[reactos] 01/02: [KERNEL32] Fix buffer size for allocation in GetVolumeInformationW(). This fixes function failing with big enough buffer.

[Pierre Schweitzer]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=5bfc68cc14a4fd157f5f6d...

commit 5bfc68cc14a4fd157f5f6df716648ac67542e528
Author: Pierre Schweitzer [e-mail]
AuthorDate: Sun Oct 15 10:43:49 2017 +0200

[KERNEL32] Fix buffer size for allocation in GetVolumeInformationW(). This fixes function failing with big enough buffer.
---
 dll/win32/kernel32/client/file/volume.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/dll/win32/kernel32/client/file/volume.c b/dll/win32/kernel32/client/file/volume.c
index 90016b8e08..ba0ef82f5d 100644
--- a/dll/win32/kernel32/client/file/volume.c
+++ b/dll/win32/kernel32/client/file/volume.c
@@ -253,6 +253,10 @@ GetVolumeInformationW(IN LPCWSTR lpRootPathName,
         RootPathName = lpRootPathName;
     }

+    /* Convert length to bytes */
+    nVolumeNameSize *= sizeof(WCHAR);
+    nFileSystemNameSize *= sizeof(WCHAR);
+
     /* Convert to NT name */
     if (!RtlDosPathNameToNtPathName_U(RootPathName, &NtPathName, NULL, NULL))
     {