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loader.c
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/*
*
* Copyright (c) 2014-2020 The Khronos Group Inc.
* Copyright (c) 2014-2020 Valve Corporation
* Copyright (c) 2014-2020 LunarG, Inc.
* Copyright (C) 2015 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Author: Jon Ashburn <[email protected]>
* Author: Courtney Goeltzenleuchter <[email protected]>
* Author: Mark Young <[email protected]>
* Author: Lenny Komow <[email protected]>
*
*/
// This needs to be defined first, or else we'll get redefinitions on NTSTATUS values
#ifdef _WIN32
#define UMDF_USING_NTSTATUS
#include <ntstatus.h>
#endif
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdbool.h>
#include <string.h>
#include <stddef.h>
#if defined(__APPLE__)
#include <CoreFoundation/CoreFoundation.h>
#include <sys/param.h>
#endif
// Time related functions
#include <time.h>
#include <sys/types.h>
#if defined(_WIN32)
#include "dirent_on_windows.h"
#else // _WIN32
#include <dirent.h>
#endif // _WIN32
#include "vk_loader_platform.h"
#include "loader.h"
#include "gpa_helper.h"
#include "debug_utils.h"
#include "wsi.h"
#include "vulkan/vk_icd.h"
#include "cJSON.h"
#include "murmurhash.h"
#if defined(_WIN32)
#include <cfgmgr32.h>
#include <initguid.h>
#include <devpkey.h>
#include <winternl.h>
#include <strsafe.h>
#ifdef __MINGW32__
#undef strcpy // fix error with redfined strcpy when building with MinGW-w64
#endif
#include <dxgi1_6.h>
#include "adapters.h"
#if !defined(NDEBUG)
#include <crtdbg.h>
#endif
typedef HRESULT (APIENTRY *PFN_CreateDXGIFactory1)(REFIID riid, void **ppFactory);
static PFN_CreateDXGIFactory1 fpCreateDXGIFactory1;
#endif
// This is a CMake generated file with #defines for any functions/includes
// that it found present. This is currently necessary to properly determine
// if secure_getenv or __secure_getenv are present
#if !defined(VULKAN_NON_CMAKE_BUILD)
#include "loader_cmake_config.h"
#endif // !defined(VULKAN_NON_CMAKE_BUILD)
// Generated file containing all the extension data
#include "vk_loader_extensions.c"
// Environment Variable information
#define VK_ICD_FILENAMES_ENV_VAR "VK_ICD_FILENAMES"
#define VK_LAYER_PATH_ENV_VAR "VK_LAYER_PATH"
// Override layer information
#define VK_OVERRIDE_LAYER_NAME "VK_LAYER_LUNARG_override"
struct loader_struct loader = {0};
// TLS for instance for alloc/free callbacks
THREAD_LOCAL_DECL struct loader_instance *tls_instance;
static size_t loader_platform_combine_path(char *dest, size_t len, ...);
struct loader_phys_dev_per_icd {
uint32_t count;
VkPhysicalDevice *phys_devs;
struct loader_icd_term *this_icd_term;
};
uint32_t g_loader_debug = 0;
enum loader_data_files_type {
LOADER_DATA_FILE_MANIFEST_ICD = 0,
LOADER_DATA_FILE_MANIFEST_LAYER,
LOADER_DATA_FILE_NUM_TYPES // Not a real field, used for possible loop terminator
};
// thread safety lock for accessing global data structures such as "loader"
// all entrypoints on the instance chain need to be locked except GPA
// additionally CreateDevice and DestroyDevice needs to be locked
loader_platform_thread_mutex loader_lock;
loader_platform_thread_mutex loader_json_lock;
loader_platform_thread_mutex loader_preload_icd_lock;
// A list of ICDs that gets initialized when the loader does its global initialization. This list should never be used by anything
// other than EnumerateInstanceExtensionProperties(), vkDestroyInstance, and loader_release(). This list does not change
// functionality, but the fact that the libraries already been loaded causes any call that needs to load ICD libraries to speed up
// significantly. This can have a huge impact when making repeated calls to vkEnumerateInstanceExtensionProperties and
// vkCreateInstance.
static struct loader_icd_tramp_list scanned_icds;
LOADER_PLATFORM_THREAD_ONCE_DECLARATION(once_init);
void *loader_instance_heap_alloc(const struct loader_instance *instance, size_t size, VkSystemAllocationScope alloc_scope) {
void *pMemory = NULL;
#if (DEBUG_DISABLE_APP_ALLOCATORS == 1)
{
#else
if (instance && instance->alloc_callbacks.pfnAllocation) {
// These are internal structures, so it's best to align everything to
// the largest unit size which is the size of a uint64_t.
