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Add error code tests for mremap syscall

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This commit is contained in:
Ruihan Li
2025-06-21 23:58:18 +08:00
committed by Jianfeng Jiang
parent ee542e043e
commit 6af39b2d30
1 changed files with 38 additions and 0 deletions
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38
test/apps/mmap/mmap_and_mremap.c
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@ -10,6 +10,44 @@
#define PAGE_SIZE 4096
FN_TEST(mremap)
{
char *addr = TEST_SUCC(mmap(NULL, 3 * PAGE_SIZE, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0));
TEST_SUCC(munmap(addr + 2 * PAGE_SIZE, PAGE_SIZE));
// The old address is not page-aligned.
TEST_ERRNO(mremap(addr + 1, PAGE_SIZE, PAGE_SIZE, 0), EINVAL);
// The old size or the new size is not page-aligned.
TEST_RES(mremap(addr, 1, PAGE_SIZE, 0), _ret == addr);
TEST_RES(mremap(addr, PAGE_SIZE, 1, 0), _ret == addr);
// The new address is not page-aligned.
TEST_ERRNO(mremap(addr, PAGE_SIZE, PAGE_SIZE,
MREMAP_MAYMOVE | MREMAP_FIXED,
addr + 2 * PAGE_SIZE + 1),
EINVAL);
// The flags or the combination of the flags is invalid.
TEST_ERRNO(mremap(addr, PAGE_SIZE, PAGE_SIZE, MREMAP_FIXED,
addr + 2 * PAGE_SIZE),
EINVAL);
TEST_ERRNO(mremap(addr, PAGE_SIZE, PAGE_SIZE, ~0, addr + 2 * PAGE_SIZE),
EINVAL);
// Copying a private mapping should not be allowed. See the "BUGS" section at
// <https://man7.org/linux/man-pages/man2/mremap.2.html>.
TEST_ERRNO(mremap(addr, 0, PAGE_SIZE, 0), EINVAL);
// There is no enough room to expand the mapping.
// FIXME: Asterinas returns EACCESS here, which is not a correct error code.
// TEST_ERRNO(mremap(addr, PAGE_SIZE, 2 * PAGE_SIZE, 0), ENOMEM);
TEST_SUCC(munmap(addr, 2 * PAGE_SIZE));
}
END_TEST()
const char *content = "kjfkljk*wigo&h";
#define CHECK_MM(func) CHECK_WITH(func, _ret != MAP_FAILED)