Commit Graph

1577 Commits

Author SHA1 Message Date
Bananymous 1e6930a3bc 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 11db49e2d3 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 c33e658f98 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 22252cfcf0 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 976114fde1 Kernel: Print more detailed output on ISR 2023-09-25 20:33:07 +03:00
Bananymous 9d55cf1d80 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 ef68e12125 BAN: Implement basic WeakPtr
This can be constructed from classes that inherit from Weakable
2023-09-25 19:43:10 +03:00
Bananymous 669b2ace4e 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 0e67c6318b 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 959fb64752 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 ffa80d0466 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 e7ca83ecb2 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 f6261e5dc9 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 d1bbbf48f6 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 3ba15b41a3 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 7a7c5e433e 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 6bb2c80bdd 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 af4af1cae9 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 b9c779ff7e BuildSystem: Add cmake target for debugging qemu 2023-09-22 17:20:35 +03:00
Bananymous 2a469241b2 BAN: Fix LinkedList::pop_back() 2023-09-22 17:20:35 +03:00
Bananymous 83b165ebb0 Kernel: Add constexpr conditional debug prints 2023-09-22 17:20:35 +03:00
Bananymous c5f9f0c307 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 9d827037ca Kernel: Fix timer includes 2023-09-22 17:20:35 +03:00
Bananymous 58506c5bd1 Kernel: Add config read/write api to PCI 2023-09-22 17:20:35 +03:00
Bananymous dd0b8c4140 Kernel: Add pointer validation API to page table 2023-09-22 17:20:35 +03:00
Bananymous d1183f0bf6 General: remove linecount.sh 2023-09-22 17:20:35 +03:00
Bananymous 11717f90c1 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 a740bf8df4 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 63dc2b6aa6 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 eee0537053 Kernel: Writes to disk are not synchronous anymore
Implement "proper" DiskCache syncing
2023-09-11 01:25:16 +03:00
Bananymous 7ec860a3d4 Kernel: Print stack trace on isr 2023-09-11 01:20:55 +03:00
Bananymous 9b9a6b2cfc Kernel: Fix ext2 file write 2023-09-11 01:20:39 +03:00
Bananymous f178fa6d5b 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 9ebf29991d Kernel: Add basic dd command
This only supports if, of, bs, count and status=progress
2023-09-10 01:19:47 +03:00
Bananymous 8fb5f97a18 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 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 dd9af56e21 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 39a5c52088 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 660f7cbfeb Kernel: Ext2 directories can allocate new blocks if needed 2023-09-08 10:29:26 +03:00
Bananymous 1abf54d652 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 3750d29b2b Kernel: Fix possible out-of-bounds disk access in ext2 2023-09-08 02:42:53 +03:00
Bananymous e75522a005 BuildSystem: Cleanup disk image creation 2023-09-08 02:41:39 +03:00
Bananymous 5972c73950 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 41757b5f6c 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 c33c7f8b3b 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 4648f6718e Kernel: Cleanup TTY::read() 2023-09-07 15:27:21 +03:00
Bananymous b30af0edca 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 5e1725abb2 Kernel: Remove bitmap debug printing from ext2 inode allocation 2023-09-06 01:25:09 +03:00
Bananymous 6ad2f23259 Kernel: Correct inode links count 2023-09-05 14:46:56 +03:00