1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * efi_selftest_manageprotocols
4  *
5  * Copyright (c) 2017 Heinrich Schuchardt <xypron.glpk@gmx.de>
6  *
7  * This unit test checks the following protocol services:
8  * InstallProtocolInterface, UninstallProtocolInterface,
9  * InstallMultipleProtocolsInterfaces, UninstallMultipleProtocolsInterfaces,
10  * HandleProtocol, ProtocolsPerHandle,
11  * LocateHandle, LocateHandleBuffer.
12  */
13 
14 #include <efi_selftest.h>
15 
16 /*
17  * The test currently does not actually call the interface function.
18  * So this is just a dummy structure.
19  */
20 struct interface {
21 	void (EFIAPI * inc)(void);
22 };
23 
24 static struct efi_boot_services *boottime;
25 static efi_guid_t guid1 =
26 	EFI_GUID(0x2e7ca819, 0x21d3, 0x0a3a,
27 		 0xf7, 0x91, 0x82, 0x1f, 0x7a, 0x83, 0x67, 0xaf);
28 static efi_guid_t guid2 =
29 	EFI_GUID(0xf909f2bb, 0x90a8, 0x0d77,
30 		 0x94, 0x0c, 0x3e, 0xa8, 0xea, 0x38, 0xd6, 0x6f);
31 static efi_guid_t guid3 =
32 	EFI_GUID(0x06d641a3, 0xf4e7, 0xe0c9,
33 		 0xe7, 0x8d, 0x41, 0x2d, 0x72, 0xa6, 0xb1, 0x24);
34 static efi_handle_t handle1;
35 static efi_handle_t handle2;
36 static struct interface interface1;
37 static struct interface interface2;
38 static struct interface interface3;
39 static struct interface interface4;
40 
41 /*
42  * Find a handle in an array.
43  *
44  * @handle:	handle to find
45  * @count:	number of entries in the array
46  * @buffer:	array to search
47  */
find_in_buffer(efi_handle_t handle,size_t count,efi_handle_t * buffer)48 efi_status_t find_in_buffer(efi_handle_t handle, size_t count,
49 			    efi_handle_t *buffer)
50 {
51 	size_t i;
52 
53 	for (i = 0; i < count; ++i) {
54 		if (buffer[i] == handle)
55 			return EFI_SUCCESS;
56 	}
57 	return EFI_NOT_FOUND;
58 }
59 
60 /*
61  * Setup unit test.
62  *
63  * Create two handles and install two out of three protocol interfaces on each
64  * of them:
65  *
66  * handle1
67  *   guid1 interface1
68  *   guid3 interface3
69  * handle2
70  *   guid1 interface4
71  *   guid2 interface2
72  *
73  * @handle:	handle of the loaded image
74  * @systable:	system table
75  */
setup(const efi_handle_t img_handle,const struct efi_system_table * systable)76 static int setup(const efi_handle_t img_handle,
77 		 const struct efi_system_table *systable)
78 {
79 	efi_status_t ret;
80 	efi_handle_t handle;
81 
82 	boottime = systable->boottime;
83 
84 	ret = boottime->install_protocol_interface(&handle1, &guid3,
85 						   EFI_NATIVE_INTERFACE,
86 						   &interface3);
87 	if (ret != EFI_SUCCESS) {
88 		efi_st_error("InstallProtocolInterface failed\n");
89 		return EFI_ST_FAILURE;
90 	}
91 	if (!handle1) {
92 		efi_st_error("InstallProtocolInterface failed to create handle\n");
93 		return EFI_ST_FAILURE;
94 	}
95 	handle = handle1;
96 	ret = boottime->install_protocol_interface(&handle1, &guid1,
97 						   EFI_NATIVE_INTERFACE,
98 						   &interface1);
99 	if (ret != EFI_SUCCESS) {
100 		efi_st_error("InstallProtocolInterface failed\n");
101 		return EFI_ST_FAILURE;
102 	}
103 	if (handle != handle1) {
104 		efi_st_error("InstallProtocolInterface failed to use handle\n");
105 		return EFI_ST_FAILURE;
106 	}
107 	ret = boottime->install_multiple_protocol_interfaces(&handle2,
108 			&guid1, &interface4, &guid2, &interface2, NULL);
109 	if (ret != EFI_SUCCESS) {
110 		efi_st_error("InstallMultipleProtocolInterfaces failed\n");
111 		return EFI_ST_FAILURE;
112 	}
113 	if (!handle2 || handle1 == handle2) {
114 		efi_st_error("InstallMultipleProtocolInterfaces failed to create handle\n");
115 		return EFI_ST_FAILURE;
116 	}
117 
118 	return EFI_ST_SUCCESS;
119 }
120 
121 /*
122  * Tear down unit test.
