selinux-policy/refpolicy/policy/modules/kernel/terminal.if

## <summary>Policy for terminals.</summary>

########################################
## <desc>
##	Transform specified type into a pty type.
## </desc>
## <param name="pty_type">
##	An object type that will applied to a pty.
## </param>
#
interface(`term_pty',`
	gen_require(`
		attribute ptynode;
		type devpts_t;
		class filesystem associate;
	')

	allow $1 devpts_t:filesystem associate;
	typeattribute $1 ptynode;
')

########################################
## <desc>
##	Transform specified type into an user
##	pty type. This allows it to be relabeled via
##	type change by login programs such as ssh.
## </desc>
## <param name="userdomain">
##	The type of the user domain associated with
##	this pty.
## </param>
## <param name="object_type">
##	An object type that will applied to a pty.
## </param>
#
interface(`term_user_pty',`
	gen_require(`
		attribute server_ptynode;
	')

	term_pty($2)
	type_change $2 server_ptynode:chr_file $1;
')

########################################
## <desc>
##	Transform specified type into a pty type
##	used by login programs, such as sshd.
## </desc>
## <param name="pty_type">
##	An object type that will applied to a pty.
## </param>
#
interface(`term_login_pty',`
	gen_require(`
		attribute server_ptynode;
	')

	term_pty($1)
	typeattribute $1 server_ptynode;
')

########################################
## <desc>
##	Transform specified type into a tty type.
## </desc>
## <param name="tty_type">
##	An object type that will applied to a tty.
## </param>
#
interface(`term_tty',`
	gen_require(`
		attribute ttynode;
		type tty_device_t;
	')

	typeattribute $2 ttynode;
	type_change $1 tty_device_t:chr_file $2;

	# Debian login is from shadow utils and does not allow resetting the perms.
	# have to fix this!
	ifdef(`distro_debian',`
		type_change $1 ttynode:chr_file $2;
	')

	ifdef(`distro_redhat',`
		fs_associate_tmpfs($2)
	')
')

########################################
## <desc>
##	Create a pty in the /dev/pts directory.
## </desc>
## <param name="domain">
##	The type of the process creating the pty.
## </param>
## <param name="pty_type">
##	The type of the pty.
## </param>
#
interface(`term_create_pty',`
	gen_require(`
		type bsdpty_device_t, devpts_t, ptmx_t;
		class filesystem getattr;
		class dir r_dir_perms;
		class chr_file rw_file_perms;
	')

	dev_list_all_dev_nodes($1)
	allow $1 ptmx_t:chr_file rw_file_perms;

	allow $1 devpts_t:dir r_dir_perms;
	allow $1 devpts_t:filesystem getattr;
	dontaudit $1 bsdpty_device_t:chr_file { getattr read write };
	type_transition $1 devpts_t:chr_file $2;
')

########################################
## <desc>
##	Read and write the console, all
##	ttys and all ptys.
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_use_all_terms',`
	gen_require(`
		attribute ttynode, ptynode;
		type console_device_t, devpts_t, tty_device_t;
		class dir r_dir_perms;
		class chr_file rw_file_perms;
	')

	dev_list_all_dev_nodes($1)
	allow $1 devpts_t:dir r_dir_perms;
	allow $1 { console_device_t tty_device_t ttynode ptynode }:chr_file rw_file_perms;
')

########################################
## <desc>
##	Write to the console.
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_write_console',`
	gen_require(`
		type console_device_t;
		class chr_file write;
	')

	dev_list_all_dev_nodes($1)
	allow $1 console_device_t:chr_file write;
')

########################################
## <desc>
##	Read from and write to the console.
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_use_console',`
	gen_require(`
		type console_device_t;
		class chr_file rw_file_perms;
	')

	dev_list_all_dev_nodes($1)
	allow $1 console_device_t:chr_file rw_file_perms;
')

########################################
## <desc>
##	Do not audit attemtps to read from
##	or write to the console.
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_dontaudit_use_console',`
	gen_require(`
		type console_device_t;
		class chr_file { read write };
	')

	dontaudit $1 console_device_t:chr_file { read write };
')

########################################
## <desc>
##	Set the attributes of the console
##	device node.
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_setattr_console',`
	gen_require(`
		type console_device_t;
		class chr_file setattr;
	')

	dev_list_all_dev_nodes($1)
	allow $1 console_device_t:chr_file setattr;
')

########################################
## <desc>
##	Read the /dev/pts directory to
##	list all ptys.
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_list_ptys',`
	gen_require(`
		type devpts_t;
		class dir r_dir_perms;
	')

	dev_list_all_dev_nodes($1)
	allow $1 devpts_t:dir r_dir_perms;
')

