Add microdroid specific sepolicy
Microdroid will have a separate sepolicy, apart from the core policy.
This is the first step; For now it's a simple copy of system/sepolicy.
For the future work, it will be stripped.
Bug: 189165759
Test: boot microdroid and see selinux enforced
Change-Id: I2fee39f7231560b49c93bd5e8d0feeffada40938
diff --git a/microdroid/sepolicy/reqd_mask/access_vectors b/microdroid/sepolicy/reqd_mask/access_vectors
new file mode 100644
index 0000000..22f2ffa
--- /dev/null
+++ b/microdroid/sepolicy/reqd_mask/access_vectors
@@ -0,0 +1,777 @@
+#
+# Define common prefixes for access vectors
+#
+# common common_name { permission_name ... }
+
+
+#
+# Define a common prefix for file access vectors.
+#
+
+common file
+{
+ ioctl
+ read
+ write
+ create
+ getattr
+ setattr
+ lock
+ relabelfrom
+ relabelto
+ append
+ map
+ unlink
+ link
+ rename
+ execute
+ quotaon
+ mounton
+ audit_access
+ open
+ execmod
+ watch
+ watch_mount
+ watch_sb
+ watch_with_perm
+ watch_reads
+}
+
+
+#
+# Define a common prefix for socket access vectors.
+#
+
+common socket
+{
+# inherited from file
+ ioctl
+ read
+ write
+ create
+ getattr
+ setattr
+ lock
+ relabelfrom
+ relabelto
+ append
+ map
+# socket-specific
+ bind
+ connect
+ listen
+ accept
+ getopt
+ setopt
+ shutdown
+ recvfrom
+ sendto
+ name_bind
+}
+
+#
+# Define a common prefix for ipc access vectors.
+#
+
+common ipc
+{
+ create
+ destroy
+ getattr
+ setattr
+ read
+ write
+ associate
+ unix_read
+ unix_write
+}
+
+#
+# Define a common for capability access vectors.
+#
+common cap
+{
+ # The capabilities are defined in include/linux/capability.h
+ # Capabilities >= 32 are defined in the cap2 common.
+ # Care should be taken to ensure that these are consistent with
+ # those definitions. (Order matters)
+
+ chown
+ dac_override
+ dac_read_search
+ fowner
+ fsetid
+ kill
+ setgid
+ setuid
+ setpcap
+ linux_immutable
+ net_bind_service
+ net_broadcast
+ net_admin
+ net_raw
+ ipc_lock
+ ipc_owner
+ sys_module
+ sys_rawio
+ sys_chroot
+ sys_ptrace
+ sys_pacct
+ sys_admin
+ sys_boot
+ sys_nice
+ sys_resource
+ sys_time
+ sys_tty_config
+ mknod
+ lease
+ audit_write
+ audit_control
+ setfcap
+}
+
+common cap2
+{
+ mac_override # unused by SELinux
+ mac_admin
+ syslog
+ wake_alarm
+ block_suspend
+ audit_read
+ perfmon
+}
+
+#
+# Define the access vectors.
+#
+# class class_name [ inherits common_name ] { permission_name ... }
+
+
+#
+# Define the access vector interpretation for file-related objects.
+#
+
+class filesystem
+{
+ mount
+ remount
+ unmount
+ getattr
+ relabelfrom
+ relabelto
+ associate
+ quotamod
+ quotaget
+ watch
+}
+
+class dir
+inherits file
+{
+ add_name
+ remove_name
+ reparent
+ search
+ rmdir
+}
+
+class file
+inherits file
+{
+ execute_no_trans
+ entrypoint
+}
+
+class anon_inode
+inherits file
+
+class lnk_file
+inherits file
+
+class chr_file
+inherits file
+{
+ execute_no_trans
+ entrypoint
+}
+
+class blk_file
+inherits file
+
+class sock_file
+inherits file
+
+class fifo_file
+inherits file
+
+class fd
+{
+ use
+}
+
+
+#
+# Define the access vector interpretation for network-related objects.
