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