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725 Commits

Author SHA1 Message Date
Bananymous cdbdc1a822 Kernel: Remove lai as a dependecy 
I don't think lai is needed anymore, since my own AML interpreter
can do ACPI poweroff which was all that lai was used for.
 2024-04-10 04:39:48 +03:00
Bananymous 7a2be05c69 Kernel: Implement poweroff with my AML interpreter 
This can succesfully poweroff qemu!
 2024-04-10 04:32:35 +03:00
Bananymous 5be38d0702 Kernel: My AML parser can now enable ACPI mode on QEMU! 2024-04-10 03:05:27 +03:00
Bananymous ff203d8d34 Kernel: Implement more AML method invocation stuff 
Method invocation is starting to come together. This implemenetation
can interpret some of the qemu's functions to enter ACPI mode.

PCI config space access is currently the one thing is between
entering ACPI mode.
 2024-04-10 01:52:14 +03:00
Bananymous 23fa39121c Kernel: Start working on AML method evaluations 
Also fix namespace lookup and scope creations.
 2024-04-09 18:37:51 +03:00
Bananymous b16e65168f Kernel: Rewrite whole AML parser 
Now AML parsing is actually done while respecting namespaces and
scopes. I implemented the minimal functionality to parse qemu's AML.

Next step is to implement AML interpreting and then we can drop lai
as a dependency.
 2024-04-09 01:16:07 +03:00
Bananymous 22bc4b4271 Kernel: Fix AML package parsing 2024-04-07 20:32:22 +03:00
Bananymous e7ef7a9e55 Kernel: Implement barebones AML parser 
This implements only parsing for AML in qemu. InvokeMethods are not
parsed since number of arguments to Methods is not yet known.

Parsing AML uses multiple kilobytes of stack space, so I increased
boot stack size by a lot :D

I am not sure where my own AML is going, but this is good start if
I decide to implement full ACPI on my own.

This code is very much just ugly macro expansion.

