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805 Commits

Author SHA1 Message Date
Bananymous 8fd0162393 Kernel: Rewrite x86_64 page tables to use HHDM instead of kmalloc 
This allows page tables to not crash the kernel once kmalloc runs out of
its (limited) static memory.
 2024-10-14 11:40:30 +03:00
Bananymous f0b18da881 Kernel: Add kmalloc helper APIs 2024-10-14 11:39:04 +03:00
Bananymous 5f63ea8f8a Kernel: Add CPUID check for 1 GiB page support 2024-10-14 11:38:03 +03:00
Bananymous 2b43569927 Kernel: Use enums in boot info instead of magic values 2024-10-14 11:36:51 +03:00
Bananymous 55fbd09e45 Kernel: Rewrite physical memory allocation with PageTable::fast_pages 2024-10-14 11:32:54 +03:00
Bananymous 2d11ce9669 Kernel: Fix interrupt system 
I had not understood how MSIs work and I was unnecessarily routing them
through IOAPIC. This is not necessary and should not be done :D

Also MSIs were reserving interrupts that IOAPIC was capable of
generating. Now IOAPIC and MSIs use different set of interrupts so
IOAPIC can use more interrupts if needed.
 2024-09-27 15:31:31 +03:00
Bananymous 39802b56c1 Kernel: Allow SYS_EXEC to fail at any point 
This patch builds new executable image to another pml4 structure and
only after everything is validated will current context be replaced.
This allows exec to fail "late" where previously it would panic the
kernel or kill the process. This allows graceful handling of exec
failures in userspace!
 2024-09-24 16:29:38 +03:00
Bananymous ebb87ccdde Kernel: Add asserts for overflow checks with ms -> ns conversions 2024-09-24 16:28:44 +03:00
Bananymous f0e55938c1 Kernel: Allow initial binding of threads to specific processor 2024-09-24 16:27:40 +03:00
Bananymous 348d04f7f5 Kernel: Implement static Process::kill() 
This allows killing processes even when there does not exist a current
thread.
 2024-09-24 13:16:43 +03:00
Bananymous d59463d11b Kernel: Fix TTY reading one keyevent after disabling input handling 2024-09-22 17:13:10 +03:00
Bananymous 23d6205659 Kernel: Move DEBUG_* macros to centralized Debug.h 
This makes toggling debug info much easier
 2024-09-20 11:00:07 +03:00
Bananymous b8622f2b4b Kernel: Implement simple RTL8169 driver 
This allows me to use internet when running banan-os on my hardware!
 2024-09-19 22:58:03 +03:00
Bananymous a489be0e05 Kernel: Allow parallel LAPIC timer initialization with HPET 
HPET supports reading LAPIC counter without locks, so it can be done in
parallel. This makes booting much faster. Previously initializing every
timer took 100 ms, so 16 CPUs took total of 1.6 seconds. This allows
doing it all in 100 ms.
 2024-09-19 14:41:59 +03:00
Bananymous 8e08046519 Kernel: Add asserts about having locked TTY's write lock 
This for some reason fixes booting on real hardware? :D
 2024-09-18 00:56:48 +03:00
Bananymous 999eb53364 Kernel: Release debug lock if its locked during kernel panic 
Also kernel panic now prints if it had lock
 2024-09-18 00:56:02 +03:00
Bananymous b779b3cf2d Kernel: Move file finding code to a helper 2024-09-17 18:52:52 +03:00
Bananymous e431e90b20 Kernel/LibC: Implement all chown family function with fchownat 2024-09-17 18:35:01 +03:00
Bananymous 4aa466b948 Kernel/LibC: Implement all chmod family functions using fchmodat 2024-09-17 17:19:26 +03:00
Bananymous 3666525d24 Kernel/LibC: Implement `readlink` in terms of `readlinkat` 2024-09-17 16:38:15 +03:00
Bananymous f1a4bbce53 Kernel/LibC: Implement all stat family functions with fstatat 
This patch gets rid of 2 unnecessary syscalls!
 2024-09-17 16:38:01 +03:00
Bananymous 708a720d9d Kernel: Remove SYS_OPEN 
This can be done with SYS_OPENAT with fd set to AT_FDCWD
 2024-09-17 16:16:47 +03:00
Bananymous d88ee5c9ee Kernel/LibC: Implement `creat` with `open` 
This allows getting rid of unnecessary SYS_CREATE. Directory creation
still has its own syscall, but I could combine it with SYS_OPEN also.
 2024-09-17 15:55:53 +03:00
Bananymous d4ea720239 Kernel: Don't crash the kernel if ext2 encounters disk error 
This will most likely result in a corrupted filesystem, but crashing the
kernel is too much :D
 2024-09-17 15:54:33 +03:00
Bananymous a084f83f4c Kernel: Rework kernel-side ELF loading 
ELFs are now loaded as MemoryRegions so they don't need special handling
anywhere. This also allows file backed COW optimizations to work. This
was not the case before.

