621 lines
22 KiB
C
621 lines
22 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2024, Oracle and/or its affiliates. */
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#include <test_progs.h>
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#include <bpf/btf.h>
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#include "btf_helpers.h"
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/* Fabricate base, split BTF with references to base types needed; then create
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* split BTF with distilled base BTF and ensure expectations are met:
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* - only referenced base types from split BTF are present
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* - struct/union/enum are represented as empty unless anonymous, when they
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* are represented in full in split BTF
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*/
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static void test_distilled_base(void)
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{
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struct btf *btf1 = NULL, *btf2 = NULL, *btf3 = NULL, *btf4 = NULL;
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btf1 = btf__new_empty();
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if (!ASSERT_OK_PTR(btf1, "empty_main_btf"))
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return;
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btf__add_int(btf1, "int", 4, BTF_INT_SIGNED); /* [1] int */
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btf__add_ptr(btf1, 1); /* [2] ptr to int */
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btf__add_struct(btf1, "s1", 8); /* [3] struct s1 { */
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btf__add_field(btf1, "f1", 2, 0, 0); /* int *f1; */
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/* } */
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btf__add_struct(btf1, "", 12); /* [4] struct { */
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btf__add_field(btf1, "f1", 1, 0, 0); /* int f1; */
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btf__add_field(btf1, "f2", 3, 32, 0); /* struct s1 f2; */
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/* } */
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btf__add_int(btf1, "unsigned int", 4, 0); /* [5] unsigned int */
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btf__add_union(btf1, "u1", 12); /* [6] union u1 { */
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btf__add_field(btf1, "f1", 1, 0, 0); /* int f1; */
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btf__add_field(btf1, "f2", 2, 0, 0); /* int *f2; */
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/* } */
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btf__add_union(btf1, "", 4); /* [7] union { */
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btf__add_field(btf1, "f1", 1, 0, 0); /* int f1; */
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/* } */
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btf__add_enum(btf1, "e1", 4); /* [8] enum e1 { */
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btf__add_enum_value(btf1, "v1", 1); /* v1 = 1; */
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/* } */
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btf__add_enum(btf1, "", 4); /* [9] enum { */
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btf__add_enum_value(btf1, "av1", 2); /* av1 = 2; */
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/* } */
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btf__add_enum64(btf1, "e641", 8, true); /* [10] enum64 { */
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btf__add_enum64_value(btf1, "v1", 1024); /* v1 = 1024; */
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/* } */
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btf__add_enum64(btf1, "", 8, true); /* [11] enum64 { */
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btf__add_enum64_value(btf1, "v1", 1025); /* v1 = 1025; */
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/* } */
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btf__add_struct(btf1, "unneeded", 4); /* [12] struct unneeded { */
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btf__add_field(btf1, "f1", 1, 0, 0); /* int f1; */
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/* } */
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btf__add_struct(btf1, "embedded", 4); /* [13] struct embedded { */
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btf__add_field(btf1, "f1", 1, 0, 0); /* int f1; */
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/* } */
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btf__add_func_proto(btf1, 1); /* [14] int (*)(int *p1); */
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btf__add_func_param(btf1, "p1", 1);
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btf__add_array(btf1, 1, 1, 3); /* [15] int [3]; */
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btf__add_struct(btf1, "from_proto", 4); /* [16] struct from_proto { */
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btf__add_field(btf1, "f1", 1, 0, 0); /* int f1; */
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/* } */
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btf__add_union(btf1, "u1", 4); /* [17] union u1 { */
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btf__add_field(btf1, "f1", 1, 0, 0); /* int f1; */
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/* } */
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VALIDATE_RAW_BTF(
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btf1,
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"[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED",