Qemu has 2 DefPackage elements that I am not able to parse. Package
data ends while there should be still multiple elements.
 2024-04-07 17:03:30 +03:00
Bananymous e0011d22f2 Kernel: Move ACPI to its own directory and namespace 2024-04-04 15:00:13 +03:00
Bananymous f8c01418b1 Kernel: Fix multiprocessing on x86_64 
I did not even start APs after initializing them... :D
 2024-04-03 14:21:55 +03:00
Bananymous c95a271821 Kernel: Set ss in i686 tss 2024-04-03 00:43:38 +03:00
Bananymous 2106a9e373 Kernel: Rework scheduler/processor stacks. 2024-04-02 12:34:42 +03:00
Bananymous 5050047cef Kernel: Rewrite whole scheduler 
Current context saving was very hacky and dependant on compiler
behaviour that was not consistent. Now we always use iret for
context saving. This makes everything more clean.
 2024-03-29 18:02:12 +02:00
Bananymous 1b65f850ee Kernel: Rename thread stacks to more appropriate names 2024-03-27 15:06:24 +02:00
Bananymous 4d1f0e77f2 Kernel: Fix physical address size for x86_32 
Having 32 bit address space does not mean physical address space
is also only 32 bits...
 2024-03-26 20:16:20 +02:00
Bananymous 1943c3e7a1 Kernel: Unify IDT and GDT code between x86_64 and x86_32 
The code is pretty much the same, so there are just couple macros
differiating initialization.
 2024-03-26 16:42:02 +02:00
Bananymous 99e30a4d7d Kernel: Replace i386 with i686 
I don't really want to be working with i386 since it doesn't support
compare exchange instruction
 2024-03-26 02:48:26 +02:00
Bananymous 93975fdc45 Kernel: Process signal mask is now 2 32 bit values 
This allows signal mask to be atomic on 32 bit target
 2024-03-26 02:46:51 +02:00
Bananymous a9db4dd9a3 Kernel: NVMe Queue max simultaneous commands is dependent on arch 
This allows mask to be atomic on 32 bit architectures
 2024-03-26 01:45:43 +02:00
Bananymous fe17958b9f Kernel: Rename rsp->sp and rip->ip 
This makes more sense if we support i386
 2024-03-22 15:41:15 +02:00
Bananymous 7f029b2713 Kernel: Allow Processor compilation for i386 targets 
This is achieved by rewriting some inline assembly and changing
ProcessorID to be 32 bit value. For some reason if processor id
is 8 bits gcc runs out of 8 bit registers on i386.
 2024-03-22 15:41:15 +02:00
Bananymous 2352c86048 Kernel: i386 has 14 indirect blocks in TmpInode instead of 2 
This allows keeping size of TmpInodeInfo as 128
 2024-03-22 14:01:27 +02:00
Bananymous 7ce0370b6a Kernel: Define KERNEL_OFFSET for i386 target 2024-03-22 12:35:49 +02:00
Bananymous 090c3c9930 Kernel: NVMe queues now supports upto 64 simultaneous operations 2024-03-15 13:46:35 +02:00
Bananymous 48ea9e1c1d Kernel: PS2Controller uses RecursiveSpinLock so timeouts don't panic 2024-03-15 13:45:44 +02:00
Bananymous 89ca4c8a8b Kernel: Implement IPI broadcasting 2024-03-09 23:53:38 +02:00
Bananymous 45d6caa1d0 Kernel: APs now start their idle threads when scheduler is started 2024-03-09 23:51:40 +02:00
Bananymous 55d2a64f54 Kernel: Map interrupt handlers for all processors 
This doesn't mean that processors will actually handle the irqs
 2024-03-09 23:50:57 +02:00
Bananymous 2420886c2c Kernel: Move current and idle thread to Processor 2024-03-08 23:39:29 +02:00
Bananymous e636dce919 Kernel: Rewrite scheduler thread lists 
Scheduler now has its own data SchedulerQueue which holds active nad
blocking thread lists. This removes need for BAN/Errors.h and making
current thread separate element instead of iterator into linked list.
This makes it possible to have current_thread on each processor
instead of a global one in Scheduler.
 2024-03-08 22:13:45 +02:00
Bananymous 1a1f9b1cf2 Kernel: Fix {read,write}_gs_sized input operands to work always 2024-03-08 22:12:33 +02:00
Bananymous 29fd682672 Kernel: Store current processor pointer in IA32_GS_BASE 
This allows easier access to processors fields
 2024-03-07 16:05:29 +02:00
Bananymous 54f64e7618 Kernel: Move current page table to Processor 
APs can now map kernel page table and print current time!
 2024-03-06 02:19:59 +02:00
Bananymous f0105cb7fb Kernel: Move Interruptable from InterruptController.h to its own file 2024-03-06 00:47:02 +02:00
Bananymous 76b0f80169 Kernel: Move IDT to Processor 2024-03-06 00:45:54 +02:00
Bananymous f84df175ce Kernel: Save BSB id 2024-03-06 00:36:09 +02:00
Bananymous 58aca68726 Kernel: Move GDT to Processor 2024-03-06 00:35:45 +02:00
Bananymous 418bc54f2b Kernel: Move SpinLock definition to header and fix Scheduler locking 
This patch allows inlining of spinlocks :)
 2024-03-04 22:36:41 +02:00
Bananymous 9c36d7c338 BAN/Kernel: Rework assertion/panic system 
BAN/Assert.h does not need any includes meaning it can be included
anywhere without problems.
 2024-03-04 11:41:54 +02:00
Bananymous 8141b9977d Kernel: Per processor information is now stored in class Processor 
This allows us to allocate processor stacks, and other per processor
structures dynamically in runtime. Giving processor stack to
ap_trampoline feels super hacky, but it works for now.
