// SPDX-License-Identifier: GPL-2.0 #include <linux/reboot.h>#include <kunit/test.h>#include <kunit/attributes.h>#include <linux/glob.h>#include <linux/moduleparam.h> /* * These symbols point to the .kunit_test_suites section and are defined in * include/asm-generic/vmlinux.lds.h, and consequently must be extern. */extern struct kunit_suite * const __kunit_suites_start[];extern struct kunit_suite * const __kunit_suites_end[];extern struct kunit_suite * const __kunit_init_suites_start[];extern struct kunit_suite * const __kunit_init_suites_end[]; static struct kunit_suite_set kunit_boot_suites; void kunit_free_boot_suites(void){	if (kunit_boot_suites.start) {		kunit_free_suite_set(kunit_boot_suites);		kunit_boot_suites = (struct kunit_suite_set){ NULL, NULL };	}} static char *action_param; module_param_named(action, action_param, charp, 0400);MODULE_PARM_DESC(action,		 "Changes KUnit executor behavior, valid values are:\n"		 "<none>: run the tests like normal\n"		 "'list' to list test names instead of running them.\n"		 "'list_attr' to list test names and attributes instead of running them.\n"); const char *kunit_action(void){	return action_param;} /* * Run KUnit tests after initialization */#ifdef CONFIG_KUNIT_AUTORUN_ENABLEDstatic bool autorun_param = true;#elsestatic bool autorun_param;#endifmodule_param_named(autorun, autorun_param, bool, 0);MODULE_PARM_DESC(autorun, "Run KUnit tests after initialization"); bool kunit_autorun(void){	return autorun_param;} #define PARAM_FROM_CONFIG(config) (config[0] ? config : NULL) static char *filter_glob_param = PARAM_FROM_CONFIG(CONFIG_KUNIT_DEFAULT_FILTER_GLOB);static char *filter_param = PARAM_FROM_CONFIG(CONFIG_KUNIT_DEFAULT_FILTER);static char *filter_action_param = PARAM_FROM_CONFIG(CONFIG_KUNIT_DEFAULT_FILTER_ACTION); module_param_named(filter_glob, filter_glob_param, charp, 0600);MODULE_PARM_DESC(filter_glob,		"Filter which KUnit test suites/tests run at boot-time, e.g. list* or list*.*del_test");module_param_named(filter, filter_param, charp, 0600);MODULE_PARM_DESC(filter,		"Filter which KUnit test suites/tests run at boot-time using attributes, e.g. speed>slow");module_param_named(filter_action, filter_action_param, charp, 0600);MODULE_PARM_DESC(filter_action,		"Changes behavior of filtered tests using attributes, valid values are:\n"		"<none>: do not run filtered tests as normal\n"		"'skip': skip all filtered tests instead so tests will appear in output\n"); const char *kunit_filter_glob(void){	return filter_glob_param;} char *kunit_filter(void){	return filter_param;} char *kunit_filter_action(void){	return filter_action_param;} /* glob_match() needs NULL terminated strings, so we need a copy of filter_glob_param. */struct kunit_glob_filter {	char *suite_glob;	char *test_glob;}; /* Split "suite_glob.test_glob" into two. Assumes filter_glob is not empty. */static int kunit_parse_glob_filter(struct kunit_glob_filter *parsed,				    const char *filter_glob){	const char *period = strchr(filter_glob, '.'); 	if (!period) {		parsed->suite_glob = kstrdup(filter_glob, GFP_KERNEL);		if (!parsed->suite_glob)			return -ENOMEM;		parsed->test_glob = NULL;		return 0;	} 	parsed->suite_glob = kstrndup(filter_glob, period - filter_glob, GFP_KERNEL);	if (!parsed->suite_glob)		return -ENOMEM; 	parsed->test_glob = kstrdup(period + 1, GFP_KERNEL);	if (!parsed->test_glob) {		kfree(parsed->suite_glob);		return -ENOMEM;	} 	return 0;} /* Create a copy of suite with only tests that match test_glob. */static struct kunit_suite *kunit_filter_glob_tests(const struct kunit_suite *const suite, const char *test_glob){	int n = 0;	struct kunit_case *filtered, *test_case;	struct kunit_suite *copy; 	kunit_suite_for_each_test_case(suite, test_case) {		if (!test_glob || glob_match(test_glob, test_case->name))			++n;	} 	if (n == 0)		return NULL; 	copy = kmemdup(suite, sizeof(*copy), GFP_KERNEL);	if (!copy)		return ERR_PTR(-ENOMEM); 	filtered = kzalloc_objs(*filtered, n + 1);	if (!filtered) {		kfree(copy);		return ERR_PTR(-ENOMEM);	} 	n = 0;	kunit_suite_for_each_test_case(suite, test_case) {		if (!test_glob || glob_match(test_glob, test_case->name))			filtered[n++] = *test_case;	} 	copy->test_cases = filtered;	return copy;} void kunit_free_suite_set(struct kunit_suite_set suite_set){	struct kunit_suite * const *suites; 	for (suites = suite_set.start; suites < suite_set.end; suites++) {		kfree((*suites)->test_cases);		kfree(*suites);	}	kfree(suite_set.start);} /* * Filter and reallocate test suites. Must return the filtered test suites set * allocated at a valid virtual address or NULL in case of error. */struct kunit_suite_setkunit_filter_suites(const struct kunit_suite_set *suite_set,		    const char *filter_glob,		    char *filters,		    char *filter_action,		    int *err){	int i, j, k;	int filter_count = 0;	struct kunit_suite **copy, **copy_start, *filtered_suite, *new_filtered_suite;	struct kunit_suite_set filtered = {NULL, NULL};	struct kunit_glob_filter parsed_glob;	struct kunit_attr_filter *parsed_filters = NULL;	struct kunit_suite * const *suites; 	const size_t max = suite_set->end - suite_set->start; 	copy = kzalloc_objs(*copy, max);	if (!copy) { /* won't be able to run anything, return an empty set */		return filtered;	}	copy_start = copy; 	if (filter_glob) {		*err = kunit_parse_glob_filter(&parsed_glob, filter_glob);		if (*err)			goto free_copy;	} 	/* Parse attribute filters */	if (filters) {		filter_count = kunit_get_filter_count(filters);		parsed_filters = kzalloc_objs(*parsed_filters, filter_count);		if (!parsed_filters) {			*err = -ENOMEM;			goto free_parsed_glob;		}		for (j = 0; j < filter_count; j++)			parsed_filters[j] = kunit_next_attr_filter(&filters, err);		if (*err)			goto free_parsed_filters;	} 	for (i = 0; &suite_set->start[i] != suite_set->end; i++) {		filtered_suite = suite_set->start[i];		if (filter_glob) {			if (!glob_match(parsed_glob.suite_glob, filtered_suite->name))				continue;			filtered_suite = kunit_filter_glob_tests(filtered_suite,					parsed_glob.test_glob);			if (IS_ERR(filtered_suite)) {				*err = PTR_ERR(filtered_suite);				goto free_filtered_suite;			}		}		if (filter_count > 0 && parsed_filters != NULL) {			for (k = 0; k < filter_count; k++) {				new_filtered_suite = kunit_filter_attr_tests(filtered_suite,						parsed_filters[k], filter_action, err); 				/* Free previous copy of suite */				if (k > 0 || filter_glob) {					kfree(filtered_suite->test_cases);					kfree(filtered_suite);				} 				filtered_suite = new_filtered_suite; 				if (*err)					goto free_filtered_suite; 				if (IS_ERR(filtered_suite)) {					*err = PTR_ERR(filtered_suite);					goto free_filtered_suite;				}				if (!filtered_suite)					break;			}		} 		if (!filtered_suite)			continue; 		*copy++ = filtered_suite;	}	filtered.start = copy_start;	filtered.end = copy; free_filtered_suite:	if (*err) {		for (suites = copy_start; suites < copy; suites++) {			kfree((*suites)->test_cases);			kfree(*suites);		}	} free_parsed_filters:	if (filter_count)		kfree(parsed_filters); free_parsed_glob:	if (filter_glob) {		kfree(parsed_glob.suite_glob);		kfree(parsed_glob.test_glob);	} free_copy:	if (*err)		kfree(copy_start); 	return filtered;} void kunit_exec_run_tests(struct kunit_suite_set *suite_set, bool builtin){	size_t num_suites = suite_set->end - suite_set->start;	bool autorun = kunit_autorun(); 	if (autorun && (builtin || num_suites)) {		pr_info("KTAP version 1\n");		pr_info("1..