123  *
124  */
teardown(void)125 static int teardown(void)
126 {
127 	return EFI_ST_SUCCESS;
128 }
129 
130 /*
131  * Execute unit test.
132  *
133  */
execute(void)134 static int execute(void)
135 {
136 	struct interface *interface;
137 	efi_status_t ret;
138 	efi_handle_t *buffer;
139 	size_t buffer_size;
140 	efi_uintn_t count = 0;
141 	efi_guid_t **prot_buffer;
142 	efi_uintn_t prot_count;
143 
144 	/*
145 	 * Test HandleProtocol
146 	 */
147 	ret = boottime->handle_protocol(handle1, &guid3, (void **)&interface);
148 	if (ret != EFI_SUCCESS) {
149 		efi_st_error("HandleProtocol failed to retrieve interface\n");
150 		return EFI_ST_FAILURE;
151 	}
152 	if (interface != &interface3) {
153 		efi_st_error("HandleProtocol returned wrong interface\n");
154 		return EFI_ST_FAILURE;
155 	}
156 	ret = boottime->handle_protocol(handle1, &guid2, (void **)&interface);
157 	if (ret == EFI_SUCCESS) {
158 		efi_st_error("HandleProtocol returned not installed interface\n");
159 		return EFI_ST_FAILURE;
160 	}
161 
162 	/*
163 	 * Test LocateHandleBuffer with AllHandles
164 	 */
165 	ret = boottime->locate_handle_buffer(ALL_HANDLES, NULL, NULL,
166 					     &count, &buffer);
167 	if (ret != EFI_SUCCESS) {
168 		efi_st_error("LocateHandleBuffer with AllHandles failed\n");
169 		return EFI_ST_FAILURE;
170 	}
171 	buffer_size = count;
172 	ret = find_in_buffer(handle1, count, buffer);
173 	if (ret != EFI_SUCCESS) {
174 		efi_st_error("LocateHandleBuffer failed to locate new handle\n");
175 		return EFI_ST_FAILURE;
176 	}
177 	ret = find_in_buffer(handle2, count, buffer);
178 	if (ret != EFI_SUCCESS) {
179 		efi_st_error("LocateHandleBuffer failed to locate new handle\n");
180 		return EFI_ST_FAILURE;
181 	}
182 	/* Release buffer */
183 	ret = boottime->free_pool(buffer);
184 	if (ret != EFI_SUCCESS) {
185 		efi_st_error("FreePool failed\n");
186 		return EFI_ST_FAILURE;
187 	}
188 
189 	/*
190 	 * Test error handling in UninstallMultipleProtocols
191 	 *
192 	 * These are the installed protocol interfaces on handle 2:
193 	 *
194 	 *   guid1 interface4
195 	 *   guid2 interface2
196 	 *
197 	 * Try to uninstall more protocols than there are installed. This
198 	 * should return an error EFI_INVALID_PARAMETER. All deleted protocols
199 	 * should be reinstalled.
