linux-master/kernel/sysctl-test.c

3  * KUnit test of proc sysctl.
6 #include <kunit/test.h>
16 static void sysctl_test_api_dointvec_null_tbl_data(struct kunit *test)
36 	void __user *buffer = (void __user *)kunit_kzalloc(test, sizeof(int),
46 	KUNIT_EXPECT_EQ(test, 0, proc_dointvec(&null_data_table,
49 	KUNIT_EXPECT_EQ(test, 0, len);
55 	KUNIT_EXPECT_EQ(test, 0, proc_dointvec(&null_data_table,
58 	KUNIT_EXPECT_EQ(test, 0, len);
62  * Similar to the previous test, we create a struct ctrl_table that has a .data
66 static void sysctl_test_api_dointvec_table_maxlen_unset(struct kunit *test)
82 	void __user *buffer = (void __user *)kunit_kzalloc(test, sizeof(int),
92 	KUNIT_EXPECT_EQ(test, 0, proc_dointvec(&data_maxlen_unset_table,
95 	KUNIT_EXPECT_EQ(test, 0, len);
101 	KUNIT_EXPECT_EQ(test, 0, proc_dointvec(&data_maxlen_unset_table,
104 	KUNIT_EXPECT_EQ(test, 0, len);
112 static void sysctl_test_api_dointvec_table_len_is_zero(struct kunit *test)
125 	void __user *buffer = (void __user *)kunit_kzalloc(test, sizeof(int),
133 	KUNIT_EXPECT_EQ(test, 0, proc_dointvec(&table, KUNIT_PROC_READ, buffer,
135 	KUNIT_EXPECT_EQ(test, 0, len);
137 	KUNIT_EXPECT_EQ(test, 0, proc_dointvec(&table, KUNIT_PROC_WRITE, buffer,
139 	KUNIT_EXPECT_EQ(test, 0, len);
146 		struct kunit *test)
159 	void __user *buffer = (void __user *)kunit_kzalloc(test, sizeof(int),
172 	KUNIT_EXPECT_EQ(test, 0, proc_dointvec(&table, KUNIT_PROC_READ, buffer,
174 	KUNIT_EXPECT_EQ(test, 0, len);
181 static void sysctl_test_dointvec_read_happy_single_positive(struct kunit *test)
196 	char *buffer = kunit_kzalloc(test, len, GFP_USER);
201 	KUNIT_EXPECT_EQ(test, 0, proc_dointvec(&table, KUNIT_PROC_READ,
203 	KUNIT_ASSERT_EQ(test, 3, len);
206 	KUNIT_EXPECT_STREQ(test, "13\n", buffer);
210  * Same as previous test, just now with negative numbers.
212 static void sysctl_test_dointvec_read_happy_single_negative(struct kunit *test)
227 	char *buffer = kunit_kzalloc(test, len, GFP_USER);
231 	KUNIT_EXPECT_EQ(test, 0, proc_dointvec(&table, KUNIT_PROC_READ,
233 	KUNIT_ASSERT_EQ(test, 4, len);
235 	KUNIT_EXPECT_STREQ(test, "-16\n", buffer);
241 static void sysctl_test_dointvec_write_happy_single_positive(struct kunit *test)
257 	char *buffer = kunit_kzalloc(test, len, GFP_USER);
262 	KUNIT_EXPECT_EQ(test, 0, proc_dointvec(&table, KUNIT_PROC_WRITE,
264 	KUNIT_EXPECT_EQ(test, sizeof(input) - 1, len);
265 	KUNIT_EXPECT_EQ(test, sizeof(input) - 1, pos);
266 	KUNIT_EXPECT_EQ(test, 9, *((int *)table.data));
270  * Same as previous test, but now with negative numbers.
272 static void sysctl_test_dointvec_write_happy_single_negative(struct kunit *test)
287 	char *buffer = kunit_kzalloc(test, len, GFP_USER);
292 	KUNIT_EXPECT_EQ(test, 0, proc_dointvec(&table, KUNIT_PROC_WRITE,
294 	KUNIT_EXPECT_EQ(test, sizeof(input) - 1, len);
295 	KUNIT_EXPECT_EQ(test, sizeof(input) - 1, pos);
296 	KUNIT_EXPECT_EQ(test, -9, *((int *)table.data));
304 		struct kunit *test)
318 	char *buffer = kunit_kzalloc(test, max_len, GFP_USER);
327 	KUNIT_ASSERT_LT(test,
332 	KUNIT_EXPECT_EQ(test, -EINVAL, proc_dointvec(&table, KUNIT_PROC_WRITE,
334 	KUNIT_EXPECT_EQ(test, max_len, len);
335 	KUNIT_EXPECT_EQ(test, 0, *((int *)table.data));
342 		struct kunit *test)
356 	char *buffer = kunit_kzalloc(test, max_len, GFP_USER);
360 	KUNIT_ASSERT_GT(test, greater_than_max, (unsigned long)INT_MAX);
361 	KUNIT_ASSERT_LT(test, (size_t)snprintf(buffer, max_len, "%lu",
364 	KUNIT_EXPECT_EQ(test, -EINVAL, proc_dointvec(&table, KUNIT_PROC_WRITE,
366 	KUNIT_ASSERT_EQ(test, max_len, len);
367 	KUNIT_EXPECT_EQ(test, 0, *((int *)table.data));