1 /* 2 * Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC. 3 * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER). 4 * Written by Brian Behlendorf <behlendorf1@llnl.gov>. 5 * UCRL-CODE-235197 6 * 7 * This file is part of the SPL, Solaris Porting Layer. 8 * 9 * The SPL is free software; you can redistribute it and/or modify it 10 * under the terms of the GNU General Public License as published by the 11 * Free Software Foundation; either version 2 of the License, or (at your 12 * option) any later version. 13 * 14 * The SPL is distributed in the hope that it will be useful, but WITHOUT 15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 16 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 17 * for more details. 18 * 19 * You should have received a copy of the GNU General Public License along 20 * with the SPL. If not, see <http://www.gnu.org/licenses/>. 21 */ 22 23 #ifndef _SPL_STRING_H 24 #define _SPL_STRING_H 25 26 #include <linux/string.h> 27 28 /* Fallbacks for kernel missing strlcpy */ 29 #ifndef HAVE_KERNEL_STRLCPY 30 31 #if defined(HAVE_KERNEL_STRSCPY) 32 /* 33 * strscpy is strlcpy, but returns an error on truncation. strlcpy is defined 34 * to return strlen(src), so detect error and override it. 35 */ 36 static inline size_t 37 strlcpy(char *dest, const char *src, size_t size) 38 { 39 ssize_t ret = strscpy(dest, src, size); 40 if (likely(ret > 0)) 41 return ((size_t)ret); 42 return (strlen(src)); 43 } 44 #else 45 #error "no strlcpy fallback available" 46 #endif 47 48 #endif /* HAVE_KERNEL_STRLCPY */ 49 50 #endif /* _SPL_STRING_H */ 51