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32 lines
1.1 KiB
C
32 lines
1.1 KiB
C
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/* Fortified version of strlcat.
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Copyright (C) 2023 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 <string.h>
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/* Check that the user-supplied size does not exceed the
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compiler-determined size, and then forward to strlcat. */
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size_t
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__strlcat_chk (char *__restrict s1, const char *__restrict s2,
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size_t n, size_t s1len)
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{
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if (__glibc_unlikely (s1len < n))
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__chk_fail ();
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return __strlcat (s1, s2, n);
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}
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