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AnyPS5/core/libs/prx/libSceLibcInternal/Spawn.cpp
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#include "prx/libc/include/Api.hpp"
#include "prx/libSceLibcInternal/include/Api.hpp"
#include "prx/libSceLibcInternal/include/Spawn.hpp"
#include "prx/libc/include/ChildProcesses.hpp"
#include "prx/libc/include/FilesystemError.hpp"
#include "prx/libc/include/General.hpp"
#ifdef _WIN32
#include "prx/libc/include/WindowsDescriptor.hpp"
#endif
#include "prx/libkernel/File/include/FileFlags.hpp"
#include <algorithm>
#include <cstdint>
#include <fcntl.h>
#include <filesystem>
#include <new>
#include <stdexcept>
#include <string>
#include <string_view>
#include <system_error>
#include <utility>
#include <vector>
#ifdef _WIN32
#include <windows.h>
#else
#include <spawn.h>
#endif
#if defined(__linux__)
#include <unistd.h>
#elif defined(__APPLE__)
#include <crt_externs.h>
#include <mach-o/dyld.h>
#include <unistd.h>
#endif
#if defined(__linux__)
extern char** environ;
#endif
namespace {
constexpr int NoSuchFile = 2;
constexpr int BadDescriptor = 9;
constexpr int OutOfMemory = 12;
constexpr int Fault = 14;
constexpr int InvalidArgument = 22;
constexpr std::string_view DefaultSearchPath = "/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin";
constexpr std::string_view ApplicationRoot = "/app0/";
constexpr std::string_view MainExecutable = "/app0/eboot.bin";
#ifdef _WIN32
constexpr wchar_t LoadExecParentVariable[] = L"ANYPS5_LOADEXEC_PARENT";
constexpr wchar_t LoadExecSkipVariable[] = L"ANYPS5_LOADEXEC_ARGV_SKIP=";
#else
constexpr std::uint32_t SpawnFlagsImplemented = 0x03;
#endif
constexpr std::uint32_t SpawnFlagResetIds = 0x01;
constexpr std::uint32_t SpawnFlagSetGroup = 0x02;
PosixSpawnAttributes& Attributes(PosixSpawnAttributes* const* attributes, const char* function) {
if (attributes == nullptr || *attributes == nullptr) throw std::invalid_argument(std::string(function) + ": uninitialized attributes");
return **attributes;
}
PosixSpawnFileActions& FileActions(PosixSpawnFileActions* const* actions, const char* function) {
if (actions == nullptr || *actions == nullptr) throw std::invalid_argument(std::string(function) + ": uninitialized file actions");
return **actions;
}
int Append(PosixSpawnFileActions& actions, PosixSpawnFileAction action) {
try {
actions.actions.push_back(std::move(action));
} catch (const std::bad_alloc&) {
return OutOfMemory;
}
return 0;
}
bool GuestPathExists(const std::string& path) {
std::filesystem::path native;
if (ResolvePathError_nid_no_patch(path.c_str(), native) != 0) return false;
std::error_code error;
return std::filesystem::exists(native, error);
}
bool ProgramFound(std::string_view name, bool searchesPath, std::string& found) {
if (name.empty()) return false;
if (!searchesPath || name.find('/') != std::string_view::npos) {
found = std::string(name);
return GuestPathExists(found);
}
const char* variable = getenv_nid_postfix("PATH");
std::string_view directories = variable != nullptr ? std::string_view(variable) : DefaultSearchPath;
while (true) {
const auto separator = directories.find(':');
const auto directory = directories.substr(0, separator);
found = (directory.empty() ? std::string(".") : std::string(directory)) + '/' + std::string(name);
if (GuestPathExists(found)) return true;
if (separator == std::string_view::npos) return false;
directories.remove_prefix(separator + 1);
}
}
std::string FlattenedExecutableName(const std::string& guest, const char* function) {
std::string_view relative(guest);
if (!relative.starts_with(ApplicationRoot)) NotImplemented_nid_no_patch((std::string(function) + ": executables outside /app0 (" + guest + ")").c_str());
