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33 Commits

Author SHA1 Message Date
ugen
68bf6ebd7a same 1995-02-27 19:47:53 +00:00
pst
8d4e5523d8 (a) remove the pointer to each driver's tty structure array from cdevsw 
(b) add a function callback vector to tty drivers that will return a pointer
    to a valid tty structure based upon a dev_t
(c) make syscons structures the same size whether or not APM is enabled so
    utilities don't crash if NAPM changes (and make the damn kernel compile!)
(d) rewrite /dev/snp ioctl interface so that it is device driver and i386
    independant
 1995-02-25 20:09:44 +00:00
ache
073b9f0736 Add releasing of input flow control into 
ttyflush(FREAD)
 1995-02-24 02:36:01 +00:00
ache
80d3c1dbd9 Add two IXOFF checks to not confuse with CRTS_IFLOW. 
Now TS_TBLOCK used as general input flow flag
for both IXOFF and CRTS_IFLOW cases.
 1995-02-23 03:02:38 +00:00
ache
70a7c2ca29 Revive hadrware input flow control 
Submitted by: iverson@lionheart.com
 1995-02-22 23:20:51 +00:00
ache
cfc1d31713 Restore deleted in second time my & bde fixes. 
UGEN STOP IT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 1995-02-15 22:25:51 +00:00
ugen
ac4461d616 More changes to support user calls. 
It's 22:00  here,utility still to come(hopefully tomorrow
morning..)
 1995-02-15 18:41:57 +00:00
bde
84929da814 Remove duplicated code from ttymalloc(). Disable ttyfree(). 
Restore fixes to flushing that were lost in the previous commit.

Clean up snoop changes.

Add my TODO list from 1.1.5.  The improvements in 1.1.5 should be "obtained"
first.
 1995-02-15 16:00:56 +00:00
ugen
afb537887c Here it came-the all-brand-new snoop device.. 
Users-beware..
It is tested and working for me but probably have some bugs i
didn't noticed so test it and reply...
It can:
 look at what's sent to the user from tty device
 snoop on pty's,vty's and serial tty's
It (still) can't:
 write to tty
 see what user types in local echo mode
It is probably bad styled and
 very dependant on tty_pty.c,sio.c and syscons.c
I would be really happy if another ppl would make their
changes because i am not sure this is the best snoop
we can have..but it is good..:)))))
 1995-02-14 21:21:26 +00:00
ache
a85ecfda04 Purge queues in ttylclose(), if ttywflush() failed 1995-02-13 02:18:28 +00:00
ache
ee425d9e89 Replace previous fix with less agressive, just return EIO 
if ttywait can't drain queue.
 1995-02-13 02:03:57 +00:00
ache
3f4f80d7dc 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
89daf03c98 >32 PTY support 
Submitted by: Heikki Suonsivu <hsu@cs.hut.fi>
 1995-02-09 11:13:30 +00:00
bde
8ccab87eb0 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
fc4783aaad 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
e34aaa3817 Fix error handling for new TIOCSDRAINWAIT ioctl. 1995-01-06 14:56:42 +00:00
ache
e4d42a5dab Fight against hanging modems: add timeout to ttywait. 
Reviewed by: Bruce
 1995-01-05 00:01:07 +00:00
ache
108368ba03 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
adbaad1f24 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
3ca2c6e60c 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
3e7ee1e10f 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
f63e305baf 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
612afc84b6 ttywait: check conditions again right after oproc 
Obtained from: (I know, but can't say :-)
 1994-10-15 17:59:02 +00:00
phk
c7eb90d996 Cosmetics: added ()'s and fixed prinf-formats to make gcc silent. 1994-10-08 22:33:43 +00:00
dg
b5bcd8e5e3 Use tsleep() rather than sleep so that 'ps' is more informative about 
the wait.
 1994-10-06 21:07:04 +00:00
ache
6236173ad3 Add VMIN/VTIME support 
Obtained from:  scratch :-)
 1994-10-03 01:12:18 +00:00
phk
fcf069941e 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
d424708b3f 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
07b8b5ff37 Added $Id$ 1994-08-02 07:55:43 +00:00
dg
ca83660390 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
223b429b0e 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
3bb7a7d222 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