util-vserver-0.30.208

[util-vserver.git] / lib / syscall_gettaskxid-oldproc.hc

diff --git a/lib/syscall_gettaskxid-oldproc.hc b/lib/syscall_gettaskxid-oldproc.hc
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+++ b/lib/syscall_gettaskxid-oldproc.hc
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+// $Id: syscall_gettaskxid-oldproc.hc,v 1.2 2004/02/02 18:58:00 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 "utils-legacy.h"
+
+static xid_t
+getctx_legacy_internal(pid_t pid)
+{
+  size_t                       bufsize = utilvserver_getProcEntryBufsize();
+  char                         buf[bufsize];
+  char                         *pos = 0;
+
+  pos = utilvserver_getProcEntry(pid, "\ns_context: ", buf, bufsize);
+
+  if (pos!=0) return atoi(pos);
+  else        return VC_NOCTX;
+}
+
+static inline ALWAYSINLINE xid_t
+vc_get_task_xid_oldproc(pid_t pid)
+{
+  xid_t                res;
+  do {
+    res = getctx_legacy_internal(pid);
+  } while (res==VC_NOCTX && errno==EAGAIN);
+
+  return res;
+}