Privatae
54 lines
1.2 KiB
Go
54 lines
1.2 KiB
Go
//go:build linux
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package main
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import (
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"os"
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"strconv"
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"strings"
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"time"
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)
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func osProcCwd(pid int) string {
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d, err := os.Readlink("/proc/" + strconv.Itoa(pid) + "/cwd")
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if err != nil {
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return ""
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}
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return d
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}
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func osProcCmdArgs(pid int) []string {
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raw, err := os.ReadFile("/proc/" + strconv.Itoa(pid) + "/cmdline")
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if err != nil {
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return nil
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}
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return splitNul(raw)
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}
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// osProcStarted is the process's start: boot time (/proc/stat btime) plus its
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// start in clock ticks (procIdentity), at the USER_HZ of 100 Linux reports.
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func osProcStarted(pid int) (time.Time, bool) {
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id, _, ok := procIdentity(pid)
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if !ok {
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return time.Time{}, false
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}
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ticks, err := strconv.ParseInt(id, 10, 64)
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if err != nil {
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return time.Time{}, false
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}
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raw, err := os.ReadFile("/proc/stat")
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if err != nil {
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return time.Time{}, false
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}
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for _, line := range strings.Split(string(raw), "\n") {
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if v, ok := strings.CutPrefix(line, "btime "); ok {
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boot, err := strconv.ParseInt(strings.TrimSpace(v), 10, 64)
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if err != nil {
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return time.Time{}, false
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}
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return time.Unix(boot, 0).Add(time.Duration(ticks) * 10 * time.Millisecond), true
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}
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}
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return time.Time{}, false
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}
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