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config.h (or, transitively, zebra.h) must be the first include file listed for autoconf things like _GNU_SOURCE and _POSIX_C_SOURCE to work correctly. Signed-off-by: David Lamparter <equinox@diac24.net>
59 lines
1.9 KiB
C
59 lines
1.9 KiB
C
/* Copy a null-terminated string to a fixed-size buffer, with length checking.
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* Copyright (C) 2016 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 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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*
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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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*
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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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*/
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/* adapted for Quagga from glibc patch submission originally from
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* Florian Weimer <fweimer@redhat.com>, 2016-05-18 */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#ifndef HAVE_STRLCPY
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#undef strlcpy
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size_t strlcpy(char *__restrict dest,
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const char *__restrict src, size_t destsize);
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size_t strlcpy(char *__restrict dest,
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const char *__restrict src, size_t destsize)
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{
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size_t src_length = strlen(src);
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if (__builtin_expect(src_length >= destsize, 0)) {
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if (destsize > 0) {
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/*
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* Copy the leading portion of the string. The last
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* character is subsequently overwritten with the NUL
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* terminator, but the destination destsize is usually
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* a multiple of a small power of two, so writing it
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* twice should be more efficient than copying an odd
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* number of bytes.
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*/
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memcpy(dest, src, destsize);
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dest[destsize - 1] = '\0';
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}
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} else
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/* Copy the string and its terminating NUL character. */
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memcpy(dest, src, src_length + 1);
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return src_length;
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}
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#endif /* HAVE_STRLCPY */
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