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| 1 | //go:build linux |
| 2 | |
| 3 | package hostexec |
| 4 | |
| 5 | import ( |
| 6 | "golang.org/x/sys/unix" |
| 7 | "os" |
| 8 | "strings" |
| 9 | "time" |
| 10 | ) |
| 11 | |
| 12 | type SystemClock struct{} |
| 13 | |
| 14 | func (SystemClock) Now() (time.Time, int64, error) { |
| 15 | var ts unix.Timespec |
| 16 | if err := unix.ClockGettime(unix.CLOCK_BOOTTIME, &ts); err != nil { |
| 17 | return time.Time{}, 0, err |
| 18 | } |
| 19 | return time.Now(), ts.Nano(), nil |
| 20 | } |
| 21 | func (SystemClock) After(d time.Duration) <-chan time.Time { return time.After(d) } |
| 22 | func BootID() (string, error) { |
| 23 | b, err := os.ReadFile("/proc/sys/kernel/random/boot_id") |
| 24 | if err != nil { |
| 25 | return "", err |
| 26 | } |
| 27 | id := strings.TrimSpace(string(b)) |
| 28 | if !validID(id) { |
| 29 | return "", ErrState |
| 30 | } |
| 31 | return id, nil |
| 32 | } |
| 33 | |
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