memcheck/tests/freebsd/bug470713.cpp

   1 // roughly based on the code for Firefox class BinaryPath
   2 // https://searchfox.org/mozilla-central/source/xpcom/build/BinaryPath.h#185
   3
   4 #include <iostream>
   5 #include <sys/types.h>
   6 #include <sys/sysctl.h>
   7 #include <limits.h>
   8 #include <string>
   9 #include <memory>
  10
  11 using std::cerr;
  12 using std::cout;
  13 using std::string;
  14
  15 int main(int argc, char **argv)
  16 {
  17    int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1};
  18    size_t len;
  19
  20    if (sysctl(mib, 4, NULL, &len, NULL, 0) != 0) {
  21       cout << "sysctl failed to get path length: " << strerror(errno) << '\n';
  22       return -1;
  23    }
  24
  25    std::unique_ptr<char[]> aResult(new char[len]);
  26
  27    if (sysctl(mib, 4, aResult.get(), &len, NULL, 0) != 0)  {
  28       cout << "sysctl failed to get path: " << strerror(errno) << '\n';
  29       return -1;
  30    }
  31
  32    if (string(aResult.get()) == argv[1]) {
  33       cout << "OK\n";
  34    } else {
  35       cout << "Not OK aResult " << aResult << " argv[1] " << argv[1] << '\n';
  36    }
  37
  38    if (sysctl(mib, 4, NULL, NULL, NULL, 0) != -1) {
  39       cout << "OK syscall failed\n";
  40       return -1;
  41    } else {
  42       cout << "sysctl succeeded when it should have failed\n";
  43    }
  44 }
  45