mirror of
https://github.com/FirebirdSQL/firebird.git
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107 lines
2.5 KiB
C++
107 lines
2.5 KiB
C++
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/*
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* PROGRAM: UNIX signal relay program
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* MODULE: relay.c
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* DESCRIPTION: Signal relay program
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*
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* The contents of this file are subject to the Interbase Public
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* License Version 1.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy
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* of the License at http://www.Inprise.com/IPL.html
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*
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* Software distributed under the License is distributed on an
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* "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express
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* or implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code was created by Inprise Corporation
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* and its predecessors. Portions created by Inprise Corporation are
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* Copyright (C) Inprise Corporation.
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*
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* All Rights Reserved.
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* Contributor(s): ______________________________________.
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*/
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#include "../jrd/ib_stdio.h"
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#include <sys/param.h>
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#include <signal.h>
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#include "../jrd/common.h"
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#include "../jrd/license.h"
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#ifndef NOFILE
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#define NOFILE 20
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#endif
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int CLIB_ROUTINE main( int argc, char **argv)
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{
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/**************************************
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*
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* m a i n
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*
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**************************************
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*
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* Functional description
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* Wait on a pipe for a message, then forward a signal.
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*
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**************************************/
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SLONG msg[3];
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int fd, n;
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TEXT **end, *p, c;
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#ifndef DEBUG
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if (setreuid(0, 0) < 0)
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ib_printf("gds_relay: couldn't set uid to superuser\n");
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SETPGRP;
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signal(SIGINT, SIG_IGN);
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signal(SIGQUIT, SIG_IGN);
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#endif
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/* Get the file descriptor ID - if it is present - make sure it's valid */
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if (argc < 2 || (!(fd = atoi(argv[1])) && strcmp(argv[1], "0")))
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fd = -1;
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end = argv + argc;
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while (argv < end) {
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p = *argv++;
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if (*p++ == '-')
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while (c = *p++)
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switch (UPPER(c)) {
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case 'Z':
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ib_printf("Interbase relay version %s\n", GDS_VERSION);
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exit(FINI_OK);
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}
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}
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if (fd == -1)
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exit(FINI_OK);
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/* Close all files, except for the pipe input */
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for (n = 0; n < NOFILE; n++)
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#ifdef DEV_BUILD
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/* Don't close ib_stderr - we might need to report something */
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if ((n != fd) && (n != 2))
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#else
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if (n != fd)
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#endif
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close(n);
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while (read(fd, msg, sizeof(msg)) == sizeof(msg)) {
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#ifdef DEV_BUILD
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/* This is #ifdef for DEV_BUILD just in case a V3 client will
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* attempt communication with this V4 version.
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*/
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if (msg[2] != (msg[0] ^ msg[1])) {
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ib_fprintf(ib_stderr, "gds_relay received inconsistant message");
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}
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#endif
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if (kill(msg[0], msg[1])) {
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#ifdef DEV_BUILD
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ib_fprintf(ib_stderr, "gds_relay error on kill()");
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#endif
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};
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}
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exit(FINI_OK);
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}
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