# 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)
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)