platform_system_sepolicy/private/fsverity_init.te

type fsverity_init, domain, coredomain;
type fsverity_init_exec, exec_type, file_type, system_file_type;

init_daemon_domain(fsverity_init)

# Allow to read /proc/keys for searching key id.
allow fsverity_init proc_keys:file r_file_perms;

# Ignore denials to access irrelevant keys, as a side effect to access /proc/keys.
dontaudit fsverity_init domain:key view;
allow fsverity_init kernel:key { view search write setattr };
allow fsverity_init fsverity_init:key { view search write };

# Allow init to write to /proc/sys/fs/verity/require_signatures
allow fsverity_init proc_fs_verity:file w_file_perms;

# Read the on-device signing certificate, to be able to add it to the keyring
allow fsverity_init odsign:fd use;
allow fsverity_init odsign_data_file:file { getattr read };

# When kernel requests an algorithm, the crypto API first looks for an
# already registered algorithm with that name. If it fails, the kernel creates
# an implementation of the algorithm from templates.
dontaudit fsverity_init kernel:system module_request;