119  * label_compound_match - find perms for full compound label
121  * @label: label to check access permissions for
130  * For the label A//&B//&C this does the perm match for A//&B//&C
135 				struct aa_label *label, bool stack,  in label_compound_match()  argument
144 	label_for_each(i, label, tp) {  in label_compound_match()
158 	label_for_each_cont(i, label, tp) {  in label_compound_match()
179  * label_components_match - find perms for all subcomponents of a label
181  * @label: label to check access permissions for
190  * For the label A//&B//&C this does the perm match for each of A and B and C
195 				  struct aa_label *label, bool stack,  in label_components_match()  argument
206 	label_for_each(i, label, tp) {  in label_components_match()
222 	label_for_each_cont(i, label, tp) {  in label_components_match()
244  * label_match - do a multi-component label match
246  * @label: label to match (NOT NULL)
255 static int label_match(struct aa_profile *profile, struct aa_label *label,  in label_match()  argument
262 	error = label_compound_match(profile, label, stack, state, subns,  in label_match()
268 	return label_components_match(profile, label, stack, state, subns,  in label_match()
277  * @target: label to transition to (NOT NULL)
285  * currently only matches full label A//&B//&C or individual components A, B, C
386  * Returns: label or NULL if no match found
402 		if (profile->label.flags & FLAG_NULL &&  in find_attach()
403 		    &profile->label == ns_unconfined(profile->ns))  in find_attach()
495 	return &candidate->label;  in find_attach()
507  * @name: returns: name tested to find label (NOT NULL)
509  * Returns: refcounted label, or NULL on failure (MAYBE NULL)
514 	struct aa_label *label = NULL;  in x_table_lookup()  local
522 	 *       index into the resultant label  in x_table_lookup()
524 	for (*name = profile->file.trans.table[index]; !label && *name;  in x_table_lookup()
531 				label = &new_profile->label;  in x_table_lookup()
534 		label = aa_label_parse(&profile->label, *name, GFP_KERNEL,  in x_table_lookup()
536 		if (IS_ERR(label))  in x_table_lookup()
537 			label = NULL;  in x_table_lookup()
542 	return label;  in x_table_lookup()
546  * x_to_label - get target label for a given xindex
553  * find label for a transition index
555  * Returns: refcounted label or NULL if not found available
603 			new = aa_get_newest_label(&profile->label);  in x_to_label()
644 		    (profile->label.flags & FLAG_IX_ON_NAME_ERROR)) {  in profile_transition()
647 			new = aa_get_newest_label(&profile->label);  in profile_transition()
657 			AA_DEBUG("unconfined attached to new label");  in profile_transition()
661 		return aa_get_newest_label(&profile->label);  in profile_transition()
670 		if (new && new->proxy == profile->label.proxy && info) {  in profile_transition()
690 			new = &new_profile->label;  in profile_transition()
751 		    (profile->label.flags & FLAG_IX_ON_NAME_ERROR)) {  in profile_onexec()
780 				   "variables for %s label=", xname);  in profile_onexec()
794 static struct aa_label *handle_onexec(struct aa_label *label,  in handle_onexec()  argument
804 	AA_BUG(!label);  in handle_onexec()
810 		error = fn_for_each_in_ns(label, profile,  in handle_onexec()
815 		new = fn_label_build_in_ns(label, profile, GFP_KERNEL,  in handle_onexec()
822 		error = fn_for_each_in_ns(label, profile,  in handle_onexec()
827 		new = fn_label_build_in_ns(label, profile, GFP_KERNEL,  in handle_onexec()
828 				aa_label_merge(&profile->label, onexec,  in handle_onexec()
838 	error = fn_for_each_in_ns(label, profile,  in handle_onexec()
842 				      "failed to build target label", -ENOMEM));  in handle_onexec()
857 	struct aa_label *label, *new = NULL;  in apparmor_bprm_creds_for_exec()  local
874 	label = aa_get_newest_label(cred_label(bprm->cred));  in apparmor_bprm_creds_for_exec()
877 	 * Detect no new privs being set, and store the label it  in apparmor_bprm_creds_for_exec()
883 	if ((bprm->unsafe & LSM_UNSAFE_NO_NEW_PRIVS) && !unconfined(label) &&  in apparmor_bprm_creds_for_exec()
885 		ctx->nnp = aa_get_label(label);  in apparmor_bprm_creds_for_exec()
