On Wed, Jul 10, 2019 at 11:55:20AM +0300, Alexander Miroshnichenko wrote:
> Add a SELinux Reference Policy module for the
> Knot authoritative-only DNS server.
You forgot to make knotc init_system_domain() instead of init_daemon_domain()
also "file" should be plural "files": knot_read_config_files()
>
> Signed-off-by: Alexander Miroshnichenko <alex@xxxxxxxxxxxxxx>
> ---
> policy/modules/roles/sysadm.te | 5 ++
> policy/modules/services/knot.fc | 11 +++
> policy/modules/services/knot.if | 108 ++++++++++++++++++++++++++++
> policy/modules/services/knot.te | 121 ++++++++++++++++++++++++++++++++
> policy/modules/system/init.te | 4 ++
> 5 files changed, 249 insertions(+)
> create mode 100644 policy/modules/services/knot.fc
> create mode 100644 policy/modules/services/knot.if
> create mode 100644 policy/modules/services/knot.te
>
> diff --git a/policy/modules/roles/sysadm.te b/policy/modules/roles/sysadm.te
> index 8f891c83865f..1f986432e2af 100644
> --- a/policy/modules/roles/sysadm.te
> +++ b/policy/modules/roles/sysadm.te
> @@ -550,6 +550,11 @@ optional_policy(`
> keystone_admin(sysadm_t, sysadm_r)
> ')
>
> +optional_policy(`
> + knot_admin(sysadm_t, sysadm_r)
> + knot_run_client(sysadm_t, sysadm_r)
> +')
> +
> optional_policy(`
> kismet_admin(sysadm_t, sysadm_r)
> ')
> diff --git a/policy/modules/services/knot.fc b/policy/modules/services/knot.fc
> new file mode 100644
> index 000000000000..bbf8a3526aeb
> --- /dev/null
> +++ b/policy/modules/services/knot.fc
> @@ -0,0 +1,11 @@
> +/etc/rc\.d/init\.d/knot -- gen_context(system_u:object_r:knot_initrc_exec_t,s0)
> +
> +/etc/knot(/.*)? gen_context(system_u:object_r:knot_conf_t,s0)
> +
> +/usr/sbin/knotd -- gen_context(system_u:object_r:knotd_exec_t,s0)
> +
> +/usr/sbin/knotc -- gen_context(system_u:object_r:knotc_exec_t,s0)
> +
> +/var/lib/knot(/.*)? gen_context(system_u:object_r:knot_var_lib_t,s0)
> +
> +/run/knot(/.*)? gen_context(system_u:object_r:knot_runtime_t,s0)
> diff --git a/policy/modules/services/knot.if b/policy/modules/services/knot.if
> new file mode 100644
> index 000000000000..93285a91a5da
> --- /dev/null
> +++ b/policy/modules/services/knot.if
> @@ -0,0 +1,108 @@
> +## <summary>high-performance authoritative-only DNS server.</summary>
> +
> +########################################
> +## <summary>
> +## Execute knotc in the knotc domain.
> +## </summary>
> +## <param name="domain">
> +## <summary>
> +## Domain allowed to transition.
> +## </summary>
> +## </param>
> +#
> +interface(`knot_domtrans_client',`
> + gen_require(`
> + type knotc_t, knotc_exec_t;
> + ')
> +
> + corecmd_search_bin($1)
> + domtrans_pattern($1, knotc_exec_t, knotc_t)
> +')
> +
> +########################################
> +## <summary>
> +## Execute knotc in the knotc domain, and
> +## allow the specified role the knotc domain.
> +## </summary>
> +## <param name="domain">
> +## <summary>
> +## Domain allowed to transition.
> +## </summary>
> +## </param>
> +## <param name="role">
> +## <summary>
> +## Role allowed access.
