Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Alan Maguire | 1103 | 100.00% | 1 | 100.00% |
Total | 1103 | 1 |
// SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2024, Oracle and/or its affiliates. */ #include <test_progs.h> #include <bpf/btf.h> #include "btf_helpers.h" #include "bpf/libbpf_internal.h" struct field_data { __u32 ids[5]; const char *strs[5]; } fields[] = { { .ids = {}, .strs = {} }, { .ids = {}, .strs = { "int" } }, { .ids = {}, .strs = { "int64" } }, { .ids = { 1 }, .strs = { "" } }, { .ids = { 2, 1 }, .strs = { "" } }, { .ids = { 3, 1 }, .strs = { "s1", "f1", "f2" } }, { .ids = { 1, 5 }, .strs = { "u1", "f1", "f2" } }, { .ids = {}, .strs = { "e1", "v1", "v2" } }, { .ids = {}, .strs = { "fw1" } }, { .ids = { 1 }, .strs = { "t" } }, { .ids = { 2 }, .strs = { "" } }, { .ids = { 1 }, .strs = { "" } }, { .ids = { 3 }, .strs = { "" } }, { .ids = { 1, 1, 3 }, .strs = { "", "p1", "p2" } }, { .ids = { 13 }, .strs = { "func" } }, { .ids = { 1 }, .strs = { "var1" } }, { .ids = { 3 }, .strs = { "var2" } }, { .ids = {}, .strs = { "float" } }, { .ids = { 11 }, .strs = { "decltag" } }, { .ids = { 6 }, .strs = { "typetag" } }, { .ids = {}, .strs = { "e64", "eval1", "eval2", "eval3" } }, { .ids = { 15, 16 }, .strs = { "datasec1" } } }; /* Fabricate BTF with various types and check BTF field iteration finds types, * strings expected. */ void test_btf_field_iter(void) { struct btf *btf = NULL; int id; btf = btf__new_empty(); if (!ASSERT_OK_PTR(btf, "empty_btf")) return; btf__add_int(btf, "int", 4, BTF_INT_SIGNED); /* [1] int */ btf__add_int(btf, "int64", 8, BTF_INT_SIGNED); /* [2] int64 */ btf__add_ptr(btf, 1); /* [3] int * */ btf__add_array(btf, 1, 2, 3); /* [4] int64[3] */ btf__add_struct(btf, "s1", 12); /* [5] struct s1 { */ btf__add_field(btf, "f1", 3, 0, 0); /* int *f1; */ btf__add_field(btf, "f2", 1, 0, 0); /* int f2; */ /* } */ btf__add_union(btf, "u1", 12); /* [6] union u1 { */ btf__add_field(btf, "f1", 1, 0, 0); /* int f1; */ btf__add_field(btf, "f2", 5, 0, 0); /* struct s1 f2; */ /* } */ btf__add_enum(btf, "e1", 4); /* [7] enum e1 { */ btf__add_enum_value(btf, "v1", 1); /* v1 = 1; */ btf__add_enum_value(btf, "v2", 2); /* v2 = 2; */ /* } */ btf__add_fwd(btf, "fw1", BTF_FWD_STRUCT); /* [8] struct fw1; */ btf__add_typedef(btf, "t", 1); /* [9] typedef int t; */ btf__add_volatile(btf, 2); /* [10] volatile int64; */ btf__add_const(btf, 1); /* [11] const int; */ btf__add_restrict(btf, 3); /* [12] restrict int *; */ btf__add_func_proto(btf, 1); /* [13] int (*)(int p1, int *p2); */ btf__add_func_param(btf, "p1", 1); btf__add_func_param(btf, "p2", 3); btf__add_func(btf, "func", BTF_FUNC_GLOBAL, 13);/* [14] int func(int p1, int *p2); */ btf__add_var(btf, "var1", BTF_VAR_STATIC, 1); /* [15] static int var1; */ btf__add_var(btf, "var2", BTF_VAR_STATIC, 3); /* [16] static int *var2; */ btf__add_float(btf, "float", 