Bananymous
4ee759aa3b
Kernel: Implement new abstract MemoryRegion
...
MemoryBackedRegion now inherits from this and is used for private
anonymous mappigs. This will make shared mappings and file backed
mappings much easier to implement.
2023-09-29 16:18:23 +03:00
Bananymous
16eb055737
Kernel: Add some sanity assertions/functions
2023-09-29 02:03:19 +03:00
Bananymous
a34f2e6e0d
Kernel: Use the new on demand ELF structure
...
All executable files are now read from disk and paged on demand.
This was a big rewrite of the old ELF library but in the end
everything seems much cleaner, since all the old functionality was
not actually needed for execution.
I have to do some measurements, but I feel like memory usage dropped
quite a bit after this change.
2023-09-29 02:00:10 +03:00
Bananymous
5b6569f2c9
Kernel: Fix off by one error when calculating pages in range
2023-09-29 01:56:15 +03:00
Bananymous
58f4ed22c4
Kernel: Don't map interrupt stack as userspace accessable
2023-09-28 21:58:24 +03:00
Bananymous
245f58cc3a
Kernel: mmap regions are now demand paged
...
mmap will not actually take any memory unless you use the given
memory.
2023-09-28 21:07:14 +03:00
Bananymous
d9a5e471f5
Kernel: Remove duplicate code in VirtualRange::create_to_vaddr_range
2023-09-28 13:59:49 +03:00
Bananymous
d7ecf94347
Kernel: Reboot will now always succeed
...
If acpi reset fails, we forcefully trigger a triple fault to restart
the system.
2023-09-28 13:53:03 +03:00
Bananymous
6eda65eea6
Kernel/LibC/Userspace: Add SYS_POWEROFF + cli tool
...
You can now shutdown/reboot banan-os with the poweroff cli tool.
Reboot doesn't seem to work on qemu.
2023-09-28 12:36:47 +03:00
Bananymous
d45bf363f1
Kernel: Enter ACPI mode with lai
2023-09-28 12:30:27 +03:00
Bananymous
3b283cb860
Kernel: Make tty overload correct has_data() function
...
This allows snake game to work again :)
2023-09-28 11:54:12 +03:00
Bananymous
cb76f1ea75
Kernel: Add some functionality to disable TTY input/output
...
Userspace programs can call tty_ctrl() to disable/enable tty from
handling input and displaying output.
This API is probably going to change in the future to ioctl calls
but I'm not sure how ioctl is used and what functionality should it
have. I decided to create whole new function and syscall for now.
Next I will expose framebuffer in /dev/fb0 and then I can start work
on graphical environment! :D
2023-09-27 15:44:05 +03:00
Bananymous
459afef89e
Kernel: Disable DiskCache sync messages
2023-09-27 14:12:21 +03:00
Bananymous
1c26a402b0
Kernel: Add missing TRY() to font loading
2023-09-27 00:49:53 +03:00
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
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
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
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
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
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
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
Bananymous
ba7e1b9ca5
Kernel: Add /dev/tty symlink that targets the current tty
2023-09-05 01:07:52 +03:00
Bananymous
f0772e385c
Kernel: Implement basic RamSymlinkInode
2023-09-05 01:07:52 +03:00
Bananymous
3fd94b1acb
Kernel: You can now read serial output from the /dev/ttyS*
2023-09-05 01:07:52 +03:00
Bananymous
93c5755012
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
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
52b9fddfd7
Kernel: Make serial devices to their own class
2023-09-04 14:57:05 +03:00
Bananymous
04cfbca336
Kernel: Add ANSI support for hiding/showing cursor to TTY
2023-09-04 14:30:09 +03:00
Bananymous
9901f95d78
Kernel: Add basic nanosleep, only millisecond percision
2023-09-04 12:59:50 +03:00
Bananymous
b2139c0b1e
Kernel: Add basic support for O_NONBLOCK (only for tty)
2023-09-04 12:57:52 +03:00
Bananymous
6f002c926a
Kernel: add basic fcntl() with couple of commands and no validation
2023-09-04 12:57:09 +03:00
Bananymous
a711462ef4
Kernel: Split ext2 implementation to multiple files
2023-09-01 15:10:23 +03:00
Bananymous
f31c6b847f
Kernel: Start work on writable ext2 filesystem
2023-08-31 23:40:31 +03:00
Bananymous
195ccf4f53
Kernel: Add missing ififo() to Inode::Mode
2023-08-31 21:38:31 +03:00
Bananymous
073edd0b8e
Kernel: Stack trace dumping validates pointers before using them
2023-08-31 21:36:23 +03:00
Bananymous
250789aa20
Kernel: better handle kernel errors
2023-08-29 00:13:21 +03:00
Bananymous
8032824054
BuildSystem: use -a with rsync
...
