diff options
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/btf_write.c')
-rw-r--r-- | tools/testing/selftests/bpf/prog_tests/btf_write.c | 278 |
1 files changed, 270 insertions, 8 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/btf_write.c b/tools/testing/selftests/bpf/prog_tests/btf_write.c index 314e1e7c36df..6e36de1302fc 100644 --- a/tools/testing/selftests/bpf/prog_tests/btf_write.c +++ b/tools/testing/selftests/bpf/prog_tests/btf_write.c @@ -2,22 +2,18 @@ /* Copyright (c) 2020 Facebook */ #include <test_progs.h> #include <bpf/btf.h> +#include "btf_helpers.h" -static int duration = 0; - -void test_btf_write() { +static void gen_btf(struct btf *btf) +{ const struct btf_var_secinfo *vi; const struct btf_type *t; const struct btf_member *m; + const struct btf_enum64 *v64; const struct btf_enum *v; const struct btf_param *p; - struct btf *btf; int id, err, str_off; - btf = btf__new_empty(); - if (CHECK(IS_ERR(btf), "new_empty", "failed: %ld\n", PTR_ERR(btf))) - return; - str_off = btf__find_str(btf, "int"); ASSERT_EQ(str_off, -ENOENT, "int_str_missing_off"); @@ -39,6 +35,8 @@ void test_btf_write() { ASSERT_EQ(t->size, 4, "int_sz"); ASSERT_EQ(btf_int_encoding(t), BTF_INT_SIGNED, "int_enc"); ASSERT_EQ(btf_int_bits(t), 32, "int_bits"); + ASSERT_STREQ(btf_type_raw_dump(btf, 1), + "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED", "raw_dump"); /* invalid int size */ id = btf__add_int(btf, "bad sz int", 7, 0); @@ -59,24 +57,32 @@ void test_btf_write() { t = btf__type_by_id(btf, 2); ASSERT_EQ(btf_kind(t), BTF_KIND_PTR, "ptr_kind"); ASSERT_EQ(t->type, 1, "ptr_type"); + ASSERT_STREQ(btf_type_raw_dump(btf, 2), + "[2] PTR '(anon)' type_id=1", "raw_dump"); id = btf__add_const(btf, 5); /* points forward to restrict */ ASSERT_EQ(id, 3, "const_id"); t = btf__type_by_id(btf, 3); ASSERT_EQ(btf_kind(t), BTF_KIND_CONST, "const_kind"); ASSERT_EQ(t->type, 5, "const_type"); + ASSERT_STREQ(btf_type_raw_dump(btf, 3), + "[3] CONST '(anon)' type_id=5", "raw_dump"); id = btf__add_volatile(btf, 3); ASSERT_EQ(id, 4, "volatile_id"); t = btf__type_by_id(btf, 4); ASSERT_EQ(btf_kind(t), BTF_KIND_VOLATILE, "volatile_kind"); ASSERT_EQ(t->type, 3, "volatile_type"); + ASSERT_STREQ(btf_type_raw_dump(btf, 4), + "[4] VOLATILE '(anon)' type_id=3", "raw_dump"); id = btf__add_restrict(btf, 4); ASSERT_EQ(id, 5, "restrict_id"); t = btf__type_by_id(btf, 5); ASSERT_EQ(btf_kind(t), BTF_KIND_RESTRICT, "restrict_kind"); ASSERT_EQ(t->type, 4, "restrict_type"); + ASSERT_STREQ(btf_type_raw_dump(btf, 5), + "[5] RESTRICT '(anon)' type_id=4", "raw_dump"); /* ARRAY */ id = btf__add_array(btf, 1, 2, 10); /* int *[10] */ @@ -86,6 +92,8 @@ void test_btf_write() { ASSERT_EQ(btf_array(t)->index_type, 1, "array_index_type"); ASSERT_EQ(btf_array(t)->type, 2, "array_elem_type"); ASSERT_EQ(btf_array(t)->nelems, 10, "array_nelems"); + ASSERT_STREQ(btf_type_raw_dump(btf, 6), + "[6] ARRAY '(anon)' type_id=2 index_type_id=1 nr_elems=10", "raw_dump"); /* STRUCT */ err = btf__add_field(btf, "field", 1, 0, 0); @@ -113,6 +121,10 @@ void