On Wed, Sep 03, 2014 at 09:10:41PM -0300, Lucas Tanure wrote:
> (Forget the last e-mail, please, stupid Gmail)
>
> Hi,
>
> I'm looking for some information about :
>
> struct kobj_attribute {
> struct attribute attr;
> ssize_t (*show)(struct kobject *kobj, struct kobj_attribute
> *attr, char *buf);
> ssize_t (*store)(struct kobject *kobj, struct kobj_attribute
> *attr, const char *buf, size_t count);
> };
>
>
> My function to handle the operation:
>
> static ssize_t my_store(struct kobject *kobj, struct kobj_attribute *attr,
> const char *buf, size_t count) {
> char *buffer;
>
> buffer = (char*) kcalloc(count, sizeof(char), GFP_KERNEL);
>
> copy_from_user(buffer, buf, count);
> .....
> .....
> etc....
> }
>
> So, this *const char *buf, *where ti come from ? Kernel space?
I'm guessing you didn't read the kobject documentation that is in the
kernel tree?
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