This allows cmake to not rebuild whole project every time
2023-08-28 11:38:17 +03:00
Bananymous
80e7a89f67
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
38e72019c7
Kernel: kill() with negative pid actually matches pgid
2023-08-22 14:54:15 +03:00
Bananymous
d745fca86a
Kernel: Process keeps track if forked process has called exec*()
2023-08-22 14:53:46 +03:00
Bananymous
60a2185ee6
Kernel/LibC: implement proper getpgid and setpgid
2023-08-22 14:53:12 +03:00
Bananymous
d634fec8dc
Kernel: Add function to enumerate processes in session
2023-08-22 14:52:28 +03:00
Bananymous
c9243f0d1e
Kernel/LibC: Add {get,set}pgrp()
2023-08-22 11:36:33 +03:00
Bananymous
0f6c19a1b7
Kernel: Barebones implementation sessions and process groups
2023-08-22 11:35:40 +03:00
Bananymous
79f3aa5419
Kernel/LibC: add dup() syscall and function
2023-08-17 12:03:29 +03:00
Bananymous
871c792976
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
8480ffe108
Kernel: open() now validates file access mode
2023-08-11 11:53:38 +03:00
Bananymous
e1400f9680
Kernel: Remove unused syscall
2023-08-11 11:43:48 +03:00
Bananymous
6e5bce3c57
Kernel: Zero initialize threads sse_storage
2023-08-11 00:26:43 +03:00
Bananymous
f75adab9d8
Kernel: Move structures in boot.S to .data section
2023-08-11 00:26:12 +03:00
Bananymous
5d0a6e7b08
Kernel: HPET is now used in legacy mode when PIC is forced
2023-08-10 22:01:30 +03:00
Bananymous
b0c8a9cdc4
Kernel: Fix slave PIC
...
we dont mask interrupt 2 in PIC since it corresponds to the
slave PIC. Also cleanup PIC code :)
2023-08-10 21:52:31 +03:00
Bananymous
ebe0adb3b5
Kernel: HPET doesn't use the legacy mapping anymore
2023-08-10 21:08:32 +03:00
Bananymous
4842d5e2b9
Kernel: APIC now uses MMIO namespace functions for mmio
2023-08-10 21:07:23 +03:00
Bananymous
0b8396b1a6
Kernel: IDT now sends EOI for every interrupt
...
EOI is sent before calling the interrupt handler. This should be fine
since all interrupts are processed with interrupts disabled
2023-08-09 09:57:02 +03:00
Bananymous
55ef793a74
Kernel: Validate HPET tick period
2023-08-09 09:50:38 +03:00
Bananymous
96c0ad0d3d
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
6fcb191ca0
Kernel: Add PageTable::Flags::CacheDisable
...
Also fix multiple places where we were using uint8_t as page table
flags instead of PageTable::flags_t which we promoted to uint16_t
while back.
2023-08-06 23:59:30 +03:00
Bananymous
3df97c36e6
Kerne: SystemTimer can now output the current real time
2023-08-04 16:06:47 +03:00
Bananymous
c732297623
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
ca5a097ef5
Kernel: Add function to retrieve boot time as timespec
2023-08-04 16:06:47 +03:00
Bananymous
1f8a5f0ce5
Kernel: F11 now prints current time to debug output
...
This allows better timer percision and system freeze checks
2023-08-04 15:22:51 +03:00
Bananymous
1fa7a1cac4
Kernel: Add basic HPET support to replace PIT if exists
...
This works same way as the PIT implementation; calls Scheduler every
milli second.
