summaryrefslogtreecommitdiff
path: root/contrib/llvm/lib/Support/Windows/Program.inc
diff options
context:
space:
mode:
Diffstat (limited to 'contrib/llvm/lib/Support/Windows/Program.inc')
-rw-r--r--contrib/llvm/lib/Support/Windows/Program.inc523
1 files changed, 0 insertions, 523 deletions
diff --git a/contrib/llvm/lib/Support/Windows/Program.inc b/contrib/llvm/lib/Support/Windows/Program.inc
deleted file mode 100644
index 0f54e59ee55b..000000000000
--- a/contrib/llvm/lib/Support/Windows/Program.inc
+++ /dev/null
@@ -1,523 +0,0 @@
-//===- Win32/Program.cpp - Win32 Program Implementation ------- -*- C++ -*-===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// This file provides the Win32 specific implementation of the Program class.
-//
-//===----------------------------------------------------------------------===//
-
-#include "WindowsSupport.h"
-#include "llvm/ADT/StringExtras.h"
-#include "llvm/Support/ConvertUTF.h"
-#include "llvm/Support/Errc.h"
-#include "llvm/Support/FileSystem.h"
-#include "llvm/Support/Path.h"
-#include "llvm/Support/WindowsError.h"
-#include "llvm/Support/raw_ostream.h"
-#include <cstdio>
-#include <fcntl.h>
-#include <io.h>
-#include <malloc.h>
-#include <numeric>
-
-//===----------------------------------------------------------------------===//
-//=== WARNING: Implementation here must contain only Win32 specific code
-//=== and must not be UNIX code
-//===----------------------------------------------------------------------===//
-
-namespace llvm {
-
-ProcessInfo::ProcessInfo() : Pid(0), Process(0), ReturnCode(0) {}
-
-ErrorOr<std::string> sys::findProgramByName(StringRef Name,
- ArrayRef<StringRef> Paths) {
- assert(!Name.empty() && "Must have a name!");
-
- if (Name.find_first_of("/\\") != StringRef::npos)
- return std::string(Name);
-
- const wchar_t *Path = nullptr;
- std::wstring PathStorage;
- if (!Paths.empty()) {
- PathStorage.reserve(Paths.size() * MAX_PATH);
- for (unsigned i = 0; i < Paths.size(); ++i) {
- if (i)
- PathStorage.push_back(L';');
- StringRef P = Paths[i];
- SmallVector<wchar_t, MAX_PATH> TmpPath;
- if (std::error_code EC = windows::UTF8ToUTF16(P, TmpPath))
- return EC;
- PathStorage.append(TmpPath.begin(), TmpPath.end());
- }
- Path = PathStorage.c_str();
- }
-
- SmallVector<wchar_t, MAX_PATH> U16Name;
- if (std::error_code EC = windows::UTF8ToUTF16(Name, U16Name))
- return EC;
-
- SmallVector<StringRef, 12> PathExts;
- PathExts.push_back("");
- PathExts.push_back(".exe"); // FIXME: This must be in %PATHEXT%.
- if (const char *PathExtEnv = std::getenv("PATHEXT"))
- SplitString(PathExtEnv, PathExts, ";");
-
- SmallVector<wchar_t, MAX_PATH> U16Result;
- DWORD Len = MAX_PATH;
- for (StringRef Ext : PathExts) {
- SmallVector<wchar_t, MAX_PATH> U16Ext;
- if (std::error_code EC = windows::UTF8ToUTF16(Ext, U16Ext))
- return EC;
-
- do {
- U16Result.reserve(Len);
- // Lets attach the extension manually. That is needed for files
- // with a point in name like aaa.bbb. SearchPathW will not add extension
- // from its argument to such files because it thinks they already had one.
- SmallVector<wchar_t, MAX_PATH> U16NameExt;
- if (std::error_code EC =
- windows::UTF8ToUTF16(Twine(Name + Ext).str(), U16NameExt))
- return EC;
-
- Len = ::SearchPathW(Path, c_str(U16NameExt), nullptr,
- U16Result.capacity(), U16Result.data(), nullptr);
- } while (Len > U16Result.capacity());
-
- if (Len != 0)
- break; // Found it.