> +## </summary>
> +## </param>
> +## <rolecap/>
> +#
> +interface(`knot_run_client',`
> + gen_require(`
> + attribute_role knot_roles;
> + ')
> +
> + knot_domtrans_client($1)
> + roleattribute $2 knot_roles;
> +')
> +
> +########################################
> +## <summary>
> +## Read knot config files.
> +## </summary>
> +## <param name="domain">
> +## <summary>
> +## Domain allowed access.
> +## </summary>
> +## </param>
> +#
> +interface(`knot_read_config_file',`
> + gen_require(`
> + type knot_conf_t;
> + ')
> +
> + read_files_pattern($1, knot_conf_t, knot_conf_t)
> + files_search_etc($1)
> +')
> +
> +########################################
> +## <summary>
> +## All of the rules required to
> +## administrate an knot environment.
> +## </summary>
> +## <param name="domain">
> +## <summary>
> +## Domain allowed access.
> +## </summary>
> +## </param>
> +## <param name="role">
> +## <summary>
> +## Role allowed access.
> +## </summary>
> +## </param>
> +## <rolecap/>
> +#
> +interface(`knot_admin',`
> + gen_require(`
> + type knotc_t, knotd_t, knot_conf_t, knot_initrc_exec_t;
> + type knot_runtime_t, knot_tmp_t, knot_var_lib_t;
> + ')
> +
> + allow $1 knotc_t:process signal_perms;
> + allow $1 knotd_t:process { ptrace signal_perms };
> + ps_process_pattern($1, knotc_t)
> + ps_process_pattern($1, knotd_t)
> +
> + init_startstop_service($1, $2, knotd_t, knot_initrc_exec_t)
> +
> + files_search_etc($1)
> + admin_pattern($1, knot_conf_t)
> +
> + files_search_pids($1)
> + admin_pattern($1, knot_runtime_t)
> +
> + files_search_tmp($1)
> + admin_pattern($1, knot_tmp_t)
> +
> + files_search_var_lib($1)
> + admin_pattern($1, knot_var_lib_t)
> +')
> diff --git a/policy/modules/services/knot.te b/policy/modules/services/knot.te
> new file mode 100644
> index 000000000000..8749bed5c53d
> --- /dev/null
> +++ b/policy/modules/services/knot.te
> @@ -0,0 +1,121 @@
> +policy_module(knot, 1.0.0)
> +
> +########################################
> +#
> +# Declarations
> +#
> +
> +attribute_role knot_roles;
> +
> +type knotd_t;
> +type knotd_exec_t;
> +init_daemon_domain(knotd_t, knotd_exec_t)
> +
> +type knotc_t;
> +type knotc_exec_t;
> +application_domain(knotc_t, knotc_exec_t)
> +init_daemon_domain(knotc_t, knotc_exec_t)
> +role knot_roles types knotc_t;
> +
> +type knot_conf_t;
> +files_config_file(knot_conf_t)
> +
> +type knot_initrc_exec_t;
> +init_script_file(knot_initrc_exec_t)
> +
> +type knot_runtime_t;
> +files_pid_file(knot_runtime_t)
> +
> +type knot_var_lib_t;
> +files_type(knot_var_lib_t)
> +
> +type knot_tmp_t;
> +files_tmp_file(knot_tmp_t)
> +
> +########################################
> +#
> +# knotd local policy
> +#
> +allow knotd_t self:capability { dac_override dac_read_search setgid setpcap setuid };
> +allow knotd_t self:process { signal_perms getcap getsched setsched };
> +allow knotd_t self:tcp_socket create_stream_socket_perms;
> +allow knotd_t self:udp_socket create_socket_perms;
> +allow knotd_t self:unix_stream_socket create_stream_socket_perms;
> +
> +corenet_tcp_bind_generic_node(knotd_t)
