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185 lines
6.0 KiB
185 lines
6.0 KiB
# Domain for shell processes spawned by ADB or console service. |
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type shell, domain, mlstrustedsubject; |
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type shell_exec, exec_type, file_type; |
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# Create and use network sockets. |
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net_domain(shell) |
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# logcat |
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read_logd(shell) |
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control_logd(shell) |
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# logcat -L (directly, or via dumpstate) |
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allow shell pstorefs:dir search; |
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allow shell pstorefs:file r_file_perms; |
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# Root fs. |
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allow shell rootfs:dir r_dir_perms; |
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# read files in /data/anr |
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allow shell anr_data_file:dir r_dir_perms; |
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allow shell anr_data_file:file r_file_perms; |
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# Access /data/local/tmp. |
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allow shell shell_data_file:dir create_dir_perms; |
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allow shell shell_data_file:file create_file_perms; |
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allow shell shell_data_file:file rx_file_perms; |
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allow shell shell_data_file:lnk_file create_file_perms; |
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# Access /data/misc/profman. |
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allow shell profman_dump_data_file:dir { search getattr write remove_name }; |
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allow shell profman_dump_data_file:file { getattr unlink }; |
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# Read/execute files in /data/nativetest |
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userdebug_or_eng(` |
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allow shell nativetest_data_file:dir r_dir_perms; |
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allow shell nativetest_data_file:file rx_file_perms; |
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') |
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# adb bugreport |
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unix_socket_connect(shell, dumpstate, dumpstate) |
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allow shell devpts:chr_file rw_file_perms; |
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allow shell tty_device:chr_file rw_file_perms; |
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allow shell console_device:chr_file rw_file_perms; |
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allow shell input_device:dir r_dir_perms; |
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allow shell input_device:chr_file rw_file_perms; |
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r_dir_file(shell, system_file) |
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allow shell system_file:file x_file_perms; |
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allow shell toolbox_exec:file rx_file_perms; |
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allow shell tzdatacheck_exec:file rx_file_perms; |
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allow shell shell_exec:file rx_file_perms; |
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allow shell zygote_exec:file rx_file_perms; |
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r_dir_file(shell, apk_data_file) |
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# Set properties. |
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set_prop(shell, shell_prop) |
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set_prop(shell, ctl_bugreport_prop) |
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set_prop(shell, ctl_dumpstate_prop) |
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set_prop(shell, dumpstate_prop) |
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set_prop(shell, debug_prop) |
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set_prop(shell, powerctl_prop) |
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set_prop(shell, log_tag_prop) |
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set_prop(shell, wifi_log_prop) |
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# adjust is_loggable properties |
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userdebug_or_eng(`set_prop(shell, log_prop)') |
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# logpersist script |
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userdebug_or_eng(`set_prop(shell, logpersistd_logging_prop)') |
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userdebug_or_eng(` |
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# "systrace --boot" support - allow boottrace service to run |
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allow shell boottrace_data_file:dir rw_dir_perms; |
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allow shell boottrace_data_file:file create_file_perms; |
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set_prop(shell, persist_debug_prop) |
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') |
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# Read device's serial number from system properties |
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get_prop(shell, serialno_prop) |
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# Read state of logging-related properties |
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get_prop(shell, device_logging_prop) |
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# allow shell access to services |
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allow shell servicemanager:service_manager list; |
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# don't allow shell to access GateKeeper service |
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# TODO: why is this so broad? Tightening candidate? It needs at list: |
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# - dumpstate_service (so it can receive dumpstate progress updates) |
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allow shell { service_manager_type -gatekeeper_service -incident_service -installd_service -netd_service -virtual_touchpad_service -vr_hwc_service }:service_manager find; |
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allow shell dumpstate:binder call; |
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# allow shell to get information from hwservicemanager |
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# for instance, listing hardware services with lshal |
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hwbinder_use(shell) |
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allow shell hwservicemanager:hwservice_manager list; |
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# allow shell to look through /proc/ for ps, top, netstat |
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r_dir_file(shell, proc) |
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r_dir_file(shell, proc_net) |
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allow shell proc_interrupts:file r_file_perms; |
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allow shell proc_meminfo:file r_file_perms; |
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allow shell proc_stat:file r_file_perms; |
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allow shell proc_timer:file r_file_perms; |
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allow shell proc_zoneinfo:file r_file_perms; |
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r_dir_file(shell, cgroup) |
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allow shell domain:dir { search open read getattr }; |
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allow shell domain:{ file lnk_file } { open read getattr }; |
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# statvfs() of /proc and other labeled filesystems |
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# (yaffs2, jffs2, ext2, ext3, ext4, xfs, btrfs, f2fs, squashfs) |
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allow shell { proc labeledfs }:filesystem getattr; |
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# stat() of /dev |
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allow shell device:dir getattr; |
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# allow shell to read /proc/pid/attr/current for ps -Z |
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allow shell domain:process getattr; |
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# Allow pulling the SELinux policy for CTS purposes |
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allow shell selinuxfs:dir r_dir_perms; |
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allow shell selinuxfs:file r_file_perms; |
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# enable shell domain to read/write files/dirs for bootchart data |
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# User will creates the start and stop file via adb shell |
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# and read other files created by init process under /data/bootchart |
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allow shell bootchart_data_file:dir rw_dir_perms; |
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allow shell bootchart_data_file:file create_file_perms; |
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# Make sure strace works for the non-privileged shell user |
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allow shell self:process ptrace; |
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# allow shell to get battery info |
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allow shell sysfs_batteryinfo:file r_file_perms; |
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allow shell sysfs:dir r_dir_perms; |
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# Allow access to ion memory allocation device. |
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allow shell ion_device:chr_file rw_file_perms; |
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# |
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# filesystem test for insecure chr_file's is done |
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# via a host side test |
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# |
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allow shell dev_type:dir r_dir_perms; |
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allow shell dev_type:chr_file getattr; |
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# /dev/fd is a symlink |
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allow shell proc:lnk_file getattr; |
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# |
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# filesystem test for insucre blk_file's is done |
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# via hostside test |
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# |
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allow shell dev_type:blk_file getattr; |
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# read selinux policy files |
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allow shell file_contexts_file:file r_file_perms; |
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allow shell property_contexts_file:file r_file_perms; |
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allow shell seapp_contexts_file:file r_file_perms; |
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allow shell service_contexts_file:file r_file_perms; |
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allow shell sepolicy_file:file r_file_perms; |
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### |
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### Neverallow rules |
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### |
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# Do not allow shell to hard link to any files. |
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# In particular, if shell hard links to app data |
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# files, installd will not be able to guarantee the deletion |
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# of the linked to file. Hard links also contribute to security |
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# bugs, so we want to ensure the shell user never has this |
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# capability. |
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neverallow shell file_type:file link; |
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# Do not allow privileged socket ioctl commands |
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neverallowxperm shell domain:{ rawip_socket tcp_socket udp_socket } ioctl priv_sock_ioctls; |
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# limit shell access to sensitive char drivers to |
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# only getattr required for host side test. |
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neverallow shell { |
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fuse_device |
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hw_random_device |
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kmem_device |
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port_device |
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}:chr_file ~getattr; |
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# Limit shell to only getattr on blk devices for host side tests. |
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neverallow shell dev_type:blk_file ~getattr;
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