Privatae
72 lines
2.0 KiB
Go
72 lines
2.0 KiB
Go
//go:build darwin
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package main
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import (
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"strconv"
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"strings"
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)
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// macOS facts for the origin walk: one `ps` sweep with pid, ppid, tty and
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// `comm`. "??" is no terminal.
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//
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// `comm` on macOS is argv[0] — usually a full path, because launchd and dyld
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// exec with one, but chosen by the launcher all the same (Apple's ps maps the
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// comm keyword to just_command, adv_cmds ps/keyword.c:101, which skips the
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// kernel's saved exec_path to reach argv[0]). This file once said it was the
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// kernel's path. Good enough to match the launchd inventory
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// below; never an identity — procExe (agents_darwin.go) is that.
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// No unit: launchd's label for a pid is a per-pid `launchctl procinfo`,
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// too costly for a beat; interval jobs are recognised instead by matching
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// the executable against the launchd inventory (originExtra.ScheduledExes).
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func parsePSFacts(out string) map[int]procFacts {
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m := map[int]procFacts{}
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for _, line := range strings.Split(out, "\n") {
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f := strings.Fields(line)
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if len(f) < 4 {
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continue
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}
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pid, err := strconv.Atoi(f[0])
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if err != nil || pid <= 0 {
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continue
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}
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ppid, _ := strconv.Atoi(f[1])
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exe := strings.Join(f[3:], " ")
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pf := procFacts{PID: pid, PPID: ppid, Comm: binBase(exe), Exe: exe}
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if f[2] != "??" && f[2] != "-" {
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pf.Interactive, pf.Detail = true, "tty "+f[2]
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}
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m[pid] = pf
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}
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return m
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}
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func procFactsReader() func(int) (procFacts, bool) {
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var facts map[int]procFacts
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return func(pid int) (procFacts, bool) {
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if facts == nil {
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facts = map[int]procFacts{}
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if out, err := runTimed("ps", "-axo", "pid=,ppid=,tty=,comm="); err == nil {
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facts = parsePSFacts(string(out))
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}
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}
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f, ok := facts[pid]
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return f, ok
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}
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}
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func originExtras() originExtra {
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exes := map[string]string{}
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entries, _ := scanSchedulers()
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for _, e := range entries {
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if e.Kind != "launchd" || e.Schedule == "" {
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continue
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}
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if argv := strings.Fields(e.Command); len(argv) > 0 {
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exes[strings.ToLower(argv[0])] = e.Name
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}
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}
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return originExtra{ScheduledExes: exes}
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}
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