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281 lines
8.3 KiB
Common Lisp
281 lines
8.3 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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;;;
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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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(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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(type guix_daemon_exec_t)
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(roletype object_r 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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(type guix_store_content_t)
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(roletype object_r 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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;; 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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;; 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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;; 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 (setattr unlink)))
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(allow guix_daemon_t
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tmp_t
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(dir (create
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rmdir
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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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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 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)))
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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)))
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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 (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 (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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(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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(filesystem (mount)))
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(allow guix_daemon_t
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devpts_t
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(chr_file (setattr getattr)))
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(allow guix_daemon_t
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tmpfs_t
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(filesystem (mount)))
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(allow guix_daemon_t
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tmpfs_t
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(dir (getattr)))
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(allow guix_daemon_t
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proc_t
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(filesystem (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)))
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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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open read write)))
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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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;; 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
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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
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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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;; Access to profiles
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(allow guix_daemon_t
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guix_profiles_t
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(dir (getattr setattr read open)))
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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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;; Socket operations
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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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(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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;; 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 "@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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