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+/* Copyright (C) 1991, 1993, 1995, 1996, 1997 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Library General Public License as
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+ published by the Free Software Foundation; either version 2 of the
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+ License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Library General Public License for more details.
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+
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+ You should have received a copy of the GNU Library General Public
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+ License along with the GNU C Library; see the file COPYING.LIB. If not,
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+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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+ Boston, MA 02111-1307, USA. */
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+
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+#include <limits.h>
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+#include <unistd.h>
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+#include <sys/resource.h>
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+
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+/* Return the maximum number of file descriptors
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+ the current process could possibly have. */
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+int getdtablesize (void)
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+{
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+ struct rlimit ru;
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+
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+ /* This should even work if `getrlimit' is not implemented. POSIX.1
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+ does not define this function but we will generate a stub which
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+ returns -1. */
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+ return getrlimit (RLIMIT_NOFILE, &ru) < 0 ? OPEN_MAX : ru.rlim_cur;
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+}
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+
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