Expose filesystem read events in SELinux policy.

Without this, we only have visibility into writes.

Looking at traces, we realised for many of the files we care about (.dex, .apk)
most filesystem events are actually reads.

See aosp/661782 for matching filesystem permission change.

Bug: 73625480

Change-Id: I6ec71d82fad8f4679c7b7d38e3cb90aff0b9e298

private/genfs_contexts

@@ -146,12 +146,17 @@ genfscon debugfs /tracing/events/regulator/                          u:object_r:
 genfscon debugfs /tracing/events/pagecache/                          u:object_r:debugfs_tracing_debug:s0
 genfscon debugfs /tracing/events/irq/                                u:object_r:debugfs_tracing_debug:s0
 genfscon debugfs /tracing/events/ipi/                                u:object_r:debugfs_tracing_debug:s0
+genfscon debugfs /tracing/events/f2fs/f2fs_get_data_block/           u:object_r:debugfs_tracing:s0
+genfscon debugfs /tracing/events/f2fs/f2fs_iget/                     u:object_r:debugfs_tracing:s0
 genfscon debugfs /tracing/events/f2fs/f2fs_sync_file_enter/          u:object_r:debugfs_tracing:s0
 genfscon debugfs /tracing/events/f2fs/f2fs_sync_file_exit/           u:object_r:debugfs_tracing:s0
 genfscon debugfs /tracing/events/f2fs/f2fs_write_begin/              u:object_r:debugfs_tracing:s0
 genfscon debugfs /tracing/events/f2fs/f2fs_write_end/                u:object_r:debugfs_tracing:s0
 genfscon debugfs /tracing/events/ext4/ext4_da_write_begin/           u:object_r:debugfs_tracing:s0
 genfscon debugfs /tracing/events/ext4/ext4_da_write_end/             u:object_r:debugfs_tracing:s0
+genfscon debugfs /tracing/events/ext4/ext4_es_lookup_extent_enter/   u:object_r:debugfs_tracing:s0
+genfscon debugfs /tracing/events/ext4/ext4_es_lookup_extent_exit/    u:object_r:debugfs_tracing:s0
+genfscon debugfs /tracing/events/ext4/ext4_load_inode/               u:object_r:debugfs_tracing:s0
 genfscon debugfs /tracing/events/ext4/ext4_sync_file_enter/          u:object_r:debugfs_tracing:s0
 genfscon debugfs /tracing/events/ext4/ext4_sync_file_exit/           u:object_r:debugfs_tracing:s0
 genfscon debugfs /tracing/events/block/block_rq_issue/               u:object_r:debugfs_tracing:s0
@@ -163,12 +168,17 @@ genfscon tracefs /events/regulator/                          u:object_r:debugfs_
 genfscon tracefs /events/pagecache/                          u:object_r:debugfs_tracing_debug:s0
 genfscon tracefs /events/irq/                                u:object_r:debugfs_tracing_debug:s0
 genfscon tracefs /events/ipi/                                u:object_r:debugfs_tracing_debug:s0
+genfscon tracefs /events/f2fs/f2fs_get_data_block/           u:object_r:debugfs_tracing:s0
+genfscon tracefs /events/f2fs/f2fs_iget/                     u:object_r:debugfs_tracing:s0
 genfscon tracefs /events/f2fs/f2fs_sync_file_enter/          u:object_r:debugfs_tracing:s0
 genfscon tracefs /events/f2fs/f2fs_sync_file_exit/           u:object_r:debugfs_tracing:s0
 genfscon tracefs /events/f2fs/f2fs_write_begin/              u:object_r:debugfs_tracing:s0
 genfscon tracefs /events/f2fs/f2fs_write_end/                u:object_r:debugfs_tracing:s0
 genfscon tracefs /events/ext4/ext4_da_write_begin/           u:object_r:debugfs_tracing:s0
 genfscon tracefs /events/ext4/ext4_da_write_end/             u:object_r:debugfs_tracing:s0
+genfscon tracefs /events/ext4/ext4_es_lookup_extent_enter/   u:object_r:debugfs_tracing:s0
+genfscon tracefs /events/ext4/ext4_es_lookup_extent_exit/    u:object_r:debugfs_tracing:s0
+genfscon tracefs /events/ext4/ext4_load_inode/               u:object_r:debugfs_tracing:s0
 genfscon tracefs /events/ext4/ext4_sync_file_enter/          u:object_r:debugfs_tracing:s0
 genfscon tracefs /events/ext4/ext4_sync_file_exit/           u:object_r:debugfs_tracing:s0
 genfscon tracefs /events/block/block_rq_issue/               u:object_r:debugfs_tracing:s0