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"[2] PTR '(anon)' type_id=1",
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"[3] STRUCT 's1' size=8 vlen=1\n"
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"\t'f1' type_id=2 bits_offset=0",
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"[4] STRUCT '(anon)' size=12 vlen=2\n"
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"\t'f1' type_id=1 bits_offset=0\n"
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"\t'f2' type_id=3 bits_offset=32",
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"[5] INT 'unsigned int' size=4 bits_offset=0 nr_bits=32 encoding=(none)",
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"[6] UNION 'u1' size=12 vlen=2\n"
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"\t'f1' type_id=1 bits_offset=0\n"
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"\t'f2' type_id=2 bits_offset=0",
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"[7] UNION '(anon)' size=4 vlen=1\n"
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"\t'f1' type_id=1 bits_offset=0",
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"[8] ENUM 'e1' encoding=UNSIGNED size=4 vlen=1\n"
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"\t'v1' val=1",
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"[9] ENUM '(anon)' encoding=UNSIGNED size=4 vlen=1\n"
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"\t'av1' val=2",
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"[10] ENUM64 'e641' encoding=SIGNED size=8 vlen=1\n"
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"\t'v1' val=1024",
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"[11] ENUM64 '(anon)' encoding=SIGNED size=8 vlen=1\n"
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"\t'v1' val=1025",
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"[12] STRUCT 'unneeded' size=4 vlen=1\n"
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"\t'f1' type_id=1 bits_offset=0",
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"[13] STRUCT 'embedded' size=4 vlen=1\n"
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"\t'f1' type_id=1 bits_offset=0",
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"[14] FUNC_PROTO '(anon)' ret_type_id=1 vlen=1\n"
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"\t'p1' type_id=1",
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"[15] ARRAY '(anon)' type_id=1 index_type_id=1 nr_elems=3",
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"[16] STRUCT 'from_proto' size=4 vlen=1\n"
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"\t'f1' type_id=1 bits_offset=0",
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"[17] UNION 'u1' size=4 vlen=1\n"
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"\t'f1' type_id=1 bits_offset=0");
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btf2 = btf__new_empty_split(btf1);
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if (!ASSERT_OK_PTR(btf2, "empty_split_btf"))
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goto cleanup;
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btf__add_ptr(btf2, 3); /* [18] ptr to struct s1 */
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/* add ptr to struct anon */
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btf__add_ptr(btf2, 4); /* [19] ptr to struct (anon) */
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btf__add_const(btf2, 6); /* [20] const union u1 */
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btf__add_restrict(btf2, 7); /* [21] restrict union (anon) */
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btf__add_volatile(btf2, 8); /* [22] volatile enum e1 */
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btf__add_typedef(btf2, "et", 9); /* [23] typedef enum (anon) */
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btf__add_const(btf2, 10); /* [24] const enum64 e641 */
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btf__add_ptr(btf2, 11); /* [25] restrict enum64 (anon) */
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btf__add_struct(btf2, "with_embedded", 4); /* [26] struct with_embedded { */
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btf__add_field(btf2, "f1", 13, 0, 0); /* struct embedded f1; */
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/* } */
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btf__add_func(btf2, "fn", BTF_FUNC_STATIC, 14); /* [27] int fn(int p1); */
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btf__add_typedef(btf2, "arraytype", 15); /* [28] typedef int[3] foo; */
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btf__add_func_proto(btf2, 1); /* [29] int (*)(struct from proto p1); */
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btf__add_func_param(btf2, "p1", 16);
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VALIDATE_RAW_BTF(
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btf2,
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"[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED",
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"[2] PTR '(anon)' type_id=1",
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"[3] STRUCT 's1' size=8 vlen=1\n"
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"\t'f1' type_id=2 bits_offset=0",
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"[4] STRUCT '(anon)' size=12 vlen=2\n"
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"\t'f1' type_id=1 bits_offset=0\n"
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"\t'f2' type_id=3 bits_offset=32",
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"[5] INT 'unsigned int' size=4 bits_offset=0 nr_bits=32 encoding=(none)",
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"[6] UNION 'u1' size=12 vlen=2\n"
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"\t'f1' type_id=1 bits_offset=0\n"
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"\t'f2' type_id=2 bits_offset=0",
