Line data Source code
1 : // SPDX-License-Identifier: GPL-2.0
2 :
3 : #include <linux/reboot.h>
4 : #include <kunit/test.h>
5 : #include <linux/glob.h>
6 : #include <linux/moduleparam.h>
7 :
8 : /*
9 : * These symbols point to the .kunit_test_suites section and are defined in
10 : * include/asm-generic/vmlinux.lds.h, and consequently must be extern.
11 : */
12 : extern struct kunit_suite * const __kunit_suites_start[];
13 : extern struct kunit_suite * const __kunit_suites_end[];
14 :
15 : #if IS_BUILTIN(CONFIG_KUNIT)
16 :
17 : static char *filter_glob_param;
18 : static char *action_param;
19 :
20 : module_param_named(filter_glob, filter_glob_param, charp, 0);
21 : MODULE_PARM_DESC(filter_glob,
22 : "Filter which KUnit test suites/tests run at boot-time, e.g. list* or list*.*del_test");
23 : module_param_named(action, action_param, charp, 0);
24 : MODULE_PARM_DESC(action,
25 : "Changes KUnit executor behavior, valid values are:\n"
26 : "<none>: run the tests like normal\n"
27 : "'list' to list test names instead of running them.\n");
28 :
29 : /* glob_match() needs NULL terminated strings, so we need a copy of filter_glob_param. */
30 : struct kunit_test_filter {
31 : char *suite_glob;
32 : char *test_glob;
33 : };
34 :
35 : /* Split "suite_glob.test_glob" into two. Assumes filter_glob is not empty. */
36 0 : static void kunit_parse_filter_glob(struct kunit_test_filter *parsed,
37 : const char *filter_glob)
38 : {
39 0 : const int len = strlen(filter_glob);
40 0 : const char *period = strchr(filter_glob, '.');
41 :
42 0 : if (!period) {
43 0 : parsed->suite_glob = kzalloc(len + 1, GFP_KERNEL);
44 0 : parsed->test_glob = NULL;
45 0 : strcpy(parsed->suite_glob, filter_glob);
46 0 : return;
47 : }
48 :
49 0 : parsed->suite_glob = kzalloc(period - filter_glob + 1, GFP_KERNEL);
50 0 : parsed->test_glob = kzalloc(len - (period - filter_glob) + 1, GFP_KERNEL);
51 :
52 0 : strncpy(parsed->suite_glob, filter_glob, period - filter_glob);
53 0 : strncpy(parsed->test_glob, period + 1, len - (period - filter_glob));
54 : }
55 :
56 : /* Create a copy of suite with only tests that match test_glob. */
57 : static struct kunit_suite *
58 0 : kunit_filter_tests(const struct kunit_suite *const suite, const char *test_glob)
59 : {
60 0 : int n = 0;
61 : struct kunit_case *filtered, *test_case;
62 : struct kunit_suite *copy;
63 :
64 0 : kunit_suite_for_each_test_case(suite, test_case) {
65 0 : if (!test_glob || glob_match(test_glob, test_case->name))
66 0 : ++n;
67 : }
68 :
69 0 : if (n == 0)
70 : return NULL;
71 :
72 0 : copy = kmemdup(suite, sizeof(*copy), GFP_KERNEL);
73 0 : if (!copy)
74 : return ERR_PTR(-ENOMEM);
75 :
76 0 : filtered = kcalloc(n + 1, sizeof(*filtered), GFP_KERNEL);
77 0 : if (!filtered) {
78 0 : kfree(copy);
79 0 : return ERR_PTR(-ENOMEM);
80 : }
81 :
82 0 : n = 0;
83 0 : kunit_suite_for_each_test_case(suite, test_case) {
84 0 : if (!test_glob || glob_match(test_glob, test_case->name))
85 0 : filtered[n++] = *test_case;
86 : }
87 :
88 0 : copy->test_cases = filtered;
89 0 : return copy;
90 : }
91 :
92 : static char *kunit_shutdown;
93 : core_param(kunit_shutdown, kunit_shutdown, charp, 0644);
94 :
95 : /* Stores an array of suites, end points one past the end */
96 : struct suite_set {
97 : struct kunit_suite * const *start;
98 : struct kunit_suite * const *end;
99 : };
100 :
101 0 : static void kunit_free_suite_set(struct suite_set suite_set)
102 : {
103 : struct kunit_suite * const *suites;
104 :
105 0 : for (suites = suite_set.start; suites < suite_set.end; suites++)
106 0 : kfree(*suites);
107 0 : kfree(suite_set.start);
