[PATCH v2 5/7] selinux: Add rules for sysctl and /proc/net accesses

[Stefano Brivio <sbrivio@redhat.com>]

That's what we actually need to check networking-related sysctls,
to scan for bound ports, and to manipulate bits of network
configuration inside pasta's target namespaces.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Acked-by: Richard W.M. Jones <rjones@redhat.com>
---
 contrib/selinux/passt.te | 1 +
 contrib/selinux/pasta.te | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/contrib/selinux/passt.te b/contrib/selinux/passt.te
index a0c0526..948d1b1 100644
--- a/contrib/selinux/passt.te
+++ b/contrib/selinux/passt.te
@@ -101,6 +101,7 @@ allow passt_t net_conf_t:file { open read };
 allow passt_t net_conf_t:lnk_file read;
 allow passt_t tmp_t:sock_file { create unlink write };
 allow passt_t self:netlink_route_socket { bind create nlmsg_read read write setopt };
+kernel_search_network_sysctl(passt_t)
 
 corenet_tcp_bind_all_nodes(passt_t)
 corenet_udp_bind_all_nodes(passt_t)
diff --git a/contrib/selinux/pasta.te b/contrib/selinux/pasta.te
index 28265dc..b3ddc6a 100644
--- a/contrib/selinux/pasta.te
+++ b/contrib/selinux/pasta.te
@@ -133,6 +133,7 @@ allow syslogd_t self:cap_userns sys_ptrace;
 allow pasta_t proc_net_t:file { open read };
 allow pasta_t net_conf_t:file { open read };
 allow pasta_t self:netlink_route_socket { bind create nlmsg_read nlmsg_write setopt read write };
+kernel_search_network_sysctl(pasta_t)
 
 allow pasta_t tmp_t:sock_file { create unlink write };
 
@@ -186,4 +187,6 @@ allow pasta_t sysctl_net_t:dir search;
 allow pasta_t sysctl_net_t:file { open write };
 allow pasta_t kernel_t:system module_request;
 
+allow pasta_t net_conf_t:lnk_file read;
+allow pasta_t proc_net_t:lnk_file read;
 
-- 
@@ -133,6 +133,7 @@ allow syslogd_t self:cap_userns sys_ptrace;
 allow pasta_t proc_net_t:file { open read };
 allow pasta_t net_conf_t:file { open read };
 allow pasta_t self:netlink_route_socket { bind create nlmsg_read nlmsg_write setopt read write };
+kernel_search_network_sysctl(pasta_t)
 
 allow pasta_t tmp_t:sock_file { create unlink write };
 
@@ -186,4 +187,6 @@ allow pasta_t sysctl_net_t:dir search;
 allow pasta_t sysctl_net_t:file { open write };
 allow pasta_t kernel_t:system module_request;
 
+allow pasta_t net_conf_t:lnk_file read;
+allow pasta_t proc_net_t:lnk_file read;
 
-- 
2.39.2