## <summary>Periodic execution of scheduled commands.</summary>
#######################################
## <summary>
## The common rules for a crontab domain.
## </summary>
## <param name="userdomain_prefix">
## <summary>
## The prefix of the user domain (e.g., user
## is the prefix for user_t).
## </summary>
## </param>
#
template(`cron_common_crontab_template',`
##############################
#
# Declarations
#
type $1_t;
application_domain($1_t, crontab_exec_t)
ubac_constrained($1_t)
type $1_tmp_t;
files_tmp_file($1_tmp_t)
##############################
#
# Local policy
#
# dac_override is to create the file in the directory under /tmp
allow $1_t self:capability { fowner setuid setgid chown dac_override };
allow $1_t self:process signal_perms;
allow $1_t $1_tmp_t:file manage_file_perms;
files_tmp_filetrans($1_t,$1_tmp_t,file)
# create files in /var/spool/cron
# cjp: change this to a role transition
manage_files_pattern($1_t, cron_spool_t, user_cron_spool_t)
filetrans_pattern($1_t, cron_spool_t, user_cron_spool_t, file)
files_search_spool($1_t)
# crontab signals crond by updating the mtime on the spooldir
allow $1_t cron_spool_t:dir setattr;
kernel_read_system_state($1_t)
# for the checks used by crontab -u
selinux_dontaudit_search_fs($1_t)
fs_getattr_xattr_fs($1_t)
domain_use_interactive_fds($1_t)
files_read_etc_files($1_t)
files_dontaudit_search_pids($1_t)
logging_send_syslog_msg($1_t)
miscfiles_read_localization($1_t)
seutil_read_config($1_t)
userdom_manage_user_tmp_dirs($1_t)
userdom_manage_user_tmp_files($1_t)
# Access terminals.
userdom_use_user_terminals($1_t)
# Read user crontabs
userdom_read_user_home_content_files($1_t)
tunable_policy(`fcron_crond',`
# fcron wants an instant update of a crontab change for the administrator
# also crontab does a security check for crontab -u
dontaudit $1_t crond_t:process signal;
')
optional_policy(`
nscd_socket_use($1_t)
')
')
########################################
## <summary>
## Role access for cron
## </summary>
## <param name="role">
## <summary>
## Role allowed access
## </summary>
## </param>
## <param name="domain">
## <summary>
## User domain for the role
## </summary>
## </param>
#
interface(`cron_role',`
gen_require(`
type cronjob_t, crontab_t, crontab_exec_t;
')
role $1 types { cronjob_t crontab_t };
# cronjob shows up in user ps
ps_process_pattern($2, cronjob_t)
# Transition from the user domain to the derived domain.
domtrans_pattern($2, crontab_exec_t, crontab_t)
# crontab shows up in user ps
ps_process_pattern($2, crontab_t)
allow $2 crontab_t:process signal;
# Run helper programs as the user domain
#corecmd_bin_domtrans(crontab_t, $2)
#corecmd_shell_domtrans(crontab_t, $2)
corecmd_exec_bin(crontab_t)
corecmd_exec_shell(crontab_t)
optional_policy(`
gen_require(`
class dbus send_msg;
')
dbus_stub(cronjob_t)
allow cronjob_t $2:dbus send_msg;
')
')
########################################
## <summary>
## Role access for unconfined cronjobs
## </summary>
## <param name="role">
## <summary>
## Role allowed access
## </summary>
## </param>
## <param name="domain">
## <summary>
## User domain for the role
## </summary>
## </param>
#
interface(`cron_unconfined_role',`
gen_require(`
type unconfined_cronjob_t, crontab_t, crontab_tmp_t, crontab_exec_t;
')
role $1 types { unconfined_cronjob_t crontab_t };
# cronjob shows up in user ps
ps_process_pattern($2, unconfined_cronjob_t)
# Transition from the user domain to the derived domain.
domtrans_pattern($2, crontab_exec_t, crontab_t)
# crontab shows up in user ps
ps_process_pattern($2, crontab_t)
allow $2 crontab_t:process signal;
# Run helper programs as the user domain
#corecmd_bin_domtrans(crontab_t, $2)
#corecmd_shell_domtrans(crontab_t, $2)
corecmd_exec_bin(crontab_t)
corecmd_exec_shell(crontab_t)
optional_policy(`
gen_require(`
class dbus send_msg;
')
dbus_stub(unconfined_cronjob_t)
allow unconfined_cronjob_t $2:dbus send_msg;
')
')
########################################
## <summary>
## Role access for cron
## </summary>
## <param name="role">
## <summary>
## Role allowed access
## </summary>
## </param>
## <param name="domain">
## <summary>
## User domain for the role
## </summary>
## </param>
#
interface(`cron_admin_role',`
gen_require(`
type cronjob_t, crontab_exec_t, admin_crontab_t, admin_crontab_tmp_t;
class passwd crontab;
')
role $1 types { cronjob_t admin_crontab_t admin_crontab_tmp_t };
# cronjob shows up in user ps
ps_process_pattern($2, cronjob_t)
