1 # ueventd seclabel is specified in init.rc since 2 # it lives in the rootfs and has no unique file type. 3 type ueventd, domain, domain_deprecated; 4 tmpfs_domain(ueventd) 5 6 # TODO: why is ueventd using __kmsg__ when it should just create 7 # and use /dev/kmsg instead? 8 type_transition ueventd device:chr_file klog_device "__kmsg__"; 9 allow ueventd klog_device:chr_file { create open write unlink }; 10 11 security_access_policy(ueventd) 12 allow ueventd init:process sigchld; 13 allow ueventd self:capability { chown mknod net_admin setgid fsetid sys_rawio dac_override fowner }; 14 allow ueventd device:file create_file_perms; 15 allow ueventd device:chr_file rw_file_perms; 16 allow ueventd sysfs:file rw_file_perms; 17 allow ueventd sysfs_usb:file w_file_perms; 18 allow ueventd sysfs_hwrandom:file w_file_perms; 19 allow ueventd sysfs_zram_uevent:file w_file_perms; 20 allow ueventd sysfs_type:{ file lnk_file } { relabelfrom relabelto setattr getattr }; 21 allow ueventd sysfs_type:dir { relabelfrom relabelto setattr r_dir_perms }; 22 allow ueventd sysfs_devices_system_cpu:file rw_file_perms; 23 allow ueventd tmpfs:chr_file rw_file_perms; 24 allow ueventd dev_type:dir create_dir_perms; 25 allow ueventd dev_type:lnk_file { create unlink }; 26 allow ueventd dev_type:chr_file { create setattr unlink }; 27 allow ueventd dev_type:blk_file { relabelfrom relabelto create setattr unlink }; 28 allow ueventd self:netlink_kobject_uevent_socket create_socket_perms; 29 allow ueventd efs_file:dir search; 30 allow ueventd efs_file:file r_file_perms; 31 32 # Use setfscreatecon() to label /dev directories and files. 33 allow ueventd self:process setfscreate; 34 35 ##### 36 ##### neverallow rules 37 ##### 38 39 # ueventd must never set properties, otherwise deadlocks may occur. 40 # https://android-review.googlesource.com/#/c/133120/6/init/devices.cpp@941 41 # No writing to the property socket, connecting to init, or setting properties. 42 neverallow ueventd property_socket:sock_file write; 43 neverallow ueventd init:unix_stream_socket connectto; 44 neverallow ueventd property_type:property_service set; 45
