forked from AbleOS/ableos
93 lines
2.4 KiB
Rust
93 lines
2.4 KiB
Rust
use {
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crate::holeybytes::{
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ecah::LogError,
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kernel_services::{block_read, mem_serve},
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Vm,
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},
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alloc::alloc::alloc_zeroed,
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log::{debug, info},
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};
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pub enum MemoryServiceError {
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InvalidMemoryFormat,
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}
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#[derive(Debug)]
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pub enum MemoryQuotaType {
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NoQuota = 0,
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SoftQuota = 1,
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HardQuota = 2,
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KillQuota = 3,
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}
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fn alloc_page(vm: &mut Vm, mem_addr: u64, length: usize) -> Result<(), MemoryServiceError> {
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let mut val = alloc::vec::Vec::new();
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for _ in 0..4096 {
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val.push(0);
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}
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info!("Block address: {:?}", val.as_ptr());
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vm.registers[1] = hbvm::value::Value(val.as_ptr() as u64);
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vm.registers[2] = hbvm::value::Value(4096);
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Ok(())
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}
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pub fn memory_msg_handler(
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vm: &mut Vm,
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mem_addr: u64,
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length: usize,
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) -> Result<(), MemoryServiceError> {
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let mut msg_vec = block_read(mem_addr, length);
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let msg_type = msg_vec[0];
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msg_vec.remove(0);
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match msg_type {
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0 => {
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let page_count = msg_vec[0];
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msg_vec.remove(0);
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// let mptr_raw: [u8; 8] = msg_vec[0..8].try_into().unwrap();
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// let mptr: u64 = u64::from_le_bytes(mptr_raw);
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// log::debug!("Allocating {} pages @ {}", page_count, mptr);
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let mut val = alloc::vec::Vec::new();
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for _ in 0..(page_count as isize * 4096) {
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val.push(0);
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}
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vm.registers[1] = hbvm::value::Value(val.as_ptr() as u64);
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}
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1 => {
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let page_count = msg_vec[0];
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msg_vec.remove(0);
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}
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2 => {
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use MemoryQuotaType::*;
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let quota_type = match msg_vec[0] {
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0 => NoQuota,
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1 => SoftQuota,
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2 => HardQuota,
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3 => KillQuota,
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_ => NoQuota,
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};
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msg_vec.remove(0);
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let hid_raw: [u8; 8] = msg_vec[0..8].try_into().unwrap();
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let hid: u64 = u64::from_le_bytes(hid_raw);
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for _ in 0..8 {
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msg_vec.remove(0);
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}
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let pid_raw: [u8; 8] = msg_vec[0..8].try_into().unwrap();
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let pid: u64 = u64::from_le_bytes(hid_raw);
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for _ in 0..8 {
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msg_vec.remove(0);
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}
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debug!(
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"Setting HID-{:x}:PID-{:x}'s quota type to {:?}",
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hid, pid, quota_type
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)
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}
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_ => {}
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}
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Ok(())
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}
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