Bananymous/banan-os
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Commit Graph
47 Commits
Author SHA1 Message Date
Bananymous cd6269d406 Kernel: Add very simple BGA driver 
Only thing this is currently helpful is qemu when booting with -kernel
flag as that does not provide framebuffer info in multiboot headers
 2026-08-24 01:35:06 +03:00
Bananymous eee0b7c3ff Kernel: Make ioctl take unsigned long instead of int 
this is what linux does :D

also fix one or two `return ioctl` instead of `return ioctl_impl`
 2026-07-07 03:12:39 +03:00
Bananymous ed3924722e Kernel: Remove kernel CPU load printing 
We still keep track of processor loads but the hacky printing is no
longer done in kernel space :)
 2026-05-20 19:11:27 +03:00
DcraftBgandBananymous 16967cd9c0 Kernel: Replace is_* with kind field 
Replaced the is_* virtual functions with a kind field instead
 2026-05-15 21:23:12 +03:00
DcraftBgandBananymous 647d6a273d Kernel: Changed stat values from func to be field 
- Removed virtual functions for all of the stat stuff.
This did however introduce some issues, mainly with /proc
becoming out of sync if you changed your ID. I propose we
do the linux thing and just have a stat update function
which is optional, but allows dynamic updates of stat fields
for cases such as those in uid/gid in /proc.
- Simplified the API, although still kind of annoying
it is a bit simpler.
- Moved some of the FS structure from having the FS inode inside
the in memory inode to a Serialise <-> Deserialise model where
Inodes are deserialised from disk into in memory ones and then
back into on disk ones when it comes time for syncing.
This makes it semantically better in my opinion, as it explicitly
separates disk and non-disk functionality.
 2026-05-15 20:49:04 +03:00
Bananymous b74812d669 Kernel: Remove unnused features from VirtualRange 
On-demand paging has not been used ever since I made userspace stack be
a normal MemoryRegion.
 2026-04-21 19:58:09 +03:00
Bananymous ac6e6f3ec1 Kernel: Add ioctl to sync rectangular areas in framebuffer 
msync is not really the best API for framebuffer synchronization
 2026-04-11 08:29:10 +03:00
Bananymous d16f07a547 Kernel: Print thread id when writing to /dev/debug 2026-02-27 19:12:35 +02:00
Bananymous 9537922acc Kernel: Implement proper memory region splitting 
Memory regions are now splitted when they get munmapped, mprotected, or
mmapped with MAP_FIXED. This is used by couple of ports, and without
this we were just leaking up memory or straight up crashing programs.
 2025-11-13 04:20:53 +02:00
Bananymous f519cb2cc0 Kernel: Expose boot framebuffer device 2025-10-28 05:50:19 +02:00
Bananymous f1369c8fd6 Kernel/LibC: Implement mprotect 
There may be some race conditions with this but i think this is good
enough to start with
 2025-08-05 03:09:24 +03:00
Bananymous 6084aae603 Kernel: Add guard pages to kernel and userspace stacks 2025-07-02 23:12:36 +03:00
Bananymous fb7e9719a1 Kernel: Add fast fill method to framebuffer device 
This makes `clear` much faster when running without kvm!
 2025-07-02 00:17:42 +03:00
Bananymous c2d09b64ca Kernel: Drop 24 bpp support from double buffer 
I don't even know why this was supported, I am not planning on making
the fb anything other than 32 bpp
 2025-07-02 00:17:42 +03:00
Bananymous 994713d04c Kernel: Implement FramebufferDevice::get_pixel() 2025-04-18 02:35:28 +03:00
Bananymous 554b13ac50 Kernel: Restructure terminal initialization 
This is still very ugly and will be rewritten in the future :D
 2025-04-18 01:19:59 +03:00
Bananymous 95f262b3e6 Kernel: Print process pid through /dev/debug 2025-04-01 23:09:30 +03:00
Bananymous 5e8fdc997a Kernel: Prevent userspace from overwriting CPU load memory 2024-11-17 20:15:28 +02:00
Bananymous 2b43569927 Kernel: Use enums in boot info instead of magic values 2024-10-14 11:36:51 +03:00
Bananymous c77ad5fb34 Kernel: Implement copy-on-write memory for file backed mmaps 2024-09-11 19:33:50 +03:00
Bananymous 23194d1f53 Kernel: Implement basic random device to /dev/random 2024-08-22 14:02:26 +03:00
Bananymous 0578d41500 Kernel: Implement WriteCombining memory 
This makes framebuffer much faster on real hardware
 2024-07-15 22:09:09 +03:00
Bananymous 1a844426c3 Kernel: Add fast path for framembuffer sync if bpp == 32 2024-06-28 23:34:11 +03:00
Bananymous 42237a3bc8 Kernel: Implement fast scrolling for TTY 2024-06-28 23:15:03 +03:00
Bananymous 67dfe0bcf3 BAN: Allow String::formatted to fail 2024-06-25 11:04:03 +03:00
Bananymous b5aae34d86 Kernel: Specify template paramenters where they cannot be deduced 2024-03-22 15:41:15 +02:00
Bananymous d94f6388b7 Kernel: Fix all broken locks from new mutexes 2024-02-28 22:45:34 +02:00
Bananymous 9594ee8e47 Kernel: Start making device numbers unique for each device 2024-02-22 15:53:48 +02:00
Bananymous 692cec8458 Kernel/Userspace/LibC: Implement basic dprintln for userspace 2024-02-05 01:24:09 +02:00
Bananymous dfe5a2d665 All: Cleanup all files 
Add newline to end of files and remove whitespace from end of lines
 2024-01-24 15:53:38 +02:00
Bananymous 9fa13079f2 Kernel: Implement supplementary groups 
This code has very ugly file parsing code. I have to create API
for reading files line by line in kernel space...

