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Code Pull Requests Activity
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7774f56ab6aeddc6db7424b86140864f834e0172
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497 Commits

Author SHA1 Message Date
Bananymous
97c7fc42d1 Kernel: SpinLocks now reschedule if they cannot aquire the lock 
This allows us to not actually spin doing nothing while waiting for
another (not executing) to release the lock. This api won't probably
work when we get to SMP
 2023-06-09 00:53:32 +03:00
Bananymous
7da0627f8e Kernel: Process::exit() now uses the new Scheduler::reschedule() 
We use this new function while waiting for all blocking threads to
resume execution
 2023-06-09 00:49:19 +03:00
Bananymous
27cef23823 Kernel: Scheduler now has reschedule() 
This can be called from anywhere and just causes the scheduler to
schedule the next thread. This is more efficient and verbose version
of Scheduler::set_current_thread_sleeping(0), since we don't have
to wake other threads or do other verifications.
 2023-06-09 00:47:17 +03:00
Bananymous
b7fc2dc3d0 Kenrel: Rename Scheduler::reschedule -> Scheduler::timer_reschedule 2023-06-09 00:41:43 +03:00
Bananymous
8af390e0f6 Kernel: Big commit. Rewrite ELF loading code 
We now load ELF files to VirtualRanges instead of using kmalloc.
We have only a fixed 1 MiB kmalloc for big allocations and this
allows loading files even when they don't fit in there.

This caused me to rewrite the whole ELF loading process since the
loaded ELF is not in memory mapped by every process.

