Opening a /srv file sets the close-on-exec flag on the
shared channel breaking the exportfs openmount() hack.
The devsrv tries to prevent posting a channel with the
close-on-exec or remove-on-close flags. but nothing
currently prevents this poisoning on open.
Until this gets fixed in eigther exportfs or devsrv,
i'll back out the changes that could have potential side
effects like this.
On AMD64, CR0/CR4 are 64-bit registers, with
the upper half reserved. So use uintptr type
to store the register values to get 32 bit on 386
and 64 bit on AMD64.
The -v flag now does not create a new rio window,
while -w flag does (restores the old behaviour).
This allows vmx to run under vncs and is in general
mode aligned to other emulators and programs.
Removes the 128 kB limit for files making up the database.
We used to skip over and complain about files that exceeded
the limit, forcing the user to generate hash files.
This caused things to inexplicably stop working after a file
hit the hidden limit, which is unreasonable behaviour considering
that libndb happily, albeit slowly, works with bigger files.
The previous resize optimization now means that the wfill()
is skipped on resize for libdraw programs.
So do it once /dev/mouse is closed and the window processes
the Refresh message.
"" looks for patterns in the form 'prompt;' or 'prompt%',
and gets confused when proof emits 'illegal;'. This change
replaces the ';' with a ':', which both matches other
conventional error outputs and prevents "" from getting
confused.
Initially the code tried to guess the date format. This
turned out to be a bit too magical, so the feature was
removed, but the manpage still documented the nonfeature.
As long as the client as the mouse file open
and maintains reading the winname file of the window
after a resize we will avoid drawing the text frame
on a resize as it will be overdrawn by the client.
This reduces flicker on resize somewhat for slow systems.
This implements proper intrdisable() support for all
interrupt controllers.
For enable, (*arch->intrassign)(Vctl*) fills in the
Vctl.enable and Vctl.disable pointers with the
appropriate routines and returns the assigned
vector number.
Once the Vctl struct has been linked to its vector
chain, Vctl.enable(Vctl*, shared) gets called with a
flag if the vector has been already enabled (shared).
This order is important here as enabling the interrupt
on the controller before we have linked the chain can
cause spurious interrupts, expecially on mp system
where the interrupt can target a different cpu than
the caller of intrenable().
The intrdisable() case is the other way around.
We first disable the interrupt on the controller
and after that unlink the Vctl from the chain.
On a multiprocessor, the xfree() of the Vctl struct
is delayed to avoid freeing it while it is still
in use by another cpu.
The xen port now also uses pc/irq.c which has been
made generic enougth to handle xen's irq scheme.
Also, archgeneric is now a separate file to avoid
pulling in dependencies from the 8259 interrupt
controller code.
Plan 9 memcpy(2) uses the same implementation as memmove(2) to handle
overlapping ranges. Hovewer, the MIX MOVE instruction, as described
in TAOCP, specifically does not do this. It copies words one at a
time starting from the lowest address.
This change also expands the address validation to check that all
addresses within the source and destination ranges are valid before
proceeding.
Fixes 3 issues in our upas mkfiles:
- mk/mkfile and send/mkfile were rebuilding
only the rfc822.tab.$O, even though the
header also needed to be rebuilt.
- CLEANFILES had a pattern that would not
get expanded.
- Third, ../upas/mkfile was being included
in the wrong place and making the wrong
rule default.
currently the EFI loader's behavior is to search all disks in a
firmware-defined order. we search the list returned by the firmware
in reverse order in the hopes of searching the first 9FAT instead of
the ESP, but this results in unintuitive behavior when there are
multiple FAT partitions (possibly in multiple disks), such as loading
a plan9.ini and kernel from a different disk than the one you executed
the EFI loader from.
to resolve this, we change the EFI loader to instead prefer read
plan9.ini and the kernel from the same disk as the EFI loader was read
from, and then fall back to the old behavior, since the old behavior
is relied on by current installations.
dc crashes because a Blk* sometimes ends getting double freed.
To make it crash, any of these lines will do:
(each line is a separate input to dc):
1 sa 2 :a le d sa v :a
1 sa 2 :a le d sa :a
1 sa 2 :a le d sa c
Fix by assigning p to sptr->val before EMTPY causes a jump.
Additionally, dcgetwd() can return 0. all other uses check for
0 ptr; Also fix a buffer overflow.
It appears that our IDT overlaps with the data structures
passed from grub in multiboot load.
So defer setup of the interrupt table after the multiboot
parameters have been processed.
The driver used to register the interrupt handler just
after reset, tho the Ctlr struct, including the buffer
descriptor arrays where only allocated on attach.
This moves most of the reset/init out of pnp
function and into attach. This also means we can
error out and even retry on the next attach.
