5fbbf2613c
This is an area that apexd can use to store session metadata, which won't be rolled back with filesystem checkpointing. Bug: 126740531 Test: builds Change-Id: I5abbc500dc1b92aa46830829be76e7a4381eef91
110 lines
4.1 KiB
Text
110 lines
4.1 KiB
Text
typeattribute apexd coredomain;
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init_daemon_domain(apexd)
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# Read /system/etc/security/apex_debug_key
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allow apexd apex_key_file:dir { search getattr };
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allow apexd apex_key_file:file r_file_perms;
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# Allow creating, reading and writing of APEX files/dirs in the APEX data dir
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allow apexd apex_data_file:dir create_dir_perms;
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allow apexd apex_data_file:file create_file_perms;
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# Allow creating, reading and writing of APEX files/dirs in the APEX metadata dir
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allow apexd metadata_file:dir search;
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allow apexd apex_metadata_file:dir create_dir_perms;
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allow apexd apex_metadata_file:file create_file_perms;
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# allow apexd to create loop devices with /dev/loop-control
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allow apexd loop_control_device:chr_file rw_file_perms;
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# allow apexd to access loop devices
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allow apexd loop_device:blk_file rw_file_perms;
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allowxperm apexd loop_device:blk_file ioctl {
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LOOP_GET_STATUS64
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LOOP_SET_STATUS64
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LOOP_SET_FD
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LOOP_SET_BLOCK_SIZE
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LOOP_SET_DIRECT_IO
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LOOP_CLR_FD
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BLKFLSBUF
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};
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# allow apexd to access /dev/block
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allow apexd block_device:dir r_dir_perms;
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# allow apexd to access /dev/block/dm-* (device-mapper entries)
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allow apexd dm_device:chr_file rw_file_perms;
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allow apexd dm_device:blk_file rw_file_perms;
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# sys_admin is required to access the device-mapper and mount
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allow apexd self:global_capability_class_set sys_admin;
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# allow apexd to create a mount point in /apex
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allow apexd apex_mnt_dir:dir create_dir_perms;
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# allow apexd to mount in /apex
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allow apexd apex_mnt_dir:filesystem { mount unmount };
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allow apexd apex_mnt_dir:dir mounton;
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# allow apexd to create symlinks in /apex
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allow apexd apex_mnt_dir:lnk_file create_file_perms;
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# allow apexd to unlink apex files in /data/apex/active
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# note that apexd won't be able to unlink files in /data/pkg_staging/session_XXXX,
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# because it doesn't have write permission for staging_data_file object.
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allow apexd staging_data_file:file unlink;
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# allow apexd to read files from /data/pkg_staging and hardlink them to /data/apex.
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allow apexd staging_data_file:dir r_dir_perms;
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allow apexd staging_data_file:file { r_file_perms link };
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# Unmount and mount filesystems
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allow apexd labeledfs:filesystem { mount unmount };
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# /sys directory tree traversal
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allow apexd sysfs_type:dir search;
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# Configure read-ahead of dm-verity and loop devices
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# for dm-X
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allow apexd sysfs_dm:dir r_dir_perms;
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allow apexd sysfs_dm:file rw_file_perms;
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# for loopX
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allow apexd sysfs_loop:dir r_dir_perms;
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allow apexd sysfs_loop:file rw_file_perms;
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# Spawning a libbinder thread results in a dac_override deny,
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# /dev/cpuset/tasks is owned by system.
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#
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# See b/35323867#comment3
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dontaudit apexd self:global_capability_class_set { dac_override dac_read_search };
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# Allow apexd to log to the kernel.
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allow apexd kmsg_device:chr_file w_file_perms;
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# Allow apexd to reboot device. Required for rollbacks of apexes that are
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# not covered by rollback manager.
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set_prop(apexd, powerctl_prop)
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# Apex pre- & post-install permission.
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# Allow self-execute for the fork mount helper.
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allow apexd apexd_exec:file execute_no_trans;
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# Unshare and make / private so that hooks cannot influence the
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# running system.
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allow apexd rootfs:dir mounton;
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# Allow to execute shell for pre- and postinstall scripts. A transition
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# rule is required, thus restricted to execute and not execute_no_trans.
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allow apexd shell_exec:file { r_file_perms execute };
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# Allow transition to ART APEX preinstall domain.
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domain_auto_trans(apexd, art_apex_preinstall_exec, art_apex_preinstall)
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# Allow transition to ART APEX postinstall domain.
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domain_auto_trans(apexd, art_apex_postinstall_exec, art_apex_postinstall)
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# Allow transition to test APEX preinstall domain.
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userdebug_or_eng(`
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domain_auto_trans(apexd, apex_test_prepostinstall_exec, apex_test_prepostinstall)
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')
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neverallow { domain -apexd -init } apex_data_file:dir no_w_dir_perms;
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neverallow { domain -apexd -init } apex_metadata_file:dir no_w_dir_perms;
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neverallow { domain -apexd -init -kernel } apex_data_file:file no_w_file_perms;
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neverallow { domain -apexd -init -kernel } apex_metadata_file:file no_w_file_perms;
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neverallow { domain -apexd } apex_mnt_dir:lnk_file no_w_file_perms;
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