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linux/tools/testing/selftests/bpf/test_btf.c

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/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2018 Facebook */
#include <linux/bpf.h>
#include <linux/btf.h>
#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/filter.h>
#include <linux/unistd.h>
#include <bpf/bpf.h>
#include <sys/resource.h>
#include <libelf.h>
#include <gelf.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <bpf/libbpf.h>
#include <bpf/btf.h>
#include "bpf_rlimit.h"
#include "bpf_util.h"
#define MAX_INSNS 512
#define MAX_SUBPROGS 16
static uint32_t pass_cnt;
static uint32_t error_cnt;
static uint32_t skip_cnt;
#define CHECK(condition, format...) ({ \
int __ret = !!(condition); \
if (__ret) { \
fprintf(stderr, "%s:%d:FAIL ", __func__, __LINE__); \
fprintf(stderr, format); \
} \
__ret; \
})
static int count_result(int err)
{
if (err)
error_cnt++;
else
pass_cnt++;
fprintf(stderr, "\n");
return err;
}
#define __printf(a, b) __attribute__((format(printf, a, b)))
__printf(1, 2)
static int __base_pr(const char *format, ...)
{
va_list args;
int err;
va_start(args, format);
err = vfprintf(stderr, format, args);
va_end(args);
return err;
}
#define BTF_INFO_ENC(kind, kind_flag, vlen) \
((!!(kind_flag) << 31) | ((kind) << 24) | ((vlen) & BTF_MAX_VLEN))
#define BTF_TYPE_ENC(name, info, size_or_type) \
(name), (info), (size_or_type)
#define BTF_INT_ENC(encoding, bits_offset, nr_bits) \
((encoding) << 24 | (bits_offset) << 16 | (nr_bits))
#define BTF_TYPE_INT_ENC(name, encoding, bits_offset, bits, sz) \
BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_INT, 0, 0), sz), \
BTF_INT_ENC(encoding, bits_offset, bits)
#define BTF_ARRAY_ENC(type, index_type, nr_elems) \
(type), (index_type), (nr_elems)
#define BTF_TYPE_ARRAY_ENC(type, index_type, nr_elems) \
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ARRAY, 0, 0), 0), \
BTF_ARRAY_ENC(type, index_type, nr_elems)
#define BTF_MEMBER_ENC(name, type, bits_offset) \
(name), (type), (bits_offset)
#define BTF_ENUM_ENC(name, val) (name), (val)
#define BTF_MEMBER_OFFSET(bitfield_size, bits_offset) \
((bitfield_size) << 24 | (bits_offset))
#define BTF_TYPEDEF_ENC(name, type) \
BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_TYPEDEF, 0, 0), type)
#define BTF_PTR_ENC(type) \
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), type)
#define BTF_CONST_ENC(type) \
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), type)
#define BTF_FUNC_PROTO_ENC(ret_type, nargs) \
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_FUNC_PROTO, 0, nargs), ret_type)
#define BTF_FUNC_PROTO_ARG_ENC(name, type) \
(name), (type)
#define BTF_FUNC_ENC(name, func_proto) \
BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_FUNC, 0, 0), func_proto)
#define BTF_END_RAW 0xdeadbeef
#define NAME_TBD 0xdeadb33f
#define MAX_NR_RAW_U32 1024
#define BTF_LOG_BUF_SIZE 65535
static struct args {
unsigned int raw_test_num;
unsigned int file_test_num;
unsigned int get_info_test_num;
unsigned int info_raw_test_num;
bool raw_test;
bool file_test;
bool get_info_test;
bool pprint_test;
bool always_log;
bool info_raw_test;
} args;
static char btf_log_buf[BTF_LOG_BUF_SIZE];
static struct btf_header hdr_tmpl = {
.magic = BTF_MAGIC,
.version = BTF_VERSION,
.hdr_len = sizeof(struct btf_header),
};
struct btf_raw_test {
const char *descr;
const char *str_sec;
const char *map_name;
const char *err_str;
__u32 raw_types[MAX_NR_RAW_U32];
__u32 str_sec_size;
enum bpf_map_type map_type;
__u32 key_size;
__u32 value_size;
__u32 key_type_id;
__u32 value_type_id;
__u32 max_entries;
bool btf_load_err;
bool map_create_err;
bool ordered_map;
bool lossless_map;
bool percpu_map;
int hdr_len_delta;
int type_off_delta;
int str_off_delta;
int str_len_delta;
};
#define BTF_STR_SEC(str) \
.str_sec = str, .str_sec_size = sizeof(str)
static struct btf_raw_test raw_tests[] = {
/* enum E {
* E0,
* E1,
* };
*
* struct A {
* unsigned long long m;
* int n;
* char o;
* [3 bytes hole]
* int p[8];
* int q[4][8];
* enum E r;
* };
*/
{
.descr = "struct test #1",
.raw_types = {
/* int */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
/* unsigned long long */
BTF_TYPE_INT_ENC(0, 0, 0, 64, 8), /* [2] */
/* char */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 8, 1), /* [3] */
/* int[8] */
BTF_TYPE_ARRAY_ENC(1, 1, 8), /* [4] */
/* struct A { */ /* [5] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 6), 180),
BTF_MEMBER_ENC(NAME_TBD, 2, 0), /* unsigned long long m;*/
BTF_MEMBER_ENC(NAME_TBD, 1, 64),/* int n; */
BTF_MEMBER_ENC(NAME_TBD, 3, 96),/* char o; */
BTF_MEMBER_ENC(NAME_TBD, 4, 128),/* int p[8] */
BTF_MEMBER_ENC(NAME_TBD, 6, 384),/* int q[4][8] */
BTF_MEMBER_ENC(NAME_TBD, 7, 1408), /* enum E r */
/* } */
/* int[4][8] */
BTF_TYPE_ARRAY_ENC(4, 1, 4), /* [6] */
/* enum E */ /* [7] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_ENUM, 0, 2), sizeof(int)),
BTF_ENUM_ENC(NAME_TBD, 0),
BTF_ENUM_ENC(NAME_TBD, 1),
BTF_END_RAW,
},
.str_sec = "\0A\0m\0n\0o\0p\0q\0r\0E\0E0\0E1",
.str_sec_size = sizeof("\0A\0m\0n\0o\0p\0q\0r\0E\0E0\0E1"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "struct_test1_map",
.key_size = sizeof(int),
.value_size = 180,
.key_type_id = 1,
.value_type_id = 5,
.max_entries = 4,
},
/* typedef struct b Struct_B;
*
* struct A {
* int m;
* struct b n[4];
* const Struct_B o[4];
* };
*
* struct B {
* int m;
* int n;
* };
*/
{
.descr = "struct test #2",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* struct b [4] */ /* [2] */
BTF_TYPE_ARRAY_ENC(4, 1, 4),
/* struct A { */ /* [3] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 3), 68),
BTF_MEMBER_ENC(NAME_TBD, 1, 0), /* int m; */
BTF_MEMBER_ENC(NAME_TBD, 2, 32),/* struct B n[4] */
BTF_MEMBER_ENC(NAME_TBD, 8, 288),/* const Struct_B o[4];*/
/* } */
/* struct B { */ /* [4] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 2), 8),
BTF_MEMBER_ENC(NAME_TBD, 1, 0), /* int m; */
BTF_MEMBER_ENC(NAME_TBD, 1, 32),/* int n; */
/* } */
/* const int */ /* [5] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 1),
/* typedef struct b Struct_B */ /* [6] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_TYPEDEF, 0, 0), 4),
/* const Struct_B */ /* [7] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 6),
/* const Struct_B [4] */ /* [8] */
BTF_TYPE_ARRAY_ENC(7, 1, 4),
BTF_END_RAW,
},
.str_sec = "\0A\0m\0n\0o\0B\0m\0n\0Struct_B",
.str_sec_size = sizeof("\0A\0m\0n\0o\0B\0m\0n\0Struct_B"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "struct_test2_map",
.key_size = sizeof(int),
.value_size = 68,
.key_type_id = 1,
.value_type_id = 3,
.max_entries = 4,
},
{
.descr = "struct test #3 Invalid member offset",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* int64 */ /* [2] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 64, 8),
/* struct A { */ /* [3] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 2), 16),
BTF_MEMBER_ENC(NAME_TBD, 1, 64), /* int m; */
BTF_MEMBER_ENC(NAME_TBD, 2, 0), /* int64 n; */
/* } */
BTF_END_RAW,
},
.str_sec = "\0A\0m\0n\0",
.str_sec_size = sizeof("\0A\0m\0n\0"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "struct_test3_map",
.key_size = sizeof(int),
.value_size = 16,
.key_type_id = 1,
.value_type_id = 3,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid member bits_offset",
},
/* Test member exceeds the size of struct.
