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Merge pull request #121 from justxuewei/devices

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Minor changes for cgroup and devices subsystem
This commit is contained in:
Tim Zhang
2023-08-01 19:46:06 +08:00
committed by GitHub
parent df347c1db8 55505e0b3e
commit f55bdb1775
2 changed files with 22 additions and 3 deletions
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9
src/cgroup.rs
View File

@@ -74,7 +74,7 @@ impl Cgroup {
}
/// Create this control group.
fn create(&self) -> Result<()> {
pub fn create(&self) -> Result<()> {
if self.hier.v2() {
create_v2_cgroup(self.hier.root(), &self.path, &self.specified_controllers)
} else {
@@ -492,6 +492,13 @@ impl Cgroup {
v.dedup();
v
}
/// Checks if the cgroup exists.
///
/// Returns true if at least one subsystem exists.
pub fn exists(&self) -> bool {
self.subsystems().iter().any(|e| e.to_controller().exists())
}
}
pub const UNIFIED_MOUNTPOINT: &str = "/sys/fs/cgroup";

16
src/devices.rs
View File

@@ -239,7 +239,13 @@ impl DevicesController {
let final_str = format!("{} {}:{} {}", devtype.to_char(), major, minor, perms);
self.open_path("devices.allow", true).and_then(|mut file| {
file.write_all(final_str.as_ref()).map_err(|e| {
Error::with_cause(WriteFailed("devices.allow".to_string(), final_str), e)
Error::with_cause(
WriteFailed(
self.get_path().join("devices.allow").display().to_string(),
final_str,
),
e,
)
})
})
}
@@ -272,7 +278,13 @@ impl DevicesController {
let final_str = format!("{} {}:{} {}", devtype.to_char(), major, minor, perms);
self.open_path("devices.deny", true).and_then(|mut file| {
file.write_all(final_str.as_ref()).map_err(|e| {
Error::with_cause(WriteFailed("devices.deny".to_string(), final_str), e)
Error::with_cause(
WriteFailed(
self.get_path().join("devices.deny").display().to_string(),
final_str,
),
e,
)
})
})
}