gvisor.dev/gvisor@v0.0.0-20240520182842-f9d4d51c7e0f/test/syscalls/linux/exec_proc_exe_workload.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 <stdlib.h>
    16  #include <unistd.h>
    17  
    18  #include <iostream>
    19  
    20  #include "test/util/fs_util.h"
    21  #include "test/util/posix_error.h"
    22  
    23  int main(int argc, char** argv, char** envp) {
    24    // This is annoying. Because remote build systems may put these binaries
    25    // in a content-addressable-store, you may wind up with /proc/self/exe
    26    // pointing to some random path (but with a sensible argv[0]).
    27    //
    28    // Therefore, this test simply checks that the /proc/self/exe
    29    // is absolute and *doesn't* match argv[1].
    30    std::string exe =
    31        gvisor::testing::ProcessExePath(getpid()).ValueOrDie();
    32    if (exe[0] != '/') {
    33      std::cerr << "relative path: " << exe << std::endl;
    34      exit(1);
    35    }
    36    if (exe.find(argv[1]) != std::string::npos) {
    37      std::cerr << "matching path: " << exe << std::endl;
    38      exit(1);
    39    }
    40  
    41    return 0;
    42  }