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// SPDX-License-Identifier: GPL-2.0-only
#include <kunit/test.h>
static void total_mapping_size_test(struct kunit *test)
{
struct elf_phdr empty[] = {
{ .p_type = PT_LOAD, .p_vaddr = 0, .p_memsz = 0, },
{ .p_type = PT_INTERP, .p_vaddr = 10, .p_memsz = 999999, },
};
/*
* readelf -lW /bin/mount | grep '^ .*0x0' | awk '{print "\t\t{ .p_type = PT_" \
* $1 ", .p_vaddr = " $3 ", .p_memsz = " $6 ", },"}'
*/
struct elf_phdr mount[] = {
{ .p_type = PT_PHDR, .p_vaddr = 0x00000040, .p_memsz = 0x0002d8, },
{ .p_type = PT_INTERP, .p_vaddr = 0x00000318, .p_memsz = 0x00001c, },
{ .p_type = PT_LOAD, .p_vaddr = 0x00000000, .p_memsz = 0x0033a8, },
{ .p_type = PT_LOAD, .p_vaddr = 0x00004000, .p_memsz = 0x005c91, },
{ .p_type = PT_LOAD, .p_vaddr = 0x0000a000, .p_memsz = 0x0022f8, },
{ .p_type = PT_LOAD, .p_vaddr = 0x0000d330, .p_memsz = 0x000d40, },
{ .p_type = PT_DYNAMIC, .p_vaddr = 0x0000d928, .p_memsz = 0x000200, },
{ .p_type = PT_NOTE, .p_vaddr = 0x00000338, .p_memsz = 0x000030, },
{ .p_type = PT_NOTE, .p_vaddr = 0x00000368, .p_memsz = 0x000044, },
{ .p_type = PT_GNU_PROPERTY, .p_vaddr = 0x00000338, .p_memsz = 0x000030, },
{ .p_type = PT_GNU_EH_FRAME, .p_vaddr = 0x0000b490, .p_memsz = 0x0001ec, },
{ .p_type = PT_GNU_STACK, .p_vaddr = 0x00000000, .p_memsz = 0x000000, },
{ .p_type = PT_GNU_RELRO, .p_vaddr = 0x0000d330, .p_memsz = 0x000cd0, },
};
size_t mount_size = 0xE070;
/* https://lore.kernel.org/linux-fsdevel/YfF18Dy85mCntXrx@fractal.localdomain */
struct elf_phdr unordered[] = {
{ .p_type = PT_LOAD, .p_vaddr = 0x00000000, .p_memsz = 0x0033a8, },
{ .p_type = PT_LOAD, .p_vaddr = 0x0000d330, .p_memsz = 0x000d40, },
{ .p_type = PT_LOAD, .p_vaddr = 0x00004000, .p_memsz = 0x005c91, },
{ .p_type = PT_LOAD, .p_vaddr = 0x0000a000, .p_memsz = 0x0022f8, },
};
/* No headers, no size. */
KUNIT_EXPECT_EQ(test, total_mapping_size(NULL, 0), 0);
KUNIT_EXPECT_EQ(test, total_mapping_size(empty, 0), 0);
/* Empty headers, no size. */
KUNIT_EXPECT_EQ(test, total_mapping_size(empty, 1), 0);
/* No PT_LOAD headers, no size. */
KUNIT_EXPECT_EQ(test, total_mapping_size(&empty[1], 1), 0);
/* Empty PT_LOAD and non-PT_LOAD headers, no size. */
KUNIT_EXPECT_EQ(test, total_mapping_size(empty, 2), 0);
/* Normal set of PT_LOADS, and expected size. */
KUNIT_EXPECT_EQ(test, total_mapping_size(mount, ARRAY_SIZE(mount)), mount_size);
/* Unordered PT_LOADs result in same size. */
KUNIT_EXPECT_EQ(test, total_mapping_size(unordered, ARRAY_SIZE(unordered)), mount_size);
}
static struct kunit_case binfmt_elf_test_cases[] = {
KUNIT_CASE(total_mapping_size_test),
{},
};
static struct kunit_suite binfmt_elf_test_suite = {
.name = KBUILD_MODNAME,
.test_cases = binfmt_elf_test_cases,
};
kunit_test_suite(binfmt_elf_test_suite);
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