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From: Bruce Evans <bde@FreeBSD.ORG>
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Date: Sun, 22 Nov 1998 01:04:10 -0800 (PST)
Message-Id: <199811220904.BAA09229@freefall.freebsd.org>
To: cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG
Subject: cvs commit: src/sys/kern tty.c
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bde         1998/11/22 01:04:10 PST

  Modified files:
    sys/kern             tty.c 
  Log:
  Fixed some missing cases in the check for ioctls that involve modification.
  Many (mostly machine-dependent ones) are still missing.  NIST-PCTS found
  this bug for all the ioctls used to implement the POSIX tc* functions
  (TIOCCBRK, TIOCDRAIN, TIOCSPGRP, TIOCSBRK, TIOCSTART and TIOCSTOP), and
  I found FIOASYNC, TIOCCONS, TIOCEXCL, TIOCHPCL, TIOCNXCL, TIOCSCTTY and
  TIOCSDRAINWAIT by inspection.  TIOCSPGRP was ifdefed out for some reason.
  
  Handle tcsetattr()'s historical speed conversions correctly and more
  centrally:
  - don't store speeds of 0 in the final termios struct.  Drivers can now
    depend on tp->t_ispeed and tp->t_ospeed giving the actual speed.
    Applications can now depend on tcgetattr() being POSIX.1 conformant.
  - convert from a proposed input speed of 0 to the proposed output speed
    (except if that is 0, convert to the current output speed).  Drivers
    can now depend on the proposed input speed being nonzero.
  - don't reject negative speeds.  Negative speeds can't happen now that
    speed_t is unsigned, and rejecting invalid speeds is a bug - tcsetattr()
    is supposed to succeed if it can "perform any of the requested actions",
    so it shouldn't fail in practice.
  
  Revision  Changes    Path
  1.108     +25 -8     src/sys/kern/tty.c

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