Hash :
3d8dff0a
Author :
Date :
2025-08-26T20:23:21
Suppress unsafe buffers on a file-by-file basis in util/ Bug: b/436880895 Change-Id: I299247e38853bb16afd466e3f6521342c0a2b0f8 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6891980 Auto-Submit: Tom Sepez <tsepez@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org>
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//
// Copyright 2019 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// system_utils: Defines common utility functions
#ifdef UNSAFE_BUFFERS_BUILD
# pragma allow_unsafe_buffers
#endif
#include "util/test_utils.h"
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <cstring>
#include <fstream>
#include <iostream>
#include <iterator>
namespace angle
{
namespace
{
void DeleteArg(int *argc, char **argv, int argIndex)
{
// Shift the remainder of the argv list left by one. Note that argv has (*argc + 1) elements,
// the last one always being NULL. The following loop moves the trailing NULL element as well.
for (int index = argIndex; index < *argc; ++index)
{
argv[index] = argv[index + 1];
}
(*argc)--;
}
const char *GetSingleArg(const char *flag,
int *argc,
char **argv,
int argIndex,
ArgHandling handling)
{
if (strstr(argv[argIndex], flag) == argv[argIndex])
{
const char *ptr = argv[argIndex] + strlen(flag);
if (*ptr == '=')
{
if (handling == ArgHandling::Delete)
{
DeleteArg(argc, argv, argIndex);
}
return ptr + 1;
}
if (*ptr == '\0' && argIndex < *argc - 1)
{
ptr = argv[argIndex + 1];
if (handling == ArgHandling::Delete)
{
DeleteArg(argc, argv, argIndex);
DeleteArg(argc, argv, argIndex);
}
return ptr;
}
}
return nullptr;
}
using DisplayTypeInfo = std::pair<const char *, EGLint>;
const DisplayTypeInfo kDisplayTypes[] = {
{"d3d9", EGL_PLATFORM_ANGLE_TYPE_D3D9_ANGLE},
{"d3d11", EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE},
{"gl", EGL_PLATFORM_ANGLE_TYPE_OPENGL_ANGLE},
{"gles", EGL_PLATFORM_ANGLE_TYPE_OPENGLES_ANGLE},
{"metal", EGL_PLATFORM_ANGLE_TYPE_METAL_ANGLE},
{"null", EGL_PLATFORM_ANGLE_TYPE_NULL_ANGLE},
{"swiftshader", EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE},
{"vulkan", EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE},
{"vulkan-null", EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE},
{"webgpu", EGL_PLATFORM_ANGLE_TYPE_WEBGPU_ANGLE},
};
} // anonymous namespace
bool GetFileSize(const char *filePath, uint32_t *sizeOut)
{
std::ifstream stream(filePath);
if (!stream)
{
return false;
}
stream.seekg(0, std::ios::end);
*sizeOut = static_cast<uint32_t>(stream.tellg());
return true;
}
bool ReadEntireFileToString(const char *filePath, std::string *contentsOut)
{
std::ifstream stream(filePath);
if (!stream)
{
return false;
}
stream.seekg(0, std::ios::end);
contentsOut->reserve(static_cast<unsigned int>(stream.tellg()));
stream.seekg(0, std::ios::beg);
contentsOut->assign((std::istreambuf_iterator<char>(stream)), std::istreambuf_iterator<char>());
return true;
}
// static
Process::~Process() = default;
ProcessHandle::ProcessHandle() : mProcess(nullptr) {}
ProcessHandle::ProcessHandle(Process *process) : mProcess(process) {}
ProcessHandle::ProcessHandle(const std::vector<const char *> &args,
ProcessOutputCapture captureOutput)
: mProcess(LaunchProcess(args, captureOutput))
{}
ProcessHandle::~ProcessHandle()
{
