linux-kernel - [PATCH 2/10] drivers/char/ipmi: Use kstrdup

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Message-ID: <Pine.LNX.4.64.1005142128140.28935@ask.diku.dk>
Date:	Fri, 14 May 2010 21:28:37 +0200 (CEST)
From:	Julia Lawall <julia@...u.dk>
To:	Corey Minyard <minyard@....org>,
	openipmi-developer@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH 2/10] drivers/char/ipmi: Use kstrdup

From: Julia Lawall <julia@...u.dk>

Use kstrdup when the goal of an allocation is copy a string into the
allocated region.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression from,to;
expression flag,E1,E2;
statement S;
@@

-  to = kmalloc(strlen(from) + 1,flag);
+  to = kstrdup(from, flag);
   ... when != \(from = E1 \| to = E1 \)
   if (to==NULL || ...) S
   ... when != \(from = E2 \| to = E2 \)
-  strcpy(to, from);
// </smpl>

Signed-off-by: Julia Lawall <julia@...u.dk>

---
 drivers/char/ipmi/ipmi_msghandler.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff -u -p a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -1976,12 +1976,11 @@ int ipmi_smi_add_proc_entry(ipmi_smi_t s
 	entry = kmalloc(sizeof(*entry), GFP_KERNEL);
 	if (!entry)
 		return -ENOMEM;
-	entry->name = kmalloc(strlen(name)+1, GFP_KERNEL);
+	entry->name = kstrdup(name, GFP_KERNEL);
 	if (!entry->name) {
 		kfree(entry);
 		return -ENOMEM;
 	}
-	strcpy(entry->name, name);
 
 	file = create_proc_entry(name, 0, smi->proc_dir);
 	if (!file) {
--
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