200 	 */
201 	ret = boottime->uninstall_multiple_protocol_interfaces(
202 						handle2,
203 						&guid1, &interface4,
204 						&guid2, &interface2,
205 						&guid3, &interface3,
206 						NULL);
207 	if (ret != EFI_INVALID_PARAMETER) {
208 		printf("%lx", ret);
209 		efi_st_error("UninstallMultipleProtocolInterfaces did not catch error\n");
210 		return EFI_ST_FAILURE;
211 	}
212 
213 	/*
214 	 * Test LocateHandleBuffer with ByProtocol
215 	 *
216 	 * These are the handles with a guid1 protocol interface installed:
217 	 *
218 	 *	handle1, handle2
219 	 */
220 	count = buffer_size;
221 	ret = boottime->locate_handle_buffer(BY_PROTOCOL, &guid1, NULL,
222 					     &count, &buffer);
223 	if (ret != EFI_SUCCESS) {
224 		efi_st_error("LocateHandleBuffer failed to locate new handles\n");
225 		return EFI_ST_FAILURE;
226 	}
227 	if (count != 2) {
228 		efi_st_error("UninstallMultipleProtocolInterfaces deleted handle\n");
229 		return EFI_ST_FAILURE;
230 	}
231 	ret = find_in_buffer(handle1, count, buffer);
232 	if (ret != EFI_SUCCESS) {
233 		efi_st_error("LocateHandleBuffer failed to locate new handle\n");
234 		return EFI_ST_FAILURE;
235 	}
236 	ret = find_in_buffer(handle2, count, buffer);
237 	if (ret != EFI_SUCCESS) {
238 		efi_st_error("LocateHandleBuffer failed to locate new handle\n");
239 		return EFI_ST_FAILURE;
240 	}
241 	/* Clear the buffer, we are reusing it it the next step. */
242 	boottime->set_mem(buffer, sizeof(efi_handle_t) * buffer_size, 0);
243 
244 	/*
245 	 * Test LocateHandle with ByProtocol
246 	 */
247 	count = buffer_size * sizeof(efi_handle_t);
248 	ret = boottime->locate_handle(BY_PROTOCOL, &guid1, NULL,
249 				      &count, buffer);
250 	if (ret != EFI_SUCCESS) {
251 		efi_st_error("LocateHandle with ByProtocol failed\n");
252 		return EFI_ST_FAILURE;
253 	}
254 	if (count / sizeof(efi_handle_t) != 2) {
255 		efi_st_error("LocateHandle failed to locate new handles\n");
256 		return EFI_ST_FAILURE;
257 	}
258 	buffer_size = count;
259 	ret = find_in_buffer(handle1, count, buffer);
260 	if (ret != EFI_SUCCESS) {
261 		efi_st_error("LocateHandle failed to locate new handles\n");
262 		return EFI_ST_FAILURE;
263 	}
264 	ret = find_in_buffer(handle2, count, buffer);
265 	if (ret != EFI_SUCCESS) {
266 		efi_st_error("LocateHandle failed to locate new handles\n");
267 		return EFI_ST_FAILURE;
268 	}
269 	/* Release buffer */
270 	ret = boottime->free_pool(buffer);
271 	if (ret != EFI_SUCCESS) {
272 		efi_st_error("FreePool failed\n");
273 		return EFI_ST_FAILURE;
274 	}
275 
276 	/*
277 	 * Test LocateProtocol
278 	 */
279 	ret = boottime->locate_protocol(&guid1, NULL, (void **)&interface);
280 	if (ret != EFI_SUCCESS) {
281 		efi_st_error("LocateProtocol failed\n");
282 		return EFI_ST_FAILURE;
283 	}
284 	if (interface != &interface1 && interface != &interface4) {
285 		efi_st_error("LocateProtocol failed to locate protocol\n");
286 		return EFI_ST_FAILURE;
287 	}
288 
289 	/*
290 	 * Test UninstallMultipleProtocols
291 	 */
292 	ret = boottime->uninstall_multiple_protocol_interfaces(
293 						handle2,
294 						&guid1, &interface4,
295 						&guid2, &interface2,
296 						NULL);
297 	if (ret != EFI_SUCCESS) {
298 		efi_st_error("UninstallMultipleProtocolInterfaces failed\n");
299 		return EFI_ST_FAILURE;
300 	}
301 	/*
302 	 * Check that the protocols are really uninstalled.
