[PATCH 4/6] ntdll: Allow renaming a file to the same name.

[Zebediah Figura]

Signed-off-by: Zebediah Figura 
---
 dlls/ntdll/file.c       | 23 ++++++++++++++++++++++-
 dlls/ntdll/tests/file.c |  4 ++--
 2 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/dlls/ntdll/file.c b/dlls/ntdll/file.c
index dc9a67fcffa..7dfb0a4800e 100644
--- a/dlls/ntdll/file.c
+++ b/dlls/ntdll/file.c
@@ -2807,8 +2807,29 @@ NTSTATUS WINAPI NtSetInformationFile(HANDLE handle, PIO_STATUS_BLOCK io,

if (!info->ReplaceIfExists && io->u.Status == STATUS_SUCCESS)
             {
+                struct stat st, st2;
+                int fd;
+
+                if ((io->u.Status = server_get_unix_fd( handle, 0, &fd, &needs_close, NULL, NULL )))
+                {
+                    RtlFreeAnsiString( &unix_name );
+                    break;
+                }
+
+                if (fstat( fd, &st ) < 0 || stat( unix_name.Buffer, &st2 ) < 0)
+                {
+                    RtlFreeAnsiString( &unix_name );
+                    io->u.Status = FILE_GetNtStatus();
+                    break;
+                }
+
+                if (st.st_dev == st2.st_dev && st.st_ino == st2.st_ino)
+                    io->u.Status = STATUS_SUCCESS;
+                else
+                    io->u.Status = STATUS_OBJECT_NAME_COLLISION;
+
                 RtlFreeAnsiString( &unix_name );
-                io->u.Status = STATUS_OBJECT_NAME_COLLISION;
+                if (needs_close) close( fd );
                 break;
             }

diff --git a/dlls/ntdll/tests/file.c b/dlls/ntdll/tests/file.c
index e0d4580ae04..bb4bf9df8ad 100644
--- a/dlls/ntdll/tests/file.c
+++ b/dlls/ntdll/tests/file.c
@@ -2123,8 +2123,8 @@ static void test_file_rename_information(void)

U(io).Status = 0xdeadbeef;
     res = pNtSetInformationFile( handle, &io, fri, sizeof(FILE_RENAME_INFORMATION) + fri->FileNameLength, FileRenameInformation );
-    todo_wine ok( U(io).Status == STATUS_SUCCESS, "got io status %#x\n", U(io).Status );
-    todo_wine ok( res == STATUS_SUCCESS, "got status %x\n", res );
+    ok( U(io).Status == STATUS_SUCCESS, "got io status %#x\n", U(io).Status );
+    ok( res == STATUS_SUCCESS, "got status %x\n", res );
     ok( GetFileAttributesW( oldpath ) != INVALID_FILE_ATTRIBUTES, "file should exist\n" );

CloseHandle( handle );