_EQ(0, llvmlibc_errno); |
| EXPECT_NE(addr, MAP_FAILED); |
| |
| int *array = reinterpret_cast<int *>(addr); |
| // Reading from the memory should not crash the test. |
| // Since we used the MAP_ANONYMOUS flag, the contents of the newly |
| // allocated memory should be initialized to zero. |
| EXPECT_EQ(array[0], 0); |
| EXPECT_THAT(__llvm_libc::munmap(addr, alloc_size), Succeeds()); |
| } |
| |
| TEST(LlvmLibcMMapTest, Error_InvalidSize) { |
| llvmlibc_errno = 0; |
| void *addr = __llvm_libc::mmap(nullptr, 0, PROT_READ, |
| MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); |
| EXPECT_THAT(addr, Fails(EINVAL, MAP_FAILED)); |
| |
| EXPECT_THAT(__llvm_libc::munmap(0, 0), Fails(EINVAL)); |
| } |