108 0 : }
109 :
110 0 : static struct suite_set kunit_filter_suites(const struct suite_set *suite_set,
111 : const char *filter_glob,
112 : int *err)
113 : {
114 : int i;
115 : struct kunit_suite **copy, *filtered_suite;
116 : struct suite_set filtered;
117 : struct kunit_test_filter filter;
118 :
119 0 : const size_t max = suite_set->end - suite_set->start;
120 :
121 0 : copy = kmalloc_array(max, sizeof(*filtered.start), GFP_KERNEL);
122 0 : filtered.start = copy;
123 0 : if (!copy) { /* won't be able to run anything, return an empty set */
124 0 : filtered.end = copy;
125 0 : return filtered;
126 : }
127 :
128 0 : kunit_parse_filter_glob(&filter, filter_glob);
129 :
130 0 : for (i = 0; &suite_set->start[i] != suite_set->end; i++) {
131 0 : if (!glob_match(filter.suite_glob, suite_set->start[i]->name))
132 0 : continue;
133 :
134 0 : filtered_suite = kunit_filter_tests(suite_set->start[i], filter.test_glob);
135 0 : if (IS_ERR(filtered_suite)) {
136 0 : *err = PTR_ERR(filtered_suite);
137 0 : return filtered;
138 : }
139 0 : if (!filtered_suite)
140 0 : continue;
141 :
142 0 : *copy++ = filtered_suite;
143 : }
144 0 : filtered.end = copy;
145 :
146 0 : kfree(filter.suite_glob);
147 0 : kfree(filter.test_glob);
148 0 : return filtered;
149 : }
150 :
151 1 : static void kunit_handle_shutdown(void)
152 : {
153 1 : if (!kunit_shutdown)
154 : return;
155 :
156 1 : if (!strcmp(kunit_shutdown, "poweroff"))
157 0 : kernel_power_off();
158 1 : else if (!strcmp(kunit_shutdown, "halt"))
159 1 : kernel_halt();
160 0 : else if (!strcmp(kunit_shutdown, "reboot"))
161 0 : kernel_restart(NULL);
162 :
163 : }
164 :
165 1 : static void kunit_exec_run_tests(struct suite_set *suite_set)
166 : {
167 1 : size_t num_suites = suite_set->end - suite_set->start;
168 :
169 1 : pr_info("KTAP version 1\n");
170 1 : pr_info("1..%zu\n", num_suites);
171 :
172 1 : __kunit_test_suites_init(suite_set->start, num_suites);
173 1 : }
174 :
175 0 : static void kunit_exec_list_tests(struct suite_set *suite_set)
176 : {
177 : struct kunit_suite * const *suites;
178 : struct kunit_case *test_case;
179 :
180 : /* Hack: print a ktap header so kunit.py can find the start of KUnit output. */
181 0 : pr_info("KTAP version 1\n");
182 :
183 0 : for (suites = suite_set->start; suites < suite_set->end; suites++)
184 0 : kunit_suite_for_each_test_case((*suites), test_case) {
185 0 : pr_info("%s.%s\n", (*suites)->name, test_case->name);
186 : }
187 0 : }
188 :
189 1 : int kunit_run_all_tests(void)
190 : {
191 1 : struct suite_set suite_set = {__kunit_suites_start, __kunit_suites_end};
192 1 : int err = 0;
193 1 : if (!kunit_enabled()) {
194 0 : pr_info("kunit: disabled\n");
195 0 : goto out;
196 : }
197 :
198 1 : if (filter_glob_param) {
199 0 : suite_set = kunit_filter_suites(&suite_set, filter_glob_param, &err);
200 0 : if (err) {
201 0 : pr_err("kunit executor: error filtering suites: %d\n", err);
202 0 : goto out;
203 : }
204 : }
205 :
206 1 : if (!action_param)
207 1 : kunit_exec_run_tests(&suite_set);
208 0 : else if (strcmp(action_param, "list") == 0)
209 0 : kunit_exec_list_tests(&suite_set);
210 : else
211 0 : pr_err("kunit executor: unknown action '%s'\n", action_param);
212 :
213 1 : if (filter_glob_param) { /* a copy was made of each suite */
214 0 : kunit_free_suite_set(suite_set);
215 : }
216 :
217 : out:
218 1 : kunit_handle_shutdown();
219 0 : return err;
220 : }
221 :
222 : #if IS_BUILTIN(CONFIG_KUNIT_TEST)
223 : #include "executor_test.c"
224 : #endif
225 :
226 : #endif /* IS_BUILTIN(CONFIG_KUNIT) */
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