Re: [PATCH v2 1/9] rpc: virnetserverclient: Identify clients by an integer ID

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On 02.05.2016 16:19, Erik Skultety wrote:
>>> diff --git a/src/rpc/virnetserver.c b/src/rpc/virnetserver.c
>>> index 57bd95c..8216da6 100644
>>> --- a/src/rpc/virnetserver.c
>>> +++ b/src/rpc/virnetserver.c
>>> @@ -65,6 +65,7 @@ struct _virNetServer {
>>>  
>>>      size_t nclients;                    /* Current clients count */
>>>      virNetServerClientPtr *clients;     /* Clients */
>>> +    unsigned long long next_client_id;  /* next client ID */
>>
>> Any reason this shouldn't be size_t just like the rest below?
>>
>>>      size_t nclients_max;                /* Max allowed clients count */
>>>      size_t nclients_unauth;             /* Unauthenticated clients count */
>>>      size_t nclients_unauth_max;         /* Max allowed unauth clients count */
>>
> 
> Well, it can't...according POSIX, size_t isn't guaranteed to be always
> at least 64-bits, it just has to represent the largest unsigned type
> supported by an implementation and also according to
> asm-generic/posix_types.h most 32-bit archs use unsigned int for
> size_t...which isn't what we actually want, since clients come and go
> and we just increment the counter till the daemon's end of life and imho
> we do want the largest type possible here....the same applies below...

Interesting. I thought that size_t is always the biggest possible type
(not by definition, but by actual code). In that case, we should stick
with unsigned long long.

ACK to your version.

Michal

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