This allows users to open framebuffer/input files without root.

Mounting has to be moved to userspace soon. It makes no sense to
hard code permissions for every (device) file.
 2024-01-02 23:24:32 +02:00
Bananymous 6cd5763361 Kernel: Allow cloning of mmapped framebuffer regions 2023-12-14 10:54:06 +02:00
Bananymous 9b841cb823 BuildSystem/Kernel: Enable -Wextra and -Werror in kernel 
Only needed to fix some unused variable bugs
 2023-12-01 01:22:53 +02:00
Bananymous 327b330338 Kernel: Make internal framebuffer bpp constexpr defined in libc 2023-11-29 20:07:33 +02:00
Bananymous d7a3aca5d4 Kernel: Use the correct bpp when writing to framebuffer 2023-11-29 00:31:24 +02:00
Bananymous cc572af390 Kernel: Implement mmaping for framebuffer device 2023-11-28 23:51:56 +02:00
Bananymous d86ecf4f61 Kernel: Reading from negative offset in fb dev gives out info 2023-11-28 23:50:11 +02:00
Bananymous b88a7e0c6b Kernel: Add more APIs to FramebufferDevice 2023-11-22 21:56:27 +02:00
Bananymous cdf53f33f6 Kernel: Implement basic framebuffer device 
This allows exposing framebuffer to userspace
 2023-11-22 20:34:41 +02:00
Bananymous 5044810451 Kernel: Make DevFS use the new and better TmpFS instead of RamFS 2023-11-07 16:05:05 +02:00
Bananymous f3d9da9549 Kernel: Rewrite all read/write functions to use BAN::ByteSpan 
This allows us to not work with raw pointers and use sized containers
for reading and writing.
 2023-10-24 11:56:00 +03:00
Bananymous 2301654c4e Kernel: Rework RamInode API 
RamInode is now a general RamInode with no data. RamFileInode is now
a inode for regular files. This is much cleaner and more intuitive
since there is no reason for most non-regular inodes to hold data
Vector.
 2023-09-30 19:22:30 +03:00
Bananymous 921d95d18f All: Clear lines with only whitspace in them 2023-09-10 00:31:42 +03:00
Bananymous 1fcf122c50 Kernel: Add basic ZeroDevice to /dev/zero 2023-09-10 00:31:42 +03:00
Bananymous 323de3c866 Kernel: Rework whole Terminal structure 
Serial monitors can now be used as a output. This requires editing
init code for the stdio opening. Serial input is not supported, so qemu
still needs graphical window for ps/2 keyboard.
 2023-09-04 19:34:18 +03:00
Bananymous b02c486ad0 Kernel: add NullDevice to /dev/null 2023-07-20 00:06:22 +03:00
Bananymous 08cd285ca6 Kernel: move Device.h to its own directory 2023-07-19 23:55:38 +03:00