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usr
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linux-headers-5.4.0-215-generic
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scripts
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coccinelle
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api
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Filename :
memdup.cocci
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// SPDX-License-Identifier: GPL-2.0-only /// Use kmemdup rather than duplicating its implementation /// // Confidence: High // Copyright: (C) 2010-2012 Nicolas Palix. // Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6. // Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6. // URL: http://coccinelle.lip6.fr/ // Comments: // Options: --no-includes --include-headers virtual patch virtual context virtual org virtual report @r1@ expression from,to; expression flag; position p; @@ to = \(kmalloc@p\|kzalloc@p\)(strlen(from) + 1,flag); @r2@ expression x,from,to; expression flag,E1; position p; @@ x = strlen(from) + 1; ... when != \( x = E1 \| from = E1 \) to = \(kmalloc@p\|kzalloc@p\)(x,flag); @depends on patch@ expression from,to,size,flag; position p != {r1.p,r2.p}; statement S; @@ - to = \(kmalloc@p\|kzalloc@p\)(size,flag); + to = kmemdup(from,size,flag); if (to==NULL || ...) S - memcpy(to, from, size); @r depends on !patch@ expression from,to,size,flag; position p != {r1.p,r2.p}; statement S; @@ * to = \(kmalloc@p\|kzalloc@p\)(size,flag); if (to==NULL || ...) S * memcpy(to, from, size); @script:python depends on org@ p << r.p; @@ coccilib.org.print_todo(p[0], "WARNING opportunity for kmemdup") @script:python depends on report@ p << r.p; @@ coccilib.report.print_report(p[0], "WARNING opportunity for kmemdup")