206 lines
8.5 KiB
Text
206 lines
8.5 KiB
Text
typeattribute apexd coredomain;
|
|
|
|
init_daemon_domain(apexd)
|
|
|
|
# Allow creating, reading and writing of APEX files/dirs in the APEX data dir
|
|
allow apexd apex_data_file:dir create_dir_perms;
|
|
allow apexd apex_data_file:file create_file_perms;
|
|
# Allow relabeling file created in /data/apex/decompressed
|
|
allow apexd apex_data_file:file relabelfrom;
|
|
|
|
# Allow creating, reading and writing of APEX files/dirs in the APEX metadata dir
|
|
allow apexd metadata_file:dir search;
|
|
allow apexd apex_metadata_file:dir create_dir_perms;
|
|
allow apexd apex_metadata_file:file create_file_perms;
|
|
|
|
# Allow creating and writing APEX files/dirs in the SEPolicy metadata dir
|
|
allow apexd sepolicy_metadata_file:dir create_dir_perms;
|
|
allow apexd sepolicy_metadata_file:file create_file_perms;
|
|
# Allow apexd to setup fs-verity for SEPolicy files in metadata
|
|
allowxperm apexd sepolicy_metadata_file:file ioctl {
|
|
FS_IOC_ENABLE_VERITY FS_IOC_MEASURE_VERITY
|
|
};
|
|
|
|
# Allow reserving space on /data/apex/ota_reserved for apex decompression
|
|
allow apexd apex_ota_reserved_file:dir create_dir_perms;
|
|
allow apexd apex_ota_reserved_file:file create_file_perms;
|
|
|
|
# Allow apexd to create files and directories for snapshots of apex data
|
|
allow apexd apex_data_file_type:dir { create_dir_perms relabelto };
|
|
allow apexd apex_data_file_type:file { create_file_perms relabelto };
|
|
allow apexd apex_module_data_file:dir { create_dir_perms relabelfrom };
|
|
allow apexd apex_module_data_file:file { create_file_perms relabelfrom };
|
|
allow apexd apex_rollback_data_file:dir create_dir_perms;
|
|
allow apexd apex_rollback_data_file:file create_file_perms;
|
|
|
|
# Allow apexd to read directories under /data/misc_de in order to snapshot and
|
|
# restore apex data for all users.
|
|
allow apexd system_data_file:dir r_dir_perms;
|
|
|
|
# allow apexd to create loop devices with /dev/loop-control
|
|
allow apexd loop_control_device:chr_file rw_file_perms;
|
|
# allow apexd to access loop devices
|
|
allow apexd loop_device:blk_file rw_file_perms;
|
|
allowxperm apexd loop_device:blk_file ioctl {
|
|
LOOP_GET_STATUS64
|
|
LOOP_SET_STATUS64
|
|
LOOP_SET_FD
|
|
LOOP_SET_BLOCK_SIZE
|
|
LOOP_SET_DIRECT_IO
|
|
LOOP_CLR_FD
|
|
BLKFLSBUF
|
|
LOOP_CONFIGURE
|
|
};
|
|
# Allow apexd to access /dev/block
|
|
allow apexd dev_type:dir r_dir_perms;
|
|
allow apexd dev_type:blk_file getattr;
|
|
|
|
#allow apexd to access virtual disks
|
|
allow apexd vd_device:blk_file r_file_perms;
|
|
|
|
# allow apexd to access /dev/block/dm-* (device-mapper entries)
|
|
allow apexd dm_device:chr_file rw_file_perms;
|
|
allow apexd dm_device:blk_file rw_file_perms;
|
|
|
|
# sys_admin is required to access the device-mapper and mount
|
|
# dac_override, chown, and fowner are needed for snapshot and restore
|
|
allow apexd self:global_capability_class_set { sys_admin chown dac_override dac_read_search fowner };