%zu\n", num_suites);	} 	__kunit_test_suites_init(suite_set->start, num_suites, autorun);} void kunit_exec_list_tests(struct kunit_suite_set *suite_set, bool include_attr){	struct kunit_suite * const *suites;	struct kunit_case *test_case; 	/* Hack: print a ktap header so kunit.py can find the start of KUnit output. */	pr_info("KTAP version 1\n"); 	for (suites = suite_set->start; suites < suite_set->end; suites++) {		/* Print suite name and suite attributes */		pr_info("%s\n", (*suites)->name);		if (include_attr)			kunit_print_attr((void *)(*suites), false, 0); 		/* Print test case name and attributes in suite */		kunit_suite_for_each_test_case((*suites), test_case) {			pr_info("%s.%s\n", (*suites)->name, test_case->name);			if (include_attr)				kunit_print_attr((void *)test_case, true, 0);		}	}} struct kunit_suite_set kunit_merge_suite_sets(struct kunit_suite_set init_suite_set,		struct kunit_suite_set suite_set){	struct kunit_suite_set total_suite_set = {NULL, NULL};	struct kunit_suite **total_suite_start = NULL;	size_t init_num_suites, num_suites, suite_size;	int i = 0; 	init_num_suites = init_suite_set.end - init_suite_set.start;	num_suites = suite_set.end - suite_set.start;	suite_size = sizeof(suite_set.start); 	/* Allocate memory for array of all kunit suites */	total_suite_start = kmalloc_array(init_num_suites + num_suites, suite_size, GFP_KERNEL);	if (!total_suite_start)		return total_suite_set; 	/* Append and mark init suites and then append all other kunit suites */	memcpy(total_suite_start, init_suite_set.start, init_num_suites * suite_size);	for (i = 0; i < init_num_suites; i++)		total_suite_start[i]->is_init = true; 	memcpy(total_suite_start + init_num_suites, suite_set.start, num_suites * suite_size); 	/* Set kunit suite set start and end */	total_suite_set.start = total_suite_start;	total_suite_set.end = total_suite_start + (init_num_suites + num_suites); 	return total_suite_set;} #if IS_BUILTIN(CONFIG_KUNIT) static char *kunit_shutdown;core_param(kunit_shutdown, kunit_shutdown, charp, 0644); static void kunit_handle_shutdown(void){	if (!kunit_shutdown)		return; 	if (!strcmp(kunit_shutdown, "poweroff"))		kernel_power_off();	else if (!strcmp(kunit_shutdown, "halt"))		kernel_halt();	else if (!strcmp(kunit_shutdown, "reboot"))		kernel_restart(NULL); } int kunit_run_all_tests(void){	struct kunit_suite_set suite_set = {NULL, NULL};	struct kunit_suite_set filtered_suite_set = {NULL, NULL};	struct kunit_suite_set init_suite_set = {		__kunit_init_suites_start, __kunit_init_suites_end,	};	struct kunit_suite_set normal_suite_set = {		__kunit_suites_start, __kunit_suites_end,	};	size_t init_num_suites = init_suite_set.end - init_suite_set.start;	int err = 0; 	if (init_num_suites > 0) {		suite_set = kunit_merge_suite_sets(init_suite_set, normal_suite_set);		if (!suite_set.start)			goto out;	} else		suite_set = normal_suite_set; 	if (!kunit_enabled()) {		pr_info("kunit: disabled\n");		goto free_out;	} 	if (filter_glob_param || filter_param) {		filtered_suite_set = kunit_filter_suites(&suite_set, filter_glob_param,				filter_param, filter_action_param, &err); 		/* Free original suite set before using filtered suite set */		if (init_num_suites > 0)			kfree(suite_set.start);		suite_set = filtered_suite_set; 		if (err) {			pr_err("kunit executor: error filtering suites: %d\n", err);			goto free_out;		}	} 	if (!action_param)		kunit_exec_run_tests(&suite_set, true);	else if (strcmp(action_param, "list") == 0)		kunit_exec_list_tests(&suite_set, false);	else if (strcmp(action_param, "list_attr") == 0)		kunit_exec_list_tests(&suite_set, true);	else		pr_err("kunit executor: unknown action '%s'\n", action_param); free_out:	if (filter_glob_param || filter_param) {		if (err)			kunit_free_suite_set(suite_set);		else			kunit_boot_suites = suite_set;	} else if (init_num_suites > 0)		/* Don't use kunit_free_suite_set because suites aren't individually allocated */		kfree(suite_set.start); out:	kunit_handle_shutdown();	return err;} #if IS_BUILTIN(CONFIG_KUNIT_TEST)#include "executor_test.c"#endif #endif /* IS_BUILTIN(CONFIG_KUNIT) */