From: dsugar@tresys.com (David Sugar) Date: Mon, 9 Oct 2017 21:22:58 +0000 Subject: [refpolicy] [PATCH 1/1] policy for systemd-networkd Message-ID: To: refpolicy@oss.tresys.com List-Id: refpolicy.oss.tresys.com Policy needed for systemd-networkd to function. This is based on a patch from krzysztof.a.nowicki at gmail.com that was submitted back in May (I talked to him via email a while ago about me picking up the patch). He was too busy to update and I needed to get it working. I hope I have ordering of interfaces correctly in systemd.if but please comment if something is off and I will correct them. Signed-off-by: Dave Sugar --- policy/modules/system/init.te | 1 + policy/modules/system/sysnetwork.fc | 2 + policy/modules/system/systemd.fc | 3 + policy/modules/system/systemd.if | 116 ++++++++++++++++++++++++++++++++++++ policy/modules/system/systemd.te | 70 ++++++++++++++++++++++ 5 files changed, 192 insertions(+) diff --git a/policy/modules/system/init.te b/policy/modules/system/init.te index df5e1611..2d2eb57e 100644 --- a/policy/modules/system/init.te +++ b/policy/modules/system/init.te @@ -325,6 +325,7 @@ ifdef(`init_systemd',` systemd_manage_passwd_runtime_symlinks(init_t) systemd_use_passwd_agent(init_t) systemd_list_tmpfiles_conf(init_t) + systemd_networkd_use_sock(init_t) systemd_relabelto_tmpfiles_conf_dirs(init_t) systemd_relabelto_tmpfiles_conf_files(init_t) systemd_relabelto_journal_dirs(init_t) diff --git a/policy/modules/system/sysnetwork.fc b/policy/modules/system/sysnetwork.fc index ae4fbea2..91fb5160 100644 --- a/policy/modules/system/sysnetwork.fc +++ b/policy/modules/system/sysnetwork.fc @@ -24,6 +24,8 @@ ifdef(`distro_debian',` /etc/dhcp3(/.*)? gen_context(system_u:object_r:dhcp_etc_t,s0) /etc/dhcp3?/dhclient.* gen_context(system_u:object_r:dhcp_etc_t,s0) +/etc/systemd/network(/.*)? gen_context(system_u:object_r:net_conf_t,s0) + ifdef(`distro_redhat',` /etc/sysconfig/network-scripts/.*resolv\.conf -- gen_context(system_u:object_r:net_conf_t,s0) /etc/sysconfig/networking(/.*)? gen_context(system_u:object_r:net_conf_t,s0) diff --git a/policy/modules/system/systemd.fc b/policy/modules/system/systemd.fc index 57944e1d..56e9bc13 100644 --- a/policy/modules/system/systemd.fc +++ b/policy/modules/system/systemd.fc @@ -23,6 +23,7 @@ /usr/lib/systemd/systemd-localed -- gen_context(system_u:object_r:systemd_locale_exec_t,s0) /usr/lib/systemd/systemd-logind -- gen_context(system_u:object_r:systemd_logind_exec_t,s0) /usr/lib/systemd/systemd-machined -- gen_context(system_u:object_r:systemd_machined_exec_t,s0) +/usr/lib/systemd/systemd-networkd -- gen_context(system_u:object_r:systemd_networkd_exec_t,s0) /usr/lib/systemd/systemd-resolved -- gen_context(system_u:object_r:systemd_resolved_exec_t,s0) /usr/lib/systemd/systemd-user-sessions -- gen_context(system_u:object_r:systemd_sessions_exec_t,s0) @@ -36,6 +37,7 @@ /usr/lib/systemd/system/[^/]*suspend.* -- gen_context(system_u:object_r:power_unit_t,s0) /usr/lib/systemd/system/systemd-backlight.* -- gen_context(system_u:object_r:systemd_backlight_unit_t,s0) /usr/lib/systemd/system/systemd-binfmt.* -- gen_context(system_u:object_r:systemd_binfmt_unit_t,s0) +/usr/lib/systemd/system/systemd-networkd.* gen_context(system_u:object_r:systemd_networkd_unit_t,s0) /var/lib/systemd/backlight(/.*)? gen_context(system_u:object_r:systemd_backlight_var_lib_t,s0) /var/lib/systemd/coredump(/.*)? gen_context(system_u:object_r:systemd_coredump_var_lib_t,s0) @@ -52,6 +54,7 @@ /run/systemd/inhibit(/.*)? gen_context(system_u:object_r:systemd_logind_var_run_t,s0) /run/systemd/nspawn(/.*)? gen_context(system_u:object_r:systemd_nspawn_var_run_t,s0) /run/systemd/machines(/.*)? gen_context(system_u:object_r:systemd_machined_var_run_t,s0) +/run/systemd/netif(/.*)? gen_context(system_u:object_r:systemd_networkd_var_run_t,s0) /run/tmpfiles\.d -d gen_context(system_u:object_r:systemd_tmpfiles_conf_t,s0) /run/tmpfiles\.d/.* <> diff --git a/policy/modules/system/systemd.if b/policy/modules/system/systemd.if index 69669a1a..104eedc3 100644 --- a/policy/modules/system/systemd.if +++ b/policy/modules/system/systemd.if @@ -390,6 +390,122 @@ interface(`systemd_relabelto_journal_files',` ######################################## ## +## Allow domain to read systemd_networkd_t files +## +## +## +## Domain allowed access. +## +## +# +interface(`systemd_read_networkd_files',` + gen_require(` + type systemd_networkd_t; + ') + + init_search_units($1) + list_dirs_pattern($1, systemd_networkd_unit_t, systemd_networkd_unit_t) + read_files_pattern($1, systemd_networkd_unit_t, systemd_networkd_unit_t) +') + +######################################## +## +## Allow domain to create/manage systemd_networkd_t files +## +## +## +## Domain allowed access. +## +## +# +interface(`systemd_manage_networkd_files',` + gen_require(` + type