1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
use std::{
fs::{DirBuilder, File},
io,
};
use nix::{
mount::{self, MsFlags},
sched::{self, CloneFlags},
};
use serde::{Deserialize, Serialize};
use crate::util::{self, ToIOResult};
fn prepare_buildtmp() -> io::Result<()> {
mount::mount::<_, _, _, str>(
Some("buildtmp"),
"build/tmp",
Some("tmpfs"),
MsFlags::empty(),
None,
)
.to_io_result()?;
util::tar::unpack(File::open("build/rootfs.tar")?, "build/tmp/rootfs")?;
DirBuilder::new().create("build/tmp/runc")?;
Ok(())
}
#[derive(Debug, Deserialize, Serialize)]
pub enum Error {
Code(i32),
String(String),
}
impl From<io::Error> for Error {
fn from(error: io::Error) -> Self {
match error.raw_os_error() {
Some(code) => Error::Code(code),
None => Error::String(error.to_string()),
}
}
}
impl From<Error> for io::Error {
fn from(error: Error) -> Self {
match error {
Error::Code(code) => io::Error::from_raw_os_error(code),
Error::String(string) => io::Error::new(io::ErrorKind::Other, string),
}
}
}
pub fn runc_preinit() -> Result<(), Error> {
DirBuilder::new().recursive(true).create("build/state")?;
sched::unshare(CloneFlags::CLONE_NEWUSER | CloneFlags::CLONE_NEWNS).to_io_result()?;
Ok(())
}
pub fn runc_init() -> Result<(), Error> {
prepare_buildtmp()?;
Ok(())
}
|
