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1// SPDX-License-Identifier: GPL-2.0-only2#include <kunit/test.h>3 4static void total_mapping_size_test(struct kunit *test)5{6 struct elf_phdr empty[] = {7 { .p_type = PT_LOAD, .p_vaddr = 0, .p_memsz = 0, },8 { .p_type = PT_INTERP, .p_vaddr = 10, .p_memsz = 999999, },9 };10 /*11 * readelf -lW /bin/mount | grep '^ .*0x0' | awk '{print "\t\t{ .p_type = PT_" \12 * $1 ", .p_vaddr = " $3 ", .p_memsz = " $6 ", },"}'13 */14 struct elf_phdr mount[] = {15 { .p_type = PT_PHDR, .p_vaddr = 0x00000040, .p_memsz = 0x0002d8, },16 { .p_type = PT_INTERP, .p_vaddr = 0x00000318, .p_memsz = 0x00001c, },17 { .p_type = PT_LOAD, .p_vaddr = 0x00000000, .p_memsz = 0x0033a8, },18 { .p_type = PT_LOAD, .p_vaddr = 0x00004000, .p_memsz = 0x005c91, },19 { .p_type = PT_LOAD, .p_vaddr = 0x0000a000, .p_memsz = 0x0022f8, },20 { .p_type = PT_LOAD, .p_vaddr = 0x0000d330, .p_memsz = 0x000d40, },21 { .p_type = PT_DYNAMIC, .p_vaddr = 0x0000d928, .p_memsz = 0x000200, },22 { .p_type = PT_NOTE, .p_vaddr = 0x00000338, .p_memsz = 0x000030, },23 { .p_type = PT_NOTE, .p_vaddr = 0x00000368, .p_memsz = 0x000044, },24 { .p_type = PT_GNU_PROPERTY, .p_vaddr = 0x00000338, .p_memsz = 0x000030, },25 { .p_type = PT_GNU_EH_FRAME, .p_vaddr = 0x0000b490, .p_memsz = 0x0001ec, },26 { .p_type = PT_GNU_STACK, .p_vaddr = 0x00000000, .p_memsz = 0x000000, },27 { .p_type = PT_GNU_RELRO, .p_vaddr = 0x0000d330, .p_memsz = 0x000cd0, },28 };29 size_t mount_size = 0xE070;30 /* https://lore.kernel.org/linux-fsdevel/YfF18Dy85mCntXrx@fractal.localdomain */31 struct elf_phdr unordered[] = {32 { .p_type = PT_LOAD, .p_vaddr = 0x00000000, .p_memsz = 0x0033a8, },33 { .p_type = PT_LOAD, .p_vaddr = 0x0000d330, .p_memsz = 0x000d40, },34 { .p_type = PT_LOAD, .p_vaddr = 0x00004000, .p_memsz = 0x005c91, },35 { .p_type = PT_LOAD, .p_vaddr = 0x0000a000, .p_memsz = 0x0022f8, },36 };37 38 /* No headers, no size. */39 KUNIT_EXPECT_EQ(test, total_mapping_size(NULL, 0), 0);40 KUNIT_EXPECT_EQ(test, total_mapping_size(empty, 0), 0);41 /* Empty headers, no size. */42 KUNIT_EXPECT_EQ(test, total_mapping_size(empty, 1), 0);43 /* No PT_LOAD headers, no size. */44 KUNIT_EXPECT_EQ(test, total_mapping_size(&empty[1], 1), 0);45 /* Empty PT_LOAD and non-PT_LOAD headers, no size. */46 KUNIT_EXPECT_EQ(test, total_mapping_size(empty, 2), 0);47 48 /* Normal set of PT_LOADS, and expected size. */49 KUNIT_EXPECT_EQ(test, total_mapping_size(mount, ARRAY_SIZE(mount)), mount_size);50 /* Unordered PT_LOADs result in same size. */51 KUNIT_EXPECT_EQ(test, total_mapping_size(unordered, ARRAY_SIZE(unordered)), mount_size);52}53 54static struct kunit_case binfmt_elf_test_cases[] = {55 KUNIT_CASE(total_mapping_size_test),56 {},57};58 59static struct kunit_suite binfmt_elf_test_suite = {60 .name = KBUILD_MODNAME,61 .test_cases = binfmt_elf_test_cases,62};63 64kunit_test_suite(binfmt_elf_test_suite);65