crash_dump: allow reading from pipes.

am: 914a7fb9

Change-Id: I053ba4143c225fc471c6c70afdcc0ce284060f69

public/crash_dump.te

@@ -23,9 +23,11 @@ userdebug_or_eng(`
 # Use inherited file descriptors
 allow crash_dump domain:fd use;
 
-# Write to the IPC pipe inherited from crashing processes.
+# Read/write IPC pipes inherited from crashing processes.
+allow crash_dump domain:fifo_file { read write };
+
 # Append to pipes given to us by processes requesting dumps (e.g. dumpstate)
-allow crash_dump domain:fifo_file { write append };
+allow crash_dump domain:fifo_file { append };
 
 r_dir_file(crash_dump, domain)
 allow crash_dump exec_type:file r_file_perms;