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1451 Commits

Author SHA1 Message Date
Bananymous 46d4e32510 Kenrel: Validate inode open mode on read/write syscalls 2024-12-15 20:49:12 +02:00
Bananymous 1815a913c3 Kernel: Remove unnecessary hash map lookups 2024-12-15 20:47:40 +02:00
Bananymous 12a37500b0 Kernel: Fix triple-fault in vitual tty 
This was happening when printing non-utf8 data while having virtual tty
as the debug console.
 2024-12-09 03:35:51 +02:00
Bananymous 2d0690ae2d Kernel: Cleanup most of syscalls dealing with files 2024-12-07 05:33:04 +02:00
Bananymous 71a2d0971f Kernel: Remove unnecessary reverse from VFS file search 2024-12-07 01:41:23 +02:00
Bananymous 3bf57e0748 Kernel: Add . and .. entries to /proc/<pid> directories 
This allows to run `cd ..` in one of these directories
 2024-12-07 01:37:40 +02:00
Bananymous 51b6329c86 Kernel: Make backspace \b and delete 0x7F 
This is what `vim` seems to expect and imo makes way more sense.
 2024-12-05 17:34:37 +02:00
Bananymous 72d9e4c1e7 Kernel: Remove accidental debug prints from fcntl syscall 2024-12-05 17:34:32 +02:00
Bananymous 49133dce48 Kernel: Make pipe check data every 100ms 
This prevents dead lock if read-end does not detect data before blocking
why write-end already notified.
 2024-12-03 21:54:27 +02:00
Bananymous 0a5aacfd87 Kernel: Allow open with O_CREAT bypass file permission checks 
call to open(path, O_CREAT|O_EXCL|O_RDWR, 0444) should open file as
read-write although file is created as read-only on filesystem.
 2024-12-03 16:17:34 +02:00
Bananymous 2dec3a6c95 Kernel: Add some sanity checks for existanse of threads 2024-12-03 16:16:50 +02:00
Bananymous fcc2814199 Kernel: Remove process from alarm list after it dies 2024-12-03 16:16:08 +02:00
Bananymous 0fab7ad63b Kernel: Fix SYS_FCNTL command handling :) 
I had misunderstood how these work
 2024-12-03 16:12:26 +02:00
Bananymous e6a2f55a59 Kernel: Closing file backed mmap wont expand the file size 2024-12-03 16:12:26 +02:00
Bananymous 67e9ca56ac Kernel: Create /dev/urandom -> /dev/random symlink 
Most software uses urandom instead of random so this allows it work
normally.
 2024-12-03 16:12:26 +02:00
Bananymous 713daf6cd3 Kernel/LibC: Add support for creating hardlinks 2024-12-03 16:12:26 +02:00
Bananymous 415b20f884 LibC: Remove errno EEXISTS 
I don't know why I had added this. It doesn't seem to be a thing on
either POSIX or linux. This was literally equivalent to EXIST
 2024-12-02 20:13:38 +02:00
Bananymous d58ca5f37a Kernel/LibC: Implement symlink{,at} 2024-12-02 20:13:38 +02:00
Bananymous a10ca47657 Kernel/LibC: Implement {,f}statvfs 2024-12-02 20:13:37 +02:00
Bananymous ad1f175a39 Kernel/LibC: Implement getppid 2024-12-02 20:13:37 +02:00
Bananymous 6ed1435aeb Kernel/LibC: Implement tcgetpgrp 2024-12-02 20:13:37 +02:00
Bananymous 6346e288ad LibC: Implement getrlimit 2024-12-02 20:13:37 +02:00
Bananymous 747c3b2a4b Kernel/LibC: Implement fsync 2024-12-02 20:13:37 +02:00
Bananymous c02de2580d Kernel: Add support for SIOCGIFNAME ioctl 2024-12-02 20:13:37 +02:00
Bananymous 4149748766 Kernel: Add missing include in ACPI headers 2024-12-01 21:32:34 +02:00
Bananymous 8dbbbc1a1a Kernel: Add command line option `readonly` 
This prevents calls to write_sectors_impl and all dirty pages are always
kept in RAM.
 2024-11-27 13:31:55 +02:00
Bananymous a6fc3cf7a6 Kernel: Clear AHCI pending interrupts 
I have no idea why I did not have this in. All devices were just
constatly spamming interrupts like crazy :D
 2024-11-26 01:39:11 +02:00
Bananymous 1941885cfd Kernel: Disable USB Mass Storage writing until I get it fixed 
This prevented real hw from running for over 10-20 seconds. When first
disk sync happens after 10 secods, USB storage would enter faulty state
and not allow any io operations.

