Inject our own NVML

2 files changed, 78 insertions, 20 deletions

diff --git a/zluda_redirect/src/lib.rs b/zluda_redirect/src/lib.rs
index 5de7530..bfd8200 100644
--- a/zluda_redirect/src/lib.rs
+++ b/zluda_redirect/src/lib.rs
@@ -55,8 +55,12 @@ include!("payload_guid.rs");
 
 const NVCUDA_UTF8: &'static str = "NVCUDA.DLL";
 const NVCUDA_UTF16: &[u16] = wch!("NVCUDA.DLL");
+const NVML_UTF8: &'static str = "NVML.DLL";
+const NVML_UTF16: &[u16] = wch!("NVML.DLL");
 static mut ZLUDA_PATH_UTF8: Vec<u8> = Vec::new();
 static mut ZLUDA_PATH_UTF16: Option<&'static [u16]> = None;
+static mut ZLUDA_ML_PATH_UTF8: Vec<u8> = Vec::new();
+static mut ZLUDA_ML_PATH_UTF16: Option<&'static [u16]> = None;
 static mut DETACH_LOAD_LIBRARY: bool = false;
 static mut NVCUDA_ORIGINAL_MODULE: HMODULE = ptr::null_mut();
 static mut CUINIT_ORIGINAL_FN: FARPROC = ptr::null_mut();
@@ -158,6 +162,8 @@ unsafe extern "system" fn ZludaLoadLibraryW_NoRedirect(lpLibFileName: LPCWSTR) -
 unsafe extern "system" fn ZludaLoadLibraryA(lpLibFileName: LPCSTR) -> HMODULE {
     let nvcuda_file_name = if is_nvcuda_dll_utf8(lpLibFileName as *const _) {
         ZLUDA_PATH_UTF8.as_ptr() as *const _
+    } else if is_nvml_dll_utf8(lpLibFileName as *const _) {
+        ZLUDA_ML_PATH_UTF8.as_ptr() as *const _
     } else {
         lpLibFileName
     };
@@ -168,6 +174,8 @@ unsafe extern "system" fn ZludaLoadLibraryA(lpLibFileName: LPCSTR) -> HMODULE {
 unsafe extern "system" fn ZludaLoadLibraryW(lpLibFileName: LPCWSTR) -> HMODULE {
     let nvcuda_file_name = if is_nvcuda_dll_utf16(lpLibFileName) {
         ZLUDA_PATH_UTF16.unwrap().as_ptr()
+    } else if is_nvml_dll_utf16(lpLibFileName as *const _) {
+        ZLUDA_ML_PATH_UTF16.unwrap().as_ptr()
     } else {
         lpLibFileName
     };
@@ -182,6 +190,8 @@ unsafe extern "system" fn ZludaLoadLibraryExA(
 ) -> HMODULE {
     let nvcuda_file_name = if is_nvcuda_dll_utf8(lpLibFileName as *const _) {
         ZLUDA_PATH_UTF8.as_ptr() as *const _
+    } else if is_nvml_dll_utf8(lpLibFileName as *const _) {
+        ZLUDA_ML_PATH_UTF8.as_ptr() as *const _
     } else {
         lpLibFileName
     };
@@ -196,6 +206,8 @@ unsafe extern "system" fn ZludaLoadLibraryExW(
 ) -> HMODULE {
     let nvcuda_file_name = if is_nvcuda_dll_utf16(lpLibFileName) {
         ZLUDA_PATH_UTF16.unwrap().as_ptr()
+    } else if is_nvml_dll_utf16(lpLibFileName as *const _) {
+        ZLUDA_ML_PATH_UTF16.unwrap().as_ptr()
     } else {
         lpLibFileName
     };
@@ -363,7 +375,7 @@ unsafe fn continue_create_process_hook(
     }
     if detours_sys::DetourCopyPayloadToProcess(
         (*process_information).hProcess,
-        &PAYLOAD_GUID,
+        &PAYLOAD_NVCUDA_GUID,
         ZLUDA_PATH_UTF16.unwrap().as_ptr() as *mut _,
         (ZLUDA_PATH_UTF16.unwrap().len() * mem::size_of::<u16>()) as u32,
     ) == FALSE
@@ -372,6 +384,16 @@ unsafe fn continue_create_process_hook(
         return 0;
     }
 
+    if detours_sys::DetourCopyPayloadToProcess(
+        (*process_information).hProcess,
+        &PAYLOAD_NVML_GUID,
+        ZLUDA_ML_PATH_UTF16.unwrap().as_ptr() as *mut _,
+        (ZLUDA_ML_PATH_UTF16.unwrap().len() * mem::size_of::<u16>()) as u32,
+    ) == FALSE
+    {
+        TerminateProcess((*process_information).hProcess, 1);
+        return 0;
+    }
     if creation_flags & CREATE_SUSPENDED == 0 {
         if ResumeThread((*process_information).hThread) == -1i32 as u32 {
             TerminateProcess((*process_information).hProcess, 1);
@@ -490,7 +512,23 @@ unsafe extern "C" fn unsupported_cuda_fn() -> c_uint {
 }
 
