anti 2843aafa1a fix(ssh-capture): hide watcher bash argv and sanitize script header ...

Two leaks remained after the inotifywait argv fix:

1. The bash running journal-relay showed its argv[1] (the script path)
   in /proc/PID/cmdline, producing a line like
     'journal-relay /usr/libexec/udev/journal-relay'
   Apply argv_zap.so to that bash too.

2. argv_zap previously hardcoded PR_SET_NAME to 'kmsg-watch', which was
   wrong for any caller other than inotifywait. The comm name now comes
   from ARGV_ZAP_COMM so each caller can pick its own (kmsg-watch for
   inotifywait, journal-relay for the watcher bash).

3. The capture.sh header started with 'SSH honeypot file-catcher' —
   fatal if an attacker runs 'cat' on it. Rewritten as a plausible
   systemd-journal relay helper; stray 'attacker' / 'honeypot' words
   in mid-script comments stripped too.

2026-04-18 02:06:36 -04:00

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