*
* struct A {
* int m;
* int n;
* };
*/
{
.descr = "size check test #1",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* struct A { */ /* [2] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 2), sizeof(int) * 2 - 1),
BTF_MEMBER_ENC(NAME_TBD, 1, 0), /* int m; */
BTF_MEMBER_ENC(NAME_TBD, 1, 32),/* int n; */
/* } */
BTF_END_RAW,
},
.str_sec = "\0A\0m\0n",
.str_sec_size = sizeof("\0A\0m\0n"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "size_check1_map",
.key_size = sizeof(int),
.value_size = 1,
.key_type_id = 1,
.value_type_id = 2,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Member exceeds struct_size",
},
/* Test member exeeds the size of struct
*
* struct A {
* int m;
* int n[2];
* };
*/
{
.descr = "size check test #2",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, sizeof(int)),
/* int[2] */ /* [2] */
BTF_TYPE_ARRAY_ENC(1, 1, 2),
/* struct A { */ /* [3] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 2), sizeof(int) * 3 - 1),
BTF_MEMBER_ENC(NAME_TBD, 1, 0), /* int m; */
BTF_MEMBER_ENC(NAME_TBD, 2, 32),/* int n[2]; */
/* } */
BTF_END_RAW,
},
.str_sec = "\0A\0m\0n",
.str_sec_size = sizeof("\0A\0m\0n"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "size_check2_map",
.key_size = sizeof(int),
.value_size = 1,
.key_type_id = 1,
.value_type_id = 3,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Member exceeds struct_size",
},
/* Test member exeeds the size of struct
*
* struct A {
* int m;
* void *n;
* };
*/
{
.descr = "size check test #3",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, sizeof(int)),
/* void* */ /* [2] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 0),
/* struct A { */ /* [3] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 2), sizeof(int) + sizeof(void *) - 1),
BTF_MEMBER_ENC(NAME_TBD, 1, 0), /* int m; */
BTF_MEMBER_ENC(NAME_TBD, 2, 32),/* void *n; */
/* } */
BTF_END_RAW,
},
.str_sec = "\0A\0m\0n",
.str_sec_size = sizeof("\0A\0m\0n"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "size_check3_map",
.key_size = sizeof(int),
.value_size = 1,
.key_type_id = 1,
.value_type_id = 3,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Member exceeds struct_size",
},
/* Test member exceeds the size of struct
*
* enum E {
* E0,
* E1,
* };
*
* struct A {
* int m;
* enum E n;
* };
*/
{
.descr = "size check test #4",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, sizeof(int)),
/* enum E { */ /* [2] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_ENUM, 0, 2), sizeof(int)),
BTF_ENUM_ENC(NAME_TBD, 0),
BTF_ENUM_ENC(NAME_TBD, 1),
/* } */
/* struct A { */ /* [3] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 2), sizeof(int) * 2 - 1),
BTF_MEMBER_ENC(NAME_TBD, 1, 0), /* int m; */
BTF_MEMBER_ENC(NAME_TBD, 2, 32),/* enum E n; */
/* } */
BTF_END_RAW,
},
.str_sec = "\0E\0E0\0E1\0A\0m\0n",
.str_sec_size = sizeof("\0E\0E0\0E1\0A\0m\0n"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "size_check4_map",
.key_size = sizeof(int),
.value_size = 1,
.key_type_id = 1,
.value_type_id = 3,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Member exceeds struct_size",
},
/* typedef const void * const_void_ptr;
* struct A {
* const_void_ptr m;
* };
*/
{
.descr = "void test #1",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* const void */ /* [2] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 0),
/* const void* */ /* [3] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 2),
/* typedef const void * const_void_ptr */
BTF_TYPEDEF_ENC(NAME_TBD, 3), /* [4] */
/* struct A { */ /* [5] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 1), sizeof(void *)),
/* const_void_ptr m; */
BTF_MEMBER_ENC(NAME_TBD, 4, 0),
/* } */
BTF_END_RAW,
},
.str_sec = "\0const_void_ptr\0A\0m",
.str_sec_size = sizeof("\0const_void_ptr\0A\0m"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "void_test1_map",
.key_size = sizeof(int),
.value_size = sizeof(void *),
.key_type_id = 1,
.value_type_id = 4,
.max_entries = 4,
},
/* struct A {
* const void m;
* };
*/
{
.descr = "void test #2",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* const void */ /* [2] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 0),
/* struct A { */ /* [3] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 1), 8),
/* const void m; */
BTF_MEMBER_ENC(NAME_TBD, 2, 0),
/* } */
BTF_END_RAW,
},
.str_sec = "\0A\0m",
.str_sec_size = sizeof("\0A\0m"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "void_test2_map",
.key_size = sizeof(int),
.value_size = sizeof(void *),
.key_type_id = 1,
.value_type_id = 3,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid member",
},
/* typedef const void * const_void_ptr;
* const_void_ptr[4]
*/
{
.descr = "void test #3",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* const void */ /* [2] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 0),
/* const void* */ /* [3] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 2),
/* typedef const void * const_void_ptr */
BTF_TYPEDEF_ENC(NAME_TBD, 3), /* [4] */
/* const_void_ptr[4] */
BTF_TYPE_ARRAY_ENC(4, 1, 4), /* [5] */
BTF_END_RAW,
},
.str_sec = "\0const_void_ptr",
.str_sec_size = sizeof("\0const_void_ptr"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "void_test3_map",
.key_size = sizeof(int),
.value_size = sizeof(void *) * 4,
.key_type_id = 1,
.value_type_id = 5,
.max_entries = 4,
},
/* const void[4] */
{
.descr = "void test #4",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* const void */ /* [2] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 0),
/* const void[4] */ /* [3] */
BTF_TYPE_ARRAY_ENC(2, 1, 4),
BTF_END_RAW,
},
.str_sec = "\0A\0m",
.str_sec_size = sizeof("\0A\0m"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "void_test4_map",
.key_size = sizeof(int),
.value_size = sizeof(void *) * 4,
.key_type_id = 1,
.value_type_id = 3,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid elem",
},
/* Array_A <------------------+
* elem_type == Array_B |
* | |
* | |
* Array_B <-------- + |
* elem_type == Array A --+
*/
{
.descr = "loop test #1",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* Array_A */ /* [2] */
BTF_TYPE_ARRAY_ENC(3, 1, 8),
/* Array_B */ /* [3] */
BTF_TYPE_ARRAY_ENC(2, 1, 8),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "loop_test1_map",
.key_size = sizeof(int),
.value_size = sizeof(sizeof(int) * 8),
.key_type_id = 1,
.value_type_id = 2,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Loop detected",
},
/* typedef is _before_ the BTF type of Array_A and Array_B
*
* typedef Array_B int_array;
*
* Array_A <------------------+
* elem_type == int_array |
* | |
* | |
* Array_B <-------- + |
* elem_type == Array_A --+
*/
{
.descr = "loop test #2",
.raw_types = {
/* int */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
/* typedef Array_B int_array */
BTF_TYPEDEF_ENC(1, 4), /* [2] */
/* Array_A */
BTF_TYPE_ARRAY_ENC(2, 1, 8), /* [3] */
/* Array_B */
BTF_TYPE_ARRAY_ENC(3, 1, 8), /* [4] */
BTF_END_RAW,
},
.str_sec = "\0int_array\0",
.str_sec_size = sizeof("\0int_array"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "loop_test2_map",
.key_size = sizeof(int),
.value_size = sizeof(sizeof(int) * 8),
.key_type_id = 1,
.value_type_id = 2,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Loop detected",
},
/* Array_A <------------------+
* elem_type == Array_B |
* | |
* | |
* Array_B <-------- + |
* elem_type == Array_A --+
*/
{
.descr = "loop test #3",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* Array_A */ /* [2] */
BTF_TYPE_ARRAY_ENC(3, 1, 8),
/* Array_B */ /* [3] */
BTF_TYPE_ARRAY_ENC(2, 1, 8),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "loop_test3_map",
.key_size = sizeof(int),
.value_size = sizeof(sizeof(int) * 8),
.key_type_id = 1,
.value_type_id = 2,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Loop detected",
},
/* typedef is _between_ the BTF type of Array_A and Array_B
*
* typedef Array_B int_array;
*
* Array_A <------------------+
* elem_type == int_array |
* | |
* | |
* Array_B <-------- + |
* elem_type == Array_A --+
*/
{
.descr = "loop test #4",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* Array_A */ /* [2] */
BTF_TYPE_ARRAY_ENC(3, 1, 8),
/* typedef Array_B int_array */ /* [3] */
BTF_TYPEDEF_ENC(NAME_TBD, 4),
/* Array_B */ /* [4] */
BTF_TYPE_ARRAY_ENC(2, 1, 8),
BTF_END_RAW,
},
.str_sec = "\0int_array\0",
.str_sec_size = sizeof("\0int_array"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "loop_test4_map",
.key_size = sizeof(int),
.value_size = sizeof(sizeof(int) * 8),
.key_type_id = 1,
.value_type_id = 2,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Loop detected",