- }
-
- if (Len == 0)
- return mapWindowsError(::GetLastError());
-
- U16Result.set_size(Len);
-
- SmallVector<char, MAX_PATH> U8Result;
- if (std::error_code EC =
- windows::UTF16ToUTF8(U16Result.data(), U16Result.size(), U8Result))
- return EC;
-
- return std::string(U8Result.begin(), U8Result.end());
-}
-
-bool MakeErrMsg(std::string *ErrMsg, const std::string &prefix) {
- if (!ErrMsg)
- return true;
- char *buffer = NULL;
- DWORD LastError = GetLastError();
- DWORD R = FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER |
- FORMAT_MESSAGE_FROM_SYSTEM |
- FORMAT_MESSAGE_MAX_WIDTH_MASK,
- NULL, LastError, 0, (LPSTR)&buffer, 1, NULL);
- if (R)
- *ErrMsg = prefix + ": " + buffer;
- else
- *ErrMsg = prefix + ": Unknown error";
- *ErrMsg += " (0x" + llvm::utohexstr(LastError) + ")";
-
- LocalFree(buffer);
- return R != 0;
-}
-
-static HANDLE RedirectIO(Optional<StringRef> Path, int fd,
- std::string *ErrMsg) {
- HANDLE h;
- if (!Path) {
- if (!DuplicateHandle(GetCurrentProcess(), (HANDLE)_get_osfhandle(fd),
- GetCurrentProcess(), &h,
- 0, TRUE, DUPLICATE_SAME_ACCESS))
- return INVALID_HANDLE_VALUE;
- return h;
- }
-
- std::string fname;
- if (Path->empty())
- fname = "NUL";
- else
- fname = *Path;
-
- SECURITY_ATTRIBUTES sa;
- sa.nLength = sizeof(sa);
- sa.lpSecurityDescriptor = 0;
- sa.bInheritHandle = TRUE;
-
- SmallVector<wchar_t, 128> fnameUnicode;
- if (Path->empty()) {
- // Don't play long-path tricks on "NUL".
- if (windows::UTF8ToUTF16(fname, fnameUnicode))
- return INVALID_HANDLE_VALUE;
- } else {
- if (path::widenPath(fname, fnameUnicode))
- return INVALID_HANDLE_VALUE;
- }
- h = CreateFileW(fnameUnicode.data(), fd ? GENERIC_WRITE : GENERIC_READ,
- FILE_SHARE_READ, &sa, fd == 0 ? OPEN_EXISTING : CREATE_ALWAYS,
- FILE_ATTRIBUTE_NORMAL, NULL);
- if (h == INVALID_HANDLE_VALUE) {
- MakeErrMsg(ErrMsg, fname + ": Can't open file for " +
- (fd ? "input" : "output"));
- }
-
- return h;
-}
-
-}
-
-static bool Execute(ProcessInfo &PI, StringRef Program,
- ArrayRef<StringRef> Args, Optional<ArrayRef<StringRef>> Env,
- ArrayRef<Optional<StringRef>> Redirects,
- unsigned MemoryLimit, std::string *ErrMsg) {
- if (!sys::fs::can_execute(Program)) {
- if (ErrMsg)
- *ErrMsg = "program not executable";
- return false;
- }
-
- // can_execute may succeed by looking at Program + ".exe". CreateProcessW
- // will implicitly add the .exe if we provide a command line without an
- // executable path, but since we use an explicit executable, we have to add
- // ".exe" ourselves.
- SmallString<64> ProgramStorage;
- if (!sys::fs::exists(Program))
- Program = Twine(Program + ".exe").toStringRef(ProgramStorage);
-
- // Windows wants a command line, not an array of args, to pass to the new
- // process. We have to concatenate them all, while quoting the args that
- // have embedded spaces (or are empty).
- std::string Command = flattenWindowsCommandLine(Args);
-
- // The pointer to the environment block for the new process.
- std::vector<wchar_t> EnvBlock;
-
- if (Env) {
- // An environment block consists of a null-terminated block of
- // null-terminated strings. Convert the array of environment variables to
- // an environment block by concatenating them.
