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Refine the name about initramfs

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The bootloader loads the initramfs, then the kernel unpacks it to rootfs.
This commit is contained in:
LI Qing
2023-08-01 10:52:41 +08:00
committed by Tate, Hongliang Tian
parent 55267f0d81
commit 7de44a0e0e
7 changed files with 39 additions and 25 deletions
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13
services/libs/jinux-std/src/fs/fs_resolver.rs
View File

@ -3,16 +3,11 @@ use alloc::str;
use super::file_table::FileDescripter;
use super::inode_handle::InodeHandle;
use super::ramfs::RamFS;
use super::rootfs::root_mount;
use super::utils::{
AccessMode, CreationFlags, Dentry, InodeMode, InodeType, MountNode, StatusFlags, PATH_MAX,
SYMLINKS_MAX,
AccessMode, CreationFlags, Dentry, InodeMode, InodeType, StatusFlags, PATH_MAX, SYMLINKS_MAX,
};
lazy_static! {
static ref ROOT_MOUNT: Arc<MountNode> = MountNode::new_root(RamFS::new(true)).unwrap();
}
#[derive(Debug)]
pub struct FsResolver {
root: Arc<Dentry>,
@ -31,8 +26,8 @@ impl Clone for FsResolver {
impl FsResolver {
pub fn new() -> Self {
Self {
root: ROOT_MOUNT.root_dentry().clone(),
cwd: ROOT_MOUNT.root_dentry().clone(),
root: root_mount().root_dentry().clone(),
cwd: root_mount().root_dentry().clone(),
}
}

2
services/libs/jinux-std/src/fs/mod.rs
View File

@ -3,9 +3,9 @@ pub mod epoll;
pub mod file_handle;
pub mod file_table;
pub mod fs_resolver;
pub mod initramfs;
pub mod inode_handle;
pub mod pipe;
pub mod procfs;
pub mod ramfs;
pub mod rootfs;
pub mod utils;

31
services/libs/jinux-std/src/fs/initramfs.rs → services/libs/jinux-std/src/fs/rootfs.rs
View File

@ -3,18 +3,21 @@ use crate::prelude::*;
use super::fs_resolver::{FsPath, FsResolver};
use super::procfs::ProcFS;
use super::ramfs::RamFS;
use super::utils::{InodeMode, InodeType};
use super::utils::{InodeMode, InodeType, MountNode};
use cpio_decoder::{CpioDecoder, FileType};
use lending_iterator::LendingIterator;
use libflate::gzip::Decoder as GZipDecoder;
use spin::Once;
/// Unpack and prepare the fs from the ramdisk CPIO buffer.
pub fn init(gzip_ramdisk_buf: &[u8]) -> Result<()> {
println!("[kernel] unzipping ramdisk.cpio.gz ...");
/// Unpack and prepare the rootfs from the initramfs CPIO buffer.
pub fn init(initramfs_buf: &[u8]) -> Result<()> {
init_root_mount()?;
println!("[kernel] unpacking the initramfs.cpio.gz to rootfs ...");
let fs = FsResolver::new();
let mut decoder = CpioDecoder::new(
GZipDecoder::new(gzip_ramdisk_buf)
GZipDecoder::new(initramfs_buf)
.map_err(|_| Error::with_message(Errno::EINVAL, "invalid gzip buffer"))?,
);
@ -74,7 +77,23 @@ pub fn init(gzip_ramdisk_buf: &[u8]) -> Result<()> {
// Mount DevFS
let dev_dentry = fs.lookup(&FsPath::try_from("/dev")?)?;
dev_dentry.mount(RamFS::new(false))?;
println!("[kernel] initramfs is ready");
println!("[kernel] rootfs is ready");
Ok(())
}
static ROOT_MOUNT: Once<Arc<MountNode>> = Once::new();
fn init_root_mount() -> Result<()> {
ROOT_MOUNT.try_call_once(|| -> Result<Arc<MountNode>> {
let rootfs = RamFS::new(true);
let root_mount = MountNode::new_root(rootfs)?;
Ok(root_mount)
})?;
Ok(())
}
pub fn root_mount() -> &'static Arc<MountNode> {
ROOT_MOUNT.get().unwrap()
}