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/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000-2002 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
#include "threadproc.h"
apr_status_t apr_proc_detach(int daemonize)
{
#if 0
int x;
pid_t pgrp;
chdir("/");
#if !defined(MPE) && !defined(OS2) && !defined(TPF) && !defined(BEOS)
/* Don't detach for MPE because child processes can't survive the death of
the parent. */
if ((x = fork()) > 0)
exit(0);
else if (x == -1) {
perror("fork");
fprintf(stderr, "unable to fork new process\n");
exit(1); /* we can't do anything here, so just exit. */
}
/* RAISE_SIGSTOP(DETACH);*/
#endif
#if APR_HAVE_SETSID
if ((pgrp = setsid()) == -1) {
return errno;
}
#elif defined(NEXT) || defined(NEWSOS)
if (setpgrp(0, getpid()) == -1 || (pgrp = getpgrp(0)) == -1) {
return errno;
}
#elif defined(OS2) || defined(TPF)
/* OS/2 don't support process group IDs */
pgrp = getpid();
#elif defined(MPE)
/* MPE uses negative pid for process group */
pgrp = -getpid();
#else
if ((pgrp = setpgid(0, 0)) == -1) {
return errno;
}
#endif
/* close out the standard file descriptors */
if (freopen("/dev/null", "r", stdin) == NULL) {
return errno;
/* continue anyhow -- note we can't close out descriptor 0 because we
* have nothing to replace it with, and if we didn't have a descriptor
* 0 the next file would be created with that value ... leading to
* havoc.
*/
}
if (freopen("/dev/null", "w", stdout) == NULL) {
return errno;
}
/* We are going to reopen this again in a little while to the error
* log file, but better to do it twice and suffer a small performance
* hit for consistancy than not reopen it here.
*/
if (freopen("/dev/null", "w", stderr) == NULL) {
return errno;
}
#endif
return APR_SUCCESS;
}
#if 0
#if (!HAVE_WAITPID)
/* From ikluft@amdahl.com
* this is not ideal but it works for SVR3 variants
* Modified by dwd@bell-labs.com to call wait3 instead of wait because
* apache started to use the WNOHANG option.
*/
int waitpid(pid_t pid, int *statusp, int options)
{
int tmp_pid;
if (kill(pid, 0) == -1) {
errno = ECHILD;
return -1;
}
while (((tmp_pid = wait3(statusp, options, 0)) != pid) &&
(tmp_pid != -1) && (tmp_pid != 0) && (pid != -1))
;
return tmp_pid;
}
#endif
#endif
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