b48bed5f42
Tests that start daemons have to "wait" for them to start. This commit makes Heimdal daemons prep to detach (when requested) by forking early, then having the child signal readiness to the parent when the child really is ready. The parent exits only which the child is ready. This means that tests will no longer need to wait for daemons. However, tests will still need a pidfile or such so they can stop the daemons. Note that the --detach options should not be used on OS X from launchd, only from tests.
104 lines
3.1 KiB
C
104 lines
3.1 KiB
C
/*
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* Copyright (c) 1999 - 2001 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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#include <config.h>
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#include "roken.h"
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ROKEN_LIB_FUNCTION char * ROKEN_LIB_CALL
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pid_file_write(const char *progname)
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{
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const char *pidfile_dir = NULL;
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char *ret = NULL;
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FILE *fp;
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/*
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* Maybe we could have a version of this function (and pidfile())
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* where we get a directory from the caller. That would allow us to
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* have command-line options for the daemons for this.
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*
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* For now we use an environment variable.
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*/
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if (!issuid())
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pidfile_dir = getenv("HEIM_PIDFILE_DIR");
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if (pidfile_dir == NULL)
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pidfile_dir = _PATH_VARRUN;
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if (asprintf(&ret, "%s%s.pid", pidfile_dir, progname) < 0 || 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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ROKEN_LIB_FUNCTION void ROKEN_LIB_CALL
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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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ROKEN_LIB_FUNCTION void ROKEN_LIB_CALL
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pidfile(const char *bname)
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{
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if (pidfile_path != NULL)
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return;
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if (bname == NULL)
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bname = getprogname();
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pidfile_path = pid_file_write(bname);
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#if defined(HAVE_ATEXIT)
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atexit(pidfile_cleanup);
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#elif defined(HAVE_ON_EXIT)
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on_exit(pidfile_cleanup);
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#endif
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}
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#endif
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