Virtual ranges allow you to zero out the memory and to copy into
them from arbitary byte buffers.
 2023-06-09 00:37:43 +03:00
Bananymous
86f58f60cb LibC: implement setenv, unsetenv, putenv 2023-06-05 22:51:02 +03:00
Bananymous
064ce568c2 Kernel: add basic support for environment variables 
exec functions will search files from PATH
 2023-06-05 22:51:02 +03:00
Bananymous
0b1b4d8f7e Kernel: exec now has better posix errors 2023-06-05 21:12:08 +03:00
Bananymous
b0e9ab0519 Kernel/LibC: pass environ pointer to process 2023-06-05 21:12:08 +03:00
Bananymous
668517a723 Kernel: TTY now actually flushes on ^D 2023-06-05 20:21:46 +03:00
Bananymous
649f08ec78 Kernel: verify that loaded elfs are executable 2023-06-05 19:29:32 +03:00
Bananymous
5425394880 Kernel: TTY now supports CSI s and u 
These are commonly supported values to save and load cursor
position
 2023-06-05 18:19:13 +03:00
Bananymous
9d64dbd5c2 Kernel/LibC: add SYS_STAT and stat(), lstat() 2023-06-05 14:37:14 +03:00
Bananymous
b68d5a5833 Kernel: Add SYS_WAIT 
This syscall waits for a given pid.
 2023-06-04 18:00:52 +03:00
Bananymous
94d2090777 Kernel: fork() now clones current thread 
This is how posix specifies thread cloning during fork
 2023-06-04 17:40:37 +03:00
Bananymous
e97585daf9 Kernel: Process FixedWidthAllocators come now in 4 sizes 2023-06-04 01:26:43 +03:00
Bananymous
924fc2118c Kernel: Allocators are now stored in UniqPtr 
This allows proper memory management, we had some memory leak
 2023-06-04 01:25:57 +03:00
Bananymous
51f4c0c750 Kernel: make load_elf() its own function 2023-06-04 01:24:11 +03:00
Bananymous
37b93da650 Kernel: PhysicalRange maps its nodes to kernel vaddr space 
This keeps the lower half of address space cleaner
 2023-06-04 01:20:47 +03:00
Bananymous
35e739dcdd Kernel: reorder process exit steps 2023-06-04 01:19:04 +03:00
Bananymous
a4cb5d8360 Kernel: Inode/Device detection is done with overridden bool functions 2023-06-03 13:28:15 +03:00
Bananymous
da7f09cf82 Kernel: Heap will return 0 if no free page is available 2023-06-03 02:55:31 +03:00
Bananymous
0166af472b Kernel: DiskCache will try to shrink_to_fit after cache cleanup 2023-06-03 02:55:22 +03:00
Bananymous
884d986bd6 Kernel: DiskCache won't crash when running out of kmalloc memory 2023-06-03 02:36:20 +03:00
Bananymous
59b807189f Kernel: add basic disk cache 
ATADevices now add disk cache to themselves
 2023-06-03 02:23:14 +03:00
Bananymous
fb1c7015b1 Kernel: Shell 'memory' now prints heap memory usage 2023-06-03 02:22:18 +03:00
Bananymous
9bd4d68f9c Kernel: Shell ls and stat now properly show symlinks 2023-06-02 18:22:56 +03:00
Bananymous
633cb4f282 Kernel: VFS now has max link depth of 100 2023-06-02 12:50:40 +03:00
Bananymous
4d4d0e26a9 Kernel: Symlinks are now working 
We still have to implement loop or depth detection
 2023-06-02 11:43:46 +03:00
Bananymous
0ffd2a5c1d Kernel: Shell can now list symlinks 2023-06-01 00:25:53 +03:00
Bananymous
232fdcb82c Kernel: add basic support for symlinks 2023-06-01 00:24:45 +03:00
Bananymous
0ccc23d544 Kernel: Shell opens standard files 2023-05-31 23:14:15 +03:00
Bananymous
02f0239016 Kernel: Cleanup exec code 2023-05-31 22:36:05 +03:00
Bananymous
ab61b49aca Kernel: Add SYS_EXEC syscall 2023-05-31 20:57:33 +03:00
Bananymous
4da1d6fd27 Kernel: Implement Process::exec() 2023-05-31 20:56:29 +03:00
Bananymous
909e847369 Kernel: Move userspace entry functions to Process instead of Thread 2023-05-31 19:31:10 +03:00
Bananymous
9a416e8ae8 Kernel: kmalloc free error prints the pointer 2023-05-31 00:34:56 +03:00
Bananymous
911922c6a3 Kernel: RSDP location is now done with virtual addresses 2023-05-31 00:34:21 +03:00
Bananymous
1f2fd59ad5 Kernel: Physical range now calculates RAM with physical addresses 2023-05-31 00:33:44 +03:00
Bananymous
708d401d2c Kernel: Heap gets multiboot pointer with P2V 2023-05-30 23:57:44 +03:00
Bananymous
3b9d60d7cb Kernel: Remove unused includes of CriticalScope 2023-05-29 21:15:55 +03:00
Bananymous
278b873e89 Kernel: Remove unnecessary usages of PageTableScope 
This should be used as few times as possible since it calls 'cli'
 2023-05-29 21:11:29 +03:00
Bananymous
e640344d7a Kernel: Rename MMU to PageTable 
This is more descriptive name for what it actually represents
 2023-05-29 21:06:09 +03:00
Bananymous
7151bb86a8 Kernel/LibC: opening standard files is done in libc 2023-05-29 20:21:19 +03:00
Bananymous
dd3f34cb2c Kernel: Make RecursiveSpinLock thread safe 
also SpinLock is now implemented with gcc builtins
 2023-05-29 19:38:09 +03:00
Bananymous
0c316ebfb2 Kernel: Add SYS_SLEEP 2023-05-28 22:34:48 +03:00
Bananymous
282bf24f65 Kernel: fork() now copies allocations through FixedWidthAllocator 2023-05-28 21:34:35 +03:00
Bananymous
636c308993 Kernel: fork() now copies allocation done through GeneralAllocator 2023-05-28 20:37:39 +03:00
Bananymous
6fdbe6f9c2 Kernel: Add bareboness fork() function 2023-05-28 18:08:49 +03:00
Bananymous
0129619d9a Kernel: Processes and Threads use VirtualRange memory allocations 2023-05-28 17:48:34 +03:00