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-rw-r--r--cpukit/librpc/src/rpc/rpc_dtablesize.c61
1 files changed, 61 insertions, 0 deletions
diff --git a/cpukit/librpc/src/rpc/rpc_dtablesize.c b/cpukit/librpc/src/rpc/rpc_dtablesize.c
index e69de29bb2..e07c0b6568 100644
--- a/cpukit/librpc/src/rpc/rpc_dtablesize.c
+++ b/cpukit/librpc/src/rpc/rpc_dtablesize.c
@@ -0,0 +1,61 @@
+/*
+ * 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 = "$FreeBSD: src/lib/libc/rpc/rpc_dtablesize.c,v 1.10 1999/08/28 00:00:45 peter 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);
+}