},
/* typedef struct B Struct_B
*
* struct A {
* int x;
* Struct_B y;
* };
*
* struct B {
* int x;
* struct A y;
* };
*/
{
.descr = "loop test #5",
.raw_types = {
/* int */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
/* struct A */ /* [2] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 2), 8),
BTF_MEMBER_ENC(NAME_TBD, 1, 0), /* int x; */
BTF_MEMBER_ENC(NAME_TBD, 3, 32),/* Struct_B y; */
/* typedef struct B Struct_B */
BTF_TYPEDEF_ENC(NAME_TBD, 4), /* [3] */
/* struct B */ /* [4] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 2), 8),
BTF_MEMBER_ENC(NAME_TBD, 1, 0), /* int x; */
BTF_MEMBER_ENC(NAME_TBD, 2, 32),/* struct A y; */
BTF_END_RAW,
},
.str_sec = "\0A\0x\0y\0Struct_B\0B\0x\0y",
.str_sec_size = sizeof("\0A\0x\0y\0Struct_B\0B\0x\0y"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "loop_test5_map",
.key_size = sizeof(int),
.value_size = 8,
.key_type_id = 1,
.value_type_id = 2,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Loop detected",
},
/* struct A {
* int x;
* struct A array_a[4];
* };
*/
{
.descr = "loop test #6",
.raw_types = {
/* int */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ARRAY_ENC(3, 1, 4), /* [2] */
/* struct A */ /* [3] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 2), 8),
BTF_MEMBER_ENC(NAME_TBD, 1, 0), /* int x; */
BTF_MEMBER_ENC(NAME_TBD, 2, 32),/* struct A array_a[4]; */
BTF_END_RAW,
},
.str_sec = "\0A\0x\0y",
.str_sec_size = sizeof("\0A\0x\0y"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "loop_test6_map",
.key_size = sizeof(int),
.value_size = 8,
.key_type_id = 1,
.value_type_id = 2,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Loop detected",
},
{
.descr = "loop test #7",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* struct A { */ /* [2] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 1), sizeof(void *)),
/* const void *m; */
BTF_MEMBER_ENC(NAME_TBD, 3, 0),
/* CONST type_id=3 */ /* [3] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 4),
/* PTR type_id=2 */ /* [4] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 3),
BTF_END_RAW,
},
.str_sec = "\0A\0m",
.str_sec_size = sizeof("\0A\0m"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "loop_test7_map",
.key_size = sizeof(int),
.value_size = sizeof(void *),
.key_type_id = 1,
.value_type_id = 2,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Loop detected",
},
{
.descr = "loop test #8",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* struct A { */ /* [2] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 1), sizeof(void *)),
/* const void *m; */
BTF_MEMBER_ENC(NAME_TBD, 4, 0),
/* struct B { */ /* [3] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 1), sizeof(void *)),
/* const void *n; */
BTF_MEMBER_ENC(NAME_TBD, 6, 0),
/* CONST type_id=5 */ /* [4] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 5),
/* PTR type_id=6 */ /* [5] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 6),
/* CONST type_id=7 */ /* [6] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 7),
/* PTR type_id=4 */ /* [7] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 4),
BTF_END_RAW,
},
.str_sec = "\0A\0m\0B\0n",
.str_sec_size = sizeof("\0A\0m\0B\0n"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "loop_test8_map",
.key_size = sizeof(int),
.value_size = sizeof(void *),
.key_type_id = 1,
.value_type_id = 2,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Loop detected",
},
{
.descr = "string section does not end with null",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
BTF_END_RAW,
},
.str_sec = "\0int",
.str_sec_size = sizeof("\0int") - 1,
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "hdr_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid string section",
},
{
.descr = "empty string section",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = 0,
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "hdr_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid string section",
},
{
.descr = "empty type section",
.raw_types = {
BTF_END_RAW,
},
.str_sec = "\0int",
.str_sec_size = sizeof("\0int"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "hdr_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "No type found",
},
{
.descr = "btf_header test. Longer hdr_len",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
BTF_END_RAW,
},
.str_sec = "\0int",
.str_sec_size = sizeof("\0int"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "hdr_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.hdr_len_delta = 4,
.err_str = "Unsupported btf_header",
},
{
.descr = "btf_header test. Gap between hdr and type",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
BTF_END_RAW,
},
.str_sec = "\0int",
.str_sec_size = sizeof("\0int"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "hdr_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.type_off_delta = 4,
.err_str = "Unsupported section found",
},
{
.descr = "btf_header test. Gap between type and str",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
BTF_END_RAW,
},
.str_sec = "\0int",
.str_sec_size = sizeof("\0int"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "hdr_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.str_off_delta = 4,
.err_str = "Unsupported section found",
},
{
.descr = "btf_header test. Overlap between type and str",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
BTF_END_RAW,
},
.str_sec = "\0int",
.str_sec_size = sizeof("\0int"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "hdr_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.str_off_delta = -4,
.err_str = "Section overlap found",
},
{
.descr = "btf_header test. Larger BTF size",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
BTF_END_RAW,
},
.str_sec = "\0int",
.str_sec_size = sizeof("\0int"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "hdr_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.str_len_delta = -4,
.err_str = "Unsupported section found",
},
{
.descr = "btf_header test. Smaller BTF size",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
BTF_END_RAW,
},
.str_sec = "\0int",
.str_sec_size = sizeof("\0int"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "hdr_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.str_len_delta = 4,
.err_str = "Total section length too long",
},
{
.descr = "array test. index_type/elem_type \"int\"",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* int[16] */ /* [2] */
BTF_TYPE_ARRAY_ENC(1, 1, 16),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
},
{
.descr = "array test. index_type/elem_type \"const int\"",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* int[16] */ /* [2] */
BTF_TYPE_ARRAY_ENC(3, 3, 16),
/* CONST type_id=1 */ /* [3] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 1),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
},
{
.descr = "array test. index_type \"const int:31\"",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* int:31 */ /* [2] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 31, 4),
/* int[16] */ /* [3] */
BTF_TYPE_ARRAY_ENC(1, 4, 16),
/* CONST type_id=2 */ /* [4] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 2),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid index",
},
{
.descr = "array test. elem_type \"const int:31\"",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* int:31 */ /* [2] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 31, 4),
/* int[16] */ /* [3] */
BTF_TYPE_ARRAY_ENC(4, 1, 16),
/* CONST type_id=2 */ /* [4] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 2),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid array of int",
},
{
.descr = "array test. index_type \"void\"",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* int[16] */ /* [2] */
BTF_TYPE_ARRAY_ENC(1, 0, 16),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid index",
},
{
.descr = "array test. index_type \"const void\"",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* int[16] */ /* [2] */
BTF_TYPE_ARRAY_ENC(1, 3, 16),
/* CONST type_id=0 (void) */ /* [3] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 0),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid index",
},
{
.descr = "array test. elem_type \"const void\"",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* int[16] */ /* [2] */
BTF_TYPE_ARRAY_ENC(3, 1, 16),
/* CONST type_id=0 (void) */ /* [3] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 0),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid elem",
},
{
.descr = "array test. elem_type \"const void *\"",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* const void *[16] */ /* [2] */
