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1001 Commits

Author SHA1 Message Date
Bananymous dc2a455395 Kernel: Optimize processes' memory management 
Memory regions are now stored in a sorted array. This allows O(nlogn)
lookup for address validation instead of the old linear lookup.

Now inserting new regions is also O(nlogn) instead of the old constant
time, but lookups are **much** more frequent
 2025-11-17 05:26:07 +02:00
Bananymous c700d9f714 Kernel: Implement connect for UDP socket 2025-11-17 05:26:07 +02:00
Bananymous f3beee9874 Kernel: Cleanup userspace pointer validation 2025-11-17 02:33:00 +02:00
Bananymous 89c0ff1a9d Kernel/LibC: Replace SYS_{GET,SET}_TLS with SYS_{SET,GET}_{FS,GS}BASE 
This allows userspace to use both registers
 2025-11-13 04:20:53 +02:00
Bananymous 9537922acc Kernel: Implement proper memory region splitting 
Memory regions are now splitted when they get munmapped, mprotected, or
mmapped with MAP_FIXED. This is used by couple of ports, and without
this we were just leaking up memory or straight up crashing programs.
 2025-11-13 04:20:53 +02:00
Bananymous f1d12c330e Kernel/LibC: Implement MMAP_FIXED_NOREPLACE 
This is a handy thing from linux

Also fix MMAP_FIXED validation and error reporting
 2025-11-12 00:06:36 +02:00
Bananymous 7b580b8f56 Kernel: Implement fd passing with SCM_RIGTHS 2025-11-12 00:06:36 +02:00
Bananymous 72982e3c2b Kernel/LibC: Take fcntl extra field as uintptr_t 
This allows passing pointers to fcntl
 2025-11-10 01:40:33 +02:00
Bananymous 04d24bce70 Kernel/LibC: Implement {recv,send}msg as syscalls 
This also removes the now old recvfrom and sendto syscalls. These are
now implemented as wrappers around recvmsg and sendmsg.

Also replace unnecessary spinlocks from unix socket with mutexes
 2025-11-10 01:40:33 +02:00
Bananymous 7367672570 Kernel: Default initialize flock as unlocked 
This caused unlocked flock's to hang on lock
 2025-11-02 21:10:13 +02:00
Bananymous 5f61581e1d Kernel: Show QR code with panic logs on kernel panic 
This makes debugging on real hardware easier!
 2025-10-28 05:50:19 +02:00
Bananymous f519cb2cc0 Kernel: Expose boot framebuffer device 2025-10-28 05:50:19 +02:00
Bananymous da39e98adf Kernel: Make F11 drop disk cache 
This can be useful to detect memory leaks or something
 2025-08-31 00:36:59 +03:00
Bananymous 791a541381 Kernel: Implement process stopping and continuing 2025-08-31 00:34:52 +03:00
Bananymous 30215963b2 Kernel: Fix /proc/<pid>/exe permissions 2025-08-29 01:40:56 +03:00
Bananymous 391fc0c4c2 Kernel: Don't crash if Ext2 filesystem doing too many fileops 
I had a hardlimit of 10 block buffers and if they ran out, the kernel
would crash. this patchs increases the number of buffers to 16 and
removes the crash condition when they run out :D
 2025-08-28 15:55:40 +03:00
Bananymous a8bb07052e Kernel: Rewrite SMP message code 
Remove locks and map smp buffer as uncached
 2025-08-28 15:55:40 +03:00
Bananymous 51cd951b4c Kernel: Add hardlink support to tmpfs 2025-08-28 15:55:40 +03:00
Bananymous abbe7b79d6 Kernel: Add /proc/<pid>/exe 2025-08-28 15:55:40 +03:00
Bananymous e4abe75043 Kernel: Add /proc/self 2025-08-28 15:55:40 +03:00
Bananymous f926e599fa Kernel: Zero initialize Processors 
This moves processor array to .bss reducing data size by 8192 bytes :)

