diff options
Diffstat (limited to 'scripts/coccinelle/api/kstrdup.cocci')
| -rw-r--r-- | scripts/coccinelle/api/kstrdup.cocci | 75 |
1 files changed, 70 insertions, 5 deletions
diff --git a/scripts/coccinelle/api/kstrdup.cocci b/scripts/coccinelle/api/kstrdup.cocci index e0805ad08d3..07a74b2c619 100644 --- a/scripts/coccinelle/api/kstrdup.cocci +++ b/scripts/coccinelle/api/kstrdup.cocci @@ -1,16 +1,19 @@ /// Use kstrdup rather than duplicating its implementation /// // Confidence: High -// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2. -// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2. -// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2. +// Copyright: (C) 2010-2012 Nicolas Palix. GPLv2. +// Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6. GPLv2. +// Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6. GPLv2. // URL: http://coccinelle.lip6.fr/ // Comments: // Options: -no_includes -include_headers virtual patch +virtual context +virtual org +virtual report -@@ +@depends on patch@ expression from,to; expression flag,E1,E2; statement S; @@ -23,7 +26,7 @@ statement S; ... when != \(from = E2 \| to = E2 \) - strcpy(to, from); -@@ +@depends on patch@ expression x,from,to; expression flag,E1,E2,E3; statement S; @@ -37,3 +40,65 @@ statement S; if (to==NULL || ...) S ... when != \(x = E3 \| from = E3 \| to = E3 \) - memcpy(to, from, x); + +// --------------------------------------------------------------------- + +@r1 depends on !patch exists@ +expression from,to; +expression flag,E1,E2; +statement S; +position p1,p2; +@@ + +* to = kmalloc@p1(strlen(from) + 1,flag); + ... when != \(from = E1 \| to = E1 \) + if (to==NULL || ...) S + ... when != \(from = E2 \| to = E2 \) +* strcpy@p2(to, from); + +@r2 depends on !patch exists@ +expression x,from,to; +expression flag,E1,E2,E3; +statement S; +position p1,p2; +@@ + +* x = strlen(from) + 1; + ... when != \( x = E1 \| from = E1 \) +* to = \(kmalloc@p1\|kzalloc@p2\)(x,flag); + ... when != \(x = E2 \| from = E2 \| to = E2 \) + if (to==NULL || ...) S + ... when != \(x = E3 \| from = E3 \| to = E3 \) +* memcpy@p2(to, from, x); + +@script:python depends on org@ +p1 << r1.p1; +p2 << r1.p2; +@@ + +cocci.print_main("WARNING opportunity for kstrdep",p1) +cocci.print_secs("strcpy",p2) + +@script:python depends on org@ +p1 << r2.p1; +p2 << r2.p2; +@@ + +cocci.print_main("WARNING opportunity for kstrdep",p1) +cocci.print_secs("memcpy",p2) + +@script:python depends on report@ +p1 << r1.p1; +p2 << r1.p2; +@@ + +msg = "WARNING opportunity for kstrdep (strcpy on line %s)" % (p2[0].line) +coccilib.report.print_report(p1[0], msg) + +@script:python depends on report@ +p1 << r2.p1; +p2 << r2.p2; +@@ + +msg = "WARNING opportunity for kstrdep (memcpy on line %s)" % (p2[0].line) +coccilib.report.print_report(p1[0], msg) |