commit: 405b164fb380ec576ac7b278436180f2df4efbdc
Author: Deepak Rawat <drawat.floss <AT> gmail <DOT> com>
AuthorDate: Mon Oct 5 18:18:28 2020 +0000
Commit: Jason Zaman <perfinion <AT> gentoo <DOT> org>
CommitDate: Sun Oct 11 21:14:40 2020 +0000
URL:
https://gitweb.gentoo.org/proj/hardened-refpolicy.git/commit/?id=405b164f
Add selinux-policy for systemd-pstore service
systemd-pstore is a service to archive contents of pstore.
Signed-off-by: Deepak Rawat <drawat.floss <AT> gmail.com>
Signed-off-by: Jason Zaman <perfinion <AT> gentoo.org>
policy/modules/kernel/devices.if | 26 +++++++++++++++++
policy/modules/kernel/filesystem.if | 58 +++++++++++++++++++++++++++++++++++++
policy/modules/system/systemd.fc | 2 ++
policy/modules/system/systemd.te | 37 +++++++++++++++++++++++
4 files changed, 123 insertions(+)
diff --git a/policy/modules/kernel/devices.if b/policy/modules/kernel/devices.if
index f1808c5c..1fae36ed 100644
--- a/policy/modules/kernel/devices.if
+++ b/policy/modules/kernel/devices.if
@@ -4499,6 +4499,32 @@ interface(`dev_read_sysfs',`
list_dirs_pattern($1, sysfs_t, sysfs_t)
')
+########################################
+## <summary>
+## Write to hardware state information.
+## </summary>
+## <desc>
+## <p>
+## Allow the specified domain to write to the sysfs
+## filesystem.
+## </p>
+## </desc>
+## <param name="domain">
+## <summary>
+## Domain allowed access.
+## </summary>
+## </param>
+## <infoflow type="read" weight="10"/>
+#
+interface(`dev_write_sysfs',`
+ gen_require(`
+ type sysfs_t;
+ ')
+
+ list_dirs_pattern($1, sysfs_t, sysfs_t)
+ write_files_pattern($1, sysfs_t, sysfs_t)
+')
+
########################################
## <summary>
## Allow caller to modify hardware state information.
diff --git a/policy/modules/kernel/filesystem.if
b/policy/modules/kernel/filesystem.if
index 79e87e0f..aa855bd0 100644
--- a/policy/modules/kernel/filesystem.if
+++ b/policy/modules/kernel/filesystem.if
@@ -3868,6 +3868,64 @@ interface(`fs_relabel_pstore_dirs',`
relabel_dirs_pattern($1, pstore_t, pstore_t)
')
+########################################
+## <summary>
+## List the directories
+## of a pstore filesystem.
+## </summary>
+## <param name="domain">
+## <summary>
+## Domain allowed access.
+## </summary>
+## </param>
+#
+interface(`fs_list_pstore_dirs',`
+ gen_require(`
+ type pstore_t;
+ ')
+
+ allow $1 pstore_t:dir list_dir_perms;
+ dev_search_sysfs($1)
+')
+
+########################################
+## <summary>
+## Read pstore_t files
+## </summary>
+## <param name="domain">
+## <summary>
+## Domain allowed access.
+## </summary>
+## </param>
+#
+interface(`fs_read_pstore_files',`
+ gen_require(`
+ type pstore_t;
+ ')
+
+ allow $1 pstore_t:file read_file_perms;
+')
+
+########################################
+## <summary>
+## Delete the files
+## of a pstore filesystem.
+## </summary>
+## <param name="domain">
+## <summary>
+## Domain allowed access.
+## </summary>
+## </param>
+#
+interface(`fs_delete_pstore_files',`
+ gen_require(`
+ type pstore_t;
+ ')
+
+ delete_files_pattern($1, pstore_t, pstore_t)
+ dev_search_sysfs($1)
+')
+
########################################
## <summary>
## Allow the type to associate to ramfs filesystems.
diff --git a/policy/modules/system/systemd.fc b/policy/modules/system/systemd.fc
index f61850b2..34637068 100644
--- a/policy/modules/system/systemd.fc
+++ b/policy/modules/system/systemd.fc
@@ -33,6 +33,7 @@
/usr/lib/systemd/systemd-machined --
gen_context(system_u:object_r:systemd_machined_exec_t,s0)
/usr/lib/systemd/systemd-modules-load --
gen_context(system_u:object_r:systemd_modules_load_exec_t,s0)
/usr/lib/systemd/systemd-networkd --
gen_context(system_u:object_r:systemd_networkd_exec_t,s0)
+/usr/lib/systemd/systemd-pstore --
gen_context(system_u:object_r:systemd_pstore_exec_t,s0)
/usr/lib/systemd/systemd-resolved --
gen_context(system_u:object_r:systemd_resolved_exec_t,s0)
/usr/lib/systemd/systemd-rfkill --
gen_context(system_u:object_r:systemd_rfkill_exec_t,s0)
/usr/lib/systemd/systemd-update-done --
gen_context(system_u:object_r:systemd_update_done_exec_t,s0)
@@ -57,6 +58,7 @@
/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)
/var/lib/systemd/linger(/.*)?