relative.remove_prefix(ApplicationRoot.size());
std::string name;
while (true) {
const std::size_t separator = relative.find('/');
const std::string_view component = relative.substr(0, separator);
if (component.empty() || component == "." || component == "..") NotImplemented_nid_no_patch((std::string(function) + ": a path with an empty, . or .. component (" + guest + ")").c_str());
name += (name.empty() ? "" : ".") + std::string(component);
if (separator == std::string_view::npos) return name;
relative.remove_prefix(separator + 1);
}
}
std::filesystem::path OwnExecutable() {
#if defined(_WIN32)
std::wstring own(32768, L'\0');
const DWORD length = GetModuleFileNameW(nullptr, own.data(), static_cast<DWORD>(own.size()));
if (length == 0 || length >= own.size()) throw std::system_error(GetLastError(), std::system_category(), "posix_spawn: GetModuleFileNameW");
own.resize(length);
return std::filesystem::path(own);
#elif defined(__APPLE__)
std::uint32_t size = 0;
_NSGetExecutablePath(nullptr, &size);
std::vector<char> executable(size);
std::error_code error;
if (_NSGetExecutablePath(executable.data(), &size) == 0) return std::filesystem::canonical(executable.data(), error);
throw std::runtime_error("posix_spawn: cannot locate the executable");
#else
std::error_code error;
const auto own = std::filesystem::read_symlink("/proc/self/exe", error);
if (error) throw std::system_error(error, "posix_spawn: cannot read /proc/self/exe");
return own;
#endif
}
std::filesystem::path ConvertedExecutableTarget(const char* function, const std::string& guest) {
const auto own = OwnExecutable();
if (guest == MainExecutable) return own;
std::error_code error;
const auto name = std::filesystem::path(reinterpret_cast<const char8_t*>((FlattenedExecutableName(guest, function) + own.extension().string()).c_str()));
const auto target = own.parent_path() / name;
if (!std::filesystem::is_regular_file(target, error))
NotImplemented_nid_no_patch((std::string(function) + ": " + guest + " without its converted executable; relink with --executable " + std::string(guest.substr(ApplicationRoot.size()))).c_str());
return target;
}
int HostOpenFlags(std::int32_t sceFlags) {
int f = 0;
const int acc = sceFlags & SCE_KERNEL_O_ACCMODE;
if (acc == SCE_KERNEL_O_RDONLY) f |= 0;
else if (acc == SCE_KERNEL_O_WRONLY) f |= 1;
else if (acc == SCE_KERNEL_O_RDWR) f |= 2;
else throw std::invalid_argument("posix_spawn_file_actions_addopen: invalid access mode");
#ifdef _WIN32
if (sceFlags & SCE_KERNEL_O_APPEND) f |= _O_APPEND;
if (sceFlags & SCE_KERNEL_O_CREAT) f |= _O_CREAT;
if (sceFlags & SCE_KERNEL_O_TRUNC) f |= _O_TRUNC;
if (sceFlags & SCE_KERNEL_O_EXCL) f |= _O_EXCL;
f |= _O_BINARY;
#else
if (sceFlags & SCE_KERNEL_O_APPEND) f |= O_APPEND;
if (sceFlags & SCE_KERNEL_O_CREAT) f |= O_CREAT;
if (sceFlags & SCE_KERNEL_O_TRUNC) f |= O_TRUNC;
if (sceFlags & SCE_KERNEL_O_EXCL) f |= O_EXCL;
#endif
return f;
}
#ifdef _WIN32
std::wstring Utf16(const std::string& text) {
if (text.empty()) return {};
const int size = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, text.data(), static_cast<int>(text.size()), nullptr, 0);
if (size <= 0) throw std::runtime_error("posix_spawn: argument is not valid UTF-8");
std::wstring wide(static_cast<std::size_t>(size), L'\0');
MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, text.data(), static_cast<int>(text.size()), wide.data(), size);
return wide;
}
std::wstring QuotedArgument(const std::wstring& argument) {
if (!argument.empty() && argument.find_first_of(L" \t\n\v\"") == std::wstring::npos) return argument;
std::wstring quoted = L"\"";
for (std::size_t index = 0;; ++index) {
std::size_t backslashes = 0;
while (index < argument.size() && argument[index] == L'\\') {
