svn commit: r309121 - head/usr.sbin/bhyve

Jakub Klama jakub at ixsystems.com
Wed Nov 30 05:39:58 UTC 2016


> Wiadomość napisana przez Ian Lepore <ian at FreeBSD.org> w dniu 24.11.2016, o godz. 23:23:
> 
> On Thu, 2016-11-24 at 22:16 +0000, Jakub Wojciech Klama wrote:
>> Author: jceel
>> Date: Thu Nov 24 22:16:18 2016
>> New Revision: 309121
>> URL: https://svnweb.freebsd.org/changeset/base/309121
>> 
>> Log:
>>  virtio_console: handle short writes to an Unix domain socket
>> gracefully.
>> 
>>  writev() can do a short write.  Retrying it results in a very
>> convoluted
>>  and complex code, so we iterate over iovec and do regular
>> stream_write()
>>  instead.
>> 
> 
> Doesn't pwritev(2) simplify iterating to handle short writes?
> 

Correct me if I'm wrong, but pwritev(2) is a writev(2) with offset. We're writing to an Unix domain socket here, which is not seekable.

Thanks,
Jakub



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