diff options
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/btf_distill.c')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/btf_distill.c | 278 |
1 files changed, 278 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/btf_distill.c b/tools/testing/selftests/bpf/prog_tests/btf_distill.c index 5c3a38747962..bfbe795823a2 100644 --- a/tools/testing/selftests/bpf/prog_tests/btf_distill.c +++ b/tools/testing/selftests/bpf/prog_tests/btf_distill.c @@ -217,7 +217,277 @@ static void test_distilled_base(void) "\t'p1' type_id=1", "[25] ARRAY '(anon)' type_id=1 index_type_id=1 nr_elems=3"); + if (!ASSERT_EQ(btf__relocate(btf4, btf1), 0, "relocate_split")) + goto cleanup; + + VALIDATE_RAW_BTF( + btf4, + "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED", + "[2] PTR '(anon)' type_id=1", + "[3] STRUCT 's1' size=8 vlen=1\n" + "\t'f1' type_id=2 bits_offset=0", + "[4] STRUCT '(anon)' size=12 vlen=2\n" + "\t'f1' type_id=1 bits_offset=0\n" + "\t'f2' type_id=3 bits_offset=32", + "[5] INT 'unsigned int' size=4 bits_offset=0 nr_bits=32 encoding=(none)", + "[6] UNION 'u1' size=12 vlen=2\n" + "\t'f1' type_id=1 bits_offset=0\n" + "\t'f2' type_id=2 bits_offset=0", + "[7] UNION '(anon)' size=4 vlen=1\n" + "\t'f1' type_id=1 bits_offset=0", + "[8] ENUM 'e1' encoding=UNSIGNED size=4 vlen=1\n" + "\t'v1' val=1", + "[9] ENUM '(anon)' encoding=UNSIGNED size=4 vlen=1\n" + "\t'av1' val=2", + "[10] ENUM64 'e641' encoding=SIGNED size=8 vlen=1\n" + "\t'v1' val=1024", + "[11] ENUM64 '(anon)' encoding=SIGNED size=8 vlen=1\n" + "\t'v1' val=1025", + "[12] STRUCT 'unneeded' size=4 vlen=1\n" + "\t'f1' type_id=1 bits_offset=0", + "[13] STRUCT 'embedded' size=4 vlen=1\n" + "\t'f1' type_id=1 bits_offset=0", + "[14] FUNC_PROTO '(anon)' ret_type_id=1 vlen=1\n" + "\t'p1' type_id=1", + "[15] ARRAY '(anon)' type_id=1 index_type_id=1 nr_elems=3", + "[16] STRUCT 'from_proto' size=4 vlen=1\n" + "\t'f1' type_id=1 bits_offset=0", + "[17] UNION 'u1' size=4 vlen=1\n" + "\t'f1' type_id=1 bits_offset=0", + "[18] PTR '(anon)' type_id=3", + "[19] PTR '(anon)' type_id=30", + "[20] CONST '(anon)' type_id=6", + "[21] RESTRICT '(anon)' type_id=31", + "[22] VOLATILE '(anon)' type_id=8", + "[23] TYPEDEF 'et' type_id=32", + "[24] CONST '(anon)' type_id=10", + "[25] PTR '(anon)' type_id=33", + "[26] STRUCT 'with_embedded' size=4 vlen=1\n" + "\t'f1' type_id=13 bits_offset=0", + "[27] FUNC 'fn' type_id=34 linkage=static", + "[28] TYPEDEF 'arraytype' type_id=35", + "[29] FUNC_PROTO '(anon)' ret_type_id=1 vlen=1\n" + "\t'p1' type_id=16", + /* below here are (duplicate) anon base types added by distill + * process to split BTF. + */ + "[30] STRUCT '(anon)' size=12 vlen=2\n" + "\t'f1' type_id=1 bits_offset=0\n" + "\t'f2' type_id=3 bits_offset=32", + "[31] UNION '(anon)' size=4 vlen=1\n" + "\t'f1' type_id=1 bits_offset=0", + "[32] ENUM '(anon)' encoding=UNSIGNED size=4 vlen=1\n" + "\t'av1' val=2", + "[33] ENUM64 '(anon)' encoding=SIGNED size=8 vlen=1\n" + "\t'v1' val=1025", + "[34] FUNC_PROTO '(anon)' ret_type_id=1 vlen=1\n" + "\t'p1' type_id=1", + "[35] ARRAY '(anon)' type_id=1 index_type_id=1 nr_elems=3"); + +cleanup: + btf__free(btf4); + btf__free(btf3); + btf__free(btf2); + btf__free(btf1); +} + +/* ensure we can cope with multiple types with the same name in + * distilled base BTF. In this case because sizes are different, + * we can still disambiguate them. + */ +static void test_distilled_base_multi(void) +{ + struct btf *btf1 = NULL, *btf2 = NULL, *btf3 = NULL, *btf4 = NULL; + + btf1 = btf__new_empty(); + if (!ASSERT_OK_PTR(btf1, "empty_main_btf")) + return; + btf__add_int(btf1, "int", 4, BTF_INT_SIGNED); /* [1] int */ + btf__add_int(btf1, "int", 8, BTF_INT_SIGNED); /* [2] int */ + VALIDATE_RAW_BTF( + btf1, + "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED", + "[2] INT 'int' size=8 bits_offset=0 nr_bits=64 encoding=SIGNED"); + btf2 = btf__new_empty_split(btf1); + if (!ASSERT_OK_PTR(btf2, "empty_split_btf")) + goto cleanup; + btf__add_ptr(btf2, 1); + btf__add_const(btf2, 2); + VALIDATE_RAW_BTF( + btf2, + "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED", + "[2] INT 'int' size=8 bits_offset=0 nr_bits=64 encoding=SIGNED", + "[3] PTR '(anon)' type_id=1", + "[4] CONST '(anon)' type_id=2"); + if (!ASSERT_EQ(0, btf__distill_base(btf2, &btf3, &btf4), + "distilled_base") || + !ASSERT_OK_PTR(btf3, "distilled_base") || + !ASSERT_OK_PTR(btf4, "distilled_split") || + !ASSERT_EQ(3, btf__type_cnt(btf3), "distilled_base_type_cnt")) + goto cleanup; + VALIDATE_RAW_BTF( + btf3, + "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED", + "[2] INT 'int' size=8 bits_offset=0 nr_bits=64 encoding=SIGNED"); + if (!ASSERT_EQ(btf__relocate(btf4, btf1), 0, "relocate_split")) + goto cleanup; + + VALIDATE_RAW_BTF( + btf4, + "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED", + "[2] INT 'int' size=8 bits_offset=0 nr_bits=64 encoding=SIGNED", + "[3] PTR '(anon)' type_id=1", + "[4] CONST '(anon)' type_id=2"); + +cleanup: + btf__free(btf4); + btf__free(btf3); + btf__free(btf2); + btf__free(btf1); +} + +/* If a needed type is not present in the base BTF we wish to relocate + * with, btf__relocate() should error our. + */ +static void test_distilled_base_missing_err(void) +{ + struct btf *btf1 = NULL, *btf2 = NULL, *btf3 = NULL, *btf4 = NULL, *btf5 = NULL; + + btf1 = btf__new_empty(); + if (!ASSERT_OK_PTR(btf1, "empty_main_btf")) + return; + btf__add_int(btf1, "int", 4, BTF_INT_SIGNED); /* [1] int */ + btf__add_int(btf1, "int", 8, BTF_INT_SIGNED); /* [2] int */ + VALIDATE_RAW_BTF( + btf1, + "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED", + "[2] INT 'int' size=8 bits_offset=0 nr_bits=64 encoding=SIGNED"); + btf2 = btf__new_empty_split(btf1); + if (!ASSERT_OK_PTR(btf2, "empty_split_btf")) + goto cleanup; + btf__add_ptr(btf2, 1); + btf__add_const(btf2, 2); + VALIDATE_RAW_BTF( + btf2, + "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED", + "[2] INT 'int' size=8 bits_offset=0 nr_bits=64 encoding=SIGNED", + "[3] PTR '(anon)' type_id=1", + "[4] CONST '(anon)' type_id=2"); + if (!ASSERT_EQ(0, btf__distill_base(btf2, &btf3, &btf4), + "distilled_base") || + !ASSERT_OK_PTR(btf3, "distilled_base") || + !ASSERT_OK_PTR(btf4, "distilled_split") || + !ASSERT_EQ(3, btf__type_cnt(btf3), "distilled_base_type_cnt")) + goto cleanup; + VALIDATE_RAW_BTF( + btf3, + "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED", + "[2] INT 'int' size=8 bits_offset=0 nr_bits=64 encoding=SIGNED"); + btf5 = btf__new_empty(); + if (!ASSERT_OK_PTR(btf5, "empty_reloc_btf")) + return; + btf__add_int(btf5, "int", 4, BTF_INT_SIGNED); /* [1] int */ + VALIDATE_RAW_BTF( + btf5, + "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED"); + ASSERT_EQ(btf__relocate(btf4, btf5), -EINVAL, "relocate_split"); + +cleanup: + btf__free(btf5); + btf__free(btf4); + btf__free(btf3); + btf__free(btf2); + btf__free(btf1); +} + +/* With 2 types of same size in distilled base BTF, relocation should + * fail as we have no means to choose between them. + */ +static void test_distilled_base_multi_err(void) +{ + struct btf *btf1 = NULL, *btf2 = NULL, *btf3 = NULL, *btf4 = NULL; + + btf1 = btf__new_empty(); + if (!ASSERT_OK_PTR(btf1, "empty_main_btf")) + return; + btf__add_int(btf1, "int", 4, BTF_INT_SIGNED); /* [1] int */ + btf__add_int(btf1, "int", 4, BTF_INT_SIGNED); /* [2] int */ + VALIDATE_RAW_BTF( + btf1, + "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED", + "[2] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED"); + btf2 = btf__new_empty_split(btf1); + if (!ASSERT_OK_PTR(btf2, "empty_split_btf")) + goto cleanup; + btf__add_ptr(btf2, 1); + btf__add_const(btf2, 2); + VALIDATE_RAW_BTF( + btf2, + "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED", + "[2] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED", + "[3] PTR '(anon)' type_id=1", + "[4] CONST '(anon)' type_id=2"); + if (!ASSERT_EQ(0, btf__distill_base(btf2, &btf3, &btf4), + "distilled_base") || + !ASSERT_OK_PTR(btf3, "distilled_base") || + !ASSERT_OK_PTR(btf4, "distilled_split") || + !ASSERT_EQ(3, btf__type_cnt(btf3), "distilled_base_type_cnt")) + goto cleanup; + VALIDATE_RAW_BTF( + btf3, + "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED", + "[2] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED"); + ASSERT_EQ(btf__relocate(btf4, btf1), -EINVAL, "relocate_split"); +cleanup: + btf__free(btf4); + btf__free(btf3); + btf__free(btf2); + btf__free(btf1); +} + +/* With 2 types of same size in base BTF, relocation should + * fail as we have no means to choose between them. + */ +static void test_distilled_base_multi_err2(void) +{ + struct btf *btf1 = NULL, *btf2 = NULL, *btf3 = NULL, *btf4 = NULL, *btf5 = NULL; + + btf1 = btf__new_empty(); + if (!ASSERT_OK_PTR(btf1, "empty_main_btf")) + return; + btf__add_int(btf1, "int", 4, BTF_INT_SIGNED); /* [1] int */ + VALIDATE_RAW_BTF( + btf1, + "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED"); + btf2 = btf__new_empty_split(btf1); + if (!ASSERT_OK_PTR(btf2, "empty_split_btf")) + goto cleanup; + btf__add_ptr(btf2, 1); + VALIDATE_RAW_BTF( + btf2, + "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED", + "[2] PTR '(anon)' type_id=1"); + if (!ASSERT_EQ(0, btf__distill_base(btf2, &btf3, &btf4), + "distilled_base") || + !ASSERT_OK_PTR(btf3, "distilled_base") || + !ASSERT_OK_PTR(btf4, "distilled_split") || + !ASSERT_EQ(2, btf__type_cnt(btf3), "distilled_base_type_cnt")) + goto cleanup; + VALIDATE_RAW_BTF( + btf3, + "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED"); + btf5 = btf__new_empty(); + if (!ASSERT_OK_PTR(btf5, "empty_reloc_btf")) + return; + btf__add_int(btf5, "int", 4, BTF_INT_SIGNED); /* [1] int */ + btf__add_int(btf5, "int", 4, BTF_INT_SIGNED); /* [2] int */ + VALIDATE_RAW_BTF( + btf5, + "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED", + "[2] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED"); + ASSERT_EQ(btf__relocate(btf4, btf5), -EINVAL, "relocate_split"); cleanup: + btf__free(btf5); btf__free(btf4); btf__free(btf3); btf__free(btf2); @@ -269,6 +539,14 @@ void test_btf_distill(void) { if (test__start_subtest("distilled_base")) test_distilled_base(); + if (test__start_subtest("distilled_base_multi")) + test_distilled_base_multi(); + if (test__start_subtest("distilled_base_missing_err")) + test_distilled_base_missing_err(); + if (test__start_subtest("distilled_base_multi_err")) + test_distilled_base_multi_err(); + if (test__start_subtest("distilled_base_multi_err2")) + test_distilled_base_multi_err2(); if (test__start_subtest("distilled_base_vmlinux")) test_distilled_base_vmlinux(); } |