9b2e0cbeea
In kernel 4.7, the capability and capability2 classes were split apart
from cap_userns and cap2_userns (see kernel commit
8e4ff6f228e4722cac74db716e308d1da33d744f). Since then, Android cannot be
run in a container with SELinux in enforcing mode.
This change applies the existing capability rules to user namespaces as
well as the root namespace so that Android running in a container
behaves the same on pre- and post-4.7 kernels.
This is essentially:
1. New global_capability_class_set and global_capability2_class_set
that match capability+cap_userns and capability2+cap2_userns,
respectively.
2. s/self:capability/self:global_capability_class_set/g
3. s/self:capability2/self:global_capability2_class_set/g
4. Add cap_userns and cap2_userns to the existing capability_class_set
so that it covers all capabilities. This set was used by several
neverallow and dontaudit rules, and I confirmed that the new
classes are still appropriate.
Test: diff new policy against old and confirm that all new rules add
only cap_userns or cap2_userns;
Boot ARC++ on a device with the 4.12 kernel.
Bug: crbug.com/754831
Change-Id: I4007eb3a2ecd01b062c4c78d9afee71c530df95f
50 lines
3.4 KiB
Text
50 lines
3.4 KiB
Text
#####################################
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# Common groupings of object classes.
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#
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define(`capability_class_set', `{ capability capability2 cap_userns cap2_userns }')
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define(`global_capability_class_set', `{ capability cap_userns }')
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define(`global_capability2_class_set', `{ capability2 cap2_userns }')
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define(`devfile_class_set', `{ chr_file blk_file }')
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define(`notdevfile_class_set', `{ file lnk_file sock_file fifo_file }')
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define(`file_class_set', `{ devfile_class_set notdevfile_class_set }')
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define(`dir_file_class_set', `{ dir file_class_set }')
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define(`socket_class_set', `{ socket tcp_socket udp_socket rawip_socket netlink_socket packet_socket key_socket unix_stream_socket unix_dgram_socket appletalk_socket netlink_route_socket netlink_tcpdiag_socket netlink_nflog_socket netlink_xfrm_socket netlink_selinux_socket netlink_audit_socket netlink_dnrt_socket netlink_kobject_uevent_socket tun_socket netlink_iscsi_socket netlink_fib_lookup_socket netlink_connector_socket netlink_netfilter_socket netlink_generic_socket netlink_scsitransport_socket netlink_rdma_socket netlink_crypto_socket sctp_socket icmp_socket ax25_socket ipx_socket netrom_socket atmpvc_socket x25_socket rose_socket decnet_socket atmsvc_socket rds_socket irda_socket pppox_socket llc_socket can_socket tipc_socket bluetooth_socket iucv_socket rxrpc_socket isdn_socket phonet_socket ieee802154_socket caif_socket alg_socket nfc_socket vsock_socket kcm_socket qipcrtr_socket smc_socket }')
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define(`dgram_socket_class_set', `{ udp_socket unix_dgram_socket }')
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define(`stream_socket_class_set', `{ tcp_socket unix_stream_socket }')
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define(`unpriv_socket_class_set', `{ tcp_socket udp_socket unix_stream_socket unix_dgram_socket }')
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define(`ipc_class_set', `{ sem msgq shm ipc }')
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#####################################
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# Common groupings of permissions.
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#
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define(`x_file_perms', `{ getattr execute execute_no_trans map }')
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define(`r_file_perms', `{ getattr open read ioctl lock map }')
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define(`w_file_perms', `{ open append write lock map }')
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define(`rx_file_perms', `{ r_file_perms x_file_perms }')
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define(`ra_file_perms', `{ r_file_perms append }')
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define(`rw_file_perms', `{ r_file_perms w_file_perms }')
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define(`rwx_file_perms', `{ rw_file_perms x_file_perms }')
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define(`create_file_perms', `{ create rename setattr unlink rw_file_perms }')
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define(`r_dir_perms', `{ open getattr read search ioctl lock }')
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define(`w_dir_perms', `{ open search write add_name remove_name lock }')
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define(`ra_dir_perms', `{ r_dir_perms add_name write }')
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define(`rw_dir_perms', `{ r_dir_perms w_dir_perms }')
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define(`create_dir_perms', `{ create reparent rename rmdir setattr rw_dir_perms }')
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define(`r_ipc_perms', `{ getattr read associate unix_read }')
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define(`w_ipc_perms', `{ write unix_write }')
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define(`rw_ipc_perms', `{ r_ipc_perms w_ipc_perms }')
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define(`create_ipc_perms', `{ create setattr destroy rw_ipc_perms }')
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#####################################
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# Common socket permission sets.
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define(`rw_socket_perms', `{ ioctl read getattr write setattr lock append bind connect getopt setopt shutdown }')
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define(`rw_socket_perms_no_ioctl', `{ read getattr write setattr lock append bind connect getopt setopt shutdown }')
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define(`create_socket_perms', `{ create rw_socket_perms }')
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define(`create_socket_perms_no_ioctl', `{ create rw_socket_perms_no_ioctl }')
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define(`rw_stream_socket_perms', `{ rw_socket_perms listen accept }')
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define(`create_stream_socket_perms', `{ create rw_stream_socket_perms }')
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