1 files changed, 0 insertions, 229 deletions
diff --git a/externals/libadrenotools/src/hook/hook_impl.cpp b/externals/libadrenotools/src/hook/hook_impl.cpp
deleted file mode 100644
index 50e79a946b..0000000000
--- a/externals/libadrenotools/src/hook/hook_impl.cpp
+++ /dev/null
@@ -1,229 +0,0 @@
-#include <initializer_list>
-#include <string>
-#include <cstdio>
-#include <cstring>
-#include <dlfcn.h>
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#include <android_linker_ns.h>
-#include <android/dlext.h>
-#include <android/log.h>
-#include "kgsl.h"
-#include "hook_impl_params.h"
-#include "hook_impl.h"
-
-#define TAG "hook_impl"
-#define LOGI(fmt, ...) __android_log_print(ANDROID_LOG_INFO, TAG, fmt, ##__VA_ARGS__)
-
-const HookImplParams *hook_params; //!< Bunch of info needed to load/patch the driver
-int (*gsl_memory_alloc_pure_sym)(uint32_t, uint32_t, void *);
-int (*gsl_memory_alloc_pure_64_sym)(uint64_t, uint32_t, void *);
-int (*gsl_memory_free_pure_sym)(void *);
-int kgsl_fd;
-
-using gsl_memory_alloc_pure_t = decltype(gsl_memory_alloc_pure_sym);
-using gsl_memory_alloc_pure_64_t = decltype(gsl_memory_alloc_pure_64_sym);
-using gsl_memory_free_pure_t = decltype(gsl_memory_free_pure_sym);
-
-__attribute__((visibility("default"))) void init_hook_param(const void *param) {
-    hook_params = reinterpret_cast<const HookImplParams *>(param);
-}
-
-__attribute__((visibility("default"))) void init_gsl(void *alloc, void *alloc64, void *free) {
-    gsl_memory_alloc_pure_sym = reinterpret_cast<gsl_memory_alloc_pure_t>(alloc);
-    gsl_memory_alloc_pure_64_sym = reinterpret_cast<gsl_memory_alloc_pure_64_t>(alloc64);
-    gsl_memory_free_pure_sym = reinterpret_cast<gsl_memory_free_pure_t>(free);
-}
-
-__attribute__((visibility("default"))) void *hook_android_dlopen_ext(const char *filename, int flags, const android_dlextinfo *extinfo) {
-    auto fallback{[&]() {
-        LOGI("hook_android_dlopen_ext: falling back!");
-        return android_dlopen_ext(filename, flags, extinfo);
-    }};
-
-    LOGI("hook_android_dlopen_ext: filename: %s", filename);
-
-    // Ignore non-vulkan libraries
-    if (!strstr(filename, "vulkan."))
-        return android_dlopen_ext(filename, flags, extinfo);
-
-    if (extinfo->library_namespace == nullptr || !(extinfo->flags & ANDROID_DLEXT_USE_NAMESPACE)) {
-        LOGI("hook_android_dlopen_ext: hook failed: namespace not supplied!");
-        return fallback();
-    }
-
-    // customDriverDir will be empty if ADRENOTOOLS_DRIVER_CUSTOM isn't set therefore it's fine to have either way
-    auto driverNs{android_create_namespace(filename, hook_params->customDriverDir.c_str(),
-                                           hook_params->hookLibDir.c_str(), ANDROID_NAMESPACE_TYPE_SHARED,
-                                           nullptr, extinfo->library_namespace)};
-    if (!driverNs) {
-        LOGI("hook_android_dlopen_ext: hook failed: namespace not supplied!");
-        return fallback();
-    }
-
-    // We depend on libandroid which is unlikely to be in the supplied driver namespace so we have to link it over
-    android_link_namespaces(driverNs, nullptr, "libandroid.so");
-
-    // Preload ourself, a new instance will be created since we have different linker ancestory
-    // If we don't preload we get a weird issue where despite being in NEEDED of the hook lib the hook's symbols will overwrite ours and cause an infinite loop
-    auto hookImpl{linkernsbypass_namespace_dlopen("libhook_impl.so", RTLD_NOW, driverNs)};
