Add sample policy for cat(1). am: 1a9e9101a2
am: 5065377d5e

Change-Id: Ic4b26ce0f5de770173b57504f76929f6d68e1adf
diff --git a/examples/cat.policy b/examples/cat.policy
new file mode 100644
index 0000000..dea3dd3
--- /dev/null
+++ b/examples/cat.policy
@@ -0,0 +1,16 @@
+# In this directory, test with:
+# make LIBDIR=.
+# ./minijail0 -n -S examples/cat.policy -- /bin/cat /proc/self/status
+# This policy only works on x86_64.
+
+read: 1
+write: 1
+rt_sigreturn: 1
+exit_group: 1
+
+open: 1
+close: 1
+fstat: 1
+# Enforce W^X.
+mmap: arg2 in ~PROT_EXEC || arg2 in ~PROT_WRITE
+fadvise64: 1