 2024-03-03 22:30:06 +02:00
Bananymous c035d3c82c Kernel: Start all processors on kernel boot 
Processors don't do anything, except print hello message and halt.
 2024-03-03 02:19:43 +02:00
Bananymous 1de9daa40f Kernel: Move interrupt status stuff to Processor.h 
SpinLocks are now locked with processor id instead of thread id. This
allows having multiple processors running while scheduler is not yet
activated.
 2024-03-03 01:47:22 +02:00
Bananymous a667d88f93 Kernel: Remove now obsolete CriticalScope 
All critical scopes in kernel are now replaced by SpinLocks. This
allows proper locking in actual multiprocessing with multiple cores.
 2024-03-01 15:51:02 +02:00
Bananymous 8d7dd577ab Kernel: Replace last CriticalScopes in kernel with SpinLocks 2024-03-01 15:49:39 +02:00
Bananymous 054b41383f Kernel: Implement SpinLock unsafe that does not keep track of locker 
This will be used in scheduler where thread ids are changing
 2024-03-01 15:48:08 +02:00
Bananymous 02ad199138 Kernel: Move interrupt status functions to kernel/Interrupts.h 2024-03-01 02:13:28 +02:00
Bananymous 65c4f9db5b Kernel: Replace CriticalScopes with SpinLocks in Process/Thread 2024-03-01 02:13:28 +02:00
Bananymous 51e38b7614 Kernel: Replace CriticalScope with SpinLock in SerialTTY 2024-02-29 19:17:28 +02:00
Bananymous 90878a7c2b Kernel: Replace CriticalScopes with SpinLocks in networking code 2024-02-29 19:17:28 +02:00
Bananymous 7f028f70d5 Kernel: Replace CriticalScopes with SpinLock in PS/2 and input code 2024-02-29 19:17:28 +02:00
Bananymous ec0cb5fd54 Kernel: Remove CriticalScopes from memory handing code 2024-02-29 19:16:41 +02:00
Bananymous 682de62c57 Kernel: Replace HPET CriticalScope with SpinLock 2024-02-29 19:15:33 +02:00
Bananymous 18253b6966 Kernel: Replace InterruptController CriticalScopes with SpinLock 2024-02-29 19:15:33 +02:00
Bananymous d94f6388b7 Kernel: Fix all broken locks from new mutexes 2024-02-28 22:45:34 +02:00
Bananymous 6d59a2b45d Kernel: Remove VirtualRanges created in kmalloc memory 
These were only used as stacks of kernel threads, but they can just
as well be allocated as full pages from Heap
 2024-02-28 13:19:18 +02:00
Bananymous efdc4817bb Kernel: Print to debug log ICMP unreachable messages 
These messages should be forwarded to underlying sockets
 2024-02-28 13:19:18 +02:00
Bananymous 9594ee8e47 Kernel: Start making device numbers unique for each device 2024-02-22 15:53:48 +02:00
Bananymous f73e954b28 Kernel: Remove SpinLock from Pipe 
Pipe already is using lock on the inode. If you read from pipe when
there was no data, pipe blocked indefinately since writes were blocked
by Inode::m_lock.
 2024-02-14 17:21:32 +02:00
Bananymous 00662bad46 Kernel: Rewrite HPET code 
Now the set timer frequency actually works... :D
 2024-02-13 17:59:48 +02:00
Bananymous 9314528b9b Kernel: Improve syscall handling 
Syscalls are now called from a list of function pointers
 2024-02-12 21:51:11 +02:00
Bananymous 3fc1edede0 Kernel/LibC: Implement super basic select 
This does not really even block but it works... :D
 2024-02-12 17:26:33 +02:00
Bananymous f50b4be162 Kernel: Cleanup TCP code 2024-02-12 15:44:40 +02:00
Bananymous 435636a655 Kernel: Implement super simple TCP stack 
No SACK support and windows are fixed size
 2024-02-12 04:45:42 +02:00
Bananymous ba06269b14 Kernel: Move on_close_impl from network socket to udp socket 2024-02-12 04:45:42 +02:00
Bananymous be01ccdb08 Kernel: Fix E1000 mtu 2024-02-12 04:25:39 +02:00
Bananymous b45d27593f Kernel: Implement super simple PRNG 2024-02-12 04:25:06 +02:00
Bananymous ff49d8b84f Kernel: Cleanup OSI layer overlapping 2024-02-09 17:05:07 +02:00
Bananymous ed0b1a86aa Kernel: Semaphores and Threads can now be blocked with timeout 2024-02-09 15:28:15 +02:00
Bananymous 534b3e6a9a Kernel: Add LockFreeGuard to LockGuard.h 2024-02-09 15:13:54 +02:00
Bananymous d452cf4170 Kernel: Fix checksum for packets with odd number of bytes 2024-02-09 01:20:40 +02:00
Bananymous acf79570ef Kernel: Cleanup network APIs and error messages 2024-02-08 18:33:49 +02:00
Bananymous 9bc7a72a25 Kernel: Implement unix domain sockets with SOCK_DGRAM 
Also unbind sockets on close
 2024-02-08 13:18:54 +02:00
Bananymous 49889858fa Kernel: Allow chmod on TmpSocketInode 2024-02-08 03:16:01 +02:00
Bananymous e7dd03e551 Kernel: Implement basic connection-mode unix domain sockets 2024-02-08 02:28:19 +02:00
Bananymous 572c4052f6 Kernel: Fix Process APIs 2024-02-07 15:57:45 +02:00
Bananymous 132286895f Kernel: Implement Socket inodes for tmpfs 2024-02-07 15:57:45 +02:00
Bananymous 41cad88d6e Kernel/LibC: Implement dummy syscalls for accept, connect, listen 2024-02-07 15:57:45 +02:00
Bananymous 5da59c9151 Kernel: Make better abstractions for networking 2024-02-06 16:45:39 +02:00
Bananymous f804e87f7d Kernel: Implement basic gateway for network interfaces 2024-02-05 18:18:56 +02:00
Bananymous dd3641f054 Kernel: Cleanup ARPTable code 
Packet process is now killed if ARPTable dies.

