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44 lines
1.5 KiB
C
44 lines
1.5 KiB
C
/* Copyright (C) 1991-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <unistd.h>
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#include <hurd.h>
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#include <hurd/fd.h>
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#include <hurd/resource.h>
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/* Return the maximum number of file descriptors the current process
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could possibly have (until it raises the resource limit). */
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int
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__getdtablesize (void)
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{
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rlim_t limit;
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HURD_CRITICAL_BEGIN;
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__mutex_lock (&_hurd_rlimit_lock);
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limit = _hurd_rlimits[RLIMIT_NOFILE].rlim_cur;
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__mutex_unlock (&_hurd_rlimit_lock);
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HURD_CRITICAL_END;
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/* RLIM_INFINITY is not meaningful to our caller. -1 is a good choice
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because `sysconf (_SC_OPEN_MAX)' calls us, and -1 from sysconf means
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"no determinable limit". */
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return limit == RLIM_INFINITY ? -1 : (int) limit;
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}
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weak_alias (__getdtablesize, getdtablesize)
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