896 		new = handle_onexec(label, ctx->onexec, ctx->token,  in apparmor_bprm_creds_for_exec()
899 		new = fn_label_build(label, profile, GFP_KERNEL,  in apparmor_bprm_creds_for_exec()
921 	    !unconfined(label) &&  in apparmor_bprm_creds_for_exec()
934 		/* TODO: test needs to be profile of label to new */  in apparmor_bprm_creds_for_exec()
943 				   "label=", bprm->filename);  in apparmor_bprm_creds_for_exec()
950 	if (label->proxy != new->proxy) {  in apparmor_bprm_creds_for_exec()
954 				   "bits. %s label=", bprm->filename);  in apparmor_bprm_creds_for_exec()
965 	aa_put_label(label);  in apparmor_bprm_creds_for_exec()
971 	error = fn_for_each(label, profile,  in apparmor_bprm_creds_for_exec()
986  * Returns: label for hat transition OR ERR_PTR.  Does NOT return NULL
1022 		      hat ? &hat->label : NULL, GLOBAL_ROOT_UID, info,  in build_change_hat()
1027 	 * complain mode allow by returning hat->label  in build_change_hat()
1029 	return &hat->label;  in build_change_hat()
1034  * Returns: label for hat transition or ERR_PTR. Does not return NULL
1036 static struct aa_label *change_hat(struct aa_label *label, const char *hats[],  in change_hat()  argument
1046 	AA_BUG(!label);  in change_hat()
1050 	if (PROFILE_IS_HAT(labels_profile(label)))  in change_hat()
1056 		label_for_each_in_ns(it, labels_ns(label), label, profile) {  in change_hat()
1092 	label_for_each_in_ns(it, labels_ns(label), label, profile) {  in change_hat()
1103 	label_for_each_in_ns(it, labels_ns(label), label, profile) {  in change_hat()
1120 	new = fn_label_build_in_ns(label, profile, GFP_KERNEL,  in change_hat()
1122 				   aa_get_label(&profile->label));  in change_hat()
1124 		info = "label build failed";  in change_hat()
1153 	struct aa_label *label, *previous, *new = NULL, *target = NULL;  in aa_change_hat()  local
1161 	label = aa_get_newest_cred_label(cred);  in aa_change_hat()
1165 	 * Detect no new privs being set, and store the label it  in aa_change_hat()
1171 	if (task_no_new_privs(current) && !unconfined(label) && !ctx->nnp)  in aa_change_hat()
1172 		ctx->nnp = aa_get_label(label);  in aa_change_hat()
1174 	if (unconfined(label)) {  in aa_change_hat()
1181 		new = change_hat(label, hats, count, flags);  in aa_change_hat()
1198 		if (task_no_new_privs(current) && !unconfined(label) &&  in aa_change_hat()
1219 		if (task_no_new_privs(current) && !unconfined(label) &&  in aa_change_hat()
1227 		/* Return to saved label.  Kill task if restore fails  in aa_change_hat()
1242 	aa_put_label(label);  in aa_change_hat()
1252 	fn_for_each_in_ns(label, profile,  in aa_change_hat()
1296 	struct aa_label *label, *new = NULL, *target = NULL;  in aa_change_profile()  local
1307 	label = aa_get_current_label();  in aa_change_profile()
1310 	 * Detect no new privs being set, and store the label it  in aa_change_profile()
1316 	if (task_no_new_privs(current) && !unconfined(label) && !ctx->nnp)  in aa_change_profile()
1317 		ctx->nnp = aa_get_label(label);  in aa_change_profile()
1320 		aa_put_label(label);  in aa_change_profile()
1344 	target = aa_label_parse(label, fqname, GFP_KERNEL, true, false);  in aa_change_profile()
1348 		info = "label not found";  in aa_change_profile()
1356 		    !COMPLAIN_MODE(labels_profile(label)))  in aa_change_profile()
1359 		tprofile = aa_new_null_profile(labels_profile(label), false,  in aa_change_profile()
1366 		target = &tprofile->label;  in aa_change_profile()
1378 	error = fn_for_each_in_ns(label, profile,  in aa_change_profile()
1391 	if (error && !fn_for_each_in_ns(label, profile,  in aa_change_profile()
1407 		new = fn_label_build_in_ns(label, profile, GFP_KERNEL,  in aa_change_profile()
1409 					   aa_get_label(&profile->label));  in aa_change_profile()
1414 		if (task_no_new_privs(current) && !unconfined(label) &&  in aa_change_profile()
1426 			new = aa_label_merge(label, target, GFP_KERNEL);  in aa_change_profile()
1428 			info = "failed to build target label";  in aa_change_profile()
1449 	error = fn_for_each_in_ns(label, profile,  in aa_change_profile()
1457 	aa_put_label(label);  in aa_change_profile()