pMemory = instance->alloc_callbacks.pfnAllocation(instance->alloc_callbacks.pUserData, size, sizeof(uint64_t), alloc_scope);
} else {
#endif
pMemory = malloc(size);
}
return pMemory;
}
void loader_instance_heap_free(const struct loader_instance *instance, void *pMemory) {
if (pMemory != NULL) {
#if (DEBUG_DISABLE_APP_ALLOCATORS == 1)
{
#else
if (instance && instance->alloc_callbacks.pfnFree) {
instance->alloc_callbacks.pfnFree(instance->alloc_callbacks.pUserData, pMemory);
} else {
#endif
free(pMemory);
}
}
}
void *loader_instance_heap_realloc(const struct loader_instance *instance, void *pMemory, size_t orig_size, size_t size,
VkSystemAllocationScope alloc_scope) {
void *pNewMem = NULL;
if (pMemory == NULL || orig_size == 0) {
pNewMem = loader_instance_heap_alloc(instance, size, alloc_scope);
} else if (size == 0) {
loader_instance_heap_free(instance, pMemory);
#if (DEBUG_DISABLE_APP_ALLOCATORS == 1)
#else
} else if (instance && instance->alloc_callbacks.pfnReallocation) {
// These are internal structures, so it's best to align everything to
// the largest unit size which is the size of a uint64_t.
pNewMem = instance->alloc_callbacks.pfnReallocation(instance->alloc_callbacks.pUserData, pMemory, size, sizeof(uint64_t),
alloc_scope);
#endif
} else {
pNewMem = realloc(pMemory, size);
}
return pNewMem;
}
void *loader_instance_tls_heap_alloc(size_t size) {
return loader_instance_heap_alloc(tls_instance, size, VK_SYSTEM_ALLOCATION_SCOPE_COMMAND);
}
void loader_instance_tls_heap_free(void *pMemory) { loader_instance_heap_free(tls_instance, pMemory); }
void *loader_device_heap_alloc(const struct loader_device *device, size_t size, VkSystemAllocationScope alloc_scope) {
void *pMemory = NULL;
#if (DEBUG_DISABLE_APP_ALLOCATORS == 1)
{
#else
if (device && device->alloc_callbacks.pfnAllocation) {
// These are internal structures, so it's best to align everything to
// the largest unit size which is the size of a uint64_t.
pMemory = device->alloc_callbacks.pfnAllocation(device->alloc_callbacks.pUserData, size, sizeof(uint64_t), alloc_scope);
} else {
#endif
pMemory = malloc(size);
}
return pMemory;
}
void loader_device_heap_free(const struct loader_device *device, void *pMemory) {
if (pMemory != NULL) {
#if (DEBUG_DISABLE_APP_ALLOCATORS == 1)
{
#else
if (device && device->alloc_callbacks.pfnFree) {
device->alloc_callbacks.pfnFree(device->alloc_callbacks.pUserData, pMemory);
} else {
#endif
free(pMemory);
}
}
}
void *loader_device_heap_realloc(const struct loader_device *device, void *pMemory, size_t orig_size, size_t size,
VkSystemAllocationScope alloc_scope) {
void *pNewMem = NULL;
if (pMemory == NULL || orig_size == 0) {
pNewMem = loader_device_heap_alloc(device, size, alloc_scope);
} else if (size == 0) {
loader_device_heap_free(device, pMemory);
#if (DEBUG_DISABLE_APP_ALLOCATORS == 1)
#else
} else if (device && device->alloc_callbacks.pfnReallocation) {
// These are internal structures, so it's best to align everything to
// the largest unit size which is the size of a uint64_t.
pNewMem = device->alloc_callbacks.pfnReallocation(device->alloc_callbacks.pUserData, pMemory, size, sizeof(uint64_t),
alloc_scope);
#endif
} else {
pNewMem = realloc(pMemory, size);
}
return pNewMem;
}
// Environment variables
#if defined(__linux__) || defined(__APPLE__) || defined(__Fuchsia__) || defined(__QNXNTO__)
static inline bool IsHighIntegrity() {
return geteuid() != getuid() || getegid() != getgid();
}
static inline char *loader_getenv(const char *name, const struct loader_instance *inst) {
// No allocation of memory necessary for Linux, but we should at least touch
// the inst pointer to get rid of compiler warnings.
(void)inst;
return getenv(name);
}
static inline char *loader_secure_getenv(const char *name, const struct loader_instance *inst) {
#if defined(__APPLE__)
// Apple does not appear to have a secure getenv implementation.
// The main difference between secure getenv and getenv is that secure getenv
// returns NULL if the process is being run with elevated privileges by a normal user.
// The idea is to prevent the reading of malicious environment variables by a process
// that can do damage.
