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Commit f853f830 authored by Nicolas Palix's avatar Nicolas Palix Committed by Michal Marek
Browse files

Add scripts/coccinelle/err_cast.cocci 



Add a Coccinelle file to use the ERR_CAST function

Before the release 2.6.25, one had to use ERR_PTR(PTR_ERR(...))  to
convert the pointer type of an error. Since then, the function
ERR_CAST has been available for that purpose.

Signed-off-by: default avatarNicolas Palix <npalix@diku.dk>
Signed-off-by: default avatarJulia Lawall <julia@diku.dk>
Signed-off-by: default avatarMichal Marek <mmarek@suse.cz>
parent 09c35396

scripts/coccinelle/err_cast.cocci

0 → 100644
+56 −0
Original line number Diff line number Diff line 
///

/// Use ERR_CAST inlined function instead of ERR_PTR(PTR_ERR(...))

///

// Confidence: High

// Copyright: (C) 2009, 2010 Nicolas Palix, DIKU.  GPLv2.

// Copyright: (C) 2009, 2010 Julia Lawall, DIKU.  GPLv2.

// Copyright: (C) 2009, 2010 Gilles Muller, INRIA/LiP6.  GPLv2.

// URL: http://coccinelle.lip6.fr/

// Options:

//

// Keywords: ERR_PTR, PTR_ERR, ERR_CAST

// Version min: 2.6.25

//



virtual context

virtual patch

virtual org

virtual report





@ depends on context && !patch && !org && !report@

expression x;

@@



* ERR_PTR(PTR_ERR(x))



@ depends on !context && patch && !org && !report @

expression x;

@@



- ERR_PTR(PTR_ERR(x))

+ ERR_CAST(x)



@r depends on !context && !patch && (org || report)@

expression x;

position p;

@@



 ERR_PTR@p(PTR_ERR(x))



@script:python depends on org@

p << r.p;

x << r.x;

@@



msg="WARNING ERR_CAST can be used with %s" % (x)

msg_safe=msg.replace("[","@(").replace("]",")")

coccilib.org.print_todo(p[0], msg_safe)



@script:python depends on report@

p << r.p;

x << r.x;

@@



msg="WARNING: ERR_CAST can be used with %s" % (x)

coccilib.report.print_report(p[0], msg)