|
|
|
|
# Note: fsetid is deliberately not included above. fsetid checks are
|
|
# triggered by chmod on a directory or file owned by a group other
|
|
# than one of the groups assigned to the current process to see if
|
|
# the setgid bit should be cleared, regardless of whether the setgid
|
|
# bit was even set. We do not appear to truly need this capability
|
|
# for apexd to operate.
|
|
dontaudit apexd self:global_capability_class_set fsetid;
|
|
|
|
# allow apexd to create a mount point in /apex
|
|
allow apexd apex_mnt_dir:dir create_dir_perms;
|
|
# allow apexd to mount in /apex
|
|
allow apexd apex_mnt_dir:filesystem { mount unmount };
|
|
allow apexd apex_mnt_dir:dir mounton;
|
|
# allow apexd to create symlinks in /apex
|
|
allow apexd apex_mnt_dir:lnk_file create_file_perms;
|
|
# allow apexd to create /apex/apex-info-list.xml and relabel to apex_info_file
|
|
allow apexd apex_mnt_dir:file { create_file_perms relabelfrom mounton };
|
|
allow apexd apex_info_file:file relabelto;
|
|
# apexd needs to update /apex/apex-info-list.xml after non-staged APEX update.
|
|
allow apexd apex_info_file:file rw_file_perms;
|
|
allow apexd apex_info_file:file mounton;
|
|
|
|
# allow apexd to unlink apex files in /data/apex/active
|
|
# note that apexd won't be able to unlink files in /data/app-staging/session_XXXX,
|
|
# because it doesn't have write permission for staging_data_file object.
|
|
allow apexd staging_data_file:file unlink;
|
|
|
|
# allow apexd to read files from /data/app-staging and hardlink them to /data/apex.
|
|
allow apexd staging_data_file:dir r_dir_perms;
|
|
allow apexd staging_data_file:file { r_file_perms link };
|
|
# # Allow relabeling file created in /data/apex/decompressed
|
|
allow apexd staging_data_file:file relabelto;
|
|
|
|
# allow apexd to read files from /vendor/apex
|
|
allow apexd vendor_apex_file:dir r_dir_perms;
|
|
allow apexd vendor_apex_file:file r_file_perms;
|
|
|
|
# Unmount and mount filesystems
|
|
allow apexd labeledfs:filesystem { mount unmount };
|
|
|
|
# /sys directory tree traversal
|
|
allow apexd sysfs_type:dir search;
|
|
# Access to /sys/class/block
|
|
allow apexd sysfs_type:dir r_dir_perms;
|
|
allow apexd sysfs_type:file r_file_perms;
|
|
# Configure read-ahead of dm-verity and loop devices
|
|
# for dm-X
|
|
allow apexd sysfs_dm:dir r_dir_perms;
|
|
allow apexd sysfs_dm:file rw_file_perms;
|
|
# for loopX
|
|
allow apexd sysfs_loop:dir r_dir_perms;
|
|
allow apexd sysfs_loop:file rw_file_perms;
|
|
|
|
# Allow apexd to log to the kernel.
|
|
allow apexd kmsg_device:chr_file w_file_perms;
|
|
|
|
# Allow apexd to reboot device. Required for rollbacks of apexes that are
|
|
# not covered by rollback manager.
|
|
set_prop(apexd, powerctl_prop)
|
|
|
|
# Allow apexd to stop itself
|
|
set_prop(apexd, ctl_apexd_prop)
|
|
|
|
# Find the vold service, and call into vold to manage FS checkpoints
|
|
allow apexd vold_service:service_manager find;
|
|
binder_call(apexd, vold)
|
|
|
|
# apexd is using bootstrap bionic
|
|
use_bootstrap_libs(apexd)
|
|
|
|
# Allow apexd to be invoked with logwrapper from init during userspace reboot.
|
|
allow apexd devpts:chr_file { read write };
|
|
|
|
# Allow apexd to create pts files via logwrap_fork_exec for its own use, to pass to
|
|
# other processes
|
|
create_pty(apexd)