// This algorithm is derived from glibc code that sets an internal
// variable (__libc_enable_secure) if the process is running under setuid or setgid.
return IsHighIntegrity() ? NULL : loader_getenv(name, inst);
#elif defined(__Fuchsia__)
return loader_getenv(name, inst);
#else
// Linux
char *out;
#if defined(HAVE_SECURE_GETENV) && !defined(USE_UNSAFE_FILE_SEARCH)
(void)inst;
out = secure_getenv(name);
#elif defined(HAVE___SECURE_GETENV) && !defined(USE_UNSAFE_FILE_SEARCH)
(void)inst;
out = __secure_getenv(name);
#else
out = loader_getenv(name, inst);
#if !defined(USE_UNSAFE_FILE_SEARCH)
loader_log(inst, VULKAN_LOADER_INFO_BIT, 0, "Loader is using non-secure environment variable lookup for %s", name);
#endif
#endif
return out;
#endif
}
static inline void loader_free_getenv(char *val, const struct loader_instance *inst) {
// No freeing of memory necessary for Linux, but we should at least touch
// the val and inst pointers to get rid of compiler warnings.
(void)val;
(void)inst;
}
#elif defined(WIN32)
static inline bool IsHighIntegrity() {
HANDLE process_token;
if (OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY | TOKEN_QUERY_SOURCE, &process_token)) {
// Maximum possible size of SID_AND_ATTRIBUTES is maximum size of a SID + size of attributes DWORD.
uint8_t mandatory_label_buffer[SECURITY_MAX_SID_SIZE + sizeof(DWORD)];
DWORD buffer_size;
if (GetTokenInformation(process_token, TokenIntegrityLevel, mandatory_label_buffer, sizeof(mandatory_label_buffer),
&buffer_size) != 0) {
const TOKEN_MANDATORY_LABEL *mandatory_label = (const TOKEN_MANDATORY_LABEL *)mandatory_label_buffer;
const DWORD sub_authority_count = *GetSidSubAuthorityCount(mandatory_label->Label.Sid);
const DWORD integrity_level = *GetSidSubAuthority(mandatory_label->Label.Sid, sub_authority_count - 1);
CloseHandle(process_token);
return integrity_level > SECURITY_MANDATORY_MEDIUM_RID;
}
CloseHandle(process_token);
}
return false;
}
static inline char *loader_getenv(const char *name, const struct loader_instance *inst) {
char *retVal;
DWORD valSize;
valSize = GetEnvironmentVariableA(name, NULL, 0);
// valSize DOES include the null terminator, so for any set variable
// will always be at least 1. If it's 0, the variable wasn't set.
if (valSize == 0) return NULL;
// Allocate the space necessary for the registry entry
if (NULL != inst && NULL != inst->alloc_callbacks.pfnAllocation) {
retVal = (char *)inst->alloc_callbacks.pfnAllocation(inst->alloc_callbacks.pUserData, valSize, sizeof(char *),
VK_SYSTEM_ALLOCATION_SCOPE_COMMAND);
} else {
retVal = (char *)malloc(valSize);
}
if (NULL != retVal) {
GetEnvironmentVariableA(name, retVal, valSize);
}
return retVal;
}
static inline char *loader_secure_getenv(const char *name, const struct loader_instance *inst) {
#if !defined(USE_UNSAFE_FILE_SEARCH)
if (IsHighIntegrity()) {
loader_log(inst, VULKAN_LOADER_INFO_BIT, 0, "Loader is running with elevated permissions. Environment variable %s will be ignored",
name);
return NULL;
}
#endif
return loader_getenv(name, inst);
}
static inline void loader_free_getenv(char *val, const struct loader_instance *inst) {
if (NULL != inst && NULL != inst->alloc_callbacks.pfnFree) {
inst->alloc_callbacks.pfnFree(inst->alloc_callbacks.pUserData, val);
} else {
free((void *)val);
}
}
#else
static inline char *loader_getenv(const char *name, const struct loader_instance *inst) {
// stub func
(void)inst;
(void)name;
return NULL;
}
static inline void loader_free_getenv(char *val, const struct loader_instance *inst) {
// stub func
(void)val;
(void)inst;
}
#endif
void loader_log(const struct loader_instance *inst, VkFlags msg_type, int32_t msg_code, const char *format, ...) {
char msg[512];
char cmd_line_msg[512];
