--- /dev/null
+/*
+ * 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.
+ */
+
+#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