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/*
* Copyright (c) 1999 - 2001 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* 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. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS 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 INSTITUTE OR 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.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
RCSID("$Id: write_pid.c,v 1.6 2001/09/02 23:58:15 assar Exp $");
#endif
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <roken.h>
#include "roken.h"
char *
pid_file_write (const char *progname)
{
FILE *fp;
char *ret;
asprintf (&ret, "%s%s.pid", _PATH_VARRUN, progname);
if (ret == NULL)
return NULL;
fp = fopen (ret, "w");
if (fp == NULL) {
free (ret);
return NULL;
}
fprintf (fp, "%u", (unsigned)getpid());
fclose (fp);
return ret;
}
void
pid_file_delete (char **filename)
{
if (*filename != NULL) {
unlink (*filename);
free (*filename);
*filename = NULL;
}
}
#ifndef HAVE_PIDFILE
static char *pidfile_path;
static void
pidfile_cleanup(void)
{
if(pidfile_path != NULL)
pid_file_delete(&pidfile_path);
}
void
pidfile(const char *basename)
{
if(pidfile_path != NULL)
return;
if(basename == NULL)
basename = getprogname();
pidfile_path = pid_file_write(basename);
#if defined(HAVE_ATEXIT)
atexit(pidfile_cleanup);
#elif defined(HAVE_ON_EXIT)
on_exit(pidfile_cleanup);
#endif
}
#endif
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