[reactos] 04/08: [KERNEL32] GetVolumeNameForRoot: Use towupper for uppercasing the drive letter

[Adam Słaboń]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=56f6734fa5eb03f9355a6…

commit 56f6734fa5eb03f9355a62261240997659bd5c63
Author:     Adam Słaboń <asaillen(a)protonmail.com>
AuthorDate: Sun Mar 3 00:04:43 2024 +0100
Commit:     Hermès BÉLUSCA - MAÏTO <hermes.belusca-maito(a)reactos.org>
CommitDate: Mon Oct 7 11:16:03 2024 +0200

    [KERNEL32] GetVolumeNameForRoot: Use towupper for uppercasing the drive letter
    
    Drive letter is a wide character, using the non-Unicode aware toupper could corrupt
it.
---
 dll/win32/kernel32/client/file/mntpoint.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dll/win32/kernel32/client/file/mntpoint.c
b/dll/win32/kernel32/client/file/mntpoint.c
index 362ed15be82..8fab74c9a8d 100644
--- a/dll/win32/kernel32/client/file/mntpoint.c
+++ b/dll/win32/kernel32/client/file/mntpoint.c
@@ -61,7 +61,7 @@ GetVolumeNameForRoot(IN LPCWSTR lpszRootPath,
     {
         if (NtPathName.Buffer[(NtPathName.Length / sizeof(WCHAR)) - 1] == L':')
         {
-            NtPathName.Buffer[(NtPathName.Length / sizeof(WCHAR)) - 2] =
_toupper(NtPathName.Buffer[(NtPathName.Length / sizeof(WCHAR)) - 2]);
+            NtPathName.Buffer[(NtPathName.Length / sizeof(WCHAR)) - 2] =
towupper(NtPathName.Buffer[(NtPathName.Length / sizeof(WCHAR)) - 2]);
         }
     }