++backslashes;
++index;
}
if (index == argument.size()) {
quoted.append(backslashes * 2, L'\\');
break;
}
quoted.append(argument[index] == L'"' ? backslashes * 2 + 1 : backslashes, L'\\');
quoted.push_back(argument[index]);
}
quoted.push_back(L'"');
return quoted;
}
#endif
std::string HexFlag(std::uint32_t value) {
constexpr char digits[] = "0123456789abcdef";
std::string text;
if (value == 0) text.push_back('0');
while (value > 0) {
text.insert(text.begin(), digits[value & 0xfu]);
value >>= 4;
}
return "0x" + text;
}
std::uint32_t SpawnAttributeFlags(PosixSpawnAttributes* const* attributes) {
return attributes != nullptr && *attributes != nullptr ? static_cast<std::uint32_t>(static_cast<std::uint16_t>((*attributes)->flags)) : 0;
}
#ifdef _WIN32
struct ChildStreams {
HANDLE handles[3] = {INVALID_HANDLE_VALUE, INVALID_HANDLE_VALUE, INVALID_HANDLE_VALUE};
};
HANDLE DuplicateInheritable(HANDLE source) {
HANDLE handle = nullptr;
if (!DuplicateHandle(GetCurrentProcess(), source, GetCurrentProcess(), &handle, 0, TRUE, DUPLICATE_SAME_ACCESS))
throw std::system_error(GetLastError(), std::system_category(), "posix_spawn: duplicating a descriptor");
return handle;
}
void CloseRedirectedStreams(ChildStreams& streams) {
for (HANDLE handle : streams.handles)
if (handle != INVALID_HANDLE_VALUE) CloseHandle(handle);
}
void ReplaceChildStream(ChildStreams& streams, int descriptor, HANDLE source) {
HANDLE previous = streams.handles[descriptor];
streams.handles[descriptor] = source == INVALID_HANDLE_VALUE ? INVALID_HANDLE_VALUE : DuplicateInheritable(source);
if (previous != INVALID_HANDLE_VALUE) CloseHandle(previous);
}
int ApplyChildRedirection(ChildStreams& streams, const PosixSpawnFileAction& action) {
switch (action.kind) {
case PosixSpawnFileActionKind::Close:
if (action.descriptor >= 0 && action.descriptor < 3) ReplaceChildStream(streams, action.descriptor, INVALID_HANDLE_VALUE);
return 0;
case PosixSpawnFileActionKind::Duplicate:
if (action.descriptor < 0 || action.newDescriptor < 0) return BadDescriptor;
if (action.newDescriptor > 2)
NotImplemented_nid_no_patch(("posix_spawn: a child descriptor " + std::to_string(action.newDescriptor) + " beyond the standard streams").c_str());
{
const HANDLE source = WindowsDescriptorHandle_nid_no_patch(action.descriptor);
if (source == INVALID_HANDLE_VALUE) return BadDescriptor;
ReplaceChildStream(streams, action.newDescriptor, source);
}
return 0;
case PosixSpawnFileActionKind::Open: {
if (action.descriptor < 0) return BadDescriptor;
if (action.descriptor > 2)
NotImplemented_nid_no_patch(("posix_spawn: a child descriptor " + std::to_string(action.descriptor) + " beyond the standard streams").c_str());
std::filesystem::path native;
if (const int error = ResolvePathError_nid_no_patch(action.path.c_str(), native)) return error;
try {
const int fd = ::_wopen(native.c_str(), HostOpenFlags(action.openFlags), action.mode);
if (fd < 0) return errno;
const HANDLE source = WindowsDescriptorHandle_nid_no_patch(fd);
ReplaceChildStream(streams, action.descriptor, source);
::_close(fd);
} catch (const std::invalid_argument&) {
return InvalidArgument;
}
return 0;
}
}
return 0;
}
std::vector<wchar_t> ChildEnvironment(char* const* environment) {
std::vector<std::wstring> entries;
const auto missesMarkers = [](const std::wstring& entry) {
return entry.compare(0, std::size(LoadExecParentVariable) - 1, LoadExecParentVariable) != 0 &&
entry.compare(0, std::size(LoadExecSkipVariable) - 1, LoadExecSkipVariable) != 0;
};
if (environment != nullptr)
for (std::size_t index = 0; environment[index] != nullptr; ++index) {
const std::wstring entry = Utf16(environment[index]);
if (missesMarkers(entry))
entries.push_back(entry);
}
else {