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"[7] UNION '(anon)' size=4 vlen=1\n"
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"\t'f1' type_id=1 bits_offset=0",
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"[8] ENUM 'e1' encoding=UNSIGNED size=4 vlen=1\n"
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"\t'v1' val=1",
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"[9] ENUM '(anon)' encoding=UNSIGNED size=4 vlen=1\n"
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"\t'av1' val=2",
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"[10] ENUM64 'e641' encoding=SIGNED size=8 vlen=1\n"
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"\t'v1' val=1024",
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"[11] ENUM64 '(anon)' encoding=SIGNED size=8 vlen=1\n"
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"\t'v1' val=1025",
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"[12] STRUCT 'unneeded' size=4 vlen=1\n"
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"\t'f1' type_id=1 bits_offset=0",
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"[13] STRUCT 'embedded' size=4 vlen=1\n"
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"\t'f1' type_id=1 bits_offset=0",
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"[14] FUNC_PROTO '(anon)' ret_type_id=1 vlen=1\n"
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"\t'p1' type_id=1",
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"[15] ARRAY '(anon)' type_id=1 index_type_id=1 nr_elems=3",
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"[16] STRUCT 'from_proto' size=4 vlen=1\n"
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"\t'f1' type_id=1 bits_offset=0",
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"[17] UNION 'u1' size=4 vlen=1\n"
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"\t'f1' type_id=1 bits_offset=0",
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"[18] PTR '(anon)' type_id=3",
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"[19] PTR '(anon)' type_id=4",
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"[20] CONST '(anon)' type_id=6",
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"[21] RESTRICT '(anon)' type_id=7",
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"[22] VOLATILE '(anon)' type_id=8",
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"[23] TYPEDEF 'et' type_id=9",
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"[24] CONST '(anon)' type_id=10",
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"[25] PTR '(anon)' type_id=11",
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"[26] STRUCT 'with_embedded' size=4 vlen=1\n"
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"\t'f1' type_id=13 bits_offset=0",
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"[27] FUNC 'fn' type_id=14 linkage=static",
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"[28] TYPEDEF 'arraytype' type_id=15",
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"[29] FUNC_PROTO '(anon)' ret_type_id=1 vlen=1\n"
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"\t'p1' type_id=16");
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if (!ASSERT_EQ(0, btf__distill_base(btf2, &btf3, &btf4),
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"distilled_base") ||
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!ASSERT_OK_PTR(btf3, "distilled_base") ||
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!ASSERT_OK_PTR(btf4, "distilled_split") ||
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!ASSERT_EQ(8, btf__type_cnt(btf3), "distilled_base_type_cnt"))
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goto cleanup;
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VALIDATE_RAW_BTF(
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btf4,
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"[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED",
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"[2] STRUCT 's1' size=8 vlen=0",
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"[3] UNION 'u1' size=12 vlen=0",
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"[4] ENUM 'e1' encoding=UNSIGNED size=4 vlen=0",
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"[5] ENUM 'e641' encoding=UNSIGNED size=8 vlen=0",
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"[6] STRUCT 'embedded' size=4 vlen=0",
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"[7] STRUCT 'from_proto' size=4 vlen=0",
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/* split BTF; these types should match split BTF above from 17-28, with
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* updated type id references
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*/
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"[8] PTR '(anon)' type_id=2",
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"[9] PTR '(anon)' type_id=20",
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"[10] CONST '(anon)' type_id=3",
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"[11] RESTRICT '(anon)' type_id=21",
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"[12] VOLATILE '(anon)' type_id=4",
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"[13] TYPEDEF 'et' type_id=22",
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"[14] CONST '(anon)' type_id=5",
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"[15] PTR '(anon)' type_id=23",
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"[16] STRUCT 'with_embedded' size=4 vlen=1\n"
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"\t'f1' type_id=6 bits_offset=0",
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"[17] FUNC 'fn' type_id=24 linkage=static",
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"[18] TYPEDEF 'arraytype' type_id=25",
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"[19] FUNC_PROTO '(anon)' ret_type_id=1 vlen=1\n"
