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.
83 lines
2.8 KiB
C
83 lines
2.8 KiB
C
/***********************************************************************
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* Copyright (c) 2015, Cryptonector LLC
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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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* - 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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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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**********************************************************************/
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#include <config.h>
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#include <sys/types.h>
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#include <err.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <string.h>
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#ifdef WIN32
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#include <process.h>
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#ifdef getpid
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#undef getpid
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#endif
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#define getpid _getpid
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#else
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#include <unistd.h>
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#endif
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#include "roken.h"
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int main(int argc, char **argv)
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{
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char *ends;
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long n;
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int fd = -1;
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if (argc > 1) {
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if (argc != 3)
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errx(1, "Usage: test-detach [--daemon-child fd]");
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fprintf(stderr, "Child started (argv[1] = %s, argv[2] = %s)!\n", argv[1], argv[2]);
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errno = 0;
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n = strtol(argv[2], &ends, 10);
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fd = n;
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if (errno != 0)
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err(1, "Usage: test-detach [--daemon-child fd]");
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if (n < 0 || ends == NULL || *ends != '\0' || n != fd)
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errx(1, "Usage: test-detach [--daemon-child fd]");
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} else {
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fprintf(stderr, "Parent started as %ld\n", (long)getpid());
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roken_detach_prep(argc, argv, "--daemon-child");
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}
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fprintf(stderr, "Now should be the child: %ld\n", (long)getpid());
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roken_detach_finish(NULL, fd);
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/*
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* These printfs will not appear: stderr will have been replaced
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* with /dev/null.
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*/
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fprintf(stderr, "Now should be the child: %ld, wrote to parent\n", (long)getpid());
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sleep(5);
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fprintf(stderr, "Daemon child done\n");
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return 0;
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}
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