## <summary>Core policy for domains.</summary>
## <required val="true">
## Contains the concept of a domain.
## </required>
########################################
## <summary>
## Make the specified type usable as a basic domain.
## </summary>
## <desc>
## <p>
## Make the specified type usable as a basic domain.
## </p>
## <p>
## This is primarily used for kernel threads;
## generally the domain_type() interface is
## more appropriate for userland processes.
## </p>
## </desc>
## <param name="type">
## Type to be used as a basic domain type.
## </param>
#
interface(`domain_base_type',`
gen_require(`
attribute domain;
class dir r_dir_perms;
class lnk_file r_file_perms;
class file rw_file_perms;
class process { fork sigchld };
')
# mark as a domain
typeattribute $1 domain;
# allow the domain to read its /proc/pid entries
allow $1 self:dir r_dir_perms;
allow $1 self:lnk_file r_file_perms;
allow $1 self:file rw_file_perms;
# allow $1 to create child processes in this domain
allow $1 self:process { fork sigchld };
')
########################################
## <summary>
## Make the specified type usable as a domain.
## </summary>
## <param name="type">
## Type to be used as a domain type.
## </param>
#
interface(`domain_type',`
# start with basic domain
domain_base_type($1)
# Use trusted objects in /dev
dev_rw_null_dev($1)
dev_rw_zero_dev($1)
term_use_controlling_term($1)
# read the root directory
files_list_root($1)
# send init a sigchld and signull
init_sigchld($1)
init_signull($1)
ifdef(`targeted_policy',`
unconfined_use_fd($1)
unconfined_sigchld($1)
')
# this seems highly questionable:
optional_policy(`rpm.te',`
rpm_use_fd($1)
rpm_read_pipe($1)
')
')
########################################
## <summary>
## Make the specified type usable as
## an entry point for the domain.
## </summary>
## <param name="domain">
## Domain to be entered.
## </param>
## <param name="type">
## Type of program used for entering
## the domain.
## </param>
#
interface(`domain_entry_file',`
gen_require(`
attribute entry_type;
class file entrypoint;
')
files_type($2)
allow $1 $2:file entrypoint;
allow $1 $2:file rx_file_perms;
typeattribute $2 entry_type;
')
########################################
#
# domain_wide_inherit_fd(domain)
#
interface(`domain_wide_inherit_fd',`
gen_require(`
attribute privfd;
')
typeattribute $1 privfd;
')
########################################
#
# domain_dyntrans_type(domain)
#
interface(`domain_dyntrans_type',`
gen_require(`
attribute set_curr_context;
')
typeattribute $1 set_curr_context;
')
########################################
## <summary>
## Makes caller an exception to the constraint preventing
## changing of user identity.
## </summary>
## <param name="domain">
## The process type to make an exception to the constraint.
## </param>
#
interface(`domain_subj_id_change_exempt',`
gen_require(`
attribute can_change_process_identity;
')
typeattribute $1 can_change_process_identity;
')
########################################
## <summary>
## Makes caller an exception to the constraint preventing
## changing of role.
## </summary>
## <param name="domain">
## The process type to make an exception to the constraint.
## </param>
#
interface(`domain_role_change_exempt',`
gen_require(`
attribute can_change_process_role;
')
typeattribute $1 can_change_process_role;
')
########################################
## <summary>
## Makes caller an exception to the constraint preventing
## changing the user identity in object contexts.
## </summary>
## <param name="domain">
## The process type to make an exception to the constraint.
## </param>
#
interface(`domain_obj_id_change_exempt',`
gen_require(`
attribute can_change_object_identity;
')
typeattribute $1 can_change_object_identity;
')
########################################
## <summary>
## Make the specified domain the target of
## the user domain exception of the
## SELinux role and identity change
## constraints.
## </summary>
## <desc>
## <p>
## Make the specified domain the target of
## the user domain exception of the
## SELinux role and identity change
## constraints.
## </p>
## <p>
## This interface is needed to decouple
## the user domains from the base module.
## It should not be used other than on
## user domains.
## </p>
## </desc>
## <param name="domain">
## Domain target for user exemption.
## </param>
#
interface(`domain_user_exemption_target',`
gen_require(`
attribute process_user_target;
')
typeattribute $1 process_user_target;
')
