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