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Handle the case when systemd lives under /init.scope

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Signed-off-by: Chris Kim <oats87g@gmail.com>
This commit is contained in:
Chris Kim 2020-12-08 10:26:54 -08:00
parent e71e11fed0
commit 3d1e40eaa3
1 changed files with 2 additions and 1 deletions
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3
pkg/daemons/agent/agent.go
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@ -200,6 +200,7 @@ func checkCgroups() (root string, hasCFS bool, hasPIDs bool) {
// Examine process ID 1 to see if there is a cgroup assigned to it.
// When we are not in a container, process 1 is likely to be systemd or some other service manager.
// It either lives at `/` or `/init.scope` according to https://man7.org/linux/man-pages/man7/systemd.special.7.html
// When containerized, process 1 will be generally be in a cgroup, otherwise, we may be running in
// a host PID scenario but we don't support this.
g, err := os.Open("/proc/1/cgroup")
@ -218,7 +219,7 @@ func checkCgroups() (root string, hasCFS bool, hasPIDs bool) {
for _, system := range systems {
if system == "name=systemd" {
last := parts[len(parts)-1]
if last != "/" {
if last != "/" && last != "/init.scope" {
root = "/systemd"
}
}