size_t cmd_line_size = sizeof(cmd_line_msg);
va_list ap;
int ret;
va_start(ap, format);
ret = vsnprintf(msg, sizeof(msg), format, ap);
if ((ret >= (int)sizeof(msg)) || ret < 0) {
msg[sizeof(msg) - 1] = '\0';
}
va_end(ap);
if (inst) {
VkDebugUtilsMessageSeverityFlagBitsEXT severity = 0;
VkDebugUtilsMessageTypeFlagsEXT type;
VkDebugUtilsMessengerCallbackDataEXT callback_data;
VkDebugUtilsObjectNameInfoEXT object_name;
if ((msg_type & VULKAN_LOADER_INFO_BIT) != 0 ||
(msg_type & VULKAN_LOADER_LAYER_BIT) != 0 ||
(msg_type & VULKAN_LOADER_IMPLEMENTATION_BIT ) != 0) {
severity = VK_DEBUG_UTILS_MESSAGE_SEVERITY_INFO_BIT_EXT;
} else if ((msg_type & VULKAN_LOADER_WARN_BIT) != 0) {
severity = VK_DEBUG_UTILS_MESSAGE_SEVERITY_WARNING_BIT_EXT;
} else if ((msg_type & VULKAN_LOADER_ERROR_BIT) != 0) {
severity = VK_DEBUG_UTILS_MESSAGE_SEVERITY_ERROR_BIT_EXT;
} else if ((msg_type & VULKAN_LOADER_DEBUG_BIT) != 0) {
severity = VK_DEBUG_UTILS_MESSAGE_SEVERITY_VERBOSE_BIT_EXT;
}
if ((msg_type & VULKAN_LOADER_PERF_BIT) != 0) {
type = VK_DEBUG_UTILS_MESSAGE_TYPE_PERFORMANCE_BIT_EXT;
} else {
type = VK_DEBUG_UTILS_MESSAGE_TYPE_GENERAL_BIT_EXT;
}
callback_data.sType = VK_STRUCTURE_TYPE_DEBUG_UTILS_MESSENGER_CALLBACK_DATA_EXT;
callback_data.pNext = NULL;
callback_data.flags = 0;
callback_data.pMessageIdName = "Loader Message";
callback_data.messageIdNumber = 0;
callback_data.pMessage = msg;
callback_data.queueLabelCount = 0;
callback_data.pQueueLabels = NULL;
callback_data.cmdBufLabelCount = 0;
callback_data.pCmdBufLabels = NULL;
callback_data.objectCount = 1;
callback_data.pObjects = &object_name;
object_name.sType = VK_STRUCTURE_TYPE_DEBUG_UTILS_OBJECT_NAME_INFO_EXT;
object_name.pNext = NULL;
object_name.objectType = VK_OBJECT_TYPE_INSTANCE;
object_name.objectHandle = (uint64_t)(uintptr_t)inst;
object_name.pObjectName = NULL;
util_SubmitDebugUtilsMessageEXT(inst, severity, type, &callback_data);
}
if (!(msg_type & g_loader_debug)) {
return;
}
cmd_line_msg[0] = '\0';
cmd_line_size -= 1;
size_t original_size = cmd_line_size;
if ((msg_type & VULKAN_LOADER_ERROR_BIT) != 0) {
strncat(cmd_line_msg, "ERROR", cmd_line_size);
cmd_line_size -= 5;
}
if ((msg_type & VULKAN_LOADER_WARN_BIT) != 0) {
if (cmd_line_size != original_size) {
strncat(cmd_line_msg, " | ", cmd_line_size);
cmd_line_size -= 3;
}
strncat(cmd_line_msg, "WARNING", cmd_line_size);
cmd_line_size -= 7;
}
if ((msg_type & VULKAN_LOADER_LAYER_BIT) != 0) {
if (cmd_line_size != original_size) {
strncat(cmd_line_msg, " | ", cmd_line_size);
cmd_line_size -= 3;
}
strncat(cmd_line_msg, "LAYER", cmd_line_size);
cmd_line_size -= 5;
}
if ((msg_type & VULKAN_LOADER_IMPLEMENTATION_BIT) != 0) {
if (cmd_line_size != original_size) {
strncat(cmd_line_msg, " | ", cmd_line_size);
cmd_line_size -= 3;
}
strncat(cmd_line_msg, "IMPLEM", cmd_line_size);
cmd_line_size -= 6;
}
if ((msg_type & VULKAN_LOADER_PERF_BIT) != 0) {
if (cmd_line_size != original_size) {
strncat(cmd_line_msg, " | ", cmd_line_size);
cmd_line_size -= 3;
}
strncat(cmd_line_msg, "PERF", cmd_line_size);
cmd_line_size -= 4;
}
if ((msg_type & VULKAN_LOADER_INFO_BIT) != 0) {
if (cmd_line_size != original_size) {
strncat(cmd_line_msg, " | ", cmd_line_size);
cmd_line_size -= 3;
}
strncat(cmd_line_msg, "INFO", cmd_line_size);
cmd_line_size -= 4;
}
if ((msg_type & VULKAN_LOADER_DEBUG_BIT) != 0) {
if (cmd_line_size != original_size) {
strncat(cmd_line_msg, " | ", cmd_line_size);
cmd_line_size -= 3;
}
strncat(cmd_line_msg, "DEBUG", cmd_line_size);
cmd_line_size -= 5;
}
if (cmd_line_size != original_size) {
strncat(cmd_line_msg, ": ", cmd_line_size);
cmd_line_size -= 2;
}
if (0 < cmd_line_size) {
// If the message is too long, trim it down
if (strlen(msg) > cmd_line_size) {
msg[cmd_line_size - 1] = '\0';
