selinux-policy/mls/domains/user.te

#DESC User - Domains for ordinary users.
#
#################################

# Booleans for user domains.

# Allow applications to read untrusted content
# If this is disallowed, Internet content has
# to be manually relabeled for read access to be granted
bool read_untrusted_content false;

# Allow applications to write untrusted content
# If this is disallowed, no Internet content
# will be stored.
bool write_untrusted_content false;

# Allow users to read system messages.
bool user_dmesg false;

# Support NFS home directories
bool use_nfs_home_dirs false;

# Allow making anonymous memory executable, e.g. 
# for runtime-code generation or executable stack.
bool allow_execmem false;

# Allow making the stack executable via mprotect.
# Also requires allow_execmem.
bool allow_execstack false;

# Allow making a modified private file mapping executable (text relocation).
bool allow_execmod false;

# Support SAMBA home directories
bool use_samba_home_dirs false;

# Allow users to run TCP servers (bind to ports and accept connection from
# the same domain and outside users)  disabling this forces FTP passive mode
# and may change other protocols 
bool user_tcp_server false;

# Allow system to run with NIS
bool allow_ypbind false;

# Allow system to run with kerberos
bool allow_kerberos false;

# Allow users to rw usb devices
bool user_rw_usb false;

# Allow users to control network interfaces (also needs USERCTL=true)
bool user_net_control false;

# Allow regular users direct mouse access 
bool user_direct_mouse false;

# Allow user to r/w noextattrfile (FAT, CDROM, FLOPPY)
bool user_rw_noexattrfile false;

# Allow reading of default_t files.
bool read_default_t false;

# Allow staff_r users to search the sysadm home dir and read
# files (such as ~/.bashrc)
bool staff_read_sysadm_file false;


full_user_role(user)

ifdef(`user_canbe_sysadm', `
reach_sysadm(user)
role_tty_type_change(user, sysadm)
')

#  Do not add any rules referring to user_t to this file!  That will break
#  support for multiple user roles.

# a role for staff that allows seeing all domains and control over the user_t
# domain
full_user_role(staff)

priv_user(staff)
# if adding new user roles make sure you edit the in_user_role macro in
# macros/user_macros.te to match

# lots of user programs accidentally search /root, and also the admin often
# logs in as UID=0 domain=user_t...
dontaudit unpriv_userdomain { sysadm_home_dir_t staff_home_dir_t }:dir { getattr search };

#
# Allow the user roles to transition
# into each other.
role_tty_type_change(sysadm, user)
role_tty_type_change(staff, sysadm)
role_tty_type_change(sysadm, staff)
role_tty_type_change(sysadm, secadm)
role_tty_type_change(staff, secadm)

# "ps aux" and "ls -l /dev/pts" make too much noise without this
dontaudit unpriv_userdomain ptyfile:chr_file getattr;

# to allow w to display everyone...
bool user_ttyfile_stat false;

if (user_ttyfile_stat) {
allow userdomain ttyfile:chr_file getattr;
}