+#
+
+class socket
+inherits socket
+
+class tcp_socket
+inherits socket
+{
+ node_bind
+ name_connect
+}
+
+class udp_socket
+inherits socket
+{
+ node_bind
+}
+
+class rawip_socket
+inherits socket
+{
+ node_bind
+}
+
+class node
+{
+ recvfrom
+ sendto
+}
+
+class netif
+{
+ ingress
+ egress
+}
+
+class netlink_socket
+inherits socket
+
+class packet_socket
+inherits socket
+
+class key_socket
+inherits socket
+
+class unix_stream_socket
+inherits socket
+{
+ connectto
+}
+
+class unix_dgram_socket
+inherits socket
+
+#
+# Define the access vector interpretation for process-related objects
+#
+
+class process
+{
+ fork
+ transition
+ sigchld # commonly granted from child to parent
+ sigkill # cannot be caught or ignored
+ sigstop # cannot be caught or ignored
+ signull # for kill(pid, 0)
+ signal # all other signals
+ ptrace
+ getsched
+ setsched
+ getsession
+ getpgid
+ setpgid
+ getcap
+ setcap
+ share
+ getattr
+ setexec
+ setfscreate
+ noatsecure
+ siginh
+ setrlimit
+ rlimitinh
+ dyntransition
+ setcurrent
+ execmem
+ execstack
+ execheap
+ setkeycreate
+ setsockcreate
+ getrlimit
+}
+
+class process2
+{
+ nnp_transition
+ nosuid_transition
+}
+
+#
+# Define the access vector interpretation for ipc-related objects
+#
+
+class ipc
+inherits ipc
+
+class sem
+inherits ipc
+
+class msgq
+inherits ipc
+{
+ enqueue
+}
+
+class msg
+{
+ send
+ receive
+}
+
+class shm
+inherits ipc
+{
+ lock
+}
+
+
+#
+# Define the access vector interpretation for the security server.
+#
+
+class security
+{
+ compute_av
+ compute_create
+ compute_member
+ check_context
+ load_policy
+ compute_relabel
+ compute_user
+ setenforce # was avc_toggle in system class
+ setbool
+ setsecparam
+ setcheckreqprot
+ read_policy
+ validate_trans
+}
+
+
+#
+# Define the access vector interpretation for system operations.
+#
+
+class system
+{
+ ipc_info
+ syslog_read
+ syslog_mod
+ syslog_console
+ module_request
+ module_load
+}
+
+#
+# Define the access vector interpretation for controlling capabilities
+#
+
+class capability
+inherits cap
+
+class capability2
+inherits cap2
+
+#
+# Extended Netlink classes
+#
+class netlink_route_socket
+inherits socket
+{
+ nlmsg_read
+ nlmsg_write
+ nlmsg_readpriv
+}
+
+class netlink_tcpdiag_socket
+inherits socket
+{
+ nlmsg_read
+ nlmsg_write
+}
+
+class netlink_nflog_socket
+inherits socket
+
+class netlink_xfrm_socket
+inherits socket
+{
+ nlmsg_read
+ nlmsg_write
+}
+
+class netlink_selinux_socket
+inherits socket
+
+class netlink_audit_socket
+inherits socket
+{
+ nlmsg_read
+ nlmsg_write
+ nlmsg_relay
+ nlmsg_readpriv
+ nlmsg_tty_audit
+}
+
+class netlink_dnrt_socket
+inherits socket
+
+# Define the access vector interpretation for controlling
+# access to IPSec network data by association
+#
+class association
+{
+ sendto
+ recvfrom
+ setcontext
+ polmatch
+}
+
+# Updated Netlink class for KOBJECT_UEVENT family.
