50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
/*
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Copyright (C) Andrew Tridgell 1998
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* support the max connections option */
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#include "rsync.h"
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/****************************************************************************
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simple routine to do connection counting
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****************************************************************************/
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int claim_connection(char *fname,int max_connections)
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{
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int fd, i;
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if (max_connections <= 0)
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return 1;
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fd = open(fname,O_RDWR|O_CREAT, 0600);
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if (fd == -1) {
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return 0;
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}
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/* find a free spot */
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for (i=0;i<max_connections;i++) {
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if (lock_range(fd, i*4, 4)) return 1;
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}
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/* only interested in open failures */
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errno = 0;
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close(fd);
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return 0;
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}
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