;; Phase 18 (Track E.2) — FILE_IO / path-traversal profile.
;;
;; The strictest of the per-cap profiles: blocks every host secret /
;; user-data path a filesystem-escape payload would target.  Read /
;; write access to system libraries (`/usr`, `/System`, `/Library`) is
;; preserved so the interpreter (python3 / node / java) can cold-start.
;;
;; Sensitive paths denied:
;;   * `/etc/{passwd,master.passwd,shadow,sudoers}` + their
;;     `/private/etc/...` mirrors — host credentials.
;;   * `/Users` — every user's home directory.
;;   * `/var/db` and `/private/var/db` — Open Directory and
;;     opendirectoryd state.
;;   * `/var/log` and `/private/var/log` — system + auth logs.
;;   * `/Library/Keychains` — host keychain databases.
;;
;; Writes outside WORKDIR are denied broadly: a tainted path payload
;; cannot drop files into `/tmp` peers, `/var/folders`, or the user's
;; home.

(version 1)
(allow default)

(deny file-read*
    (literal "/etc/passwd")
    (literal "/etc/master.passwd")
    (literal "/etc/shadow")
    (literal "/etc/sudoers")
    (literal "/private/etc/passwd")
    (literal "/private/etc/master.passwd")
    (literal "/private/etc/shadow")
    (literal "/private/etc/sudoers")
    (subpath "/Users")
    (subpath "/var/db")
    (subpath "/private/var/db")
    (subpath "/var/log")
    (subpath "/private/var/log")
    (subpath "/Library/Keychains"))

;; Writes: deny everything outside WORKDIR + `/dev/null`.  The
;; subpath-allow re-enables WORKDIR after the broad deny.
(deny file-write*
    (subpath "/")
    (with no-log))
(allow file-write*
    (subpath (param "WORKDIR"))
    (literal "/dev/null")
    (literal "/dev/dtracehelper")
    (literal "/dev/stdout")
    (literal "/dev/stderr"))