kompose/vendor/github.com/opencontainers/runc/libcontainer/system/proc.go
Hang Yan 525b68f027
Go mod (#1305)
* Use go mod instead of glide
* Add `--with-kompose-annotation` flag to allow us to switch it off for tests
* Remove hostpid support (since the newest sdk does not support it)
* Create new test script and fixtures
* Remove replicationcontroller support
2020-08-07 17:25:52 +08:00

28 lines
786 B
Go

package system
import (
"io/ioutil"
"path/filepath"
"strconv"
"strings"
)
// look in /proc to find the process start time so that we can verify
// that this pid has started after ourself
func GetProcessStartTime(pid int) (string, error) {
data, err := ioutil.ReadFile(filepath.Join("/proc", strconv.Itoa(pid), "stat"))
if err != nil {
return "", err
}
parts := strings.Split(string(data), " ")
// the starttime is located at pos 22
// from the man page
//
// starttime %llu (was %lu before Linux 2.6)
// (22) The time the process started after system boot. In kernels before Linux 2.6, this
// value was expressed in jiffies. Since Linux 2.6, the value is expressed in clock ticks
// (divide by sysconf(_SC_CLK_TCK)).
return parts[22-1], nil // starts at 1
}