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"\t'p1' type_id=7",
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/* split BTF types added from original base BTF below */
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"[20] STRUCT '(anon)' size=12 vlen=2\n"
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"\t'f1' type_id=1 bits_offset=0\n"
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"\t'f2' type_id=2 bits_offset=32",
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"[21] UNION '(anon)' size=4 vlen=1\n"
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"\t'f1' type_id=1 bits_offset=0",
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"[22] ENUM '(anon)' encoding=UNSIGNED size=4 vlen=1\n"
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"\t'av1' val=2",
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"[23] ENUM64 '(anon)' encoding=SIGNED size=8 vlen=1\n"
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"\t'v1' val=1025",
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"[24] FUNC_PROTO '(anon)' ret_type_id=1 vlen=1\n"
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"\t'p1' type_id=1",
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"[25] ARRAY '(anon)' type_id=1 index_type_id=1 nr_elems=3");
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if (!ASSERT_EQ(btf__relocate(btf4, btf1), 0, "relocate_split"))
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goto cleanup;
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VALIDATE_RAW_BTF(
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btf4,
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"[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED",
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"[2] PTR '(anon)' type_id=1",
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"[3] STRUCT 's1' size=8 vlen=1\n"
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"\t'f1' type_id=2 bits_offset=0",
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"[4] STRUCT '(anon)' size=12 vlen=2\n"
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"\t'f1' type_id=1 bits_offset=0\n"
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"\t'f2' type_id=3 bits_offset=32",
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"[5] INT 'unsigned int' size=4 bits_offset=0 nr_bits=32 encoding=(none)",
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"[6] UNION 'u1' size=12 vlen=2\n"
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"\t'f1' type_id=1 bits_offset=0\n"
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"\t'f2' type_id=2 bits_offset=0",
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"[7] UNION '(anon)' size=4 vlen=1\n"
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"\t'f1' type_id=1 bits_offset=0",
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"[8] ENUM 'e1' encoding=UNSIGNED size=4 vlen=1\n"
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"\t'v1' val=1",
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"[9] ENUM '(anon)' encoding=UNSIGNED size=4 vlen=1\n"
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"\t'av1' val=2",
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"[10] ENUM64 'e641' encoding=SIGNED size=8 vlen=1\n"
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"\t'v1' val=1024",
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"[11] ENUM64 '(anon)' encoding=SIGNED size=8 vlen=1\n"
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"\t'v1' val=1025",
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"[12] STRUCT 'unneeded' size=4 vlen=1\n"
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"\t'f1' type_id=1 bits_offset=0",
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"[13] STRUCT 'embedded' size=4 vlen=1\n"
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"\t'f1' type_id=1 bits_offset=0",
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"[14] FUNC_PROTO '(anon)' ret_type_id=1 vlen=1\n"
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"\t'p1' type_id=1",
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"[15] ARRAY '(anon)' type_id=1 index_type_id=1 nr_elems=3",
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"[16] STRUCT 'from_proto' size=4 vlen=1\n"
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"\t'f1' type_id=1 bits_offset=0",
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"[17] UNION 'u1' size=4 vlen=1\n"
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"\t'f1' type_id=1 bits_offset=0",
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"[18] PTR '(anon)' type_id=3",
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"[19] PTR '(anon)' type_id=30",
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"[20] CONST '(anon)' type_id=6",
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"[21] RESTRICT '(anon)' type_id=31",
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"[22] VOLATILE '(anon)' type_id=8",
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"[23] TYPEDEF 'et' type_id=32",
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"[24] CONST '(anon)' type_id=10",
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"[25] PTR '(anon)' type_id=33",
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"[26] STRUCT 'with_embedded' size=4 vlen=1\n"
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"\t'f1' type_id=13 bits_offset=0",
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"[27] FUNC 'fn' type_id=34 linkage=static",
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"[28] TYPEDEF 'arraytype' type_id=35",
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"[29] FUNC_PROTO '(anon)' ret_type_id=1 vlen=1\n"
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"\t'p1' type_id=16",
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/* below here are (duplicate) anon base types added by distill
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* process to split BTF.
