mirror of
https://git.openldap.org/openldap/openldap.git
synced 2024-11-21 01:04:44 +08:00
91 lines
1.7 KiB
C
91 lines
1.7 KiB
C
|
/*
|
||
|
|
* Copyright (c) 1990, 1994 Regents of the University of Michigan.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms are permitted
|
||
|
|
* provided that this notice is preserved and that due credit is given
|
||
|
|
* to the University of Michigan at Ann Arbor. The name of the University
|
||
|
|
* may not be used to endorse or promote products derived from this
|
||
|
|
* software without specific prior written permission. This software
|
||
|
|
* is provided ``as is'' without express or implied warranty.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <sys/types.h>
|
||
|
|
#ifdef SVR4
|
||
|
|
#include <sys/stat.h>
|
||
|
|
#endif /* svr4 */
|
||
|
|
#include <fcntl.h>
|
||
|
|
#include <sys/file.h>
|
||
|
|
#include <sys/ioctl.h>
|
||
|
|
#include <signal.h>
|
||
|
|
#include "portable.h"
|
||
|
|
|
||
|
|
#ifdef USE_SYSCONF
|
||
|
|
#include <unistd.h>
|
||
|
|
#endif /* USE_SYSCONF */
|
||
|
|
|
||
|
|
|
||
|
|
detach()
|
||
|
|
{
|
||
|
|
int i, sd, nbits;
|
||
|
|
#ifdef LDAP_DEBUG
|
||
|
|
extern int ldap_debug;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef USE_SYSCONF
|
||
|
|
nbits = sysconf( _SC_OPEN_MAX );
|
||
|
|
#else /* USE_SYSCONF */
|
||
|
|
nbits = getdtablesize();
|
||
|
|
#endif /* USE_SYSCONF */
|
||
|
|
|
||
|
|
#ifdef LDAP_DEBUG
|
||
|
|
if ( ldap_debug == 0 ) {
|
||
|
|
#endif
|
||
|
|
for ( i = 0; i < 5; i++ ) {
|
||
|
|
switch ( fork() ) {
|
||
|
|
case -1:
|
||
|
|
sleep( 5 );
|
||
|
|
continue;
|
||
|
|
|
||
|
|
case 0:
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
_exit( 0 );
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
for ( i = 3; i < nbits; i++ )
|
||
|
|
close( i );
|
||
|
|
|
||
|
|
(void) chdir( "/" );
|
||
|
|
|
||
|
|
if ( (sd = open( "/dev/null", O_RDWR )) == -1 ) {
|
||
|
|
perror( "/dev/null" );
|
||
|
|
exit( 1 );
|
||
|
|
}
|
||
|
|
if ( isatty( 0 ) )
|
||
|
|
(void) dup2( sd, 0 );
|
||
|
|
if ( isatty( 1 ) )
|
||
|
|
(void) dup2( sd, 1 );
|
||
|
|
if ( isatty(2) )
|
||
|
|
(void) dup2( sd, 2 );
|
||
|
|
close( sd );
|
||
|
|
|
||
|
|
#ifdef USE_SETSID
|
||
|
|
setsid();
|
||
|
|
#else /* USE_SETSID */
|
||
|
|
if ( (sd = open( "/dev/tty", O_RDWR )) != -1 ) {
|
||
|
|
(void) ioctl( sd, TIOCNOTTY, NULL );
|
||
|
|
(void) close( sd );
|
||
|
|
}
|
||
|
|
#endif /* USE_SETSID */
|
||
|
|
#ifdef LDAP_DEBUG
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
(void) signal( SIGPIPE, SIG_IGN );
|
||
|
|
}
|