303 	 */
304 	count = buffer_size;
305 	ret = boottime->locate_handle_buffer(BY_PROTOCOL, &guid1, NULL,
306 					     &count, &buffer);
307 	if (ret != EFI_SUCCESS) {
308 		efi_st_error("LocateHandleBuffer failed\n");
309 		return EFI_ST_FAILURE;
310 	}
311 	if (count != 1) {
312 		efi_st_error("UninstallMultipleProtocolInterfaces failed to uninstall protocols\n");
313 		return EFI_ST_FAILURE;
314 	}
315 	ret = find_in_buffer(handle1, count, buffer);
316 	if (ret != EFI_SUCCESS) {
317 		efi_st_error("Failed to locate new handle\n");
318 		return EFI_ST_FAILURE;
319 	}
320 	boottime->set_mem(buffer, sizeof(efi_handle_t) * buffer_size, 0);
321 
322 	/*
323 	 * Test ProtocolsPerHandle
324 	 */
325 	ret = boottime->protocols_per_handle(handle1,
326 					     &prot_buffer, &prot_count);
327 	if (ret != EFI_SUCCESS) {
328 		efi_st_error("Failed to get protocols per handle\n");
329 		return EFI_ST_FAILURE;
330 	}
331 	if (prot_count != 2) {
332 		efi_st_error("Failed to get protocols per handle\n");
333 		return EFI_ST_FAILURE;
334 	}
335 	if (memcmp(prot_buffer[0], &guid1, 16) &&
336 	    memcmp(prot_buffer[1], &guid1, 16)) {
337 		efi_st_error("Failed to get protocols per handle\n");
338 		return EFI_ST_FAILURE;
339 	}
340 	if (memcmp(prot_buffer[0], &guid3, 16) &&
341 	    memcmp(prot_buffer[1], &guid3, 16)) {
342 		efi_st_error("Failed to get protocols per handle\n");
343 		return EFI_ST_FAILURE;
344 	}
345 	/* Release buffer */
346 	ret = boottime->free_pool(prot_buffer);
347 	if (ret != EFI_SUCCESS) {
348 		efi_st_error("FreePool failed\n");
349 		return EFI_ST_FAILURE;
350 	}
351 
352 	/*
353 	 * Uninstall remaining protocols
354 	 */
355 	ret = boottime->uninstall_protocol_interface(handle1, &guid1,
356 						     &interface1);
357 	if (ret != EFI_SUCCESS) {
358 		efi_st_error("UninstallProtocolInterface failed\n");
359 		return EFI_ST_FAILURE;
360 	}
361 	ret = boottime->handle_protocol(handle1, &guid1, (void **)&interface);
362 	if (ret == EFI_SUCCESS) {
363 		efi_st_error("UninstallProtocolInterface failed\n");
364 		return EFI_ST_FAILURE;
365 	}
366 	ret = boottime->uninstall_protocol_interface(handle1, &guid3,
367 						     &interface3);
368 	if (ret != EFI_SUCCESS) {
369 		efi_st_error("UninstallProtocolInterface failed\n");
370 		return EFI_ST_FAILURE;
371 	}
372 
373 	return EFI_ST_SUCCESS;
374 }
375 
376 EFI_UNIT_TEST(protserv) = {
377 	.name = "manage protocols",
378 	.phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT,
379 	.setup = setup,
380 	.execute = execute,
381 	.teardown = teardown,
382 };
383