1
0
mirror of https://github.com/samba-team/samba.git synced 2025-01-28 17:47:29 +03:00
samba-mirror/source4/lib/util/become_daemon.c
Jelmer Vernooij b409d4120f r24667: Finally merge the registry improvements that Wilco Baan Hofman and I have
been working on for at least half a year now. Contains the following
improvements:

 * proper layering (finally!) for the registry library. Distinction is
   now made between 'real' backends (local, remote, wine, etc) and
   the low-level hive backends (regf, creg, ldb, ...) that are only used
   by the local registry backend
 * tests for all important hive and registry operations
 * re-enable RPC-WINREG tests (still needs more work though, as
							   some return values aren't checked yet)
 * write support for REGF files
 * dir backend now supports setting/reading values, creating keys
 * support for storing security descriptors
 * remove CREG backend as it was incomplete, didn't match the data model
   and wasn't used at all anyway
 * support for parsing ADM files as used by the policy editor (see lib/policy)
 * support for parsing PREG files (format used by .POL files)
 * new streaming interface for registry diffs (improves speed and memory usage
	for regdiff/regpatch significantly)

   ... and fixes a large number of bugs in the registry code
(This used to be commit 7a1eec6358bc863dfc671c542b7185d3e39d7b5a)
2007-10-10 15:02:34 -05:00

94 lines
2.3 KiB
C

/*
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@us.ibm.com) 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#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 */
}