|
|
|
|
# Allow apexd to read file contexts when performing restorecon of snapshots.
|
|
allow apexd file_contexts_file:file r_file_perms;
|
|
|
|
# Allow apexd to execute toybox for snapshot & restore
|
|
allow apexd toolbox_exec:file rx_file_perms;
|
|
|
|
# Allow apexd to release compressed blocks in case /data is f2fs-compressed fs.
|
|
allowxperm apexd staging_data_file:file ioctl {
|
|
FS_IOC_GETFLAGS
|
|
F2FS_IOC_RELEASE_COMPRESS_BLOCKS
|
|
};
|
|
|
|
# Allow apexd to read ro.cold_boot_done prop.
|
|
# apexd uses it to decide whether it needs to keep retrying polling for loop device.
|
|
get_prop(apexd, cold_boot_done_prop)
|
|
|
|
# Allow apexd to read per-device configuration properties.
|
|
get_prop(apexd, apexd_config_prop)
|
|
|
|
# Allow apexd to read apex selection properties.
|
|
# These are used to choose between multi-installed APEXes at activation time.
|
|
get_prop(apexd, apexd_select_prop)
|
|
#
|
|
# Allow apexd to read apexd_payload_metadata_prop
|
|
get_prop(apexd, apexd_payload_metadata_prop)
|
|
|
|
neverallow { domain -apexd -init } apex_data_file:dir no_w_dir_perms;
|
|
neverallow { domain -apexd -init } apex_metadata_file:dir no_w_dir_perms;
|
|
neverallow { domain -apexd -init -kernel } apex_data_file:file no_w_file_perms;
|
|
neverallow { domain -apexd -init -kernel } apex_metadata_file:file no_w_file_perms;
|
|
neverallow { domain -apexd } apex_mnt_dir:lnk_file no_w_file_perms;
|
|
|
|
neverallow { domain -apexd -init -vold_prepare_subdirs } apex_module_data_file:dir no_w_dir_perms;
|
|
neverallow { domain -apexd -init -vold_prepare_subdirs } apex_module_data_file:file no_w_file_perms;
|
|
|
|
neverallow { domain -apexd -init -vold_prepare_subdirs } apex_rollback_data_file:dir no_w_dir_perms;
|
|
neverallow { domain -apexd -init -vold_prepare_subdirs } apex_rollback_data_file:file no_w_file_perms;
|
|
|
|
# only apexd can set apexd sysprop
|
|
set_prop(apexd, apexd_prop)
|
|
neverallow { domain -apexd -init } apexd_prop:property_service set;
|
|
|
|
# only apexd can write apex-info-list.xml
|
|
neverallow { domain -apexd } apex_info_file:file no_w_file_perms;
|
|
|
|
# Only apexd and init should be allowed to manage /apex mounts
|
|
# A note on otapreopt_chroot. It used to mount APEXes during postainstall stage of A/B OTAs,
|
|
# but starting from S it just calls into apexd to prepare /apex for otapreoprt. Once the sepolicies
|
|
# around otapreopt_chroot are cleaned up we should be able to remove it from the lists below.
|
|
neverallow { domain -apexd -init -otapreopt_chroot } apex_mnt_dir:filesystem { mount unmount };
|
|
neverallow { domain -apexd -init -otapreopt_chroot } apex_mnt_dir:dir { mounton };
|
|
|
|
# Allow for use in postinstall
|
|
allow apexd otapreopt_chroot:fd use;
|
|
allow apexd postinstall_apex_mnt_dir:dir { create_dir_perms mounton };
|
|
allow apexd postinstall_apex_mnt_dir:file { create_file_perms relabelfrom };
|
|
allow apexd postinstall_apex_mnt_dir:lnk_file create;
|
|
allow apexd proc_filesystems:file r_file_perms;
|
|
|
|
# Allow calling derive_classpath to gather BCP information for staged sessions
|
|
domain_auto_trans(apexd, derive_classpath_exec, apexd_derive_classpath);
|