[PATCH 3/4] server: Don't allow read-only files to be replaced by File{Rename,Link}Information{,Ex}.

[Joel Holdsworth]

From: Joel Holdsworth

Signed-off-by: Joel Holdsworth 
---
 dlls/ntdll/tests/file.c | 16 ++++++++--------
 server/fd.c             |  7 +++++++
 2 files changed, 15 insertions(+), 8 deletions(-)

diff --git a/dlls/ntdll/tests/file.c b/dlls/ntdll/tests/file.c
index ae8956dedf4..a00a425582c 100644
--- a/dlls/ntdll/tests/file.c
+++ b/dlls/ntdll/tests/file.c
@@ -2226,9 +2226,9 @@ static void test_file_rename_information_ex(void)
     }

todo_wine ok( io.Status == 0xdeadbeef, "io.Status expected 0xdeadbeef, got %lx\n", io.Status );
-    todo_wine ok( res == STATUS_ACCESS_DENIED, "res expected STATUS_ACCESS_DENIED, got %lx\n", res );
+    ok( res == STATUS_ACCESS_DENIED, "res expected STATUS_ACCESS_DENIED, got %lx\n", res );
     fileDeleted = GetFileAttributesW( oldpath ) == INVALID_FILE_ATTRIBUTES && GetLastError() == ERROR_FILE_NOT_FOUND;
-    todo_wine ok( !fileDeleted, "file should exist\n" );
+    ok( !fileDeleted, "file should exist\n" );
     fileDeleted = GetFileAttributesW( newpath ) == INVALID_FILE_ATTRIBUTES && GetLastError() == ERROR_FILE_NOT_FOUND;
     ok( !fileDeleted, "file should exist\n" );

@@ -2259,10 +2259,10 @@ static void test_file_rename_information_ex(void)

io.Status = 0xdeadbeef;
     res = pNtSetInformationFile( handle, &io, fri, sizeof(FILE_RENAME_INFORMATION) + fri->FileNameLength, FileRenameInformationEx );
-    ok( io.Status == STATUS_SUCCESS, "io.Status expected STATUS_SUCCESS, got %lx\n", io.Status );
-    ok( res == STATUS_SUCCESS, "res expected STATUS_SUCCESS, got %lx\n", res );
+    todo_wine ok( io.Status == STATUS_SUCCESS, "io.Status expected STATUS_SUCCESS, got %lx\n", io.Status );
+    todo_wine ok( res == STATUS_SUCCESS, "res expected STATUS_SUCCESS, got %lx\n", res );
     fileDeleted = GetFileAttributesW( oldpath ) == INVALID_FILE_ATTRIBUTES && GetLastError() == ERROR_FILE_NOT_FOUND;
-    ok( fileDeleted, "file should not exist\n" );
+    todo_wine ok( fileDeleted, "file should not exist\n" );
     fileDeleted = GetFileAttributesW( newpath ) == INVALID_FILE_ATTRIBUTES && GetLastError() == ERROR_FILE_NOT_FOUND;
     ok( !fileDeleted, "file should exist\n" );

@@ -3076,7 +3076,7 @@ static void test_file_link_information_ex(void)
         return;
     }

-    todo_wine ok( io.Status == 0xdeadbeef, "io.Status expected 0xdeadbeef, got %lx\n", io.Status );
+    ok( io.Status == 0xdeadbeef, "io.Status expected 0xdeadbeef, got %lx\n", io.Status );
     todo_wine ok( res == STATUS_ACCESS_DENIED, "res expected STATUS_ACCESS_DENIED, got %lx\n", res );
     fileDeleted = GetFileAttributesW( oldpath ) == INVALID_FILE_ATTRIBUTES && GetLastError() == ERROR_FILE_NOT_FOUND;
     ok( !fileDeleted, "file should exist\n" );
@@ -3110,8 +3110,8 @@ static void test_file_link_information_ex(void)

io.Status = 0xdeadbeef;
     res = pNtSetInformationFile( handle, &io, fli, sizeof(FILE_LINK_INFORMATION) + fli->FileNameLength, FileLinkInformationEx );
-    ok( io.Status == STATUS_SUCCESS, "io.Status expected STATUS_SUCCESS, got %lx\n", io.Status );
-    ok( res == STATUS_SUCCESS, "res expected STATUS_SUCCESS, got %lx\n", res );
+    todo_wine ok( io.Status == STATUS_SUCCESS, "io.Status expected STATUS_SUCCESS, got %lx\n", io.Status );
+    todo_wine ok( res == STATUS_SUCCESS, "res expected STATUS_SUCCESS, got %lx\n", res );
     fileDeleted = GetFileAttributesW( oldpath ) == INVALID_FILE_ATTRIBUTES && GetLastError() == ERROR_FILE_NOT_FOUND;
     ok( !fileDeleted, "file should exist\n" );
     fileDeleted = GetFileAttributesW( newpath ) == INVALID_FILE_ATTRIBUTES && GetLastError() == ERROR_FILE_NOT_FOUND;
diff --git a/server/fd.c b/server/fd.c
index 5947dee3ae1..3426a39682a 100644
--- a/server/fd.c
+++ b/server/fd.c
@@ -2579,6 +2579,13 @@ static void set_fd_name( struct fd *fd, struct fd *root, const char *nameptr, da
             goto failed;
         }

+        /* read-only files cannot be replaced */
+        if (!(st.st_mode & (S_IWUSR | S_IWGRP | S_IWOTH)))
+        {
+            set_error( STATUS_ACCESS_DENIED );
+            goto failed;
+        }
+
         /* can't replace an opened file */
         if ((inode = get_inode( st.st_dev, st.st_ino, -1 )))
         {