[Android Q&A, Help & Troubleshooting] natmendes:
I'm trying to build an AOSP 9 with a new daemon, but the SELinux isn't allowing me.

My sierra_config_ip.te has this beginning of document:

type sierra_config_ip, domain;
permissive sierra_config_ip;
type sierra_config_ip_exec, exec_type, file_type;

init_daemon_domain(sierra_config_ip)

My file_contexts is:

/(vendor|system/vendor)/bin/init.config.ip u:object_r:sierra_config_ip_exec:s0

My init.rc is:

service sierra_config_ip /vendor/bin/init.config.ip
class main
user root
group radio cache inet misc dhcp
capabilities BLOCK_SUSPEND NET_ADMIN NET_RAW
disabled
oneshot

But I always get the following error:

[ 0% 3/56037] build out/target/product/evk_8mm/obj/ETC/sepolicy_neverallows_intermediates/sepolicy_neverallows
FAILED: out/target/product/evk_8mm/obj/ETC/sepolicy_neverallows_intermediates/sepolicy_neverallows
/bin/bash -c "(rm -f out/target/product/evk_8mm/obj/ETC/sepolicy_neverallows_intermediates/sepolicy_neverallows ) && (ASAN_OPTIONS=detect_leaks=0 out/host/linux-x86/bin/checkpolicy -M -c	30 -o out/target/product/evk_8mm/obj/ETC/sepolicy_neverallows_intermediates/sepolicy_neverallows out/target/product/evk_8mm/obj/ETC/sepolicy_neverallows_intermediates/policy.conf )"
libsepol.report_failure: neverallow on line 1005 of system/sepolicy/public/domain.te (or line 11245 of policy.conf) violated by allow sierra_dhcpcd sierra_dhcpcd_exec:file { execute entrypoint };
libsepol.report_failure: neverallow on line 1005 of system/sepolicy/public/domain.te (or line 11245 of policy.conf) violated by allow sierra_config_ip sierra_config_ip_exec:file { execute entrypoint };
libsepol.report_failure: neverallow on line 1005 of system/sepolicy/public/domain.te (or line 11245 of policy.conf) violated by allow sierra_config_ip toolbox_exec:file { execute execute_no_trans };
libsepol.report_failure: neverallow on line 1005 of system/sepolicy/public/domain.te (or line 11245 of policy.conf) violated by allow sierra_config_ip dhcp_exec:file { execute execute_no_trans };
libsepol.report_failure: neverallow on line 1005 of system/sepolicy/public/domain.te (or line 11245 of policy.conf) violated by allow sierra_config_ip shell_exec:file { execute execute_no_trans };
libsepol.report_failure: neverallow on line 1005 of system/sepolicy/public/domain.te (or line 11245 of policy.conf) violated by allow sierra_dhcpcd toolbox_exec:file { execute execute_no_trans };
libsepol.report_failure: neverallow on line 873 of system/sepolicy/public/domain.te (or line 10996 of policy.conf) violated by allow sierra_config_ip net_data_file:dir { search };
libsepol.report_failure: neverallow on line 873 of system/sepolicy/public/domain.te (or line 10996 of policy.conf) violated by allow sierra_dhcpcd net_data_file:dir { search };
libsepol.report_failure: neverallow on line 846 of system/sepolicy/public/domain.te (or line 10945 of policy.conf) violated by allow sierra_config_ip net_data_file:file { open };
libsepol.report_failure: neverallow on line 846 of system/sepolicy/public/domain.te (or line 10945 of policy.conf) violated by allow sierra_config_ip dhcp_data_file:file { create setattr lock map unlink rename open };
libsepol.check_assertions: 10 neverallow failures occurred
Error while expanding policy

I don't know why is not working, I followed the steps described in other topics here. Can someone help me with this?

Besides that, I tried to disable SELinux to finally be able to build Android. To do this, i put it

enforcing=0 androidboot.selinux=permissive

in BOARD_KERNEL_CMDLINE in BoardConfig.mk but the policys are builded before and the error occurs again!

I also tried putting -sierra_config_ip in domain.te:

full_treble_only(`
# Do not allow vendor components to execute files from system
# except for the ones whitelist here.
neverallow {
domain
-coredomain
-appdomain
-vendor_executes_system_violators
-vendor_init
-evs_domain
-sierra_config_ip
} {
exec_type
-vendor_file_type
-crash_dump_exec
-netutils_wrapper_exec
}:file { entrypoint execute execute_no_trans };
')

But I get the following error:

system/sepolicy/public/domain.te:1005:ERROR 'unknown type sierra_config_ip' at token ';' on line 11251:
#line 1005
}:file { entrypoint execute execute_no_trans };

Thanks in advance for any help! :)