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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 = "rpc_dtablesize.c,v 1.1 1994/08/07 18:36:02 wollman 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).
* This can lead to many RPC functions getting back an EINVAL from
* select() and bombing all over the place.
*
* You can apparently get select() to handle values larger than 256
* by patching the kernel, but most people aren't likely to know
* that. Clamping this function at 256 is a kludge, but it'll have to
* do until select()'s descriptor table size can be adjusted dynamically.
*/
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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