########################################
## <summary>
## Make the specified domain the source of
## the cron domain exception of the
## SELinux role and identity change
## constraints.
## </summary>
## <desc>
## <p>
## Make the specified domain the source of
## the cron domain exception of the
## SELinux role and identity change
## constraints.
## </p>
## <p>
## This interface is needed to decouple
## the cron domains from the base module.
## It should not be used other than on
## cron domains.
## </p>
## </desc>
## <param name="domain">
## Domain target for user exemption.
## </param>
#
interface(`domain_cron_exemption_source',`
gen_require(`
attribute cron_source_domain;
')
typeattribute $1 cron_source_domain;
')
########################################
## <summary>
## Make the specified domain the target of
## the cron domain exception of the
## SELinux role and identity change
## constraints.
## </summary>
## <desc>
## <p>
## Make the specified domain the target of
## the cron domain exception of the
## SELinux role and identity change
## constraints.
## </p>
## <p>
## This interface is needed to decouple
## the cron domains from the base module.
## It should not be used other than on
## user cron jobs.
## </p>
## </desc>
## <param name="domain">
## Domain target for user exemption.
## </param>
#
interface(`domain_cron_exemption_target',`
gen_require(`
attribute cron_job_domain;
')
typeattribute $1 cron_job_domain;
')
########################################
#
# domain_use_wide_inherit_fd(domain)
#
interface(`domain_use_wide_inherit_fd',`
gen_require(`
attribute privfd;
class fd use;
')
allow $1 privfd:fd use;
')
########################################
#
# domain_dontaudit_use_wide_inherit_fd(domain)
#
interface(`domain_dontaudit_use_wide_inherit_fd',`
gen_require(`
attribute privfd;
class fd use;
')
dontaudit $1 privfd:fd use;
')
########################################
## <summary>
## Send a SIGCHLD signal to domains whose file
## discriptors are widely inheritable.
## </summary>
## <param name="domain">
## Domain allowed access.
## </param>
#
# cjp: this was added because of newrole
interface(`domain_sigchld_wide_inherit_fd',`
gen_require(`
attribute privfd;
class process signal;
')
dontaudit $1 privfd:fd use;
')
########################################
#
# domain_setpriority_all_domains(domain)
#
interface(`domain_setpriority_all_domains',`
gen_require(`
attribute domain;
class process setsched;
')
allow $1 domain:process setsched;
')
########################################
## <summary>
## Send general signals to all domains.
## </summary>
## <param name="domain">
## The type of the process performing this action.
## </param>
#
interface(`domain_signal_all_domains',`
gen_require(`
attribute domain;
class process signal;
')
allow $1 domain:process signal;
')
########################################
## <summary>
## Send a null signal to all domains.
## </summary>
## <param name="domain">
## The type of the process performing this action.
## </param>
#
interface(`domain_signull_all_domains',`
gen_require(`
attribute domain;
class process signull;
')
allow $1 domain:process signull;
')
########################################
## <summary>
## Send a stop signal to all domains.
## </summary>
## <param name="domain">
## The type of the process performing this action.
## </param>
#
interface(`domain_sigstop_all_domains',`
gen_require(`
attribute domain;
class process sigstop;
')
allow $1 domain:process sigstop;
')
########################################
## <summary>
## Send a child terminated signal to all domains.
## </summary>
## <param name="domain">
## The type of the process performing this action.
## </param>
#
interface(`domain_sigchld_all_domains',`
gen_require(`
attribute domain;
class process sigchld;
')
allow $1 domain:process sigchld;
')
########################################
## <summary>
## Send a kill signal to all domains.
## </summary>
## <param name="domain">
## The type of the process performing this action.
## </param>
#
interface(`domain_kill_all_domains',`
gen_require(`
attribute domain;
class process sigkill;
class capability kill;
')
allow $1 domain:process sigkill;
allow $1 self:capability kill;
')
