3e113edf02
Add a compile time assertion that no SELinux rules exist which allow ueventd to set properties, or even connect to the property socket. See https://android-review.googlesource.com/#/c/133120/6/init/devices.cpp@941 for details. Change-Id: Ia9e932a3d94443d70644b14f36c74df4be7e9e32
36 lines
1.6 KiB
Text
36 lines
1.6 KiB
Text
# ueventd seclabel is specified in init.rc since
|
|
# it lives in the rootfs and has no unique file type.
|
|
type ueventd, domain;
|
|
tmpfs_domain(ueventd)
|
|
write_klog(ueventd)
|
|
security_access_policy(ueventd)
|
|
allow ueventd init:process sigchld;
|
|
allow ueventd self:capability { chown mknod net_admin setgid fsetid sys_rawio dac_override fowner };
|
|
allow ueventd device:file create_file_perms;
|
|
allow ueventd device:chr_file rw_file_perms;
|
|
allow ueventd sysfs:file rw_file_perms;
|
|
allow ueventd sysfs_type:{ file lnk_file } { relabelfrom relabelto setattr getattr };
|
|
allow ueventd sysfs_type:dir { relabelfrom relabelto setattr r_dir_perms };
|
|
allow ueventd sysfs_devices_system_cpu:file rw_file_perms;
|
|
allow ueventd tmpfs:chr_file rw_file_perms;
|
|
allow ueventd dev_type:dir create_dir_perms;
|
|
allow ueventd dev_type:lnk_file { create unlink };
|
|
allow ueventd dev_type:chr_file { create setattr unlink };
|
|
allow ueventd dev_type:blk_file { create setattr unlink };
|
|
allow ueventd self:netlink_kobject_uevent_socket create_socket_perms;
|
|
allow ueventd efs_file:dir search;
|
|
allow ueventd efs_file:file r_file_perms;
|
|
|
|
# Use setfscreatecon() to label /dev directories and files.
|
|
allow ueventd self:process setfscreate;
|
|
|
|
#####
|
|
##### neverallow rules
|
|
#####
|
|
|
|
# ueventd must never set properties, otherwise deadlocks may occur.
|
|
# https://android-review.googlesource.com/#/c/133120/6/init/devices.cpp@941
|
|
# No writing to the property socket, connecting to init, or setting properties.
|
|
neverallow ueventd property_socket:sock_file write;
|
|
neverallow ueventd init:unix_stream_socket connectto;
|
|
neverallow ueventd property_type:property_service set;
|