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/// Remove casting the values returned by memory allocation functions /// like kmalloc, kzalloc, kmem_cache_alloc, kmem_cache_zalloc etc. /// //# This makes an effort to find cases of casting of values returned by //# 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. // // Confidence: High // Copyright: 2014, Himangi Saraogi GPLv2. // Comments: // Options: --no-includes --include-headers // virtual context virtual patch virtual org virtual report //---------------------------------------------------------- // For context mode //---------------------------------------------------------- @depends on context@ type T; @@ * (T *) \(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\| kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\)(...) //---------------------------------------------------------- // For patch mode //---------------------------------------------------------- @depends on patch@ type T; @@ - (T *) (\(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\| kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\)(...)) //---------------------------------------------------------- // For org and report mode //---------------------------------------------------------- @r depends on org || report@ type T; position p; @@ (T@p *)\(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\| kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\)(...) @script:python depends on org@ p << r.p; t << r.T; @@ coccilib.org.print_safe_todo(p[0], t) @script:python depends on report@ p << r.p; t << r.T; @@ msg="WARNING: casting value returned by memory allocation function to (%s *) is useless." % (t) coccilib.report.print_report(p[0], msg)