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35 lines
1.2 KiB
C
35 lines
1.2 KiB
C
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/* Close a range of file descriptors.
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Copyright (C) 2021 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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<https://www.gnu.org/licenses/>. */
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#include <stdio.h>
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#include <unistd.h>
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#include <not-cancel.h>
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void
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__closefrom (int lowfd)
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{
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int maxfd = __getdtablesize ();
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if (maxfd == -1)
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__fortify_fail ("closefrom failed to get the file descriptor table size");
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for (int i = 0; i < maxfd; i++)
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if (i >= lowfd)
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__close_nocancel_nostatus (i);
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}
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weak_alias (__closefrom, closefrom)
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