marvin
37f537184c
main.rs keeps only the CLI definition and command dispatch: - registry.rs: image-name validation + XDG registry path handling (tests) - build.rs: podman mount/unmount, vmlinuz extraction, cpio/gzip initrd - qemu.rs: direct-kernel-boot VM launch No behavior change; cargo fmt/clippy/test pass, build/run paths verified against the mock-vm image.
57 lines
1.7 KiB
Rust
57 lines
1.7 KiB
Rust
//! QEMU: boot a registry entry with qemu-system-x86_64 using direct kernel
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//! boot (-kernel/-initrd).
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use anyhow::{Context, Result, bail};
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use std::process::Command;
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use crate::registry::registry_dir;
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pub(crate) fn run(name: &str) -> Result<()> {
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let reg_dir = registry_dir(name)?;
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let vmlinuz_path = reg_dir.join("vmlinuz");
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let initrd_path = reg_dir.join("initrd");
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if !vmlinuz_path.exists() || !initrd_path.exists() {
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bail!(
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"Registry missing vmlinuz/initrd for '{}'. Run `slim build` first.",
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name
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);
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}
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println!("Booting {} from registry: {}", name, reg_dir.display());
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println!(
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" qemu-system-x86_64 -m 256 -nographic -kernel {} -initrd {} -append 'console=ttyS0'",
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vmlinuz_path.display(),
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initrd_path.display()
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);
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let cmdline = [
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"console=ttyS0,115200",
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"root=/dev/ram0",
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"rw",
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"earlyprintk=serial",
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"nokaslr",
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"raid=noautodetect",
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]
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.join(" ");
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let status = Command::new("qemu-system-x86_64")
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.args(["-m", "1024M"])
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.arg("-kernel")
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.arg(vmlinuz_path.as_os_str())
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.arg("-initrd")
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.arg(initrd_path.as_os_str())
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.args(["-append", &cmdline])
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.args(["-nographic"])
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.status()
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.context("Failed to launch qemu-system-x86_64")?;
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match status.code() {
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Some(0) => println!("QEMU exited cleanly."),
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Some(126) | Some(127) => {
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bail!("Failed to start qemu-system-x86_64 (is it installed and in PATH?)")
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}
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Some(code) => bail!("QEMU exited with code {code}"),
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None => bail!("QEMU terminated by a signal"),
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}
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Ok(())
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}
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