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Add to TODO list and move it to near the top of the file.

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This commit is contained in:
Bruce Evans 1995-07-21 14:15:09 +00:00
parent a2a072b542
commit 2ef5801909
1 changed files with 29 additions and 18 deletions
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47
sys/kern/tty.c
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@ -36,7 +36,35 @@
* SUCH DAMAGE.
*
* @(#)tty.c 8.8 (Berkeley) 1/21/94
* $Id: tty.c,v 1.48 1995/06/24 16:28:20 ache Exp $
* $Id: tty.c,v 1.49 1995/07/21 13:56:29 bde Exp $
*/
/*-
* TODO:
* o Fix races for sending the start char in ttyflush().
* o Handle inter-byte timeout for "MIN > 0, TIME > 0" in ttyselect().
* With luck, there will be MIN chars before select() returns().
* o Handle CLOCAL consistently for ptys. Perhaps disallow setting it.
* o Don't allow input in TS_ZOMBIE case. It would be visible through
* FIONREAD.
* o Do the new sio locking stuff here and use it to avoid special
* case for EXTPROC?
* o Lock PENDIN too?
* o Move EXTPROC and/or PENDIN to t_state?
* o Wrap most of ttioctl in spltty/splx.
* o Implement TIOCNOTTY or remove it from <sys/ioctl.h>.
* o Send STOP if IXOFF is toggled off while TS_TBLOCK is set.
* o Don't allow certain termios flags to affect disciplines other
* than TTYDISC. Cancel their effects before switch disciplines
* and ignore them if they are set while we are in another
* discipline.
* o Handle c_ispeed = 0 to c_ispeed = c_ospeed conversion here instead
* of in drivers and fix drivers that write to tp->t_termios.
* o Check for TS_CARR_ON being set while everything is closed and not
* waiting for carrier. TS_CARR_ON isn't cleared if nothing is open,
* so it would live until the next open even if carrier drops.
* o Restore TS_WOPEN since it is useful in pstat. It must be cleared
* only when _all_ openers leave open().
*/
#include "snp.h"
@ -230,23 +258,6 @@ ttyclose(tp)
((c) == '\n' || (((c) == cc[VEOF] || \
(c) == cc[VEOL] || (c) == cc[VEOL2]) && (c) != _POSIX_VDISABLE))
/*-
* TODO:
* o Fix races for sending the start char in ttyflush().
* o Handle inter-byte timeout for "MIN > 0, TIME > 0" in ttyselect().
* With luck, there will be MIN chars before select() returns().
* o Handle CLOCAL consistently for ptys. Perhaps disallow setting it.
* o Don't allow input in TS_ZOMBIE case. It would be visible through
* FIONREAD.
* o Do the new sio locking stuff here and use it to avoid special
* case for EXTPROC?
* o Lock PENDIN too?
* o Move EXTPROC and/or PENDIN to t_state?
* o Wrap most of ttioctl in spltty/splx.
* o Implement TIOCNOTTY or remove it from <sys/ioctl.h>.
*/
/*
* Process input of a single character received on a tty.
*/