inconsistencies in the VM system that eventually lead to a panic. These
changes fix the behavior to conform to the behavior in SunOS, which is
to deny faults to pages beyond the EOF (returning SIGBUS). Internally,
this is implemented by requiring faults to be within the object size
boundaries. These changes exposed another bug, namely that passing in
an offset to mmap when trying to map an unnamed anonymous region also
results in internal inconsistencies. In this case, the offset is forced
to zero.
Reviewed by: John Dyson and others
built release after fixing all the wrong directory permissions in that release.
Then use diff -c -b to verify them against the old versions, nothing but
new directories added :-). And a lot of alphabetizing done!
serial_putchar() always hung if it was called and the serial port existed,
so booting with -h hung when the above bug was fixed. Previously, setting
-h did nothing but -h was sometimes the default due to the stack garbage
bug.
Submitted by: DI. Christian Gusenbauer <cg@scotty.edvz.uni-linz.ac.at>
The `howto' arg to boot() was not supplied, so it was stack garbage (actually
the return address in the boot program). I didn't use the submitted fix.
1) If a target initiated a sync negotiation with us and happened to chose a
value above 15, the old code inadvertantly truncated it with an "& 0x0f".
If the periferal picked something really bad like 0x32, you'd end up with
an offset of 2 which would hang the drive since it didn't expect to ever
get something so low. We now do a MIN(maxoffset, given_offset).
2) In the case of Wide cards, we were turning on sync transfers after a
sucessfull wide negotiation. Now we leave the offset alone in the per
target scratch space (which implies asyncronous transfers since we initialize
it that way) until a syncronous negotation occurs.
3) We were advertizing a max offset of 15 instead of 8 for wide devices.
4) If the upper level SCSI code sent down a "SCSI_RESET", it would hang the
system because we would end up sending a null command to the sequencer. Now
we handle SCSI_RESET correctly by having the sequencer interrupt us when it
is about to fill the message buffer so that we can fill it in ourselves.
The sequencer will also "simulate" a command complete for these "message only"
SCBs so that the kernel driver can finish up properly. The cdplay utility
will send a "SCSI_REST" to the cdplayer if you use the reset command.
5) The code that handles SCSIINTs was broken in that if more than one type
of error was true at once, we'd do outbs without the card being paused.
The else clause after the busfree case was also an accident waiting to
happen. I've now turned this into an if, else if, else type of thing, since
in most cases when we handle one type of error, it should be okay to ignore
the rest (ie if we have a SELTO, who cares if there was a parity error on
the transaction?), but the section should really be rewritten after 2.0.5.
This fix was the least obtrusive way to patch the problem.
6) Only tag either SDTR or WDTR negotiation on an SCB. The real problem is
that I don't account for the case when an SCB that is tagged to do a particular
type of negotiation completes or SELTOs (selection timeout) without the
negotiation taking place, so the accounting of sdtrpending and wdtrpending
gets screwed up. In the wide case, if we tag it to do both wdtr and sdtr,
it only performs wdtr (since wdtr must occur first and we spread out the
negotiation over two commands) so we always have sdtrpending set for that
target and we never do a real SDTR. I fill properly fix the accounting
after 2.0.5 goes out the door, but this works (as confirmed by Dan) on
wide targets.
Other stuff that is also included:
1) Don't do a bzero when recycling SCBs. The only thing that must explicitly
be set to zero is the scb control byte which is done in ahc_get_scb. We also
need to set the SG_list_pointer and SG_list_count to 0 for commands that do
not transfer data.
2) Mask the interrupt type printout for the aic7870 case. The bit we were
using to determine interrupt type is only valid for the aic7770.
Submitted by: Justin Gibbs
Add comment that you should not have to edit netstart, and if you
do we would like to know about it.
The lo0 interface is now handled just like any other interface,
This makes it possible to do things to it from sysconfig.
Redo the comments in sysconfig about network_interfaces and ifconfig_${X}
to reflect the moving of lo0 to this scheme. We now have an uncommented
variable for sysintall to find and play with. (Your welcome Jordan)
Redo the way static routes are handled. Basically use the same
scheme for routes that I did for network interfaces. This allows
any number of static routes to be added from sysconfig.
Make sure we do the default route first so we stand a chance of
getting to our DNS server (if we have one) to resolve our own
IP address from $hostname.
It remains to be seen how successfully. The distribution loading code
is still not here yet, but the partition/newfs/mount/cpio-extract cycle
is as complete as it's ever going to get, modulo possible bug fixes.
The TCP/IP setup screen is also sort of here, albeit in a highly-changing
state due to the fact that per-interface information isn't being kept
right now but is being added (thanks, Gary!).
one of the key components of the system, but I'm sure that this:
===
- ${ECHO_MSG} "===> Registering installation for ${PKGNAME}"; \
+ ${ECHO_MSG} "===> Registering installation for ${PKGNAME}"; \
===
change has absolutely no chance to screw us up, right? :)
full directory hierarchy, as is the format of the new ports collection.
It used the old "all packages in one directory" paradigm, which is wrong for
ports now.
Submitted by: Marc van Kempen <wmbfmk@urc.tue.nl>
IGMPv2 spec. This fixes the following bugs:
o ntohs() on a char provides silly results
o timer needs to be scaled to units of PR_FASTHZ; this was being done
inconsistenly so now it gets done when it is initialized.
Reviewed by: Garrett Wollman
Submitted by: Bill Fenner <fenner@parc.xerox.com>
the fixes!):
o Scoped addresses might let traffic in
o IGMP queries sent with wrong timeouts
o Possible core dump in mtrace if we get a request for which we have no route
o If a member on a transit network left a group, mrouted would stop forwarding
even if there was a downstream router
o Various code cleanups and logging changes
Reviewed by: wollman
Submitted by: Bill Fenner <fenner@parc.xerox.com>
have non-critical nfs volumes in /etc/fstab they should have option bg
on them. The behavior of the system is more tuneable this way, and
allows a slow mounting /usr over nfs to work.
Submitted by: bde
