Verify that the loaded image protocol is installed on the image handle. Verify that the loaded image protocol points to the system table.

Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- lib/efi_selftest/Makefile | 1 + lib/efi_selftest/efi_selftest_loaded_image.c | 108 +++++++++++++++++++ 2 files changed, 109 insertions(+) create mode 100644 lib/efi_selftest/efi_selftest_loaded_image.c

diff --git a/lib/efi_selftest/Makefile b/lib/efi_selftest/Makefile index 590f90b16d..86aa72b0e0 100644 --- a/lib/efi_selftest/Makefile +++ b/lib/efi_selftest/Makefile @@ -24,6 +24,7 @@ efi_selftest_event_groups.o \ efi_selftest_exitbootservices.o \ efi_selftest_fdt.o \ efi_selftest_gop.o \ +efi_selftest_loaded_image.o \ efi_selftest_manageprotocols.o \ efi_selftest_rtc.o \ efi_selftest_snp.o \ diff --git a/lib/efi_selftest/efi_selftest_loaded_image.c b/lib/efi_selftest/efi_selftest_loaded_image.c new file mode 100644 index 0000000000..f9b54ae263 --- /dev/null +++ b/lib/efi_selftest/efi_selftest_loaded_image.c @@ -0,0 +1,108 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * efi_selftest_loaded_image + * + * Copyright (c) 2018 Heinrich Schuchardt xypron.glpk@gmx.de + * + * This unit test checks the Loaded Image Protocol. + */ + +#include <efi_selftest.h> + +static efi_guid_t loaded_image_protocol_guid = + EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, + 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b); +static struct efi_boot_services *boottime; +efi_handle_t image_handle; + +/* + * Setup unit test. + * + * @handle: handle of the loaded image + * @systable: system table + */ +static int setup(const efi_handle_t img_handle, + const struct efi_system_table *systable) +{ + boottime = systable->boottime; + image_handle = img_handle; + + return EFI_ST_SUCCESS; +} + +/* + * Execute unit test. + * + * Verify that the loaded image protocol is installed on the image handle. + * Verify that the loaded image protocol points to the system table. + */ +static int execute(void) +{ + efi_status_t ret; + efi_uintn_t i, protocol_buffer_count = 0; + efi_guid_t **protocol_buffer = NULL; + bool found = false; + struct efi_loaded_image *loaded_image_protocol; + + /* + * Get the GUIDs of all protocols installed on the handle. + */ + ret = boottime->protocols_per_handle(image_handle, &protocol_buffer, + &protocol_buffer_count); + if (ret != EFI_SUCCESS) { + efi_st_error("ProtocolsPerHandle failed\n"); + return EFI_ST_FAILURE; + } + if (!protocol_buffer_count | !protocol_buffer) { + efi_st_error("ProtocolsPerHandle returned no protocol\n"); + return EFI_ST_FAILURE; + } + efi_st_printf("%u protocols installed on image handle\n", + (unsigned int)protocol_buffer_count); + for (i = 0; i < protocol_buffer_count; ++i) { + if (efi_st_memcmp(protocol_buffer[i], + &loaded_image_protocol_guid, + sizeof(efi_guid_t))) + found = true; + } + if (!found) { + efi_st_printf("LoadedImageProtocol not found\n"); + return EFI_ST_FAILURE; + } + ret = boottime->free_pool(protocol_buffer); + if (ret != EFI_SUCCESS) { + efi_st_error("FreePool failed\n"); + return EFI_ST_FAILURE; + } + + /* + * Open the loaded image protocol. + */ + ret = boottime->open_protocol(image_handle, &loaded_image_protocol_guid, + (void **)&loaded_image_protocol, NULL, + NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL); + if (ret != EFI_SUCCESS) { + efi_st_error("OpenProtocol failed\n"); + return EFI_ST_FAILURE; + } + if (loaded_image_protocol->revision != + EFI_LOADED_IMAGE_PROTOCOL_REVISION) { + efi_st_printf("Incorrect revision\n"); + return EFI_ST_FAILURE; + } + if (!loaded_image_protocol->system_table || + loaded_image_protocol->system_table->hdr.signature != + EFI_SYSTEM_TABLE_SIGNATURE) { + efi_st_printf("System table reference missing\n"); + return EFI_ST_FAILURE; + } + + return EFI_ST_SUCCESS; +} + +EFI_UNIT_TEST(loadedimage) = { + .name = "loaded image", + .phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT, + .setup = setup, + .execute = execute, +};