platform_system_sepolicy/private/bpfloader.te
Maciej Żenczykowski 37ca69e5c8 sepolicy: allow netutils_wrapper access to fs_bpf_vendor
This is needed to allow vendor xt_bpf programs.

Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I7ff8a0319bec2f3a57c7ce48939b13b2fca182de
2024-01-20 23:56:37 +00:00

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type bpfloader_exec, system_file_type, exec_type, file_type;
typeattribute bpfloader bpfdomain;
# allow bpfloader to write to the kernel log (starts early)
allow bpfloader kmsg_device:chr_file w_file_perms;
# These permissions are required to pin ebpf maps & programs.
allow bpfloader bpffs_type:dir { add_name create remove_name search write };
allow bpfloader bpffs_type:file { create getattr read rename setattr };
allow bpfloader bpffs_type:lnk_file { create getattr read };
allow { bpffs_type -fs_bpf } fs_bpf:filesystem associate;
# Allow bpfloader to create bpf maps and programs.
allow bpfloader self:bpf { map_create map_read map_write prog_load prog_run };
allow bpfloader self:capability { chown sys_admin net_admin };
allow bpfloader sysfs_fs_fuse_bpf:file r_file_perms;
allow bpfloader proc_bpf:file w_file_perms;
set_prop(bpfloader, bpf_progs_loaded_prop)
allow bpfloader bpfloader_exec:file execute_no_trans;
###
### Neverallow rules
###
# Note: we don't care about getattr/mounton/search
neverallow { domain } bpffs_type:dir ~{ add_name create getattr mounton remove_name search write };
neverallow { domain -bpfloader } bpffs_type:dir { add_name create remove_name write };
neverallow { domain } bpffs_type:file ~{ create getattr map open read rename setattr write };
neverallow { domain -bpfloader } bpffs_type:file { create map open rename setattr };
neverallow { domain -bpfloader -gpuservice -lmkd -mediaprovider_app -netd -netutils_wrapper -system_server } fs_bpf:file { getattr read };
neverallow { domain -bpfloader } fs_bpf_loader:file { getattr read };
neverallow { domain -bpfloader -network_stack } fs_bpf_net_private:file { getattr read };
neverallow { domain -bpfloader -network_stack -system_server } fs_bpf_net_shared:file { getattr read };
neverallow { domain -bpfloader -netd -network_stack -system_server } fs_bpf_netd_readonly:file { getattr read };
neverallow { domain -bpfloader -netd -netutils_wrapper -network_stack -system_server } fs_bpf_netd_shared:file { getattr read };
neverallow { domain -bpfloader -network_stack } fs_bpf_tethering:file { getattr read };
neverallow { domain -bpfloader -uprobestats } fs_bpf_uprobestats:file { getattr read };
neverallow { domain -bpfloader -gpuservice -netd -netutils_wrapper -network_stack -system_server -uprobestats } { bpffs_type -fs_bpf_vendor }:file write;
neverallow { domain -bpfloader } bpffs_type:lnk_file ~read;
neverallow { domain -bpfdomain } bpffs_type:lnk_file read;
neverallow { domain -bpfloader } *:bpf { map_create prog_load };
# 'fs_bpf_loader' is for internal use of the BpfLoader oneshot boot time process.
neverallow { domain -bpfloader } fs_bpf_loader:bpf *;
neverallow { domain -bpfloader } fs_bpf_loader:file *;
neverallow {
domain
-bpfloader
-gpuservice
-hal_health_server
-mediaprovider_app
-netd
-netutils_wrapper
-network_stack
-system_server
-uprobestats
} *:bpf prog_run;
neverallow { domain -bpfloader -gpuservice -lmkd -mediaprovider_app -netd -network_stack -system_server -uprobestats } *:bpf { map_read map_write };
neverallow { domain -bpfloader -init } bpfloader_exec:file { execute execute_no_trans };
neverallow { coredomain -bpfloader -netd -netutils_wrapper } fs_bpf_vendor:file *;
neverallow bpfloader *:{ tcp_socket udp_socket rawip_socket } *;
# No domain should be allowed to ptrace bpfloader
neverallow { domain userdebug_or_eng(`-llkd') } bpfloader:process ptrace;
neverallow { domain -bpfloader } proc_bpf:file write;