cert-dcl50-cpp: No variadic functions, suppressed in RefCounted and
ThreadSafeRefCounted for implementing the magic one_ref_left and
will_be_destroyed functions.
cert-dcl58-cpp: No opening ::std, suppressed in the places we put names
in ::std to aid tools (move, forward, nullptr_t, align_val_t, etc).
Instead of repeating ourselves with the pattern of waiting for some
condition to be met, we can have a general method for this task,
and then we can provide the retry count, the required delay and a lambda
function for the checked condition.
Don't use interrupts when trying to reset a device that is connected to
a port on the AHCI controller, and instead poll for changes in status to
break out from the loop. At the worst case scenario we can wait 0.01
seconds for each SATA reset.
Don't use interrupts when trying to identify a device that is connected
to a port on the AHCI controller, and instead poll for changes in status
to end the transaction.
Not only this simplifies the initialization sequence, it ensures that
for whatever reason the controller doesn't send an IRQ, we are never
getting stuck at this point.
Like what happened with the PCI and USB code, this feels like the right
thing to do because we can improve on the ATA capabilities and keep it
distinguished from the rest of the subsystem.
`off_t` is a 64-bit signed integer, so passing it in a register on i686
is not the best idea.
This fix gets us one step closer to making the LLVM port work.
As soon as we enable the first PS/2 port on the I8042 controller, the
output buffer may become full. We need to drain it before attempting
any new commands with the controller (such as enabling the second PS/2
port).
Fixes#10872.
Instead of signalling allocation failure with a bool return value
(false), we now use ErrorOr<void> and return ENOMEM as appropriate.
This allows us to use TRY() and MUST() with Vector. :^)
In particular, fstatvfs used to assume that a file that was earlier
opened using some path will forever be at that path. This is wrong, and
in the meantime new mounts and new filesystems could take up the
filename or directories, leading to a completely inaccurate result.
This commit improves the situation:
- All filesystem information is now always accurate.
- The mount flags *might* be erroneously zero, if the custody for the
open file is not available. I don't know when that might happen, but
it is definitely not the typical case.
We now use AK::Error and AK::ErrorOr<T> in both kernel and userspace!
This was a slightly tedious refactoring that took a long time, so it's
not unlikely that some bugs crept in.
Nevertheless, it does pass basic functionality testing, and it's just
real nice to finally see the same pattern in all contexts. :^)
The Qemu I8042 controller does not send one IRQ per event, it sends
over four since it will not stop trying to emulate the PS/2 mouse.
If the VMWare backdoor is active, a fake I8042 mouse event will be sent
that we can then use to check if there are VMWare mouse events present.
However, we were only processing one mouse event at a time, even though
multiple events could have been queued up. Luckily this does not often
lead to issues, since after the first IRQ we would still get three
additional interrupts that would then empty the queue.
This change makes sure we always empty the event queue immediately,
instead of waiting on the next interrupt to happen. Functionally this
changes nothing - it could merely improve latency by not waiting for
new interrupts to come in.
Coincidently, this brings our implementation closer to how Linux deals
with the VMMouse.
This reverts commit 4131b35851.
We're swallowing way too many mouse events from QEMU with this code
enabled. Something is not right, so let's revert it for now.
This removes some code dupe from the constructors.
By removing this duplicate constructor we can utilize the main
VirtualConsole::create factory implementation and call that from the
VirtualConsole::create_with_preset_log factory method.
These are constants, they don't need to be dynamically allocated.
Another minor step towards removing `AK::String` from the Kernel
and improving OOM safety.
The goal was to reduce common setup of messages. Changes:
* MailBox turned into singleton to follow existing patterns
* Removed device specific messages from MailBox requiring
clients to know the details instead
* Created base Message class which clients should deriver from
It really simplify the usage for more complicated message queues
like framebuffer setup - see followup commits.
This FIXME does not seem to apply anymore. Yes, symbolic links in all
filesystems appear to be slightly broken, but that has nothing to do
with File::absolute_path. Let's remove the wrong FIXME instead of adding
to the confusion.
Found due to smelly code in InodeFile::absolute_path.
In particular, this replaces the following misleading methods:
File::absolute_path
This method *never* returns an actual path, and if called on an
InodeFile (which is impossible), it would VERIFY_NOT_REACHED().
OpenFileDescription::try_serialize_absolute_path
OpenFileDescription::absolute_path
These methods do not guarantee to return an actual path (just like the
other method), and just like Custody::absolute_path they do not
guarantee accuracy. In particular, just renaming the method made a
TOCTOU bug obvious.
The new method signatures use KResultOr, just like
try_serialize_absolute_path() already did.
We were accidentally casting the pointer to m_ttl from an u8* to an int*
which resulted in copying of 3 extra unrelated bytes (which turned out
to be padding in this case).