BTF_TYPE_ARRAY_ENC(3, 1, 16),
/* CONST type_id=4 */ /* [3] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 4),
/* void* */ /* [4] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 0),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
},
{
.descr = "array test. index_type \"const void *\"",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* const void *[16] */ /* [2] */
BTF_TYPE_ARRAY_ENC(3, 3, 16),
/* CONST type_id=4 */ /* [3] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 4),
/* void* */ /* [4] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 0),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid index",
},
{
.descr = "array test. t->size != 0\"",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* int[16] */ /* [2] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ARRAY, 0, 0), 1),
BTF_ARRAY_ENC(1, 1, 16),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "size != 0",
},
{
.descr = "int test. invalid int_data",
.raw_types = {
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_INT, 0, 0), 4),
0x10000000,
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid int_data",
},
{
.descr = "invalid BTF_INFO",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
BTF_TYPE_ENC(0, 0x10000000, 4),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid btf_info",
},
{
.descr = "fwd test. t->type != 0\"",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* fwd type */ /* [2] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_FWD, 0, 0), 1),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "fwd_test_map",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "type != 0",
},
{
.descr = "typedef (invalid name, name_off = 0)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPEDEF_ENC(0, 1), /* [2] */
BTF_END_RAW,
},
.str_sec = "\0__int",
.str_sec_size = sizeof("\0__int"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "typedef_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid name",
},
{
.descr = "typedef (invalid name, invalid identifier)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPEDEF_ENC(NAME_TBD, 1), /* [2] */
BTF_END_RAW,
},
.str_sec = "\0__!int",
.str_sec_size = sizeof("\0__!int"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "typedef_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid name",
},
{
.descr = "ptr type (invalid name, name_off <> 0)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(NAME_TBD,
BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 1), /* [2] */
BTF_END_RAW,
},
.str_sec = "\0__int",
.str_sec_size = sizeof("\0__int"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "ptr_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid name",
},
{
.descr = "volatile type (invalid name, name_off <> 0)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(NAME_TBD,
BTF_INFO_ENC(BTF_KIND_VOLATILE, 0, 0), 1), /* [2] */
BTF_END_RAW,
},
.str_sec = "\0__int",
.str_sec_size = sizeof("\0__int"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "volatile_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid name",
},
{
.descr = "const type (invalid name, name_off <> 0)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(NAME_TBD,
BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 1), /* [2] */
BTF_END_RAW,
},
.str_sec = "\0__int",
.str_sec_size = sizeof("\0__int"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "const_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid name",
},
{
.descr = "restrict type (invalid name, name_off <> 0)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 1), /* [2] */
BTF_TYPE_ENC(NAME_TBD,
BTF_INFO_ENC(BTF_KIND_RESTRICT, 0, 0), 2), /* [3] */
BTF_END_RAW,
},
.str_sec = "\0__int",
.str_sec_size = sizeof("\0__int"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "restrict_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid name",
},
{
.descr = "fwd type (invalid name, name_off = 0)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_FWD, 0, 0), 0), /* [2] */
BTF_END_RAW,
},
.str_sec = "\0__skb",
.str_sec_size = sizeof("\0__skb"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "fwd_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid name",
},
{
.descr = "fwd type (invalid name, invalid identifier)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(NAME_TBD,
BTF_INFO_ENC(BTF_KIND_FWD, 0, 0), 0), /* [2] */
BTF_END_RAW,
},
.str_sec = "\0__!skb",
.str_sec_size = sizeof("\0__!skb"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "fwd_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid name",
},
{
.descr = "array type (invalid name, name_off <> 0)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(NAME_TBD,
BTF_INFO_ENC(BTF_KIND_ARRAY, 0, 0), 0), /* [2] */
BTF_ARRAY_ENC(1, 1, 4),
BTF_END_RAW,
},
.str_sec = "\0__skb",
.str_sec_size = sizeof("\0__skb"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid name",
},
{
.descr = "struct type (name_off = 0)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(0,
BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 1), 4), /* [2] */
BTF_MEMBER_ENC(NAME_TBD, 1, 0),
BTF_END_RAW,
},
.str_sec = "\0A",
.str_sec_size = sizeof("\0A"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "struct_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
},
{
.descr = "struct type (invalid name, invalid identifier)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(NAME_TBD,
BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 1), 4), /* [2] */
BTF_MEMBER_ENC(NAME_TBD, 1, 0),
BTF_END_RAW,
},
.str_sec = "\0A!\0B",
.str_sec_size = sizeof("\0A!\0B"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "struct_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid name",
},
{
.descr = "struct member (name_off = 0)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(0,
BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 1), 4), /* [2] */
BTF_MEMBER_ENC(NAME_TBD, 1, 0),
BTF_END_RAW,
},
.str_sec = "\0A",
.str_sec_size = sizeof("\0A"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "struct_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
},
{
.descr = "struct member (invalid name, invalid identifier)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(NAME_TBD,
BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 1), 4), /* [2] */
BTF_MEMBER_ENC(NAME_TBD, 1, 0),
BTF_END_RAW,
},
.str_sec = "\0A\0B*",
.str_sec_size = sizeof("\0A\0B*"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "struct_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid name",
},
{
.descr = "enum type (name_off = 0)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(0,
BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1),
sizeof(int)), /* [2] */
BTF_ENUM_ENC(NAME_TBD, 0),
BTF_END_RAW,
},
.str_sec = "\0A\0B",
.str_sec_size = sizeof("\0A\0B"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "enum_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
},
{
.descr = "enum type (invalid name, invalid identifier)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(NAME_TBD,
BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1),
sizeof(int)), /* [2] */
BTF_ENUM_ENC(NAME_TBD, 0),
BTF_END_RAW,
},
.str_sec = "\0A!\0B",
.str_sec_size = sizeof("\0A!\0B"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "enum_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid name",
},
{
.descr = "enum member (invalid name, name_off = 0)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(0,
BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1),
sizeof(int)), /* [2] */
BTF_ENUM_ENC(0, 0),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "enum_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid name",
},
{
.descr = "enum member (invalid name, invalid identifier)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(0,
BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1),
sizeof(int)), /* [2] */
BTF_ENUM_ENC(NAME_TBD, 0),
BTF_END_RAW,
},
.str_sec = "\0A!",
.str_sec_size = sizeof("\0A!"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "enum_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid name",
},
{
.descr = "arraymap invalid btf key (a bit field)",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* 32 bit int with 32 bit offset */ /* [2] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 32, 32, 8),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_map_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 2,
.value_type_id = 1,
.max_entries = 4,
.map_create_err = true,
},
{