The logic of the reseter kproc has been changed:
now it is only started once the first initialization
completely succeeded. This avoids the strange qlock
passing.
Implement a shutdown function so the device gets
halted for /dev/reboot.
Assume 64 bit physical addresses for dma.
Check that pci bar0 is actually I/O.
the hid 1.11 specification says that for hid devices which arent in
the boot subclass (subclass 1), it is only optional to support the set
protocol command. for my devices, trying to set protocol results in a
stall error and unusable devices.
fixes my Tex Shinobi keyboard and Playstation 4 controller.
The new MTRR code handles overlapping ranges
and supports AMD specific TOM2 MSR.
The format in /dev/archctl now only shows
the effective cache ranges only, without
exposing the low level registers.
Before the "native" awk work, a call to the fflush function resulted
in one or more calls to the APE fflush(2).
Calling fflush on a stream open for reading has different behavior
based on the environment: within APE, it's a no-op¹; on OpenBSD, it's
an error²; in musl, it depends on whether or not the underlying file
descriptor is seekable³; etc. I'm sure glibc is subtly different.
Now that awk uses libbio, things are different: calling Bflush(2) on a
file open for reading simply discards any data in the buffer. This
explains why we're seeing truncated input. When awk attempts to read
in the next record, there's nothing in the buffer and no more data to
read so it gets EOF and exits normally. Note that this behavior is not
documented in bio(2). It was added in the second edition but I haven't
figured out why or what depends on it.
The simple fix is to have awk only call Bflush on files that were
opened for writing. You could argue that this is the only correct
behavior according to the awk(1) manual and it is, in fact, how GNU
awk behaves⁴.
1. /sys/src/ape/lib/ap/stdio/fflush.c
2. https://cvsweb.openbsd.org/src/lib/libc/stdio/fflush.c?rev=1.9
3. https://git.musl-libc.org/cgit/musl/tree/src/stdio/fflush.c
4. https://git.savannah.gnu.org/cgit/gawk.git/tree/io.c#n1492
Changeset 50ad211fb12f broke the libcommon rule in
mkupas. Deleting the 'mk clean' in the recipe fixes
this.
Cleanup includes deleting UPDATE vars from all mkfiles,
reorganization of vars in TARG,LIB,OFILE,HFILE order,
and deletion of extra vars used for UPDATE.
loading the interrupt vector table early allows
us to handle traps during bootup before mmuinit()
which gives better diagnostics for debugging.
we also can handle general protection fault on
rdmsr() and wrmsr() which helps during
cpuidentify() and archinit() when probing for
cpu features.
before removing the double map at 0, load our
initial gdt pointer with its new KZERO based
virtual address.
this is prerequisite for handling traps early during
bootup before mmuinit() loads the final gdt.
The fsdestroyfid() is called regardless if the open succeeded
or failed. This causes erroneous videoclose() when opening
the frame or video file while the camera is active.
When using /dev/reboot, the MSI vecor might have already
been setup causing interrupts to fire on the designated
cpu while we send the commands to the card.
reseting irbsts bits in hdacmd() only works
while interrupts are disabled during hdareset().
once interrupts are enabled we need to reset the
irbsts bits in the interrupt handler or else the
interrupt never clears and locks up the system.
Upas/marshal -F was broken with the '-8' command, and silly
without it: It used aliases passed on the command line, so
the destination address was ignored with -8 was passed.
In addition, it would create a new mailbox for any aliases
being sent to, instead of putting them all in one location.
The new -S option is similar to -F, but specifies where the
message should go.
The change 3306:c5cf77167bfe made the code reuse MTRR slots
of the default memory type.
But this did not take overlapping ranges into account!
If two or more variable-range MTRRs overlap, the following rules apply:
a. If the memory types are identical, then that memory type is used.
b. If at least one of the memory types is UC, then UC memory type is used.
c. If at least of of the memory types is WT. and the only other memory type
is WB, then th WT memory type is used.
d. If the combination of memory types is not listed above,
then the memory type used in undefined.
It so happend that on a Dell Latitude E7450 that the BIOS defines
the default type as UC. and the first slot defines a 16GB range
of type WB. Then the rest of the ranges mark the PCI space back
as UC, but overlapping the first WB range! This works because
of rule (B) above.
When trying to make the framebuffer write-combining, we would
falsely reuse one of the UC sub-ranges and making the UC memory
into WB as a side effect.
Thanks to Fulton for his patience and providing debug logs and
doing experiments for us to narrow the problem down.
With some newer UEFI firmware, not all pci bars get
programmed and we have to assign them ourselfs.
