12b7ccd8f7
We have created a new directory called /data/apex/decompressed. All files under this directory will have staging_data_file label, but the directory itself needs to have apex_data_file label. This is because apexd needs to write inside this directory and we don't want to give apexd write access to staging_data_file label. When a file is written under this directory, it gets its parent's label. So we need to restore the proper labeling. Hence, we are allowing apexd labeling permissions. Bug: 172911820 Test: atest ApexCompressionTests#testCompressedApexIsActivated Change-Id: I0a910fa5591b2aace70804701545eb4ac510ec24
176 lines
7.2 KiB
Text
176 lines
7.2 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 apexd to create files and directories for snapshots of apex data
|
|
allow apexd apex_art_data_file:dir { create_dir_perms relabelto };
|
|
allow apexd apex_art_data_file:file { create_file_perms relabelto };
|
|
allow apexd apex_permission_data_file:dir { create_dir_perms relabelto };
|
|
allow apexd apex_permission_data_file: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 apex_wifi_data_file:dir { create_dir_perms relabelto };
|
|
allow apexd apex_wifi_data_file:file { create_file_perms relabelto };
|
|
|
|
# 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 block_device:dir r_dir_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;
|
|
# 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;
|
|
# 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)
|
|
|
|
# Apex pre- & post-install permission.
|
|
|
|
# Allow self-execute for the fork mount helper.
|
|
allow apexd apexd_exec:file execute_no_trans;
|
|
|
|
# Unshare and make / private so that hooks cannot influence the
|
|
# running system.
|
|
allow apexd rootfs:dir mounton;
|
|
|
|
# Allow to execute shell for pre- and postinstall scripts. A transition
|
|
# rule is required, thus restricted to execute and not execute_no_trans.
|
|
allow apexd shell_exec:file { r_file_perms execute };
|
|
|
|
# apexd is using bootstrap bionic
|
|
allow apexd system_bootstrap_lib_file:dir r_dir_perms;
|
|
allow apexd system_bootstrap_lib_file:file { execute read open getattr map };
|
|
|
|
# Allow transition to test APEX preinstall domain.
|
|
userdebug_or_eng(`
|
|
domain_auto_trans(apexd, apex_test_prepostinstall_exec, apex_test_prepostinstall)
|
|
')
|
|
|
|
# Allow transition to GKI update pre/post install domain
|
|
domain_auto_trans(apexd, gki_apex_prepostinstall_exec, gki_apex_prepostinstall)
|
|
|
|
# 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 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)
|
|
|
|
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;
|