}
strncat(cmd_line_msg, msg, cmd_line_size);
} else {
// Shouldn't get here, but check to make sure if we've already overrun
// the string boundary
assert(false);
}
#if defined(WIN32)
OutputDebugString(cmd_line_msg);
OutputDebugString("\n");
#endif
fputs(cmd_line_msg, stderr);
fputc('\n', stderr);
}
// log error from to library loading
void loader_log_load_library_error(const struct loader_instance *inst, const char *filename) {
const char *error_message = loader_platform_open_library_error(filename);
// If the error is due to incompatible ELF class, report it with INFO level
// Discussed in Github issue 262
VkFlags err_flag = VULKAN_LOADER_ERROR_BIT;
if (strstr(error_message, "wrong ELF class:") != NULL) {
err_flag = VULKAN_LOADER_INFO_BIT;
}
loader_log(inst, err_flag, 0, error_message);
}
VKAPI_ATTR VkResult VKAPI_CALL vkSetInstanceDispatch(VkInstance instance, void *object) {
struct loader_instance *inst = loader_get_instance(instance);
if (!inst) {
loader_log(inst, VULKAN_LOADER_ERROR_BIT, 0, "vkSetInstanceDispatch: Can not retrieve Instance dispatch table.");
return VK_ERROR_INITIALIZATION_FAILED;
}
loader_set_dispatch(object, inst->disp);
return VK_SUCCESS;
}
VKAPI_ATTR VkResult VKAPI_CALL vkSetDeviceDispatch(VkDevice device, void *object) {
struct loader_device *dev;
struct loader_icd_term *icd_term = loader_get_icd_and_device(device, &dev, NULL);
if (NULL == icd_term) {
return VK_ERROR_INITIALIZATION_FAILED;
}
loader_set_dispatch(object, &dev->loader_dispatch);
return VK_SUCCESS;
}
#if defined(_WIN32)
// Append the JSON path data to the list and allocate/grow the list if it's not large enough.
// Function returns true if filename was appended to reg_data list.
// Caller should free reg_data.
static bool loaderAddJsonEntry(const struct loader_instance *inst,
char **reg_data, // list of JSON files
PDWORD total_size, // size of reg_data
LPCSTR key_name, // key name - used for debug prints - i.e. VulkanDriverName
DWORD key_type, // key data type
LPSTR json_path, // JSON string to add to the list reg_data
DWORD json_size, // size in bytes of json_path
VkResult *result) {
// Check for and ignore duplicates.
if (*reg_data && strstr(*reg_data, json_path)) {
// Success. The json_path is already in the list.
return true;
}
if (NULL == *reg_data) {
*reg_data = loader_instance_heap_alloc(inst, *total_size, VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
if (NULL == *reg_data) {
loader_log(inst, VULKAN_LOADER_ERROR_BIT, 0,
"loaderAddJsonEntry: Failed to allocate space for registry data for key %s", json_path);
*result = VK_ERROR_OUT_OF_HOST_MEMORY;
return false;
}
*reg_data[0] = '\0';
} else if (strlen(*reg_data) + json_size + 1 > *total_size) {
void *new_ptr =
loader_instance_heap_realloc(inst, *reg_data, *total_size, *total_size * 2, VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
if (NULL == new_ptr) {
loader_log(inst, VULKAN_LOADER_ERROR_BIT, 0,
"loaderAddJsonEntry: Failed to reallocate space for registry value of size %d for key %s", *total_size * 2,
json_path);
*result = VK_ERROR_OUT_OF_HOST_MEMORY;
return false;
}
*reg_data = new_ptr;
*total_size *= 2;
}
for (char *curr_filename = json_path; curr_filename[0] != '\0'; curr_filename += strlen(curr_filename) + 1) {
if (strlen(*reg_data) == 0) {
(void)snprintf(*reg_data, json_size + 1, "%s", curr_filename);
} else {
(void)snprintf(*reg_data + strlen(*reg_data), json_size + 2, "%c%s", PATH_SEPARATOR, curr_filename);
}
loader_log(inst, VULKAN_LOADER_INFO_BIT, 0, "%s: Located json file \"%s\" from PnP registry: %s", __FUNCTION__,
curr_filename, key_name);
if (key_type == REG_SZ) {
break;
}
}
return true;
}
// Find the list of registry files (names VulkanDriverName/VulkanDriverNameWow) in hkr.