4); /* [17] float; */ btf__add_decl_tag(btf, "decltag", 11, -1); /* [18] decltag const int; */ btf__add_type_tag(btf, "typetag", 6); /* [19] typetag union u1; */ btf__add_enum64(btf, "e64", 8, true); /* [20] enum { */ btf__add_enum64_value(btf, "eval1", 1000); /* eval1 = 1000, */ btf__add_enum64_value(btf, "eval2", 2000); /* eval2 = 2000, */ btf__add_enum64_value(btf, "eval3", 3000); /* eval3 = 3000 */ /* } */ btf__add_datasec(btf, "datasec1", 12); /* [21] datasec datasec1 */ btf__add_datasec_var_info(btf, 15, 0, 4); btf__add_datasec_var_info(btf, 16, 4, 8); VALIDATE_RAW_BTF( btf, "[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED", "[2] INT 'int64' size=8 bits_offset=0 nr_bits=64 encoding=SIGNED", "[3] PTR '(anon)' type_id=1", "[4] ARRAY '(anon)' type_id=2 index_type_id=1 nr_elems=3", "[5] STRUCT 's1' size=12 vlen=2\n" "\t'f1' type_id=3 bits_offset=0\n" "\t'f2' type_id=1 bits_offset=0", "[6] UNION 'u1' size=12 vlen=2\n" "\t'f1' type_id=1 bits_offset=0\n" "\t'f2' type_id=5 bits_offset=0", "[7] ENUM 'e1' encoding=UNSIGNED size=4 vlen=2\n" "\t'v1' val=1\n" "\t'v2' val=2", "[8] FWD 'fw1' fwd_kind=struct", "[9] TYPEDEF 't' type_id=1", "[10] VOLATILE '(anon)' type_id=2", "[11] CONST '(anon)' type_id=1", "[12] RESTRICT '(anon)' type_id=3", "[13] FUNC_PROTO '(anon)' ret_type_id=1 vlen=2\n" "\t'p1' type_id=1\n" "\t'p2' type_id=3", "[14] FUNC 'func' type_id=13 linkage=global", "[15] VAR 'var1' type_id=1, linkage=static", "[16] VAR 'var2' type_id=3, linkage=static", "[17] FLOAT 'float' size=4", "[18] DECL_TAG 'decltag' type_id=11 component_idx=-1", "[19] TYPE_TAG 'typetag' type_id=6", "[20] ENUM64 'e64' encoding=SIGNED size=8 vlen=3\n" "\t'eval1' val=1000\n" "\t'eval2' val=2000\n" "\t'eval3' val=3000", "[21] DATASEC 'datasec1' size=12 vlen=2\n" "\ttype_id=15 offset=0 size=4\n" "\ttype_id=16 offset=4 size=8"); for (id = 1; id < btf__type_cnt(btf); id++) { struct btf_type *t = btf_type_by_id(btf, id); struct btf_field_iter it_strs, it_ids; int str_idx = 0, id_idx = 0; __u32 *next_str, *next_id; if (!ASSERT_OK_PTR(t, "btf_type_by_id")) break; if (!ASSERT_OK(btf_field_iter_init(&it_strs, t, BTF_FIELD_ITER_STRS), "iter_init_strs")) break; if (!ASSERT_OK(btf_field_iter_init(&it_ids, t, BTF_FIELD_ITER_IDS), "iter_init_ids")) break; while ((next_str = btf_field_iter_next(&it_strs))) { const char *str = btf__str_by_offset(btf, *next_str); if (!ASSERT_OK(strcmp(fields[id].strs[str_idx], str), "field_str_match")) break; str_idx++; } /* ensure no more strings are expected */ ASSERT_EQ(fields[id].strs[str_idx], NULL, "field_str_cnt"); while ((next_id = btf_field_iter_next(&it_ids))) { if (!ASSERT_EQ(*next_id, fields[id].ids[id_idx], "field_id_match")) break; id_idx++; } /* ensure no more ids are expected */ ASSERT_EQ(fields[id].ids[id_idx], 0, "field_id_cnt"); } btf__free(btf); }
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