2023-08-04 15:22:51 +03:00
Bananymous
ea4a70c3b3
Kernel: Move sleep() implementation to TimerHandler
2023-08-04 15:15:00 +03:00
Bananymous
aa0929614a
Kernel: Add more structures to ACPI
2023-08-04 15:13:47 +03:00
Bananymous
3c31fc9c4b
Kernel: Implement basic MMIO functions
...
This is equivalent to IO.h except for memory mapped io instead of
IO ports
2023-08-04 15:12:29 +03:00
Bananymous
7eb2c140fe
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
659adb89a6
Kernel: Start work on abstracting Timers
2023-08-04 10:29:42 +03:00
Bananymous
dd17124c77
Kernel: Remove unnecessary timer check from Scheduler
2023-08-04 10:29:42 +03:00
Bananymous
643e87a076
Kernel: Threads are deleted sooner and cleaner
...
We now delete threads when
1. it is marked as Terminated and is the current thread
2. it tries to start execution in Terminated state
This allows us to never have thread executing in Terminated state
2023-08-04 10:29:42 +03:00
Bananymous
20eafb4cc4
Kernel: align userspace stacks
...
I was getting #GP on sse instructions
2023-08-03 18:09:48 +03:00
Bananymous
3139391e06
Kernel: Change PageTable API
...
Getting free pages not reserves them, so you don't have to hold
the page table lock :)
2023-08-02 22:09:14 +03:00
Bananymous
64ad752e73
Kernel: PageTable now supports reserved pages
...
You can now map pages as reserved, so that they will not be given
from get_free_page() or get_free_contiguous_pages().
2023-08-01 16:35:54 +03:00
Bananymous
a78a7ed156
Kernel: Cleanup returns from any kind on interrupts
2023-08-01 14:23:50 +03:00
Bananymous
2a851b52f1
BuildSystem: Edit build flags regarding sse and warnings
2023-07-31 22:31:17 +03:00
Bananymous
b245a55ea0
Kernel: store/load sse/mmx/fpu state on isr/irq/syscall
...
I haven't tested this yet but should be fine. This will be optimized
to only save state from threads that are using it
2023-07-31 22:28:57 +03:00
Bananymous
c4f6c859c1
Kernel: Generally improve signals
2023-07-31 22:28:18 +03:00
Bananymous
1a6100f083
Kernel: Cleanup signal trampoline
2023-07-30 15:58:35 +03:00
Bananymous
de927b6b05
Kernel: Remove is_in_syscall from Thread
2023-07-30 14:49:51 +03:00
Bananymous
1d7795e22c
Kernel: Hardware exceptions now sends signals to userspace
2023-07-30 14:34:15 +03:00
Bananymous
abe8810d47
Kernel: raise() now force sends signal
2023-07-30 14:17:07 +03:00
Bananymous
acf125c853
Kernel: Signals are not queued anymore
...
Posix doesn't require signal queing if you don't use sigqueue() which
we don't support. Process also has its own pending signal mask.
2023-07-29 16:54:31 +03:00
Bananymous
9279bbbd19
Kernel: TTY now sends SIGINT on ^C to foreground process
2023-07-28 18:10:09 +03:00
Bananymous
9fd9a8b5b1
Kernel: Mark reading section from StorageDevice as terminate critical
2023-07-28 18:09:35 +03:00
Bananymous
3c6be319b1
Kernel: Restructure process and thread termination
...
When we want to kill a process, we mark its threads as Terminating
or Terminated. If the thread is in critical section that has to be
finished, it will be in Terminating state until done. Once Scheduler
is trying to execute Terminated thread it will instead delete it.
Once processes last thread is marked Terminated, the processes will
turn it into a cleanup thread, that will allow blocks and memory
cleanup to be done.
2023-07-28 18:06:20 +03:00
Bananymous
104894c0c7
Kernel: Rewrite DiskCache
...
We now cache only clean pages since I don't want to think about
syncing the disk later.
2023-07-27 22:22:39 +03:00
Bananymous
2f52001c6d
Kernel: Locks allow locking after locker is invalid
...
SpinLock and RecursiveSpinLock will now allow locking after the initial
locker is invalid. This allows us to kill threads even if they are holding
internal locks
2023-07-27 18:52:51 +03:00
Bananymous
f609170a6a
Kernel: DiskCache uses are now done without interrupts
...
