18402f0354
Also unified the header exclusion guard names, removed a couple of files that are no longer used, dropped the '3.13.7' from the Copyright header.
97 lines
2.3 KiB
C++
97 lines
2.3 KiB
C++
/*************************************************************************\
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* Copyright (c) 2002 The University of Chicago, as Operator of Argonne
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* National Laboratory.
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* Copyright (c) 2002 The Regents of the University of California, as
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* Operator of Los Alamos National Laboratory.
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* EPICS BASE is distributed subject to a Software License Agreement found
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* in file LICENSE that is included with this distribution.
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\*************************************************************************/
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/*
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*
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* CA UDP repeater standalone executable
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*
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* Author: Jeff Hill
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* Date: 3-27-90
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*
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* PURPOSE:
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* Broadcasts fan out over the LAN, but old IP kernels do not allow
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* two processes on the same machine to get the same broadcast
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* (and modern IP kernels do not allow two processes on the same machine
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* to receive the same unicast).
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*
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* This code fans out UDP messages sent to the CA repeater port
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* to all CA client processes that have subscribed.
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*
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* NOTES:
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*
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* see repeater.c
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*
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*/
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#define epicsAssertAuthor "Jeff Hill johill@lanl.gov"
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#include <stdio.h>
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#if !defined(_WIN32) && !defined(__rtems__) && !defined(vxWorks)
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# include <sys/types.h>
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# include <sys/stat.h>
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# include <fcntl.h>
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#define CAN_DETACH_STDINOUT
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#endif
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#include "epicsAssert.h"
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#include "osiUnistd.h"
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#include "epicsGetopt.h"
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#include "udpiiu.h"
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static void usage(char* argv[])
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{
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fprintf(stderr, "Usage: %s -hv\n"
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"\n"
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" -h - Print this message\n"
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" -v - Do not replace stdin/out/err with /dev/null\n",
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argv[0]);
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}
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int main(int argc, char* argv[])
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{
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bool detachinout = true;
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int opt;
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while ((opt = getopt(argc, argv, "hv")) != -1) {
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switch (opt) {
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default:
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usage(argv);
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fprintf(stderr, "\nUnknown argument '%c'\n", opt);
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return 1;
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case 'h':
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usage(argv);
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return 0;
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case 'v':
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detachinout = false;
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break;
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}
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}
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#ifdef CAN_DETACH_STDINOUT
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if(detachinout) {
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int readfd = open("/dev/null", O_RDONLY);
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int writefd = open("/dev/null", O_WRONLY);
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dup2(readfd, 0);
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dup2(writefd, 1);
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dup2(writefd, 2);
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close(readfd);
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close(writefd);
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}
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#else
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(void)detachinout;
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#endif
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chdir ( "/" );
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ca_repeater ();
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return ( 0 );
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}
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