* fhandler.cc (fhandler_base::open): When creating a file on a

[pf3gnuchains/sourceware.git] / winsup / cygwin / fhandler_socket.cc

diff --git a/winsup/cygwin/fhandler_socket.cc b/winsup/cygwin/fhandler_socket.cc
index 1b4bf29..22ae05f 100644 (file)
--- a/winsup/cygwin/fhandler_socket.cc
+++ b/winsup/cygwin/fhandler_socket.cc
@@ -996,10 +996,17 @@ fhandler_socket::bind (const struct sockaddr *name, int namelen)
       HANDLE fh;
       OBJECT_ATTRIBUTES attr;
       IO_STATUS_BLOCK io;
+      ULONG access = DELETE | FILE_GENERIC_WRITE;
 
-      status = NtCreateFile (&fh, DELETE | FILE_GENERIC_WRITE,
-                            pc.get_object_attr (attr, sa), &io, NULL, fattr,
-                            0, FILE_CREATE,
+      /* If the filesystem supports ACLs, we will overwrite the DACL after the
+        call to NtCreateFile.  This requires a handle with READ_CONTROL and
+        WRITE_DAC access, otherwise get_file_sd and set_file_sd both have to
+        open the file again. */
+      if (pc.has_acls ())
+       access |= READ_CONTROL | WRITE_DAC;
+
+      status = NtCreateFile (&fh, access, pc.get_object_attr (attr, sa), &io,
+                            NULL, fattr, 0, FILE_CREATE,
                             FILE_NON_DIRECTORY_FILE
                             | FILE_SYNCHRONOUS_IO_NONALERT
                             | FILE_OPEN_FOR_BACKUP_INTENT,