I have no idea what the problem is. If I don't send Reset command to the
USB device writing seems to work fine. I also don't think its part of
the Reset process either as reading works just fine.
 2024-11-26 01:01:25 +02:00
Bananymous 88a86a9927 Kernel: Fix Thread destruction after sys_exit 
This had undefined behaviour as Thread's (Processes's) PageTable was
destroyed before Thread had the change to destroy its own stacks that
lived on the PageTable.
 2024-11-26 00:59:34 +02:00
Bananymous 48e030bca3 Kernel: Make PageTable non-copyable and non-movable 
Also PageTable destructor now verifies that is has allocated something
instead of assuming paddr of 0.
 2024-11-26 00:58:35 +02:00
Bananymous 793c0368f2 Kernel: Refactor USB mass storage code 
Also increment command timeout to 10 seconds so commands don't timeout
when they are not supposted to :)
 2024-11-23 01:24:32 +02:00
Bananymous 076001462e Kernel: Implement AML ConcatOp 2024-11-22 22:23:07 +02:00
Bananymous d2e1d8ec13 Kernel: Implement AML NotOp 2024-11-22 22:22:44 +02:00
Bananymous 30ceaa6bef Kernel: Implement AML ToHexStringOp 2024-11-22 22:22:27 +02:00
Bananymous 0247d47a3d Kernel: Make USBMassStorage send_scsi_command templated 
This allows passing ConstByteSpan when data will not be modified
 2024-11-22 22:21:19 +02:00
Bananymous 480368c878 Kernel: Cleanup and fix xHCI interrupt handling 
Always clear EventHandlerBusy bit and remove unnecessary nesting
 2024-11-22 22:19:53 +02:00
Bananymous c1d8790623 Kernel: Don't allow sending commands to halted xHCI 2024-11-22 22:19:29 +02:00
Bananymous fb1ffec5bb Kernel: Remove unused mutex from xHCI 
This was preventing multiple xHCI controllers to do parallel device
initialization
 2024-11-22 22:18:38 +02:00
Bananymous 1bdabe693f Kernel: Preserve RsvdP bits in xHCI controller initialization 2024-11-22 22:18:09 +02:00
Bananymous ce09f35275 Kernel: Fix PCI 64 bit MSI msg_data offset 2024-11-22 22:17:25 +02:00
Bananymous 40c13043b3 Kernel: Add support for scratchpad buffers in xHCI 2024-11-22 22:16:57 +02:00
Bananymous e620068416 Kernel: Allow USB devices to handle STALL conditions 2024-11-22 22:15:22 +02:00
Bananymous 8e624ca85a Kernel: Don't panic if uninitialized AHCI device gets an interrupt 2024-11-21 20:41:13 +02:00
Bananymous c7afd46016 Kernel: Don't log spurious interrupts 
Some PCs seem to be spamming a lot of int 7
 2024-11-21 20:40:29 +02:00
Bananymous 3573656244 Kernel: Make PARTUUID matching case insensitive 
Case sensitivity made it super annoying to work with :)
 2024-11-21 20:39:27 +02:00
Bananymous 1de6de975a Kernel: Rename cmdline UUID= to PARTUUID= 
This makes more sense and behaves more like existing software.
 2024-11-21 20:38:50 +02:00
Bananymous 865061b492 Kernel: Temporary fix to make tmpfs more stable 
whole TmpFS will have to be rewritten at some point :)
 2024-11-21 18:13:26 +02:00
Bananymous 70880636f4 Kernel: Implement basic USB Mass Storage support 
I finally decided to do this :D
 2024-11-21 18:08:37 +02:00
Bananymous 8054f6c618 Kernel: Wait 10 seconds to find root device 
If root device is initialized asynchronously it may not be ready when
main initialization thread is finished. This patch adds searching for
root device every 500 ms for 10 seconds.
 2024-11-21 17:56:58 +02:00
Bananymous 658ea68d04 Kernel: Check max packet size for all USB devices 
Spec says that this has to be done. Most cases can be probably skipped
as I used to do, but this is less error prone and adds practically no
overhead
 2024-11-21 13:46:42 +02:00
Bananymous 5750f87396 Kernel: Fix unaligned access in xHCI controller initialization 2024-11-21 13:46:09 +02:00
Bananymous 1253e2a458 Kernel: Add support for bulk endpoints and update endpoint API 
USB device now sets its own data buffers for IN/OUT endpoints. This
allows more customization and parallelism as data buffer does not have
to be shared.
 2024-11-21 13:44:21 +02:00
Bananymous 857b3e92f8 Kernel: Support initializing USB 3 devices 2024-11-21 13:40:16 +02:00
Bananymous 8bf14d542e Kernel: Move SCSI device rdev allocation out of ATA code 2024-11-21 13:36:59 +02:00
Bananymous 97718b4046 Kernel: Don't launch init process twice 
I had accidentrally left the old init process launch in when replacing
it with the new one.
 2024-11-19 20:43:38 +02:00
Bananymous c07fd265f0 Kernel: Add support for ATA CHS addressing and cleanup code 
I thought that I had an PC without LBA support so I implement support
for CHS. Turns out that my ATA device detection was broken and was no
device on that port and initialize data was just garbage.