const LPWCH block = GetEnvironmentStringsW();
for (const wchar_t* text = block; *text != L'\0'; ) {
std::size_t length = 0;
while (text[length] != L'\0') ++length;
if (length > 0) {
const std::wstring entry(text, length);
if (missesMarkers(entry))
entries.push_back(entry);
}
text += length + 1;
}
FreeEnvironmentStringsW(block);
}
entries.push_back(std::wstring(LoadExecSkipVariable) + L"1");
std::sort(entries.begin(), entries.end(), [](const auto& left, const auto& right) { return _wcsicmp(left.c_str(), right.c_str()) < 0; });
std::vector<wchar_t> block;
for (const auto& entry : entries) {
block.insert(block.end(), entry.begin(), entry.end());
block.push_back(0);
}
block.push_back(0);
return block;
}
int SpawnChild(const char* function, const std::string& guest, PosixSpawnFileActions* const* actions,
PosixSpawnAttributes* const* attributes, std::int32_t* processId, char* const* arguments, char* const* environment) {
const auto target = ConvertedExecutableTarget(function, guest);
if (const std::uint32_t attributes_flags = SpawnAttributeFlags(attributes); attributes_flags != 0)
NotImplemented_nid_no_patch(("posix_spawn: the attribute flags " + HexFlag(attributes_flags) + " on this host").c_str());
ChildStreams streams;
const DWORD identifiers[] = {STD_INPUT_HANDLE, STD_OUTPUT_HANDLE, STD_ERROR_HANDLE};
bool redirected = false;
for (std::size_t index = 0; index < 3; ++index) {
const HANDLE source = GetStdHandle(identifiers[index]);
if (source == nullptr || source == INVALID_HANDLE_VALUE) continue;
streams.handles[index] = DuplicateInheritable(source);
redirected = true;
}
if (actions != nullptr) {
for (const auto& action : (*actions)->actions) {
if (action.kind != PosixSpawnFileActionKind::Close || (action.descriptor >= 0 && action.descriptor < 3)) redirected = true;
const int error = ApplyChildRedirection(streams, action);
if (error != 0) {
CloseRedirectedStreams(streams);
return error;
}
}
}
std::wstring command = L"\"" + target.wstring() + L"\"";
for (std::size_t index = 0; arguments[index] != nullptr; ++index)
command += L" " + QuotedArgument(Utf16(arguments[index]));
if (command.size() >= 32767) throw std::runtime_error("posix_spawn: command line is too long");
auto environmentBlock = ChildEnvironment(environment);
PROCESS_INFORMATION process{};
const BOOL created = [&] {
if (!redirected || (streams.handles[0] == INVALID_HANDLE_VALUE && streams.handles[1] == INVALID_HANDLE_VALUE && streams.handles[2] == INVALID_HANDLE_VALUE)) {
STARTUPINFOW plain{};
plain.cb = sizeof(plain);
return CreateProcessW(const_cast<wchar_t*>(target.c_str()), command.data(), nullptr, nullptr, FALSE,
environmentBlock.empty() ? 0u : CREATE_UNICODE_ENVIRONMENT, environmentBlock.empty() ? nullptr : environmentBlock.data(),
nullptr, &plain, &process);
}
STARTUPINFOEXW startup{};
startup.StartupInfo.cb = sizeof(startup);
startup.StartupInfo.dwFlags = STARTF_USESTDHANDLES;
startup.StartupInfo.hStdInput = streams.handles[0];
startup.StartupInfo.hStdOutput = streams.handles[1];
startup.StartupInfo.hStdError = streams.handles[2];
std::vector<HANDLE> inherited;
for (HANDLE handle : streams.handles)
if (handle != INVALID_HANDLE_VALUE) inherited.push_back(handle);
SIZE_T bytes = 0;
InitializeProcThreadAttributeList(nullptr, 1, 0, &bytes);
std::vector<std::max_align_t> storage((bytes + sizeof(std::max_align_t) - 1) / sizeof(std::max_align_t));
auto* list = reinterpret_cast<LPPROC_THREAD_ATTRIBUTE_LIST>(storage.data());
if (!InitializeProcThreadAttributeList(list, 1, 0, &bytes) ||
!UpdateProcThreadAttribute(list, 0, PROC_THREAD_ATTRIBUTE_HANDLE_LIST, inherited.data(), inherited.size() * sizeof(HANDLE), nullptr, nullptr))
throw std::system_error(GetLastError(), std::system_category(), "posix_spawn: selecting inherited handles");
