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put everything in one crate

This commit is contained in:
Ryan Heywood 2025-07-11 17:38:32 -04:00
parent 2945c6fb73
commit b5086beb77
Signed by: ryan
GPG Key ID: 8E401478A3FBEF72
8 changed files with 496 additions and 394 deletions
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440
src/aws/Cargo.lock generated Normal file
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65
src/aws/src/lib.rs
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@ -1,65 +0,0 @@
use system::{dmesg, SystemError};
// Signal to Nitro hypervisor that booting was successful
fn nitro_heartbeat() {
use system::socket_connect;
use libc::{write, read, close, AF_VSOCK};
let mut buf: [u8; 1] = [0; 1];
buf[0] = 0xB7; // AWS Nitro heartbeat value
let fd = match socket_connect(AF_VSOCK, 9000, 3) {
Ok(f)=> f,
Err(e)=> {
eprintln!("{}", e);
return
},
};
unsafe {
write(fd, buf.as_ptr() as _, 1);
read(fd, buf.as_ptr() as _, 1);
close(fd);
}
dmesg(format!("Sent NSM heartbeat"));
}
// Get entropy sample from Nitro device
pub fn get_entropy(size: usize) -> Result<Vec<u8>, SystemError> {
use nsm_api::api::ErrorCode;
use nsm_lib::{nsm_get_random, nsm_lib_init};
let nsm_fd = nsm_lib_init();
if nsm_fd < 0 {
return Err(SystemError {
message: String::from("Failed to connect to NSM device")
});
};
let mut dest = Vec::with_capacity(size);
while dest.len() < size {
let mut buf = [0u8; 256];
let mut buf_len = buf.len();
let status = unsafe {
nsm_get_random(nsm_fd, buf.as_mut_ptr(), &mut buf_len)
};
match status {
ErrorCode::Success => {
dest.extend_from_slice(&buf);
},
_ => {
return Err(SystemError {
message: String::from("Failed to get entropy from NSM device")
});
}
};
}
Ok(dest)
}
// Initialize nitro device
pub fn init_platform(){
use system::insmod;
// TODO: error handling
nitro_heartbeat();
match insmod("/nsm.ko") {
Ok(())=> dmesg(format!("Loaded nsm.ko")),
Err(e)=> eprintln!("{}", e)
};
}

323
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2
src/init/Cargo.toml
View File

@ -5,8 +5,6 @@ edition = "2021"
[dependencies]
libc = "0.2.134"
aws = { path = "../aws"}
system = { path = "../system"}
[[bin]]

35
src/init/aws.rs Normal file
View File

@ -0,0 +1,35 @@
use super::system;
use system::dmesg;
// Signal to Nitro hypervisor that booting was successful
fn nitro_heartbeat() {
use system::socket_connect;
use libc::{write, read, close, AF_VSOCK};
let mut buf: [u8; 1] = [0; 1];
buf[0] = 0xB7; // AWS Nitro heartbeat value
let fd = match socket_connect(AF_VSOCK, 9000, 3) {
Ok(f)=> f,
Err(e)=> {
eprintln!("{}", e);
return
},
};
unsafe {
write(fd, buf.as_ptr() as _, 1);
read(fd, buf.as_ptr() as _, 1);
close(fd);
}
dmesg(format!("Sent NSM heartbeat"));
}
// Initialize nitro device
pub fn init_platform(){
use system::insmod;
// TODO: error handling
nitro_heartbeat();
match insmod("/nsm.ko") {
Ok(())=> dmesg(format!("Loaded nsm.ko")),
Err(e)=> eprintln!("{}", e)
};
}

9
src/init/init.rs
View File

@ -1,7 +1,10 @@
mod system;
mod aws;
use system::{seed_entropy, reboot, freopen, mount, dmesg};
//TODO: Feature flag
use aws::{init_platform, get_entropy};
use aws::init_platform;
// Mount common filesystems with conservative permissions
fn init_rootfs() {
@ -46,10 +49,6 @@ fn boot(){
init_rootfs();
init_console();
init_platform();
match seed_entropy(4096, get_entropy) {
Ok(size)=> dmesg(format!("Seeded kernel with entropy: {}", size)),
Err(e)=> eprintln!("{}", e)
};
}
fn main() {

0
src/system/src/lib.rs → src/init/system.rs
View File

16
src/system/Cargo.lock generated Normal file
View File

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# It is not intended for manual editing.
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