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From ec96260a28f9aae44afc8eec0e089bf95a36b557 Mon Sep 17 00:00:00 2001
From: Shrikant Bobade <shrikant_bobade@mentor.com>
Date: Fri, 26 Aug 2016 17:54:17 +0530
Subject: [PATCH 8/9] refpolicy-minimum: systemd: fix for systemd tmp-files
services
fix for systemd tmp files setup service while using refpolicy-minimum and
systemd as init manager.
these allow rules require kernel domain & files access, so added interfaces
at systemd.te to merge these allow rules.
without these changes we are getting avc denails like these and below
systemd services failure:
audit[]: AVC avc: denied { getattr } for pid=232 comm="systemd-tmpfile"
path="/var/tmp" dev="mmcblk2p2" ino=4993 scontext=system_u:system_r:systemd
_tmpfiles_t:s0 tcontext=system_u:object_r:tmp_t:s0 tclass=lnk_file
audit[]: AVC avc: denied { search } for pid=232 comm="systemd-tmpfile"
name="kernel" dev="proc" ino=9341 scontext=system_u:system_r:
systemd_tmpfiles_t:s0 tcontext=system_u:object_r:sysctl_kernel_t:s0
tclass=dir permissive=0
[FAILED] Failed to start Create Static Device Nodes in /dev.
See 'systemctl status systemd-tmpfiles-setup-dev.service' for details.
[FAILED] Failed to start Create Volatile Files and Directories.
See 'systemctl status systemd-tmpfiles-setup.service' for details.
Upstream-Status: Pending
Signed-off-by: Shrikant Bobade <shrikant_bobade@mentor.com>
---
policy/modules/kernel/files.if | 19 +++++++++++++++++++
policy/modules/kernel/kernel.if | 23 +++++++++++++++++++++++
policy/modules/system/systemd.te | 3 +++
3 files changed, 45 insertions(+)
--- a/policy/modules/kernel/files.if
+++ b/policy/modules/kernel/files.if
@@ -6906,3 +6906,22 @@ interface(`files_unconfined',`
typeattribute $1 files_unconfined_type;
')
+
+########################################
+## <summary>
+## systemd tmp files access to kernel tmp files domain
+## </summary>
+## <param name="domain">
+## <summary>
+## Domain allowed access.
+## </summary>
+## </param>
+#
+interface(`systemd_service_allow_kernel_files_domain_to_tmp_t',`
+ gen_require(`
+ type tmp_t;
+ class lnk_file getattr;
+ ')
+
+ allow $1 tmp_t:lnk_file getattr;
+')
--- a/policy/modules/kernel/kernel.if
+++ b/policy/modules/kernel/kernel.if
@@ -3418,3 +3418,26 @@ interface(`kernel_rw_vm_overcommit_sysct
kernel_search_vm_sysctl($1)
allow $1 sysctl_vm_overcommit_t:file rw_file_perms;
')
+
+########################################
+## <summary>
+## systemd tmp files access to kernel sysctl domain
+## </summary>
+## <param name="domain">
+## <summary>
+## Domain allowed access.
+## </summary>
+## </param>
+#
+interface(`systemd_service_allow_kernel_domain_access_to_sysctl_kernel_t',`
+ gen_require(`
+ type sysctl_kernel_t;
+ class dir search;
+ class file { open read };
+ ')
+
+ allow $1 sysctl_kernel_t:dir search;
+ allow $1 sysctl_kernel_t:file { open read };
+
+')
+
--- a/policy/modules/system/systemd.te
+++ b/policy/modules/system/systemd.te
@@ -374,3 +374,6 @@ allow systemd_tmpfiles_t initrc_t:unix_d
allow systemd_tmpfiles_t self:capability net_admin;
allow systemd_tmpfiles_t init_t:file { open getattr read };
+
+systemd_service_allow_kernel_domain_access_to_sysctl_kernel_t(systemd_tmpfiles_t)
+systemd_service_allow_kernel_files_domain_to_tmp_t(systemd_tmpfiles_t)
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