> +corenet_udp_bind_generic_node(knotd_t)
> +
> +corenet_sendrecv_dns_server_packets(knotd_t)
> +corenet_tcp_bind_dns_port(knotd_t)
> +corenet_udp_bind_dns_port(knotd_t)
> +# Slave replication
> +corenet_tcp_connect_dns_port(knotd_t)
> +
> +kernel_read_kernel_sysctls(knotd_t)
> +
> +allow knotd_t knot_conf_t:file map;
> +knot_read_config_file(knotd_t)
> +
> +manage_dirs_pattern(knotd_t, knot_runtime_t, knot_runtime_t)
> +manage_files_pattern(knotd_t, knot_runtime_t, knot_runtime_t)
> +manage_lnk_files_pattern(knotd_t, knot_runtime_t, knot_runtime_t)
> +manage_sock_files_pattern(knotd_t, knot_runtime_t, knot_runtime_t)
> +files_pid_filetrans(knotd_t, knot_runtime_t, dir)
> +
> +allow knotd_t knot_tmp_t:file map;
> +allow knotd_t knot_tmp_t:file manage_file_perms;
> +allow knotd_t knot_tmp_t:dir manage_dir_perms;
> +files_tmp_filetrans(knotd_t, knot_tmp_t, { file dir })
> +
> +allow knotd_t knot_var_lib_t:file map;
> +manage_dirs_pattern(knotd_t, knot_var_lib_t, knot_var_lib_t)
> +manage_files_pattern(knotd_t, knot_var_lib_t, knot_var_lib_t)
> +manage_lnk_files_pattern(knotd_t, knot_var_lib_t, knot_var_lib_t)
> +files_var_lib_filetrans(knotd_t, knot_var_lib_t, dir)
> +
> +files_map_etc_files(knotd_t)
> +files_search_var_lib(knotd_t)
> +
> +fs_getattr_xattr_fs(knotd_t)
> +
> +fs_getattr_tmpfs(knotd_t)
> +
> +auth_use_nsswitch(knotd_t)
> +
> +logging_send_syslog_msg(knotd_t)
> +
> +miscfiles_read_localization(knotd_t)
> +
> +########################################
> +#
> +# knotc local policy
> +#
> +allow knotc_t self:capability { dac_override dac_read_search };
> +allow knotc_t self:process signal;
> +
> +stream_connect_pattern(knotc_t, knot_runtime_t, knot_runtime_t, knotd_t)
> +
> +allow knotc_t knot_conf_t:file map;
> +knot_read_config_file(knotc_t)
> +
> +allow knotc_t knot_tmp_t:file map;
> +allow knotc_t knot_tmp_t:file manage_file_perms;
> +allow knotc_t knot_tmp_t:dir manage_dir_perms;
> +files_tmp_filetrans(knotc_t, knot_tmp_t, { file dir })
> +
> +allow knotc_t knot_var_lib_t:file map;
> +manage_dirs_pattern(knotc_t, knot_var_lib_t, knot_var_lib_t)
> +manage_files_pattern(knotc_t, knot_var_lib_t, knot_var_lib_t)
> +manage_lnk_files_pattern(knotc_t, knot_var_lib_t, knot_var_lib_t)
> +
> +files_read_etc_files(knotc_t)
> +files_search_pids(knotc_t)
> +files_search_var_lib(knotc_t)
> +
> +fs_getattr_tmpfs(knotc_t)
> +
> +domain_use_interactive_fds(knotc_t)
> +
> +miscfiles_read_localization(knotc_t)
> +
> +userdom_use_user_ptys(knotc_t)
> diff --git a/policy/modules/system/init.te b/policy/modules/system/init.te
> index f4d27bff3ea2..5824281090ee 100644
> --- a/policy/modules/system/init.te
> +++ b/policy/modules/system/init.te
> @@ -1158,6 +1158,10 @@ optional_policy(`
> kerberos_use(initrc_t)
> ')
>
> +optional_policy(`
> + knot_read_config_file(initrc_t)
> +')
> +
> optional_policy(`
> ldap_read_config(initrc_t)
> ldap_list_db(initrc_t)
> --
> 2.21.0
>
--
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Dominick Grift
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