96 lines
2.6 KiB
C
96 lines
2.6 KiB
C
/*
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* Copyright (c) 1999 - 2000 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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RCSID("$Id: write_pid.c,v 1.4 2000/08/04 11:19:41 joda Exp $");
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#endif
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#include <stdio.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <roken.h>
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#include "roken.h"
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char *
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pid_file_write (const char *progname)
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{
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FILE *fp;
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char *ret;
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asprintf (&ret, "%s%s.pid", _PATH_VARRUN, progname);
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if (ret == NULL)
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return NULL;
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fp = fopen (ret, "w");
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if (fp == NULL) {
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free (ret);
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return NULL;
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}
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fprintf (fp, "%u", (unsigned)getpid());
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fclose (fp);
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return ret;
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}
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void
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pid_file_delete (char **filename)
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{
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if (*filename != NULL) {
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unlink (*filename);
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free (*filename);
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*filename = NULL;
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}
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}
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#ifndef HAVE_PIDFILE
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static char *pidfile_path;
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static void
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pidfile_cleanup(void)
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{
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if(pidfile_path != NULL)
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pid_file_delete(&pidfile_path);
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}
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void
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pidfile(const char *basename)
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{
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if(pidfile_path != NULL)
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return;
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if(basename == NULL)
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basename = __progname;
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pidfile_path = pid_file_write(basename);
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atexit(pidfile_cleanup);
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}
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#endif
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