/crypto/heimdal/lib/roken/write_pid.c
https://bitbucket.org/freebsd/freebsd-head/ · C · 90 lines · 50 code · 8 blank · 32 comment · 13 complexity · c50e2b9bd2334dcd21c662a4bcb4cb3d MD5 · raw file
- /*
- * Copyright (c) 1999 - 2001 Kungliga Tekniska Hรถgskolan
- * (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.
- */
- #include <config.h>
- #include "roken.h"
- ROKEN_LIB_FUNCTION char * ROKEN_LIB_CALL
- pid_file_write (const char *progname)
- {
- char *ret = NULL;
- FILE *fp;
- if (asprintf (&ret, "%s%s.pid", _PATH_VARRUN, progname) < 0 || ret == NULL)
- return NULL;
- fp = fopen (ret, "w");
- if (fp == NULL) {
- free (ret);
- return NULL;
- }
- fprintf (fp, "%u", (unsigned)getpid());
- fclose (fp);
- return ret;
- }
- ROKEN_LIB_FUNCTION void ROKEN_LIB_CALL
- 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);
- }
- ROKEN_LIB_FUNCTION void ROKEN_LIB_CALL
- 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