add crontab

refpolicy/policy/modules/services/cron.if

@@ -16,6 +16,16 @@ domain_make_domain($1_crond_t);
 corecommands_make_shell_entrypoint($1_crond_t)
 role $1_r types $1_crond_t;
 
+type $1_crontab_t;
+domain_make_domain($1_crontab_t)
+domain_make_entrypoint_file($1_crontab_t,crontab_exec_t)
+role $1_r types $1_crontab_t;
+
+##############################
+#
+# $1_crond_t local policy
+#
+
 allow $1_crond_t self:capability dac_override;
 allow $1_crond_t self:process { sigkill sigstop signull signal setsched };
 allow $1_crond_t self:fifo_file { read getattr write append };
@@ -111,5 +121,89 @@ dontaudit $1_crond_t boot_t:dir search;
 dontaudit $1_crond_t domain:dir { getattr search };
 # for nscd
 dontaudit $1_crond_t var_run_t:dir search;
+
+') dnl endif TODO
+
+##############################
+#
+# $1_crontab_t local policy
+#
+
+# for ^Z
+allow $1_t $1_crontab_t:process signal;
+
+# Allow crond to read those crontabs in cron spool.
+allow crond_t $1_cron_spool_t:file { getattr read };
+
+# dac_override is to create the file in the directory under /tmp
+allow $1_crontab_t self:capability { setuid setgid chown dac_override };
+allow $1_crontab_t self:process { sigkill sigstop signull signal };
+
+# crontab signals crond by updating the mtime on the spooldir
+allow $1_crontab_t cron_spool_t:dir setattr;
+
+allow $1_crontab_t crond_log_t:file { getattr read append };
+
+filesystem_get_persistent_filesystem_attributes($1_crontab_t)
+
+domain_use_widely_inheritable_file_descriptors($1_crontab_t)
+
+files_read_general_system_config($1_crontab_t)
+
+libraries_use_dynamic_loader($1_crontab_t)
+libraries_read_shared_libraries($1_crontab_t)
+
+logging_send_system_log_message($1_crontab_t)
+
+miscfiles_read_localization($1_crontab_t)
+
+ifdef(`TODO',`
+
+# Transition from the user domain to the derived domain.
+domain_auto_trans($1_t, crontab_exec_t, $1_crontab_t)
+
+can_ps($1_t, $1_crontab_t)
+
+dontaudit $1_crontab_t proc_t:dir search;
+dontaudit $1_crontab_t selinux_config_t:dir search;
+# for the checks used by crontab -u
+dontaudit $1_crontab_t security_t:dir search;
+
+# Type for temporary files.
+file_type_auto_trans($1_crontab_t, tmp_t, $1_tmp_t, { dir file })
+
+# Use the type when creating files in /var/spool/cron.
+allow sysadm_crontab_t $1_cron_spool_t:file { getattr read };
+allow $1_crontab_t { var_t var_spool_t }:dir { getattr search };
+file_type_auto_trans($1_crontab_t, cron_spool_t, $1_cron_spool_t, file)
+
+ifdef(`fcron.te', `
+# fcron wants an instant update of a crontab change for the administrator
+# also crontab does a security check for crontab -u
+ifelse(`$1', `sysadm', `
+allow $1_crontab_t self:process setfscreate;
+kernel_get_selinuxfs_mount_point($1_crontab_t)
+', `
+dontaudit $1_crontab_t crond_t:process signal;
+')dnl end ifelse
+')dnl end ifdef fcron
+
+# Run helper programs as $1_t
+allow $1_crontab_t { bin_t sbin_t }:dir search;
+allow $1_crontab_t bin_t:lnk_file read;
+domain_auto_trans($1_crontab_t, { bin_t sbin_t shell_exec_t }, $1_t)
+
+# Read user crontabs 
+allow $1_crontab_t { $1_home_t $1_home_dir_t }:dir r_dir_perms;  
+allow $1_crontab_t $1_home_t:file r_file_perms;  
+dontaudit $1_crontab_t $1_home_dir_t:dir write;
+
+# Access terminals.
+access_terminal($1_crontab_t, $1);
+
+# Inherit and use descriptors from gnome-pty-helper.
+ifdef(`gnome-pty-helper.te', `allow $1_crontab_t $1_gph_t:fd use;')
+
+dontaudit $1_crontab_t var_run_t:dir search;
 ') dnl endif TODO
 ')