Commit Graph

184 Commits

Author SHA1 Message Date
Bananymous f281543255 Kernel: Add tty to process and make termios modifiable 2023-04-05 02:53:28 +03:00
Bananymous 4f522d337a Kernel: Add partial support for shell
We don't handle arrow keys, and the tty does not know how to clear
the screeen :D
2023-04-05 01:30:58 +03:00
Bananymous af0979ec32 Kernel: Process can now initialize stdio
This allows the use of the fds STD{IN,OUT,ERR}_FILENO
2023-04-05 01:10:25 +03:00
Bananymous 7f95444bb5 Kernel: Start work on making tty a file
TTY is now a file that you can read from/write to. I still have
to port shell to use this new interface
2023-04-05 00:56:09 +03:00
Bananymous 783842bac2 Kernel: add virtual write function to inode 2023-04-03 20:29:07 +03:00
Bananymous ee1f3623ce Kernel: Fix typo 2023-04-03 19:56:55 +03:00
Bananymous b87dae7e7c Kernel: Device dev and rdev number is done more properly
Also hd* partitions are now 1 indexed instead of 0
2023-04-03 11:43:16 +03:00
Bananymous c936aac777 Kernel: Optimize scheduler idling
Now after each interrupt we will ask the scheduler to reschedule
if the current thread is the idle thread. This allows semaphore
unblocking to be practically instant when there is only one thread
executing.

Now disk reading is back to ~3 MB/s for single threaded process
2023-04-03 01:51:05 +03:00
Bananymous 46d65471d9 Kernel: ATA now uses irqs instead of polling
Reading is now much slower at ~500 kB/s it was around 3 MB/s.
This is probably mostly due semaphore blocking taking atleast
until next reschedule (1 ms itervals). This will be a problem
as long as we are using only single processor.

I could try to use {READ/WRITE}_MULTIPLE commands, but since
most of the disk reads are 2 sectors (inode block size) this
will at most double the speed.

Most efficient speed up would of course be caching disk access
data and inodes overall.
2023-04-03 00:03:38 +03:00
Bananymous dcc174b62e Kernel: Move ATADevice to its own file from ATAController
The API is kinda weird since device reads/writes go from
ATADevice -> ATAController -> ATADevice
but this is for now atleast necessary since ATAController has(?)
to keep all devices from using the disks at the same time
2023-04-02 18:26:19 +03:00
Bananymous cbb0f6be9a Kernel: cleanup includes
I went quickly went through all files since I found some weird
includes :D
2023-04-01 02:14:49 +03:00
Bananymous a60f8098ee Kernel: Fix traversing back from mount points 2023-04-01 01:54:35 +03:00
Bananymous 8b5d8d9f8a Kernel: Process gets absolute paths for mount 2023-04-01 00:30:11 +03:00
Bananymous db65cfeb8a Kernel: Cleanup ATA device initialization 2023-03-31 00:58:57 +03:00
Bananymous a3ba6da6f3 Kernel: Move DeviceManager to its own file 2023-03-30 22:39:45 +03:00
Bananymous b048630e5b Kernel: Improve locking in Process, VFS and ATAController
We used to block on all process access. This meant that shell
reading the keyboard input would block all VFS access making disk
accesses practically impossible. We now block only when it is
necessary :)
2023-03-30 22:02:16 +03:00
Bananymous dcee92a6bc Kernel: Thread is no longer RefCounted
This makes developement with Scheduler much easier against compiler
optimizations. I could now remove the pragma GCC optimize stuff.
2023-03-30 19:16:51 +03:00
Bananymous c2e3b422cc Kernel: Add Semaphore to block threads 2023-03-30 18:46:33 +03:00
Bananymous d4c03d3939 Kernel: root partition is now passed from the commandline 2023-03-30 18:46:19 +03:00
Bananymous 8e68d2e3ea Kernel: Shell can now mount partitions 2023-03-30 15:06:41 +03:00
Bananymous 30c33b55e3 Kernel: Inode::Mode is now a struct so we can have functions in it 2023-03-30 14:41:15 +03:00
Bananymous e2791e5260 Kernel: StorageDevices and Controllers are now devices 2023-03-30 14:22:15 +03:00
Bananymous 88a8bd659d Kernel: Add IFBLK, IFLNK, IFSOCK to Inode::Mode 2023-03-30 13:15:46 +03:00
Bananymous f9cc114907 Kernel: All devices have atime, mtime, ctime at their creation 2023-03-30 13:15:46 +03:00
Bananymous 9a4d603a62 Kernel: Remove the mount test from VFS 2023-03-30 11:43:24 +03:00
Bananymous 78ea4b2207 Kernel: fix stat command and device numbers 2023-03-30 10:43:08 +03:00
Bananymous ab3cdea548 Kernel: Rewrite mounting code 2023-03-29 21:34:48 +03:00
Bananymous dd84a2175f Kernel: Move Partition out of StorageDevice and rename functions 2023-03-29 13:23:01 +03:00
Bananymous 62fb233eb1 Kernel: DeviceManager is now a 'FileSystem' so it can expose devices
Shell reads keyboard through /dev/input :)
2023-03-29 11:50:46 +03:00
Bananymous 16d9d29971 Kernel: Remove obsolete KeyboardLayout/
This was used by the old input system. Currently keyboard layout is
hardcoded to finnish. But it will be reworked as something read from
the filesystem
2023-03-29 03:09:14 +03:00
Bananymous fa8e921ee8 Kernel: Rework the whole input system
We now use Device abstraction that will allow us to provide devices
to userspace through /dev. Currently Shell reads from first and only
device (it being PS/2 Keyboard).
2023-03-29 03:05:16 +03:00
Bananymous c7286396d8 Kernel: Move ACPI to its own file 2023-03-27 17:30:45 +03:00
Bananymous 666051fd34 Kernel/BAN: move unix time conversion to BAN and add stat to Shell 2023-03-27 00:49:58 +03:00
Bananymous e55860eb6b Kernel: Rework processes and VFS so we don't expose inodes
Everything is now done through a file descriptor.
2023-03-26 04:30:57 +03:00
Bananymous 1fade1aa9e Kernel: Process::working_directory() is now thread safe
I realized you cannot return a stirng view and it to be thread safe
2023-03-24 01:46:25 +02:00
Bananymous 814f0b215d Kernel: Create RecursiveSpinLock and add it to Process
We now lock every function within Proccess, just to be sure.
Recursive lock allows us to use lock from the same thread even if
we already have the spinlock locked
2023-03-24 01:32:35 +02:00
Bananymous 5fd26b4ea8 Kernel: Lock process functions instead of the ata controller
Process has to use locks at least on some functions so multithreaded
disk io is safe. This seemed to fix corrupted reads from disk
2023-03-24 01:17:39 +02:00
Bananymous e5eab8bae4 Kernel: Ext2FS now does allocations better
We only have to allocate at the beginning of the all functions and
can properly exit before any disk reads if we run out of memory.

