1 /* Copyright (C) 1996, 1997, 1998, 2001, 2002, 2003, 2005, 2006 Free 2 Software Foundation, Inc. 3 4 NOTE: The canonical source of this file is maintained with the GNU C Library. 5 Bugs can be reported to bug-glibc (at) prep.ai.mit.edu. 6 7 This program is free software; you can redistribute it and/or modify it 8 under the terms of the GNU General Public License as published by the 9 Free Software Foundation; either version 2, or (at your option) any 10 later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software Foundation, 19 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ 20 21 #ifdef HAVE_CONFIG_H 22 # include <config.h> 23 #endif 24 #if !_LIBC 25 # include "strndup.h" 26 #endif 27 28 #include <stdlib.h> 29 #include <string.h> 30 31 #if !_LIBC 32 # include "strnlen.h" 33 # ifndef __strnlen 34 # define __strnlen strnlen 35 # endif 36 #endif 37 38 #undef __strndup 39 #if _LIBC 40 # undef strndup 41 #endif 42 43 #ifndef weak_alias 44 # define __strndup strndup 45 #endif 46 47 char * 48 __strndup (s, n) 49 const char *s; 50 size_t n; 51 { 52 size_t len = __strnlen (s, n); 53 char *new = malloc (len + 1); 54 55 if (new == NULL) 56 return NULL; 57 58 new[len] = '\0'; 59 return memcpy (new, s, len); 60 } 61 #ifdef libc_hidden_def 62 libc_hidden_def (__strndup) 63 #endif 64 #ifdef weak_alias 65 weak_alias (__strndup, strndup) 66 #endif 67