test_btf_write() { ASSERT_EQ(m->type, 1, "f2_type"); ASSERT_EQ(btf_member_bit_offset(t, 1), 32, "f2_bit_off"); ASSERT_EQ(btf_member_bitfield_size(t, 1), 16, "f2_bit_sz"); + ASSERT_STREQ(btf_type_raw_dump(btf, 7), + "[7] STRUCT 's1' size=8 vlen=2\n" + "\t'f1' type_id=1 bits_offset=0\n" + "\t'f2' type_id=1 bits_offset=32 bitfield_size=16", "raw_dump"); /* UNION */ id = btf__add_union(btf, "u1", 8); @@ -136,6 +148,9 @@ void test_btf_write() { ASSERT_EQ(m->type, 1, "f1_type"); ASSERT_EQ(btf_member_bit_offset(t, 0), 0, "f1_bit_off"); ASSERT_EQ(btf_member_bitfield_size(t, 0), 16, "f1_bit_sz"); + ASSERT_STREQ(btf_type_raw_dump(btf, 8), + "[8] UNION 'u1' size=8 vlen=1\n" + "\t'f1' type_id=1 bits_offset=0 bitfield_size=16", "raw_dump"); /* ENUM */ id = btf__add_enum(btf, "e1", 4); @@ -156,6 +171,10 @@ void test_btf_write() { v = btf_enum(t) + 1; ASSERT_STREQ(btf__str_by_offset(btf, v->name_off), "v2", "v2_name"); ASSERT_EQ(v->val, 2, "v2_val"); + ASSERT_STREQ(btf_type_raw_dump(btf, 9), + "[9] ENUM 'e1' encoding=UNSIGNED size=4 vlen=2\n" + "\t'v1' val=1\n" + "\t'v2' val=2", "raw_dump"); /* FWDs */ id = btf__add_fwd(btf, "struct_fwd", BTF_FWD_STRUCT); @@ -164,6 +183,8 @@ void test_btf_write() { ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "struct_fwd", "fwd_name"); ASSERT_EQ(btf_kind(t), BTF_KIND_FWD, "fwd_kind"); ASSERT_EQ(btf_kflag(t), 0, "fwd_kflag"); + ASSERT_STREQ(btf_type_raw_dump(btf, 10), + "[10] FWD 'struct_fwd' fwd_kind=struct", "raw_dump"); id = btf__add_fwd(btf, "union_fwd", BTF_FWD_UNION); ASSERT_EQ(id, 11, "union_fwd_id"); @@ -171,6 +192,8 @@ void test_btf_write() { ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "union_fwd", "fwd_name"); ASSERT_EQ(btf_kind(t), BTF_KIND_FWD, "fwd_kind"); ASSERT_EQ(btf_kflag(t), 1, "fwd_kflag"); + ASSERT_STREQ(btf_type_raw_dump(btf, 11), + "[11] FWD 'union_fwd' fwd_kind=union", "raw_dump"); id = btf__add_fwd(btf, "enum_fwd", BTF_FWD_ENUM); ASSERT_EQ(id, 12, "enum_fwd_id"); @@ -179,6 +202,8 @@ void test_btf_write() { ASSERT_EQ(btf_kind(t), BTF_KIND_ENUM, "enum_fwd_kind"); ASSERT_EQ(btf_vlen(t), 0, "enum_fwd_kind"); ASSERT_EQ(t->size, 4, "enum_fwd_sz"); + ASSERT_STREQ(btf_type_raw_dump(btf, 12), + "[12] ENUM 'enum_fwd' encoding=UNSIGNED size=4 vlen=0", "raw_dump"); /* TYPEDEF */ id = btf__add_typedef(btf, "typedef1", 1); @@ -187,6 +212,8 @@ void test_btf_write() { ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "typedef1", "typedef_name"); ASSERT_EQ(btf_kind(t), BTF_KIND_TYPEDEF, "typedef_kind"); ASSERT_EQ(t->type, 1, "typedef_type"); + ASSERT_STREQ(btf_type_raw_dump(btf, 13), + "[13] TYPEDEF 'typedef1' type_id=1", "raw_dump"); /* FUNC & FUNC_PROTO */ id = btf__add_func(btf, "func1", BTF_FUNC_GLOBAL, 15); @@ -196,6 +223,8 @@ void test_btf_write() { ASSERT_EQ(t->type, 15, "func_type"); ASSERT_EQ(btf_kind(t), BTF_KIND_FUNC, "func_kind"); ASSERT_EQ(btf_vlen(t), BTF_FUNC_GLOBAL, "func_vlen"); + ASSERT_STREQ(btf_type_raw_dump(btf, 14), + "[14] FUNC 'func1' type_id=15 linkage=global", "raw_dump"); id = btf__add_func_proto(btf, 1); ASSERT_EQ(id, 15, "func_proto_id"); @@ -214,6 +243,10 @@ void test_btf_write() { p = btf_params(t) + 1; ASSERT_STREQ(btf__str_by_offset(btf, p->name_off), "p2", "p2_name"); ASSERT_EQ(p->type, 2, "p2_type"); + ASSERT_STREQ(btf_type_raw_dump(btf, 15), + "[15] FUNC_PROTO '(anon)' ret_type_id=1 vlen=2\n" + "\t'p1' type_id=1\n" + "\t'p2' type_id=2", "raw_dump"); /* VAR */ id = btf__add_var(btf, "var1", BTF_VAR_GLOBAL_ALLOCATED, 1); @@ -223,6 +256,8 @@ void test_btf_write() { ASSERT_EQ(btf_kind(t), BTF_KIND_VAR, "var_kind"); ASSERT_EQ(t->type, 1, "var_type"); ASSERT_EQ(btf_var(t)->linkage, BTF_VAR_GLOBAL_ALLOCATED, "var_type"); + ASSERT_STREQ(btf_type_raw_dump(btf, 16), + "[16] VAR 'var1' type_id=1, linkage=global-alloc", "raw_dump"); /* DATASECT */ id = btf__add_datasec(btf, "datasec1", 12); @@ -239,6 +274,233 @@ void test_btf_write() { ASSERT_EQ(vi->type, 1, "v1_type"); ASSERT_EQ(vi->offset, 4, "v1_off"); ASSERT_EQ(vi->size, 8, "v1_sz"); + ASSERT_STREQ(btf_type_raw_dump(btf, 17), + "[17] DATASEC 'datasec1' size=12 vlen=1\n" + "\ttype_id=1 offset=4 size=8", "raw_dump"); + + /* DECL_TAG */ + id = btf__add_decl_tag(btf, "tag1", 16, -1); + ASSERT_EQ(id, 18, "tag_id"); + t = btf__type_by_id(btf, 18); + ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "tag1", "tag_value"); + ASSERT_EQ(btf_kind(t), BTF_KIND_DECL_TAG, "tag_kind"); + ASSERT_EQ(t->type, 16, "tag_type"); + ASSERT_EQ(btf_decl_tag(t)->component_idx, -1, "tag_component_idx"); + ASSERT_STREQ(btf_type_raw_dump(btf, 18), + "[18] DECL_TAG 'tag1' type_id=16 component_idx=-1", "raw_dump"); + + id = btf__add_decl_tag(btf, "tag2", 14, 1); + ASSERT_EQ(id, 19, "tag_id"); + t = btf__type_by_id(btf, 19); + ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "tag2", "tag_value"); + ASSERT_EQ(btf_kind(t), BTF_KIND_DECL_TAG, "tag_kind"); + ASSERT_EQ(t->type, 14, "tag_type"); + ASSERT_EQ(btf_decl_tag(t)->component_idx, 1, "tag_component_idx"); + ASSERT_STREQ(btf_type_raw_dump(btf, 19), + "[19] DECL_TAG 'tag2' type_id=14 component_idx=1", "raw_dump"); + + /* TYPE_TAG */ + id = btf__add_type_tag(btf, "tag1", 1); + ASSERT_EQ(id, 20, "tag_id"); + t = btf__type_by_id(btf, 20); + ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "tag1", "tag_value"); + ASSERT_EQ(btf_kind(t), BTF_KIND_TYPE_TAG, "tag_kind"); + ASSERT_EQ(t->type, 1, "tag_type"); + ASSERT_STREQ(btf_type_raw_dump(btf, 20), + "[20] TYPE_TAG 'tag1' type_id=1", "raw_dump"); + + /* ENUM64 */ + id = btf__add_enum64(btf, "e1", 8, true); + ASSERT_EQ(id, 21, "enum64_id"); + err = btf__add_enum64_value(btf, "v1", -1); + ASSERT_OK(err, "v1_res"); + err = btf__add_enum64_value(btf, "v2", 0x123456789); /* 4886718345 */ + ASSERT_OK(err, "v2_res"); + t = btf__type_by_id(btf, 21); + ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "e1", "enum64_name"); + ASSERT_EQ(btf_kind(t), BTF_KIND_ENUM64, "enum64_kind"); + ASSERT_EQ(btf_vlen(t), 2, "enum64_vlen"); + ASSERT_EQ(t->size, 8, "enum64_sz"); + v64 = btf_enum64(t) + 0; + ASSERT_STREQ(btf__str_by_offset(btf, v64->name_off), "v1", "v1_name"); + ASSERT_EQ(v64->val_hi32, 0xffffffff, "v1_val"); + ASSERT_EQ(v64->val_lo32, 