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authorNicolas Palix <npalix@diku.dk>2010-08-24 17:39:06 +0200
committerMichal Marek <mmarek@suse.cz>2010-08-31 11:37:54 +0200
commit0426a97c4b672166cbcfdc7b18466d4f207f7a36 (patch)
tree613e033f136770f5b2cf4044ec90fb7507a3481b /scripts/coccinelle
parent998f5523230a8a837809f942d556360f69121677 (diff)
downloadlinux-linaro-0426a97c4b672166cbcfdc7b18466d4f207f7a36.tar.gz
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>
Diffstat (limited to 'scripts/coccinelle')
-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 00000000000..b5d722077dc
--- /dev/null
+++ b/scripts/coccinelle/api/memdup.cocci
@@ -0,0 +1,40 @@
+/// Use kmemdup rather than duplicating its implementation
+///
+// Confidence: High
+// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
+// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
+// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
+// URL: http://coccinelle.lip6.fr/
+// Comments:
+// Options: -no_includes -include_headers
+
+virtual patch
+
+@r1@
+expression from,to;
+expression flag;
+position p;
+@@
+
+ to = \(kmalloc@p\|kzalloc@p\)(strlen(from) + 1,flag);
+
+@r2@
+expression x,from,to;
+expression flag,E1;
+position p;
+@@
+
+ x = strlen(from) + 1;
+ ... when != \( x = E1 \| from = E1 \)
+ to = \(kmalloc@p\|kzalloc@p\)(x,flag);
+
+@@
+expression from,to,size,flag;
+position p != {r1.p,r2.p};
+statement S;
+@@
+
+- to = \(kmalloc@p\|kzalloc@p\)(size,flag);
++ to = kmemdup(from,size,flag);
+ if (to==NULL || ...) S
+- memcpy(to, from, size);