-    if (!hookImpl)
-        return nullptr;
-
-    // Pass parameters to ourself
-    auto initHookParam{reinterpret_cast<void (*)(const void *)>(dlsym(hookImpl, "init_hook_param"))};
-    if (!initHookParam)
-        return nullptr;
-
-    initHookParam(hook_params);
-
-    if (hook_params->featureFlags & ADRENOTOOLS_DRIVER_FILE_REDIRECT) {
-        if (!linkernsbypass_namespace_dlopen("libfile_redirect_hook.so", RTLD_GLOBAL, driverNs)) {
-            LOGI("hook_android_dlopen_ext: hook failed: failed to apply libfopen_redirect_hook!");
-            return fallback();
-        }
-
-        LOGI("hook_android_dlopen_ext: applied libfile_redirect_hook");
-    }
-
-    // Use our new namespace to load the vulkan driver
-    auto newExtinfo{*extinfo};
-    newExtinfo.library_namespace = driverNs;
-
-    if (hook_params->featureFlags & ADRENOTOOLS_DRIVER_GPU_MAPPING_IMPORT) {
-        if (!linkernsbypass_namespace_dlopen("libgsl_alloc_hook.so", RTLD_GLOBAL, driverNs)) {
-            LOGI("hook_android_dlopen_ext: hook failed: failed to apply libgsl_alloc_hook!");
-            return fallback();
-        }
-
-        auto libgslHandle{android_dlopen_ext("vkbgsl.so", RTLD_NOW, &newExtinfo)};
-        if (!libgslHandle) {
-            libgslHandle = android_dlopen_ext("notgsl.so", RTLD_NOW, &newExtinfo);
-            if (!libgslHandle)
-                libgslHandle = android_dlopen_ext("libgsl.so", RTLD_NOW, &newExtinfo);
-        }
-
-        if (libgslHandle) {
-            gsl_memory_alloc_pure_sym = reinterpret_cast<decltype(gsl_memory_alloc_pure_sym)>(dlsym(libgslHandle, "gsl_memory_alloc_pure"));
-            gsl_memory_alloc_pure_64_sym = reinterpret_cast<decltype(gsl_memory_alloc_pure_64_sym)>(dlsym(libgslHandle, "gsl_memory_alloc_pure_64"));
-            gsl_memory_free_pure_sym = reinterpret_cast<decltype(gsl_memory_free_pure_sym)>(dlsym(libgslHandle, "gsl_memory_free_pure"));
-            if ((gsl_memory_alloc_pure_sym || gsl_memory_alloc_pure_64_sym) && gsl_memory_free_pure_sym) {
-                auto initGsl{reinterpret_cast<void (*)(gsl_memory_alloc_pure_t, gsl_memory_alloc_pure_64_t, gsl_memory_free_pure_t)>(dlsym(hookImpl, "init_gsl"))};
-                if (!initGsl)
-                    return fallback();
-
-                initGsl(gsl_memory_alloc_pure_sym, gsl_memory_alloc_pure_64_sym, gsl_memory_free_pure_sym);
-                LOGI("hook_android_dlopen_ext: applied libgsl_alloc_hook");
-                hook_params->nextGpuMapping->gpu_addr = ADRENOTOOLS_GPU_MAPPING_SUCCEEDED_MAGIC;
-            }
-        }
-
-        if (!((gsl_memory_alloc_pure_sym || gsl_memory_alloc_pure_64_sym) && gsl_memory_free_pure_sym))
-            LOGI("hook_android_dlopen_ext: hook failed: failed to apply libgsl_alloc_hook!");
-    }
-
-    // TODO: If there is already an instance of a Vulkan driver loaded hooks won't be applied, this will only be the case for skiavk generally
-    // To fix this we would need to search /proc/self/maps for the file to a loaded instance of the library in order to read it to patch the soname and load it uniquely
-    if (hook_params->featureFlags & ADRENOTOOLS_DRIVER_CUSTOM) {
-        LOGI("hook_android_dlopen_ext: loading custom driver: %s%s", hook_params->customDriverDir.c_str(), hook_params->customDriverName.c_str());
-        void *handle{android_dlopen_ext(hook_params->customDriverName.c_str(), flags, &newExtinfo)};
-        if (!handle) {
-            LOGI("hook_android_dlopen_ext: hook failed: failed to load custom driver: %s!", dlerror());
