# Copyright (C) 2005 Tresys Technology, LLC

policy_module(devices,1.0)

#

# Device types

#

attribute device_node;

#

# device_t is the type of /dev.

#

type device_t;

files_make_file(device_t)

files_make_mountpoint(device_t)

filesystem_tmpfs_associate(device_t)

# Only directories and symlinks should be labeled device_t.

# If there are other files with this type, it is wrong.

# Relabelto is allowed for setfiles to function, in case

# a device node has no specific type yet, but is for some

# reason labeled with a specific type

neverallow * device_t:{ file fifo_file sock_file chr_file blk_file } ~{ getattr setattr relabelfrom relabelto };

#

# zero_device_t is the type of /dev/zero.

#

type zero_device_t, device_node;

filesystem_associate(zero_device_t)

filesystem_tmpfs_associate(zero_device_t)

#

# null_device_t is the type of /dev/null.

#

type null_device_t, device_node;

filesystem_associate(null_device_t)

filesystem_tmpfs_associate(null_device_t)

#

# memory_device_t is the type of /dev/kmem,

# /dev/mem and /dev/port.

#

type memory_device_t, device_node;

filesystem_associate(memory_device_t)

filesystem_tmpfs_associate(memory_device_t)

attribute memory_raw_read;

attribute memory_raw_write;

neverallow ~memory_raw_read memory_device_t:{ chr_file blk_file } read;

neverallow ~memory_raw_write memory_device_t:{ chr_file blk_file } { append write };

#

# random_device_t is the type of /dev/random

# urandom_device_t is the type of /dev/urandom

#

type random_device_t, device_node;

type urandom_device_t, device_node;

filesystem_associate(random_device_t)

filesystem_associate(urandom_device_t)

filesystem_tmpfs_associate(random_device_t)

filesystem_tmpfs_associate(urandom_device_t)

#

# Type for /dev/agpgart

#

type agp_device_t, device_node;

filesystem_associate(agp_device_t)

filesystem_tmpfs_associate(agp_device_t)

#

# Type for /dev/apm_bios

#

type apm_bios_t, device_node;

filesystem_associate(apm_bios_t)

filesystem_tmpfs_associate(apm_bios_t)

#

# clock_device_t is the type of

# /dev/rtc.

#

type clock_device_t, device_node;

filesystem_associate(clock_device_t)

filesystem_tmpfs_associate(clock_device_t)

#

# cpu control devices /dev/cpu/0/*

#

type cpu_device_t, device_node;

filesystem_associate(cpu_device_t)

filesystem_tmpfs_associate(cpu_device_t)

#

# Type for framebuffer /dev/fb/*

#

type framebuf_device_t, device_node;

filesystem_associate(framebuf_device_t)

filesystem_tmpfs_associate(framebuf_device_t)

#

# Type for /dev/cpu/mtrr and /proc/mtrr

#

type mtrr_device_t, device_node;

filesystem_associate(mtrr_device_t)

filesystem_tmpfs_associate(mtrr_device_t)

genfscon proc /mtrr system_u:object_r:mtrr_device_t

#

# Type for /dev/pmu 

#

type power_device_t, device_node;

filesystem_associate(power_device_t)

filesystem_tmpfs_associate(power_device_t)

#

# Type for sound devices and mixers

#

type sound_device_t, device_node;

filesystem_associate(sound_device_t)

filesystem_tmpfs_associate(sound_device_t)