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svn commit: samba r22379 - in branches/SAMBA_4_0/source/lib/util: .

Subject: svn commit: samba r22379 - in branches/SAMBA_4_0/source/lib/util: .
From:
Date: Thu, 19 Apr 2007 15:56:44 +0000 GMT
Author: metze
Date: 2007-04-19 15:56:44 +0000 (Thu, 19 Apr 2007)
New Revision: 22379

WebSVN: 
http://websvn.samba.org/cgi-bin/viewcvs.cgi?view=rev&root=samba&rev=22379

Log:
add missing file

metze
Added:
   branches/SAMBA_4_0/source/lib/util/become_daemon.c


Changeset:
Added: branches/SAMBA_4_0/source/lib/util/become_daemon.c
===================================================================
--- branches/SAMBA_4_0/source/lib/util/become_daemon.c  2007-04-19 15:05:59 UTC 
(rev 22378)
+++ branches/SAMBA_4_0/source/lib/util/become_daemon.c  2007-04-19 15:56:44 UTC 
(rev 22379)
@@ -0,0 +1,94 @@
+/* 
+   Unix SMB/CIFS implementation.
+   Samba utility functions
+   Copyright (C) Andrew Tridgell 1992-1998
+   Copyright (C) Jeremy Allison 2001-2002
+   Copyright (C) Simo Sorce 2001
+   Copyright (C) Jim McDonough (jmcd@xxxxxxxxxx)  2003.
+   Copyright (C) James J Myers 2003
+   
+   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; either version 2 of the License, or
+   (at your option) any later version.
+   
+   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., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "system/filesys.h"
+#include "system/locale.h"
+
+/*******************************************************************
+ Close the low 3 fd's and open dev/null in their place.
+********************************************************************/
+static void close_low_fds(BOOL stderr_too)
+{
+#ifndef VALGRIND
+       int fd;
+       int i;
+
+       close(0);
+       close(1); 
+
+       if (stderr_too)
+               close(2);
+
+       /* try and use up these file descriptors, so silly
+               library routines writing to stdout etc won't cause havoc */
+       for (i=0;i<3;i++) {
+               if (i == 2 && !stderr_too)
+                       continue;
+
+               fd = open("/dev/null",O_RDWR,0);
+               if (fd < 0)
+                       fd = open("/dev/null",O_WRONLY,0);
+               if (fd < 0) {
+                       DEBUG(0,("Can't open /dev/null\n"));
+                       return;
+               }
+               if (fd != i) {
+                       DEBUG(0,("Didn't get file descriptor %d\n",i));
+                       return;
+               }
+       }
+#endif
+}
+
+/**
+ Become a daemon, discarding the controlling terminal.
+**/
+
+_PUBLIC_ void become_daemon(BOOL Fork)
+{
+       if (Fork) {
+               if (fork()) {
+                       _exit(0);
+               }
+       }
+
+  /* detach from the terminal */
+#ifdef HAVE_SETSID
+       setsid();
+#elif defined(TIOCNOTTY)
+       {
+               int i = open("/dev/tty", O_RDWR, 0);
+               if (i != -1) {
+                       ioctl(i, (int) TIOCNOTTY, (char *)0);      
+                       close(i);
+               }
+       }
+#endif /* HAVE_SETSID */
+
+       /* Close fd's 0,1,2. Needed if started by rsh */
+       close_low_fds(False);  /* Don't close stderr, let the debug system
+                                 attach it to the logfile */
+}
+

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