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   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  */
  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  */
  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  */
 125 static int teardown(void)
 126 {
 127         return EFI_ST_SUCCESS;
 128 }
 129
 130 /*
 131  * Execute unit test.
 132  *
 133  */
 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         boottime->set_mem(buffer, sizeof(efi_handle_t) * buffer_size, 0);
 183
 184         /*
 185          * Test error handling in UninstallMultipleProtocols
 186          *
 187          * Try to uninstall more protocols than there are installed.
 188          */
 189         ret = boottime->uninstall_multiple_protocol_interfaces(
 190                                                 handle2,
 191                                                 &guid1, &interface4,
 192                                                 &guid2, &interface2,
 193                                                 &guid3, &interface3,
 194                                                 NULL);
 195         if (ret == EFI_SUCCESS) {
 196                 efi_st_error("UninstallMultipleProtocolInterfaces did not catch error\n");
 197                 return EFI_ST_FAILURE;
 198         }
 199
 200         /*
 201          * Test LocateHandleBuffer with ByProtocol
 202          */
 203         count = buffer_size;
 204         ret = boottime->locate_handle_buffer(BY_PROTOCOL, &guid1, NULL,
 205                                              &count, &buffer);
 206         if (ret != EFI_SUCCESS) {
 207                 efi_st_error("LocateHandleBuffer failed to locate new handles\n");
 208                 return EFI_ST_FAILURE;
 209         }
 210         if (count != 2) {
 211                 efi_st_error("LocateHandleBuffer failed to locate new handles\n");
 212                 return EFI_ST_FAILURE;
 213         }
 214         ret = find_in_buffer(handle1, count, buffer);
 215         if (ret != EFI_SUCCESS) {
 216                 efi_st_error("LocateHandleBuffer failed to locate new handle\n");
 217                 return EFI_ST_FAILURE;
 218         }
 219         ret = find_in_buffer(handle2, count, buffer);
 220         if (ret != EFI_SUCCESS) {
 221                 efi_st_error("LocateHandleBuffer failed to locate new handle\n");
 222                 return EFI_ST_FAILURE;
 223         }
 224         boottime->set_mem(buffer, sizeof(efi_handle_t) * buffer_size, 0);
 225
 226         /*
 227          * Test LocateHandle with ByProtocol
 228          */
 229         count = buffer_size * sizeof(efi_handle_t);
 230         ret = boottime->locate_handle(BY_PROTOCOL, &guid1, NULL,
 231                                       &count, buffer);
 232         if (ret != EFI_SUCCESS) {
 233                 efi_st_error("LocateHandle with ByProtocol failed\n");
 234                 return EFI_ST_FAILURE;
 235         }
 236         if (count / sizeof(efi_handle_t) != 2) {
 237                 efi_st_error("LocateHandle failed to locate new handles\n");
 238                 return EFI_ST_FAILURE;
 239         }
 240         buffer_size = count;
 241         ret = find_in_buffer(handle1, count, buffer);
 242         if (ret != EFI_SUCCESS) {
 243                 efi_st_error("LocateHandle failed to locate new handles\n");
 244                 return EFI_ST_FAILURE;
 245         }
 246         ret = find_in_buffer(handle2, count, buffer);
 247         if (ret != EFI_SUCCESS) {
 248                 efi_st_error("LocateHandle failed to locate new handles\n");
 249                 return EFI_ST_FAILURE;
 250         }
 251         boottime->set_mem(buffer, sizeof(efi_handle_t) * buffer_size, 0);
 252
 253         /*
 254          * Test LocateProtocol
 255          */
 256         ret = boottime->locate_protocol(&guid1, NULL, (void **)&interface);
 257         if (ret != EFI_SUCCESS) {
 258                 efi_st_error("LocateProtocol failed\n");
 259                 return EFI_ST_FAILURE;
 260         }
 261         if (interface != &interface1 && interface != &interface4) {
 262                 efi_st_error("LocateProtocol failed to locate protocol\n");
 263                 return EFI_ST_FAILURE;
 264         }
 265
 266         /*
 267          * Test UninstallMultipleProtocols
 268          */
 269         ret = boottime->uninstall_multiple_protocol_interfaces(
 270                                                 handle2,
 271                                                 &guid1, &interface4,
 272                                                 &guid2, &interface2,
 273                                                 NULL);
 274         if (ret != EFI_SUCCESS) {
 275                 efi_st_error("UninstallMultipleProtocolInterfaces failed\n");
 276                 return EFI_ST_FAILURE;
 277         }
 278         /*
 279          * Check that the protocols are really uninstalled.
