Greg, I'm still trying to understand the sysfs. I indeed read the documentation, I was using your "Sample kobject implementation" as base of my code. But as 4h of work there some points that I didn't understand yet.
Thanks -- Lucas Tanure +55 (19) 988176559 On Wed, Sep 3, 2014 at 9:23 PM, Greg KH <[email protected]> wrote: > 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? >
_______________________________________________ Kernelnewbies mailing list [email protected] http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
