1 files changed, 30 insertions, 10 deletions
diff --git a/library/std/src/sys/windows/c.rs b/library/std/src/sys/windows/c.rs
index f58dcf128..5d150eca0 100644
--- a/library/std/src/sys/windows/c.rs
+++ b/library/std/src/sys/windows/c.rs
@@ -6,13 +6,15 @@
 
 use crate::ffi::CStr;
 use crate::mem;
-use crate::os::raw::{c_char, c_int, c_long, c_longlong, c_uint, c_ulong, c_ushort};
+use crate::os::raw::{c_char, c_long, c_longlong, c_uint, c_ulong, c_ushort};
 use crate::os::windows::io::{BorrowedHandle, HandleOrInvalid, HandleOrNull};
 use crate::ptr;
 use core::ffi::NonZero_c_ulong;
 
 use libc::{c_void, size_t, wchar_t};
 
+pub use crate::os::raw::c_int;
+
 #[path = "c/errors.rs"] // c.rs is included from two places so we need to specify this
 mod errors;
 pub use errors::*;
@@ -47,16 +49,19 @@ pub type ACCESS_MASK = DWORD;
 
 pub type LPBOOL = *mut BOOL;
 pub type LPBYTE = *mut BYTE;
+pub type LPCCH = *const CHAR;
 pub type LPCSTR = *const CHAR;
+pub type LPCWCH = *const WCHAR;
 pub type LPCWSTR = *const WCHAR;
+pub type LPCVOID = *const c_void;
 pub type LPDWORD = *mut DWORD;
 pub type LPHANDLE = *mut HANDLE;
 pub type LPOVERLAPPED = *mut OVERLAPPED;
 pub type LPPROCESS_INFORMATION = *mut PROCESS_INFORMATION;
 pub type LPSECURITY_ATTRIBUTES = *mut SECURITY_ATTRIBUTES;
 pub type LPSTARTUPINFO = *mut STARTUPINFO;
+pub type LPSTR = *mut CHAR;
 pub type LPVOID = *mut c_void;
-pub type LPCVOID = *const c_void;
 pub type LPWCH = *mut WCHAR;
 pub type LPWIN32_FIND_DATAW = *mut WIN32_FIND_DATAW;
 pub type LPWSADATA = *mut WSADATA;
@@ -132,6 +137,10 @@ pub const MAX_PATH: usize = 260;
 
 pub const FILE_TYPE_PIPE: u32 = 3;
 
+pub const CP_UTF8: DWORD = 65001;
+pub const MB_ERR_INVALID_CHARS: DWORD = 0x08;
+pub const WC_ERR_INVALID_CHARS: DWORD = 0x80;
+
 #[repr(C)]
 #[derive(Copy)]
 pub struct WIN32_FIND_DATAW {
@@ -539,14 +548,6 @@ pub struct SYMBOLIC_LINK_REPARSE_BUFFER {
     pub PathBuffer: WCHAR,
 }
 
-/// NB: Use carefully! In general using this as a reference is likely to get the
-/// provenance wrong for the `PathBuffer` field!
-#[repr(C)]
-pub struct FILE_NAME_INFO {
-    pub FileNameLength: DWORD,
-    pub FileName: [WCHAR; 1],
-}
-
 #[repr(C)]
 pub struct MOUNT_POINT_REPARSE_BUFFER {
     pub SubstituteNameOffset: c_ushort,
@@ -1155,6 +1156,25 @@ extern "system" {
         lpFilePart: *mut LPWSTR,
     ) -> DWORD;
     pub fn GetFileAttributesW(lpFileName: LPCWSTR) -> DWORD;
+
+    pub fn MultiByteToWideChar(
+        CodePage: UINT,
+        dwFlags: DWORD,
+        lpMultiByteStr: LPCCH,
+        cbMultiByte: c_int,
+        lpWideCharStr: LPWSTR,
+        cchWideChar: c_int,
+    ) -> c_int;
+    pub fn WideCharToMultiByte(
+        CodePage: UINT,
+        dwFlags: DWORD,
+        lpWideCharStr: LPCWCH,
+        cchWideChar: c_int,
+        lpMultiByteStr: LPSTR,
+        cbMultiByte: c_int,
+        lpDefaultChar: LPCCH,
+        lpUsedDefaultChar: LPBOOL,
+    ) -> c_int;
 }
 
 #[link(name = "ws2_32")]