?? rpc_dtablesize.c
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/* * Sun RPC is a product of Sun Microsystems, Inc. and is provided for * unrestricted use provided that this legend is included on all tape * media and as a part of the software program in whole or part. Users * may copy or modify Sun RPC without charge, but are not authorized * to license or distribute it to anyone else except as part of a product or * program developed by the user. * * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. * * Sun RPC is provided with no support and without any obligation on the * part of Sun Microsystems, Inc. to assist in its use, correction, * modification or enhancement. * * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC * OR ANY PART THEREOF. * * In no event will Sun Microsystems, Inc. be liable for any lost revenue * or profits or other special, indirect and consequential damages, even if * Sun has been advised of the possibility of such damages. * * Sun Microsystems, Inc. * 2550 Garcia Avenue * Mountain View, California 94043 */#if defined(LIBC_SCCS) && !defined(lint)/*static char *sccsid = "from: @(#)rpc_dtablesize.c 1.2 87/08/11 Copyr 1987 Sun Micro";*//*static char *sccsid = "from: @(#)rpc_dtablesize.c 2.1 88/07/29 4.0 RPCSRC";*/static char *rcsid = "$Id: rpc_dtablesize.c,v 1.9 1997/05/28 05:05:19 wpaul Exp $";#endif#include <sys/types.h>#include <unistd.h>/* * Cache the result of getdtablesize(), so we don't have to do an * expensive system call every time. *//* * XXX In FreeBSD 2.x, you can have the maximum number of open file * descriptors be greater than FD_SETSIZE (which us 256 by default). * * Since old programs tend to use this call to determine the first arg * for select(), having this return > FD_SETSIZE is a Bad Idea(TM)! */int_rpc_dtablesize(void){ static int size; if (size == 0) { size = getdtablesize(); if (size > FD_SETSIZE) size = FD_SETSIZE; } return (size);}
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