mirror of
https://github.com/FEX-Emu/FEX.git
synced 2026-10-11 13:01:23 +02:00
Paulo Matos
b22b316e70
This was not necessary since FEXInterpreter is already doing it, and doing it properly. The previous implementation if FEXBash was incomplete.
91 lines
2.7 KiB
C++
91 lines
2.7 KiB
C++
// SPDX-License-Identifier: MIT
|
|
/*
|
|
$info$
|
|
tags: Bin|FEXBash
|
|
desc: Launches bash under FEX and passes arguments via -c to it
|
|
$end_info$
|
|
*/
|
|
|
|
#include "ConfigDefines.h"
|
|
#include "Common/ArgumentLoader.h"
|
|
|
|
#include <FEXCore/Config/Config.h>
|
|
|
|
#include <filesystem>
|
|
#include <string>
|
|
#include <unistd.h>
|
|
#include <vector>
|
|
|
|
int main(int argc, char** argv, char** const envp) {
|
|
FEX::ArgLoader::ArgLoader ArgsLoader(FEX::ArgLoader::ArgLoader::LoadType::WITHOUT_FEXLOADER_PARSER, argc, argv);
|
|
auto Args = ArgsLoader.Get();
|
|
|
|
std::vector<const char*> Argv;
|
|
// FEXInterpreter will handle finding bash in the rootfs
|
|
// Use /bin/sh for -c commands and /bin/bash for interactive mode
|
|
const char* BashPath = Args.empty() ? "/bin/bash" : "/bin/sh";
|
|
|
|
std::string FEXInterpreterPath = std::filesystem::path(argv[0]).parent_path().string() + "FEXInterpreter";
|
|
// Check if a local FEXInterpreter to FEXBash exists
|
|
// If it does then it takes priority over the installed one
|
|
if (!std::filesystem::exists(FEXInterpreterPath)) {
|
|
FEXInterpreterPath = FEXCore::Config::FindContainerPrefix() + FEXINTERPRETER_PATH;
|
|
}
|
|
const char* FEXArgs[] = {
|
|
FEXInterpreterPath.c_str(),
|
|
BashPath,
|
|
"-c",
|
|
};
|
|
|
|
// Remove -c argument if arguments are empty
|
|
// Lets us start an emulated bash instance
|
|
const size_t FEXArgsCount = std::size(FEXArgs) - (Args.empty() ? 1 : 0);
|
|
|
|
Argv.resize(Args.size() + FEXArgsCount);
|
|
|
|
// Pass in the FEXInterpreter arguments
|
|
for (size_t i = 0; i < FEXArgsCount; ++i) {
|
|
Argv[i] = FEXArgs[i];
|
|
}
|
|
|
|
// Bring in passed in arguments
|
|
for (size_t i = 0; i < Args.size(); ++i) {
|
|
Argv[i + FEXArgsCount] = Args[i].c_str();
|
|
}
|
|
|
|
// Set --norc when no arguments are passed so PS1 doesn't get overwritten
|
|
const char* NoRC = "--norc";
|
|
if (Args.empty()) {
|
|
Argv.emplace_back(NoRC);
|
|
}
|
|
|
|
Argv.emplace_back(nullptr);
|
|
|
|
// Prepend `FEXBash>` to PS1 to be less confusing about running under emulation
|
|
// In most cases PS1 isn't an environment variable, but instead a shell variable
|
|
// But in case the user has set the PS1 environment variable then still prepend
|
|
//
|
|
// To get the shell variables as an environment variable then you can do `PS1=$PS1 FEXBash`
|
|
std::vector<const char*> Envp {};
|
|
char* PS1Env {};
|
|
for (unsigned i = 0;; ++i) {
|
|
if (envp[i] == nullptr) {
|
|
break;
|
|
}
|
|
if (strstr(envp[i], "PS1=") == envp[i]) {
|
|
PS1Env = envp[i];
|
|
} else {
|
|
Envp.emplace_back(envp[i]);
|
|
}
|
|
}
|
|
|
|
std::string PS1 = "PS1=FEXBash-\\u@\\h:\\w> ";
|
|
if (PS1Env) {
|
|
PS1 += &PS1Env[strlen("PS1=")];
|
|
}
|
|
Envp.emplace_back(PS1.c_str());
|
|
Envp.emplace_back(nullptr);
|
|
|
|
return execve(Argv[0], const_cast<char* const*>(&Argv.at(0)), const_cast<char* const*>(&Envp[0]));
|
|
}
|