0xffffffff, "v1_val"); + v64 = btf_enum64(t) + 1; + ASSERT_STREQ(btf__str_by_offset(btf, v64->name_off), "v2", "v2_name"); + ASSERT_EQ(v64->val_hi32, 0x1, "v2_val"); + ASSERT_EQ(v64->val_lo32, 0x23456789, "v2_val"); + ASSERT_STREQ(btf_type_raw_dump(btf, 21), + "[21] ENUM64 'e1' encoding=SIGNED size=8 vlen=2\n" + "\t'v1' val=-1\n" + "\t'v2' val=4886718345", "raw_dump"); + + id = btf__add_enum64(btf, "e1", 8, false); + ASSERT_EQ(id, 22, "enum64_id"); + err = btf__add_enum64_value(btf, "v1", 0xffffffffFFFFFFFF); /* 18446744073709551615 */ + ASSERT_OK(err, "v1_res"); + t = btf__type_by_id(btf, 22); + ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "e1", "enum64_name"); + ASSERT_EQ(btf_kind(t), BTF_KIND_ENUM64, "enum64_kind"); + ASSERT_EQ(btf_vlen(t), 1, "enum64_vlen"); + ASSERT_EQ(t->size, 8, "enum64_sz"); + v64 = btf_enum64(t) + 0; + ASSERT_STREQ(btf__str_by_offset(btf, v64->name_off), "v1", "v1_name"); + ASSERT_EQ(v64->val_hi32, 0xffffffff, "v1_val"); + ASSERT_EQ(v64->val_lo32, 0xffffffff, "v1_val"); + ASSERT_STREQ(btf_type_raw_dump(btf, 22), + "[22] ENUM64 'e1' encoding=UNSIGNED size=8 vlen=1\n" + "\t'v1' val=18446744073709551615", "raw_dump"); +} + +static void test_btf_add() +{ + struct btf *btf; + + btf = btf__new_empty(); + if (!ASSERT_OK_PTR(btf, "new_empty")) + return; + + gen_btf(btf); + + VALIDATE_RAW_BTF( + btf, + "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED", + "[2] PTR '(anon)' type_id=1", + "[3] CONST '(anon)' type_id=5", + "[4] VOLATILE '(anon)' type_id=3", + "[5] RESTRICT '(anon)' type_id=4", + "[6] ARRAY '(anon)' type_id=2 index_type_id=1 nr_elems=10", + "[7] STRUCT 's1' size=8 vlen=2\n" + "\t'f1' type_id=1 bits_offset=0\n" + "\t'f2' type_id=1 bits_offset=32 bitfield_size=16", + "[8] UNION 'u1' size=8 vlen=1\n" + "\t'f1' type_id=1 bits_offset=0 bitfield_size=16", + "[9] ENUM 'e1' encoding=UNSIGNED size=4 vlen=2\n" + "\t'v1' val=1\n" + "\t'v2' val=2", + "[10] FWD 'struct_fwd' fwd_kind=struct", + "[11] FWD 'union_fwd' fwd_kind=union", + "[12] ENUM 'enum_fwd' encoding=UNSIGNED size=4 vlen=0", + "[13] TYPEDEF 'typedef1' type_id=1", + "[14] FUNC 'func1' type_id=15 linkage=global", + "[15] FUNC_PROTO '(anon)' ret_type_id=1 vlen=2\n" + "\t'p1' type_id=1\n" + "\t'p2' type_id=2", + "[16] VAR 'var1' type_id=1, linkage=global-alloc", + "[17] DATASEC 'datasec1' size=12 vlen=1\n" + "\ttype_id=1 offset=4 size=8", + "[18] DECL_TAG 'tag1' type_id=16 component_idx=-1", + "[19] DECL_TAG 'tag2' type_id=14 component_idx=1", + "[20] TYPE_TAG 'tag1' type_id=1", + "[21] ENUM64 'e1' encoding=SIGNED size=8 vlen=2\n" + "\t'v1' val=-1\n" + "\t'v2' val=4886718345", + "[22] ENUM64 'e1' encoding=UNSIGNED size=8 vlen=1\n" + "\t'v1' val=18446744073709551615"); btf__free(btf); } + +static void test_btf_add_btf() +{ + struct btf *btf1 = NULL, *btf2 = NULL; + int id; + + btf1 = btf__new_empty(); + if (!ASSERT_OK_PTR(btf1, "btf1")) + return; + + btf2 = btf__new_empty(); + if (!ASSERT_OK_PTR(btf2, "btf2")) + goto cleanup; + + gen_btf(btf1); + gen_btf(btf2); + + id = btf__add_btf(btf1, btf2); + if (!ASSERT_EQ(id, 