1/// Make sure calls to d_find_alias() have a corresponding call to dput().
 2//
 3// Keywords: d_find_alias, dput
 4//
 5// Confidence: Moderate
 6// URL: http://coccinelle.lip6.fr/
 7// Options: --include-headers
 8
 9virtual context
10virtual org
11virtual patch
12virtual report
13
14@r exists@
15local idexpression struct dentry *dent;
16expression E, E1;
17statement S1, S2;
18position p1, p2;
19@@
20(
21	if (!(dent@p1 = d_find_alias(...))) S1
22|
23	dent@p1 = d_find_alias(...)
24)
25
26<...when != dput(dent)
27    when != if (...) { <+... dput(dent) ...+> }
28    when != true !dent || ...
29    when != dent = E
30    when != E = dent
31if (!dent || ...) S2
32...>
33(
34	return <+...dent...+>;
35|
36	return @p2 ...;
37|
38	dent@p2 = E1;
39|
40	E1 = dent;
41)
42
43@depends on context@
44local idexpression struct dentry *r.dent;
45position r.p1,r.p2;
46@@
47* dent@p1 = ...
48  ...
49(
50* return@p2 ...;
51|
52* dent@p2
53)
54
55
56@script:python depends on org@
57p1 << r.p1;
58p2 << r.p2;
59@@
60cocci.print_main("Missing call to dput()",p1)
61cocci.print_secs("",p2)
62
63@depends on patch@
64local idexpression struct dentry *r.dent;
65position r.p2;
66@@
67(
68+ dput(dent);
69  return @p2 ...;
70|
71+ dput(dent);
72  dent@p2 = ...;
73)
74
75@script:python depends on report@
76p1 << r.p1;
77p2 << r.p2;
78@@
79msg = "Missing call to dput() at line %s."
80coccilib.report.print_report(p1[0], msg % (p2[0].line))