[PATCH 4/5] kernelbase: Implement GetDiskSpaceInformationW().

[Conor McCarthy]

From: Conor McCarthy

---
 dlls/kernel32/kernel32.spec     |  1 +
 dlls/kernelbase/kernelbase.spec |  1 +
 dlls/kernelbase/volume.c        | 25 +++++++++++++++++++++++++
 include/winbase.h               |  1 +
 4 files changed, 28 insertions(+)

diff --git a/dlls/kernel32/kernel32.spec b/dlls/kernel32/kernel32.spec
index 3b6ef866705..70b23720095 100644
--- a/dlls/kernel32/kernel32.spec
+++ b/dlls/kernel32/kernel32.spec
@@ -659,6 +659,7 @@
 @ stdcall -import GetDiskFreeSpaceExA (str ptr ptr ptr)
 @ stdcall -import GetDiskFreeSpaceExW (wstr ptr ptr ptr)
 @ stdcall -import GetDiskFreeSpaceW(wstr ptr ptr ptr ptr)
+@ stdcall -import GetDiskSpaceInformationW(wstr ptr)
 @ stdcall GetDllDirectoryA(long ptr)
 @ stdcall GetDllDirectoryW(long ptr)
 @ stdcall -import GetDriveTypeA(str)
diff --git a/dlls/kernelbase/kernelbase.spec b/dlls/kernelbase/kernelbase.spec
index 50c765c792a..3e9982762a4 100644
--- a/dlls/kernelbase/kernelbase.spec
+++ b/dlls/kernelbase/kernelbase.spec
@@ -514,6 +514,7 @@
 @ stdcall GetDiskFreeSpaceExA(str ptr ptr ptr)
 @ stdcall GetDiskFreeSpaceExW(wstr ptr ptr ptr)
 @ stdcall GetDiskFreeSpaceW(wstr ptr ptr ptr ptr)
+@ stdcall GetDiskSpaceInformationW(wstr ptr)
 @ stdcall GetDriveTypeA(str)
 @ stdcall GetDriveTypeW(wstr)
 # @ stub GetDurationFormatEx
diff --git a/dlls/kernelbase/volume.c b/dlls/kernelbase/volume.c
index d4895228525..38205fa57cf 100644
--- a/dlls/kernelbase/volume.c
+++ b/dlls/kernelbase/volume.c
@@ -736,6 +736,31 @@ BOOL WINAPI DECLSPEC_HOTPATCH GetDiskFreeSpaceA( LPCSTR root, LPDWORD cluster_se
 }

+/***********************************************************************
+ *           GetDiskSpaceInformationW   (kernelbase.@)
+ */
+HRESULT WINAPI DECLSPEC_HOTPATCH GetDiskSpaceInformationW( LPCWSTR root, DISK_SPACE_INFORMATION *info )
+{
+    IO_STATUS_BLOCK io;
+    NTSTATUS status;
+    HANDLE handle;
+
+    TRACE( "%s,%p\n", debugstr_w(root), info );
+
+    if (!info)
+        return HRESULT_FROM_NT( ERROR_INVALID_DATA | ERROR_SEVERITY_WARNING | ERROR_SEVERITY_INFORMATIONAL );
+
+    if (!open_device_root( root, &handle )) return HRESULT_FROM_WIN32( ERROR_PATH_NOT_FOUND );
+
+    status = NtQueryVolumeInformationFile( handle, &io, (FILE_FS_FULL_SIZE_INFORMATION_EX *)info, sizeof(*info),
+                                           FileFsFullSizeInformationEx );
+    NtClose( handle );
+    if (!set_ntstatus( status )) return status;
+
+    return S_OK;
+}
+
+
 static BOOL is_dos_path( const UNICODE_STRING *path )
 {
     static const WCHAR global_prefix[4] = {'\','?','?','\'};
diff --git a/include/winbase.h b/include/winbase.h
index 03c610d5079..7361e6dc697 100644
--- a/include/winbase.h
+++ b/include/winbase.h
@@ -2201,6 +2201,7 @@ WINBASEAPI BOOL        WINAPI GetDiskFreeSpaceW(LPCWSTR,LPDWORD,LPDWORD,LPDWORD,
 WINBASEAPI BOOL        WINAPI GetDiskFreeSpaceExA(LPCSTR,PULARGE_INTEGER,PULARGE_INTEGER,PULARGE_INTEGER);
 WINBASEAPI BOOL        WINAPI GetDiskFreeSpaceExW(LPCWSTR,PULARGE_INTEGER,PULARGE_INTEGER,PULARGE_INTEGER);
 #define                       GetDiskFreeSpaceEx WINELIB_NAME_AW(GetDiskFreeSpaceEx)
+WINBASEAPI HRESULT     WINAPI GetDiskSpaceInformationW(LPCWSTR,DISK_SPACE_INFORMATION*);
 WINBASEAPI DWORD       WINAPI GetDllDirectoryA(DWORD,LPSTR);
 WINBASEAPI DWORD       WINAPI GetDllDirectoryW(DWORD,LPWSTR);
 #define                       GetDllDirectory WINELIB_NAME_AW(GetDllDirectory)