########################################
## <desc>
##	Do not audit attempts to read the
##	/dev/pts directory to.
## </desc>
## <param name="domain">
##	The type of the process to not audit.
## </param>
#
interface(`term_dontaudit_list_ptys',`
	gen_require(`
		type devpts_t;
		class dir { getattr search read };
	')

	dontaudit $1 devpts_t:dir { getattr search read };
')

########################################
## <desc>
##	Read and write the generic pty
##	type.  This is generally only used in
##	the targeted policy.
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_use_generic_pty',`
	gen_require(`
		type devpts_t;
		class chr_file { read write };
	')

	dev_list_all_dev_nodes($1)
	allow $1 devpts_t:chr_file { read write };
')

########################################
## <desc>
##	Dot not audit attempts to read and
##	write the generic pty type.  This is
##	generally only used in the targeted policy.
## </desc>
## <param name="domain">
##	The type of the process to not audit.
## </param>
#
interface(`term_dontaudit_use_generic_pty',`
	gen_require(`
		type devpts_t;
		class chr_file { read write };
	')

	dontaudit $1 devpts_t:chr_file { read write };
')

########################################
## <desc>
##	Read and write the controlling
##	terminal (/dev/tty).
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_use_controlling_term',`
	gen_require(`
		type devtty_t;
		class chr_file { getattr read write ioctl };
	')

	dev_list_all_dev_nodes($1)
	allow $1 devtty_t:chr_file { getattr read write ioctl };
')

########################################
## <desc>
##	Do not audit attempts to read and
##	write the pty multiplexor (/dev/ptmx).
## </desc>
## <param name="domain">
##	The type of the process to not audit.
## </param>
#
interface(`term_dontaudit_use_ptmx',`
	gen_require(`
		type ptmx_t;
		class chr_file { getattr read write };
	')

	dontaudit $1 ptmx_t:chr_file { getattr read write };
')

########################################
## <desc>
##	Get the attributes of all user
##	pty device nodes.
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_getattr_all_user_ptys',`
	gen_require(`
		attribute ptynode;
		class dir r_dir_perms;
		class chr_file getattr;
	')

	dev_list_all_dev_nodes($1)
	allow $1 devpts_t:dir r_dir_perms;
	allow $1 ptynode:chr_file getattr;
')

########################################
## <desc>
##	Do not audit attempts to get the
##	attributes of any user pty
##	device nodes.
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_dontaudit_getattr_all_user_ptys',`
	gen_require(`
		attribute ptynode;
		class chr_file getattr;
	')

	dev_list_all_dev_nodes($1)
	allow $1 devpts_t:dir r_dir_perms;
	dontaudit $1 ptynode:chr_file getattr;
')

########################################
## <summary>
##	Set the attributes of all user
##	pty device nodes.
## </summary>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_setattr_all_user_ptys',`
	gen_require(`
		attribute ptynode;
		class dir r_dir_perms;
		class chr_file setattr;
	')

	dev_list_all_dev_nodes($1)
	allow $1 devpts_t:dir r_dir_perms;
	allow $1 ptynode:chr_file setattr;
')

########################################
## <summary>
##	Relabel to all user ptys.
## </summary>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_relabelto_all_user_ptys',`
	gen_require(`
		attribute ptynode;
		class chr_file relabelto;
	')

	allow $1 ptynode:chr_file relabelto;
')

########################################
## <desc>
##	Read and write all user ptys.
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_use_all_user_ptys',`
	gen_require(`
		attribute ptynode;
		class dir r_dir_perms;
		class chr_file { getattr read write ioctl };
	')

	dev_list_all_dev_nodes($1)
	allow $1 devpts_t:dir r_dir_perms;
	allow $1 ptynode:chr_file { getattr read write ioctl };
')

########################################
## <desc>
##	Do not audit attempts to read any
##	user ptys.
## </desc>
## <param name="domain">
##	The type of the process to not audit.
## </param>
#
interface(`term_dontaudit_use_all_user_ptys',`
	gen_require(`
		attribute ptynode;
		class chr_file { read write };
	')

	dontaudit $1 ptynode:chr_file { read write };
')

########################################
## <desc>
##	Relabel from and to all user
##	user pty device nodes.
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_relabel_all_user_ptys',`
	gen_require(`
		attribute ptynode;
		type devpts_t;
		class chr_file { relabelfrom relabelto };
	')

	dev_list_all_dev_nodes($1)
	allow $1 devpts_t:dir search;
	allow $1 ptynode:chr_file { relabelfrom relabelto };
')

########################################
## <desc>
##	Get the attributes of all unallocated
##	tty device nodes.
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_getattr_unallocated_ttys',`
	gen_require(`
		type tty_device_t;
		class chr_file getattr;
	')

	dev_list_all_dev_nodes($1)
	allow $1 tty_device_t:chr_file getattr;
')