+class netlink_kobject_uevent_socket
+inherits socket
+
+class appletalk_socket
+inherits socket
+
+class packet
+{
+ send
+ recv
+ relabelto
+ forward_in
+ forward_out
+}
+
+class key
+{
+ view
+ read
+ write
+ search
+ link
+ setattr
+ create
+}
+
+class dccp_socket
+inherits socket
+{
+ node_bind
+ name_connect
+}
+
+class memprotect
+{
+ mmap_zero
+}
+
+# network peer labels
+class peer
+{
+ recv
+}
+
+class kernel_service
+{
+ use_as_override
+ create_files_as
+}
+
+class tun_socket
+inherits socket
+{
+ attach_queue
+}
+
+class binder
+{
+ impersonate
+ call
+ set_context_mgr
+ transfer
+}
+
+class netlink_iscsi_socket
+inherits socket
+
+class netlink_fib_lookup_socket
+inherits socket
+
+class netlink_connector_socket
+inherits socket
+
+class netlink_netfilter_socket
+inherits socket
+
+class netlink_generic_socket
+inherits socket
+
+class netlink_scsitransport_socket
+inherits socket
+
+class netlink_rdma_socket
+inherits socket
+
+class netlink_crypto_socket
+inherits socket
+
+class infiniband_pkey
+{
+ access
+}
+
+class infiniband_endport
+{
+ manage_subnet
+}
+
+#
+# Define the access vector interpretation for controlling capabilities
+# in user namespaces
+#
+
+class cap_userns
+inherits cap
+
+class cap2_userns
+inherits cap2
+
+
+#
+# Define the access vector interpretation for the new socket classes
+# enabled by the extended_socket_class policy capability.
+#
+
+#
+# The next two classes were previously mapped to rawip_socket and therefore
+# have the same definition as rawip_socket (until further permissions
+# are defined).
+#
+class sctp_socket
+inherits socket
+{
+ node_bind
+ name_connect
+ association
+}
+
+class icmp_socket
+inherits socket
+{
+ node_bind
+}
+
+#
+# The remaining network socket classes were previously
+# mapped to the socket class and therefore have the
+# same definition as socket.
+#
+
+class ax25_socket
+inherits socket
+
+class ipx_socket
+inherits socket
+
+class netrom_socket
+inherits socket
+
+class atmpvc_socket
+inherits socket
+
+class x25_socket
+inherits socket
+
+class rose_socket
+inherits socket
+
+class decnet_socket
+inherits socket
+
+class atmsvc_socket
+inherits socket
+
+class rds_socket
+inherits socket
+
+class irda_socket
+inherits socket
+
+class pppox_socket
+inherits socket
+
+class llc_socket
+inherits socket
+
+class can_socket
+inherits socket
+
+class tipc_socket
+inherits socket
+
+class bluetooth_socket
+inherits socket
+
+class iucv_socket
+inherits socket
+
+class rxrpc_socket
+inherits socket
+
+class isdn_socket
+inherits socket
+
+class phonet_socket
+inherits socket
+
+class ieee802154_socket
+inherits socket
+
+class caif_socket
+inherits socket
+
+class alg_socket
+inherits socket
+
+class nfc_socket
+inherits socket
+
+class vsock_socket
+inherits socket
+
+class kcm_socket
+inherits socket
+
+class qipcrtr_socket
+inherits socket
+
+class smc_socket
+inherits socket
+
+class bpf
+{
+ map_create
+ map_read
+ map_write
+ prog_load
+ prog_run
+}
+
+class property_service
+{
+ set
+}
+
+class service_manager
+{
+ add
+ find
+ list
+}
+
+class hwservice_manager
+{
+ add
+ find
+ list
+}
+
+class keystore_key
+{
+ get_state
+ get
+ insert
+ delete
+ exist
+ list
+ reset
+ password
+ lock
+ unlock
+ is_empty
+ sign
+ verify
+ grant
+ duplicate
+ clear_uid
+ add_auth
+ user_changed
+ gen_unique_id
+}
+
+class keystore2
+{
+ add_auth
+ change_password
+ change_user
+ clear_ns
+ clear_uid
+ early_boot_ended
