93 lines
3.1 KiB
C
93 lines
3.1 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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pid_t parent = getpid();
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pid_t child;
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if (argc == 2 && strcmp(argv[1], "--reexec"))
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errx(1, "Usage: test-detach [--reexec] [--daemon-child FD]");
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if (argc == 3 || argc == 4) {
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parent = getppid();
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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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if (argc == 2)
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/* Make sure we re-exec on the child-side of fork() (not WIN32) */
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putenv("ROKEN_DETACH_USE_EXEC=1");
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fd = roken_detach_prep(argc, argv, "--daemon-child");
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if (fd == -1)
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errx(1, "bad");
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}
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if (parent == getpid())
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errx(1, "detach prep failed");
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child = getpid();
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roken_detach_finish(NULL, fd);
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if (child != getpid())
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errx(1, "detach finish failed");
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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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