const std::unique_ptr<_PROC_THREAD_ATTRIBUTE_LIST, void (*)(_PROC_THREAD_ATTRIBUTE_LIST*)> cleanup(list, DeleteProcThreadAttributeList);
return CreateProcessW(const_cast<wchar_t*>(target.c_str()), command.data(), nullptr, nullptr, TRUE,
EXTENDED_STARTUPINFO_PRESENT | (environmentBlock.empty() ? 0u : CREATE_UNICODE_ENVIRONMENT),
environmentBlock.empty() ? nullptr : environmentBlock.data(), nullptr, &startup.StartupInfo, &process);
}();
if (!created) {
const DWORD error = GetLastError();
CloseRedirectedStreams(streams);
throw std::system_error(error, std::system_category(), "posix_spawn: creating the converted executable");
}
CloseRedirectedStreams(streams);
CloseHandle(process.hThread);
RegisterChildProcess_nid_no_patch(process.dwProcessId, static_cast<std::int64_t>(reinterpret_cast<std::uintptr_t>(process.hProcess)));
*processId = static_cast<std::int32_t>(process.dwProcessId);
return 0;
}
#else
int SpawnChild(const char* function, const std::string& guest, PosixSpawnFileActions* const* actions,
PosixSpawnAttributes* const* attributes, std::int32_t* processId, char* const* arguments, char* const* environment) {
const auto target = ConvertedExecutableTarget(function, guest);
posix_spawnattr_t hostAttributes;
posix_spawnattr_t* usedAttributes = nullptr;
const std::uint32_t flags = SpawnAttributeFlags(attributes);
if ((flags & ~SpawnFlagsImplemented) != 0)
NotImplemented_nid_no_patch(("posix_spawn: the attribute flags " + HexFlag(flags)).c_str());
if (flags != 0) {
if (posix_spawnattr_init(&hostAttributes) != 0) return Fault;
usedAttributes = &hostAttributes;
if ((flags & SpawnFlagResetIds) != 0) posix_spawnattr_setflags(usedAttributes, POSIX_SPAWN_RESETIDS);
if ((flags & SpawnFlagSetGroup) != 0) {
posix_spawnattr_setflags(usedAttributes, POSIX_SPAWN_SETPGROUP);
posix_spawnattr_setpgroup(usedAttributes, (*attributes)->processGroup);
}
}
posix_spawn_file_actions_t hostActions;
posix_spawn_file_actions_t* usedActions = nullptr;
if (actions != nullptr && !(*actions)->actions.empty()) {
if (posix_spawn_file_actions_init(&hostActions) != 0) {
if (usedAttributes != nullptr) posix_spawnattr_destroy(usedAttributes);
return Fault;
}
usedActions = &hostActions;
}
int result = 0;
if (actions != nullptr && usedActions != nullptr)
for (const auto& action : (*actions)->actions) {
switch (action.kind) {
case PosixSpawnFileActionKind::Close:
result = posix_spawn_file_actions_addclose(usedActions, action.descriptor);
break;
case PosixSpawnFileActionKind::Duplicate:
result = posix_spawn_file_actions_adddup2(usedActions, action.descriptor, action.newDescriptor);
break;
case PosixSpawnFileActionKind::Open: {
std::filesystem::path native;
if (const int error = ResolvePathError_nid_no_patch(action.path.c_str(), native)) result = error;
else {
try {
result = posix_spawn_file_actions_addopen(usedActions, action.descriptor, native.c_str(), HostOpenFlags(action.openFlags), action.mode);
} catch (const std::invalid_argument&) {
result = InvalidArgument;
}
}
break;
}
}
if (result != 0) break;
}
if (result == 0) {
char* const* hostEnvironment = environment;
#if defined(__linux__)
if (hostEnvironment == nullptr) hostEnvironment = environ;
#elif defined(__APPLE__)
if (hostEnvironment == nullptr) hostEnvironment = *_NSGetEnviron();
#endif
pid_t childPid = -1;
result = posix_spawn(&childPid, target.c_str(), usedActions, usedAttributes, arguments, hostEnvironment);
if (result == 0) *processId = static_cast<std::int32_t>(childPid);
}
if (usedActions != nullptr) posix_spawn_file_actions_destroy(usedActions);
if (usedAttributes != nullptr) posix_spawnattr_destroy(usedAttributes);
return result;
}
#endif
}
extern "C" {
