Re: EINTR

[Bastien ROUCARIES]

On Tue, Jul 5, 2011 at 10:17 AM, Paolo Bonzini <address@hidden> wrote:
> On 07/03/2011 06:28 PM, Bastien ROUCARIES wrote:
>> On Sun, Jul 3, 2011 at 5:36 PM, Bruno Haible<address@hidden>  wrote:
>>> Hi all,
>>>
>>> I wrote:
>>>> ... in programs that don't install signal handlers, EINTR ... also occurs 
>>>> in
>>>> MacOS X!
>>>
>>> It is worse than that:
>>>
>>> 1) Even on Linux, even when the signal handlers have the SA_RESTART flag 
>>> set,
>>>    some system call (like msgrcv(), but not read()) can fail with EINTR.
>>>    See [1].
>>
>> Report to vger al viro and alan cox have fixed problem like this
>> sometime ago. It is considered backported to stable
>
> Not if it is documented I guess:
>
>         msgrcv()  is  never  automatically
>         restarted  after being interrupted by a signal handler, regardless of
>         the setting of the SA_RESTART flag when establishing  a  signal  han‐
>         dler.

They tend to fix these nowaday posix disagree here. ABI will be good
it only matter to add a new flag in order to get strict posix

Bastien
>
> Paolo
>