| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 1 | /// Use kmemdup 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 | @r1@ |
| 17 | expression from,to; |
| 18 | expression flag; |
| 19 | position p; |
| 20 | @@ |
| 21 | |
| 22 | to = \(kmalloc@p\|kzalloc@p\)(strlen(from) + 1,flag); |
| 23 | |
| 24 | @r2@ |
| 25 | expression x,from,to; |
| 26 | expression flag,E1; |
| 27 | position p; |
| 28 | @@ |
| 29 | |
| 30 | x = strlen(from) + 1; |
| 31 | ... when != \( x = E1 \| from = E1 \) |
| 32 | to = \(kmalloc@p\|kzalloc@p\)(x,flag); |
| 33 | |
| 34 | @depends on patch@ |
| 35 | expression from,to,size,flag; |
| 36 | position p != {r1.p,r2.p}; |
| 37 | statement S; |
| 38 | @@ |
| 39 | |
| 40 | - to = \(kmalloc@p\|kzalloc@p\)(size,flag); |
| 41 | + to = kmemdup(from,size,flag); |
| 42 | if (to==NULL || ...) S |
| 43 | - memcpy(to, from, size); |
| 44 | |
| 45 | @r depends on !patch@ |
| 46 | expression from,to,size,flag; |
| 47 | position p != {r1.p,r2.p}; |
| 48 | statement S; |
| 49 | @@ |
| 50 | |
| 51 | * to = \(kmalloc@p\|kzalloc@p\)(size,flag); |
| 52 | if (to==NULL || ...) S |
| 53 | * memcpy(to, from, size); |
| 54 | |
| 55 | @script:python depends on org@ |
| 56 | p << r.p; |
| 57 | @@ |
| 58 | |
| 59 | coccilib.org.print_todo(p[0], "WARNING opportunity for kmemdup") |
| 60 | |
| 61 | @script:python depends on report@ |
| 62 | p << r.p; |
| 63 | @@ |
| 64 | |
| 65 | coccilib.report.print_report(p[0], "WARNING opportunity for kmemdup") |