Samuka007/asterinas
1
0
Fork 0
mirror of https://github.com/asterinas/asterinas.git synced 2025-06-24 09:53:24 +00:00
Code Issues Packages Projects Releases Wiki Activity

Support compressed initramfs image

Browse Source
This commit is contained in:
LI Qing
2023-06-19 16:28:14 +08:00
committed by Tate, Hongliang Tian
parent fba4a9405e
commit d692c102ae
7 changed files with 78 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
services/libs/jinux-std/src/fs/initramfs.rs
View File

@ -2,11 +2,16 @@ use crate::prelude::*;
use super::fs_resolver::{FsPath, FsResolver};
use super::utils::{InodeMode, InodeType};
use core2::io::Read;
use cpio_decoder::{CpioDecoder, FileType};
use libflate::gzip::Decoder as GZipDecoder;
/// Unpack and prepare the fs from the ramdisk CPIO buffer.
pub fn init(ramdisk_buf: &[u8]) -> Result<()> {
let decoder = CpioDecoder::new(ramdisk_buf);
println!("[kernel] unzipping ramdisk.cpio.gz ...");
let unzipped_ramdisk_buf = unzip(ramdisk_buf)?;
println!("[kernel] unzip ramdisk.cpio.gz done");
let decoder = CpioDecoder::new(&unzipped_ramdisk_buf);
let fs = FsResolver::new();
for entry_result in decoder.decode_entries() {
let entry = entry_result?;
@ -50,6 +55,17 @@ pub fn init(ramdisk_buf: &[u8]) -> Result<()> {
}
}
}
println!("[kernel] initramfs is ready");
Ok(())
}
fn unzip(buf: &[u8]) -> Result<Vec<u8>> {
let mut decoder = GZipDecoder::new(buf)
.map_err(|_| Error::with_message(Errno::EINVAL, "invalid gzip buffer"))?;
let mut unzipped_buf = Vec::new();
decoder
.read_to_end(&mut unzipped_buf)
.map_err(|_| Error::with_message(Errno::EINVAL, "invalid gzip buffer"))?;
Ok(unzipped_buf)
}