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selftests/bpf: Add checks for X__elf_bytes() skeleton helper

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This patch adds two checks for the X__elf_bytes BPF skeleton helper
method. The first asserts that the pointer returned from the helper
method is valid, the second asserts that the provided size pointer is
set.

Signed-off-by: Matt Smith <alastorze@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210901194439.3853238-4-alastorze@fb.com
This commit is contained in:
Matt Smith 2021-09-01 12:44:39 -07:00 committed by Andrii Nakryiko
parent a6cc6b34b9
commit 980a1a4c34
1 changed files with 6 additions and 0 deletions
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6
tools/testing/selftests/bpf/prog_tests/skeleton.c
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@ -18,6 +18,8 @@ void test_skeleton(void)
struct test_skeleton__data *data;
struct test_skeleton__rodata *rodata;
struct test_skeleton__kconfig *kcfg;
const void *elf_bytes;
size_t elf_bytes_sz = 0;
skel = test_skeleton__open();
if (CHECK(!skel, "skel_open", "failed to open skeleton\n"))
@ -91,6 +93,10 @@ void test_skeleton(void)
CHECK(bss->kern_ver != kcfg->LINUX_KERNEL_VERSION, "ext2",
"got %d != exp %d\n", bss->kern_ver, kcfg->LINUX_KERNEL_VERSION);
elf_bytes = test_skeleton__elf_bytes(&elf_bytes_sz);
ASSERT_OK_PTR(elf_bytes, "elf_bytes");
ASSERT_GE(elf_bytes_sz, 0, "elf_bytes_sz");
cleanup:
test_skeleton__destroy(skel);
}