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Next: [PATCH 2/10] drivers/char/ipmi: Use kstrdup
From: Julia Lawall on 14 May 2010 15:30
From: Julia Lawall <julia(a)diku.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(a)diku.dk>

---
drivers/acpi/scan.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff -u -p a/drivers/acpi/scan.c b/drivers/acpi/scan.c
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -1024,13 +1024,12 @@ static void acpi_add_id(struct acpi_devi
if (!id)
return;

- id->id = kmalloc(strlen(dev_id) + 1, GFP_KERNEL);
+ id->id = kstrdup(dev_id, GFP_KERNEL);
if (!id->id) {
kfree(id);
return;
}

- strcpy(id->id, dev_id);
list_add_tail(&id->list, &device->pnp.ids);
}

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Prev: [PATCH 00/13 v3] [GIT PULL] tracing: shrinking trace events and updates
Next: [PATCH 2/10] drivers/char/ipmi: Use kstrdup