.descr = "arraymap invalid btf key (!= 32 bits)",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* 16 bit int with 0 bit offset */ /* [2] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 16, 2),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_map_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 2,
.value_type_id = 1,
.max_entries = 4,
.map_create_err = true,
},
{
.descr = "arraymap invalid btf value (too small)",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_map_check_btf",
.key_size = sizeof(int),
/* btf_value_size < map->value_size */
.value_size = sizeof(__u64),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.map_create_err = true,
},
{
.descr = "arraymap invalid btf value (too big)",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_map_check_btf",
.key_size = sizeof(int),
/* btf_value_size > map->value_size */
.value_size = sizeof(__u16),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.map_create_err = true,
},
{
.descr = "func proto (int (*)(int, unsigned int))",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(0, 0, 0, 32, 4), /* [2] */
/* int (*)(int, unsigned int) */
BTF_FUNC_PROTO_ENC(1, 2), /* [3] */
BTF_FUNC_PROTO_ARG_ENC(0, 1),
BTF_FUNC_PROTO_ARG_ENC(0, 2),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "func_proto_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
},
{
.descr = "func proto (vararg)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(0, 0, 0, 32, 4), /* [2] */
/* void (*)(int, unsigned int, ...) */
BTF_FUNC_PROTO_ENC(0, 3), /* [3] */
BTF_FUNC_PROTO_ARG_ENC(0, 1),
BTF_FUNC_PROTO_ARG_ENC(0, 2),
BTF_FUNC_PROTO_ARG_ENC(0, 0),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "func_proto_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
},
{
.descr = "func proto (vararg with name)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(0, 0, 0, 32, 4), /* [2] */
/* void (*)(int a, unsigned int b, ... c) */
BTF_FUNC_PROTO_ENC(0, 3), /* [3] */
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 0),
BTF_END_RAW,
},
.str_sec = "\0a\0b\0c",
.str_sec_size = sizeof("\0a\0b\0c"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "func_proto_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid arg#3",
},
{
.descr = "func proto (arg after vararg)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(0, 0, 0, 32, 4), /* [2] */
/* void (*)(int a, ..., unsigned int b) */
BTF_FUNC_PROTO_ENC(0, 3), /* [3] */
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
BTF_FUNC_PROTO_ARG_ENC(0, 0),
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
BTF_END_RAW,
},
.str_sec = "\0a\0b",
.str_sec_size = sizeof("\0a\0b"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "func_proto_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid arg#2",
},
{
.descr = "func proto (CONST=>TYPEDEF=>PTR=>FUNC_PROTO)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(0, 0, 0, 32, 4), /* [2] */
/* typedef void (*func_ptr)(int, unsigned int) */
BTF_TYPEDEF_ENC(NAME_TBD, 5), /* [3] */
/* const func_ptr */
BTF_CONST_ENC(3), /* [4] */
BTF_PTR_ENC(6), /* [5] */
BTF_FUNC_PROTO_ENC(0, 2), /* [6] */
BTF_FUNC_PROTO_ARG_ENC(0, 1),
BTF_FUNC_PROTO_ARG_ENC(0, 2),
BTF_END_RAW,
},
.str_sec = "\0func_ptr",
.str_sec_size = sizeof("\0func_ptr"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "func_proto_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
},
{
.descr = "func proto (CONST=>TYPEDEF=>FUNC_PROTO)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(0, 0, 0, 32, 4), /* [2] */
BTF_CONST_ENC(4), /* [3] */
BTF_TYPEDEF_ENC(NAME_TBD, 5), /* [4] */
BTF_FUNC_PROTO_ENC(0, 2), /* [5] */
BTF_FUNC_PROTO_ARG_ENC(0, 1),
BTF_FUNC_PROTO_ARG_ENC(0, 2),
BTF_END_RAW,
},
.str_sec = "\0func_typedef",
.str_sec_size = sizeof("\0func_typedef"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "func_proto_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid type_id",
},
{
.descr = "func proto (btf_resolve(arg))",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
/* void (*)(const void *) */
BTF_FUNC_PROTO_ENC(0, 1), /* [2] */
BTF_FUNC_PROTO_ARG_ENC(0, 3),
BTF_CONST_ENC(4), /* [3] */
BTF_PTR_ENC(0), /* [4] */
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "func_proto_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
},
{
.descr = "func proto (Not all arg has name)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(0, 0, 0, 32, 4), /* [2] */
/* void (*)(int, unsigned int b) */
BTF_FUNC_PROTO_ENC(0, 2), /* [3] */
BTF_FUNC_PROTO_ARG_ENC(0, 1),
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
BTF_END_RAW,
},
.str_sec = "\0b",
.str_sec_size = sizeof("\0b"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "func_proto_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
},
{
.descr = "func proto (Bad arg name_off)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(0, 0, 0, 32, 4), /* [2] */
/* void (*)(int a, unsigned int <bad_name_off>) */
BTF_FUNC_PROTO_ENC(0, 2), /* [3] */
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
BTF_FUNC_PROTO_ARG_ENC(0xffffffff, 2),
BTF_END_RAW,
},
.str_sec = "\0a",
.str_sec_size = sizeof("\0a"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "func_proto_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid arg#2",
},
{
.descr = "func proto (Bad arg name)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(0, 0, 0, 32, 4), /* [2] */
/* void (*)(int a, unsigned int !!!) */
BTF_FUNC_PROTO_ENC(0, 2), /* [3] */
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
BTF_END_RAW,
},
.str_sec = "\0a\0!!!",
.str_sec_size = sizeof("\0a\0!!!"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "func_proto_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid arg#2",
},
{
.descr = "func proto (Invalid return type)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(0, 0, 0, 32, 4), /* [2] */
/* <bad_ret_type> (*)(int, unsigned int) */
BTF_FUNC_PROTO_ENC(100, 2), /* [3] */
BTF_FUNC_PROTO_ARG_ENC(0, 1),
BTF_FUNC_PROTO_ARG_ENC(0, 2),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "func_proto_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid return type",
},
{
.descr = "func proto (with func name)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(0, 0, 0, 32, 4), /* [2] */
/* void func_proto(int, unsigned int) */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_FUNC_PROTO, 0, 2), 0), /* [3] */
BTF_FUNC_PROTO_ARG_ENC(0, 1),
BTF_FUNC_PROTO_ARG_ENC(0, 2),
BTF_END_RAW,
},
.str_sec = "\0func_proto",
.str_sec_size = sizeof("\0func_proto"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "func_proto_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid name",
},
{
.descr = "func proto (const void arg)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(0, 0, 0, 32, 4), /* [2] */
/* void (*)(const void) */
BTF_FUNC_PROTO_ENC(0, 1), /* [3] */
BTF_FUNC_PROTO_ARG_ENC(0, 4),
BTF_CONST_ENC(0), /* [4] */
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "func_proto_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid arg#1",
},
{
.descr = "func (void func(int a, unsigned int b))",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(0, 0, 0, 32, 4), /* [2] */
/* void (*)(int a, unsigned int b) */
BTF_FUNC_PROTO_ENC(0, 2), /* [3] */
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
/* void func(int a, unsigned int b) */
BTF_FUNC_ENC(NAME_TBD, 3), /* [4] */
BTF_END_RAW,
},
.str_sec = "\0a\0b\0func",
.str_sec_size = sizeof("\0a\0b\0func"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "func_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
},
{
.descr = "func (No func name)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(0, 0, 0, 32, 4), /* [2] */
/* void (*)(int a, unsigned int b) */
BTF_FUNC_PROTO_ENC(0, 2), /* [3] */
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
/* void <no_name>(int a, unsigned int b) */
BTF_FUNC_ENC(0, 3), /* [4] */
BTF_END_RAW,
},
.str_sec = "\0a\0b",
.str_sec_size = sizeof("\0a\0b"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "func_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid name",
},
{
.descr = "func (Invalid func name)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(0, 0, 0, 32, 4), /* [2] */
/* void (*)(int a, unsigned int b) */
BTF_FUNC_PROTO_ENC(0, 2), /* [3] */
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
/* void !!!(int a, unsigned int b) */
BTF_FUNC_ENC(NAME_TBD, 3), /* [4] */
BTF_END_RAW,
},
.str_sec = "\0a\0b\0!!!",
.str_sec_size = sizeof("\0a\0b\0!!!"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "func_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid name",
},
{
.descr = "func (Some arg has no name)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(0, 0, 0, 32, 4), /* [2] */
