| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 1 | /// Use kstrdup rather than duplicating its implementation |
| 2 | /// |
| 3 | // Confidence: High |
| 4 | // Copyright: (C) 2010-2012 Nicolas Palix. GPLv2. |
| 5 | // Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6. GPLv2. |
| 6 | // Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6. GPLv2. |
| 7 | // URL: http://coccinelle.lip6.fr/ |
| 8 | // Comments: |
| 9 | // Options: --no-includes --include-headers |
| 10 | |
| 11 | virtual patch |
| 12 | virtual context |
| 13 | virtual org |
| 14 | virtual report |
| 15 | |
| 16 | @depends on patch@ |
| 17 | expression from,to; |
| 18 | expression flag,E1,E2; |
| 19 | statement S; |
| 20 | @@ |
| 21 | |
| 22 | - to = kmalloc(strlen(from) + 1,flag); |
| 23 | + to = kstrdup(from, flag); |
| 24 | ... when != \(from = E1 \| to = E1 \) |
| 25 | if (to==NULL || ...) S |
| 26 | ... when != \(from = E2 \| to = E2 \) |
| 27 | - strcpy(to, from); |
| 28 | |
| 29 | @depends on patch@ |
| 30 | expression x,from,to; |
| 31 | expression flag,E1,E2,E3; |
| 32 | statement S; |
| 33 | @@ |
| 34 | |
| 35 | - x = strlen(from) + 1; |
| 36 | ... when != \( x = E1 \| from = E1 \) |
| 37 | - to = \(kmalloc\|kzalloc\)(x,flag); |
| 38 | + to = kstrdup(from, flag); |
| 39 | ... when != \(x = E2 \| from = E2 \| to = E2 \) |
| 40 | if (to==NULL || ...) S |
| 41 | ... when != \(x = E3 \| from = E3 \| to = E3 \) |
| 42 | - memcpy(to, from, x); |
| 43 | |
| 44 | // --------------------------------------------------------------------- |
| 45 | |
| 46 | @r1 depends on !patch exists@ |
| 47 | expression from,to; |
| 48 | expression flag,E1,E2; |
| 49 | statement S; |
| 50 | position p1,p2; |
| 51 | @@ |
| 52 | |
| 53 | * to = kmalloc@p1(strlen(from) + 1,flag); |
| 54 | ... when != \(from = E1 \| to = E1 \) |
| 55 | if (to==NULL || ...) S |
| 56 | ... when != \(from = E2 \| to = E2 \) |
| 57 | * strcpy@p2(to, from); |
| 58 | |
| 59 | @r2 depends on !patch exists@ |
| 60 | expression x,from,to; |
| 61 | expression flag,E1,E2,E3; |
| 62 | statement S; |
| 63 | position p1,p2; |
| 64 | @@ |
| 65 | |
| 66 | * x = strlen(from) + 1; |
| 67 | ... when != \( x = E1 \| from = E1 \) |
| 68 | * to = \(kmalloc@p1\|kzalloc@p2\)(x,flag); |
| 69 | ... when != \(x = E2 \| from = E2 \| to = E2 \) |
| 70 | if (to==NULL || ...) S |
| 71 | ... when != \(x = E3 \| from = E3 \| to = E3 \) |
| 72 | * memcpy@p2(to, from, x); |
| 73 | |
| 74 | @script:python depends on org@ |
| 75 | p1 << r1.p1; |
| 76 | p2 << r1.p2; |
| 77 | @@ |
| 78 | |
| 79 | cocci.print_main("WARNING opportunity for kstrdep",p1) |
| 80 | cocci.print_secs("strcpy",p2) |
| 81 | |
| 82 | @script:python depends on org@ |
| 83 | p1 << r2.p1; |
| 84 | p2 << r2.p2; |
| 85 | @@ |
| 86 | |
| 87 | cocci.print_main("WARNING opportunity for kstrdep",p1) |
| 88 | cocci.print_secs("memcpy",p2) |
| 89 | |
| 90 | @script:python depends on report@ |
| 91 | p1 << r1.p1; |
| 92 | p2 << r1.p2; |
| 93 | @@ |
| 94 | |
| 95 | msg = "WARNING opportunity for kstrdep (strcpy on line %s)" % (p2[0].line) |
| 96 | coccilib.report.print_report(p1[0], msg) |
| 97 | |
| 98 | @script:python depends on report@ |
| 99 | p1 << r2.p1; |
| 100 | p2 << r2.p2; |
| 101 | @@ |
| 102 | |
| 103 | msg = "WARNING opportunity for kstrdep (memcpy on line %s)" % (p2[0].line) |
| 104 | coccilib.report.print_report(p1[0], msg) |