64 lines
2.3 KiB
C
64 lines
2.3 KiB
C
/*
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* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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* unrestricted use provided that this legend is included on all tape
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* media and as a part of the software program in whole or part. Users
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* may copy or modify Sun RPC without charge, but are not authorized
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* to license or distribute it to anyone else except as part of a product or
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* program developed by the user.
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*
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* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
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*
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* Sun RPC is provided with no support and without any obligation on the
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* part of Sun Microsystems, Inc. to assist in its use, correction,
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* modification or enhancement.
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*
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* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
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* OR ANY PART THEREOF.
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*
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* In no event will Sun Microsystems, Inc. be liable for any lost revenue
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* or profits or other special, indirect and consequential damages, even if
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* Sun has been advised of the possibility of such damages.
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*
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* Sun Microsystems, Inc.
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* 2550 Garcia Avenue
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* Mountain View, California 94043
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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/*static char *sccsid = "from: @(#)rpc_dtablesize.c 1.2 87/08/11 Copyr 1987 Sun Micro";*/
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/*static char *sccsid = "from: @(#)rpc_dtablesize.c 2.1 88/07/29 4.0 RPCSRC";*/
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static char *rcsid = "rpc_dtablesize.c,v 1.1 1994/08/07 18:36:02 wollman Exp";
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#endif
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#include <sys/types.h>
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/*
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* Cache the result of getdtablesize(), so we don't have to do an
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* expensive system call every time.
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*/
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/*
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* XXX In FreeBSD 2.x, you can have the maximum number of open file
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* descriptors be greater than FD_SETSIZE (which us 256 by default).
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* This can lead to many RPC functions getting back an EINVAL from
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* select() and bombing all over the place.
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*
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* You can apparently get select() to handle values larger than 256
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* by patching the kernel, but most people aren't likely to know
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* that. Clamping this function at 256 is a kludge, but it'll have to
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* do until select()'s descriptor table size can be adjusted dynamically.
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*/
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_rpc_dtablesize()
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{
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static int size;
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if (size == 0) {
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size = getdtablesize();
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if (size > FD_SETSIZE)
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size = FD_SETSIZE;
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}
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return (size);
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}
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