API

This document describes the internal kernel API surface of the Kyronix kernel. It is the child of Reference.

Memory

• pmm_alloc - allocate a physical page
• pmm_alloc_zeroed - allocate a zeroed physical page
• pmm_alloc_contiguous - allocate contiguous physical pages
• pmm_free - free a physical page
• vmm_map - map a virtual address
• vmm_unmap - unmap a virtual address
• vmm_protect - set protection flags on a mapping
• vmm_space_new - create a new virtual address space
• vmm_space_free - free a virtual address space
• vmm_switch - switch to a virtual address space
• vmm_fork_user - fork user address space
• kmalloc - kernel memory allocate
• kcalloc - kernel memory calloc
• krealloc - kernel memory reallocate
• kfree - kernel memory free

Process

• proc_alloc - allocate a process
• proc_ref - increment process reference count
• proc_unref - decrement process reference count
• proc_find - find a process by PID (Process ID)
• proc_do_exit - terminate a process
• sched_switch - context switch to another process
• sched_claim_next - claim the next runnable process

Filesystem

• vfs_init - initialize the Virtual File System (VFS)
• vfs_lookup - look up a path in the VFS
• vfs_mount - mount a filesystem
• vfs_node_unref_internal - unreference an internal VFS node
• vfs_sync_all - synchronize all mounted filesystems

Signals

• proc_send_signal - send a signal to a process
• signal_check - check for pending signals

Jail

• jail_init - initialize the jail subsystem
• jail_create - create a new jail
• jail_enter - enter a jail
• jail_remove - remove a jail
• jail_can_see - check if a process can see another process
• jail_host_priv - check if a process has host privileges

Crypto

• chacha20_rng_init - initialize the ChaCha20 random number generator
• chacha20_rng_bytes - generate random bytes

Last reviewed: 2026-07-22