On 09/25/2013 12:21 PM, Oleg Nesterov wrote:
Peter, thanks for your explanations about tty_old_pgrp/etc,
I'll try to reply later. I need to read your email carefully.
Ok.
If you're interested, I highly recommend reading Chapter 34
("Process Groups, Sessions, and Job Control") of Michael Kerrisk's
book, The Linux Programming Interface.
FYI, LSB tests report another failure starting from 3.10.
See lsb-test-core/lts_vsx-pcts/tset/POSIX.os/devclass/tcflush/tcflush.c
attached below. test4() fails with
SIGTTOU not received
tcflush(TCIOFLUSH) action was performed
when TOSTOP was set
I'll try to investigate, but let me repeat I know absolutely nothing
about drivers/tty/, termios, etc. Perhaps you can take a look? So far I
didn't even look into the attached code, I have no idea what it does.
Thanks for the report. I looked into this and found another regression.
Patch coming.
Looks like I'll be integrating LSB into my testbench.
Regards,
Peter Hurley
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