cinap_lenrek [Sun, 27 Dec 2020 22:08:59 +0000 (23:08 +0100)]
devvga: implement screen tilting, remove panning and overlays
Tilting allows using left/right rotated or invetrted display orientation.
This can be changed at runtime such as: echo tilt right > /dev/vgactl
This removes the old panning and vga overlays as they are only implemented
with some ancient vga controllers.
cinap_lenrek [Wed, 23 Dec 2020 01:31:28 +0000 (02:31 +0100)]
libc: re-implement getuser() by stating /proc/$pid/status
The idea is to avoid the magic files that contain
per process information in devcons when possible.
It will make it easier to deprecate them in the future.
cinap_lenrek [Tue, 22 Dec 2020 15:29:55 +0000 (16:29 +0100)]
kernel: avoid palloc lock during mmurelease()
Previously, mmurelease() was always called with
palloc spinlock held.
This is unneccesary for some mmurelease()
implementations as they wont release pages
to the palloc pool.
This change removes pagechainhead() and
pagechaindone() and replaces them with just
freepages() call, which aquires the palloc
lock internally as needed.
freepages() avoids holding the palloc lock
while walking the linked list of pages,
avoding some lock contention.
cinap_lenrek [Sun, 20 Dec 2020 22:08:11 +0000 (23:08 +0100)]
ndb/dns: handle dnskey RR's (thanks moody)
On 12/18/20, Jacob Moody wrote:
> Hello,
>
> I recently ran in to some issues with pointing an unbound server towards a
> 9front dns server as its upstream.
> The parsing seemed to fail when ndb/dns received a DNSKEY RR from it's own
> upstream source on behalf of unbound.
> This patch catches and stores the DNSKEY from the upstream server to prevent
> this.
cinap_lenrek [Sun, 20 Dec 2020 21:34:41 +0000 (22:34 +0100)]
kernel: handle tos and per process pcycle counters in port/
we might as well handle the per process cycle
counter in the portable part instead of duplicating the code
in every arch and have inconsistent implementations.
we now have a portable kenter() and kexit() function,
that is ment to be used in trap/syscall from user,
which updates the counters.
Ori Bernstein [Sat, 19 Dec 2020 03:23:48 +0000 (19:23 -0800)]
vt: rfork environment varibles (thanks fshahriar)
vt sets several environment variables ($TERM, $COLS, $LINES)
after exiting. This change rforks the environment so that this
detritus doesn't get left behind.
Ori Bernstein [Fri, 18 Dec 2020 04:26:38 +0000 (20:26 -0800)]
hpost: support custom headers (thanks julienxx)
hget supports adding custom headers with -r;
it makes sense for hpost to do the same, both
because custom headers are more likely necessary
with POSTs, and for consistency.
cinap_lenrek [Thu, 17 Dec 2020 19:55:59 +0000 (20:55 +0100)]
ether2114x: vetting the driver for pc64
the tulip driver is used in microsofts hypver-v
as the legacy ethernet adapter for pxe booting.
to make the driver work on pc64, we need to
store the Block* pointers in a separate array
instead of stuffing them into buffer address 2
of the hardware descriptor.
cinap_lenrek [Sun, 13 Dec 2020 15:04:09 +0000 (16:04 +0100)]
kernel: implement per file descriptor OCEXEC flag, reject ORCLOSE when opening /fd, /srv and /shr
The OCEXEC flag used to be maintained per channel,
making it shared between all the file desciptors.
This has a unexpected side effects with regard to
channel passing drivers such as devdup (/fd),
devsrv (/srv) and devshr (/shr).
For example, opening a /srv file with OCEXEC
makes it impossible to be remounted by exportfs
as it internally does a exec() to mount and
re-export it. There is no way to reset the flag.
This change makes the OCEXEC flag per file descriptor,
so a open with the OCEXEC flag only affects the fd
group of the calling process, and not the channel
itself.
On rfork(RFFDG), the per file descriptor flags get
copied.
On dup(), the per file descriptor flags are reset.
The second modification is that /fd, /srv and /shr
should reject the ORCLOSE flag, as the files that
are returned have already been opend.
cinap_lenrek [Tue, 8 Dec 2020 15:00:57 +0000 (16:00 +0100)]
pc64: preserve reserved bits in CR0/CR4 for amd64 in mtrr setstate()
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.