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| 2 | pj | 1 | /* |
| 2 | * Project: S.Ha.R.K. |
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| 3 | * |
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| 4 | * Coordinators: |
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| 5 | * Giorgio Buttazzo <giorgio@sssup.it> |
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| 6 | * Paolo Gai <pj@gandalf.sssup.it> |
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| 7 | * |
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| 8 | * Authors : |
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| 9 | * Paolo Gai <pj@gandalf.sssup.it> |
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| 10 | * Massimiliano Giorgi <massy@gandalf.sssup.it> |
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| 11 | * Luca Abeni <luca@gandalf.sssup.it> |
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| 12 | * (see the web pages for full authors list) |
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| 13 | * |
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| 14 | * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
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| 15 | * |
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| 16 | * http://www.sssup.it |
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| 17 | * http://retis.sssup.it |
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| 18 | * http://shark.sssup.it |
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| 19 | */ |
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| 20 | |||
| 21 | /** |
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| 22 | ------------ |
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| 23 | CVS : $Id: realloc.c,v 1.1.1.1 2002-03-29 14:12:53 pj Exp $ |
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| 24 | |||
| 25 | File: $File$ |
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| 26 | Revision: $Revision: 1.1.1.1 $ |
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| 27 | Last update: $Date: 2002-03-29 14:12:53 $ |
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| 28 | ------------ |
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| 29 | **/ |
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| 30 | |||
| 31 | /* |
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| 32 | * Copyright (C) 2000 Paolo Gai |
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| 33 | * |
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| 34 | * This program is free software; you can redistribute it and/or modify |
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| 35 | * it under the terms of the GNU General Public License as published by |
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| 36 | * the Free Software Foundation; either version 2 of the License, or |
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| 37 | * (at your option) any later version. |
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| 38 | * |
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| 39 | * This program is distributed in the hope that it will be useful, |
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| 40 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 41 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 42 | * GNU General Public License for more details. |
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| 43 | * |
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| 44 | * You should have received a copy of the GNU General Public License |
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| 45 | * along with this program; if not, write to the Free Software |
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| 46 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 47 | * |
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| 48 | */ |
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| 49 | |||
| 50 | #include <kernel/func.h> |
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| 51 | #include <sys/types.h> |
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| 52 | #include <string.h> |
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| 53 | #include <stdlib.h> |
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| 54 | |||
| 55 | |||
| 56 | void *realloc(void *ptr, size_t size) |
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| 57 | { |
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| 58 | char *p; // the real pointer returned by kern_alloc |
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| 59 | //size_t oldsize; // the size of the previous chunk |
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| 60 | |||
| 61 | if (!size) { |
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| 62 | return NULL; |
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| 63 | } |
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| 64 | |||
| 65 | if (!ptr) |
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| 66 | return malloc(size); |
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| 67 | |||
| 68 | p = malloc(size); |
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| 69 | |||
| 70 | if (!p) { |
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| 71 | return NULL; |
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| 72 | } |
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| 73 | |||
| 74 | memcpy(p, ptr, size); |
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| 75 | |||
| 76 | |||
| 77 | return (void *)p; |
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| 78 | |||
| 79 | } |