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-rw-r--r--test/syscalls/linux/alarm.cc192
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diff --git a/test/syscalls/linux/alarm.cc b/test/syscalls/linux/alarm.cc
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index 940c97285..000000000
--- a/test/syscalls/linux/alarm.cc
+++ /dev/null
@@ -1,192 +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 <signal.h>
-#include <unistd.h>
-
-#include "gtest/gtest.h"
-#include "absl/time/clock.h"
-#include "absl/time/time.h"
-#include "test/util/file_descriptor.h"
-#include "test/util/logging.h"
-#include "test/util/signal_util.h"
-#include "test/util/test_util.h"
-#include "test/util/thread_util.h"
-
-namespace gvisor {
-namespace testing {
-
-namespace {
-
-// N.B. Below, main blocks SIGALRM. Test cases must unblock it if they want
-// delivery.
-
-void do_nothing_handler(int sig, siginfo_t* siginfo, void* arg) {}
-
-// No random save as the test relies on alarm timing. Cooperative save tests
-// already cover the save between alarm and read.
-TEST(AlarmTest, Interrupt_NoRandomSave) {
- int pipe_fds[2];
- ASSERT_THAT(pipe(pipe_fds), SyscallSucceeds());
-
- FileDescriptor read_fd(pipe_fds[0]);
- FileDescriptor write_fd(pipe_fds[1]);
-
- // Use a signal handler that interrupts but does nothing rather than using the
- // default terminate action.
- struct sigaction sa;
- sa.sa_sigaction = do_nothing_handler;
- sigfillset(&sa.sa_mask);
- sa.sa_flags = 0;
- auto sa_cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGALRM, sa));
-
- // Actually allow SIGALRM delivery.
- auto mask_cleanup =
- ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_UNBLOCK, SIGALRM));
-
- // Alarm in 20 second, which should be well after read blocks below.
- ASSERT_THAT(alarm(20), SyscallSucceeds());
-
- char buf;
- ASSERT_THAT(read(read_fd.get(), &buf, 1), SyscallFailsWithErrno(EINTR));
-}
-
-/* Count of the number of SIGALARMS handled. */
-static volatile int alarms_received = 0;
-
-void inc_alarms_handler(int sig, siginfo_t* siginfo, void* arg) {
- alarms_received++;
-}
-
-// No random save as the test relies on alarm timing. Cooperative save tests
-// already cover the save between alarm and read.
-TEST(AlarmTest, Restart_NoRandomSave) {
- alarms_received = 0;
-
- int pipe_fds[2];
- ASSERT_THAT(pipe(pipe_fds), SyscallSucceeds());
-
- FileDescriptor read_fd(pipe_fds[0]);
- // Write end closed by thread below.
-
- struct sigaction sa;
- sa.sa_sigaction = inc_alarms_handler;
- sigfillset(&sa.sa_mask);
- sa.sa_flags = SA_RESTART;
- auto sa_cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGALRM, sa));
-
- // Spawn a thread to eventually unblock the read below.
- ScopedThread t([pipe_fds] {
- absl::SleepFor(absl::Seconds(30));
- EXPECT_THAT(close(pipe_fds[1]), SyscallSucceeds());
- });
-
- // Actually allow SIGALRM delivery.
- auto mask_cleanup =
- ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_UNBLOCK, SIGALRM));
-
- // Alarm in 20 second, which should be well after read blocks below, but
- // before it returns.
- ASSERT_THAT(alarm(20), SyscallSucceeds());
-
- // Read and eventually get an EOF from the writer closing. If SA_RESTART
- // didn't work, then the alarm would not have fired and we wouldn't increment
- // our alarms_received count in our signal handler, or we would have not
- // restarted the syscall gracefully, which we expect below in order to be
- // able to get the final EOF on the pipe.
- char buf;
- ASSERT_THAT(read(read_fd.get(), &buf, 1), SyscallSucceeds());
- EXPECT_EQ(alarms_received, 1);
-
- t.Join();
-}
-
-// No random save as the test relies on alarm timing. Cooperative save tests
-// already cover the save between alarm and pause.
-TEST(AlarmTest, SaSiginfo_NoRandomSave) {
- // Use a signal handler that interrupts but does nothing rather than using the
- // default terminate action.
- struct sigaction sa;
- sa.sa_sigaction = do_nothing_handler;
- sigfillset(&sa.sa_mask);
- sa.sa_flags = SA_SIGINFO;
- auto sa_cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGALRM, sa));
-
- // Actually allow SIGALRM delivery.
- auto mask_cleanup =
- ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_UNBLOCK, SIGALRM));
-
- // Alarm in 20 second, which should be well after pause blocks below.
- ASSERT_THAT(alarm(20), SyscallSucceeds());
- ASSERT_THAT(pause(), SyscallFailsWithErrno(EINTR));
-}
-
-// No random save as the test relies on alarm timing. Cooperative save tests
-// already cover the save between alarm and pause.
-TEST(AlarmTest, SaInterrupt_NoRandomSave) {
- // Use a signal handler that interrupts but does nothing rather than using the
- // default terminate action.
- struct sigaction sa;
- sa.sa_sigaction = do_nothing_handler;
- sigfillset(&sa.sa_mask);
- sa.sa_flags = SA_INTERRUPT;
- auto sa_cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGALRM, sa));
-
- // Actually allow SIGALRM delivery.
- auto mask_cleanup =
- ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_UNBLOCK, SIGALRM));
-
- // Alarm in 20 second, which should be well after pause blocks below.
- ASSERT_THAT(alarm(20), SyscallSucceeds());
- ASSERT_THAT(pause(), SyscallFailsWithErrno(EINTR));
-}
-
-TEST(AlarmTest, UserModeSpinning) {
- alarms_received = 0;
-
- struct sigaction sa = {};
- sa.sa_sigaction = inc_alarms_handler;
- sigfillset(&sa.sa_mask);
- sa.sa_flags = SA_SIGINFO;
- auto sa_cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGALRM, sa));
-
- // Actually allow SIGALRM delivery.
- auto mask_cleanup =
- ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_UNBLOCK, SIGALRM));
-
- // Alarm in 20 second, which should be well into the loop below.
- ASSERT_THAT(alarm(20), SyscallSucceeds());
- // Make sure that the signal gets delivered even if we are spinning in user
- // mode when it arrives.
- while (!alarms_received) {
- }
-}
-
-} // namespace
-
-} // namespace testing
-} // namespace gvisor
-
-int main(int argc, char** argv) {
- // These tests depend on delivering SIGALRM to the main thread. Block SIGALRM
- // so that any other threads created by TestInit will also have SIGALRM
- // blocked.
- sigset_t set;
- sigemptyset(&set);
- sigaddset(&set, SIGALRM);
- TEST_PCHECK(sigprocmask(SIG_BLOCK, &set, nullptr) == 0);
-
- gvisor::testing::TestInit(&argc, &argv);
- return gvisor::testing::RunAllTests();
-}