ShadokOS

Shadokos is a UNIX-like kernel for i386 written entirely in Zig

features

Terminal

• VGA text mode driver
• PS2 driver
• mostly POSIX I/O interface with termios configuration
• vt100 escape codes
• virtual scroll
• themes from gogh
• signal distribution

Memory system

• Higher half kernel
• Buddy allocators for page frame allocation
• on-page-fault mapping
• fast virtual space allocation using double-key AVLs
• virtual page allocation with multiple strategies
• multiple object allocators
  • slab allocator
  • multipool allocator (based on slab allocator)
  • page grained allocator
• allocation fuzzing using multiple strategies
• copy on write

Multitasking

• task switching
• basic scheduler
• virtual space switching
• process table
• signal delivery system
• signal execution
• advanced scheduler
• syscall table

Filesystem

• IDE driver
• file mapping
• ext2 driver

syscall api

kernel modules

ELF execution

Testing

• Serial port interface
• kernel mode CLI
• memory system CI
• build CI
• linter CI