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122 Commits

Author SHA1 Message Date
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 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 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 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 8c282a5d83 Kernel: O_SEARCH doesn't require any permissions 
Except read permissions for all directories in the path

This allows us to stat e.g. device files for which we don't have
the permissions.
 2023-08-11 12:26:07 +03:00
Bananymous e74fdbc55b Kernel: Remove get_unix_timestamp from SystemTimer 
Kernel now uses the percise real_time() and time_since_boot()
 2023-08-09 08:57:50 +03:00
Bananymous bc0e1fa898 Kernel: Rename TimerHandler to SystemTimer 
I changed SystemTimer to only handle the "best" supported timer
it can initialize.
 2023-08-04 16:06:47 +03:00
Bananymous 9363c1cdaf Kernel: Move RTC to Timer directory 
PIT ms counter seems to be off by multiple seconds/minute. I will
be probably changing to HPET for system time
 2023-08-04 11:12:16 +03:00
Bananymous 198e6d7cf6 Kernel: Start work on abstracting Timers 2023-08-04 10:29:42 +03:00
Bananymous f8a1a10897 Kernel: add NullDevice to /dev/null 2023-07-20 00:06:22 +03:00
Bananymous 72041a52e8 Kernel: Ext2Inode::create_file actually sets the inode data 
We used to just create inode without touching its memory.
 2023-07-13 10:20:56 +03:00
Bananymous 74c79c7eff Kernel: Rewrite whole device structure 
We now have DevFileSystem which is derived from RamFileSystem. All
devices are RamInodes. We don't have separate DeviceManager anymore.
To iterate over devices, you can loop througn every inode in devfs.
 2023-07-10 23:17:14 +03:00
Bananymous 5a5656b2d3 Kenrel: RamInode now implements truncate() 2023-07-10 16:07:09 +03:00
Bananymous 1e173c178d Kernel: Ext2 fill now return ENOTSUP on write 
We used to crash the kernel
 2023-07-10 15:34:25 +03:00
Bananymous 45789fda08 Kernel: You can now read/write to RamInodes 
RamFS should be stored on physical pages and not in kmalloc, but
that will be implemented later :)
 2023-07-10 14:09:35 +03:00
Bananymous 3b5bc63d1b Kernel: Inode::create_file() now takes uid and gid as parameters 2023-07-10 13:32:10 +03:00
Bananymous f1089e2b8a Kernel: start work on ram file system 2023-07-10 13:26:14 +03:00
Bananymous 583504ebe0 Kernel: Inode rename directory functions 2023-07-10 11:48:11 +03:00
Bananymous 4eb95c963d Kernel/LibC: Add basic pipe() syscall and command 
You can now create pipes :)
 2023-07-06 22:16:26 +03:00
Bananymous ef4ebaa969 Kernel: Add syscalls for set{,e,re}{uid,gid} 2023-06-11 22:37:00 +03:00
Bananymous c62e820bcf Kernel: Add basic Credentials for the system 
Now filesystem access/open, etc confirm that you have access for rwxs
 2023-06-11 20:06:06 +03:00
Bananymous e209ca7c82 Kernel: Rewrite directory listing so it can be integrated to libc 2023-06-11 00:17:18 +03:00
Bananymous a4cb5d8360 Kernel: Inode/Device detection is done with overridden bool functions 2023-06-03 13:28:15 +03:00
Bananymous 633cb4f282 Kernel: VFS now has max link depth of 100 2023-06-02 12:50:40 +03:00
Bananymous 4d4d0e26a9 Kernel: Symlinks are now working 
We still have to implement loop or depth detection
 2023-06-02 11:43:46 +03:00
Bananymous 232fdcb82c Kernel: add basic support for symlinks 2023-06-01 00:24:45 +03:00
Bananymous 8d6db168d6 Kernel: remove message from BAN::Error 
We don't store the error message anymore in BAN::Error.
Instead we store a error code that can be mapped into a string.
This allows BAN::Error to only take 4 bytes instead of 128.

