1 files changed, 0 insertions, 424 deletions
diff --git a/test/syscalls/linux/aio.cc b/test/syscalls/linux/aio.cc
deleted file mode 100644
index b27d4e10a..000000000
--- a/test/syscalls/linux/aio.cc
+++ /dev/null
@@ -1,424 +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 <fcntl.h>
-#include <linux/aio_abi.h>
-#include <sys/mman.h>
-#include <sys/syscall.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <algorithm>
-#include <string>
-
-#include "gtest/gtest.h"
-#include "test/syscalls/linux/file_base.h"
-#include "test/util/cleanup.h"
-#include "test/util/file_descriptor.h"
-#include "test/util/fs_util.h"
-#include "test/util/memory_util.h"
-#include "test/util/posix_error.h"
-#include "test/util/proc_util.h"
-#include "test/util/temp_path.h"
-#include "test/util/test_util.h"
-
-using ::testing::_;
-
-namespace gvisor {
-namespace testing {
-namespace {
-
-// Returns the size of the VMA containing the given address.
-PosixErrorOr<size_t> VmaSizeAt(uintptr_t addr) {
-  ASSIGN_OR_RETURN_ERRNO(std::string proc_self_maps,
-                         GetContents("/proc/self/maps"));
-  ASSIGN_OR_RETURN_ERRNO(auto entries, ParseProcMaps(proc_self_maps));
-  // Use binary search to find the first VMA that might contain addr.
-  ProcMapsEntry target = {};
-  target.end = addr;
-  auto it =
-      std::upper_bound(entries.begin(), entries.end(), target,
-                       [](const ProcMapsEntry& x, const ProcMapsEntry& y) {
-                         return x.end < y.end;
-                       });
-  // Check that it actually contains addr.
-  if (it == entries.end() || addr < it->start) {
-    return PosixError(ENOENT, absl::StrCat("no VMA contains address ", addr));
-  }
-  return it->end - it->start;
-}
-
-constexpr char kData[] = "hello world!";
-
-int SubmitCtx(aio_context_t ctx, long nr, struct iocb** iocbpp) {
-  return syscall(__NR_io_submit, ctx, nr, iocbpp);
-}
-
-class AIOTest : public FileTest {
- public:
-  AIOTest() : ctx_(0) {}
-
-  int SetupContext(unsigned int nr) {
-    return syscall(__NR_io_setup, nr, &ctx_);
-  }
-
-  int Submit(long nr, struct iocb** iocbpp) {
-    return SubmitCtx(ctx_, nr, iocbpp);
-  }
-
-  int GetEvents(long min, long max, struct io_event* events,
-                struct timespec* timeout) {
-    return RetryEINTR(syscall)(__NR_io_getevents, ctx_, min, max, events,
-                               timeout);
-  }
-
-  int DestroyContext() { return syscall(__NR_io_destroy, ctx_); }
-
-  void TearDown() override {
-    FileTest::TearDown();
-    if (ctx_ != 0) {
-      ASSERT_THAT(DestroyContext(), SyscallSucceeds());
-    }
-  }
-
-  struct iocb CreateCallback() {
-    struct iocb cb = {};
-    cb.aio_data = 0x123;
-    cb.aio_fildes = test_file_fd_.get();
-    cb.aio_lio_opcode = IOCB_CMD_PWRITE;
-    cb.aio_buf = reinterpret_cast<uint64_t>(kData);
-    cb.aio_offset = 0;
-    cb.aio_nbytes = strlen(kData);
-    return cb;
-  }
-
- protected:
-  aio_context_t ctx_;
-};
-
-TEST_F(AIOTest, BasicWrite) {
-  // Copied from fs/aio.c.
-  constexpr unsigned AIO_RING_MAGIC = 0xa10a10a1;
-  struct aio_ring {
-    unsigned id;
-    unsigned nr;
-    unsigned head;
-    unsigned tail;
-    unsigned magic;
-    unsigned compat_features;
-    unsigned incompat_features;
-    unsigned header_length;
-    struct io_event io_events[0];
-  };
-
-  // Setup a context that is 128 entries deep.
-  ASSERT_THAT(SetupContext(128), SyscallSucceeds());
-
-  // Check that 'ctx_' points to a valid address. libaio uses it to check if
-  // aio implementation uses aio_ring. gVisor doesn't and returns all zeroes.
-  // Linux implements aio_ring, so skip the zeroes check.
-  //
-  // TODO(b/65486370): Remove when gVisor implements aio_ring.