ARP wait loop now just reschecules so timeout actually works.
 2024-02-05 18:18:56 +02:00
Bananymous d15cbb2d6a Kernel: Fix IPv4 header checksum calculation 2024-02-05 18:18:56 +02:00
Bananymous 692cec8458 Kernel/Userspace/LibC: Implement basic dprintln for userspace 2024-02-05 01:24:09 +02:00
Bananymous 649e9f4500 Kernel: ARP now replies to requests 2024-02-03 18:04:12 +02:00
Bananymous 5cfe249945 Kernel: Cleanup network code and implement basic ARP request 2024-02-03 02:39:26 +02:00
Bananymous a0138955cd Kernel: Implement barebones arp table 2024-02-03 01:50:10 +02:00
Bananymous e1ffbb710b Kernel/LibC: Implement basic ioctl for network addresses 2024-02-03 01:50:10 +02:00
Bananymous 0f154c3173 Kernel: Implement basic recvfrom 2024-02-02 13:50:00 +02:00
Bananymous ec2f21bb9f Kernel/LibC: Implement SYS_SENDTO 2024-02-02 03:16:01 +02:00
Bananymous ab150b458a Kernel/LibC: Implement basic socket binding 2024-02-02 01:31:58 +02:00
Bananymous cf28ecd5a6 Kernel/LibC: Add SYS_SOCKET 2024-02-01 23:39:09 +02:00
Bananymous 99eed9c37a Kernel: Start work on network stack 2024-02-01 23:38:06 +02:00
Bananymous f4e86028d0 Kernel: Write simple working E1000 and E1000E drivers 2024-02-01 22:08:59 +02:00
Bananymous c69efc040c Kernel: Scheduler now uses the new LinkedList API for moving threads 
Scheduler doesn't have to depend on the fact that allocations should
work when same amount of memory is just deallocated
 2024-02-01 15:22:28 +02:00
Bananymous 95e861bcdd Kernel: Optimize all SpinLocks. All locking operations are atomic 2024-01-30 12:39:37 +02:00
Bananymous ca8e7b40bc Kernel: Implement SpinLock without CriticalScope 
This actually is not even spinlock since it yields the current
thread. It will become one when I get to SMP though...
 2024-01-30 01:21:15 +02:00
Bananymous 6bfe833aa5 Kernel: Parse RSDP from multiboot headers if exists 2024-01-26 00:49:42 +02:00
Bananymous dfe5a2d665 All: Cleanup all files 
Add newline to end of files and remove whitespace from end of lines
 2024-01-24 15:53:38 +02:00
Bananymous 2cee2a85e6 Kernel: DevFS now stores all devices 
This allows removing hack in PCI that was required to keep NVMe
controller alive.
 2024-01-24 14:33:50 +02:00
Bananymous 5001fa58e0 Kernel: Fix wait syscall with atomics 2024-01-24 14:32:52 +02:00
Bananymous 54a92293da Kernel: Implement NVMe driver 
I'm  actually able to boot this os fine on own laptop now!
 2024-01-17 08:26:58 +01:00
Bananymous 812e9efd41 Kernel: StorageDevices now specify prefix for partition names 2024-01-14 01:16:48 +02:00
Bananymous c6130f33d7 Kernel: Implement MSI, MSI-X and interrupt reservation 2024-01-13 18:21:21 +02:00
Bananymous 56a29dc176 Kernel: Fix PS/2 Controller if port 0 is empty 2024-01-13 17:05:29 +02:00
Bananymous 83ca469ed7 Kernel: Modifier keys are taken from current keyboard layout 
I used to assume where all modifiers were, but they are now taken
from keyboard layout.
 2024-01-11 11:53:11 +02:00
Bananymous d2c0718f7d Kernel: Fix toggleable modifier keys and add two more keys 2024-01-11 11:43:05 +02:00
Bananymous 51214ea1bf Kernel: Add load_keymap syscall and load Finnish keymap in init 2024-01-10 14:46:29 +02:00
Bananymous 8f89519bcf Kernel: Keymaps can now be loaded from files 2024-01-10 14:43:19 +02:00
Bananymous e6d42e5c45 Kernel: Add timeout for device commands on PS/2 devices 2024-01-10 12:51:24 +02:00
Bananymous 961ab9768a Kernel: KeyEvent is now well known keycode 
Keycodes are easier to handle as you need only one keyboard layout
for keycodes. Otherwise you would need to implement keyboard layout
for every keyboard driver in every language.
 2024-01-10 12:51:24 +02:00
Bananymous e4f48cbc73 Kernel: Move PS/2 command queue to controller instead of device 2024-01-09 20:00:19 +02:00
Bananymous d760239748 Kernel: Do a big rewrite of PS/2 code 
Command sending+response reading is now synchronized. This allows
bochs to properly initialize both mouse and keyboard simultaneously.