//
// This function looks for filename in given device handle, filename is then added to return list
// function return true if filename was appended to reg_data list
// If error occurs result is updated with failure reason
bool loaderGetDeviceRegistryEntry(const struct loader_instance *inst, char **reg_data, PDWORD total_size, DEVINST dev_id,
LPCSTR value_name, VkResult *result) {
HKEY hkrKey = INVALID_HANDLE_VALUE;
DWORD requiredSize, data_type;
char *manifest_path = NULL;
bool found = false;
assert(reg_data != NULL && "loaderGetDeviceRegistryEntry: reg_data is a NULL pointer");
assert(total_size != NULL && "loaderGetDeviceRegistryEntry: total_size is a NULL pointer");
CONFIGRET status = CM_Open_DevNode_Key(dev_id, KEY_QUERY_VALUE, 0, RegDisposition_OpenExisting, &hkrKey, CM_REGISTRY_SOFTWARE);
if (status != CR_SUCCESS) {
loader_log(inst, VULKAN_LOADER_WARN_BIT, 0, "loaderGetDeviceRegistryEntry: Failed to open registry key for DeviceID(%d)",
dev_id);
*result = VK_ERROR_INCOMPATIBLE_DRIVER;
return false;
}
// query value
LSTATUS ret = RegQueryValueEx(
hkrKey,
value_name,
NULL,
NULL,
NULL,
&requiredSize);
if (ret != ERROR_SUCCESS) {
if (ret == ERROR_FILE_NOT_FOUND) {
loader_log(inst, VULKAN_LOADER_INFO_BIT, 0,
"loaderGetDeviceRegistryEntry: Device ID(%d) Does not contain a value for \"%s\"", dev_id, value_name);
} else {
loader_log(inst, VULKAN_LOADER_INFO_BIT, 0,
"loaderGetDeviceRegistryEntry: DeviceID(%d) Failed to obtain %s size", dev_id, value_name);
}
goto out;
}
manifest_path = loader_instance_heap_alloc(inst, requiredSize, VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
if (manifest_path == NULL) {
loader_log(inst, VULKAN_LOADER_ERROR_BIT, 0,
"loaderGetDeviceRegistryEntry: Failed to allocate space for DriverName.");
*result = VK_ERROR_OUT_OF_HOST_MEMORY;
goto out;
}
ret = RegQueryValueEx(
hkrKey,
value_name,
NULL,
&data_type,
(BYTE *)manifest_path,
&requiredSize
);
if (ret != ERROR_SUCCESS) {
loader_log(inst, VULKAN_LOADER_ERROR_BIT, 0, "loaderGetDeviceRegistryEntry: DeviceID(%d) Failed to obtain %s", value_name);
*result = VK_ERROR_INCOMPATIBLE_DRIVER;
goto out;
}
if (data_type != REG_SZ && data_type != REG_MULTI_SZ) {
loader_log(inst, VULKAN_LOADER_ERROR_BIT, 0,
"loaderGetDeviceRegistryEntry: Invalid %s data type. Expected REG_SZ or REG_MULTI_SZ.", value_name);
*result = VK_ERROR_INCOMPATIBLE_DRIVER;
goto out;
}
found = loaderAddJsonEntry(inst, reg_data, total_size, value_name, data_type, manifest_path, requiredSize, result);
out:
if (manifest_path != NULL) {
loader_instance_heap_free(inst, manifest_path);
}
RegCloseKey(hkrKey);
return found;
}
// Find the list of registry files (names VulkanDriverName/VulkanDriverNameWow) in hkr .
//
// This function looks for display devices and childish software components
// for a list of files which are added to a returned list (function return
// value).
// Function return is a string with a ';' separated list of filenames.
// Function return is NULL if no valid name/value pairs are found in the key,
// or the key is not found.
//
// *reg_data contains a string list of filenames as pointer.
// When done using the returned string list, the caller should free the pointer.
VkResult loaderGetDeviceRegistryFiles(const struct loader_instance *inst, char **reg_data, PDWORD reg_data_size,
LPCSTR value_name) {
static const wchar_t *softwareComponentGUID = L"{5c4c3332-344d-483c-8739-259e934c9cc8}";
static const wchar_t *displayGUID = L"{4d36e968-e325-11ce-bfc1-08002be10318}";
#ifdef CM_GETIDLIST_FILTER_PRESENT
const ULONG flags = CM_GETIDLIST_FILTER_CLASS | CM_GETIDLIST_FILTER_PRESENT;
#else
const ULONG flags = 0x300;
#endif
wchar_t childGuid[MAX_GUID_STRING_LEN + 2]; // +2 for brackets {}
ULONG childGuidSize = sizeof(childGuid);
DEVINST devID = 0, childID = 0;
wchar_t *pDeviceNames = NULL;
ULONG deviceNamesSize = 0;
VkResult result = VK_SUCCESS;
bool found = false;
assert(reg_data != NULL && "loaderGetDeviceRegistryFiles: reg_data is NULL");
// if after obtaining the DeviceNameSize, new device is added start over
do {
CM_Get_Device_ID_List_SizeW(&deviceNamesSize, displayGUID, flags);