- for (const auto E : *Env) {
- SmallVector<wchar_t, MAX_PATH> EnvString;
- if (std::error_code ec = windows::UTF8ToUTF16(E, EnvString)) {
- SetLastError(ec.value());
- MakeErrMsg(ErrMsg, "Unable to convert environment variable to UTF-16");
- return false;
- }
-
- EnvBlock.insert(EnvBlock.end(), EnvString.begin(), EnvString.end());
- EnvBlock.push_back(0);
- }
- EnvBlock.push_back(0);
- }
-
- // Create a child process.
- STARTUPINFOW si;
- memset(&si, 0, sizeof(si));
- si.cb = sizeof(si);
- si.hStdInput = INVALID_HANDLE_VALUE;
- si.hStdOutput = INVALID_HANDLE_VALUE;
- si.hStdError = INVALID_HANDLE_VALUE;
-
- if (!Redirects.empty()) {
- si.dwFlags = STARTF_USESTDHANDLES;
-
- si.hStdInput = RedirectIO(Redirects[0], 0, ErrMsg);
- if (si.hStdInput == INVALID_HANDLE_VALUE) {
- MakeErrMsg(ErrMsg, "can't redirect stdin");
- return false;
- }
- si.hStdOutput = RedirectIO(Redirects[1], 1, ErrMsg);
- if (si.hStdOutput == INVALID_HANDLE_VALUE) {
- CloseHandle(si.hStdInput);
- MakeErrMsg(ErrMsg, "can't redirect stdout");
- return false;
- }
- if (Redirects[1] && Redirects[2] && *Redirects[1] == *Redirects[2]) {
- // If stdout and stderr should go to the same place, redirect stderr
- // to the handle already open for stdout.
- if (!DuplicateHandle(GetCurrentProcess(), si.hStdOutput,
- GetCurrentProcess(), &si.hStdError,
- 0, TRUE, DUPLICATE_SAME_ACCESS)) {
- CloseHandle(si.hStdInput);
- CloseHandle(si.hStdOutput);
- MakeErrMsg(ErrMsg, "can't dup stderr to stdout");
- return false;
- }
- } else {
- // Just redirect stderr
- si.hStdError = RedirectIO(Redirects[2], 2, ErrMsg);
- if (si.hStdError == INVALID_HANDLE_VALUE) {
- CloseHandle(si.hStdInput);
- CloseHandle(si.hStdOutput);
- MakeErrMsg(ErrMsg, "can't redirect stderr");
- return false;
- }
- }
- }
-
- PROCESS_INFORMATION pi;
- memset(&pi, 0, sizeof(pi));
-
- fflush(stdout);
- fflush(stderr);
-
- SmallVector<wchar_t, MAX_PATH> ProgramUtf16;
- if (std::error_code ec = path::widenPath(Program, ProgramUtf16)) {
- SetLastError(ec.value());
- MakeErrMsg(ErrMsg,
- std::string("Unable to convert application name to UTF-16"));
- return false;
- }
-
- SmallVector<wchar_t, MAX_PATH> CommandUtf16;
- if (std::error_code ec = windows::UTF8ToUTF16(Command, CommandUtf16)) {
- SetLastError(ec.value());
- MakeErrMsg(ErrMsg,
- std::string("Unable to convert command-line to UTF-16"));
- return false;
- }
-
- BOOL rc = CreateProcessW(ProgramUtf16.data(), CommandUtf16.data(), 0, 0,
- TRUE, CREATE_UNICODE_ENVIRONMENT,
- EnvBlock.empty() ? 0 : EnvBlock.data(), 0, &si,
- &pi);
- DWORD err = GetLastError();
-
- // Regardless of whether the process got created or not, we are done with
- // the handles we created for it to inherit.
- CloseHandle(si.hStdInput);
- CloseHandle(si.hStdOutput);
- CloseHandle(si.hStdError);
-
- // Now return an error if the process didn't get created.
- if (!rc) {
- SetLastError(err);
- MakeErrMsg(ErrMsg, std::string("Couldn't execute program '") +
- Program.str() + "'");
- return false;
- }
-
- PI.Pid = pi.dwProcessId;
- PI.Process = pi.hProcess;
-
- // Make sure these get closed no matter what.