This allows disk cache to not be invalid state after partial read/write
2023-07-27 18:52:51 +03:00
Bananymous
9f75b04714
Kernel: Scheduler can now check if tid is valid
...
Tid can become invalid if the thread is already terminated
2023-07-27 18:34:06 +03:00
Bananymous
7b4a2fe3d1
Kernel: Process::exit() unblocks the whole lock before blocking
2023-07-24 22:29:59 +03:00
Bananymous
f6ee4b3496
Kernel: Implement SYS_GET_PID and SYS_TCSETPGID
...
we don't have consept of process groups yet
2023-07-24 22:29:59 +03:00
Bananymous
1ef0534b69
Kernel: TTY now stores foreground process pid
...
this will be process pgid when we have process groups
2023-07-24 22:29:59 +03:00
Bananymous
b9dd1895bb
Kernel: add Thread::queue_signal()
2023-07-24 22:26:10 +03:00
Bananymous
be47743dfa
Kernel: Scheduler can now block threads based on tid
2023-07-24 22:24:21 +03:00
Bananymous
57798e5d76
Kernel: remove Semaphore::is_blocked
...
this will not mean anything after semaphores can spuriously wake up
2023-07-24 22:23:13 +03:00
Bananymous
cd64c1cfec
Kernel: add is_tty() to inode
2023-07-24 22:19:59 +03:00
Bananymous
f76d921e25
Kernel: you can now ask process if it is userspace process
2023-07-23 18:54:10 +03:00
Bananymous
a2bf474013
Kernel: OpenFileDesctiptor can now return inode of fd
2023-07-23 18:52:33 +03:00
Bananymous
9729e5a05b
Kernel: Change signal kernel API
...
return rsp and rip are now stored per thread
2023-07-23 18:33:10 +03:00
Bananymous
2dce0a0415
Kernel: Userspace signal handlers are now called one at a time
...
I added a syscall for telling the kernel when signal execution has
finished. We should send a random hash or id to the signal trampoline
that we would include in the syscall, so validity of signal exit can
be confirmed.
2023-07-23 13:34:53 +03:00
Bananymous
d560137ae6
Kernel/LibC: add SYS_SIGNAL/signal()
2023-07-21 20:08:13 +03:00
Bananymous
c12f4fb40f
Kernel: Make signals more POSIX
2023-07-21 20:01:12 +03:00
Bananymous
10169d773d
Kernel/LibC: Add SYS_KILL/kill()
2023-07-21 19:27:38 +03:00
Bananymous
b78596dcf4
Kernel: Scheduler now sends queued signals
2023-07-21 19:27:10 +03:00
Bananymous
40f7c6b8fa
Kernel: Make signals thread specific
2023-07-21 19:00:59 +03:00
Bananymous
8063700d7b
Kernel: add default signal actions
2023-07-21 18:02:35 +03:00
Bananymous
70f89ed1fc
BuildSystem: Strip kernel. We will add the map once we use it
2023-07-21 15:47:31 +03:00
Bananymous
c2cf98e32f
Kernel/LibC: Add bareboness signals
...
You can now call raise() to raise a signal. Signal handlers are
not yet supported, but the handling works :)
2023-07-21 15:45:02 +03:00
Bananymous
a1db032ba9
Kernel: kernel memory takes now full pml4e
...
This allows flags to work properly
2023-07-21 13:47:05 +03:00
Bananymous
5babd7b4f2
Kernel: remove PAGE_FLAGS_MASK as that was not correct anymore
...
After I added NXE bit, the flags mask is no longer valid
2023-07-21 12:01:50 +03:00
Bananymous
c0029a2fa2
Kernel: Don't map kernel executable memory as writable
2023-07-21 11:17:39 +03:00
Bananymous
4e35b8b49d
Kernel: Syscalls now get the interrupt stack
2023-07-21 11:04:16 +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
Bananymous
94af856db0
Kernel: cleanup sys_exec()
...