reset();
}
ProcessHandle::ProcessHandle(ProcessHandle &&other) : mProcess(other.mProcess)
{
other.mProcess = nullptr;
}
ProcessHandle &ProcessHandle::operator=(ProcessHandle &&rhs)
{
std::swap(mProcess, rhs.mProcess);
return *this;
}
void ProcessHandle::reset()
{
if (mProcess)
{
delete mProcess;
mProcess = nullptr;
}
}
bool ParseIntArgWithHandling(const char *flag,
int *argc,
char **argv,
int argIndex,
int *valueOut,
ArgHandling handling)
{
const char *value = GetSingleArg(flag, argc, argv, argIndex, handling);
if (!value)
{
return false;
}
char *end = nullptr;
const long longValue = strtol(value, &end, 10);
if (*end != '\0')
{
printf("Error parsing integer flag value.\n");
exit(EXIT_FAILURE);
}
if (longValue == LONG_MAX || longValue == LONG_MIN || static_cast<int>(longValue) != longValue)
{
printf("Overflow when parsing integer flag value.\n");
exit(EXIT_FAILURE);
}
*valueOut = static_cast<int>(longValue);
// Note: return value is always false with ArgHandling::Preserve handling
return handling == ArgHandling::Delete;
}
bool ParseIntArg(const char *flag, int *argc, char **argv, int argIndex, int *valueOut)
{
return ParseIntArgWithHandling(flag, argc, argv, argIndex, valueOut, ArgHandling::Delete);
}
bool ParseFlag(const char *flag, int *argc, char **argv, int argIndex, bool *flagOut)
{
if (strcmp(flag, argv[argIndex]) == 0)
{
*flagOut = true;
DeleteArg(argc, argv, argIndex);
return true;
}
return false;
}
bool ParseStringArg(const char *flag, int *argc, char **argv, int argIndex, std::string *valueOut)
{
const char *value = GetSingleArg(flag, argc, argv, argIndex, ArgHandling::Delete);
if (!value)
{
return false;
}
*valueOut = value;
return true;
}
bool ParseCStringArgWithHandling(const char *flag,
int *argc,
char **argv,
int argIndex,
const char **valueOut,
ArgHandling handling)
{
const char *value = GetSingleArg(flag, argc, argv, argIndex, handling);
if (!value)
{
return false;
}
*valueOut = value;
// Note: return value is always false with ArgHandling::Preserve handling
return handling == ArgHandling::Delete;
}
bool ParseCStringArg(const char *flag, int *argc, char **argv, int argIndex, const char **valueOut)
{
return ParseCStringArgWithHandling(flag, argc, argv, argIndex, valueOut, ArgHandling::Delete);
}
void AddArg(int *argc, char **argv, const char *arg)
{
// This unsafe const_cast is necessary to work around gtest limitations.
argv[*argc] = const_cast<char *>(arg);
argv[*argc + 1] = nullptr;
(*argc)++;
}
uint32_t GetPlatformANGLETypeFromArg(const char *useANGLEArg, uint32_t defaultPlatformType)
{
if (!useANGLEArg)
{
return defaultPlatformType;
}
for (const DisplayTypeInfo &displayTypeInfo : kDisplayTypes)
{
if (strcmp(displayTypeInfo.first, useANGLEArg) == 0)
{
std::cout << "Using ANGLE back-end API: " << displayTypeInfo.first << std::endl;
return displayTypeInfo.second;
}
}
std::cout << "Unknown ANGLE back-end API: " << useANGLEArg << std::endl;
exit(EXIT_FAILURE);
}
uint32_t GetANGLEDeviceTypeFromArg(const char *useANGLEArg, uint32_t defaultDeviceType)
{
if (useANGLEArg)
{
if (strcmp(useANGLEArg, "swiftshader") == 0)
{
return EGL_PLATFORM_ANGLE_DEVICE_TYPE_SWIFTSHADER_ANGLE;
}
if (strstr(useANGLEArg, "null") != 0)
{
return EGL_PLATFORM_ANGLE_DEVICE_TYPE_NULL_ANGLE;
}
}
return defaultDeviceType;
}
} // namespace angle