/* void (*)(int a, unsigned int) */
BTF_FUNC_PROTO_ENC(0, 2), /* [3] */
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
BTF_FUNC_PROTO_ARG_ENC(0, 2),
/* void func(int a, unsigned int) */
BTF_FUNC_ENC(NAME_TBD, 3), /* [4] */
BTF_END_RAW,
},
.str_sec = "\0a\0func",
.str_sec_size = sizeof("\0a\0func"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "func_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid arg#2",
},
{
.descr = "func (Non zero vlen)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(0, 0, 0, 32, 4), /* [2] */
/* void (*)(int a, unsigned int b) */
BTF_FUNC_PROTO_ENC(0, 2), /* [3] */
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
/* void func(int a, unsigned int b) */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_FUNC, 0, 2), 3), /* [4] */
BTF_END_RAW,
},
.str_sec = "\0a\0b\0func",
.str_sec_size = sizeof("\0a\0b\0func"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "func_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "vlen != 0",
},
{
.descr = "func (Not referring to FUNC_PROTO)",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_FUNC_ENC(NAME_TBD, 1), /* [2] */
BTF_END_RAW,
},
.str_sec = "\0func",
.str_sec_size = sizeof("\0func"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "func_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid type_id",
},
{
.descr = "invalid int kind_flag",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_INT, 1, 0), 4), /* [2] */
BTF_INT_ENC(0, 0, 32),
BTF_END_RAW,
},
BTF_STR_SEC(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "int_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid btf_info kind_flag",
},
{
.descr = "invalid ptr kind_flag",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 1, 0), 1), /* [2] */
BTF_END_RAW,
},
BTF_STR_SEC(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "ptr_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid btf_info kind_flag",
},
{
.descr = "invalid array kind_flag",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ARRAY, 1, 0), 0), /* [2] */
BTF_ARRAY_ENC(1, 1, 1),
BTF_END_RAW,
},
BTF_STR_SEC(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "array_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid btf_info kind_flag",
},
{
.descr = "invalid enum kind_flag",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ENUM, 1, 1), 4), /* [2] */
BTF_ENUM_ENC(NAME_TBD, 0),
BTF_END_RAW,
},
BTF_STR_SEC("\0A"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "enum_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid btf_info kind_flag",
},
{
.descr = "valid fwd kind_flag",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(NAME_TBD,
BTF_INFO_ENC(BTF_KIND_FWD, 1, 0), 0), /* [2] */
BTF_END_RAW,
},
BTF_STR_SEC("\0A"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "fwd_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
},
{
.descr = "invalid typedef kind_flag",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(NAME_TBD,
BTF_INFO_ENC(BTF_KIND_TYPEDEF, 1, 0), 1), /* [2] */
BTF_END_RAW,
},
BTF_STR_SEC("\0A"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "typedef_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid btf_info kind_flag",
},
{
.descr = "invalid volatile kind_flag",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_VOLATILE, 1, 0), 1), /* [2] */
BTF_END_RAW,
},
BTF_STR_SEC(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "volatile_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid btf_info kind_flag",
},
{
.descr = "invalid const kind_flag",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 1, 0), 1), /* [2] */
BTF_END_RAW,
},
BTF_STR_SEC(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "const_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid btf_info kind_flag",
},
{
.descr = "invalid restrict kind_flag",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_RESTRICT, 1, 0), 1), /* [2] */
BTF_END_RAW,
},
BTF_STR_SEC(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "restrict_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid btf_info kind_flag",
},
{
.descr = "invalid func kind_flag",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_FUNC_PROTO, 0, 0), 0), /* [2] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_FUNC, 1, 0), 2), /* [3] */
BTF_END_RAW,
},
BTF_STR_SEC("\0A"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "func_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid btf_info kind_flag",
},
{
.descr = "invalid func_proto kind_flag",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_FUNC_PROTO, 1, 0), 0), /* [2] */
BTF_END_RAW,
},
BTF_STR_SEC(""),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "func_proto_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid btf_info kind_flag",
},
{
.descr = "valid struct, kind_flag, bitfield_size = 0",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 2), 8), /* [2] */
BTF_MEMBER_ENC(NAME_TBD, 1, BTF_MEMBER_OFFSET(0, 0)),
BTF_MEMBER_ENC(NAME_TBD, 1, BTF_MEMBER_OFFSET(0, 32)),
BTF_END_RAW,
},
BTF_STR_SEC("\0A\0B"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "struct_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
},
{
.descr = "valid struct, kind_flag, int member, bitfield_size != 0",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 2), 4), /* [2] */
BTF_MEMBER_ENC(NAME_TBD, 1, BTF_MEMBER_OFFSET(4, 0)),
BTF_MEMBER_ENC(NAME_TBD, 1, BTF_MEMBER_OFFSET(4, 4)),
BTF_END_RAW,
},
BTF_STR_SEC("\0A\0B"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "struct_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
},
{
.descr = "valid union, kind_flag, int member, bitfield_size != 0",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_UNION, 1, 2), 4), /* [2] */
BTF_MEMBER_ENC(NAME_TBD, 1, BTF_MEMBER_OFFSET(4, 0)),
BTF_MEMBER_ENC(NAME_TBD, 1, BTF_MEMBER_OFFSET(4, 0)),
BTF_END_RAW,
},
BTF_STR_SEC("\0A\0B"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "union_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
},
{
.descr = "valid struct, kind_flag, enum member, bitfield_size != 0",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1), 4), /* [2] */
BTF_ENUM_ENC(NAME_TBD, 0),
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 2), 4),/* [3] */
BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(4, 0)),
BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(4, 4)),
BTF_END_RAW,
},
BTF_STR_SEC("\0A\0B\0C"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "struct_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
},
{
.descr = "valid union, kind_flag, enum member, bitfield_size != 0",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1), 4), /* [2] */
BTF_ENUM_ENC(NAME_TBD, 0),
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_UNION, 1, 2), 4), /* [3] */
BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(4, 0)),
BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(4, 0)),
BTF_END_RAW,
},
BTF_STR_SEC("\0A\0B\0C"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "union_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
},
{
.descr = "valid struct, kind_flag, typedef member, bitfield_size != 0",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1), 4), /* [2] */
BTF_ENUM_ENC(NAME_TBD, 0),
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 2), 4),/* [3] */
BTF_MEMBER_ENC(NAME_TBD, 4, BTF_MEMBER_OFFSET(4, 0)),
BTF_MEMBER_ENC(NAME_TBD, 5, BTF_MEMBER_OFFSET(4, 4)),
BTF_TYPEDEF_ENC(NAME_TBD, 1), /* [4] */
BTF_TYPEDEF_ENC(NAME_TBD, 2), /* [5] */
BTF_END_RAW,
},
BTF_STR_SEC("\0A\0B\0C\0D\0E"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "struct_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
},
{
.descr = "valid union, kind_flag, typedef member, bitfield_size != 0",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1), 4), /* [2] */
BTF_ENUM_ENC(NAME_TBD, 0),
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_UNION, 1, 2), 4), /* [3] */
BTF_MEMBER_ENC(NAME_TBD, 4, BTF_MEMBER_OFFSET(4, 0)),
BTF_MEMBER_ENC(NAME_TBD, 5, BTF_MEMBER_OFFSET(4, 0)),
BTF_TYPEDEF_ENC(NAME_TBD, 1), /* [4] */
BTF_TYPEDEF_ENC(NAME_TBD, 2), /* [5] */
BTF_END_RAW,
},
BTF_STR_SEC("\0A\0B\0C\0D\0E"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "union_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
},
{
.descr = "invalid struct, kind_flag, bitfield_size greater than struct size",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 2), 4), /* [2] */
BTF_MEMBER_ENC(NAME_TBD, 1, BTF_MEMBER_OFFSET(20, 0)),
BTF_MEMBER_ENC(NAME_TBD, 1, BTF_MEMBER_OFFSET(20, 20)),
BTF_END_RAW,
},