We now scope everyting so desctructors get called
2023-07-19 23:20:39 +03:00
Bananymous
bf5d74b8bc
Kernel: fix memory leak in PageTable
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PageTable used to leak 2 pages on creation and other two on deletion
2023-07-19 23:17:39 +03:00
Bananymous
fd9210ba9e
Kernel: FixedWidthAllocator creation can now fail
2023-07-19 18:07:24 +03:00
Bananymous
66d9260257
Kernel: VirtualRange creation can fail
2023-07-19 17:56:26 +03:00
Bananymous
5d2bfc858e
Kernel: SYS_FORK can now fail instead of panicing on error
2023-07-19 17:47:12 +03:00
Bananymous
8b34880064
Kernel: Fix bug which made bochs unbootable
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We could not boot if ATABus did not have valid primary device.
2023-07-13 15:53:09 +03:00
Bananymous
98c698d9ec
Kernel: Enable global bit on kernel pages
2023-07-13 15:23:25 +03:00
Bananymous
9ea2c1d932
Kernel: Support execute disable bit
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We will now map executable memory explicitly as executable.
2023-07-13 14:28:53 +03:00
Bananymous
297e65f19a
Kernel: CPUID can detect wether cpu supports nxe bit
2023-07-13 14:24:58 +03:00
Bananymous
65559a3e44
Kernel: Fix multiple bugs with terminal
2023-07-13 13:09:52 +03:00
Bananymous
c3a71e94a9
Kernel: Fix ATA disk and partition numbering
2023-07-13 12:12:47 +03:00
Bananymous
00409ffa60
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
9bcfb34524
Kernel: Rewrite whole device structure
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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
ee4ef6638c
Kenrel: RamInode now implements truncate()
2023-07-10 16:07:09 +03:00
Bananymous
0910958c04
Kernel: OpenFileDescriptors can now store more than 8 bits of flags
2023-07-10 16:06:36 +03:00
Bananymous
d6408bcf17
Kernel: add O_TRUNC
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this is not supported by anything yet
2023-07-10 15:48:18 +03:00
Bananymous
178fc00905
Kernel: creat() mode now has to be access mode
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We provide the S_IFREG in creat
2023-07-10 15:34:41 +03:00
Bananymous
89d4fa4d9b
Kernel: Ext2 fill now return ENOTSUP on write
...
We used to crash the kernel
2023-07-10 15:34:25 +03:00
Bananymous
46e1419e70
Kernel: O_APPEND is now supported
2023-07-10 15:11:27 +03:00
Bananymous
f7c4bc908e
Kernel: open() and openat() now take mode as parameter
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O_CREAT now tries to create file if O_CREAT is specified
2023-07-10 15:08:54 +03:00
Bananymous
a0ecbed726
Kernel: You can now read/write to RamInodes
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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
74fc0aa308
Kernel: Inode::create_file() now takes uid and gid as parameters
2023-07-10 13:32:10 +03:00
Bananymous
d5f0448e48
Kernel: start work on ram file system
2023-07-10 13:26:14 +03:00
Bananymous
d713f252aa
Kenrel: Fix inode comparison
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We should not compare rdevs
2023-07-10 11:48:11 +03:00
Bananymous
5ec2d85081
Kernel: Inode rename directory functions
2023-07-10 11:48:11 +03:00
Bananymous
0d132ee518
Kernel: Mark Ext2 classes final
2023-07-10 11:48:11 +03:00
Bananymous
80c8d52dc5
Kernel: add more functionality to PCI
2023-07-09 23:04:11 +03:00
Bananymous
b6c4a2dbf1
Kernel: Edit lock scopes and make string copy able to fail
2023-07-07 23:12:19 +03:00
Bananymous
a2f5ad7bed
Kernel: Move open file descriptors to their own class
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This simplifies code a lot :)
2023-07-07 23:11:37 +03:00
Bananymous
07fec6e211
Kernel/LibC: add basic dup2
2023-07-06 23:17:54 +03:00
Bananymous
4cd72992c8
Kernel/LibC: Add basic pipe() syscall and command
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You can now create pipes :)
2023-07-06 22:16:26 +03:00
Bananymous
5a8eb51968
Kernel: TTY now unblocks semaphore after read
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This allows concurrent reads not fully reading the buffer not block
indefinately.