- ScopedCommonHandle hThread(pi.hThread);
-
- // Assign the process to a job if a memory limit is defined.
- ScopedJobHandle hJob;
- if (MemoryLimit != 0) {
- hJob = CreateJobObjectW(0, 0);
- bool success = false;
- if (hJob) {
- JOBOBJECT_EXTENDED_LIMIT_INFORMATION jeli;
- memset(&jeli, 0, sizeof(jeli));
- jeli.BasicLimitInformation.LimitFlags = JOB_OBJECT_LIMIT_PROCESS_MEMORY;
- jeli.ProcessMemoryLimit = uintptr_t(MemoryLimit) * 1048576;
- if (SetInformationJobObject(hJob, JobObjectExtendedLimitInformation,
- &jeli, sizeof(jeli))) {
- if (AssignProcessToJobObject(hJob, pi.hProcess))
- success = true;
- }
- }
- if (!success) {
- SetLastError(GetLastError());
- MakeErrMsg(ErrMsg, std::string("Unable to set memory limit"));
- TerminateProcess(pi.hProcess, 1);
- WaitForSingleObject(pi.hProcess, INFINITE);
- return false;
- }
- }
-
- return true;
-}
-
-static bool argNeedsQuotes(StringRef Arg) {
- if (Arg.empty())
- return true;
- return StringRef::npos != Arg.find_first_of("\t \"&\'()*<>\\`^|\n");
-}
-
-static std::string quoteSingleArg(StringRef Arg) {
- std::string Result;
- Result.push_back('"');
-
- while (!Arg.empty()) {
- size_t FirstNonBackslash = Arg.find_first_not_of('\\');
- size_t BackslashCount = FirstNonBackslash;
- if (FirstNonBackslash == StringRef::npos) {
- // The entire remainder of the argument is backslashes. Escape all of
- // them and just early out.
- BackslashCount = Arg.size();
- Result.append(BackslashCount * 2, '\\');
- break;
- }
-
- if (Arg[FirstNonBackslash] == '\"') {
- // This is an embedded quote. Escape all preceding backslashes, then
- // add one additional backslash to escape the quote.
- Result.append(BackslashCount * 2 + 1, '\\');
- Result.push_back('\"');
- } else {
- // This is just a normal character. Don't escape any of the preceding
- // backslashes, just append them as they are and then append the
- // character.
- Result.append(BackslashCount, '\\');
- Result.push_back(Arg[FirstNonBackslash]);
- }
-
- // Drop all the backslashes, plus the following character.
- Arg = Arg.drop_front(FirstNonBackslash + 1);
- }
-
- Result.push_back('"');
- return Result;
-}
-
-namespace llvm {
-std::string sys::flattenWindowsCommandLine(ArrayRef<StringRef> Args) {
- std::string Command;
- for (StringRef Arg : Args) {
- if (argNeedsQuotes(Arg))
- Command += quoteSingleArg(Arg);
- else
- Command += Arg;
-
- Command.push_back(' ');
- }
-
- return Command;
-}
-
-ProcessInfo sys::Wait(const ProcessInfo &PI, unsigned SecondsToWait,
- bool WaitUntilChildTerminates, std::string *ErrMsg) {
- assert(PI.Pid && "invalid pid to wait on, process not started?");
- assert((PI.Process && PI.Process != INVALID_HANDLE_VALUE) &&
- "invalid process handle to wait on, process not started?");
- DWORD milliSecondsToWait = 0;
- if (WaitUntilChildTerminates)
- milliSecondsToWait = INFINITE;
- else if (SecondsToWait > 0)
- milliSecondsToWait = SecondsToWait * 1000;
-
- ProcessInfo WaitResult = PI;
- DWORD WaitStatus = WaitForSingleObject(PI.Process, milliSecondsToWait);
- if (WaitStatus == WAIT_TIMEOUT) {
- if (SecondsToWait) {
- if (!TerminateProcess(PI.Process, 1)) {
- if (ErrMsg)
- MakeErrMsg(ErrMsg, "Failed to terminate timed-out program");
-
- // -2 indicates a crash or timeout as opposed to failure to execute.
