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1807632393
* etc/guix-daemon.cil.in (guix_daemon): Permit more operations required for various build jobs.
450 lines
14 KiB
Common Lisp
450 lines
14 KiB
Common Lisp
; -*- lisp -*-
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;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2018 Ricardo Wurmus <rekado@elephly.net>
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;;; Copyright © 2020 Daniel Brooks <db48x@db48x.net>
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;;; Copyright © 2020 Marius Bakke <marius@gnu.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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;; This is a specification for SELinux 2.7 written in the SELinux Common
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;; Intermediate Language (CIL). It refers to types that must be defined in
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;; the system's base policy.
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;; If you, like me, need advice about fixing an SELinux policy, I recommend
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;; reading https://danwalsh.livejournal.com/55324.html
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;; In particular, you can run semanage permissive -a guix_daemon.guix_daemon_t
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;; to allow guix-daemon to do whatever it wants. SELinux will still check its
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;; permissions, and when it doesn't have permission it will still send an
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;; audit message to your system logs. This lets you know what permissions it
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;; ought to have. Use ausearch --raw to find the permissions violations, then
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;; pipe that to audit2allow to generate an updated policy. You'll still need
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;; to translate that policy into CIL in order to update this file, but that's
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;; fairly straight-forward. Annoying, but easy.
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(block guix_daemon
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;; Require existing types
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(typeattributeset cil_gen_require init_t)
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(typeattributeset cil_gen_require tmp_t)
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(typeattributeset cil_gen_require nscd_var_run_t)
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(typeattributeset cil_gen_require var_log_t)
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(typeattributeset cil_gen_require domain)
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;; Declare own types
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(type guix_daemon_t)
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(roletype object_r guix_daemon_t)
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(type guix_daemon_conf_t)
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(roletype object_r guix_daemon_conf_t)
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(typeattributeset file_type guix_daemon_conf_t)
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(type guix_daemon_exec_t)
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(roletype object_r guix_daemon_exec_t)
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(typeattributeset file_type guix_daemon_exec_t)
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(type guix_daemon_socket_t)
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(roletype object_r guix_daemon_socket_t)
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(typeattributeset file_type guix_daemon_socket_t)
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(type guix_store_content_t)
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(roletype object_r guix_store_content_t)
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(typeattributeset file_type guix_store_content_t)
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(type guix_profiles_t)
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(roletype object_r guix_profiles_t)
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(typeattributeset file_type guix_profiles_t)
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;; These types are domains, thereby allowing process rules
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(typeattributeset domain (guix_daemon_t guix_daemon_exec_t))
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(level low (s0))
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;; When a process in init_t or guix_store_content_t spawns a
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;; guix_daemon_exec_t process, let it run in the guix_daemon_t context
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(typetransition init_t guix_daemon_exec_t
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process guix_daemon_t)
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(typetransition guix_store_content_t guix_daemon_exec_t
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process guix_daemon_t)
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(roletype system_r guix_daemon_t)
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;; allow init_t to read and execute guix files
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(allow init_t
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guix_profiles_t
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(lnk_file (read)))
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(allow init_t
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guix_daemon_exec_t
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(file (execute)))
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(allow init_t
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guix_daemon_t
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(process (transition)))
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(allow init_t
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guix_store_content_t
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(lnk_file (read)))
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(allow init_t
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guix_store_content_t
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(file (open read execute)))
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;; guix-daemon needs to know the names of users
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(allow guix_daemon_t
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passwd_file_t
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(file (getattr open read)))
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;; Permit communication with NSCD
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(allow guix_daemon_t
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nscd_var_run_t
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(file (map read)))
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(allow guix_daemon_t
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nscd_var_run_t
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(dir (search)))
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(allow guix_daemon_t
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nscd_var_run_t
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(sock_file (write)))
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(allow guix_daemon_t
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nscd_t
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(fd (use)))
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(allow guix_daemon_t
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nscd_t
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(unix_stream_socket (connectto)))
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(allow guix_daemon_t nscd_t
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(nscd (getgrp gethost getpwd getserv shmemgrp shmemhost shmempwd shmemserv)))
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;; permit downloading packages via HTTP(s)
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(allow guix_daemon_t http_port_t
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(tcp_socket (name_connect)))
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(allow guix_daemon_t ftp_port_t
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(tcp_socket (name_connect)))
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(allow guix_daemon_t ephemeral_port_t
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(tcp_socket (name_connect)))
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;; Permit logging and temp file access
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(allow guix_daemon_t
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tmp_t
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(lnk_file (create rename setattr unlink)))
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(allow guix_daemon_t
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tmp_t
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(file (link
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rename create execute execute_no_trans write
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unlink setattr map relabelto relabelfrom)))
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(allow guix_daemon_t
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tmp_t
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(fifo_file (open read write create getattr ioctl setattr unlink)))
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(allow guix_daemon_t
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tmp_t
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(dir (create rename
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rmdir relabelto relabelfrom reparent
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add_name remove_name
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open read write
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getattr setattr
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search)))
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(allow guix_daemon_t
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tmp_t
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(sock_file (create getattr setattr unlink write)))
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(allow guix_daemon_t
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var_log_t
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(file (create getattr open write)))
