cc39f63773
Divide policy into public and private components. This is the first step in splitting the policy creation for platform and non-platform policies. The policy in the public directory will be exported for use in non-platform policy creation. Backwards compatibility with it will be achieved by converting the exported policy into attribute-based policy when included as part of the non-platform policy and a mapping file will be maintained to be included with the platform policy that maps exported attributes of previous versions to the current platform version. Eventually we would like to create a clear interface between the platform and non-platform device components so that the exported policy, and the need for attributes is minimal. For now, almost all types and avrules are left in public. Test: Tested by building policy and running on device. Change-Id: Idef796c9ec169259787c3f9d8f423edf4ce27f8c
184 lines
5.7 KiB
Text
184 lines
5.7 KiB
Text
# 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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# Run app_process.
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# XXX Transition into its own domain?
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app_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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# logpersistd (nee logcatd) files
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userdebug_or_eng(`
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allow shell misc_logd_file:dir r_dir_perms;
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allow shell misc_logd_file:file r_file_perms;
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')
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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 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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userdebug_or_eng(`set_prop(shell, log_prop)')
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userdebug_or_eng(`set_prop(shell, logpersistd_logging_prop)')
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# systrace support - allow atrace to run
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allow shell debugfs_tracing:dir r_dir_perms;
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allow shell debugfs_tracing:file rw_file_perms;
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allow shell debugfs_trace_marker:file getattr;
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allow shell atrace_exec:file rx_file_perms;
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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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# allow shell to run dmesg
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allow shell kernel:system syslog_read;
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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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allow shell { service_manager_type -gatekeeper_service -netd_service }:service_manager find;
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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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# Access to /data/media.
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# This should be removed if sdcardfs is modified to alter the secontext for its
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# accesses to the underlying FS.
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allow shell media_rw_data_file:dir create_dir_perms;
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allow shell media_rw_data_file:file create_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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###
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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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}: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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