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Author SHA1 Message Date
Bananymous 6cb8bda6e1 LibC: add syncsync() to unistd.h 
This is my own WELL NAMED (:D) function that takes a paramemeter
to make the sync operation synchronous.
 2023-09-27 00:35:36 +03:00
Bananymous 05e57801e7 Kernel: SYS_SYNC now schedules sync to happen soon 
You can pass non-zero argument to the syscall to block until the
sync has finished.
 2023-09-27 00:34:00 +03:00
Bananymous b924c85669 Kernel: DiskCache now requires sync to be called from kernel thread 
This disables the scenario where user interrupts sync operation
possibly leaving the syncing in invalid state.
 2023-09-27 00:32:13 +03:00
Bananymous 09c1aa44d8 Kernel: Allow creationg of empty processes and manual registration 
You can now create kernel processes without any threads, add the
needed threads and only then register the process and its threads
to the scheduler.
 2023-09-27 00:29:45 +03:00
Bananymous 1d470fb5ba Kernel: All syscalls now validate users pointers 
We now validate pointers passed by the user, to forbid arbitary
memory read/write. Now the user is only allowed to pass in pointers
in their own mapped memory space (or null).
 2023-09-25 22:07:12 +03:00
Bananymous b4e4f7a6cc Kernel: Print more detailed output on ISR 2023-09-25 20:33:07 +03:00
Bananymous 55d30a7cc3 Kernel: Ext2 inodes are now stored in cache 
This allows faster inode access and ensures working inodes when
opened in multiple places.
 2023-09-25 20:31:40 +03:00
Bananymous b62186441b BAN: Implement basic WeakPtr 
This can be constructed from classes that inherit from Weakable
 2023-09-25 19:43:10 +03:00
Bananymous 8caba1e774 Kernel: Ext2 filesystem now holds 10 preallocated block buffers 
Inodes can query blocks from this buffer. This allows allocation of
blocks to not fail during normal operations. Also less stress on
kmalloc.
 2023-09-25 14:32:25 +03:00
Bananymous 7bdb428938 Kernel: Fix ext2 block allocation 
Redo ext2 block allocation. This is now much "cleaner" although
I'm not too fond of the macros.
 2023-09-25 13:17:44 +03:00
Bananymous 3ea707c0e7 BuildSystem: Optimize image creation 
We now use truncate to create disk image, since it doesn't require
writing zeroes to full disk. I also removed creation of third
partition as this was not currently used.
 2023-09-25 13:15:55 +03:00
Bananymous 18d582c6ce Kernel: Hacky kmalloc quick fix 
Remove GeneralAllocator from kmalloc as it is not CriticalScope safe.
This requires increasing kmalloc memory.
 2023-09-25 13:13:57 +03:00
Bananymous 8b2bb95b81 Kernel: VirtualRange doesn't store physical addresses of pages 
This was unnecessarry allocation, since the page table allready
contains virtual address -> physical address mappings.
 2023-09-24 01:29:34 +03:00
Bananymous 2ef496a24a Kernel: all mapped ranges are now stored in one container 
We just now have a flag if a mapping is unmappable
 2023-09-23 23:45:26 +03:00
Bananymous c0a89e8951 Kernel: Fully remove sys_alloc and sys_free 
I could delete the whole FixedWidthAllocator as it was now obsolete.
GeneralAllocator is still used by kmalloc. Kmalloc cannot actually
use it since, GeneralAllocator depends on SpinLock and kmalloc runs
without interrupts.
 2023-09-23 03:53:30 +03:00
Bananymous fc953df281 Kernel/LibC: remove PATH resoltion from kernel 
I have no idea why I had made PATH environment variable parsing
to be part of the kernel. Now the shell does the parsing and
environment syscall is no longer needed.
 2023-09-23 03:08:14 +03:00
Bananymous fe2dca16f0 Kernel/LibC: add flag to enable/disable sse support 
SSE support is very experimental and causes GP. I decided to make
SSE not default until I get to fixing it :)
 2023-09-23 02:28:25 +03:00
Bananymous f662aa6da2 Kernel/LibC: userspace malloc now uses mmap to get memory 
We could remove syscalls to allocate more memory. This was not
something the kernel should have done.
