github/kata-containers
1
0
Fork 1
mirror of https://github.com/kata-containers/kata-containers.git synced 2025-06-25 15:02:45 +00:00
Code Issues Projects Releases Wiki Activity

agent/rustjail: implement functions to chroot

Browse Source 
Use conditional compilation (#[cfg]) to change chroot behaviour
at compilation time. For example, such function will just return
`Ok(())` when the unit tests are being compiled, otherwise real
chroot operation is performed.

Signed-off-by: Julio Montes <julio.montes@intel.com>
This commit is contained in:
Julio Montes 2020-09-10 11:19:01 -05:00
parent 25c91afbea
commit d79fad2dd8
1 changed files with 9 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
src/agent/rustjail/src/mount.rs
View File

@ -483,6 +483,14 @@ fn parse_mount_table() -> Result<Vec<Info>> {
Ok(infos)
}
#[inline(always)]
fn chroot<P: ?Sized + NixPath>(path: &P) -> Result<(), nix::Error> {
#[cfg(not(test))]
return unistd::chroot(path);
#[cfg(test)]
return Ok(());
}
pub fn ms_move_root(rootfs: &str) -> Result<bool> {
unistd::chdir(rootfs)?;
let mount_infos = parse_mount_table()?;
@ -544,7 +552,7 @@ pub fn ms_move_root(rootfs: &str) -> Result<bool> {
MsFlags::MS_MOVE,
None::<&str>,
)?;
unistd::chroot(".")?;
chroot(".")?;
unistd::chdir("/")?;
Ok(true)