github.com/SagerNet/gvisor@v0.0.0-20210707092255-7731c139d75c/test/syscalls/linux/sigaction.cc (about)

     1  // Copyright 2018 The gVisor Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  #include <signal.h>
    16  #include <sys/syscall.h>
    17  
    18  #include "gtest/gtest.h"
    19  #include "test/util/test_util.h"
    20  
    21  namespace gvisor {
    22  namespace testing {
    23  
    24  namespace {
    25  
    26  TEST(SigactionTest, GetLessThanOrEqualToZeroFails) {
    27    struct sigaction act = {};
    28    ASSERT_THAT(sigaction(-1, nullptr, &act), SyscallFailsWithErrno(EINVAL));
    29    ASSERT_THAT(sigaction(0, nullptr, &act), SyscallFailsWithErrno(EINVAL));
    30  }
    31  
    32  TEST(SigactionTest, SetLessThanOrEqualToZeroFails) {
    33    struct sigaction act = {};
    34    ASSERT_THAT(sigaction(0, &act, nullptr), SyscallFailsWithErrno(EINVAL));
    35    ASSERT_THAT(sigaction(0, &act, nullptr), SyscallFailsWithErrno(EINVAL));
    36  }
    37  
    38  TEST(SigactionTest, GetGreaterThanMaxFails) {
    39    struct sigaction act = {};
    40    ASSERT_THAT(sigaction(SIGRTMAX + 1, nullptr, &act),
    41                SyscallFailsWithErrno(EINVAL));
    42  }
    43  
    44  TEST(SigactionTest, SetGreaterThanMaxFails) {
    45    struct sigaction act = {};
    46    ASSERT_THAT(sigaction(SIGRTMAX + 1, &act, nullptr),
    47                SyscallFailsWithErrno(EINVAL));
    48  }
    49  
    50  TEST(SigactionTest, SetSigkillFails) {
    51    struct sigaction act = {};
    52    ASSERT_THAT(sigaction(SIGKILL, nullptr, &act), SyscallSucceeds());
    53    ASSERT_THAT(sigaction(SIGKILL, &act, nullptr), SyscallFailsWithErrno(EINVAL));
    54  }
    55  
    56  TEST(SigactionTest, SetSigstopFails) {
    57    struct sigaction act = {};
    58    ASSERT_THAT(sigaction(SIGSTOP, nullptr, &act), SyscallSucceeds());
    59    ASSERT_THAT(sigaction(SIGSTOP, &act, nullptr), SyscallFailsWithErrno(EINVAL));
    60  }
    61  
    62  TEST(SigactionTest, BadSigsetFails) {
    63    constexpr size_t kWrongSigSetSize = 43;
    64  
    65    struct sigaction act = {};
    66  
    67    // The syscall itself (rather than the libc wrapper) takes the sigset_t size.
    68    ASSERT_THAT(
    69        syscall(SYS_rt_sigaction, SIGTERM, nullptr, &act, kWrongSigSetSize),
    70        SyscallFailsWithErrno(EINVAL));
    71    ASSERT_THAT(
    72        syscall(SYS_rt_sigaction, SIGTERM, &act, nullptr, kWrongSigSetSize),
    73        SyscallFailsWithErrno(EINVAL));
    74  }
    75  
    76  }  // namespace
    77  
    78  }  // namespace testing
    79  }  // namespace gvisor