mirror of
https://github.com/FirebirdSQL/firebird.git
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102 lines
2.4 KiB
C++
102 lines
2.4 KiB
C++
/*
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* PROGRAM: JRD Access Method
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* MODULE: divorce.c
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* DESCRIPTION: Divorce process from controlling terminal
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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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#ifdef SUPERSERVER
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#define FD_SETSIZE 256
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#endif /* SUPERSERVER */
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#include "firebird.h"
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#include <sys/ioctl.h>
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#include <sys/param.h>
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#include <sys/types.h>
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#ifdef _AIX
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#include <sys/select.h>
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#endif
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#include "../jrd/common.h"
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#ifndef NOFILE
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#define NOFILE 20
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#endif
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#ifndef NBBY
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#define NBBY 8
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#endif
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#ifndef NFDBITS
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#define NFDBITS (sizeof(SLONG) * NBBY)
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#ifndef NETWARE_386
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#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS)))
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#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS)))
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#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS)))
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#define FD_ZERO(p) bzero((SCHAR *)(p), sizeof(*(p)))
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#endif
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#endif
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void divorce_terminal( fd_set * mask)
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{
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/**************************************
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*
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* d i v o r c e _ t e r m i n a l
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*
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**************************************
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*
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* Functional description
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* Clean up everything in preparation to become an independent
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* process. Close all files except for marked by the input mask.
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*
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**************************************/
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int s, fid;
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/* Close all files other than those explicitly requested to stay open */
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for (fid = 0; fid < NOFILE; fid++)
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if (!(FD_ISSET(fid, mask)))
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close(fid);
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#ifdef SIGTTOU
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/* ignore all the teminal related signal if define */
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signal(SIGTTOU, SIG_IGN);
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signal(SIGTTIN, SIG_IGN);
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signal(SIGTSTP, SIG_IGN);
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#endif
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/* Perform terminal divorce */
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fid = open("/dev/tty", 2);
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if (fid >= 0) {
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#ifdef TIOCNOTTY
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ioctl(fid, TIOCNOTTY, 0);
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#endif
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close(fid);
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}
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/* Finally, get out of the process group */
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#ifndef NETWARE_386
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setpgrp(0, 0);
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#endif
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}
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