selinux-policy/refpolicy/policy/modules/system/mount.te

# Copyright (C) 2005 Tresys Technology, LLC

type mount_t;
type mount_exec_t;
domain_make_system_domain(mount_t,mount_exec_t)
role system_r types mount_t;

type mount_tmp_t;
files_make_temporary_file(mount_tmp_t)

########################################
#
# mount local policy
#

allow mount_t self:capability { ipc_lock sys_rawio sys_admin dac_override chown };

allow mount_t mount_tmp_t:file { getattr create read setattr write setattr unlink };
allow mount_t mount_tmp_t:dir { getattr search create read setattr write setattr unlink rmdir };

kernel_read_system_state(mount_t)
kernel_ignore_use_file_descriptors(mount_t)

devices_get_all_block_device_attributes(mount_t)
devices_list_device_nodes(mount_t)

storage_raw_read_fixed_disk(mount_t)
storage_raw_write_fixed_disk(mount_t)
storage_raw_read_removable_device(mount_t)
storage_raw_write_removable_device(mount_t)

filesystem_get_persistent_filesystem_attributes(mount_t)
filesystem_mount_all_filesystems(mount_t)
filesystem_unmount_all_filesystems(mount_t)
filesystem_remount_all_filesystems(mount_t)
files_unmount_root_filesystem(mount_t)

terminal_use_console(mount_t)

corenetwork_ignore_bind_tcp_on_all_reserved_ports(mount_t)
corenetwork_ignore_bind_udp_on_all_reserved_ports(mount_t)

init_use_file_descriptors(mount_t)
init_script_use_pseudoterminal(mount_t)

domain_use_widely_inheritable_file_descriptors(mount_t)

files_search_all_directories(mount_t)
files_create_private_tmp_data(mount_t,mount_tmp_t,{ file dir })
files_read_general_system_config(mount_t)
files_create_runtime_system_config(mount_t)
files_mount_on_all_mountpoints(mount_t)

libraries_use_dynamic_loader(mount_t)
libraries_read_shared_libraries(mount_t)

# required for mount.smbfs
corecommands_execute_system_programs(mount_t)
corecommands_execute_general_programs(mount_t)

logging_send_system_log_message(mount_t)

miscfiles_read_localization(mount_t)

ifdef(`TODO',`
# Mount, remount and unmount file systems.
# nfsv4 has a filesystem to mount for its userspace daemons
allow mount_t var_lib_nfs_t:dir mounton;

# TODO: Need to examine this further. Not sure how to handle this
#type sysadm_mount_source_t, file_type, sysadmfile, $1_file_type;
#allow sysadm_t sysadm_mount_source_t:file create_file_perms;
#allow sysadm_t sysadm_mount_source_t:file { relabelto relabelfrom };
#allow mount_t sysadm_mount_source_t:file rw_file_perms;

# TODO: Probably need a macro for reading/unlinking files
# for when /etc/mtab loses its type
allow mount_t file_t:file { getattr read unlink };

# TODO: Need macro for granting relabelto, relabelfrom
allow mount_t fs_t:filesystem relabelfrom;

# This rule needs to be generalized.  Only admin, initrc should have it.
allow mount_t file_type:filesystem { unmount mount relabelto };

allow mount_t userdomain:fd use;

domain_auto_trans(sysadm_t, mount_exec_t, mount_t)
role sysadm_r types mount_t;
allow mount_t sysadm_tty_device_t:chr_file { getattr read write ioctl };
allow mount_t sysadm_devpts_t:chr_file { getattr read write };
ifdef(`gnome-pty-helper.te', `
allow mount_t sysadm_gph_t:fd use;
')

tunable_policy(`distro_redhat',`
optional_policy(`authlogin.te',`
r_dir_file($2_t,pam_var_console_t)
# mount config by default sets fscontext=removable_t
allow $2_t dosfs_t:filesystem relabelfrom;
') dnl end authlogin
') dnl end distro_redhat

optional_policy(`rhgb.te', `
allow mount_t rhgb_t:process sigchld;
allow mount_t rhgb_t:fd use;
allow mount_t rhgb_t:fifo_file { read write };
')

tunable_policy(`distro_redhat', `
allow mount_t tmpfs_t:chr_file { read write };
allow mount_t tmpfs_t:dir mounton;
')

optional_policy(`automount.te', `
allow mount_t autofs_t:dir read;
')

optional_policy(`portmap.te', `
# for nfs
can_ypbind(mount_t)
can_udp_send(mount_t, portmap_t)
can_udp_send(portmap_t, mount_t)
allow mount_t rpc_pipefs_t:dir search;
corenetwork_network_tcp_on_all_interfaces(mount_t)
corenetwork_network_raw_on_all_interfaces(mount_t)
corenetwork_network_udp_on_all_interfaces(mount_t)
corenetwork_network_tcp_on_all_nodes(mount_t)
corenetwork_network_raw_on_all_nodes(mount_t)
corenetwork_network_udp_on_all_nodes(mount_t)
corenetwork_network_tcp_on_all_ports(mount_t)
corenetwork_network_udp_on_all_ports(mount_t)
corenetwork_bind_tcp_on_all_nodes(mount_t)
corenetwork_bind_udp_on_all_nodes(mount_t)
corenetwork_bind_tcp_on_general_port(mount_t)
corenetwork_bind_udp_on_general_port(mount_t)
corenetwork_bind_tcp_on_reserved_port(mount_t)
corenetwork_bind_udp_on_reserved_port(mount_t)
')

') dnl endif TODO