1
0
Fork 0
mirror of https://github.com/moby/moby.git synced 2022-11-09 12:21:53 -05:00
moby--moby/libcontainerd/oom_linux.go

32 lines
752 B
Go
Raw Normal View History

package libcontainerd
import (
"fmt"
"os"
"strconv"
"github.com/opencontainers/runc/libcontainer/system"
"github.com/sirupsen/logrus"
)
func setOOMScore(pid, score int) error {
oomScoreAdjPath := fmt.Sprintf("/proc/%d/oom_score_adj", pid)
f, err := os.OpenFile(oomScoreAdjPath, os.O_WRONLY, 0)
if err != nil {
return err
}
stringScore := strconv.Itoa(score)
_, err = f.WriteString(stringScore)
f.Close()
if os.IsPermission(err) {
// Setting oom_score_adj does not work in an
// unprivileged container. Ignore the error, but log
// it if we appear not to be in that situation.
if !system.RunningInUserNS() {
logrus.Debugf("Permission denied writing %q to %s", stringScore, oomScoreAdjPath)
}
return nil
}
return err
}