+ get_auth_token
+ get_state
+ list
+ lock
+ report_off_body
+ reset
+ unlock
+}
+
+class keystore2_key
+{
+ convert_storage_key_to_ephemeral
+ delete
+ gen_unique_id
+ get_info
+ grant
+ manage_blob
+ rebind
+ req_forced_op
+ update
+ use
+ use_dev_id
+}
+
+class drmservice {
+ consumeRights
+ setPlaybackStatus
+ openDecryptSession
+ closeDecryptSession
+ initializeDecryptUnit
+ decrypt
+ finalizeDecryptUnit
+ pread
+}
+
+class xdp_socket
+inherits socket
+
+class perf_event
+{
+ open
+ cpu
+ kernel
+ tracepoint
+ read
+ write
+}
+
+class lockdown
+{
+ integrity
+ confidentiality
+}
diff --git a/microdroid/sepolicy/reqd_mask/initial_sid_contexts b/microdroid/sepolicy/reqd_mask/initial_sid_contexts
new file mode 100644
index 0000000..aa465cd
--- /dev/null
+++ b/microdroid/sepolicy/reqd_mask/initial_sid_contexts
@@ -0,0 +1 @@
+sid reqd_mask u:r:reqd_mask_type:s0
diff --git a/microdroid/sepolicy/reqd_mask/initial_sids b/microdroid/sepolicy/reqd_mask/initial_sids
new file mode 100644
index 0000000..366cfb1
--- /dev/null
+++ b/microdroid/sepolicy/reqd_mask/initial_sids
@@ -0,0 +1,3 @@
+sid reqd_mask
+
+# FLASK
diff --git a/microdroid/sepolicy/reqd_mask/keys.conf b/microdroid/sepolicy/reqd_mask/keys.conf
new file mode 100644
index 0000000..ce7166b
--- /dev/null
+++ b/microdroid/sepolicy/reqd_mask/keys.conf
@@ -0,0 +1,2 @@
+# empty keys.conf file - used to generate an empty nonplat_mac_permissions.xml
+# on devices without any keys.conf or mac_permissions additions.
diff --git a/microdroid/sepolicy/reqd_mask/mac_permissions.xml b/microdroid/sepolicy/reqd_mask/mac_permissions.xml
new file mode 100644
index 0000000..ef9c6dd
--- /dev/null
+++ b/microdroid/sepolicy/reqd_mask/mac_permissions.xml
@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>
+<policy>
+</policy>
diff --git a/microdroid/sepolicy/reqd_mask/mls b/microdroid/sepolicy/reqd_mask/mls
new file mode 100644
index 0000000..d276924
--- /dev/null
+++ b/microdroid/sepolicy/reqd_mask/mls
@@ -0,0 +1 @@
+mlsconstrain binder { set_context_mgr } (l1 eq l2);
diff --git a/microdroid/sepolicy/reqd_mask/mls_decl b/microdroid/sepolicy/reqd_mask/mls_decl
new file mode 100644
index 0000000..dd53bea
--- /dev/null
+++ b/microdroid/sepolicy/reqd_mask/mls_decl
@@ -0,0 +1,10 @@
+#########################################
+# MLS declarations
+#
+
+# Generate the desired number of sensitivities and categories.
+gen_sens(mls_num_sens)
+gen_cats(mls_num_cats)
+
+# Generate level definitions for each sensitivity and category.
+gen_levels(mls_num_sens,mls_num_cats)
diff --git a/microdroid/sepolicy/reqd_mask/mls_macros b/microdroid/sepolicy/reqd_mask/mls_macros
new file mode 100644
index 0000000..83e0542
--- /dev/null
+++ b/microdroid/sepolicy/reqd_mask/mls_macros
@@ -0,0 +1,54 @@
+########################################
+#
+# gen_cats(N)
+#
+# declares categores c0 to c(N-1)
+#
+define(`decl_cats',`dnl
+category c$1;
+ifelse(`$1',`$2',,`decl_cats(incr($1),$2)')dnl
+')
+
+define(`gen_cats',`decl_cats(0,decr($1))')
+
+########################################
+#
+# gen_sens(N)
+#
+# declares sensitivites s0 to s(N-1) with dominance
+# in increasing numeric order with s0 lowest, s(N-1) highest
+#
+define(`decl_sens',`dnl
+sensitivity s$1;
+ifelse(`$1',`$2',,`decl_sens(incr($1),$2)')dnl
+')
+
+define(`gen_dominance',`s$1 ifelse(`$1',`$2',,`gen_dominance(incr($1),$2)')')
+
+define(`gen_sens',`
+# Each sensitivity has a name and zero or more aliases.