This was already done for memory bars. This change
adds the same for i/o port space, by providing a
ioreservewin() function which can be used to allocate
port space within the parent pci-pci bridge window.
Also, the pci code now allocates the pci config
space i/o ports 0xCF8/0xCFC so userspace needs to
use devpnp to access pci config space now. (see
latest realemu change).
Also, this moves the ioalloc()/iofree() code out
of devarch into port/iomap.c as it can be shared
with the ppc mtx kernel.
libcommon.a$O doesn't end with a .a, so mk
doesn't know how to look inside it in order
to check if the files are up to date.
This means that when 'mk clean' is run,
libcommon.a$O looks up to date:
% mk clean
...
% mk
mk: 'default' is up to date
Deleting the library works around this problem.
When $wsys doesn't exist (eg, drawterm -G, or
rcpu from a text console), the profile would
create an empty $wsys variable, and sessions
started in this environment would fail with a
null list in concatenation.
This change tests if /mnt/term/env/wsys exists
before assigning it.
This prevents VESA bios from accessing the pci
CONFIG_ADDRESS/CONFIG_DATA registers (0xCF8/0xCFC)
directly to access pci config space.
This makes sure the access to pci config space is
properly serialized by the kernel.
Our qsort has an optimization to recurse on one
half of the array, and do a tail call on the other
half. Unfortunately, the condition deciding which
half of the array to recurse on was wrong, so we
were recursing on the larger half of the array and
iterating on the smaller half.
This meant that if we picked the partition poorly,
we were pessimizing our stack usage instead of
optimizing it.
This change reduces our stack usage from O(n)
to O(log(n)) for poorly chosen pivots.
vt chording behaves slightly differently from other
applications: a chord must be fully released before
the next chord can be applied. This makes any change
in chord apply the action.
the driver was not using irb interrupts
and was just polling the irb write pointer
to wait for command completion.
this is not supported by qemu.
qemu requires the use of irb interrupt handshake
and it refuses to accept the next command until we
acknowledge the irb interrupt.
supplying a non-ip address in ADD_EDGE crashes the unix tincd.
the reason was that we where misreporting ADD_EDGE messages;
ignoring the information from our peers; and always supplying
the Address string from our configuration instead of the
connections ip address.
now we just report the edge information as is.
the access functions for pci config space in config mode #1
used to set bit 0 in the register offset if the access was
to a device on any bus different from 0.
it is completely unclear why this was done and i can't find
any documentation on this.
but for sure, this breaks all pci config spacess access to
pci devices behind a bridge on qemu. with -trace pci* it
was discovered that all config space register offsets on
devies behind pci brige where off by one.
on real hardware, setting bit 0 in the offset doesnt appear
to be an issue.
thanks mischief for reporting and providing a qemu demo
configuration to reproduce the problem.
On my 6235 card, if we calibrate the crystal
immediately after disabling wimax, the the
firmware gets unhappy. A short nap before
sending the command prevents the command from
timing out.
When moving messages between folders, mbappend,
deliver, and nedmail were trying to parse the
timestamp ouut of the message. They were doing
it incorrectly, trying to include the user name
as part of the date format.
Change to pass just the date to the date parser.
ori and echoline are reporting regression on some 6000 cards;
which sometimes time out on crystal calibration command;
which is expected by the driver. but the new code used
to force a device reset on any command timeout.
reverting to old behaviour until for now until we have
a chance investigating.
We used to assume a 1:1 pairing of processors to submit queues.
With recent machines, we now got more cpu cores than what some
nvme drives support so we need to distribute the queues across
these cpu's which requires locking on command submission.
There is a feature get/set command to probe the number of submit
and completion queues, but we decided to just handling
submission queue create command error gracefully as it is simpler
and has less chance of regression with existing setups.
Thanks to mischief for investigating and writing the code.
I have the problem that i need to delegate a subdomain
to another name server that is confused about its own zone
(and its own name) returning unusable ns records.
With this, one can make up a nameserver entry in ndb that
is authoritative and owned by us for that nameserver,
and then put it in the soa=delegated ns entry.
This promotes the ns record in the soa=delegated to
Authoritative, which avoids overriding the ns rr's from
the confused server for the delegated zone.
we used to only allocate ports from 6881 to 6890,
which limits the maximum of parallel torrents to 9.
this change make it go up to 9000, which gives us
at best 2120 ports, which is overkill but ports might
be randomly occupied by other connections.
the new date format introduced by the previous commit;
using numeric timezone offsets; needs one character more,
so increase the date format buffer to 31 characters.
the whole idea of a ucallocb() is bad, as even access to the
metadata header would be in uncached memory. also, it tuns out
that it was never used by anyone.
the 9000 series uses a new receive descriptor format
wich appears to reqire 4k aligned buffers. the old
format "halfworks" and just makes the firmware not
respond to any commands after the enable paging command.
the smartfifo command appears to causes problems.
but apparently not issuing it at all seems to work
fine on both the 8265 and 9260. so removing the code
for now.
issuing the bindingquota command before associated
makes association impossible. but enabling afterwards
works fine. (tested in 8265 and 9260).
the prph access functions now mask the address with
0xfffff. it is unclear why linux and openbsd drivers
specify addresses beyond that in ther register constants.
the timeevent change is interesting. the timeevent
needs to be restarted when it has stoped to make sure
probing/association packets are sent during the evnet.