########################################
## <summary>
## Read the process state (/proc/pid) of all domains.
## </summary>
## <param name="domain">
## The type of the process performing this action.
## </param>
#
interface(`domain_read_all_domains_state',`
gen_require(`
attribute domain;
class dir r_dir_perms;
class lnk_file r_file_perms;
class file r_file_perms;
class process { getattr ptrace };
')
allow $1 domain:dir r_dir_perms;
allow $1 domain:lnk_file r_file_perms;
allow $1 domain:file r_file_perms;
allow $1 domain:process getattr;
# We need to suppress this denial because procps tries to access
# /proc/pid/environ and this now triggers a ptrace check in recent kernels
# (2.4 and 2.6). Might want to change procps to not do this, or only if
# running in a privileged domain.
dontaudit $1 domain:process ptrace;
')
########################################
## <summary>
## Do not audit attempts to read the process
## state (/proc/pid) of all domains.
## </summary>
## <param name="domain">
## The type of the process performing this action.
## </param>
#
interface(`domain_dontaudit_read_all_domains_state',`
gen_require(`
attribute domain;
class dir r_dir_perms;
class lnk_file r_file_perms;
class file r_file_perms;
class process { getattr ptrace };
')
dontaudit $1 domain:dir r_dir_perms;
dontaudit $1 domain:lnk_file r_file_perms;
dontaudit $1 domain:file r_file_perms;
dontaudit $1 domain:process getattr;
# We need to suppress this denial because procps tries to access
# /proc/pid/environ and this now triggers a ptrace check in recent kernels
# (2.4 and 2.6). Might want to change procps to not do this, or only if
# running in a privileged domain.
dontaudit $1 domain:process ptrace;
')
########################################
## <summary>
## Do not audit attempts to read the process state
## directories of all domains.
## </summary>
## <param name="domain">
## The type of the process performing this action.
## </param>
#
interface(`domain_dontaudit_list_all_domains_proc',`
gen_require(`
attribute domain;
class dir r_dir_perms;
')
dontaudit $1 domain:dir r_dir_perms;
')
########################################
## <summary>
## Get the session ID of all domains.
## </summary>
## <param name="domain">
## The type of the process performing this action.
## </param>
#
interface(`domain_getsession_all_domains',`
gen_require(`
attribute domain;
class process getsession;
')
allow $1 domain:process getsession;
')
########################################
## <summary>
## Do not audit attempts to get the
## session ID of all domains.
## </summary>
## <param name="domain">
## The type of the process performing this action.
## </param>
#
interface(`domain_dontaudit_getsession_all_domains',`
gen_require(`
attribute domain;
class process getsession;
')
dontaudit $1 domain:process getsession;
')
########################################
## <summary>
## Get the attributes of all domains
## sockets, for all socket types.
## </summary>
## <desc>
## <p>
## Get the attributes of all domains
## sockets, for all socket types.
## </p>
## <p>
## This is commonly used for domains
## that can use lsof on all domains.
## </p>
## </desc>
## <param name="domain">
## Domain allowed access.
## </param>
#
interface(`domain_getattr_all_sockets',`
gen_require(`
gen_require_set(getattr,socket_class_set)
')
allow $1 domain:socket_class_set getattr;
')
########################################
## <summary>
## Do not audit attempts to get the attributes
## of all domains sockets, for all socket types.
## </summary>
## <desc>
## <p>
## Do not audit attempts to get the attributes
## of all domains sockets, for all socket types.
## </p>
## <p>
## This interface was added for PCMCIA cardmgr
## and is probably excessive.
## </p>
## </desc>
## <param name="domain">
## Domain to not audit.
## </param>
#
interface(`domain_dontaudit_getattr_all_sockets',`
gen_require(`
gen_require_set(getattr,socket_class_set)
')
dontaudit $1 domain:socket_class_set getattr;
')
########################################
## <summary>
## Do not audit attempts to get the attributes
## of all domains TCP sockets.
## </summary>
## <param name="domain">
## The type of the process performing this action.
## </param>
#
interface(`domain_dontaudit_getattr_all_tcp_sockets',`
gen_require(`
attribute domain;
class tcp_socket getattr;
')
dontaudit $1 domain:tcp_socket getattr;
')
########################################
## <summary>
## Do not audit attempts to get the attributes
## of all domains UDP sockets.
## </summary>
## <param name="domain">
## The type of the process performing this action.
## </param>
#
interface(`domain_dontaudit_getattr_all_udp_sockets',`
gen_require(`
attribute domain;
class udp_socket getattr;
')
dontaudit $1 domain:udp_socket getattr;
')