+decl_sens(0,decr($1))
+
+# Define the ordering of the sensitivity levels (least to greatest)
+dominance { gen_dominance(0,decr($1)) }
+')
+
+########################################
+#
+# gen_levels(N,M)
+#
+# levels from s0 to (N-1) with categories c0 to (M-1)
+#
+define(`decl_levels',`dnl
+level s$1:c0.c$3;
+ifelse(`$1',`$2',,`decl_levels(incr($1),$2,$3)')dnl
+')
+
+define(`gen_levels',`decl_levels(0,decr($1),decr($2))')
+
+########################################
+#
+# Basic level names for system low and high
+#
+define(`mls_systemlow',`s0')
+define(`mls_systemhigh',`s`'decr(mls_num_sens):c0.c`'decr(mls_num_cats)')
diff --git a/microdroid/sepolicy/reqd_mask/property_contexts b/microdroid/sepolicy/reqd_mask/property_contexts
new file mode 100644
index 0000000..8e0bdbb
--- /dev/null
+++ b/microdroid/sepolicy/reqd_mask/property_contexts
@@ -0,0 +1,3 @@
+# empty property_contexts file - this file is used to generate an empty
+# non-platform property context for devices without any property_contexts
+# customizations.
diff --git a/microdroid/sepolicy/reqd_mask/reqd_mask.te b/microdroid/sepolicy/reqd_mask/reqd_mask.te
new file mode 100644
index 0000000..f77eef4
--- /dev/null
+++ b/microdroid/sepolicy/reqd_mask/reqd_mask.te
@@ -0,0 +1 @@
+type reqd_mask_type;
diff --git a/microdroid/sepolicy/reqd_mask/roles b/microdroid/sepolicy/reqd_mask/roles
new file mode 100644
index 0000000..926cb7a
--- /dev/null
+++ b/microdroid/sepolicy/reqd_mask/roles
@@ -0,0 +1 @@
+role r types reqd_mask_type;
diff --git a/microdroid/sepolicy/reqd_mask/roles_decl b/microdroid/sepolicy/reqd_mask/roles_decl
new file mode 100644
index 0000000..c84fcba
--- /dev/null
+++ b/microdroid/sepolicy/reqd_mask/roles_decl
@@ -0,0 +1 @@
+role r;
diff --git a/microdroid/sepolicy/reqd_mask/seapp_contexts b/microdroid/sepolicy/reqd_mask/seapp_contexts
new file mode 100644
index 0000000..0f4e0ad
--- /dev/null
+++ b/microdroid/sepolicy/reqd_mask/seapp_contexts
@@ -0,0 +1,2 @@
+# empty seapp_contexts file - used to generate an empty seapp_contexts for
+# devices without any non-platform seapp_contexts customizations.