systemd_networkd_unit_t; + ') + + init_search_units($1) + manage_dirs_pattern($1, systemd_networkd_unit_t, systemd_networkd_unit_t) + manage_files_pattern($1, systemd_networkd_unit_t, systemd_networkd_unit_t) +') + +######################################## +## +## Allow specified domain to start systemd-networkd units +## +## +## +## Domain allowed access. +## +## +# +interface(`systemd_startstop_networkd_units',` + gen_require(` + type systemd_networkd_unit_t; + class service { start stop }; + ') + + allow $1 systemd_networkd_unit_t:service { start stop }; +') + +######################################## +## +## Allow specified domain to start systemd-networkd units +## +## +## +## Domain allowed access. +## +## +# +interface(`systemd_status_networkd_units',` + gen_require(` + type systemd_networkd_unit_t; + class service status; + ') + + allow $1 systemd_networkd_unit_t:service status; +') + +####################################### +## +## Relabel systemd_networkd tun socket. +## +## +## +## Domain allowed access. +## +## +# +interface(`systemd_networkd_attach_tun_iface',` + gen_require(` + type systemd_networkd_t; + ') + + allow $1 systemd_networkd_t:tun_socket relabelfrom; + allow $1 self:tun_socket relabelto; +') + +####################################### +## +## Relabel systemd_networkd tun socket. +## +## +## +## Domain allowed access. +## +## +# +interface(`systemd_networkd_use_sock',` + gen_require(` + type systemd_networkd_t; + ') + + allow $1 systemd_networkd_t:netlink_route_socket client_stream_socket_perms; +') + + +######################################## +## ## Allow systemd_logind_t to read process state for cgroup file ## ## diff --git a/policy/modules/system/systemd.te b/policy/modules/system/systemd.te index 166bd4dd..ffa62563 100644 --- a/policy/modules/system/systemd.te +++ b/policy/modules/system/systemd.te @@ -109,6 +109,16 @@ type systemd_machined_var_run_t; files_pid_file(systemd_machined_var_run_t) init_daemon_pid_file(systemd_machined_var_run_t, dir, "machines") +type systemd_networkd_t; +type systemd_networkd_exec_t; +init_system_domain(systemd_networkd_t, systemd_networkd_exec_t) + +type systemd_networkd_unit_t; +init_unit_file(systemd_networkd_unit_t) + +type systemd_networkd_var_run_t; +files_pid_file(systemd_networkd_var_run_t) + type systemd_notify_t; type systemd_notify_exec_t; init_daemon_domain(systemd_notify_t, systemd_notify_exec_t) @@ -516,6 +526,66 @@ optional_policy(` ######################################## # +# networkd local policy +# + +allow systemd_networkd_t self:capability { chown dac_override fowner net_admin net_raw setgid setpcap setuid }; +allow systemd_networkd_t self:netlink_kobject_uevent_socket create_socket_perms; +allow systemd_networkd_t self:netlink_route_socket { create_socket_perms nlmsg_read nlmsg_write }; +allow systemd_networkd_t self:packet_socket create_socket_perms; +allow systemd_networkd_t self:process { getcap setcap setfscreate }; +allow systemd_networkd_t self:rawip_socket create_socket_perms; +allow systemd_networkd_t self:tun_socket { create_socket_perms relabelfrom relabelto }; +allow systemd_networkd_t self:udp_socket create_socket_perms; +allow systemd_networkd_t self:unix_dgram_socket create_socket_perms; + +manage_dirs_pattern(systemd_networkd_t, systemd_networkd_var_run_t, systemd_networkd_var_run_t) +manage_files_pattern(systemd_networkd_t, systemd_networkd_var_run_t, systemd_networkd_var_run_t) +manage_lnk_files_pattern(systemd_networkd_t, systemd_networkd_var_run_t, systemd_networkd_var_run_t) + +kernel_dgram_send(systemd_networkd_t) +kernel_read_system_state(systemd_networkd_t) +kernel_read_kernel_sysctls(systemd_networkd_t) +kernel_read_network_state(systemd_networkd_t) +kernel_request_load_module(systemd_networkd_t) +kernel_rw_net_sysctls(systemd_networkd_t) + +auth_use_nsswitch(systemd_networkd_t) + +corecmd_bin_entry_type(systemd_networkd_t) +corecmd_exec_bin(systemd_networkd_t) + +corenet_rw_tun_tap_dev(systemd_networkd_t) + +dev_read_urand(systemd_networkd_t) +dev_read_sysfs(systemd_networkd_t) +dev_write_kmsg(systemd_networkd_t) + +files_read_etc_files(systemd_networkd_t) + +init_dgram_send(systemd_networkd_t) +init_read_state(systemd_networkd_t) + +logging_send_syslog_msg(systemd_networkd_t) + +miscfiles_read_localization(systemd_networkd_t) + +sysnet_read_config(systemd_networkd_t) + +systemd_log_parse_environment(systemd_networkd_t) + +optional_policy(` + dbus_system_bus_client(systemd_networkd_t) + dbus_connect_system_bus(systemd_networkd_t) +') + +optional_policy(` + udev_read_db(systemd_networkd_t) + udev_read_pid_files(systemd_networkd_t) +') + +######################################## +# # systemd_notify local policy # allow systemd_notify_t self:capability chown; -- 2.13.5