 2023-09-23 02:26:23 +03:00
Bananymous fee3677fb9 Kernel/LibC: add mmap for private anonymous mappings 
This will be used by the userspace to get more memory. Currently
kernel handles all allocations, which is not preferable.
 2023-09-22 23:01:14 +03:00
Bananymous 4818c6e3dd BuildSystem: Add cmake target for debugging qemu 2023-09-22 17:20:35 +03:00
Bananymous 971eb737c1 BAN: Fix LinkedList::pop_back() 2023-09-22 17:20:35 +03:00
Bananymous 9a3286ad57 Kernel: Add constexpr conditional debug prints 2023-09-22 17:20:35 +03:00
Bananymous c9e09b840e Kernel: Add LAI as a dependency 
I did not feel like implementing AML interpreter now, and wanted
everything AML has to offer. I will be writing my own AML interperter
at some point.
 2023-09-22 17:20:35 +03:00
Bananymous 8136248a67 Kernel: Fix timer includes 2023-09-22 17:20:35 +03:00
Bananymous 0d67e46041 Kernel: Add config read/write api to PCI 2023-09-22 17:20:35 +03:00
Bananymous bc1087f5a7 Kernel: Add pointer validation API to page table 2023-09-22 17:20:35 +03:00
Bananymous 3a9c6fc51a General: remove linecount.sh 2023-09-22 17:20:35 +03:00
Bananymous 7774f56ab6 Kernel: PCI devices can now create region for BAR 
This creates either MEM or IO region for read/write access to PCI
device.
 2023-09-22 17:20:35 +03:00
Bananymous 14a608effd 1000th COMMIT: Kernel: Add basic E1000 driver 
This driver is only capable to read mac address and enable and read
link status
 2023-09-22 17:20:28 +03:00
Bananymous 5fae3cec2a Kernel: Implement SYS_SYNC and add sync executable to userspace 
You can (and have to) manually sync disk after writes to it.
 2023-09-11 01:26:27 +03:00
Bananymous b0c22b61ec Kernel: Writes to disk are not synchronous anymore 
Implement "proper" DiskCache syncing
 2023-09-11 01:25:16 +03:00
Bananymous 82b049204d Kernel: Print stack trace on isr 2023-09-11 01:20:55 +03:00
Bananymous aa59142bfa Kernel: Fix ext2 file write 2023-09-11 01:20:39 +03:00
Bananymous c55bb77ff5 BuildSystem: remove install-usb.sh since it is not used 
This was dangerous script since it rewrote /dev/sda
 2023-09-10 01:20:44 +03:00
Bananymous 9b4e2e1e21 Kernel: Add basic dd command 
This only supports if, of, bs, count and status=progress
 2023-09-10 01:19:47 +03:00
Bananymous 202c38a65a Kernel: Improve open() POSIX compatability 
Also rename Process::sys_creat -> create_file since it is not
actually a syscall and only used by open as a healper.
 2023-09-10 00:31:42 +03:00
Bananymous 720bc418a6 All: Clear lines with only whitspace in them 2023-09-10 00:31:42 +03:00
Bananymous d77f455065 Kernel: Add basic ZeroDevice to /dev/zero 2023-09-10 00:31:42 +03:00
Bananymous 7e08f0fb66 Kernel: Start work on making inodes more thread safe 
All inode operations are now locked and thread blocked
 2023-09-10 00:31:42 +03:00
Bananymous 9e4a87021c Kernel: Fix directory permissions 
We did not care about X bit in directories and instead used only the
R bit for search/read.
 2023-09-08 11:46:53 +03:00
Bananymous 5887f6bcaa Kernel: Ext2 directories can allocate new blocks if needed 2023-09-08 10:29:26 +03:00
Bananymous 5d67559e33 Kernel: Fix bug in disk writing 
I have used two weeks in locating a bug in my ext2 implementation
while the bug was actually in disk write. If you called write_sectors
on disk it would write the first sector_size bytes repeatedly to all
asked sectors and this corrupted the disk...
