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/* ====================================================================
* Copyright (c) 1999 The Apache Group. 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. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the Apache Group
* for use in the Apache HTTP server project (http://www.apache.org/)."
*
* 4. The names "Apache Server" and "Apache Group" 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 names without prior written
* permission of the Apache Group.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the Apache Group
* for use in the Apache HTTP server project (http://www.apache.org/)."
*
* THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``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 GROUP 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 Group.
* For more information on the Apache Group and the Apache HTTP server
* project, please see <http://www.apache.org/>.
*
*/
#include "threadproc.h"
#include "fileio.h"
#include "apr_config.h"
#include "apr_thread_proc.h"
#include "apr_file_io.h"
#include "apr_general.h"
#include "apr_lib.h"
#include <unistd.h>
/* ***APRDOC********************************************************
* ap_status_t ap_detach(ap_context_t *, ap_proc_t *)
* Detach the process from the controlling terminal.
* arg 1) The context to use if it is needed.
* arg 2) The new process handler
*/
ap_status_t ap_detach(struct proc_t **new, ap_context_t *cont)
{
int x;
(*new) = (struct proc_t *)ap_palloc(cont, sizeof(struct proc_t));
(*new)->cntxt = cont;
(*new)->attr = NULL;
chdir("/");
#if !defined(MPE) && !defined(OS2) && !defined(TPF)
/* 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 HAVE_SETSID
if (((*new)->pid = setsid()) == -1) {
return errno;
}
#elif defined(NEXT) || defined(NEWSOS)
if (setpgrp(0, getpid()) == -1 || ((*new)->pid = getpgrp(0)) == -1) {
return errno;
}
#elif defined(OS2) || defined(TPF)
/* OS/2 don't support process group IDs */
(*new)->pid = getpid();
#elif defined(MPE)
/* MPE uses negative pid for process group */
(*new)->pid = -getpid();
#else
if (((*new)->pid = setpgrp(getpid(), 0)) == -1) {
return errno;
}
#endif
/* close out the standard file descriptors */
if (freopen("/dev/null", "r", stdin) == NULL) {
return APR_ALLSTD;
/* 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 APR_STDOUT;
}
/* 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 APR_STDERR;
}
return APR_SUCCESS;
}
/* ***APRDOC********************************************************
* ap_status_t ap_get_procdata(char *, void *, ap_proc_t *)
* Return the context associated with the current proc.
* arg 1) The currently open proc.
* arg 2) The user data associated with the proc.
*/
ap_status_t ap_get_procdata(char *key, void *data, struct proc_t *proc)
{
if (proc != NULL) {
return ap_get_userdata(data, key, proc->cntxt);
}
else {
data = NULL;
return APR_ENOPROC;
}
}
/* ***APRDOC********************************************************
* ap_status_t ap_set_procdata(ap_proc_t *, void *, char *key,
ap_status_t (*cleanup) (void *))
* Return the context associated with the current proc.
* arg 1) The currently open proc.
* arg 2) The user data to associate with the proc.
*/
ap_status_t ap_set_procdata(void *data, char *key,
ap_status_t (*cleanup) (void *),
struct proc_t *proc)
{
if (proc != NULL) {
return ap_set_userdata(data, key, cleanup, proc->cntxt);
}
else {
data = NULL;
return APR_ENOPROC;
}
}
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