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1 /*

3 *

4 * @APPLE_LICENSE_HEADER_START@

5 *

7 * Reserved. This file contains Original Code and/or Modifications of

8 * Original Code as defined in and that are subject to the Apple Public

9 * Source License Version 1.1 (the "License"). You may not use this file

10 * except in compliance with the License. Please obtain a copy of the

11 * License at http://www.apple.com/publicsource and read it before using

12 * this file.

13 *

14 * The Original Code and all software distributed under the License are

15 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER

16 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,

17 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,

18 * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT. Please see the

19 * License for the specific language governing rights and limitations

20 * under the License.

21 *

22 * @APPLE_LICENSE_HEADER_END@

23 */

24 /*

25 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for

26 * unrestricted use provided that this legend is included on all tape

27 * media and as a part of the software program in whole or part. Users

28 * may copy or modify Sun RPC without charge, but are not authorized

29 * to license or distribute it to anyone else except as part of a product or

30 * program developed by the user.

31 *

32 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE

33 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR

34 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.

35 *

36 * Sun RPC is provided with no support and without any obligation on the

37 * part of Sun Microsystems, Inc. to assist in its use, correction,

38 * modification or enhancement.

39 *

40 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE

41 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC

42 * OR ANY PART THEREOF.

43 *

44 * In no event will Sun Microsystems, Inc. be liable for any lost revenue

45 * or profits or other special, indirect and consequential damages, even if

46 * Sun has been advised of the possibility of such damages.

47 *

48 * Sun Microsystems, Inc.

49 * 2550 Garcia Avenue

50 * Mountain View, California 94043

51 */

53 #if defined(LIBC_SCCS) && !defined(lint)

54 /*static char *sccsid = "from: @(#)rpc_dtablesize.c 1.2 87/08/11 Copyr 1987 Sun Micro";*/

55 /*static char *sccsid = "from: @(#)rpc_dtablesize.c 2.1 88/07/29 4.0 RPCSRC";*/

 static char *rcsid = "$Id: rpc_dtablesize.c,v 1.3 2002/02/19 20:36:24 epeyton Exp $";

57 #endif

59 #include <unistd.h>

60 #include <sys/types.h>

62 /*

63 * Cache the result of getdtablesize(), so we don't have to do an

64 * expensive system call every time.

65 */

66 int

67 _rpc_dtablesize()

68 {

69 static int size;

         if (size == 0) {

72 size = getdtablesize();

73 #ifdef FD_SETSIZE

74 /* prevent select() from breaking */

75 if (size > FD_SETSIZE)

76 size = FD_SETSIZE;

77 #endif

78 }

79 return (size);

80 }