1/// Use kmemdup rather than duplicating its implementation
 2///
 3// Confidence: High
 4// Copyright: (C) 2010 Nicolas Palix, DIKU.  GPLv2.
 5// Copyright: (C) 2010 Julia Lawall, DIKU.  GPLv2.
 6// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6.  GPLv2.
 7// URL: http://coccinelle.lip6.fr/
 8// Comments:
 9// Options: -no_includes -include_headers
10
11virtual patch
12
13@r1@
14expression from,to;
15expression flag;
16position p;
17@@
18
19   to = \(kmalloc@p\|kzalloc@p\)(strlen(from) + 1,flag);
20
21@r2@
22expression x,from,to;
23expression flag,E1;
24position p;
25@@
26
27    x = strlen(from) + 1;
28    ... when != \( x = E1 \| from = E1 \)
29    to = \(kmalloc@p\|kzalloc@p\)(x,flag);
30
31@@
32expression from,to,size,flag;
33position p != {r1.p,r2.p};
34statement S;
35@@
36
37-  to = \(kmalloc@p\|kzalloc@p\)(size,flag);
38+  to = kmemdup(from,size,flag);
39   if (to==NULL || ...) S
40-  memcpy(to, from, size);