* fhandler.cc (fhandler_base::open): Accomodate query_write_control

	query_state.
	(fhandler_base::fchown): New method.
	* fhandler.h: Declare fchown method in fhandler_base,
	fhandler_disk_file and fhandler_virtual.
	(enum query_state): Add query_write_control.
	* fhandler_disk_file.cc (fhandler_disk_file::fchmod): Set query_state
	to query_write_control.  Only remove FILE_ATTRIBUTE_READONLY if not
	setting security descriptor.
	(fhandler_disk_file::fchown): New method.
	* fhandler_virtual.cc (fhandler_virtual::fchown): New method.
	* sec_acl.cc (setacl): Call write_sd with additional handle attribute.
	* security.cc (write_sd): Take handle argument.  Only request owner
	if getting SE_RESTORE_NAME privilege failed.  Only open file if
	NtSetSecurityObject failed or handle is NULL.
	(set_nt_attribute): Call write_sd with additional handle attribute.
	* security.h (write_sd): Declare with additional handle argument.

1 files changed, 8 insertions, 0 deletions

diff --git a/winsup/cygwin/fhandler_virtual.cc b/winsup/cygwin/fhandler_virtual.cc
index 65be71b23..16b83923e 100644
--- a/winsup/cygwin/fhandler_virtual.cc
+++ b/winsup/cygwin/fhandler_virtual.cc
@@ -234,3 +234,11 @@ fhandler_virtual::fchmod (mode_t mode)
   set_errno (EPERM);
   return -1;
 }
+
+int
+fhandler_virtual::fchown (__uid32_t uid, __gid32_t gid)
+{
+  /* Same as on Linux. */
+  set_errno (EPERM);
+  return -1;
+}