-            return fallback();
-        }
-
-        return handle;
-    } else {
-        LOGI("hook_android_dlopen_ext: loading default driver: %s", filename);
-        return android_dlopen_ext(filename, flags, &newExtinfo);
-    }
-}
-
-__attribute__((visibility("default"))) void *hook_android_load_sphal_library(const char *filename, int flags) {
-    LOGI("hook_android_load_sphal_library: filename: %s", filename);
-
-    // https://android.googlesource.com/platform/system/core/+/master/libvndksupport/linker.cpp
-    for (const char *name : {"sphal", "vendor", "default"}) {
-        if (auto vendorNs{android_get_exported_namespace(name)}) {
-            android_dlextinfo dlextinfo{
-                .flags = ANDROID_DLEXT_USE_NAMESPACE,
-                .library_namespace = vendorNs,
-            };
-
-            return hook_android_dlopen_ext(filename, flags, &dlextinfo);
-        }
-    }
-
-    return nullptr;
-}
-
-__attribute__((visibility("default"))) FILE *hook_fopen(const char *filename, const char *mode) {
-    if (!strncmp("/proc", filename, 5) || !strncmp("/sys", filename, 4)) {
-        LOGI("hook_fopen: passthrough: %s", filename);
-        return fopen(filename, mode);
-    }
-
-    auto replacement{hook_params->fileRedirectDir + filename};
-    LOGI("hook_fopen: %s -> %s", filename, replacement.c_str());
-
-    return fopen(replacement.c_str(), mode);
-}
-
-static constexpr uintptr_t GslMemDescImportedPrivMagic{0xdeadb33f};
-struct GslMemDesc {
-    void *hostptr;
-    uint64_t gpuaddr;
-    uint64_t size;
-    uint64_t flags;
-    uintptr_t priv;
-};
-
-__attribute__((visibility("default"))) int hook_gsl_memory_alloc_pure_64(uint64_t size, uint32_t flags, void *memDesc) {
-    auto gslMemDesc{reinterpret_cast<GslMemDesc *>(memDesc)};
-    if (hook_params->nextGpuMapping && hook_params->nextGpuMapping->size == size && (hook_params->nextGpuMapping->flags & flags) == hook_params->nextGpuMapping->flags) {
-        auto &nextMapping{*hook_params->nextGpuMapping};
-
-        gslMemDesc->hostptr = nextMapping.host_ptr;
-        gslMemDesc->gpuaddr = nextMapping.gpu_addr;
-        gslMemDesc->size = nextMapping.size;
-        gslMemDesc->flags = nextMapping.flags;
-        gslMemDesc->priv = GslMemDescImportedPrivMagic;
-        hook_params->nextGpuMapping->size = 0;
-        hook_params->nextGpuMapping->gpu_addr = ADRENOTOOLS_GPU_MAPPING_SUCCEEDED_MAGIC;
-        return 0;
-    } else {
-        if (gsl_memory_alloc_pure_64_sym)
-            return gsl_memory_alloc_pure_64_sym(size, flags, gslMemDesc);
-        else
-            return gsl_memory_alloc_pure_sym((uint32_t)size, flags, gslMemDesc);
-    }
-}
-
-__attribute__((visibility("default"))) int hook_gsl_memory_free_pure(void *memDesc) {
-    auto gslMemDesc{reinterpret_cast<GslMemDesc *>(memDesc)};
-
-    if (gslMemDesc->priv == GslMemDescImportedPrivMagic) {
-        if (!kgsl_fd)
-            kgsl_fd = open("/dev/kgsl-3d0", O_RDWR);
-
-        kgsl_gpumem_get_info info{
-            .gpuaddr = gslMemDesc->gpuaddr
-        };
-
-        if (ioctl(kgsl_fd, IOCTL_KGSL_GPUMEM_GET_INFO, &info) < 0) {
-            LOGI("IOCTL_KGSL_GPUMEM_GET_INFO failed");
-            return 0;
-        }
-
-        kgsl_gpuobj_free args{
-            .id = info.id,
-        };
-
-        if (ioctl(kgsl_fd, IOCTL_KGSL_GPUOBJ_FREE, &args) < 0)
-            LOGI("IOCTL_KGSL_GPUOBJ_FREE failed");
-
-        return 0;
-    } else {
-        return gsl_memory_free_pure_sym(memDesc);
-    }
-}