Privatae
32 lines
836 B
Go
32 lines
836 B
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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)
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// osProcIdentity reads /proc/<pid>/stat: field 22 (starttime, in clock ticks
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// since boot) is the identity — a reused pid has a later one — and field 3
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// (state) says whether the process is already stopped ('T', or 't' when
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// stopped by a tracer). Parsed after the LAST ')' so a name containing spaces
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// or parentheses cannot shift the fields.
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func osProcIdentity(pid int) (id string, stopped bool, ok bool) {
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raw, err := os.ReadFile("/proc/" + strconv.Itoa(pid) + "/stat")
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if err != nil {
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return "", false, false
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}
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s := string(raw)
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i := strings.LastIndex(s, ")")
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if i < 0 || i+2 > len(s) {
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return "", false, false
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}
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f := strings.Fields(s[i+2:])
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if len(f) < 20 {
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return "", false, false
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}
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return f[19], f[0] == "T" || f[0] == "t", true
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}
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