 280          */
 281         count = buffer_size;
 282         ret = boottime->locate_handle_buffer(BY_PROTOCOL, &guid1, NULL,
 283                                              &count, &buffer);
 284         if (ret != EFI_SUCCESS) {
 285                 efi_st_error("LocateHandleBuffer failed\n");
 286                 return EFI_ST_FAILURE;
 287         }
 288         if (count != 1) {
 289                 efi_st_error("UninstallMultipleProtocolInterfaces failed to uninstall protocols\n");
 290                 return EFI_ST_FAILURE;
 291         }
 292         ret = find_in_buffer(handle1, count, buffer);
 293         if (ret != EFI_SUCCESS) {
 294                 efi_st_error("Failed to locate new handle\n");
 295                 return EFI_ST_FAILURE;
 296         }
 297         boottime->set_mem(buffer, sizeof(efi_handle_t) * buffer_size, 0);
 298
 299         /*
 300          * Test ProtocolsPerHandle
 301          */
 302         ret = boottime->protocols_per_handle(handle1,
 303                                              &prot_buffer, &prot_count);
 304         if (ret != EFI_SUCCESS) {
 305                 efi_st_error("Failed to get protocols per handle\n");
 306                 return EFI_ST_FAILURE;
 307         }
 308         if (prot_count != 2) {
 309                 efi_st_error("Failed to get protocols per handle\n");
 310                 return EFI_ST_FAILURE;
 311         }
 312         if (efi_st_memcmp(prot_buffer[0], &guid1, 16) &&
 313             efi_st_memcmp(prot_buffer[1], &guid1, 16)) {
 314                 efi_st_error("Failed to get protocols per handle\n");
 315                 return EFI_ST_FAILURE;
 316         }
 317         if (efi_st_memcmp(prot_buffer[0], &guid3, 16) &&
 318             efi_st_memcmp(prot_buffer[1], &guid3, 16)) {
 319                 efi_st_error("Failed to get protocols per handle\n");
 320                 return EFI_ST_FAILURE;
 321         }
 322
 323         /*
 324          * Uninstall remaining protocols
 325          */
 326         ret = boottime->uninstall_protocol_interface(handle1, &guid1,
 327                                                      &interface1);
 328         if (ret != EFI_SUCCESS) {
 329                 efi_st_error("UninstallProtocolInterface failed\n");
 330                 return EFI_ST_FAILURE;
 331         }
 332         ret = boottime->handle_protocol(handle1, &guid1, (void **)&interface);
 333         if (ret == EFI_SUCCESS) {
 334                 efi_st_error("UninstallProtocolInterface failed\n");
 335                 return EFI_ST_FAILURE;
 336         }
 337         ret = boottime->uninstall_protocol_interface(handle1, &guid3,
 338                                                      &interface1);
 339         if (ret != EFI_SUCCESS) {
 340                 efi_st_error("UninstallProtocolInterface failed\n");
 341                 return EFI_ST_FAILURE;
 342         }
 343
 344         return EFI_ST_SUCCESS;
 345 }
 346
 347 EFI_UNIT_TEST(protserv) = {
 348         .name = "manage protocols",
 349         .phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT,
 350         .setup = setup,
 351         .execute = execute,
 352         .teardown = teardown,
 353 };