We should also make some kernel initialization just panic instead
of returning errors since they are required for succesfull boot
anyway.
 2023-04-11 23:25:21 +03:00
Bananymous 461a5774f8 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 79090c2648 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 7a6b1c8e47 Kernel: Fix traversing back from mount points 2023-04-01 01:54:35 +03:00
Bananymous 5da801d12b Kernel: fix ext2 failed creation memory leak 2023-04-01 00:22:03 +03:00
Bananymous 26d9a3e253 Kernel: Move DeviceManager to its own file 2023-03-30 22:39:45 +03:00
Bananymous eef3631a5a 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 2995a36942 Kernel: root partition is now passed from the commandline 2023-03-30 18:46:19 +03:00
Bananymous 3e8ab8271d Kernel: Shell can now mount partitions 2023-03-30 15:06:41 +03:00
Bananymous 5b3a00c64f Kernel: Inode::Mode is now a struct so we can have functions in it 2023-03-30 14:41:15 +03:00
Bananymous 0ce9fd8597 Kernel: StorageDevices and Controllers are now devices 2023-03-30 14:22:15 +03:00
Bananymous 5d5487315f Kernel: Remove the mount test from VFS 2023-03-30 11:43:24 +03:00
Bananymous 06ce1f0667 Kernel: Rewrite mounting code 2023-03-29 21:34:48 +03:00
Bananymous 1fb8c211f0 Kernel: Move Partition out of StorageDevice and rename functions 2023-03-29 13:23:01 +03:00
Bananymous a24c2d9be2 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 f8a2c60c8d Kernel/BAN: move unix time conversion to BAN and add stat to Shell 2023-03-27 00:49:58 +03:00
Bananymous 770f7716a0 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 7d2ab53baa 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 2152b8b95f 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 4fd21bc303 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 6ed9651176 Kernel: StorageDevice and Ext2 "support" writing 2023-03-23 13:04:13 +02:00
Bananymous a8e3ee6f19 Kernel: Ext2 directory functions now fail on invalid blocks 
Invalid blocks should only happen while writing to a file and
I think in that case we should just bail out instead of giving
you incomlete inode list or search result.
 2023-03-22 01:55:57 +02:00
Bananymous 9b500842a0 Kernel: Ext2 can now read from non-block-size aligned offsets 2023-03-21 19:19:17 +02:00
Bananymous b21348379f 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 633055293e Kernel: Remove for_each_block from Ext2 2023-03-21 18:14:02 +02:00
Bananymous 39b560fde3 Kernel: Add basic mounting to VFS. 2023-03-19 05:51:25 +02:00
Bananymous 76d5364a55 Kernel: Add comparison operator for inodes 2023-03-19 03:34:23 +02:00
Bananymous 8236598f9d Kernel: Optimize Ext2 disk reads 
We used to read whole file until we reached the asked offset.
Now we can calculate the appropriate block and read just the asked data.
 2023-03-18 03:47:59 +02:00
Bananymous 1a26a318a4 Kernel: Rework filesystem reading 
We now read from a filesystem to user provided buffer.

Read sizes are determined by read call.

You should now get file descriptors and do reading through Process::current()
 2023-03-17 21:18:41 +02:00
Bananymous 1f2ceeb329 Kernel: VFS caches currently open inodes 2023-03-16 15:31:33 +02:00
Bananymous c012822d49 BAN: Rename StringView suffix from _sv to sv 2023-03-16 12:15:16 +02:00
Bananymous 8940ff8002 Kernel: You don't have to check whether VFS is initialized or not 
VFS now returns Error when attempting to traverse inodes if it did
not find root partition
 2023-03-09 02:31:24 +02:00
Bananymous fc58baf54d Kernel: if VFS initialization does not find root, we fail 2023-03-09 02:17:42 +02:00
Bananymous 7458f68c38 BAN: Error can now be constructed from c_string or format string 
If the resulting string would overflow, we just truncate it to fit
the error message buffer (128) bytes
 2023-03-08 17:05:37 +02:00
Bananymous 23b3028e15 Kernel: Rename RefCounted -> RefPtr and implement RefCounted 2023-03-08 03:26:25 +02:00
Bananymous a9acf1f6dc Kernel: PCIDevice is now class with getters and constructor 2023-03-08 02:41:44 +02:00
Bananymous 52aa98ba25 Kernel+LibC: Add some errno codes 
Kernel now returns ENOMEM and other errnos, so we dont have to write
error messages
 2023-03-02 21:10:44 +02:00
Bananymous 90a7268e5a BAN: Rewrite RefCounted to return ErrorOr 2023-03-02 12:30:11 +02:00
Bananymous ee5d02aa70 Kernel: Rewrite basically all current disk io stuff 
This is a big commit that was kinda hard to split to smaller ones.

Essentially we now look at all the mass storage devices from PCI
and initialize (P)ATA devices. This doesn't provide any more functionality
but better abstractions and everything doesn't have to be on its old
default port that might be different for modern computers.
 2023-02-26 03:00:29 +02:00
Bananymous 5d31e89574 Kernel: Update ErrorOr API and add path find to VFS 
These two are done on the same commit since Changes to Shell were
annoying to make work with only one change
 2023-02-22 01:23:11 +02:00
Bananymous 038379274e Kernel: Inode can now return full mode value 
Kernel::Inode::Mode is an union of bitmasked fields for every
possible bit
 2023-02-20 21:39:24 +02:00
Bananymous efaca469ee Kernel: Ext2Inode now supports indirect blocks through for_each_block() 2023-02-20 10:25:15 +02:00
Bananymous 80006ea137 Kernel: Initial work on filesystem 
We support now ext2 directory listing. File reading is not yet supported.
 2023-02-20 01:46:00 +02:00