-  auto ring = reinterpret_cast<struct aio_ring*>(ctx_);
-  auto magic = IsRunningOnGvisor() ? 0 : AIO_RING_MAGIC;
-  EXPECT_EQ(ring->magic, magic);
-
-  struct iocb cb = CreateCallback();
-  struct iocb* cbs[1] = {&cb};
-
-  // Submit the request.
-  ASSERT_THAT(Submit(1, cbs), SyscallSucceedsWithValue(1));
-
-  // Get the reply.
-  struct io_event events[1];
-  ASSERT_THAT(GetEvents(1, 1, events, nullptr), SyscallSucceedsWithValue(1));
-
-  // Verify that it is as expected.
-  EXPECT_EQ(events[0].data, 0x123);
-  EXPECT_EQ(events[0].obj, reinterpret_cast<long>(&cb));
-  EXPECT_EQ(events[0].res, strlen(kData));
-
-  // Verify that the file contains the contents.
-  char verify_buf[sizeof(kData)] = {};
-  ASSERT_THAT(read(test_file_fd_.get(), verify_buf, sizeof(kData)),
-              SyscallSucceedsWithValue(strlen(kData)));
-  EXPECT_STREQ(verify_buf, kData);
-}
-
-TEST_F(AIOTest, BadWrite) {
-  // Create a pipe and immediately close the read end.
-  int pipefd[2];
-  ASSERT_THAT(pipe(pipefd), SyscallSucceeds());
-
-  FileDescriptor rfd(pipefd[0]);
-  FileDescriptor wfd(pipefd[1]);
-
-  rfd.reset();  // Close the read end.
-
-  // Setup a context that is 128 entries deep.
-  ASSERT_THAT(SetupContext(128), SyscallSucceeds());
-
-  struct iocb cb = CreateCallback();
-  // Try to write to the read end.
-  cb.aio_fildes = wfd.get();
-  struct iocb* cbs[1] = {&cb};
-
-  // Submit the request.
-  ASSERT_THAT(Submit(1, cbs), SyscallSucceedsWithValue(1));
-
-  // Get the reply.
-  struct io_event events[1];
-  ASSERT_THAT(GetEvents(1, 1, events, nullptr), SyscallSucceedsWithValue(1));
-
-  // Verify that it fails with the right error code.
-  EXPECT_EQ(events[0].data, 0x123);
-  EXPECT_EQ(events[0].obj, reinterpret_cast<uint64_t>(&cb));
-  EXPECT_LT(events[0].res, 0);
-}
-
-TEST_F(AIOTest, ExitWithPendingIo) {
-  // Setup a context that is 5 entries deep.
-  ASSERT_THAT(SetupContext(5), SyscallSucceeds());
-
-  struct iocb cb = CreateCallback();
-  struct iocb* cbs[] = {&cb};
-
-  // Submit a request but don't complete it to make it pending.
-  EXPECT_THAT(Submit(1, cbs), SyscallSucceeds());
-}
-
-int Submitter(void* arg) {
-  auto test = reinterpret_cast<AIOTest*>(arg);
-
-  struct iocb cb = test->CreateCallback();
-  struct iocb* cbs[1] = {&cb};
-
-  // Submit the request.
-  TEST_CHECK(test->Submit(1, cbs) == 1);
-  return 0;
-}
-
-TEST_F(AIOTest, CloneVm) {
-  // Setup a context that is 128 entries deep.
-  ASSERT_THAT(SetupContext(128), SyscallSucceeds());
-
-  const size_t kStackSize = 5 * kPageSize;
-  std::unique_ptr<char[]> stack(new char[kStackSize]);
-  char* bp = stack.get() + kStackSize;
-  pid_t child;
-  ASSERT_THAT(child = clone(Submitter, bp, CLONE_VM | SIGCHLD,
-                            reinterpret_cast<void*>(this)),
-              SyscallSucceeds());
-
-  // Get the reply.
-  struct io_event events[1];
-  ASSERT_THAT(GetEvents(1, 1, events, nullptr), SyscallSucceedsWithValue(1));
-
-  // Verify that it is as expected.
-  EXPECT_EQ(events[0].data, 0x123);
-  EXPECT_EQ(events[0].res, strlen(kData));
-
-  // Verify that the file contains the contents.
-  char verify_buf[32] = {};
-  ASSERT_THAT(read(test_file_fd_.get(), &verify_buf[0], strlen(kData)),
-              SyscallSucceeds());
-  EXPECT_EQ(strcmp(kData, &verify_buf[0]), 0);
-
-  int status;
-  ASSERT_THAT(RetryEINTR(waitpid)(child, &status, 0),
-              SyscallSucceedsWithValue(child));
-  EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0)
-      << " status " << status;
-}
-
-// Tests that AIO context can be remapped to a different address.