# Manipulate other users crontab.
allow $2 self:passwd crontab;
# Transition from the user domain to the derived domain.
domtrans_pattern($2, crontab_exec_t, admin_crontab_t)
# crontab shows up in user ps
ps_process_pattern($2, admin_crontab_t)
allow $2 admin_crontab_t:process signal;
# Run helper programs as the user domain
#corecmd_bin_domtrans(admin_crontab_t, $2)
#corecmd_shell_domtrans(admin_crontab_t, $2)
corecmd_exec_bin(admin_crontab_t)
corecmd_exec_shell(admin_crontab_t)
optional_policy(`
gen_require(`
class dbus send_msg;
')
dbus_stub(admin_cronjob_t)
allow cronjob_t $2:dbus send_msg;
')
')
########################################
## <summary>
## Make the specified program domain accessable
## from the system cron jobs.
## </summary>
## <param name="domain">
## <summary>
## The type of the process to transition to.
## </summary>
## </param>
## <param name="entrypoint">
## <summary>
## The type of the file used as an entrypoint to this domain.
## </summary>
## </param>
#
interface(`cron_system_entry',`
gen_require(`
type crond_t, system_cronjob_t;
')
domain_auto_trans(system_cronjob_t, $2, $1)
# cjp: perhaps these four rules from the old
# domain_auto_trans are not needed?
allow $1 system_cronjob_t:fd use;
allow $1 system_cronjob_t:fifo_file rw_file_perms;
allow $1 system_cronjob_t:process sigchld;
allow $1 crond_t:fifo_file rw_file_perms;
allow $1 crond_t:fd use;
allow $1 crond_t:process sigchld;
role system_r types $1;
')
########################################
## <summary>
## Inherit and use a file descriptor
## from the cron daemon.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`cron_use_fds',`
gen_require(`
type crond_t;
')
allow $1 crond_t:fd use;
')
########################################
## <summary>
## Send a SIGCHLD signal to the cron daemon.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`cron_sigchld',`
gen_require(`
type crond_t;
')
allow $1 crond_t:process sigchld;
')
########################################
## <summary>
## Read a cron daemon unnamed pipe.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`cron_read_pipes',`
gen_require(`
type crond_t;
')
allow $1 crond_t:fifo_file read_fifo_file_perms;
')
########################################
## <summary>
## Do not audit attempts to write cron daemon unnamed pipes.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`cron_dontaudit_write_pipes',`
gen_require(`
type crond_t;
')
dontaudit $1 crond_t:fifo_file write;
')
########################################
## <summary>
## Read and write a cron daemon unnamed pipe.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`cron_rw_pipes',`
gen_require(`
type crond_t;
')
allow $1 crond_t:fifo_file { getattr read write };
')
########################################
## <summary>
## Read, and write cron daemon TCP sockets.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`cron_rw_tcp_sockets',`
gen_require(`
type crond_t;
')
allow $1 crond_t:tcp_socket { read write };
')
########################################
## <summary>
## Search the directory containing user cron tables.
## </summary>
## <param name="domain">
## <summary>
## The type of the process to performing this action.
## </summary>
## </param>
#
interface(`cron_search_spool',`
gen_require(`
type cron_spool_t;
')
files_search_spool($1)
allow $1 cron_spool_t:dir search_dir_perms;
')
########################################
## <summary>
## Execute anacron in the cron system domain.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`cron_anacron_domtrans_system_job',`
gen_require(`
type system_cronjob_t, anacron_exec_t;
')
domtrans_pattern($1,anacron_exec_t,system_cronjob_t)
')
########################################
## <summary>
## Inherit and use a file descriptor
## from system cron jobs.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`cron_use_system_job_fds',`
gen_require(`
type system_cronjob_t;
')
allow $1 system_cronjob_t:fd use;
')
########################################
## <summary>
## Write a system cron job unnamed pipe.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`cron_write_system_job_pipes',`
gen_require(`
type system_cronjob_t;
')
allow $1 system_cronjob_t:file write;
')
########################################
## <summary>
## Read and write a system cron job unnamed pipe.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`cron_rw_system_job_pipes',`
gen_require(`
type system_cronjob_t;
')
allow $1 system_cronjob_t:fifo_file rw_fifo_file_perms;
')
########################################
## <summary>
## Read temporary files from the system cron jobs.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`cron_read_system_job_tmp_files',`
gen_require(`
type system_cronjob_tmp_t;
')
files_search_tmp($1)
allow $1 system_cronjob_tmp_t:file read_file_perms;
')
########################################
## <summary>
## Do not audit attempts to append temporary
## files from the system cron jobs.
## </summary>
## <param name="domain">
## <summary>
## Domain to not audit.
## </summary>
## </param>
#
interface(`cron_dontaudit_append_system_job_tmp_files',`
gen_require(`
type system_cronjob_tmp_t;
')
dontaudit $1 system_cronjob_tmp_t:file append;
')