CVS commit: src/sys/kern

[David Laight <dsl%netbsd.org@localhost>]

Module Name:    src
Committed By:   dsl
Date:           Wed Jul 23 13:10:29 UTC 2003

Modified Files:
        src/sys/kern: tty_pty.c

Log Message:
Fix (and simplify) interaction between check_pty() and pty_maxptys().
Lock setting/clearing of tp->t_oproc to guarantee concurrent opens can't
both suceed and that code in tty.c can't get a NULL t_oproc if the value
is re-read after being checked.
There are still MP issues with pt_flags, pt_send and pt_unctl.
Maybe problems that require TTY_LOCK() to be taken before calling std tty
functions.


To generate a diff of this commit:
cvs rdiff -r1.70 -r1.71 src/sys/kern/tty_pty.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.