github.com/SagerNet/gvisor@v0.0.0-20210707092255-7731c139d75c/test/syscalls/linux/bad.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 <sys/syscall.h>
    16  #include <unistd.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  #ifdef __x86_64__
    26  // get_kernel_syms is not supported in Linux > 2.6, and not implemented in
    27  // gVisor.
    28  constexpr uint32_t kNotImplementedSyscall = SYS_get_kernel_syms;
    29  #elif __aarch64__
    30  // Use the last of arch_specific_syscalls which are not implemented on arm64.
    31  constexpr uint32_t kNotImplementedSyscall = __NR_arch_specific_syscall + 15;
    32  #endif
    33  
    34  TEST(BadSyscallTest, NotImplemented) {
    35    EXPECT_THAT(syscall(kNotImplementedSyscall), SyscallFailsWithErrno(ENOSYS));
    36  }
    37  
    38  TEST(BadSyscallTest, NegativeOne) {
    39    EXPECT_THAT(syscall(-1), SyscallFailsWithErrno(ENOSYS));
    40  }
    41  
    42  }  // namespace
    43  
    44  }  // namespace testing
    45  }  // namespace gvisor