Complete the conversion of upas to remove ctime,
use the new date library, and print time zones
in +hhmm format, instead of NNN format.
This may affect code that expects specific names
for timezones. Fix that code.
Recently the script which generates tab.h and the code including it got
incompatibly changed. People reported problems involving syntax errors
when trying to rebuild the system following a sysupdate.
The problem was with the script being embedded within a mkfile rule,
meaning that mk didn't notice it changing and therefore didn't rebuild
the target file. For people who were rebuilding the system this meant
that the old tab.h got included, causing syntax errors.
This patch moves the codegen script into a file and tells mk about this
new dependency, so that tab.h will get rebuilt for everyone. I also
took an opportunity to rewrite the script, hopefuly making it easier to
follow.
RFC959 says:
"The ALLO command should be treated as a NOOP (no
operation) by those servers which do not require
that the maximum size of the file be declared
beforehand..."
Ignoring '?' when formatting date strings allows
the format strings to be reused for parsing. This
is convenient, since we don't need to duplicate
the format strings.
Import the following improvements and bugfixes from plan9port:
4650064a acme: scale window bodies on resize, not including tag space
d28913a9 acme: save/restore multiline tags in Dump/Load
d2df5d6c acme: fix crash in X |cat with multiple windows
3d6e5cb5 acme: preserve window position and selection during Get
The format produced by `diff -u` is inferior to that
produced by `diff -c`, but it's what ape/patch and
unix patch expect, so it's useful to generate it.
This patch adds `diff -u`.
Following is a list of functional changes:
* The -o flag outputs the entire buffer to the length returned
by the syscall, or, in case of fd2path(2) and errstr(2), to '\0'.
* The -x flag is removed; the above makes it possible to pipe
into xd(1) to get the same result.
* The -s flag uses dirfmt(2) to format the stat message, instead
of trying to imitate ls(1).
* Stderr reports are normalized and made easier to parse.
The code also suffered a number of stylistic changes.
Right now, upasfs exposes header lines as is, without stripping
out new lines. It also documents that it provides one header per
line in the info file.
As a result, when we get a mail with headers that span lines,
our tools get confused.
These split lines are not semantically meaningful. From RFC5322:
2.2.3. Long Header Fields
Each header field is logically a single line of characters comprising
the field name, the colon, and the field body. For convenience
however, and to deal with the 998/78 character limitations per line,
the field body portion of a header field can be split into a
multiple-line representation; this is called "folding". The general
rule is that wherever this specification allows for folding white
space (not simply WSP characters), a CRLF may be inserted before any
WSP.
As a result, to simplify processing, we should just strip out the
line separators when exposing the headers from upasfs.
The new pci code is moved to port/pci.[hc] and shared by
all ports.
Each port has its own PCI controller implementation,
providing the pcicfgrw*() functions for low level pci
config space access. The locking for pcicfgrw*() is now
done by the caller (only port/pci.c).
Device drivers now need to include "../port/pci.h" in
addition to "io.h".
The new code now checks bridge windows and membars,
while enumerating the bus, giving the pc driver a chance
to re-assign them. This is needed because some UEFI
implementations fail to assign the bars for some devices,
so we need to do it outselfs. (See pcireservemem()).
While working on this, it was discovered that the pci
code assimed the smallest I/O bar size is 16 (pcibarsize()),
which is wrong. I/O bars can be as small as 4 bytes.
Bit 1 in an I/O bar is also reserved and should be masked off,
making the port mask: port = bar & ~3;
There were a number of ideas that were tried out as the tmdate
api evolved. As a result, there were some references in the
manpage to things that are no more.
Fix them.
Ctime is defined as printing a 3-character timezone
name. The timezone name is ambiguous. For example,
EST refers to both Australian and American eastern
time. On top of that, we don't want to make the
tzabbrev table exhaustive. So, we put in this hack:
Before we consult the well known table of timezones,
we check if the local time matches the timezone name.
On top of that, tm2sec
If you want unambiguous timezone parsing, use numeric
timezone offsets (Z, ZZ formats).
