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Driver core: change add_uevent_var to use a struct

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This changes the uevent buffer functions to use a struct instead of a
long list of parameters. It does no longer require the caller to do the
proper buffer termination and size accounting, which is currently wrong
in some places. It fixes a known bug where parts of the uevent
environment are overwritten because of wrong index calculations.

Many thanks to Mathieu Desnoyers for finding bugs and improving the
error handling.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Kay Sievers
2007-08-14 15:15:12 +02:00
committed by Greg Kroah-Hartman
parent 8380770c84
commit 7eff2e7a8b
47 changed files with 300 additions and 636 deletions
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9
drivers/infiniband/core/sysfs.c
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@@ -434,21 +434,18 @@ static void ib_device_release(struct class_device *cdev)
kfree(dev);
}
static int ib_device_uevent(struct class_device *cdev, char **envp,
int num_envp, char *buf, int size)
static int ib_device_uevent(struct class_device *cdev,
struct kobj_uevent_env *env)
{
struct ib_device *dev = container_of(cdev, struct ib_device, class_dev);
int i = 0, len = 0;
if (add_uevent_var(envp, num_envp, &i, buf, size, &len,
"NAME=%s", dev->name))
if (add_uevent_var(env, "NAME=%s", dev->name))
return -ENOMEM;
/*
* It would be nice to pass the node GUID with the event...
*/
envp[i] = NULL;
return 0;
}