policy_module(rssh, 2.2.1)

########################################
#
# Declarations
#

attribute_role rssh_roles;
roleattribute system_r rssh_roles;

type rssh_t;
type rssh_exec_t;
typealias rssh_t alias { user_rssh_t staff_rssh_t sysadm_rssh_t };
typealias rssh_t alias { auditadm_rssh_t secadm_rssh_t };
userdom_user_application_domain(rssh_t, rssh_exec_t)
domain_user_exemption_target(rssh_t)
domain_interactive_fd(rssh_t)
role rssh_roles types rssh_t;

type rssh_chroot_helper_t;
type rssh_chroot_helper_exec_t;
init_system_domain(rssh_chroot_helper_t, rssh_chroot_helper_exec_t)

type rssh_devpts_t;
typealias rssh_devpts_t alias { user_rssh_devpts_t staff_rssh_devpts_t sysadm_rssh_devpts_t };
typealias rssh_devpts_t alias { auditadm_rssh_devpts_t secadm_rssh_devpts_t };
term_user_pty(rssh_t, rssh_devpts_t)
ubac_constrained(rssh_devpts_t)

type rssh_ro_t; # customizable
typealias rssh_ro_t alias { user_rssh_ro_t staff_rssh_ro_t sysadm_rssh_ro_t };
typealias rssh_ro_t alias { auditadm_rssh_ro_t secadm_rssh_ro_t };
userdom_user_home_content(rssh_ro_t)

type rssh_rw_t; # customizable
typealias rssh_rw_t alias { user_rssh_rw_t staff_rssh_rw_t sysadm_rssh_rw_t };
typealias rssh_rw_t alias { auditadm_rssh_rw_t secadm_rssh_rw_t };
userdom_user_home_content(rssh_rw_t)

##############################
#
# Local policy
#

allow rssh_t self:process ~{ ptrace setcurrent setexec setfscreate setrlimit execmem execstack execheap };
allow rssh_t self:fd use;
allow rssh_t self:fifo_file rw_fifo_file_perms;
allow rssh_t self:unix_dgram_socket sendto;
allow rssh_t self:unix_stream_socket { accept connectto listen };

allow rssh_t rssh_devpts_t:chr_file { rw_chr_file_perms setattr_chr_file_perms };
term_create_pty(rssh_t, rssh_devpts_t)

allow rssh_t rssh_ro_t:dir list_dir_perms;
read_files_pattern(rssh_t, rssh_ro_t, rssh_ro_t)

manage_dirs_pattern(rssh_t, rssh_rw_t, rssh_rw_t)
manage_files_pattern(rssh_t, rssh_rw_t, rssh_rw_t)

kernel_read_system_state(rssh_t)
kernel_read_kernel_sysctls(rssh_t)

files_read_etc_runtime_files(rssh_t)
files_list_home(rssh_t)
files_list_var(rssh_t)

fs_search_auto_mountpoints(rssh_t)

logging_send_syslog_msg(rssh_t)

rssh_domtrans_chroot_helper(rssh_t)

ssh_rw_tcp_sockets(rssh_t)
ssh_rw_stream_sockets(rssh_t)

optional_policy(`
	nis_use_ypbind(rssh_t)
')

########################################
#
# Chroot helper local policy
#

allow rssh_chroot_helper_t self:capability { sys_chroot setuid };
allow rssh_chroot_helper_t self:fifo_file rw_fifo_file_perms;
allow rssh_chroot_helper_t self:unix_stream_socket { accept listen };

domain_use_interactive_fds(rssh_chroot_helper_t)

auth_use_nsswitch(rssh_chroot_helper_t)

logging_send_syslog_msg(rssh_chroot_helper_t)