-TEST_F(AIOTest, Mremap) {
-  // Setup a context that is 128 entries deep.
-  ASSERT_THAT(SetupContext(128), SyscallSucceeds());
-  const size_t ctx_size =
-      ASSERT_NO_ERRNO_AND_VALUE(VmaSizeAt(reinterpret_cast<uintptr_t>(ctx_)));
-
-  struct iocb cb = CreateCallback();
-  struct iocb* cbs[1] = {&cb};
-
-  // Reserve address space for the mremap target so we have something safe to
-  // map over.
-  Mapping dst =
-      ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(ctx_size, PROT_READ, MAP_PRIVATE));
-
-  // Remap context 'handle' to a different address.
-  ASSERT_THAT(Mremap(reinterpret_cast<void*>(ctx_), ctx_size, dst.len(),
-                     MREMAP_FIXED | MREMAP_MAYMOVE, dst.ptr()),
-              IsPosixErrorOkAndHolds(dst.ptr()));
-  aio_context_t old_ctx = ctx_;
-  ctx_ = reinterpret_cast<aio_context_t>(dst.addr());
-  // io_destroy() will unmap dst now.
-  dst.release();
-
-  // Check that submitting the request with the old 'ctx_' fails.
-  ASSERT_THAT(SubmitCtx(old_ctx, 1, cbs), SyscallFailsWithErrno(EINVAL));
-
-  // Submit the request with the new 'ctx_'.
-  ASSERT_THAT(Submit(1, cbs), SyscallSucceedsWithValue(1));
-
-  // Remap again.
-  dst = ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(ctx_size, PROT_READ, MAP_PRIVATE));
-  ASSERT_THAT(Mremap(reinterpret_cast<void*>(ctx_), ctx_size, dst.len(),
-                     MREMAP_FIXED | MREMAP_MAYMOVE, dst.ptr()),
-              IsPosixErrorOkAndHolds(dst.ptr()));
-  ctx_ = reinterpret_cast<aio_context_t>(dst.addr());
-  dst.release();
-
-  // Get the reply with yet another 'ctx_' and verify it.
-  struct io_event events[1];
-  ASSERT_THAT(GetEvents(1, 1, events, nullptr), SyscallSucceedsWithValue(1));
-  EXPECT_EQ(events[0].data, 0x123);
-  EXPECT_EQ(events[0].obj, reinterpret_cast<long>(&cb));
-  EXPECT_EQ(events[0].res, strlen(kData));
-
-  // Verify that the file contains the contents.
-  char verify_buf[sizeof(kData)] = {};
-  ASSERT_THAT(read(test_file_fd_.get(), verify_buf, sizeof(kData)),
-              SyscallSucceedsWithValue(strlen(kData)));
-  EXPECT_STREQ(verify_buf, kData);
-}
-
-// Tests that AIO context cannot be expanded with mremap.
-TEST_F(AIOTest, MremapExpansion) {
-  // Setup a context that is 128 entries deep.
-  ASSERT_THAT(SetupContext(128), SyscallSucceeds());
-  const size_t ctx_size =
-      ASSERT_NO_ERRNO_AND_VALUE(VmaSizeAt(reinterpret_cast<uintptr_t>(ctx_)));
-
-  // Reserve address space for the mremap target so we have something safe to
-  // map over.
-  Mapping dst = ASSERT_NO_ERRNO_AND_VALUE(
-      MmapAnon(ctx_size + kPageSize, PROT_NONE, MAP_PRIVATE));
-
-  // Test that remapping to a larger address range fails.
-  ASSERT_THAT(Mremap(reinterpret_cast<void*>(ctx_), ctx_size, dst.len(),
-                     MREMAP_FIXED | MREMAP_MAYMOVE, dst.ptr()),
-              PosixErrorIs(EFAULT, _));
-
-  // mm/mremap.c:sys_mremap() => mremap_to() does do_munmap() of the destination
-  // before it hits the VM_DONTEXPAND check in vma_to_resize(), so we should no
-  // longer munmap it (another thread may have created a mapping there).
-  dst.release();
-}
-
-// Tests that AIO calls fail if context's address is inaccessible.
-TEST_F(AIOTest, Mprotect) {
-  // Setup a context that is 128 entries deep.
