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authorNicolas Palix <npalix@diku.dk>2010-08-24 11:39:06 -0400
committerMichal Marek <mmarek@suse.cz>2010-08-31 05:37:54 -0400
commit0426a97c4b672166cbcfdc7b18466d4f207f7a36 (patch)
tree613e033f136770f5b2cf4044ec90fb7507a3481b
parent998f5523230a8a837809f942d556360f69121677 (diff)
Coccinelle: Add api/memdup.cocci
Use kmemdup rather than duplicating its implementation Signed-off-by: Nicolas Palix <npalix@diku.dk> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Michal Marek <mmarek@suse.cz>
-rw-r--r--scripts/coccinelle/api/memdup.cocci40
1 files changed, 40 insertions, 0 deletions
diff --git a/scripts/coccinelle/api/memdup.cocci b/scripts/coccinelle/api/memdup.cocci
new file mode 100644
index 000000000000..b5d722077dc1
--- /dev/null
+++ b/scripts/coccinelle/api/memdup.cocci
@@ -0,0 +1,40 @@
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);