 2023-09-08 02:43:08 +03:00
Bananymous e631eb7a7a Kernel: Fix possible out-of-bounds disk access in ext2 2023-09-08 02:42:53 +03:00
Bananymous 64ff4c232a BuildSystem: Cleanup disk image creation 2023-09-08 02:41:39 +03:00
Bananymous 0ec4f970f7 LibC: fix fread implementation 
fread() should read until either size*nitems bytes are read or eof
is reached.
 2023-09-07 16:00:47 +03:00
Bananymous afe95be42f Shell: Clean exit on ^D and use getchar() 
Use getchar() instead of fread(&ch, 1, sizeof(char), stdin). This
is much cleaner.
 2023-09-07 15:51:05 +03:00
Bananymous 14ac1c9904 Init: use read instead of fread() 
This allows actually correct behaviour. My fread implementation is
flawed. It should not return on '\n'
 2023-09-07 15:47:59 +03:00
Bananymous 7c11ea3694 Kernel: Cleanup TTY::read() 2023-09-07 15:27:21 +03:00
Bananymous c1fd341698 Kernel: TTY now reads input byte by byte 
This allows correct behaviour for character streams / keyboard
handling. Serial input can now send working ^C :D
 2023-09-07 15:06:27 +03:00
Bananymous 0deab1be51 Kernel: Remove bitmap debug printing from ext2 inode allocation 2023-09-06 01:25:09 +03:00
Bananymous 5a623adaa6 Kernel: Correct inode links count 2023-09-05 14:46:56 +03:00
Bananymous 4363118d9d Snake render grid lines without extra space after last '#' 2023-09-05 14:35:53 +03:00
Bananymous d613da4b6c BuildSystem: Don't set permissions on image creation 
This is already handled by *new* tar ball sysroot
 2023-09-05 14:35:53 +03:00
Bananymous f46f5b2050 Snake: Reorder apple generation/snake body update 
If new apple was generated to heads previous position after update,
it would not render.
 2023-09-05 14:30:30 +03:00
Bananymous d9c4114b5f Base: Add grub entries for serial-only boot 
We can now fully boot with serial input and output :)
Qemu can be run with -nographic flag
 2023-09-05 01:07:52 +03:00
Bananymous ddd36af0f1 Kernel: Add /dev/tty symlink that targets the current tty 2023-09-05 01:07:52 +03:00
Bananymous 35fd30ee29 Kernel: Implement basic RamSymlinkInode 2023-09-05 01:07:52 +03:00
Bananymous 4a0652684c Kernel: You can now read serial output from the /dev/ttyS* 2023-09-05 01:07:52 +03:00
Bananymous 33c81f00b7 Kernel: Receive interrupts for COM1 and COM2 input 
The input has to still be attached to terminal
 2023-09-04 22:07:40 +03:00
Bananymous 55714b90cd 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 9b47603a1d Kernel: Make serial devices to their own class 2023-09-04 14:57:05 +03:00
Bananymous 2e2a913412 Userspace: Implement basic snake game :) 2023-09-04 14:30:45 +03:00
Bananymous 42b85dc33b Kernel: Add ANSI support for hiding/showing cursor to TTY 2023-09-04 14:30:09 +03:00
Bananymous a15ffcb071 LibC: add time() implementation 2023-09-04 13:52:58 +03:00
Bananymous 692b77fb8e LibC: Add rand() and srand() implementation 
This code is from the wikipedia page for Permuted congruential generator
 2023-09-04 13:52:13 +03:00
Bananymous 044378cfa3 Kernel: Add basic nanosleep, only millisecond percision 2023-09-04 12:59:50 +03:00
Bananymous f1d4d5f995 Kernel: Add basic support for O_NONBLOCK (only for tty) 2023-09-04 12:57:52 +03:00
Bananymous 19d0fb6fcd Kernel: add basic fcntl() with couple of commands and no validation 2023-09-04 12:57:09 +03:00
Bananymous 7933265095 Kernel: Split ext2 implementation to multiple files 2023-09-01 15:10:23 +03:00
Bananymous d810644018 Kernel: Start work on writable ext2 filesystem 2023-08-31 23:40:31 +03:00
Bananymous a7bfc1c2ec Kernel: Add missing ififo() to Inode::Mode 2023-08-31 21:38:31 +03:00
Bananymous 104b2740bc BuildSystem: Add cmake target to validate main partition 2023-08-31 21:37:30 +03:00
Bananymous 65501837b7 Kernel: Stack trace dumping validates pointers before using them 2023-08-31 21:36:23 +03:00
Bananymous 3ed0a54847 Update README.md 2023-08-31 17:54:12 +03:00
Bananymous cbd2519b9a Kernel: better handle kernel errors 2023-08-29 00:13:21 +03:00
Bananymous e8a73f9696 BuildSystem: use -a with rsync 
This allows cmake to not rebuild whole project every time
 2023-08-28 11:38:17 +03:00
Bananymous 1a0d114861 LibC: Don't undef needed values in inttypes.h 2023-08-24 15:48:14 +03:00
Bananymous 5c3497681e BuildSystem: Add USES_TERMINAL when preparing sysroot 
You were not able to enter sudo password on sysroot unpacking,
which caused ninja to hang
 2023-08-23 20:48:40 +03:00
Bananymous b05cf9ef09 BuildSystem: Base sysroot is now distributed as a tar ball 
This allows file and directory permissions work as intended.

