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-rw-r--r--scripts/coccinelle/api/alloc/alloc_cast.cocci92
1 files changed, 71 insertions, 21 deletions
diff --git a/scripts/coccinelle/api/alloc/alloc_cast.cocci b/scripts/coccinelle/api/alloc/alloc_cast.cocci
index 6c308ee19b32..408ee3879f9b 100644
--- a/scripts/coccinelle/api/alloc/alloc_cast.cocci
+++ b/scripts/coccinelle/api/alloc/alloc_cast.cocci
@@ -5,10 +5,11 @@
//# kmalloc, kzalloc, kcalloc, kmem_cache_alloc, kmem_cache_zalloc,
//# kmem_cache_alloc_node, kmalloc_node and kzalloc_node and removes
//# the casting as it is not required. The result in the patch case may
-//#need some reformatting.
+//# need some reformatting.
//
// Confidence: High
-// Copyright: 2014, Himangi Saraogi GPLv2.
+// Copyright: (C) 2014 Himangi Saraogi GPLv2.
+// Copyright: (C) 2017 Himanshu Jha GPLv2.
// Comments:
// Options: --no-includes --include-headers
//
@@ -18,55 +19,104 @@ virtual patch
virtual org
virtual report
+@initialize:python@
+@@
+import re
+pattern = '__'
+m = re.compile(pattern)
+
+@r1 depends on context || patch@
+type T;
+@@
+
+ (T *)
+ \(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|
+ kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\|vmalloc\|vzalloc\|
+ dma_alloc_coherent\|dma_zalloc_coherent\|devm_kmalloc\|devm_kzalloc\|
+ kvmalloc\|kvzalloc\|kvmalloc_node\|kvzalloc_node\|pci_alloc_consistent\|
+ pci_zalloc_consistent\|kmem_alloc\|kmem_zalloc\|kmem_zone_alloc\|
+ kmem_zone_zalloc\|vmalloc_node\|vzalloc_node\)(...)
+
//----------------------------------------------------------
// For context mode
//----------------------------------------------------------
-@depends on context@
-type T;
+@script:python depends on context@
+t << r1.T;
+@@
+
+if m.search(t) != None:
+ cocci.include_match(False)
+
+@depends on context && r1@
+type r1.T;
@@
* (T *)
\(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|
- kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\)(...)
+ kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\|vmalloc\|vzalloc\|
+ dma_alloc_coherent\|dma_zalloc_coherent\|devm_kmalloc\|devm_kzalloc\|
+ kvmalloc\|kvzalloc\|kvmalloc_node\|kvzalloc_node\|pci_alloc_consistent\|
+ pci_zalloc_consistent\|kmem_alloc\|kmem_zalloc\|kmem_zone_alloc\|
+ kmem_zone_zalloc\|vmalloc_node\|vzalloc_node\)(...)
//----------------------------------------------------------
// For patch mode
//----------------------------------------------------------
-@depends on patch@
-type T;
+@script:python depends on patch@
+t << r1.T;
+@@
+
+if m.search(t) != None:
+ cocci.include_match(False)
+
+@depends on patch && r1@
+type r1.T;
@@
- (T *)
- (\(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|
- kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\)(...))
+ \(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|
+ kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\|vmalloc\|vzalloc\|
+ dma_alloc_coherent\|dma_zalloc_coherent\|devm_kmalloc\|devm_kzalloc\|
+ kvmalloc\|kvzalloc\|kvmalloc_node\|kvzalloc_node\|pci_alloc_consistent\|
+ pci_zalloc_consistent\|kmem_alloc\|kmem_zalloc\|kmem_zone_alloc\|
+ kmem_zone_zalloc\|vmalloc_node\|vzalloc_node\)(...)
//----------------------------------------------------------
// For org and report mode
//----------------------------------------------------------
-@r depends on org || report@
+@r2 depends on org || report@
type T;
position p;
@@
- (T@p *)\(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|
- kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\)(...)
+ (T@p *)
+ \(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|
+ kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\|vmalloc\|vzalloc\|
+ dma_alloc_coherent\|dma_zalloc_coherent\|devm_kmalloc\|devm_kzalloc\|
+ kvmalloc\|kvzalloc\|kvmalloc_node\|kvzalloc_node\|pci_alloc_consistent\|
+ pci_zalloc_consistent\|kmem_alloc\|kmem_zalloc\|kmem_zone_alloc\|
+ kmem_zone_zalloc\|vmalloc_node\|vzalloc_node\)(...)
@script:python depends on org@
-p << r.p;
-t << r.T;
+p << r2.p;
+t << r2.T;
@@
-coccilib.org.print_safe_todo(p[0], t)
+if m.search(t) != None:
+ cocci.include_match(False)
+else:
+ coccilib.org.print_safe_todo(p[0], t)
@script:python depends on report@
-p << r.p;
-t << r.T;
+p << r2.p;
+t << r2.T;
@@
-msg="WARNING: casting value returned by memory allocation function to (%s *) is useless." % (t)
-coccilib.report.print_report(p[0], msg)
-
-
+if m.search(t) != None:
+ cocci.include_match(False)
+else:
+ msg="WARNING: casting value returned by memory allocation function to (%s *) is useless." % (t)
+ coccilib.report.print_report(p[0], msg)