* exceptions.cc (set_signal_mask): Report on input argument rather than

getsigmask.
* fhandler.h (fhandler_base): Make friends with close_all_files.
* pinfo.cc (_pinfo::set_ctty): Add more debugging.
* sigproc.cc (proc_can_be_signalled): Detect state when signal handler thread
is gone in target process as an EPERM situation.  Set errno to ESRCH if process
doesn't exist.
(sigproc_terminate): Set sendsig to illegal value when closed.
(sig_send): Rely on proc_can_be_signalled setting the proper errno.
* syscalls.cc (close_all_files): Detect when all ttys are closed prior to
calling close_all_files.  The ctty needs to be closed explicitly in this case.

winsup/cygwin/ChangeLog

@@ -1,3 +1,19 @@
+2003-12-16  Christopher Faylor  <cgf@redhat.com>
+
+	* exceptions.cc (set_signal_mask): Report on input argument rather than
+	getsigmask.
+
+	* fhandler.h (fhandler_base): Make friends with close_all_files.
+	* pinfo.cc (_pinfo::set_ctty): Add more debugging.
+	* sigproc.cc (proc_can_be_signalled): Detect state when signal handler
+	thread is gone in target process as an EPERM situation.  Set errno to
+	ESRCH if process doesn't exist.
+	(sigproc_terminate): Set sendsig to illegal value when closed.
+	(sig_send): Rely on proc_can_be_signalled setting the proper errno.
+	* syscalls.cc (close_all_files): Detect when all ttys are closed prior
+	to calling close_all_files.  The ctty needs to be closed explicitly in
+	this case.
+
 2003-12-16  Corinna Vinschen  <corinna@vinschen.de>
 
 	* include/cygwin/ipc.h: Include sys/types.h.

winsup/cygwin/exceptions.cc

@@ -978,7 +978,7 @@ set_signal_mask (sigset_t newmask, sigset_t& oldmask)
 {
   mask_sync->acquire (INFINITE);
   newmask &= ~SIG_NONMASKABLE;
-  sigproc_printf ("old mask = %x, new mask = %x", myself->getsigmask (), newmask);
+  sigproc_printf ("old mask %p, new mask %p", oldmask, newmask);
   myself->setsigmask (newmask);	// Set a new mask
   mask_sync->release ();
   if (oldmask & ~newmask)

winsup/cygwin/fhandler.h

@@ -98,6 +98,7 @@ enum bg_check_types
 class fhandler_base
 {
   friend class dtable;
+  friend void close_all_files ();
  protected:
   DWORD status;
  private:

winsup/cygwin/pinfo.cc

@@ -278,6 +278,7 @@ _pinfo::set_ctty (tty_min *tc, int flags, fhandler_tty_slave *arch)
 	tc->setpgid (pgid);
       if (cygheap->ctty != arch)
 	{
+	  debug_printf ("cygheap->ctty %p, arch %p", cygheap->ctty, arch);
 	  if (!cygheap->ctty)
 	    syscall_printf ("ctty NULL");
 	  else
@@ -289,7 +290,10 @@ _pinfo::set_ctty (tty_min *tc, int flags, fhandler_tty_slave *arch)
 	    }
 	  cygheap->ctty = arch;
 	  if (arch)
-	    arch->usecount++;
+	    {
+	      arch->usecount++;
+	      debug_printf ("arch usecount for tty%d is %d", tc->ntty, arch->usecount);
+	    }
 	}
     }
 }

winsup/cygwin/sigproc.cc

@@ -248,9 +248,19 @@ proc_can_be_signalled (_pinfo *p)
       return true;
     }
 
-  return ISSTATE (p, PID_INITIALIZING) ||
-	 (((p)->process_state & (PID_ACTIVE | PID_IN_USE)) ==
-	  (PID_ACTIVE | PID_IN_USE));
+  if (p->sendsig == INVALID_HANDLE_VALUE)
+    {
+      set_errno (EPERM);
+      return false;
+    }
+
+  if (ISSTATE (p, PID_INITIALIZING) ||
+      (((p)->process_state & (PID_ACTIVE | PID_IN_USE)) ==
+       (PID_ACTIVE | PID_IN_USE)))
+    return true;
+
+  set_errno (ESRCH);
+  return false;
 }
 
 bool __stdcall
@@ -638,7 +648,9 @@ sigproc_terminate (void)
       sig_loop_wait = 0;	// Tell wait_sig to exit when it is
 				//  finished with anything it is doing
       ForceCloseHandle (sigcomplete_main);
-      CloseHandle (myself->sendsig);
+      HANDLE sendsig = myself->sendsig;
+      myself->sendsig = INVALID_HANDLE_VALUE;
+      CloseHandle (sendsig);
     }
   proc_terminate ();		// Terminate process handling thread
 
@@ -679,7 +691,6 @@ sig_send (_pinfo *p, int sig, void *tls)
     {
       sigproc_printf ("invalid pid %d(%x), signal %d",
 		  p->pid, p->process_state, sig);
-      set_errno (ESRCH);
       goto out;
     }
 

winsup/cygwin/syscalls.cc

@@ -91,14 +91,20 @@ close_all_files (void)
 
   if (cygheap->ctty)
     {
-      debug_printf ("decrementing ctty usecount");
-      cygheap->ctty->usecount--;
+      if (cygheap->ctty->usecount == 1)
+	cygheap->ctty->close ();
+      else
+	cygheap->ctty->usecount--;
+      debug_printf ("ctty usecount %d", cygheap->ctty->archetype->usecount);
     }
 
   fhandler_base *fh;
   for (int i = 0; i < (int) cygheap->fdtab.size; i++)
     if ((fh = cygheap->fdtab[i]) != NULL)
       {
+#ifdef DEBUGGING
+	debug_printf ("closing fd %d", i);
+#endif
 	fh->close ();
 	cygheap->fdtab.release (i);
       }