int APS5_VABI posix_spawnattr_init_nid_postfix(PosixSpawnAttributes** attributes) {
if (attributes == nullptr) throw std::invalid_argument("posix_spawnattr_init: null attributes");
auto* created = new (std::nothrow) PosixSpawnAttributes{};
if (created == nullptr) return OutOfMemory;
*attributes = created;
return 0;
}
int APS5_VABI posix_spawnattr_destroy_nid_postfix(PosixSpawnAttributes** attributes) {
if (attributes == nullptr) throw std::invalid_argument("posix_spawnattr_destroy: null attributes");
delete *attributes;
return 0;
}
int APS5_VABI posix_spawnattr_setflags_nid_postfix(PosixSpawnAttributes** attributes, std::int16_t flags) {
Attributes(attributes, "posix_spawnattr_setflags").flags = flags;
return 0;
}
int APS5_VABI posix_spawnattr_setsigdefault_nid_postfix(PosixSpawnAttributes** attributes, const GuestSignalSet* signalDefault) {
auto& target = Attributes(attributes, "posix_spawnattr_setsigdefault");
if (signalDefault == nullptr) throw std::invalid_argument("posix_spawnattr_setsigdefault: null signal set");
target.signalDefault = *signalDefault;
return 0;
}
int APS5_VABI posix_spawnattr_getflags_nid_postfix(PosixSpawnAttributes* const* attributes, std::int16_t* flags) {
const auto& source = Attributes(attributes, "posix_spawnattr_getflags");
if (flags == nullptr) throw std::invalid_argument("posix_spawnattr_getflags: null flags");
*flags = source.flags;
return 0;
}
int APS5_VABI posix_spawnattr_getpgroup_nid_postfix(PosixSpawnAttributes* const* attributes, std::int32_t* processGroup) {
const auto& source = Attributes(attributes, "posix_spawnattr_getpgroup");
if (processGroup == nullptr) throw std::invalid_argument("posix_spawnattr_getpgroup: null process group");
*processGroup = source.processGroup;
return 0;
}
int APS5_VABI posix_spawnattr_getschedparam_nid_postfix(PosixSpawnAttributes* const* attributes, std::int32_t* schedulingParameter) {
const auto& source = Attributes(attributes, "posix_spawnattr_getschedparam");
if (schedulingParameter == nullptr) throw std::invalid_argument("posix_spawnattr_getschedparam: null scheduling parameter");
*schedulingParameter = source.schedulingPriority;
return 0;
}
int APS5_VABI posix_spawnattr_getschedpolicy_nid_postfix(PosixSpawnAttributes* const* attributes, std::int32_t* schedulingPolicy) {
const auto& source = Attributes(attributes, "posix_spawnattr_getschedpolicy");
if (schedulingPolicy == nullptr) throw std::invalid_argument("posix_spawnattr_getschedpolicy: null scheduling policy");
*schedulingPolicy = source.schedulingPolicy;
return 0;
}
int APS5_VABI posix_spawnattr_getsigdefault_nid_postfix(PosixSpawnAttributes* const* attributes, GuestSignalSet* signalDefault) {
const auto& source = Attributes(attributes, "posix_spawnattr_getsigdefault");
if (signalDefault == nullptr) throw std::invalid_argument("posix_spawnattr_getsigdefault: null signal set");
*signalDefault = source.signalDefault;
return 0;
}
int APS5_VABI posix_spawnattr_getsigmask_nid_postfix(PosixSpawnAttributes* const* attributes, GuestSignalSet* signalMask) {
const auto& source = Attributes(attributes, "posix_spawnattr_getsigmask");
if (signalMask == nullptr) throw std::invalid_argument("posix_spawnattr_getsigmask: null signal set");
*signalMask = source.signalMask;
return 0;
}
int APS5_VABI posix_spawnattr_setpgroup_nid_postfix(PosixSpawnAttributes** attributes, std::int32_t processGroup) {
Attributes(attributes, "posix_spawnattr_setpgroup").processGroup = processGroup;
return 0;
}
int APS5_VABI posix_spawnattr_setschedparam_nid_postfix(PosixSpawnAttributes** attributes, const std::int32_t* schedulingParameter) {
auto& target = Attributes(attributes, "posix_spawnattr_setschedparam");
