Mention that securelevel 1 also blocks access to /dev/io if it

exists (not all platforms have it).

1 files changed, 3 insertions, 2 deletions

diff --git a/sbin/init/init.8 b/sbin/init/init.8
index 1ee8dda..09f2cd1 100644
--- a/sbin/init/init.8
+++ b/sbin/init/init.8
@@ -107,9 +107,10 @@ Secure mode \- the system immutable and system append-only flags may not
 be turned off;
 disks for mounted file systems,
 .Pa /dev/mem ,
-and
 .Pa /dev/kmem
-may not be opened for writing;
+and
+.Pa /dev/io
+(if your platform has it) may not be opened for writing;
 kernel modules (see
 .Xr kld 4 )
 may not be loaded or unloaded.