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// roughly based on the code for Firefox class BinaryPath
// https://searchfox.org/mozilla-central/source/xpcom/build/BinaryPath.h#185
#include <iostream>
#include <sys/types.h>
#include <sys/sysctl.h>
#include <limits.h>
#include <string>
#include <memory>
#include <cstring>
using std::cerr;
using std::cout;
using std::string;
int main(int argc, char **argv)
{
int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1};
size_t len;
if (sysctl(mib, 4, NULL, &len, NULL, 0) != 0) {
cout << "sysctl failed to get path length: " << std::strerror(errno) << '\n';
return -1;
}
std::unique_ptr<char[]> aResult(new char[len]);
if (sysctl(mib, 4, aResult.get(), &len, NULL, 0) != 0) {
cout << "sysctl failed to get path: " << strerror(errno) << '\n';
return -1;
}
if (string(aResult.get()) == argv[1]) {
cout << "OK\n";
} else {
cout << "Not OK aResult " << aResult.get() << " argv[1] " << argv[1] << '\n';
}
if (sysctl(mib, 4, NULL, NULL, NULL, 0) != -1) {
cout << "OK syscall failed\n";
return -1;
} else {
cout << "sysctl succeeded when it should have failed\n";
}
}
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