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*/
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"[30] STRUCT '(anon)' size=12 vlen=2\n"
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"\t'f1' type_id=1 bits_offset=0\n"
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"\t'f2' type_id=3 bits_offset=32",
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"[31] UNION '(anon)' size=4 vlen=1\n"
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"\t'f1' type_id=1 bits_offset=0",
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"[32] ENUM '(anon)' encoding=UNSIGNED size=4 vlen=1\n"
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"\t'av1' val=2",
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"[33] ENUM64 '(anon)' encoding=SIGNED size=8 vlen=1\n"
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"\t'v1' val=1025",
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"[34] FUNC_PROTO '(anon)' ret_type_id=1 vlen=1\n"
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"\t'p1' type_id=1",
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"[35] ARRAY '(anon)' type_id=1 index_type_id=1 nr_elems=3");
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cleanup:
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btf__free(btf4);
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btf__free(btf3);
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btf__free(btf2);
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btf__free(btf1);
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}
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/* ensure we can cope with multiple types with the same name in
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* distilled base BTF. In this case because sizes are different,
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* we can still disambiguate them.
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*/
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static void test_distilled_base_multi(void)
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{
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struct btf *btf1 = NULL, *btf2 = NULL, *btf3 = NULL, *btf4 = NULL;
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btf1 = btf__new_empty();
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if (!ASSERT_OK_PTR(btf1, "empty_main_btf"))
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return;
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btf__add_int(btf1, "int", 4, BTF_INT_SIGNED); /* [1] int */
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btf__add_int(btf1, "int", 8, BTF_INT_SIGNED); /* [2] int */
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VALIDATE_RAW_BTF(
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btf1,
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"[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED",
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"[2] INT 'int' size=8 bits_offset=0 nr_bits=64 encoding=SIGNED");
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btf2 = btf__new_empty_split(btf1);
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if (!ASSERT_OK_PTR(btf2, "empty_split_btf"))
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goto cleanup;
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btf__add_ptr(btf2, 1);
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btf__add_const(btf2, 2);
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VALIDATE_RAW_BTF(
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btf2,
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"[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED",
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"[2] INT 'int' size=8 bits_offset=0 nr_bits=64 encoding=SIGNED",
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"[3] PTR '(anon)' type_id=1",
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"[4] CONST '(anon)' type_id=2");
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if (!ASSERT_EQ(0, btf__distill_base(btf2, &btf3, &btf4),
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"distilled_base") ||
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!ASSERT_OK_PTR(btf3, "distilled_base") ||
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!ASSERT_OK_PTR(btf4, "distilled_split") ||
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!ASSERT_EQ(3, btf__type_cnt(btf3), "distilled_base_type_cnt"))
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goto cleanup;
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VALIDATE_RAW_BTF(
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btf3,
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"[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED",
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"[2] INT 'int' size=8 bits_offset=0 nr_bits=64 encoding=SIGNED");
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if (!ASSERT_EQ(btf__relocate(btf4, btf1), 0, "relocate_split"))
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goto cleanup;
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VALIDATE_RAW_BTF(
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btf4,
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"[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);
|
|
btf__free(btf1);
|
|
}
|
|
|
|
/* create split reference BTF from vmlinux + split BTF with a few type references;
|
|
* ensure the resultant split reference BTF is as expected, containing only types
|
|
* needed to disambiguate references from split BTF.