if (pDeviceNames != NULL) {
loader_instance_heap_free(inst, pDeviceNames);
}
pDeviceNames = loader_instance_heap_alloc(inst, deviceNamesSize * sizeof(wchar_t), VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
if (pDeviceNames == NULL) {
loader_log(inst, VULKAN_LOADER_ERROR_BIT, 0,
"loaderGetDeviceRegistryFiles: Failed to allocate space for display device names.");
result = VK_ERROR_OUT_OF_HOST_MEMORY;
return result;
}
} while (CM_Get_Device_ID_ListW(displayGUID, pDeviceNames, deviceNamesSize, flags) == CR_BUFFER_SMALL);
if (pDeviceNames) {
for (wchar_t *deviceName = pDeviceNames; *deviceName; deviceName += wcslen(deviceName) + 1) {
CONFIGRET status = CM_Locate_DevNodeW(&devID, deviceName, CM_LOCATE_DEVNODE_NORMAL);
if (CR_SUCCESS != status) {
loader_log(inst, VULKAN_LOADER_ERROR_BIT, 0, "loaderGetDeviceRegistryFiles: failed to open DevNode %ls",
deviceName);
continue;
}
ULONG ulStatus, ulProblem;
status = CM_Get_DevNode_Status(&ulStatus, &ulProblem, devID, 0);
if (CR_SUCCESS != status) {
loader_log(inst, VULKAN_LOADER_ERROR_BIT, 0, "loaderGetDeviceRegistryFiles: failed to probe device status %ls",
deviceName);
continue;
}
if ((ulStatus & DN_HAS_PROBLEM) && (ulProblem == CM_PROB_NEED_RESTART || ulProblem == DN_NEED_RESTART)) {
loader_log(inst, VULKAN_LOADER_INFO_BIT, 0,
"loaderGetDeviceRegistryFiles: device %ls is pending reboot, skipping ...", deviceName);
continue;
}
loader_log(inst, VULKAN_LOADER_INFO_BIT, 0, "loaderGetDeviceRegistryFiles: opening device %ls", deviceName);
if (loaderGetDeviceRegistryEntry(inst, reg_data, reg_data_size, devID, value_name, &result)) {
found = true;
continue;
} else if (result == VK_ERROR_OUT_OF_HOST_MEMORY) {
break;
}
status = CM_Get_Child(&childID, devID, 0);
if (status != CR_SUCCESS) {
loader_log(inst, VULKAN_LOADER_INFO_BIT, 0, "loaderGetDeviceRegistryFiles: unable to open child-device error:%d",
status);
continue;
}
do {
wchar_t buffer[MAX_DEVICE_ID_LEN];
CM_Get_Device_IDW(childID, buffer, MAX_DEVICE_ID_LEN, 0);
loader_log(inst, VULKAN_LOADER_INFO_BIT, 0, "loaderGetDeviceRegistryFiles: Opening child device %d - %ls", childID,
buffer);
status = CM_Get_DevNode_Registry_PropertyW(childID, CM_DRP_CLASSGUID, NULL, &childGuid, &childGuidSize, 0);
if (status != CR_SUCCESS) {
loader_log(inst, VULKAN_LOADER_ERROR_BIT, 0,
"loaderGetDeviceRegistryFiles: unable to obtain GUID for:%d error:%d", childID, status);
result = VK_ERROR_INCOMPATIBLE_DRIVER;
continue;
}
if (wcscmp(childGuid, softwareComponentGUID) != 0) {
loader_log(inst, VULKAN_LOADER_DEBUG_BIT, 0,
"loaderGetDeviceRegistryFiles: GUID for %d is not SoftwareComponent skipping", childID);
continue;
}
if (loaderGetDeviceRegistryEntry(inst, reg_data, reg_data_size, childID, value_name, &result)) {
found = true;
break; // check next-display-device
}
} while (CM_Get_Sibling(&childID, childID, 0) == CR_SUCCESS);
}
loader_instance_heap_free(inst, pDeviceNames);
}
if (!found && result != VK_ERROR_OUT_OF_HOST_MEMORY) {
result = VK_ERROR_INCOMPATIBLE_DRIVER;
}
return result;
}
static char *loader_get_next_path(char *path);
// Find the list of registry files (names within a key) in key "location".
//
// This function looks in the registry (hive = DEFAULT_VK_REGISTRY_HIVE) key as
// given in "location"
// for a list or name/values which are added to a returned list (function return
// value).
// The DWORD values within the key must be 0 or they are skipped.
// Function return is a string with a ';' separated list of filenames.
// Function return is NULL if no valid name/value pairs are found in the key,
// or the key is not found.
//
// *reg_data contains a string list of filenames as pointer.
// When done using the returned string list, the caller should free the pointer.
VkResult loaderGetRegistryFiles(const struct loader_instance *inst, char *location, bool use_secondary_hive, char **reg_data,
PDWORD reg_data_size) {
// This list contains all of the allowed ICDs. This allows us to verify that a device is actually present from the vendor
// specified. This does disallow other vendors, but any new driver should use the device-specific registries anyway.