Also status register is checked EVERY time read/write to other IO
ports is performed.
 2024-01-08 10:50:55 +02:00
Bananymous f0cf54e194 Kernel: Reads from PS/2 keyboard and mouse can be terminated 2024-01-05 12:13:44 +02:00
Bananymous 41ae05dd6e Kernel: Update block_or_eintr API to return ErrorOr<> 2024-01-05 12:13:11 +02:00
Bananymous e45b544a39 Kernel: Implement PS/2 mouse driver 
This is realtively simple driver that queries extensions (scroll +
extra buttons) from mouse and reads mouse packages.
 2024-01-04 12:17:55 +02:00
Bananymous d4191c0d94 Kernel: Reorganize PS/2 files to their own directory 2024-01-04 12:04:45 +02:00
Bananymous c2957d8761 Kernel: PS/2 device automatically sends commands when appended 2024-01-04 12:04:45 +02:00
Bananymous 891ced4da2 Kernel: Move PS2Device to its own file 2024-01-04 12:04:45 +02:00
Bananymous 8f8d6bddc0 Kernel: Unify PS2Device to handle commands instead of inherited 2024-01-04 12:04:45 +02:00
Bananymous d2d12d5281 Kernel: validate_{string,pointer}_access now return ErrorOr<void> 
Now that signals are only processed when returning to userspace,
address validation has to do an early return.
 2024-01-03 23:53:04 +02:00
Bananymous 0ba278041b Kernel: Start exec by loading the ELF file. It might not exist... 2024-01-03 23:50:02 +02:00
Bananymous 001e95f973 Kernel: Optimize sse saving/loading 
Only save and load sse when new thread is trying to execute sse
instruction. There is no need to do that every time we enter kernel.
 2024-01-03 02:06:49 +02:00
Bananymous 9fa13079f2 Kernel: Implement supplementary groups 
This code has very ugly file parsing code. I have to create API
for reading files line by line in kernel space...

