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etc: SELinux: Add permissions to allow garbage collection.

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There may be an improvement to be made to guix-daemon to avoid some
spurious denial audit messages, as described in the FIXME.

* etc/guix-daemon.cil.in: Add missing rules for guix gc.

Change-Id: I3651c4523528649048c7135fabd3000c8e78b1ff
Signed-off-by: Rutherther <rutherther@ditigal.xyz>
This commit is contained in:
Thiago Jung Bauermann 2025-12-08 01:35:05 -03:00 • committed by Rutherther
parent 1b59b93602
commit 53808b13b8
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1 changed files with 21 additions and 0 deletions
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21
etc/guix-daemon.cil.in
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@ -455,6 +455,27 @@
vnc_port_t vnc_port_t
(tcp_socket (name_bind))) (tcp_socket (name_bind)))
;; 'guix gc' needs to go through /proc entries for all processes that are
;; running. Strictly speaking, it means guix-daemon needs access to all
;; process types in the SELinux policy. In practice, only processes from
;; programs in the /gnu/store are relevant for finding roots for garbage
;; collection. Since Guix currently doesn't install any SELinux policy for
;; its packages, we can assume that all the processes it needs to access run
;; as unconfined_t.
;;
;; FIXME: This doesn't stop 'guix gc' from generating a lot of unnecessary
;; AVC denied audit messages. Perhaps guix-daemon could test whether it has
;; access to the proc entry before trying to access it?
(allow guix_daemon_t
unconfined_t
(dir (search)))
(allow guix_daemon_t
unconfined_t
(file (read)))
(allow guix_daemon_t
unconfined_t
(lnk_file (read)))
;; I guess sometimes it needs random numbers ;; I guess sometimes it needs random numbers
(allow guix_daemon_t (allow guix_daemon_t
random_device_t random_device_t