-  ASSERT_THAT(SetupContext(128), SyscallSucceeds());
-
-  struct iocb cb = CreateCallback();
-  struct iocb* cbs[1] = {&cb};
-
-  ASSERT_THAT(Submit(1, cbs), SyscallSucceedsWithValue(1));
-
-  // Makes the context 'handle' inaccessible and check that all subsequent
-  // calls fail.
-  ASSERT_THAT(mprotect(reinterpret_cast<void*>(ctx_), kPageSize, PROT_NONE),
-              SyscallSucceeds());
-  struct io_event events[1];
-  EXPECT_THAT(GetEvents(1, 1, events, nullptr), SyscallFailsWithErrno(EINVAL));
-  ASSERT_THAT(Submit(1, cbs), SyscallFailsWithErrno(EINVAL));
-  EXPECT_THAT(DestroyContext(), SyscallFailsWithErrno(EINVAL));
-
-  // Prevent TearDown from attempting to destroy the context and fail.
-  ctx_ = 0;
-}
-
-TEST_F(AIOTest, Timeout) {
-  // Setup a context that is 128 entries deep.
-  ASSERT_THAT(SetupContext(128), SyscallSucceeds());
-
-  struct timespec timeout;
-  timeout.tv_sec = 0;
-  timeout.tv_nsec = 10;
-  struct io_event events[1];
-  ASSERT_THAT(GetEvents(1, 1, events, &timeout), SyscallSucceedsWithValue(0));
-}
-
-class AIOReadWriteParamTest : public AIOTest,
-                              public ::testing::WithParamInterface<int> {};
-
-TEST_P(AIOReadWriteParamTest, BadOffset) {
-  // Setup a context that is 128 entries deep.
-  ASSERT_THAT(SetupContext(128), SyscallSucceeds());
-
-  struct iocb cb = CreateCallback();
-  struct iocb* cbs[1] = {&cb};
-
-  // Create a buffer that we can write to.
-  char buf[] = "hello world!";
-  cb.aio_buf = reinterpret_cast<uint64_t>(buf);
-
-  // Set the operation on the callback and give a negative offset.
-  const int opcode = GetParam();
-  cb.aio_lio_opcode = opcode;
-
-  iovec iov = {};
-  if (opcode == IOCB_CMD_PREADV || opcode == IOCB_CMD_PWRITEV) {
-    // Create a valid iovec and set it in the callback.
-    iov.iov_base = reinterpret_cast<void*>(buf);
-    iov.iov_len = 1;
-    cb.aio_buf = reinterpret_cast<uint64_t>(&iov);
-    // aio_nbytes is the number of iovecs.
-    cb.aio_nbytes = 1;
-  }
-
-  // Pass a negative offset.
-  cb.aio_offset = -1;
-
-  // Should get error on submission.
-  ASSERT_THAT(Submit(1, cbs), SyscallFailsWithErrno(EINVAL));
-}
-
-INSTANTIATE_TEST_SUITE_P(BadOffset, AIOReadWriteParamTest,
-                         ::testing::Values(IOCB_CMD_PREAD, IOCB_CMD_PWRITE,
-                                           IOCB_CMD_PREADV, IOCB_CMD_PWRITEV));
-
-class AIOVectorizedParamTest : public AIOTest,
-                               public ::testing::WithParamInterface<int> {};
-
-TEST_P(AIOVectorizedParamTest, BadIOVecs) {
-  // Setup a context that is 128 entries deep.
-  ASSERT_THAT(SetupContext(128), SyscallSucceeds());
-
-  struct iocb cb = CreateCallback();
-  struct iocb* cbs[1] = {&cb};
-
-  // Modify the callback to use the operation from the param.
-  cb.aio_lio_opcode = GetParam();
-
-  // Create an iovec with address in kernel range, and pass that as the buffer.
-  iovec iov = {};
-  iov.iov_base = reinterpret_cast<void*>(0xFFFFFFFF00000000);
-  iov.iov_len = 1;
-  cb.aio_buf = reinterpret_cast<uint64_t>(&iov);
-  // aio_nbytes is the number of iovecs.
-  cb.aio_nbytes = 1;
-
-  // Should get error on submission.
-  ASSERT_THAT(Submit(1, cbs), SyscallFailsWithErrno(EFAULT));
-}
-
-INSTANTIATE_TEST_SUITE_P(BadIOVecs, AIOVectorizedParamTest,
-                         ::testing::Values(IOCB_CMD_PREADV, IOCB_CMD_PWRITEV));
-
-}  // namespace
-
-}  // namespace testing
-}  // namespace gvisor