This allows users to open framebuffer/input files without root.

Mounting has to be moved to userspace soon. It makes no sense to
hard code permissions for every (device) file.
 2024-01-02 23:24:32 +02:00
Bananymous 96d831c31a Kernel/LibC/Userspace: Implement chown and set tty owner on login 2024-01-02 22:19:38 +02:00
Bananymous 951eac6bfa Kernel: Implement hacky non-block read for ps2 keyboard 2023-12-19 00:20:46 +02:00
Bananymous 2e858fddb5 Kernel: Remove obsolete Scheduler::is_valid_tid() 
This function was used when processes could die at any point in time.
Now that processes can only die in known spots, we can be sure they
are not holding any locks. This allows much more performant locking.
 2023-12-07 13:26:42 +02:00
Bananymous 12474addda Kernel: Make Inodes use the new lock 
Also remove old lock from TTY since it can just use the one Inode
already has.
 2023-12-07 13:19:12 +02:00
Bananymous 7c25e4ce5a Kernel: Implement RecursivePrioritySpinLock 
This locks won't allow locking from userspace thread if there is
kernel thread waiting to lock this.
 2023-12-07 13:18:21 +02:00
Bananymous 1ac831d4b1 Kernel: Add API to block on semaphore until unblock or EINTR 2023-12-06 16:13:07 +02:00
Bananymous 534969df32 Kernel: Scheduler::unblock_thread() wakes sleeping threads 2023-12-06 16:12:37 +02:00
Bananymous 1c78671078 Kernel: Rework all signal code 
Signal handling code was way too complex. Now everything is
simplified and there is no need for ThreadBlockers.

Only complication that this patch includes is that blocking syscalls
have to manually be made interruptable by signal. There might be some
clever solution to combat this is make this happen automatically.
 2023-12-06 13:02:17 +02:00
Bananymous cdcc36efde Kernel: Remove unnecessary raise syscall 2023-12-06 13:00:45 +02:00
Bananymous 336daa2cc5 Kernel: Add helper for checking whether segment is from userspace 2023-12-06 12:57:13 +02:00
Bananymous cc572af390 Kernel: Implement mmaping for framebuffer device 2023-11-28 23:51:56 +02:00
Bananymous 4a87d6052b Kernel: Add API for implementing mmappable devices 2023-11-28 23:50:49 +02:00
Bananymous 09b7cb2f33 Kernel/LibC: Implement pread() 2023-11-28 23:47:30 +02:00
Bananymous 60e755210c Kernel/LibC: Implement very basic msync 2023-11-22 22:44:06 +02:00
Bananymous ab9954fe73 Kernel: Delete the now obsolete VesaTerminalDriver 2023-11-22 21:59:11 +02:00
Bananymous fd18071975 Kernel: Implement TerminalDriver for Framebuffer device 
Use this new FramebufferTerminalDriver for terminal instead of the
old VesaTerminalDriver. Only drawback with this is that framebuffer
device can only be intialized after DevFS is initialized.
 2023-11-22 21:57:17 +02:00
Bananymous b88a7e0c6b Kernel: Add more APIs to FramebufferDevice 2023-11-22 21:56:27 +02:00
Bananymous cdf53f33f6 Kernel: Implement basic framebuffer device 
This allows exposing framebuffer to userspace
 2023-11-22 20:34:41 +02:00
Bananymous bc5e8add19 Kernel: Make Ext2 filesystem use BlockDevice instead of Partition 2023-11-21 15:20:24 +02:00
Bananymous 7a8fd6d04a Kernel: TmpFS doesn't mark any functions as final 
I didn't think these would be overloaded, but they are
 2023-11-21 15:19:34 +02:00
Bananymous b749963b62 Kernel: Add common {read,write}_blocks() api to BlockDevice 2023-11-21 15:19:07 +02:00
Bananymous 6a068fb9f9 Kernel: Move Partition to its own file 2023-11-21 15:16:04 +02:00
Bananymous cadb56d8ba Kernel: ProcFS inodes reflect processes ruid/rgid 
setgid/setuid did not change the permissions of procfs inodes. This
made Shell launched by init not appear in meminfo.
 2023-11-18 14:26:44 +02:00
Bananymous c9e9cfd361 Bootloader: Implement VESA video mode query and pass it to kernel 
Kernel now gets framebuffer from bootloader. Framebuffer dimensions
and bpp are hardcoded in bootloader, but will probably be read from
config file at some point.
 2023-11-17 22:45:35 +02:00
Bananymous cb5a5d3ed1 Kernel/Bootloader: banan-os can now be booted with my bootloader :D 2023-11-17 20:33:02 +02:00
Bananymous 84040e64b8 Kernel: Don't use multiboot2 explicitly. Parse it to common structure 
This allows support of multiple different bootloaders
 2023-11-17 18:54:59 +02:00
Bananymous c084ce8b01 Kernel/LibC: Implement readlink and readlinkat 2023-11-11 23:16:52 +02:00
Bananymous fda0dfec30 Kernel: Make TmpFS enforce max page count. 2023-11-07 16:13:21 +02:00