util-vserver-0.30.208

[util-vserver.git] / lib_internal / command-wait.c

diff --git a/lib_internal/command-wait.c b/lib_internal/command-wait.c
new file mode 100644 (file)
index 0000000..44cf611
--- /dev/null
+++ b/lib_internal/command-wait.c
@@ -0,0 +1,40 @@
+// $Id: command-wait.c,v 1.2 2004/07/02 23:44:33 ensc Exp $    --*- c -*--
+
+// Copyright (C) 2004 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
+//  
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; version 2 of the License.
+//  
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//  
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include "command.h"
+#include <errno.h>
+
+bool
+Command_wait(struct Command *cmd, bool do_block)
+{
+  int          rc;
+  
+  if (cmd->rc!=-1) return true;
+
+  switch (wait4(cmd->pid, &rc, (!do_block ? WNOHANG : 0), &cmd->rusage)) {
+    case  0    :  break;
+    case -1    :  cmd->err = errno; break;
+    default    :  cmd->rc  = rc;    return true;
+  }
+
+  return false;
+}