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1ebc44d8a6
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22 Commits

Author SHA1 Message Date
ache
1ebc44d8a6 1. If some output still present at the end of ttywait, kill it. 
2. Even if ttywait() fails, call ttyflush(FREAD) in ttywflush.
This two fixes guarantee that queues are empty after calling ttywflush()
in any case
 1995-02-12 23:01:13 +00:00
jkh
bf79ed40a3 >32 PTY support 
Submitted by: Heikki Suonsivu <hsu@cs.hut.fi>
 1995-02-09 11:13:30 +00:00
bde
f568e81eb8 Disable bogus attempt to switch from the TS_ISOPEN state to the 
TS_WOPEN state when CLOCAL is toggled from on to off while there
is no carrier.  There is no way back, and with sio there is no way
forward either (TS_ISOPEN will never be set again for the current
open).  This bug was observed in 1.1 and was fixed in 1.1.5.
 1995-02-08 22:02:02 +00:00
bde
6d392fd2e2 Increase the reserved clist space for the raw queue from 512 to TTYHOG. 
This might help avoid tty buffer overflows on loaded systems.
 1995-01-30 06:16:59 +00:00
bde
4d6f949376 Fix error handling for new TIOCSDRAINWAIT ioctl. 1995-01-06 14:56:42 +00:00
ache
7f9dfa2a43 Fight against hanging modems: add timeout to ttywait. 
Reviewed by: Bruce
 1995-01-05 00:01:07 +00:00
ache
653660fd3e Call d_stop in ttyflush not only for WRITE but for READ too 
Obtained from: 1.1.5.1
 1994-12-04 01:01:45 +00:00
bde
33d82aa474 Fix cblock starvation bugs by reserving enough cblocks for minimal 
operation of each clist.  Limit the growth of each clist.  Clists
can only grow larger than the reserved minimum if there are free
cblocks in a shared pool.  The size of this pool is now fixed
(this could be improved).  The reserved and maximum sizes are more
carefully allocated for slip and ppp, depending on the mtu.  A maximum
MTU of 16384 is now enforced for ppp.
 1994-11-26 19:24:13 +00:00
bde
c879ab57fd Don't block for output in non-blocking mode if clists run out. 
Remove an unnecessary test (if the output queue is above high water
then it is nonempty).
 1994-11-26 18:54:25 +00:00
bde
dcf7506baa Return immediately from ttwrite() if the ttysleep()s that wait for 
a clist return with an error.  There are some clist starvation/deadlock
bugs elsewhere and killing clist hogs didn't help because the breaks
only exited from the inner loops.
 1994-11-01 22:23:29 +00:00
dg
052101cf25 Round down instead of up in 'kerninfo'/ctrl-T stats code. Incorrect output 
can result otherwise.

Submitted by:	John Dyson
 1994-10-23 06:18:13 +00:00
ache
32696c9c2e ttywait: check conditions again right after oproc 
Obtained from: (I know, but can't say :-)
 1994-10-15 17:59:02 +00:00
phk
5f8e9e2c4d Cosmetics: added ()'s and fixed prinf-formats to make gcc silent. 1994-10-08 22:33:43 +00:00
dg
2add6128e2 Use tsleep() rather than sleep so that 'ps' is more informative about 
the wait.
 1994-10-06 21:07:04 +00:00
ache
58a698518c Add VMIN/VTIME support 
Obtained from:  scratch :-)
 1994-10-03 01:12:18 +00:00
phk
c3e4945541 All of this is cosmetic. prototypes, #includes, printfs and so on. Makes 
GCC a lot more silent.
 1994-10-02 17:35:40 +00:00
dg
bf2d1675b9 Added support for TIOCSTAT ioctl. This allows shells that use raw/cbreak 
tty modes to process a control-T and do the right thing.
 1994-08-18 09:16:37 +00:00
dg
8d205697aa Added $Id$ 1994-08-02 07:55:43 +00:00
dg
4470f3d596 Allow for output processing routine to handle entire character buffer 
and thus not require a sleep/wakeup.
Reviewed by:
Submitted by:
 1994-08-01 10:42:26 +00:00
dg
f9a6051213 Added code to allocate and deallocate a number of cblocks on open/close of 
a tty.
Note that this might  conflict with the collateral use of TS_WOPEN, but
for the moment I can find no problems associated with this. (TS_WOPEN
will likely go away in the future anyway). This should be looked at
again in the future (the potential problem is that the cblock pool
may either run out or accumulate too many cblocks).
 1994-07-06 06:42:34 +00:00
rgrimes
2469c867a1 The big 4.4BSD Lite to FreeBSD 2.0.0 (Development) patch. 
Reviewed by:	Rodney W. Grimes
Submitted by:	John Dyson and David Greenman
 1994-05-25 09:21:21 +00:00
rgrimes
8fb65ce818 BSD 4.4 Lite Kernel Sources 1994-05-24 10:09:53 +00:00