23, "id")) + goto cleanup; + + VALIDATE_RAW_BTF( + btf1, + "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED", + "[2] PTR '(anon)' type_id=1", + "[3] CONST '(anon)' type_id=5", + "[4] VOLATILE '(anon)' type_id=3", + "[5] RESTRICT '(anon)' type_id=4", + "[6] ARRAY '(anon)' type_id=2 index_type_id=1 nr_elems=10", + "[7] STRUCT 's1' size=8 vlen=2\n" + "\t'f1' type_id=1 bits_offset=0\n" + "\t'f2' type_id=1 bits_offset=32 bitfield_size=16", + "[8] UNION 'u1' size=8 vlen=1\n" + "\t'f1' type_id=1 bits_offset=0 bitfield_size=16", + "[9] ENUM 'e1' encoding=UNSIGNED size=4 vlen=2\n" + "\t'v1' val=1\n" + "\t'v2' val=2", + "[10] FWD 'struct_fwd' fwd_kind=struct", + "[11] FWD 'union_fwd' fwd_kind=union", + "[12] ENUM 'enum_fwd' encoding=UNSIGNED size=4 vlen=0", + "[13] TYPEDEF 'typedef1' type_id=1", + "[14] FUNC 'func1' type_id=15 linkage=global", + "[15] FUNC_PROTO '(anon)' ret_type_id=1 vlen=2\n" + "\t'p1' type_id=1\n" + "\t'p2' type_id=2", + "[16] VAR 'var1' type_id=1, linkage=global-alloc", + "[17] DATASEC 'datasec1' size=12 vlen=1\n" + "\ttype_id=1 offset=4 size=8", + "[18] DECL_TAG 'tag1' type_id=16 component_idx=-1", + "[19] DECL_TAG 'tag2' type_id=14 component_idx=1", + "[20] TYPE_TAG 'tag1' type_id=1", + "[21] ENUM64 'e1' encoding=SIGNED size=8 vlen=2\n" + "\t'v1' val=-1\n" + "\t'v2' val=4886718345", + "[22] ENUM64 'e1' encoding=UNSIGNED size=8 vlen=1\n" + "\t'v1' val=18446744073709551615", + + /* types appended from the second BTF */ + "[23] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED", + "[24] PTR '(anon)' type_id=23", + "[25] CONST '(anon)' type_id=27", + "[26] VOLATILE '(anon)' type_id=25", + "[27] RESTRICT '(anon)' type_id=26", + "[28] ARRAY '(anon)' type_id=24 index_type_id=23 nr_elems=10", + "[29] STRUCT 's1' size=8 vlen=2\n" + "\t'f1' type_id=23 bits_offset=0\n" + "\t'f2' type_id=23 bits_offset=32 bitfield_size=16", + "[30] UNION 'u1' size=8 vlen=1\n" + "\t'f1' type_id=23 bits_offset=0 bitfield_size=16", + "[31] ENUM 'e1' encoding=UNSIGNED size=4 vlen=2\n" + "\t'v1' val=1\n" + "\t'v2' val=2", + "[32] FWD 'struct_fwd' fwd_kind=struct", + "[33] FWD 'union_fwd' fwd_kind=union", + "[34] ENUM 'enum_fwd' encoding=UNSIGNED size=4 vlen=0", + "[35] TYPEDEF 'typedef1' type_id=23", + "[36] FUNC 'func1' type_id=37 linkage=global", + "[37] FUNC_PROTO '(anon)' ret_type_id=23 vlen=2\n" + "\t'p1' type_id=23\n" + "\t'p2' type_id=24", + "[38] VAR 'var1' type_id=23, linkage=global-alloc", + "[39] DATASEC 'datasec1' size=12 vlen=1\n" + "\ttype_id=23 offset=4 size=8", + "[40] DECL_TAG 'tag1' type_id=38 component_idx=-1", + "[41] DECL_TAG 'tag2' type_id=36 component_idx=1", + "[42] TYPE_TAG 'tag1' type_id=23", + "[43] ENUM64 'e1' encoding=SIGNED size=8 vlen=2\n" + "\t'v1' val=-1\n" + "\t'v2' val=4886718345", + "[44] ENUM64 'e1' encoding=UNSIGNED size=8 vlen=1\n" + "\t'v1' val=18446744073709551615"); + +cleanup: + btf__free(btf1); + btf__free(btf2); +} + +void test_btf_write() +{ + if (test__start_subtest("btf_add")) + test_btf_add(); + if (test__start_subtest("btf_add_btf")) + test_btf_add_btf(); +} |