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- sys$readlink + readlink()
- Add a /proc/PID/exe symlink to the process's executable.
- Print symlink contents in ls output.
- Some work on plumbing options into VFS::open().
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This shows some info about the MM. Right now it's just the zone count
and the number of free physical pages. Lots more can be added.
Also added "exit" to sh so we can nest shells and exit from them.
I also noticed that we were leaking all the physical pages, so fixed that.
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With a bunch of LibC work to support the feature. LibC now initializes
AK::StringImpl by default. It's now fine to use AK in LibC/Userland! :^)
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Also added a little terminal test program called /bin/tst.
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The cwd looks like crap, I need to write some code to strip out ".."
and extra slashes from the path string.
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It doesn't work yet, but it will!
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Use it to make "ls" output a bit better. Also sys$spawn now fails with EACCES
if the path is not a file that's executable by the current uid/gid.
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This took me a couple hours. :^)
The ELF loading code now allocates a single region for the entire
file and creates virtual memory mappings for the sections as needed.
Very nice!
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I also added a generator cache to FileHandle. This way, multiple
reads to a generated file (i.e in a synthfs) can transparently
handle multiple calls to read() without the contents changing
between calls.
The cache is discarded at EOF (or when the FileHandle is destroyed.)
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It walks the stack and identifies anything that looks like a kernel symbol.
This could be a lot more sophisticated.
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Celebrate the new functionality with a simple /bin/cat implementation. :^)
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This only has second accuracy right now, I'll work out subseconds later.
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This also meant I had to implement BSS (SHT_NOBITS) sections in ELFLoader.
I also added an strerror() so we can print out what the errors are.
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It's implemented as a separate process. How cute is that.
Tasks now have a current working directory. Spawned tasks inherit their
parent task's working directory.
Currently everyone just uses "/" as there's no way to chdir().
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I added a dead-simple malloc that only allows allocations < 4096 bytes.
It just forwards the request to mmap() every time.
I also added simplified versions of opendir() and readdir().
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- Turn Keyboard into a CharacterDevice (85,1) at /dev/keyboard.
- Implement MM::unmapRegionsForTask() and MM::unmapRegion()
- Save SS correctly on interrupt.
- Add a simple Spawn syscall for launching another process.
- Move a bunch of IO syscall debug output behind DEBUG_IO.
- Have ASSERT do a "cli" immediately when failing.
This makes the output look proper every time.
- Implement a bunch of syscalls in LibC.
- Add a simple shell ("sh"). All it can do now is read a line
of text from /dev/keyboard and then try launching the specified
executable by calling spawn().
There are definitely bugs in here, but we're moving on forward.
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It statically links against everything in LibC that it needs.
This will work just fine for a long time to come!
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We can now produce what should essentially be a runnable Serenity executable.
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