gen_context(system_u:object_r:systemd_logind_var_lib_t,s0)
+/var/lib/systemd/pstore(/.*)?
gen_context(system_u:object_r:systemd_pstore_var_lib_t,s0)
/var/lib/systemd/rfkill(/.*)?
gen_context(system_u:object_r:systemd_rfkill_var_lib_t,s0)
/run/\.nologin[^/]* --
gen_context(system_u:object_r:systemd_sessions_runtime_t,s0)
diff --git a/policy/modules/system/systemd.te b/policy/modules/system/systemd.te
index a1c00d62..495e9e08 100644
--- a/policy/modules/system/systemd.te
+++ b/policy/modules/system/systemd.te
@@ -168,6 +168,13 @@ files_runtime_file(systemd_nspawn_runtime_t)
type systemd_nspawn_tmp_t;
files_tmp_file(systemd_nspawn_tmp_t)
+type systemd_pstore_t;
+type systemd_pstore_exec_t;
+init_system_domain(systemd_pstore_t, systemd_pstore_exec_t)
+
+type systemd_pstore_var_lib_t;
+files_type(systemd_pstore_var_lib_t)
+
type systemd_resolved_t;
type systemd_resolved_exec_t;
init_system_domain(systemd_resolved_t, systemd_resolved_exec_t)
@@ -1168,6 +1175,9 @@ allow systemd_tmpfiles_t self:process { setfscreate
getcap };
allow systemd_tmpfiles_t systemd_coredump_var_lib_t:dir { manage_dir_perms
relabel_dir_perms };
allow systemd_tmpfiles_t systemd_coredump_var_lib_t:file manage_file_perms;
+allow systemd_tmpfiles_t systemd_pstore_var_lib_t:dir { manage_dir_perms
relabel_dir_perms };
+allow systemd_tmpfiles_t systemd_pstore_var_lib_t:file manage_file_perms;
+
allow systemd_tmpfiles_t systemd_sessions_runtime_t:file { manage_file_perms
relabel_file_perms };
manage_dirs_pattern(systemd_tmpfiles_t, systemd_journal_t, systemd_journal_t)
@@ -1187,6 +1197,10 @@ dev_manage_all_dev_nodes(systemd_tmpfiles_t)
dev_read_urand(systemd_tmpfiles_t)
dev_relabel_all_sysfs(systemd_tmpfiles_t)
dev_setattr_all_sysfs(systemd_tmpfiles_t)
+# Allow systemd-tmpfiles to enable pstore kernel parameters over sysfs
+# /sys/module/printk/parameters/always_kmsg_dump
+# /sys/module/kernel/parameters/crash_kexec_post_notifiers
+dev_write_sysfs(systemd_tmpfiles_t)
files_create_lock_dirs(systemd_tmpfiles_t)
files_manage_all_runtime_dirs(systemd_tmpfiles_t)
@@ -1411,3 +1425,26 @@
userdom_mounton_user_runtime_dirs(systemd_user_runtime_dir_t)
userdom_relabelto_user_runtime_dirs(systemd_user_runtime_dir_t)
dbus_system_bus_client(systemd_user_runtime_dir_t)
+
+#########################################
+#
+# systemd-pstore local policy
+#
+
+dontaudit systemd_pstore_t self:capability net_admin;
+
+manage_files_pattern(systemd_pstore_t, systemd_pstore_var_lib_t,
systemd_pstore_var_lib_t)
+
+files_read_etc_files(systemd_pstore_t)
+files_search_var_lib(systemd_pstore_t)
+
+fs_list_pstore_dirs(systemd_pstore_t)
+fs_read_pstore_files(systemd_pstore_t)
+fs_delete_pstore_files(systemd_pstore_t)
+
+init_search_run(systemd_pstore_t)
+init_list_var_lib_dirs(systemd_pstore_t)
+
+kernel_read_system_state(systemd_pstore_t)
+
+logging_send_syslog_msg(systemd_pstore_t)