########################################
## <summary>
## Do not audit attempts to read or write
## all domains UDP sockets.
## </summary>
## <param name="domain">
## The type of the process performing this action.
## </param>
#
interface(`domain_dontaudit_rw_all_udp_sockets',`
gen_require(`
attribute domain;
class udp_socket { read write };
')
dontaudit $1 domain:udp_socket { read write };
')
########################################
## <summary>
## Do not audit attempts to read or write
## all domains key sockets.
## </summary>
## <param name="domain">
## The type of the process performing this action.
## </param>
#
interface(`domain_dontaudit_rw_all_key_sockets',`
gen_require(`
attribute domain;
class key_socket { read write };
')
dontaudit $1 domain:key_socket { read write };
')
########################################
## <summary>
## Do not audit attempts to get the attributes
## of all domains unix datagram sockets.
## </summary>
## <param name="domain">
## The type of the process performing this action.
## </param>
#
interface(`domain_dontaudit_getattr_all_unix_dgram_sockets',`
gen_require(`
attribute domain;
class unix_dgram_socket getattr;
')
dontaudit $1 domain:unix_dgram_socket getattr;
')
########################################
## <summary>
## Do not audit attempts to get the attributes
## of all domains unnamed pipes.
## </summary>
## <param name="domain">
## The type of the process performing this action.
## </param>
#
interface(`domain_dontaudit_getattr_all_unnamed_pipes',`
gen_require(`
attribute domain;
class fifo_file getattr;
')
dontaudit $1 domain:fifo_file getattr;
')
########################################
## <summary>
## Get the attributes of entry point
## files for all domains.
## </summary>
## <param name="domain">
## Domain allowed access.
## </param>
#
interface(`domain_getattr_all_entry_files',`
gen_require(`
attribute entry_type;
class file getattr;
class lnk_file r_file_perms;
')
allow $1 entry_type:lnk_file getattr;
allow $1 entry_type:file r_file_perms;
')
########################################
#
# domain_read_all_entry_files(domain)
#
interface(`domain_read_all_entry_files',`
gen_require(`
attribute entry_type;
class file r_file_perms;
class lnk_file r_file_perms;
')
allow $1 entry_type:lnk_file r_file_perms;
allow $1 entry_type:file r_file_perms;
')
########################################
#
# domain_exec_all_entry_files(domain)
#
interface(`domain_exec_all_entry_files',`
gen_require(`
attribute entry_type;
')
can_exec($1,entry_type)
')
########################################
## <summary>
## Unconfined access to domains.
## </summary>
## <param name="domain">
## The type of the process performing this action.
## </param>
#
interface(`domain_unconfined',`
gen_require(`
attribute domain, set_curr_context;
attribute can_change_process_identity;
attribute can_change_process_role;
attribute can_change_object_identity;
class fd use;
class fifo_file rw_file_perms;
class process { transition dyntransition execmem };
class dir r_dir_perms;
class file r_file_perms;
class lnk_file r_file_perms;
')
# pass all constraints
typeattribute $1 can_change_process_identity;
typeattribute $1 can_change_process_role;
typeattribute $1 can_change_object_identity;
typeattribute $1 set_curr_context;
# Use/sendto/connectto sockets created by any domain.
allow $1 domain:{ socket_class_set socket key_socket } *;
# Use descriptors and pipes created by any domain.
allow $1 domain:fd use;
allow $1 domain:fifo_file rw_file_perms;
# Act upon any other process.
allow $1 domain:process ~{ transition dyntransition execmem };
# Create/access any System V IPC objects.
allow $1 domain:{ sem msgq shm } *;
allow $1 domain:msg { send receive };
# For /proc/pid
allow $1 domain:dir r_dir_perms;
allow $1 domain:file r_file_perms;
allow $1 domain:lnk_file r_file_perms;
')
#
# These next macros are not interfaces, but actually are
# support macros. Due to the domain_ prefix, they
# are placed in this module, to try to prevent confusion.
#
########################################
#
# domain_trans(source_domain,entrypoint_file,target_domain)
#
template(`domain_trans',`
gen_require(`
class file rx_file_perms;
class process { transition noatsecure siginh rlimitinh };
')
allow $1 $2:file rx_file_perms;
allow $1 $3:process transition;
dontaudit $1 $3:process { noatsecure siginh rlimitinh };
')
########################################
#
# domain_auto_trans(source_domain,entrypoint_file,target_domain)
#
template(`domain_auto_trans',`
domain_trans($1,$2,$3)
type_transition $1 $2:process $3;
')