static const struct {
const char *filename;
int vendor_id;
} known_drivers[] = {
#if defined(_WIN64)
{
.filename = "igvk64.json",
.vendor_id = 0x8086,
},
{
.filename = "nv-vk64.json",
.vendor_id = 0x10de,
},
{
.filename = "amd-vulkan64.json",
.vendor_id = 0x1002,
},
{
.filename = "amdvlk64.json",
.vendor_id = 0x1002,
},
#else
{
.filename = "igvk32.json",
.vendor_id = 0x8086,
},
{
.filename = "nv-vk32.json",
.vendor_id = 0x10de,
},
{
.filename = "amd-vulkan32.json",
.vendor_id = 0x1002,
},
{
.filename = "amdvlk32.json",
.vendor_id = 0x1002,
},
#endif
};
LONG rtn_value;
HKEY hive = DEFAULT_VK_REGISTRY_HIVE, key;
DWORD access_flags;
char name[2048];
char *loc = location;
char *next;
DWORD name_size = sizeof(name);
DWORD value;
DWORD value_size = sizeof(value);
VkResult result = VK_SUCCESS;
bool found = false;
IDXGIFactory1 *dxgi_factory = NULL;
bool is_driver = !strcmp(location, VK_DRIVERS_INFO_REGISTRY_LOC);
assert(reg_data != NULL && "loaderGetRegistryFiles: reg_data is a NULL pointer");
if (is_driver) {
HRESULT hres = fpCreateDXGIFactory1(&IID_IDXGIFactory1, (void **)&dxgi_factory);
if (hres != S_OK) {
loader_log(
inst, VULKAN_LOADER_WARN_BIT, 0,
"loaderGetRegistryFiles: Failed to create dxgi factory for ICD registry verification. No ICDs will be added from "
"legacy registry locations");
goto out;
}
}
while (*loc) {
next = loader_get_next_path(loc);
access_flags = KEY_QUERY_VALUE;
rtn_value = RegOpenKeyEx(hive, loc, 0, access_flags, &key);
if (ERROR_SUCCESS == rtn_value) {
for (DWORD idx = 0;
(rtn_value = RegEnumValue(key, idx++, name, &name_size, NULL, NULL, (LPBYTE)&value, &value_size)) == ERROR_SUCCESS;
name_size = sizeof(name), value_size = sizeof(value)) {
if (value_size == sizeof(value) && value == 0) {
if (NULL == *reg_data) {
*reg_data = loader_instance_heap_alloc(inst, *reg_data_size, VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
if (NULL == *reg_data) {
loader_log(inst, VULKAN_LOADER_ERROR_BIT, 0,
"loaderGetRegistryFiles: Failed to allocate space for registry data for key %s", name);
RegCloseKey(key);
result = VK_ERROR_OUT_OF_HOST_MEMORY;
goto out;
}
*reg_data[0] = '\0';
} else if (strlen(*reg_data) + name_size + 1 > *reg_data_size) {
void *new_ptr = loader_instance_heap_realloc(inst, *reg_data, *reg_data_size, *reg_data_size * 2,
VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
if (NULL == new_ptr) {
loader_log(
inst, VULKAN_LOADER_ERROR_BIT, 0,
"loaderGetRegistryFiles: Failed to reallocate space for registry value of size %d for key %s",
*reg_data_size * 2, name);
RegCloseKey(key);
result = VK_ERROR_OUT_OF_HOST_MEMORY;
goto out;
}
*reg_data = new_ptr;
*reg_data_size *= 2;
}
// We've now found a json file. If this is an ICD, we still need to check if there is actually a device
// that matches this ICD
loader_log(inst, VULKAN_LOADER_INFO_BIT, 0, "Located json file \"%s\" from registry \"%s\\%s\"", name,
hive == DEFAULT_VK_REGISTRY_HIVE ? DEFAULT_VK_REGISTRY_HIVE_STR : SECONDARY_VK_REGISTRY_HIVE_STR,
location);
if (is_driver) {
int i;
for (i = 0; i < sizeof(known_drivers) / sizeof(known_drivers[0]); ++i) {
if (!strcmp(name + strlen(name) - strlen(known_drivers[i].filename), known_drivers[i].filename)) {
break;
}
}
if (i == sizeof(known_drivers) / sizeof(known_drivers[0])) {
loader_log(inst, VULKAN_LOADER_INFO_BIT, 0,
"Driver %s is not recognized as a known driver. It will be assumed to be active", name);
} else {
bool found_gpu = false;
for (int j = 0;; ++j) {
IDXGIAdapter1 *adapter;
HRESULT hres = dxgi_factory->lpVtbl->EnumAdapters1(dxgi_factory, j, &adapter);
if (hres == DXGI_ERROR_NOT_FOUND) {
break;
} else if (hres != S_OK) {
loader_log(inst, VULKAN_LOADER_WARN_BIT, 0,
"Failed to enumerate DXGI adapters at index %d. As a result, drivers may be skipped",
j);
continue;
}
DXGI_ADAPTER_DESC1 description;
hres = adapter->lpVtbl->GetDesc1(adapter, &description);
if (hres != S_OK) {
loader_log(
inst, VULKAN_LOADER_INFO_BIT, 0,
"Failed to get DXGI adapter information at index %d. As a result, drivers may be skipped",
j);
continue;
}
if (description.VendorId == known_drivers[i].vendor_id) {
found_gpu = true;
break;
}
}
if (!found_gpu) {