2023-07-06 21:32:34 +03:00
Bananymous
a74422281f
Kernel: Add O_CLOEXEC
2023-07-06 20:00:33 +03:00
Bananymous
a45f9ee76b
Kernel: Remove spammy process/thread exit printing
2023-07-06 10:34:46 +03:00
Bananymous
1fb305fa45
Kernel/LibC: add clock_gettime() for CLOCK_MONOTONIC
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This gets the number of milliseconds since boot
2023-07-06 00:38:29 +03:00
Bananymous
4086d7c3be
Kernel: rework the whole PageTable structure
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We now have page table structure for kernel memory which is shared
between all processes.
2023-07-05 23:41:35 +03:00
Bananymous
7d254c26bc
Kernel: Rewrite and optimize DiskCache
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DiskCache now consists of PageCaches which are caches of contiguous
sectors. This allows the disk cache to be ordered and faster traversal.
We seem to have a problem somewhere during reading. The stack gets
corrupted.
2023-06-19 10:31:47 +03:00
Bananymous
9a7b2587af
Kernel: kmalloc has now somewhat dynamic storage
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Allocations bigger than PAGE_SIZE and those not forced to be identity
mapped are now done on a GeneralAllocator. This allows us to use kmalloc
for big allocations; bigger than the fixed 1 MiB storage.
This is still a hack and the whole kmalloc will have to be rewritten at
some point, but for now this does the job :D
2023-06-18 23:27:00 +03:00
Bananymous
09c824b90e
Kernel: Add GeneralAllocator::paddr_of
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Yoy can now query physical address of a virtual address for general
allocator allocation
2023-06-18 23:25:51 +03:00
Bananymous
57e59d998f
Kernel: Add enum for ISR name to number
2023-06-18 23:24:27 +03:00
Bananymous
44fb3945df
Kernel: General allocator takes first valid vaddr as parameter
2023-06-17 22:23:34 +03:00
Bananymous
95c4e608de
Kernel: Move print during boot
2023-06-12 23:45:36 +03:00
Bananymous
5dcc53bcf2
Kernel: Make disk IO blocking thread safe
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This was causing a lot of deadlocks on vms without kvm accel
2023-06-12 18:57:47 +03:00
Bananymous
23543b15ca
Kernel: Rework syscall calling
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I removed the intermediate function when calling syscalls. Now syscall
handler calls the current process automatically. Only exception is
sys_fork, since it needs a assembly trampoline for the new thread.
2023-06-12 14:16:48 +03:00
Bananymous
2253c45feb
Kernel: Remove Shell from kernel
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This is now obsolete since we have a userspace Shell.
2023-06-12 02:04:52 +03:00
Bananymous
f09b82c4b5
Kernel/LibC: add SYS_{SET,GET}_PWD and chdir, getpwd
2023-06-12 02:02:52 +03:00
Bananymous
7aeb8e4d36
Kernel: allocate thread stacks from 0x300000 onwards
...
I had a problem where thread stack was overlapping with elf loading
2023-06-12 01:02:19 +03:00
Bananymous
58ec4d6a31
Kernel: Fix bug in elf loading
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We were allocating one extra page
2023-06-12 00:59:19 +03:00
Bananymous
11b68f6a53
Kernel: Add SYS_GET_{,E}{UID,GID}
2023-06-11 22:37:00 +03:00
Bananymous
3fe67e4882
Kernel: Add syscalls for set{,e,re}{uid,gid}
2023-06-11 22:37:00 +03:00
Bananymous
78536f9678
Kernel/Userspace: Add basic init process
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This process parses /etc/passwd and promps login screen.
When an username is entered, it will launch that users shell
2023-06-11 22:37:00 +03:00
Bananymous
c7ec19c25c
Kernel: Add basic Credentials for the system
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Now filesystem access/open, etc confirm that you have access for rwxs
2023-06-11 20:06:06 +03:00
Bananymous
3181ea7b4d
Kernel: GeneralAllocator and FixedWidth allocator invalidate TLB caches
...
We were getting random exceptions when reallocating same addressess and
this fixes that problem :)
2023-06-11 15:57:48 +03:00
Bananymous
83a6e6f637
LibC: Reorder some syscalls
2023-06-11 03:29:22 +03:00