This makes development little bit 'harder' since the {read,write}_block
user must allocate a buffer of atleast block_size bytes.

I also made disk access to cause kernel panic on error since the error
handling during file write is something I don't want to think now.
The filesystem can easily corrupt so, I feel like when disk io starts
to fail I'll come back to this.
2023-03-23 23:22:31 +02:00
Bananymous 75c4f35e85 Kernel: Add possibiliity to create empty files on Ext2
Big rewrite for Ext2 for more easy and optimized code
2023-03-23 22:26:06 +02:00
Bananymous 633414bd20 Kernel: Remove block group descriptor cache from ext2fs
This will make improving the fs easier since we need to only update
the values on the disk
2023-03-23 18:52:58 +02:00
Bananymous 7ca6cd61be Kernel: Move get_unix_time to RTC namespace 2023-03-23 18:14:51 +02:00
Bananymous 3ef72e8a7b BAN: Modify Span constructors to keep constness correctly 2023-03-23 14:26:03 +02:00
Bananymous 9b56801c3d Kernel: StorageDevice and Ext2 "support" writing 2023-03-23 13:04:13 +02:00
Bananymous 74949401bd Kernel: Cleanup GPT parsing code 2023-03-23 11:13:14 +02:00
Bananymous 072954480d Kernel: Remove obsolete Ext2FS::ext2_root_inode()
This was not used by anyone and the cast was wrong anyway
2023-03-21 18:19:48 +02:00
Bananymous 3652d11059 Kernel: Remove for_each_block from Ext2 2023-03-21 18:14:02 +02:00
Bananymous f9ae1f0023 Kernel: Fix PC Screen font parsing
I had misread the format and the parsing code was incorrect. I also
changed fonts to store unicode codepoints as 32 bit integers, so
every character can be represented
2023-03-20 14:52:42 +02:00
Bananymous 896b4c280c Kernel: Font parsing uses Spans now 2023-03-20 13:35:54 +02:00
Bananymous e4bcd98904 Kernel: Add basic mounting to VFS. 2023-03-19 05:51:25 +02:00
Bananymous 3570764448 Kernel: Add comparison operator for inodes 2023-03-19 03:34:23 +02:00