 fn is_nvcuda_dll_utf8(lib: *const u8) -> bool {
-    is_nvcuda_dll(lib, 0, NVCUDA_UTF8.as_bytes(), |c| {
+    is_dll_utf8(lib, NVCUDA_UTF8.as_bytes())
+}
+
+fn is_nvcuda_dll_utf16(lib: *const u16) -> bool {
+    is_dll_utf16(lib, NVCUDA_UTF16)
+}
+
+fn is_nvml_dll_utf8(lib: *const u8) -> bool {
+    is_dll_utf8(lib, NVML_UTF8.as_bytes())
+}
+
+fn is_nvml_dll_utf16(lib: *const u16) -> bool {
+    is_dll_utf16(lib, NVML_UTF16)
+}
+
+fn is_dll_utf8(lib: *const u8, name: &[u8]) -> bool {
+    is_dll_impl(lib, 0, name, |c| {
         if c >= 'a' as u8 && c <= 'z' as u8 {
             c - 32
         } else {
@@ -498,8 +536,9 @@ fn is_nvcuda_dll_utf8(lib: *const u8) -> bool {
         }
     })
 }
-fn is_nvcuda_dll_utf16(lib: *const u16) -> bool {
-    is_nvcuda_dll(lib, 0u16, NVCUDA_UTF16, |c| {
+
+fn is_dll_utf16(lib: *const u16, name: &[u16]) -> bool {
+    is_dll_impl(lib, 0u16, name, |c| {
         if c >= 'a' as u16 && c <= 'z' as u16 {
             c - 32
         } else {
@@ -508,7 +547,7 @@ fn is_nvcuda_dll_utf16(lib: *const u16) -> bool {
     })
 }
 
-fn is_nvcuda_dll<T: Copy + PartialEq>(
+fn is_dll_impl<T: Copy + PartialEq>(
     lib: *const T,
     zero: T,
     dll_name: &[T],
@@ -544,11 +583,13 @@ unsafe extern "system" fn DllMain(instDLL: HINSTANCE, dwReason: u32, _: *const u
         if !initialize_current_module_name(instDLL) {
             return FALSE;
         }
-        match get_zluda_dll_path() {
-            Some(path) => {
-                ZLUDA_PATH_UTF16 = Some(path);
+        match get_zluda_dlls_paths() {
+            Some((nvcuda_path, nvml_path)) => {
+                ZLUDA_PATH_UTF16 = Some(nvcuda_path);
+                ZLUDA_ML_PATH_UTF16 = Some(nvml_path);
                 // from_utf16_lossy(...) handles terminating NULL correctly
-                ZLUDA_PATH_UTF8 = String::from_utf16_lossy(path).into_bytes();
+                ZLUDA_PATH_UTF8 = String::from_utf16_lossy(nvcuda_path).into_bytes();
+                ZLUDA_ML_PATH_UTF8 = String::from_utf16_lossy(nvml_path).into_bytes();
             }
             None => return FALSE,
         }
@@ -740,25 +781,34 @@ unsafe fn detach_load_library() -> i32 {
     TRUE
 }
 
-fn get_zluda_dll_path() -> Option<&'static [u16]> {
+fn get_zluda_dlls_paths() -> Option<(&'static [u16], &'static [u16])> {
+    match get_payload(&PAYLOAD_NVCUDA_GUID) {
+        None => None,
+        Some(nvcuda_payload) => match get_payload(&PAYLOAD_NVML_GUID) {
+            None => return None,
+            Some(nvml_payload) => return Some((nvcuda_payload, nvml_payload)),
+        },
+    }
+}
+
+fn get_payload(guid: &detours_sys::GUID) -> Option<&'static [u16]> {
     let mut module = ptr::null_mut();
     loop {
         module = unsafe { detours_sys::DetourEnumerateModules(module) };
         if module == ptr::null_mut() {
-            break;
+            return None;
         }
         let mut size = 0;
-        let payload = unsafe { detours_sys::DetourFindPayload(module, &PAYLOAD_GUID, &mut size) };
-        if payload != ptr::null_mut() {
-            return unsafe {
-                Some(slice::from_raw_parts(
-                    payload as *const _,
+        let payload_ptr = unsafe { detours_sys::DetourFindPayload(module, guid, &mut size) };
+        if payload_ptr != ptr::null_mut() {
+            return Some(unsafe {
+                slice::from_raw_parts(
+                    payload_ptr as *const _,
                     (size as usize) / mem::size_of::<u16>(),
-                ))
-            };
+                )
+            });
         }
     }
-    None
 }
 
 #[must_use]
diff --git a/zluda_redirect/src/payload_guid.rs b/zluda_redirect/src/payload_guid.rs
index eaf021d..2d7ee6c 100644
--- a/zluda_redirect/src/payload_guid.rs
+++ b/zluda_redirect/src/payload_guid.rs
@@ -1,6 +1,14 @@
-const PAYLOAD_GUID: detours_sys::GUID = detours_sys::GUID {

+const PAYLOAD_NVCUDA_GUID: detours_sys::GUID = detours_sys::GUID {

     Data1: 0xC225FC0C,

     Data2: 0x00D7,

     Data3: 0x40B8,

     Data4: [0x93, 0x5A, 0x7E, 0x34, 0x2A, 0x93, 0x44, 0xC1],

+};

+

+#[allow(dead_code)]

+const PAYLOAD_NVML_GUID: detours_sys::GUID = detours_sys::GUID {

+    Data1: 0x75B54759,

+    Data2: 0xB6F1,

+    Data3: 0x49C2,

+    Data4: [0xA2, 0x09, 0x68, 0x54, 0x96, 0xBD, 0x70, 0xC0],

 };
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