1 files changed, 59 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/setsid.c b/sysdeps/mach/hurd/setsid.c
new file mode 100644
index 0000000000..22dc965344
--- /dev/null
+++ b/sysdeps/mach/hurd/setsid.c
@@ -0,0 +1,59 @@
+/* Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <unistd.h>
+#include <hurd.h>
+#include <hurd/port.h>
+
+
+/* Create a new session with the calling process as its leader.
+   The process group IDs of the session and the calling process
+   are set to the process ID of the calling process, which is returned.  */
+int
+DEFUN_VOID(__setsid)
+{
+  error_t err;
+  unsigned int stamp;
+
+  stamp = _hurd_pids_changed_stamp; /* Atomic fetch.  */
+
+  /* Tell the proc server we want to start a new session.  */
+  if (err = __USEPORT (PROC, __proc_setsid (port)))
+    return __hurd_fail (err);
+
+  /* Punt our current ctty.  */
+  _hurd_setcttyid (MACH_PORT_NULL);
+
+  /* Synchronize with the signal thread to make sure we have
+     received and processed proc_newids before returning to the user.  */
+  while (_hurd_pids_changed_stamp == stamp)
+    {
+#ifdef noteven
+      /* XXX we have no need for a mutex, but cthreads demands one.  */
+      __condition_wait (&_hurd_pids_changed_sync, NULL);
+#else
+      __swtch_pri(0);
+#endif
+    }
+
+  return 0;
+}
+
+weak_alias (__setsid, setsid)