allow bpfloader to create symbolic links in /sys/fs/bpf
(this is to allow /sys/fs/bpf/tethering -> net_shared/tethering
for InProcessTethering, ie. Android Go devices)
Bug: 190523685
Bug: 236925089
Test: TreeHugger, manually on aosp_cf_x86_go_phone-userdebug
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: Ifa52429f958b0af80f91af6bfb064c1cdf9cd070
diff --git a/private/bpfdomain.te b/private/bpfdomain.te
index 2be7f88..ada65ae 100644
--- a/private/bpfdomain.te
+++ b/private/bpfdomain.te
@@ -12,3 +12,10 @@
neverallow { domain -bpfdomain } *:bpf *;
allow bpfdomain fs_bpf:dir search;
+
+# genfscon doesn't seem to trigger during symlink creation,
+# and thus any created symlinks end up as 'fs_bpf:lnk_type',
+# however this feels like a kernel bug / missing feature,
+# so let's allow all bpffs_type's instead,
+# this will keep things working even if this is fixed.
+allow bpfdomain bpffs_type:lnk_file read;