On 070621 18:34, Akinobu Mita <[email protected]> wrote:
> 2007/6/22, Alexander Wuerstlein <[email protected]>:
>
>> +asmlinkage int sys_sns_is_trusted(pid_t p)
>> +{
>> + struct task_struct *t;
>> + rcu_read_lock();
>> + t = find_task_by_pid(p);
>> + if (IS_ERR(t)) {
>
> Shouldn't it be:
> if (!t) {
> ...
> ?
>
> find_task_by_pid() returns NULL on failure.
You seem to be right, the rest of the kernel just does 'if (!t)'. We just used
IS_ERR() as the 'check for evil pointers' function.
Ciao,
Alexander Wuerstlein.
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