########################################
## <desc>
##	Do not audit attempts to get the attributes
##	of all unallocated tty device nodes.
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_dontaudit_getattr_unallocated_ttys',`
	gen_require(`
		type tty_device_t;
		class chr_file getattr;
	')

	dontaudit $1 tty_device_t:chr_file getattr;
')

########################################
## <desc>
##	Set the attributes of all unallocated
##	tty device nodes.
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_setattr_unallocated_ttys',`
	gen_require(`
		type tty_device_t;
		class chr_file setattr;
	')

	dev_list_all_dev_nodes($1)
	allow $1 tty_device_t:chr_file setattr;
')

########################################
## <desc>
##	Relabel from and to the unallocated
##	tty type.
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_relabel_unallocated_ttys',`
	gen_require(`
		type tty_device_t;
		class chr_file { relabelfrom relabelto };
	')

	dev_list_all_dev_nodes($1)
	allow $1 tty_device_t:chr_file { relabelfrom relabelto };
')

########################################
## <desc>
##	Relabel from all user tty types to
##	the unallocated tty type.
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_reset_tty_labels',`
	gen_require(`
		attribute ttynode;
		type tty_device_t;
		class chr_file { relabelfrom relabelto };
	')

	dev_list_all_dev_nodes($1)
	allow $1 ttynode:chr_file relabelfrom;
	allow $1 tty_device_t:chr_file relabelto;
')

########################################
## <desc>
##	Write to unallocated ttys.
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_write_unallocated_ttys',`
	gen_require(`
		type tty_device_t;
		class chr_file { getattr write };
	')

	dev_list_all_dev_nodes($1)
	allow $1 tty_device_t:chr_file { getattr write };
')

########################################
## <desc>
##	Read and write unallocated ttys.
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_use_unallocated_tty',`
	gen_require(`
		type tty_device_t;
		class chr_file { getattr read write ioctl };
	')

	dev_list_all_dev_nodes($1)
	allow $1 tty_device_t:chr_file { getattr read write ioctl };
')

########################################
## <desc>
##	Do not audit attempts to read or
##	write unallocated ttys.
## </desc>
## <param name="domain">
##	The type of the process to not audit.
## </param>
#
interface(`term_dontaudit_use_unallocated_tty',`
	gen_require(`
		type tty_device_t;
		class chr_file { read write };
	')

	dontaudit $1 tty_device_t:chr_file { read write };
')

########################################
## <desc>
##	Get the attributes of all user tty
##	device nodes.
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_getattr_all_user_ttys',`
	gen_require(`
		attribute ttynode;
		class chr_file getattr;
	')

	dev_list_all_dev_nodes($1)
	allow $1 ttynode:chr_file getattr;
')

########################################
## <desc>
##	Do not audit attempts to get the
##	attributes of any user tty
##	device nodes.
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_dontaudit_getattr_all_user_ttys',`
	gen_require(`
		attribute ttynode;
		class chr_file getattr;
	')

	dev_list_all_dev_nodes($1)
	dontaudit $1 ttynode:chr_file getattr;
')

########################################
## <desc>
##	Set the attributes of all user tty
##	device nodes.
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_setattr_all_user_ttys',`
	gen_require(`
		attribute ttynode;
		class chr_file setattr;
	')

	dev_list_all_dev_nodes($1)
	allow $1 ttynode:chr_file setattr;
')

########################################
## <desc>
##	Relabel from and to all user
##	user tty device nodes.
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_relabel_all_user_ttys',`
	gen_require(`
		attribute ttynode;
		class chr_file { relabelfrom relabelto };
	')

	dev_list_all_dev_nodes($1)
	allow $1 ttynode:chr_file { relabelfrom relabelto };
')

########################################
## <desc>
##	Write to all user ttys.
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_write_all_user_ttys',`
	gen_require(`
		attribute ttynode;
		class chr_file { getattr write };
	')

	dev_list_all_dev_nodes($1)
	allow $1 ttynode:chr_file { getattr write };
')

########################################
## <desc>
##	Read and write all user to all user ttys.
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_use_all_user_ttys',`
	gen_require(`
		attribute ttynode;
		class chr_file { getattr read write ioctl };
	')

	dev_list_all_dev_nodes($1)
	allow $1 ttynode:chr_file { getattr read write ioctl };
')

########################################
## <desc>
##	Do not audit attempts to read or write
##	any user ttys.
## </desc>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`term_dontaudit_use_all_user_ttys',`
	gen_require(`
		attribute ttynode;
		class chr_file { read write };
	')

	dontaudit $1 ttynode:chr_file { read write };
')