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84980ee0e6
Linux has removed strlcpy in favour of strscpy. This implements a fallback implementation of strlcpy for this case. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Rob Norris <robn@despairlabs.com> Sponsored-by: https://despairlabs.com/sponsor/ Closes #15805
51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
/*
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* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
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* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
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* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
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* UCRL-CODE-235197
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*
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* This file is part of the SPL, Solaris Porting Layer.
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*
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* The SPL is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* The SPL is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with the SPL. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _SPL_STRING_H
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#define _SPL_STRING_H
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#include <linux/string.h>
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/* Fallbacks for kernel missing strlcpy */
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#ifndef HAVE_KERNEL_STRLCPY
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#if defined(HAVE_KERNEL_STRSCPY)
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/*
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* strscpy is strlcpy, but returns an error on truncation. strlcpy is defined
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* to return strlen(src), so detect error and override it.
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*/
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static inline size_t
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strlcpy(char *dest, const char *src, size_t size)
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{
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ssize_t ret = strscpy(dest, src, size);
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if (likely(ret > 0))
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return ((size_t)ret);
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return (strlen(src));
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}
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#else
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#error "no strlcpy fallback available"
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#endif
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#endif /* HAVE_KERNEL_STRLCPY */
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#endif /* _SPL_STRING_H */
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