261ea86192
Give apexd permission to execute sh. Add userdebug_or_eng domains and rules for the test APEX for pre- and post-install. Bug: 119260955 Bug: 119261380 Test: atest apexservice_test Change-Id: I0c4a5e35e096101a53c9d1f212d2db2e63728267
89 lines
3.1 KiB
Text
89 lines
3.1 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 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 relabel apk_tmp_file to apex_data_file.
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# TODO(b/112669193) remove this when APEXes are staged via file descriptor
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allow apexd apk_tmp_file:file relabelfrom;
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allow apexd apex_data_file:file relabelto;
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# allow apexd to read files from /data/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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# 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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# 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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# 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 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 -kernel } apex_data_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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