37 lines
1.2 KiB
C
37 lines
1.2 KiB
C
/* Close a range of file descriptors.
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Copyright (C) 2021-2022 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 <stdbool.h>
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#include <stdio.h>
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#include <sys/param.h>
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#include <unistd.h>
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void
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__closefrom (int lowfd)
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{
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int l = MAX (0, lowfd);
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int r = __close_range (l, ~0U, 0);
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if (r == 0)
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return ;
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if (!__closefrom_fallback (l, true))
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__fortify_fail ("closefrom failed to close a file descriptor");
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}
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weak_alias (__closefrom, closefrom)
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