[lkml]   [2007]   [Aug]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: Finding out socket/pipe connectivity status
> 	write(stdout, request);
> /* reference point [A] */
> read(stdin, response);
> So my idea had been to launch another thread that monitors stdin for
> 'breakage' and unmount the fs before a user can start an operation on
> myfs. So I've been trying to complete the idea to code. You say a
> broken socket raises the read flag, so:

Your connection can break at any point even mid-write so you must handle
it. You have no real choice.

You can try and spot it earlier by using select/poll and checking for
error. In which case I'd use poll() as it is a bit more clear about what
event you get

Then poll stdin and stdout. The kernel will give you back

POLLERR - an error condition
POLLHUP - a hangup

if at the point you poll an error has already occurred. You can do this
with select and the socket error and related stuff buts its uglier


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2007-08-12 20:37    [W:0.029 / U:5.736 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site