Bash uses lseek while reading from serial device

Corinna Vinschen
Mon Aug 18 11:21:00 GMT 2014

On Aug 17 15:19, Linda Walsh wrote:
> Being a bit of a busybody...
> I forwarded this to the bash list and chet responded there...
> so forwarding it back here... not sure what isatty is supposed to do
> with a serial line, let alone one on windows...

On Linux isatty on a descriptor connected to serial line returns 0,
on Cygwin it returned 1 so far.  I fixed both problems here, isatty
on a serial line returns 0 now, and lseek on serial (and, FWIW,
sockets) don't simply return 0 anymore, but rather -1 with errno set
to ESPIPE, as on Linux.

These patches are available in the latest snapshot I just uploaded

Ross, please give it a try.


Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat
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