BTF_STR_SEC("\0A\0B"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "struct_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Member exceeds struct_size",
},
{
.descr = "invalid struct, kind_flag, bitfield base_type int not regular",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 20, 4), /* [2] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 2), 4), /* [3] */
BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(20, 0)),
BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(20, 20)),
BTF_END_RAW,
},
BTF_STR_SEC("\0A\0B"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "struct_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid member base type",
},
{
.descr = "invalid struct, kind_flag, base_type int not regular",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 12, 4), /* [2] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 2), 4), /* [3] */
BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(8, 0)),
BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(8, 8)),
BTF_END_RAW,
},
BTF_STR_SEC("\0A\0B"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "struct_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid member base type",
},
{
.descr = "invalid union, kind_flag, bitfield_size greater than struct size",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_UNION, 1, 2), 2), /* [2] */
BTF_MEMBER_ENC(NAME_TBD, 1, BTF_MEMBER_OFFSET(8, 0)),
BTF_MEMBER_ENC(NAME_TBD, 1, BTF_MEMBER_OFFSET(20, 0)),
BTF_END_RAW,
},
BTF_STR_SEC("\0A\0B"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "union_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Member exceeds struct_size",
},
{
.descr = "invalid struct, kind_flag, int member, bitfield_size = 0, wrong byte alignment",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [2] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 2), 12), /* [3] */
BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(0, 0)),
BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(0, 36)),
BTF_END_RAW,
},
BTF_STR_SEC("\0A\0B"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "struct_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid member offset",
},
{
.descr = "invalid struct, kind_flag, enum member, bitfield_size = 0, wrong byte alignment",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [2] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1), 4), /* [2] */
BTF_ENUM_ENC(NAME_TBD, 0),
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 2), 12), /* [3] */
BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(0, 0)),
BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(0, 36)),
BTF_END_RAW,
},
BTF_STR_SEC("\0A\0B\0C"),
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "struct_type_check_btf",
.key_size = sizeof(int),
.value_size = sizeof(int),
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 4,
.btf_load_err = true,
.err_str = "Invalid member offset",
},
}; /* struct btf_raw_test raw_tests[] */
static const char *get_next_str(const char *start, const char *end)
{
return start < end - 1 ? start + 1 : NULL;
}
static int get_raw_sec_size(const __u32 *raw_types)
{
int i;
for (i = MAX_NR_RAW_U32 - 1;
i >= 0 && raw_types[i] != BTF_END_RAW;
i--)
;
return i < 0 ? i : i * sizeof(raw_types[0]);
}
static void *btf_raw_create(const struct btf_header *hdr,
const __u32 *raw_types,
const char *str,
unsigned int str_sec_size,
unsigned int *btf_size,
const char **ret_next_str)
{
const char *next_str = str, *end_str = str + str_sec_size;
unsigned int size_needed, offset;
struct btf_header *ret_hdr;
int i, type_sec_size;
uint32_t *ret_types;
void *raw_btf;
type_sec_size = get_raw_sec_size(raw_types);
if (CHECK(type_sec_size < 0, "Cannot get nr_raw_types"))
return NULL;
size_needed = sizeof(*hdr) + type_sec_size + str_sec_size;
raw_btf = malloc(size_needed);
if (CHECK(!raw_btf, "Cannot allocate memory for raw_btf"))
return NULL;
/* Copy header */
memcpy(raw_btf, hdr, sizeof(*hdr));
offset = sizeof(*hdr);
/* Copy type section */
ret_types = raw_btf + offset;
for (i = 0; i < type_sec_size / sizeof(raw_types[0]); i++) {
if (raw_types[i] == NAME_TBD) {
next_str = get_next_str(next_str, end_str);
if (CHECK(!next_str, "Error in getting next_str")) {
free(raw_btf);
return NULL;
}
ret_types[i] = next_str - str;
next_str += strlen(next_str);
} else {
ret_types[i] = raw_types[i];
}
}
offset += type_sec_size;
/* Copy string section */
memcpy(raw_btf + offset, str, str_sec_size);
ret_hdr = (struct btf_header *)raw_btf;
ret_hdr->type_len = type_sec_size;
ret_hdr->str_off = type_sec_size;
ret_hdr->str_len = str_sec_size;
*btf_size = size_needed;
if (ret_next_str)
*ret_next_str = next_str;
return raw_btf;
}
static int do_test_raw(unsigned int test_num)
{
struct btf_raw_test *test = &raw_tests[test_num - 1];
struct bpf_create_map_attr create_attr = {};
int map_fd = -1, btf_fd = -1;
unsigned int raw_btf_size;
struct btf_header *hdr;
void *raw_btf;
int err;
fprintf(stderr, "BTF raw test[%u] (%s): ", test_num, test->descr);
raw_btf = btf_raw_create(&hdr_tmpl,
test->raw_types,
test->str_sec,
test->str_sec_size,
&raw_btf_size, NULL);
if (!raw_btf)
return -1;
hdr = raw_btf;
hdr->hdr_len = (int)hdr->hdr_len + test->hdr_len_delta;
hdr->type_off = (int)hdr->type_off + test->type_off_delta;
hdr->str_off = (int)hdr->str_off + test->str_off_delta;
hdr->str_len = (int)hdr->str_len + test->str_len_delta;
*btf_log_buf = '\0';
btf_fd = bpf_load_btf(raw_btf, raw_btf_size,
btf_log_buf, BTF_LOG_BUF_SIZE,
args.always_log);
free(raw_btf);
err = ((btf_fd == -1) != test->btf_load_err);
if (CHECK(err, "btf_fd:%d test->btf_load_err:%u",
btf_fd, test->btf_load_err) ||
CHECK(test->err_str && !strstr(btf_log_buf, test->err_str),
"expected err_str:%s", test->err_str)) {
err = -1;
goto done;
}
if (err || btf_fd == -1)
goto done;
create_attr.name = test->map_name;
create_attr.map_type = test->map_type;
create_attr.key_size = test->key_size;
create_attr.value_size = test->value_size;
create_attr.max_entries = test->max_entries;
create_attr.btf_fd = btf_fd;
create_attr.btf_key_type_id = test->key_type_id;
create_attr.btf_value_type_id = test->value_type_id;
map_fd = bpf_create_map_xattr(&create_attr);
err = ((map_fd == -1) != test->map_create_err);
CHECK(err, "map_fd:%d test->map_create_err:%u",
map_fd, test->map_create_err);
done:
if (!err)
fprintf(stderr, "OK");
if (*btf_log_buf && (err || args.always_log))
fprintf(stderr, "\n%s", btf_log_buf);
if (btf_fd != -1)
close(btf_fd);
if (map_fd != -1)
close(map_fd);
return err;
}
static int test_raw(void)
{
unsigned int i;
int err = 0;
if (args.raw_test_num)
return count_result(do_test_raw(args.raw_test_num));
for (i = 1; i <= ARRAY_SIZE(raw_tests); i++)
err |= count_result(do_test_raw(i));
return err;
}
struct btf_get_info_test {
const char *descr;
const char *str_sec;
__u32 raw_types[MAX_NR_RAW_U32];
__u32 str_sec_size;
int btf_size_delta;
int (*special_test)(unsigned int test_num);
};
static int test_big_btf_info(unsigned int test_num);
static int test_btf_id(unsigned int test_num);
const struct btf_get_info_test get_info_tests[] = {
{
.descr = "== raw_btf_size+1",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.btf_size_delta = 1,
},
{
.descr = "== raw_btf_size-3",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.btf_size_delta = -3,
},
{
.descr = "Large bpf_btf_info",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.special_test = test_big_btf_info,
},
{
.descr = "BTF ID",
.raw_types = {
/* int */ /* [1] */
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
/* unsigned int */ /* [2] */
BTF_TYPE_INT_ENC(0, 0, 0, 32, 4),
BTF_END_RAW,
},
.str_sec = "",
.str_sec_size = sizeof(""),
.special_test = test_btf_id,
},
};
static inline __u64 ptr_to_u64(const void *ptr)
{
return (__u64)(unsigned long)ptr;
}
static int test_big_btf_info(unsigned int test_num)
{
const struct btf_get_info_test *test = &get_info_tests[test_num - 1];
uint8_t *raw_btf = NULL, *user_btf = NULL;
unsigned int raw_btf_size;
struct {
struct bpf_btf_info info;
uint64_t garbage;
} info_garbage;
struct bpf_btf_info *info;
int btf_fd = -1, err;
uint32_t info_len;
raw_btf = btf_raw_create(&hdr_tmpl,
test->raw_types,
test->str_sec,
test->str_sec_size,
&raw_btf_size, NULL);
if (!raw_btf)
return -1;
*btf_log_buf = '\0';
user_btf = malloc(raw_btf_size);
if (CHECK(!user_btf, "!user_btf")) {
err = -1;
goto done;
}
btf_fd = bpf_load_btf(raw_btf, raw_btf_size,
btf_log_buf, BTF_LOG_BUF_SIZE,
args.always_log);
if (CHECK(btf_fd == -1, "errno:%d", errno)) {
err = -1;
goto done;
}
/*
* GET_INFO should error out if the userspace info
* has non zero tailing bytes.
