Create macros for the byte swap operations one would expect to be in
endian.h or byteswap.h in AK/Endian.h. It's likely a similar/different
change will be needed for BSDs, but there's no github action for those
added to the project yet.
This was a goofy kernel API where you could assign an icon_id (int) to
a process which referred to a global shbuf with a 16x16 icon bitmap
inside it.
Instead of this, programs that want to display a process icon now
retrieve it from the process executable instead.
This commit gets rid of ELF::Loader entirely since its very ambiguous
purpose was actually to load executables for the kernel, and that is
now handled by the kernel itself.
This patch includes some drive-by cleanup in LibDebug and CrashDaemon
enabled by the fact that we no longer need to keep the ref-counted
ELF::Loader around.
We now configure the gcc spec files to use a different crt files for
static & PIE binaries.
This relieves us from the need to explicitly specify the desired crt0
file in cmake scripts.
open(1) was able to handle most URLs as well as paths, but not file://
URLs (which occur when dragging something from the output of ls, for
example). We have to create an URL from the user-supplied argument using
create_with_url_or_path(), check whether it's a file:// URL or not and
*then* use real_path_for() on the URL's path().
Also simplify the file copying logic a bit to avoid two syscalls
per file. We now create the file with the right mode right away
instead of creating it first, and then fchmod'ing it later.
Fixes#4479.
POSIX allows the default streams (stdin, stdout and stderr) to be
macros, which means that on such systems (musl libc is one) building
Lagom will fail due to the File::std*() names.
Also fix any files that use these identifiers.
This implements a number of changes related to time:
* If a HPET is present, it is now used only as a system timer, unless
the Local APIC timer is used (in which case the HPET timer will not
trigger any interrupts at all).
* If a HPET is present, the current time can now be as accurate as the
chip can be, independently from the system timer. We now query the
HPET main counter for the current time in CPU #0's system timer
interrupt, and use that as a base line. If a high precision time is
queried, that base line is used in combination with quering the HPET
timer directly, which should give a much more accurate time stamp at
the expense of more overhead. For faster time stamps, the more coarse
value based on the last interrupt will be returned. This also means
that any missed interrupts should not cause the time to drift.
* The default system interrupt rate is reduced to about 250 per second.
* Fix calculation of Thread CPU usage by using the amount of ticks they
used rather than the number of times a context switch happened.
* Implement CLOCK_REALTIME_COARSE and CLOCK_MONOTONIC_COARSE and use it
for most cases where precise timestamps are not needed.
Problem:
- `(void)` simply casts the expression to void. This is understood to
indicate that it is ignored, but this is really a compiler trick to
get the compiler to not generate a warning.
Solution:
- Use the `[[maybe_unused]]` attribute to indicate the value is unused.
Note:
- Functions taking a `(void)` argument list have also been changed to
`()` because this is not needed and shows up in the same grep
command.
When loading dynamic objects, the emulator loads the interpreter,
generates an auxiliary vector and starts executing the loader.
Additionally, this commits also makes the MallocTracer and backtrace
symbolication work for dynamically loaded programs.
The dynamic loader exists as /usr/lib/Loader.so and is loaded by the
kernel when ET_DYN programs are executed.
The dynamic loader is responsible for loading the dependencies of the
main program, allocating TLS storage, preparing all loaded objects for
execution and finally jumping to the entry of the main program.
Almost everyone using this API actually wanted String instead of a
ByteBuffer anyway, and there were a bunch of slightly different ways
clients would convert to String.
Let's just cut out all the confusion and make it return String. :^)
pthread implementations generally return errors as a positive non-zero
value. Our kernel generally returns errors as negative values. If we
receive a negative value from a system call, turn it into a positive
return value to relay the error appropriately.
Also, fix the tt test utility to not rely on errno, as the pthread
library does not use errno.
The bug is that if you try to cp DIR_A to DIR_B where DIR_A and DIR_B
have the same parent directory and DIR_A's name is a prefix of DIR_B
(e.g. foo -> foo2, bar -> barbar), it thinks that it's a subdirectory
(since it checks if DIR_A's realpath is a prefix of DIR_B's realpath).
The easiest solution is to put a path delimiter at the end before the
comparison, since you can't have a / in the middle of a directory name.
For example if DIR_A is /home/anon/foo and DIR_B is /home/anon/foo2,
then DIR_A's realpath is a prefix of DIR_B's realpath even though DIR_B
is not inside DIR_A.