This patch removes now obsolete LoadableELF and unused ELF files from
LibElf.
 2024-09-15 23:57:34 +03:00
Bananymous 7feb4c4ebd Kernel: VFS::file_from_absolute_path now used root_file() API 2024-09-15 02:38:25 +03:00
Bananymous 2911d1f018 Kernel: Cleanup and fix pseudo terminals 2024-09-15 02:38:07 +03:00
Bananymous 8956835d95 Kernel: Make sys_.*at use VFS relative path finding 2024-09-14 21:15:58 +03:00
Bananymous ea4ec2eafc Kernel: Make OpenFileDescrptor store VFS::File instead of inode+path 2024-09-14 20:10:21 +03:00
Bananymous 3a352078de Kernel: Make VirtualFileSystem::File non copyable 2024-09-14 20:09:28 +03:00
Bananymous 6060b39548 Kernel: Implement relative file searching in VFS 2024-09-14 19:44:20 +03:00
Bananymous 2b52ea4c6f Kernel: Make Inode::can_access const 2024-09-14 19:39:41 +03:00
Bananymous b41738b47b Kernel: Fix ACPI name formatting functions 2024-09-14 19:39:13 +03:00
Bananymous 467ac6c365 Kernel/LibC: Implement SOCK_CLOEXEC and SOCK_NONBLOCK 
This removes the need for fcntl after creating a socket :)
 2024-09-11 21:59:11 +03:00
Bananymous c77ad5fb34 Kernel: Implement copy-on-write memory for file backed `mmap`s 2024-09-11 19:33:50 +03:00
Bananymous c65613901f Kernel: Fix AML aliases and package elements 2024-09-10 16:18:42 +03:00
Bananymous 2bf65ef512 Kernel: Invoke ELF interpreter instead if it is specified 2024-08-28 17:06:32 +03:00
Bananymous d20752c318 Kernel: Make OpenFileDescritorSet::open take rvalue 
This gets rid of some implicit allocations from copy constructors
 2024-08-28 16:36:10 +03:00
Bananymous 991ae4383a Kernel/LibC: Implement fchmod 2024-08-25 15:07:42 +03:00
Bananymous fb35f06cf5 Kernel: Add better support for bootloaders loading the kernel 
Before I assumed that bootloaders loaded the kernel at physical address
0, but this patch kinda allows loading to different addresses. This
still doesn't fully work as kernel bootstrap paging relies on kernel
being loaded at 0
 2024-08-22 14:48:21 +03:00
Bananymous 37cd4ed504 Kernel: Add support for CSI @, b, d to VirtualTerminal 2024-08-22 14:04:45 +03:00
Bananymous 23194d1f53 Kernel: Implement basic random device to /dev/random 2024-08-22 14:02:26 +03:00
Bananymous 5cd7b40165 Kernel: Make BananBootloader info struct header compatible with C 2024-08-18 20:51:10 +03:00
Bananymous c7b134ba4b Kernel: Fix NVMe controller namespace numbering 
namespace numbers were incrementing globally instead of per controller.
This led to two single namespace controllers creating nvme0n1 and
nvme1n2
 2024-08-18 20:51:10 +03:00
Bananymous 42e2c15e0c Kernel: Add ps2=<scancode set> command line argument 
This allows forcing specific scancode set on broken PS/2 emulations
 2024-08-18 20:51:10 +03:00
Bananymous 40c6989374 Kernel: Implement AML ObjectTypeOp 2024-08-18 20:51:10 +03:00
Bananymous 0fa16cf982 Kernel: Fix and add some AML to_underlying functions 2024-08-18 20:44:51 +03:00
Bananymous 368f5e9799 Kernel: Add command lineoption `nousb` that will disable usb controller 2024-08-16 22:09:24 +03:00
Bananymous 490a28ee7a Kernel/AML: General cleanup and compliance improvements 2024-08-15 23:14:13 +03:00
Bananymous d729d7f570 Kernel: Implement AML storing to Buffer 2024-08-15 23:12:52 +03:00