Review Request: Fix hang in kcm_useraccount

[Michael Palimaka]

On 2012-08-11 01:02, Rolf Eike Beer wrote:
> Am Samstag 11 August 2012, 00:11:37 schrieb Michael Palimaka:
>> So you are saying:
>>
>> - readAll clears the buffer
>> - readLine unconditionally calls readAll
>> - readLine may be called multiple times to read multiple lines
>>
>> Is that correct?
>
> That's how the code looks to me.

That set of statements is contradictory - how can the buffer be cleared, 
but then read from again?

>
>> (Again, I note that in testing, calling readAll then readLine is
>> successful.)
>
> I.e. readLine() then returns something? Are you sure this has been written by
> the process before readAll() was called? Strange.
Yes - the chfn implementation I am using writes "permission denied" and 
immediately terminates. With the latest diff, readAll.isEmpty is false 
so readLine is then executed.

Best regards,
Michael