|
|
*/
|
|
static void test_distilled_base_vmlinux(void)
|
|
{
|
|
struct btf *split_btf = NULL, *vmlinux_btf = btf__load_vmlinux_btf();
|
|
struct btf *split_dist = NULL, *base_dist = NULL;
|
|
__s32 int_id, myint_id;
|
|
|
|
if (!ASSERT_OK_PTR(vmlinux_btf, "load_vmlinux"))
|
|
return;
|
|
int_id = btf__find_by_name_kind(vmlinux_btf, "int", BTF_KIND_INT);
|
|
if (!ASSERT_GT(int_id, 0, "find_int"))
|
|
goto cleanup;
|
|
split_btf = btf__new_empty_split(vmlinux_btf);
|
|
if (!ASSERT_OK_PTR(split_btf, "new_split"))
|
|
goto cleanup;
|
|
myint_id = btf__add_typedef(split_btf, "myint", int_id);
|
|
btf__add_ptr(split_btf, myint_id);
|
|
|
|
if (!ASSERT_EQ(btf__distill_base(split_btf, &base_dist, &split_dist), 0,
|
|
"distill_vmlinux_base"))
|
|
goto cleanup;
|
|
|
|
if (!ASSERT_OK_PTR(split_dist, "split_distilled") ||
|
|
!ASSERT_OK_PTR(base_dist, "base_dist"))
|
|
goto cleanup;
|
|
VALIDATE_RAW_BTF(
|
|
split_dist,
|
|
"[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED",
|
|
"[2] TYPEDEF 'myint' type_id=1",
|
|
"[3] PTR '(anon)' type_id=2");
|
|
|
|
cleanup:
|
|
btf__free(split_dist);
|
|
btf__free(base_dist);
|
|
btf__free(split_btf);
|
|
btf__free(vmlinux_btf);
|
|
}
|
|
|
|
/* Split and new base BTFs should inherit endianness from source BTF. */
|
|
static void test_distilled_endianness(void)
|
|
{
|
|
struct btf *base = NULL, *split = NULL, *new_base = NULL, *new_split = NULL;
|
|
struct btf *new_base1 = NULL, *new_split1 = NULL;
|
|
enum btf_endianness inverse_endianness;
|
|
const void *raw_data;
|
|
__u32 size;
|
|
|
|
base = btf__new_empty();
|
|
if (!ASSERT_OK_PTR(base, "empty_main_btf"))
|
|
return;
|
|
inverse_endianness = btf__endianness(base) == BTF_LITTLE_ENDIAN ? BTF_BIG_ENDIAN
|
|
: BTF_LITTLE_ENDIAN;
|
|
btf__set_endianness(base, inverse_endianness);
|
|
btf__add_int(base, "int", 4, BTF_INT_SIGNED); /* [1] int */
|
|
VALIDATE_RAW_BTF(
|
|
base,
|
|
"[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED");
|
|
split = btf__new_empty_split(base);
|
|
if (!ASSERT_OK_PTR(split, "empty_split_btf"))
|
|
goto cleanup;
|
|
btf__add_ptr(split, 1);
|
|
VALIDATE_RAW_BTF(
|
|
split,
|
|
"[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(split, &new_base, &new_split),
|
|
"distilled_base") ||
|
|
!ASSERT_OK_PTR(new_base, "distilled_base") ||
|
|
!ASSERT_OK_PTR(new_split, "distilled_split") ||
|
|
!ASSERT_EQ(2, btf__type_cnt(new_base), "distilled_base_type_cnt"))
|
|
goto cleanup;
|
|
VALIDATE_RAW_BTF(
|
|
new_split,
|
|
"[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED",
|
|
"[2] PTR '(anon)' type_id=1");
|
|
|
|
raw_data = btf__raw_data(new_base, &size);
|
|
if (!ASSERT_OK_PTR(raw_data, "btf__raw_data #1"))
|
|
goto cleanup;
|
|
new_base1 = btf__new(raw_data, size);
|
|
if (!ASSERT_OK_PTR(new_base1, "new_base1 = btf__new()"))
|
|
goto cleanup;
|
|
raw_data = btf__raw_data(new_split, &size);
|
|
if (!ASSERT_OK_PTR(raw_data, "btf__raw_data #2"))
|
|
goto cleanup;
|
|
new_split1 = btf__new_split(raw_data, size, new_base1);
|
|
if (!ASSERT_OK_PTR(new_split1, "new_split1 = btf__new()"))
|
|
goto cleanup;
|
|
|
|
ASSERT_EQ(btf__endianness(new_base1), inverse_endianness, "new_base1 endianness");
|
|
ASSERT_EQ(btf__endianness(new_split1), inverse_endianness, "new_split1 endianness");
|
|
VALIDATE_RAW_BTF(
|
|
new_split1,
|
|
"[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED",
|
|
"[2] PTR '(anon)' type_id=1");
|
|
cleanup:
|
|
btf__free(new_split1);
|
|
btf__free(new_base1);
|
|
btf__free(new_split);
|
|
btf__free(new_base);
|
|
btf__free(split);
|
|
btf__free(base);
|
|
}
|
|
|
|
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();
|
|
if (test__start_subtest("distilled_endianness"))
|
|
test_distilled_endianness();
|
|
}
|