diff options
Diffstat (limited to 'winsup/cygwin/dcrt0.cc')
| -rw-r--r-- | winsup/cygwin/dcrt0.cc | 30 |
1 files changed, 23 insertions, 7 deletions
diff --git a/winsup/cygwin/dcrt0.cc b/winsup/cygwin/dcrt0.cc index 6b564dced..463df3128 100644 --- a/winsup/cygwin/dcrt0.cc +++ b/winsup/cygwin/dcrt0.cc @@ -685,14 +685,30 @@ child_info_spawn::handle_spawn () ready (true); - /* Keep pointer to parent open if we've execed so that pid will not be reused. - Otherwise, we no longer need this handle so close it. - Need to do this after debug_fixup_after_fork_exec or DEBUGGING handling of - handles might get confused. */ - if (type != _CH_EXEC && child_proc_info->parent) + if (child_proc_info->parent) { - CloseHandle (child_proc_info->parent); - child_proc_info->parent = NULL; + if (type == _CH_EXEC) + { + /* Keep pointer to parent open if we've execed so that pid will not be + reused. Try to Urther reduce permissions. */ + HANDLE new_parent; + + if (DuplicateHandle (GetCurrentProcess (), child_proc_info->parent, + GetCurrentProcess (), &new_parent, + SYNCHRONIZE, FALSE, 0)) + { + CloseHandle (child_proc_info->parent); + child_proc_info->parent = new_parent; + } + } + else + { + /* Otherwise, we no longer need this handle so close it. Need to do + this after debug_fixup_after_fork_exec or DEBUGGING handling of + handles might get confused. */ + CloseHandle (child_proc_info->parent); + child_proc_info->parent = NULL; + } } signal_fixup_after_exec (); |