diff --git a/microdroid/sepolicy/reqd_mask/security_classes b/microdroid/sepolicy/reqd_mask/security_classes
new file mode 100644
index 0000000..200b030
--- /dev/null
+++ b/microdroid/sepolicy/reqd_mask/security_classes
@@ -0,0 +1,167 @@
+# FLASK
+
+#
+# Define the security object classes
+#
+
+# Classes marked as userspace are classes
+# for userspace object managers
+
+class security
+class process
+class system
+class capability
+
+# file-related classes
+class filesystem
+class file
+class anon_inode
+class dir
+class fd
+class lnk_file
+class chr_file
+class blk_file
+class sock_file
+class fifo_file
+
+# network-related classes
+class socket
+class tcp_socket
+class udp_socket
+class rawip_socket
+class node
+class netif
+class netlink_socket
+class packet_socket
+class key_socket
+class unix_stream_socket
+class unix_dgram_socket
+
+# sysv-ipc-related classes
+class sem
+class msg
+class msgq
+class shm
+class ipc
+
+# extended netlink sockets
+class netlink_route_socket
+class netlink_tcpdiag_socket
+class netlink_nflog_socket
+class netlink_xfrm_socket
+class netlink_selinux_socket
+class netlink_audit_socket
+class netlink_dnrt_socket
+
+# IPSec association
+class association
+
+# Updated Netlink class for KOBJECT_UEVENT family.
+class netlink_kobject_uevent_socket
+
+class appletalk_socket
+
+class packet
+
+# Kernel access key retention
+class key
+
+class dccp_socket
+
+class memprotect
+
+# network peer labels
+class peer
+
+# Capabilities >= 32
+class capability2
+
+# kernel services that need to override task security, e.g. cachefiles
+class kernel_service
+
+class tun_socket
+
+class binder
+
+# Updated netlink classes for more recent netlink protocols.
+class netlink_iscsi_socket
+class netlink_fib_lookup_socket
+class netlink_connector_socket
+class netlink_netfilter_socket
+class netlink_generic_socket
+class netlink_scsitransport_socket
+class netlink_rdma_socket
+class netlink_crypto_socket
+
+# Infiniband
+class infiniband_pkey
+class infiniband_endport
+
+# Capability checks when on a non-init user namespace
+class cap_userns
+class cap2_userns
+
+# New socket classes introduced by extended_socket_class policy capability.
+# These two were previously mapped to rawip_socket.
+class sctp_socket
+class icmp_socket
+# These were previously mapped to socket.
+class ax25_socket
+class ipx_socket
+class netrom_socket
+class atmpvc_socket
+class x25_socket
+class rose_socket
+class decnet_socket
+class atmsvc_socket
+class rds_socket
+class irda_socket
+class pppox_socket
+class llc_socket
+class can_socket
+class tipc_socket
+class bluetooth_socket
+class iucv_socket
+class rxrpc_socket
+class isdn_socket
+class phonet_socket
+class ieee802154_socket
+class caif_socket
+class alg_socket
+class nfc_socket
+class vsock_socket
+class kcm_socket
+class qipcrtr_socket
+class smc_socket
+
+class process2
+
+class bpf
+
+class xdp_socket
+
+class perf_event
+
+# Introduced in https://github.com/torvalds/linux/commit/59438b46471ae6cdfb761afc8c9beaf1e428a331
+class lockdown
+
+# Property service
+class property_service # userspace
+
+# Service manager
+class service_manager # userspace
+
+# hardware service manager # userspace
+class hwservice_manager
+
+# Legacy Keystore key permissions
+class keystore_key # userspace
+
+# Keystore 2.0 permissions
+class keystore2 # userspace
+
+# Keystore 2.0 key permissions
+class keystore2_key # userspace
+
+class drmservice # userspace
+# FLASK
diff --git a/microdroid/sepolicy/reqd_mask/service_contexts b/microdroid/sepolicy/reqd_mask/service_contexts
new file mode 100644
index 0000000..481967b
--- /dev/null
+++ b/microdroid/sepolicy/reqd_mask/service_contexts
@@ -0,0 +1,3 @@
+# empty service_contexts file - this file is used to generate an empty
+# non-platform service_context for devices without any service_contexts
+# customizations.
diff --git a/microdroid/sepolicy/reqd_mask/users b/microdroid/sepolicy/reqd_mask/users
new file mode 100644
index 0000000..51b7b57
--- /dev/null
+++ b/microdroid/sepolicy/reqd_mask/users
@@ -0,0 +1 @@
+user u roles { r } level s0 range s0 - mls_systemhigh;