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Rework subprocess spawning using clone3/execveat

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This commit is contained in:
Luke Street
2025-10-08 18:13:47 -06:00
parent 15ea650fd5
commit cac944400f
5 changed files with 69 additions and 53 deletions
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14
src/main.cpp
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@@ -28,7 +28,6 @@ thread_local uint32_t wibo::lastError = 0;
char **wibo::argv;
int wibo::argc;
std::filesystem::path wibo::guestExecutablePath;
std::string wibo::executableName;
std::string wibo::commandLine;
std::vector<uint16_t> wibo::commandLineW;
wibo::ModuleInfo *wibo::mainModule = nullptr;
@@ -431,18 +430,6 @@ int main(int argc, char **argv) {
return 1;
}
// Try to resolve our own executable path
std::error_code ec;
auto resolved = std::filesystem::read_symlink("/proc/self/exe", ec);
std::string executablePath;
if (!ec) {
executablePath = resolved.string();
} else {
const char *selfArg = argv[0] ? argv[0] : "";
auto absCandidate = std::filesystem::absolute(selfArg, ec);
executablePath = ec ? std::string(selfArg) : absCandidate.string();
}
if (!chdirPath.empty()) {
if (chdir(chdirPath.c_str()) != 0) {
std::string message = std::string("Failed to chdir to ") + chdirPath;
@@ -562,7 +549,6 @@ int main(int argc, char **argv) {
DEBUG_LOG("Command line: %s\n", wibo::commandLine.c_str());
wibo::guestExecutablePath = resolvedGuestPath;
wibo::executableName = executablePath;
// Build argv/argc
std::vector<char *> guestArgv;