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(allow guix_daemon_t
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var_log_t
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(dir (getattr create write add_name)))
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(allow guix_daemon_t
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var_run_t
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(lnk_file (read)))
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(allow guix_daemon_t
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var_run_t
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(dir (search)))
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;; Spawning processes, execute helpers
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(allow guix_daemon_t
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self
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(process (fork execmem setrlimit setpgid setsched)))
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(allow guix_daemon_t
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guix_daemon_exec_t
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(file (execute execute_no_trans read open entrypoint map)))
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;; TODO: unknown
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(allow guix_daemon_t
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root_t
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(dir (mounton)))
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(allow guix_daemon_t
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fs_t
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(filesystem (getattr)))
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(allow guix_daemon_conf_t
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fs_t
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(filesystem (associate)))
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;; Build isolation
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(allow guix_daemon_t
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guix_store_content_t
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(file (ioctl mounton)))
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(allow guix_store_content_t
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fs_t
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(filesystem (associate)))
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(allow guix_daemon_t
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guix_store_content_t
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(dir (read mounton)))
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(allow guix_daemon_t
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guix_daemon_t
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(capability (net_admin
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fsetid fowner
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chown setuid setgid
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dac_override dac_read_search
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sys_chroot
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sys_admin)))
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(allow guix_daemon_t
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fs_t
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(filesystem (unmount)))
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(allow guix_daemon_t
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devpts_t
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(dir (search)))
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(allow guix_daemon_t
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devpts_t
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(filesystem (mount)))
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(allow guix_daemon_t
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devpts_t
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(chr_file (ioctl open read write setattr getattr)))
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(allow guix_daemon_t
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tmpfs_t
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(filesystem (getattr mount)))
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(allow guix_daemon_t
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tmpfs_t
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(file (create open read unlink write)))
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(allow guix_daemon_t
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tmpfs_t
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(dir (getattr add_name remove_name write)))
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(allow guix_daemon_t
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proc_t
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(file (getattr open read)))
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(allow guix_daemon_t
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proc_t
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(dir (read)))
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(allow guix_daemon_t
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proc_t
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(filesystem (associate mount)))
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(allow guix_daemon_t
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null_device_t
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(chr_file (getattr open read write)))
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(allow guix_daemon_t
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kvm_device_t
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(chr_file (getattr)))
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(allow guix_daemon_t
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zero_device_t
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(chr_file (getattr)))
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(allow guix_daemon_t
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urandom_device_t
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(chr_file (getattr)))
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(allow guix_daemon_t
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random_device_t
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(chr_file (getattr)))
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(allow guix_daemon_t
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devtty_t
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(chr_file (getattr)))
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;; Access to store items
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(allow guix_daemon_t
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guix_store_content_t
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(dir (reparent
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create
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getattr setattr
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search rename
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add_name remove_name
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open write
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rmdir relabelfrom)))
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(allow guix_daemon_t
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guix_store_content_t
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(file (create
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lock
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setattr getattr
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execute execute_no_trans
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link unlink
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map
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rename
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append
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open read write relabelfrom)))
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(allow guix_daemon_t
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guix_store_content_t
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(lnk_file (create
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getattr setattr
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link unlink
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read
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rename)))
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(allow guix_daemon_t
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guix_store_content_t
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(fifo_file (create getattr open read unlink write)))
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(allow guix_daemon_t
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guix_store_content_t
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(sock_file (create getattr setattr unlink write)))
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;; Access to configuration files and directories
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(allow guix_daemon_t
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guix_daemon_conf_t
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(dir (search create
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setattr getattr
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add_name remove_name
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open read write)))
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(allow guix_daemon_t
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guix_daemon_conf_t
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(file (create rename
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lock
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map
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getattr setattr
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unlink
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open read write)))
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(allow guix_daemon_t
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guix_daemon_conf_t
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(lnk_file (create getattr rename unlink)))
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(allow guix_daemon_t net_conf_t
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(file (getattr open read)))
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(allow guix_daemon_t net_conf_t
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(lnk_file (read)))