This needed GCC updated to 15.2.0 because of an internal compiler error
I found :)
 2025-08-25 18:29:14 +03:00
Bananymous 9a6eae69ba Kernel: Replace all occurances of BSB with BSP 2025-08-25 17:11:32 +03:00
Bananymous 350ae90bb6 Kernel: Make all futexes shared 
Some stuff tries to use shared futexes so make them all shared. Private
futexes would be faster as they are process specific but supporting both
would need some reworks
 2025-08-21 02:56:17 +03:00
Bananymous 0dfe0b7023 Kernel/LibC: Implement sigaltstack 2025-08-21 02:52:49 +03:00
Bananymous def236b7cd Kernel/LibC: Implement sigwait 2025-08-20 20:16:19 +03:00
Bananymous 247743ef9c Kernel/LibC: Implement sigsuspend 2025-08-20 20:14:54 +03:00
Bananymous 49122cf729 Kernel: Allow adding signals to thread that are blocked 2025-08-20 18:35:18 +03:00
Bananymous 0bece8a54c Kernel: Add missing ACPI resource header 2025-08-19 16:23:30 +03:00
Bananymous c07188a60e Kernel: Look for PS/2 devices in the ACPI namespace 
This allows finding the PS/2 controller on newer machines that don't
have the 8042 bit set in FADT.
 2025-08-15 17:02:15 +03:00
Bananymous c2017a5181 Kernel: Allow looking up devices with multiple eisa ids 
Also match against _CIDs in addition to _HID
 2025-08-15 17:02:15 +03:00
Bananymous 58ad839136 Kernel: Add support for ACPI Embedded Controllers 2025-08-15 17:02:15 +03:00
Bananymous ef6ee78fd1 Kernel/LibC: Implement chroot 2025-08-11 14:07:37 +03:00
Bananymous af0bca74e4 Kernel/LibC: Implement {get,set,init}groups 
This allows dropping /etc/group parsing from the kernel :D
 2025-08-10 19:57:31 +03:00
Bananymous f41e254e35 Kernel: Fix dead lock on process exit 2025-08-10 19:57:31 +03:00
Bananymous 5b587d199e Kernel/LibC: Implement FIONREAD for tcp and udp sockets 2025-08-10 19:57:31 +03:00
Bananymous 7ad3f967db Kernel: Don't stop audio processing after each entry in AC97 2025-08-07 16:43:05 +03:00
Bananymous 72f85dce2b Kernel: Make userspace stack on-demand allocated 
Also bump the hardlimit of stack size from 512 KiB->32 MiB. This still
feels quite low but is much better than before :D
 2025-08-07 16:43:05 +03:00
Bananymous f5bbcc017c Kernel: Only send one smp message when reserving a range 
This was causing some kernel panic because processors ran out of smp
message storage when reserving large areas.

Also most of the time there is no need to actually send the SMP message.
If process is mapping something to just its own address space, there is
no need for a TLB shootdown. Maybe this should be only limited to kernel
memory and threads across the same process. I'm not sure what the best
approach here and it is better to send too many invalidations that too
few!
 2025-08-07 16:43:05 +03:00
Bananymous 647fedfa19 Kernel: Add missing multiboot.h 2025-08-05 17:12:26 +03:00
Bananymous f1369c8fd6 Kernel/LibC: Implement mprotect 
There may be some race conditions with this but i think this is good
enough to start with
 2025-08-05 03:09:24 +03:00
Bananymous 5940e912b3 Kernel/LibC: Implement simple futex 2025-08-05 03:09:24 +03:00
Bananymous 927fbda1e8 Kernel: Make on-demand paging thread safe 2025-08-05 03:09:24 +03:00
Bananymous cc04bd0f06 LibC/Kernel: Implement ttyname_r 2025-07-31 22:47:40 +03:00
Bananymous e72e1e4e43 LibC: Add _SC_NPROCESSORS_{CONF,ONLN) 2025-07-31 22:47:40 +03:00
Bananymous 2c65590134 Kernel: Add support for absolute position mouse 2025-07-19 18:00:39 +03:00
Bananymous 5874fd640e Kernel: Fix TmpFS for 32 bit target 
There was a problem when sizeof(size_t) != sizeof(PageInfo)
 2025-07-18 19:07:32 +03:00
Bananymous d5301508ec Kernel: Increase kernel thread stack size 
HACK HACK HACK

This is just to make banan-os boot on one razer laptop where AML
triggers a stack overflow :)
 2025-07-17 21:21:14 +03:00
Bananymous 793cca423b Kernel: Fix system timer disabling 
I was actually not disabling system timer (HPET, PIT) when using lapic
timers for scheduling. This made BSB get too many timer interrupts :D
 2025-07-16 20:02:04 +03:00
Bananymous 3960687f9d Kernel: Parse PCIConfig opregion address on read/write 
I was testing on some hardware and _ADR does not have to exist in the
namespace when opregion is parsed :)
 2025-07-16 15:34:36 +03:00
Bananymous 8a663cb94f Kernel: Implement basic AC97 driver 2025-07-15 14:17:49 +03:00