* syscalls.cc (setsid): Detach process from its console if the current

controlling tty is the console and already closed.
* dtable.h (class dtable): Add members to count descriptors referring to the
console.
* dtable.cc (dtable::dec_console_fds): New function to detach process from its
console.
(dtable::release): Decrement the counter of console descriptors.
(dtable::build_fhandler): Increment it.
* exception.cc (ctrl_c_handler): Send SIGTERM to myself when catch
CTRL_SHUTDOWN_EVENT.

1 files changed, 10 insertions, 3 deletions

diff --git a/winsup/cygwin/dtable.h b/winsup/cygwin/dtable.h
index f81d916b7..bfeffa36b 100644
--- a/winsup/cygwin/dtable.h
+++ b/winsup/cygwin/dtable.h
@@ -1,6 +1,6 @@
 /* dtable.h: fd table definition.
 
-   Copyright 2000 Red Hat, Inc.
+   Copyright 2000, 2001 Red Hat, Inc.
 
 This file is part of Cygwin.
 
@@ -19,19 +19,26 @@ class dtable
   fhandler_base **fds_on_hold;
   int first_fd_for_open;
   int cnt_need_fixup_before;
+  int console_fds;
 public:
   size_t size;
 
-  dtable () : first_fd_for_open(3), cnt_need_fixup_before(0) {}
+  dtable () : first_fd_for_open(3), cnt_need_fixup_before(0), console_fds(0) {}
   void init () {first_fd_for_open = 3;}
 
   void dec_need_fixup_before ()
     { if (cnt_need_fixup_before > 0) --cnt_need_fixup_before; }
   void inc_need_fixup_before ()
-    { ++cnt_need_fixup_before; }
+    { cnt_need_fixup_before++; }
   BOOL need_fixup_before ()
     { return cnt_need_fixup_before > 0; }
 
+  void dec_console_fds ();
+  void inc_console_fds ()
+    { console_fds++; }
+  BOOL has_console_fds ()
+    { return console_fds > 0; }
+
   int vfork_child_dup ();
   void vfork_parent_restore ();
   void vfork_child_fixup ();