- WaitResult.ReturnCode = -2;
- CloseHandle(PI.Process);
- return WaitResult;
- }
- WaitForSingleObject(PI.Process, INFINITE);
- CloseHandle(PI.Process);
- } else {
- // Non-blocking wait.
- return ProcessInfo();
- }
- }
-
- // Get its exit status.
- DWORD status;
- BOOL rc = GetExitCodeProcess(PI.Process, &status);
- DWORD err = GetLastError();
- if (err != ERROR_INVALID_HANDLE)
- CloseHandle(PI.Process);
-
- if (!rc) {
- SetLastError(err);
- if (ErrMsg)
- MakeErrMsg(ErrMsg, "Failed getting status for program");
-
- // -2 indicates a crash or timeout as opposed to failure to execute.
- WaitResult.ReturnCode = -2;
- return WaitResult;
- }
-
- if (!status)
- return WaitResult;
-
- // Pass 10(Warning) and 11(Error) to the callee as negative value.
- if ((status & 0xBFFF0000U) == 0x80000000U)
- WaitResult.ReturnCode = static_cast<int>(status);
- else if (status & 0xFF)
- WaitResult.ReturnCode = status & 0x7FFFFFFF;
- else
- WaitResult.ReturnCode = 1;
-
- return WaitResult;
-}
-
-std::error_code sys::ChangeStdinToBinary() {
- int result = _setmode(_fileno(stdin), _O_BINARY);
- if (result == -1)
- return std::error_code(errno, std::generic_category());
- return std::error_code();
-}
-
-std::error_code sys::ChangeStdoutToBinary() {
- int result = _setmode(_fileno(stdout), _O_BINARY);
- if (result == -1)
- return std::error_code(errno, std::generic_category());
- return std::error_code();
-}
-
-std::error_code
-llvm::sys::writeFileWithEncoding(StringRef FileName, StringRef Contents,
- WindowsEncodingMethod Encoding) {
- std::error_code EC;
- llvm::raw_fd_ostream OS(FileName, EC, llvm::sys::fs::F_Text);
- if (EC)
- return EC;
-
- if (Encoding == WEM_UTF8) {
- OS << Contents;
- } else if (Encoding == WEM_CurrentCodePage) {
- SmallVector<wchar_t, 1> ArgsUTF16;
- SmallVector<char, 1> ArgsCurCP;
-
- if ((EC = windows::UTF8ToUTF16(Contents, ArgsUTF16)))
- return EC;
-
- if ((EC = windows::UTF16ToCurCP(
- ArgsUTF16.data(), ArgsUTF16.size(), ArgsCurCP)))
- return EC;
-
- OS.write(ArgsCurCP.data(), ArgsCurCP.size());
- } else if (Encoding == WEM_UTF16) {
- SmallVector<wchar_t, 1> ArgsUTF16;
-
- if ((EC = windows::UTF8ToUTF16(Contents, ArgsUTF16)))
- return EC;
-
- // Endianness guessing
- char BOM[2];
- uint16_t src = UNI_UTF16_BYTE_ORDER_MARK_NATIVE;
- memcpy(BOM, &src, 2);
- OS.write(BOM, 2);
- OS.write((char *)ArgsUTF16.data(), ArgsUTF16.size() << 1);
- } else {
- llvm_unreachable("Unknown encoding");
- }
-
- if (OS.has_error())
- return make_error_code(errc::io_error);
-
- return EC;
-}
-
-bool llvm::sys::commandLineFitsWithinSystemLimits(StringRef Program,
- ArrayRef<StringRef> Args) {
- // The documented max length of the command line passed to CreateProcess.
- static const size_t MaxCommandStringLength = 32768;
- SmallVector<StringRef, 8> FullArgs;
- FullArgs.push_back(Program);
- FullArgs.append(Args.begin(), Args.end());
- std::string Result = flattenWindowsCommandLine(FullArgs);
- return (Result.size() + 1) <= MaxCommandStringLength;
-}
-}
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-02 22:35:10 +0000