1 files changed, 79 insertions, 0 deletions
diff --git a/test/syscalls/linux/sigaction.cc b/test/syscalls/linux/sigaction.cc
new file mode 100644
index 000000000..9d9dd57a8
--- /dev/null
+++ b/test/syscalls/linux/sigaction.cc
@@ -0,0 +1,79 @@
+// 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 <sys/syscall.h>
+
+#include "gtest/gtest.h"
+#include "test/util/test_util.h"
+
+namespace gvisor {
+namespace testing {
+
+namespace {
+
+TEST(SigactionTest, GetLessThanOrEqualToZeroFails) {
+  struct sigaction act = {};
+  ASSERT_THAT(sigaction(-1, nullptr, &act), SyscallFailsWithErrno(EINVAL));
+  ASSERT_THAT(sigaction(0, nullptr, &act), SyscallFailsWithErrno(EINVAL));
+}
+
+TEST(SigactionTest, SetLessThanOrEqualToZeroFails) {
+  struct sigaction act = {};
+  ASSERT_THAT(sigaction(0, &act, nullptr), SyscallFailsWithErrno(EINVAL));
+  ASSERT_THAT(sigaction(0, &act, nullptr), SyscallFailsWithErrno(EINVAL));
+}
+
+TEST(SigactionTest, GetGreaterThanMaxFails) {
+  struct sigaction act = {};
+  ASSERT_THAT(sigaction(SIGRTMAX + 1, nullptr, &act),
+              SyscallFailsWithErrno(EINVAL));
+}
+
+TEST(SigactionTest, SetGreaterThanMaxFails) {
+  struct sigaction act = {};
+  ASSERT_THAT(sigaction(SIGRTMAX + 1, &act, nullptr),
+              SyscallFailsWithErrno(EINVAL));
+}
+
+TEST(SigactionTest, SetSigkillFails) {
+  struct sigaction act = {};
+  ASSERT_THAT(sigaction(SIGKILL, nullptr, &act), SyscallSucceeds());
+  ASSERT_THAT(sigaction(SIGKILL, &act, nullptr), SyscallFailsWithErrno(EINVAL));
+}
+
+TEST(SigactionTest, SetSigstopFails) {
+  struct sigaction act = {};
+  ASSERT_THAT(sigaction(SIGSTOP, nullptr, &act), SyscallSucceeds());
+  ASSERT_THAT(sigaction(SIGSTOP, &act, nullptr), SyscallFailsWithErrno(EINVAL));
+}
+
+TEST(SigactionTest, BadSigsetFails) {
+  constexpr size_t kWrongSigSetSize = 43;
+
+  struct sigaction act = {};
+
+  // The syscall itself (rather than the libc wrapper) takes the sigset_t size.
+  ASSERT_THAT(
+      syscall(SYS_rt_sigaction, SIGTERM, nullptr, &act, kWrongSigSetSize),
+      SyscallFailsWithErrno(EINVAL));
+  ASSERT_THAT(
+      syscall(SYS_rt_sigaction, SIGTERM, &act, nullptr, kWrongSigSetSize),
+      SyscallFailsWithErrno(EINVAL));
+}
+
+}  // namespace
+
+}  // namespace testing
+}  // namespace gvisor