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/*
* Copyright (C) 2000-2010 by CERN/IT/PDP/DM
* All rights reserved
*/
#ifndef lint
static char sccsid[] = "@(#)$RCSfile: Cinitdaemon.c,v $ $Revision: 3476 $ $Date: 2010-03-10 13:40:05 +0100 (Wed, 10 Mar 2010) $ CERN IT-PDP/DM Olof Barring";
#endif /* not lint */
/*
* Cinitdaemon.c - Common routine for CASTOR daemon initialisation
*/
#if ! defined(_WIN32)
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <signal.h>
#include <errno.h>
#include <osdep.h>
#include <serrno.h>
int DLL_DECL Cinitdaemon(name,wait4child)
char *name;
void (*wait4child) _PROTO((int));
{
int c;
int maxfds;
struct sigaction sa;
#if defined(SOLARIS) || (defined(__osf__) && defined(__alpha)) || defined(linux) || defined(sgi) || defined( __APPLE__)
maxfds = getdtablesize();
#else
maxfds = _NFILE;
#endif
/* Background */
if ((c = fork()) < 0) {
fprintf (stderr, "%s: cannot fork: %s\n",name,sstrerror(errno));
return(-1);
} else
if (c > 0) exit (0);
#if (defined(__osf__) && defined(__alpha)) || defined(linux) || defined( __APPLE__)
c = setsid();
#else
#if hpux
c = setpgrp3();
#else
c = setpgrp();
#endif
#endif
/* Redirect standard files to /dev/null */
freopen( "/dev/null", "r", stdin);
freopen( "/dev/null", "w", stdout);
freopen( "/dev/null", "w", stderr);
for (c = 3; c < maxfds; c++)
close (c);
if ( wait4child != NULL ) {
sa.sa_handler = wait4child;
sa.sa_flags = SA_RESTART;
sigaction (SIGCHLD, &sa, NULL);
}
return (maxfds);
}
#endif
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