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(allow guix_daemon_t NetworkManager_var_run_t
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(dir (search)))
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;; Access to profiles
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(allow guix_daemon_t
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guix_profiles_t
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(dir (search getattr setattr read write open create add_name)))
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(allow guix_daemon_t
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guix_profiles_t
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(lnk_file (read getattr)))
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;; Access to profile links in the home directory
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;; TODO: allow access to profile links *anywhere* on the filesystem
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(allow guix_daemon_t
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user_home_t
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(lnk_file (read getattr)))
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(allow guix_daemon_t
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user_home_t
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(dir (search)))
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(allow guix_daemon_t
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cache_home_t
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(dir (search)))
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;; self upgrades
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(allow guix_daemon_t
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self
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(dir (add_name write)))
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(allow guix_daemon_t
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self
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(netlink_route_socket (bind create getattr nlmsg_read read write getopt)))
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;; Socket operations
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(allow guix_daemon_t
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guix_daemon_socket_t
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(sock_file (unlink)))
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(allow guix_daemon_t
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init_t
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(fd (use)))
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(allow guix_daemon_t
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init_t
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(unix_stream_socket (write)))
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(allow guix_daemon_t
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guix_daemon_conf_t
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(unix_stream_socket (listen)))
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(allow guix_daemon_t
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guix_daemon_conf_t
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(sock_file (create unlink)))
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(allow guix_daemon_t
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self
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(unix_stream_socket (create
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read write
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connect bind accept
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getopt setopt)))
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(allow guix_daemon_t
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self
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(tcp_socket (accept listen bind connect create setopt getopt getattr ioctl read write shutdown)))
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(allow guix_daemon_t
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unreserved_port_t
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(tcp_socket (name_bind name_connect accept listen)))
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(allow guix_daemon_t
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self
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(udp_socket (connect getattr bind getopt setopt read write)))
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(allow guix_daemon_t
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self
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(fifo_file (write read)))
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(allow guix_daemon_t
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self
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(udp_socket (ioctl create)))
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(allow guix_daemon_t
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self
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(unix_stream_socket (connectto)))
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(allow guix_daemon_t
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self
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(unix_dgram_socket (create bind connect sendto read write)))
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;; For some esoteric build jobs (i.e. running PostgreSQL, etc).
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(allow guix_daemon_t
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self
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(capability (kill)))
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(allow guix_daemon_t
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node_t
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(tcp_socket (node_bind)))
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(allow guix_daemon_t
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node_t
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(udp_socket (node_bind)))
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(allow guix_daemon_t
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port_t
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(tcp_socket (name_connect)))
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(allow guix_daemon_t
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tmpfs_t
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(file (map read write link getattr)))
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(allow guix_daemon_t
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usermodehelper_t
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(file (read)))
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(allow guix_daemon_t
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hugetlbfs_t
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(file (map read write)))
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(allow guix_daemon_t
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proc_net_t
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(file (read)))
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(allow guix_daemon_t
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postgresql_port_t
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(tcp_socket (name_connect name_bind)))
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(allow guix_daemon_t
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rtp_media_port_t
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(udp_socket (name_bind)))
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(allow guix_daemon_t
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vnc_port_t
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(tcp_socket (name_bind)))
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;; I guess sometimes it needs random numbers
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(allow guix_daemon_t
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random_device_t
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(chr_file (read)))
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;; guix system vm
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(allow guix_daemon_t
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kvm_device_t
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(chr_file (ioctl open read write)))
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(allow guix_daemon_t
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kernel_t
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(system (ipc_info)))
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;; Label file system
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(filecon "@guix_sysconfdir@/guix(/.*)?"
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any (system_u object_r guix_daemon_conf_t (low low)))
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(filecon "@guix_localstatedir@/guix(/.*)?"
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any (system_u object_r guix_daemon_conf_t (low low)))
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(filecon "@guix_localstatedir@/guix/profiles(/.*)?"
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any (system_u object_r guix_profiles_t (low low)))
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(filecon "/gnu"
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dir (unconfined_u object_r guix_store_content_t (low low)))
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(filecon "@storedir@(/.+)?"
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any (unconfined_u object_r guix_store_content_t (low low)))
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(filecon "@storedir@/[^/]+/.+"
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any (unconfined_u object_r guix_store_content_t (low low)))
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(filecon "@prefix@/bin/guix-daemon"
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file (system_u object_r guix_daemon_exec_t (low low)))
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(filecon "@storedir@/.+-(guix-.+|profile)/bin/guix-daemon"
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file (system_u object_r guix_daemon_exec_t (low low)))
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(filecon "@storedir@/[a-z0-9]+-guix-daemon"
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file (system_u object_r guix_daemon_exec_t (low low)))
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(filecon "@guix_localstatedir@/guix/daemon-socket/socket"
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any (system_u object_r guix_daemon_socket_t (low low))))
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