Allow init to write to /sys/module/dm_bufio/parameters/max_age_seconds
Label max_age_seconds with sysfs_dm_verity so that init can write to it
to set the dm-verity cache timeout.
Technically this file is for dm-bufio, not for dm-verity specifically;
writing to it affects any device-mapper target that uses dm-bufio. But
since dm-verity is the only user of dm-bufio on Android devices, it
doesn't seem worth adding a new label. Let's just consider it to be
another dm-verity tunable similar to prefetch_cluster.
Bug: 335233956
Test: cat /sys/module/dm_bufio/parameters/max_age_seconds
Change-Id: If8901e7f5aa4e8e3dd81639792cd4a4cd1273bfa
diff --git a/private/genfs_contexts b/private/genfs_contexts
index a257ce6..3ff1012 100644
--- a/private/genfs_contexts
+++ b/private/genfs_contexts
@@ -175,6 +175,7 @@
genfscon sysfs /kernel/uevent_helper u:object_r:sysfs_usermodehelper:s0
genfscon sysfs /kernel/wakeup_reasons u:object_r:sysfs_wakeup_reasons:s0
genfscon sysfs /kernel/dmabuf/buffers u:object_r:sysfs_dmabuf_stats:s0
+genfscon sysfs /module/dm_bufio/parameters/max_age_seconds u:object_r:sysfs_dm_verity:s0
genfscon sysfs /module/dm_verity/parameters/prefetch_cluster u:object_r:sysfs_dm_verity:s0
genfscon sysfs /module/lowmemorykiller u:object_r:sysfs_lowmemorykiller:s0
genfscon sysfs /module/tcp_cubic/parameters u:object_r:sysfs_net:s0