cmake is now filled with 'sudo' but with sudo timeout this should be
fine.
 2023-08-23 10:38:21 +03:00
Bananymous a74eb357a1 Shell: hostname is not parsed from /etc/hostname 2023-08-23 10:38:21 +03:00
Bananymous 8eb71084f0 Shell: use process groups more properly 2023-08-22 14:54:50 +03:00
Bananymous ef1077fd7b Kernel: kill() with negative pid actually matches pgid 2023-08-22 14:54:15 +03:00
Bananymous f1ba5c7e0f Kernel: Process keeps track if forked process has called exec*() 2023-08-22 14:53:46 +03:00
Bananymous 97ea4986af Kernel/LibC: implement proper getpgid and setpgid 2023-08-22 14:53:12 +03:00
Bananymous 25c021c15b Kernel: Add function to enumerate processes in session 2023-08-22 14:52:28 +03:00
Bananymous 2bf12a52d1 BAN: increase function size to 5 * sizeof(void*) 2023-08-22 14:52:03 +03:00
Bananymous 6ada36d3cb Shell/init: We now use pgrp instead of pid and init open terminal 2023-08-22 11:37:04 +03:00
Bananymous 42b90ae76c Kernel/LibC: Add {get,set}pgrp() 2023-08-22 11:36:33 +03:00
Bananymous ccc61cb10c Kernel: Barebones implementation sessions and process groups 2023-08-22 11:35:40 +03:00
Bananymous be5b81740e BAN: Add enum class Iteration for for_each loops 2023-08-22 11:30:53 +03:00
Bananymous e7458ca10a BAN: Function call is now const 2023-08-22 11:30:40 +03:00
Bananymous b10168eb1c LibC: make printf buffer only 128 bytes 
Only reason for it to be big is if you want super large zero padding
for your number. This will eventually be handled without the buffer.
 2023-08-18 16:49:27 +03:00
Bananymous 30463c9082 Id: Print username corresponding to uid/euid 
Also print euid and egid if they differ from uid or gid.
 2023-08-18 15:36:51 +03:00
Bananymous dc7391dc89 BuildSystem: only apply stack usage warning to libc 2023-08-17 20:49:52 +03:00
Bananymous eb98d70a0b Shell: command execution and parsing support piped commands 
There is still problems with "blocking" builtin commands (time),
return value, ...
 2023-08-17 12:05:38 +03:00
Bananymous dcd8374b89 LibC: add fileno() and fdopen() 
fdopen() doesn't currently care about mode and will have same mode
as the underlying file descriptor.
 2023-08-17 12:03:59 +03:00
Bananymous 8e4216215e Kernel/LibC: add dup() syscall and function 2023-08-17 12:03:29 +03:00
Bananymous 5bd7099b96 Shell: add basic printf test 2023-08-16 10:49:34 +03:00
Bananymous 9a63d3b2da LibC: printf handles nan and inf 2023-08-16 10:49:34 +03:00
Bananymous bf02330db9 LibC: math.h defines is*() macros and uses builtins for values 2023-08-16 10:41:55 +03:00