if (schedulingParameter == nullptr) throw std::invalid_argument("posix_spawnattr_setschedparam: null scheduling parameter");
target.schedulingPriority = *schedulingParameter;
return 0;
}
int APS5_VABI posix_spawnattr_setschedpolicy_nid_postfix(PosixSpawnAttributes** attributes, std::int32_t schedulingPolicy) {
Attributes(attributes, "posix_spawnattr_setschedpolicy").schedulingPolicy = schedulingPolicy;
return 0;
}
int APS5_VABI posix_spawnattr_setsigmask_nid_postfix(PosixSpawnAttributes** attributes, const GuestSignalSet* signalMask) {
auto& target = Attributes(attributes, "posix_spawnattr_setsigmask");
if (signalMask == nullptr) throw std::invalid_argument("posix_spawnattr_setsigmask: null signal set");
target.signalMask = *signalMask;
return 0;
}
int APS5_VABI posix_spawn_file_actions_init_nid_postfix(PosixSpawnFileActions** actions) {
if (actions == nullptr) throw std::invalid_argument("posix_spawn_file_actions_init: null file actions");
auto* created = new (std::nothrow) PosixSpawnFileActions{};
if (created == nullptr) return -1;
*actions = created;
return 0;
}
int APS5_VABI posix_spawn_file_actions_destroy_nid_postfix(PosixSpawnFileActions** actions) {
delete &FileActions(actions, "posix_spawn_file_actions_destroy");
return 0;
}
int APS5_VABI posix_spawn_file_actions_addopen_nid_postfix(PosixSpawnFileActions** actions, int descriptor, const char* path, int openFlags, std::uint16_t mode) {
if (descriptor < 0) return BadDescriptor;
if (path == nullptr) throw std::invalid_argument("posix_spawn_file_actions_addopen: null path");
auto& target = FileActions(actions, "posix_spawn_file_actions_addopen");
try {
return Append(target, {PosixSpawnFileActionKind::Open, descriptor, path, openFlags, mode, 0});
} catch (const std::bad_alloc&) {
return OutOfMemory;
}
}
int APS5_VABI posix_spawn_file_actions_adddup2_nid_postfix(PosixSpawnFileActions** actions, int descriptor, int newDescriptor) {
if (descriptor < 0 || newDescriptor < 0) return BadDescriptor;
return Append(FileActions(actions, "posix_spawn_file_actions_adddup2"), {PosixSpawnFileActionKind::Duplicate, descriptor, {}, 0, 0, newDescriptor});
}
int APS5_VABI posix_spawn_file_actions_addclose_nid_postfix(PosixSpawnFileActions** actions, int descriptor) {
if (descriptor < 0) return BadDescriptor;
return Append(FileActions(actions, "posix_spawn_file_actions_addclose"), {PosixSpawnFileActionKind::Close, descriptor, {}, 0, 0, 0});
}
int SpawnProgram(const char* function, const char* file, bool searchesPath, PosixSpawnFileActions* const* actions,
PosixSpawnAttributes* const* attributes, std::int32_t* processId, char* const* arguments, char* const* environment) {
if (file == nullptr) throw std::invalid_argument(std::string(function) + ": null path");
if (actions != nullptr) FileActions(actions, function);
if (attributes != nullptr) Attributes(attributes, function);
std::string found;
if (!ProgramFound(file, searchesPath, found)) return NoSuchFile;
if (arguments == nullptr) return Fault;
return SpawnChild(function, found, actions, attributes, processId, arguments, environment);
}
int APS5_VABI posix_spawn_nid_postfix(std::int32_t* processId, const char* path, PosixSpawnFileActions* const* actions, PosixSpawnAttributes* const* attributes, char* const* arguments, char* const* environment) {
return SpawnProgram("posix_spawn", path, false, actions, attributes, processId, arguments, environment);
}
int APS5_VABI posix_spawnp_nid_postfix(std::int32_t* processId, const char* file, PosixSpawnFileActions* const* actions, PosixSpawnAttributes* const* attributes, char* const* arguments, char* const* environment) {
return SpawnProgram("posix_spawnp", file, true, actions, attributes, processId, arguments, environment);
}
}
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