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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /scripts/coccinelle/api/memdup.cocci
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'scripts/coccinelle/api/memdup.cocci')
-rw-r--r--scripts/coccinelle/api/memdup.cocci66
1 files changed, 66 insertions, 0 deletions
diff --git a/scripts/coccinelle/api/memdup.cocci b/scripts/coccinelle/api/memdup.cocci
new file mode 100644
index 0000000000..d28741c698
--- /dev/null
+++ b/scripts/coccinelle/api/memdup.cocci
@@ -0,0 +1,66 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/// Use kmemdup rather than duplicating its implementation
+///
+// Confidence: High
+// Copyright: (C) 2010-2012 Nicolas Palix.
+// Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6.
+// Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6.
+// URL: https://coccinelle.gitlabpages.inria.fr/website
+// Comments:
+// Options: --no-includes --include-headers
+
+virtual patch
+virtual context
+virtual org
+virtual report
+
+@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);
+
+@depends on patch@
+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);
+
+@r depends on !patch@
+expression from,to,size,flag;
+position p != {r1.p,r2.p};
+statement S;
+@@
+
+* to = \(kmalloc@p\|kzalloc@p\)(size,flag);
+ if (to==NULL || ...) S
+* memcpy(to, from, size);
+
+@script:python depends on org@
+p << r.p;
+@@
+
+coccilib.org.print_todo(p[0], "WARNING opportunity for kmemdup")
+
+@script:python depends on report@
+p << r.p;
+@@
+
+coccilib.report.print_report(p[0], "WARNING opportunity for kmemdup")