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/scripts/coccinelle/api/err_cast.cocci

http://github.com/mirrors/linux
Unknown | 56 lines | 44 code | 12 blank | 0 comment | 0 complexity | 84b43b07478ea8861aa9260ad4b79006 MD5 | raw file
 1///
 2/// Use ERR_CAST inlined function instead of ERR_PTR(PTR_ERR(...))
 3///
 4// Confidence: High
 5// Copyright: (C) 2009, 2010 Nicolas Palix, DIKU.  GPLv2.
 6// Copyright: (C) 2009, 2010 Julia Lawall, DIKU.  GPLv2.
 7// Copyright: (C) 2009, 2010 Gilles Muller, INRIA/LiP6.  GPLv2.
 8// URL: http://coccinelle.lip6.fr/
 9// Options:
10//
11// Keywords: ERR_PTR, PTR_ERR, ERR_CAST
12// Version min: 2.6.25
13//
14
15virtual context
16virtual patch
17virtual org
18virtual report
19
20
21@ depends on context && !patch && !org && !report@
22expression x;
23@@
24
25* ERR_PTR(PTR_ERR(x))
26
27@ depends on !context && patch && !org && !report @
28expression x;
29@@
30
31- ERR_PTR(PTR_ERR(x))
32+ ERR_CAST(x)
33
34@r depends on !context && !patch && (org || report)@
35expression x;
36position p;
37@@
38
39 ERR_PTR@p(PTR_ERR(x))
40
41@script:python depends on org@
42p << r.p;
43x << r.x;
44@@
45
46msg="WARNING ERR_CAST can be used with %s" % (x)
47msg_safe=msg.replace("[","@(").replace("]",")")
48coccilib.org.print_todo(p[0], msg_safe)
49
50@script:python depends on report@
51p << r.p;
52x << r.x;
53@@
54
55msg="WARNING: ERR_CAST can be used with %s" % (x)
56coccilib.report.print_report(p[0], msg)