Now that I added CHS, I guess I should just keep it in :)

Both ATA read and write are now combined into a single function to avoid
code duplication.
 2024-11-19 20:39:32 +02:00
Bananymous 1de50a2a94 Kernel: Improve ATA device initialization 
This does better detection of empty ports and fixes floating bus
read-value from 0x00 to 0xFF.
 2024-11-19 00:25:42 +02:00
Bananymous 627ca432cc Kernel: Make PS/2 controller not hang if device keeps sending resend 2024-11-19 00:18:48 +02:00
Bananymous 71563034a7 Kernel: Remove accidentally left debug prints 2024-11-18 03:45:07 +02:00
Bananymous aaff5a65e1 Kernel/init: /dev/tty is now custom symlink to controlling terminal 
kernel now passes the name of default console to init process so init
knows which file to open as stdio. before /dev/tty was referencing the
system wide current terminal which was inherited from cmdline. This
doesn't work anymore as we have pseudo terminals implemented that can
chage the current terminal during runtime :D
 2024-11-17 22:38:52 +02:00
Bananymous 458a362f98 Kernel: Allow kernel to pass arguments to init process 2024-11-17 22:38:02 +02:00
Bananymous f206e72447 Kernel: Don't require msync addresses to be page aligned 
Inodes implementing msync can require page aligned addresses, but are
also allowed to not :) This reduces sizes of framebuffer msyncs!
 2024-11-17 20:15:28 +02:00
Bananymous 58e45fb394 Kernel: Print process name on exceptions if it is available 2024-11-17 20:15:28 +02:00
Bananymous 5e8fdc997a Kernel: Prevent userspace from overwriting CPU load memory 2024-11-17 20:15:28 +02:00
Bananymous 0228cd4f31 Kernel: Increase userspace stack size and decrease kernel stack 
Quake II needs a lot of stack, it was overflowing my 256 KiB stack so
this patch doubles that, so Quake II can run!

Also every thread had 256 KiB kernel stack. This is unnecessarily large
and now dropped to 32 KiB.
 2024-11-14 21:03:04 +02:00
Bananymous 64c52012df Kernel: Fix MemoryRegion overlap comparison 
This made some calls to `munmap` unmap extra regions.
 2024-11-13 17:26:42 +02:00
Bananymous 1838ea5c30 Kernel: Fix pseudo terminal leaks 2024-11-04 15:35:07 +02:00
Bananymous a3f41fd4d9 Kernel: Cleanup disk cache 
Add missing include and cleanup code calling automatic disk sync.
 2024-11-03 20:28:15 +02:00
Bananymous f4be37700f Kernel/userspace: rework floating point math 
SSE is now unconditionally enabled any where and most of math.h is now
actually implemented. using __builtin_<func> lead to many hangs where
the builtin function would just call itself.
 2024-11-03 20:28:15 +02:00
Bananymous ed19bb11fe Kernel: Cleanup thread default sse initialization 2024-11-03 20:22:28 +02:00
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 4ba33175cf Kernel: Don't leak memory when preparing fast page 
For some reason I was allocating memory for page table entry...
 2024-10-14 11:34:48 +03:00
Bananymous 3edc1af560 Kernel: Don't map main bios area in page table initialization 
This is only needed for RSDP lookup so it can be done with fast pages
 2024-10-14 11:32:54 +03:00
Bananymous 55fbd09e45 Kernel: Rewrite physical memory allocation with PageTable::fast_pages 2024-10-14 11:32:54 +03:00
Bananymous 166550fbba Kernel: Ext2 check if file exists before creating it 2024-10-07 18:21:05 +03:00
Bananymous b6e040dfc2 Kernel/Shell: Fix backspace and delete key byte sequences 2024-10-04 04:14:47 +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 b89fc3fe87 Kernel: Implement ANSI SGR 7 to invert colors 
This allows vim's visual selection to show up
 2024-09-26 15:08:11 +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 d395cf38b7 Kernel: Binding to port 0 will always find unused port 2024-09-22 17:30:01 +03:00
Bananymous 57aec2a733 Kernel: Validate pointer's when printing stack trace 
There was an kernel panic if stack trace contained uncanonical
addresses.
 2024-09-22 17:16:01 +03:00
Bananymous ae89237453 Kernel: Disable warning when calling syscall 
This warning is only generated when compiling with UBSAN and I don't see
how the value would even be uninitialzed.
 2024-09-22 17:15:07 +03:00
Bananymous 60d5257678 Kenrel: Add __builtin_unreachable support for UBSAN 2024-09-22 17:14:36 +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 bc0acc6f44 Kernel: Validate network packet sizes before casting 
This caused a lot of crashes on invalid packets :D
 2024-09-20 10:46:59 +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 7f0c39fe91 Kernel: Don't crash the kernel if packet is smaller than ethernet hdr 2024-09-19 22:51:55 +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 0620ed3d4f Kernel: Fix file open permissions for some syscalls 2024-09-17 19:11:48 +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