*/
info = &info_garbage.info;
memset(info, 0, sizeof(*info));
info_garbage.garbage = 0xdeadbeef;
info_len = sizeof(info_garbage);
info->btf = ptr_to_u64(user_btf);
info->btf_size = raw_btf_size;
err = bpf_obj_get_info_by_fd(btf_fd, info, &info_len);
if (CHECK(!err, "!err")) {
err = -1;
goto done;
}
/*
* GET_INFO should succeed even info_len is larger than
* the kernel supported as long as tailing bytes are zero.
* The kernel supported info len should also be returned
* to userspace.
*/
info_garbage.garbage = 0;
err = bpf_obj_get_info_by_fd(btf_fd, info, &info_len);
if (CHECK(err || info_len != sizeof(*info),
"err:%d errno:%d info_len:%u sizeof(*info):%lu",
err, errno, info_len, sizeof(*info))) {
err = -1;
goto done;
}
fprintf(stderr, "OK");
done:
if (*btf_log_buf && (err || args.always_log))
fprintf(stderr, "\n%s", btf_log_buf);
free(raw_btf);
free(user_btf);
if (btf_fd != -1)
close(btf_fd);
return err;
}
static int test_btf_id(unsigned int test_num)
{
const struct btf_get_info_test *test = &get_info_tests[test_num - 1];
struct bpf_create_map_attr create_attr = {};
uint8_t *raw_btf = NULL, *user_btf[2] = {};
int btf_fd[2] = {-1, -1}, map_fd = -1;
struct bpf_map_info map_info = {};
struct bpf_btf_info info[2] = {};
unsigned int raw_btf_size;
uint32_t info_len;
int err, i, ret;
raw_btf = btf_raw_create(&hdr_tmpl,
test->raw_types,
test->str_sec,
test->str_sec_size,
&raw_btf_size, NULL);
if (!raw_btf)
return -1;
*btf_log_buf = '\0';
for (i = 0; i < 2; i++) {
user_btf[i] = malloc(raw_btf_size);
if (CHECK(!user_btf[i], "!user_btf[%d]", i)) {
err = -1;
goto done;
}
info[i].btf = ptr_to_u64(user_btf[i]);
info[i].btf_size = raw_btf_size;
}
btf_fd[0] = bpf_load_btf(raw_btf, raw_btf_size,
btf_log_buf, BTF_LOG_BUF_SIZE,
args.always_log);
if (CHECK(btf_fd[0] == -1, "errno:%d", errno)) {
err = -1;
goto done;
}
/* Test BPF_OBJ_GET_INFO_BY_ID on btf_id */
info_len = sizeof(info[0]);
err = bpf_obj_get_info_by_fd(btf_fd[0], &info[0], &info_len);
if (CHECK(err, "errno:%d", errno)) {
err = -1;
goto done;
}
btf_fd[1] = bpf_btf_get_fd_by_id(info[0].id);
if (CHECK(btf_fd[1] == -1, "errno:%d", errno)) {
err = -1;
goto done;
}
ret = 0;
err = bpf_obj_get_info_by_fd(btf_fd[1], &info[1], &info_len);
if (CHECK(err || info[0].id != info[1].id ||
info[0].btf_size != info[1].btf_size ||
(ret = memcmp(user_btf[0], user_btf[1], info[0].btf_size)),
"err:%d errno:%d id0:%u id1:%u btf_size0:%u btf_size1:%u memcmp:%d",
err, errno, info[0].id, info[1].id,
info[0].btf_size, info[1].btf_size, ret)) {
err = -1;
goto done;
}
/* Test btf members in struct bpf_map_info */
create_attr.name = "test_btf_id";
create_attr.map_type = BPF_MAP_TYPE_ARRAY;
create_attr.key_size = sizeof(int);
create_attr.value_size = sizeof(unsigned int);
create_attr.max_entries = 4;
create_attr.btf_fd = btf_fd[0];
create_attr.btf_key_type_id = 1;
create_attr.btf_value_type_id = 2;
map_fd = bpf_create_map_xattr(&create_attr);
if (CHECK(map_fd == -1, "errno:%d", errno)) {
err = -1;
goto done;
}
info_len = sizeof(map_info);
err = bpf_obj_get_info_by_fd(map_fd, &map_info, &info_len);
if (CHECK(err || map_info.btf_id != info[0].id ||
map_info.btf_key_type_id != 1 || map_info.btf_value_type_id != 2,
"err:%d errno:%d info.id:%u btf_id:%u btf_key_type_id:%u btf_value_type_id:%u",
err, errno, info[0].id, map_info.btf_id, map_info.btf_key_type_id,
map_info.btf_value_type_id)) {
err = -1;
goto done;
}
for (i = 0; i < 2; i++) {
close(btf_fd[i]);
btf_fd[i] = -1;
}
/* Test BTF ID is removed from the kernel */
btf_fd[0] = bpf_btf_get_fd_by_id(map_info.btf_id);
if (CHECK(btf_fd[0] == -1, "errno:%d", errno)) {
err = -1;
goto done;
}
close(btf_fd[0]);
btf_fd[0] = -1;
/* The map holds the last ref to BTF and its btf_id */
close(map_fd);
map_fd = -1;
btf_fd[0] = bpf_btf_get_fd_by_id(map_info.btf_id);
if (CHECK(btf_fd[0] != -1, "BTF lingers")) {
err = -1;
goto done;
}
fprintf(stderr, "OK");
done:
if (*btf_log_buf && (err || args.always_log))
fprintf(stderr, "\n%s", btf_log_buf);
free(raw_btf);
if (map_fd != -1)
close(map_fd);
for (i = 0; i < 2; i++) {
free(user_btf[i]);
if (btf_fd[i] != -1)
close(btf_fd[i]);
}
return err;
}
static int do_test_get_info(unsigned int test_num)
{
const struct btf_get_info_test *test = &get_info_tests[test_num - 1];
unsigned int raw_btf_size, user_btf_size, expected_nbytes;
uint8_t *raw_btf = NULL, *user_btf = NULL;
struct bpf_btf_info info = {};
int btf_fd = -1, err, ret;
uint32_t info_len;
fprintf(stderr, "BTF GET_INFO test[%u] (%s): ",
test_num, test->descr);
if (test->special_test)
return test->special_test(test_num);
raw_btf = btf_raw_create(&hdr_tmpl,
test->raw_types,
test->str_sec,
test->str_sec_size,
&raw_btf_size, NULL);
if (!raw_btf)
return -1;
*btf_log_buf = '\0';
user_btf = malloc(raw_btf_size);
if (CHECK(!user_btf, "!user_btf")) {
err = -1;
goto done;
}
btf_fd = bpf_load_btf(raw_btf, raw_btf_size,
btf_log_buf, BTF_LOG_BUF_SIZE,
args.always_log);
if (CHECK(btf_fd == -1, "errno:%d", errno)) {
err = -1;
goto done;
}
user_btf_size = (int)raw_btf_size + test->btf_size_delta;
expected_nbytes = min(raw_btf_size, user_btf_size);
if (raw_btf_size > expected_nbytes)
memset(user_btf + expected_nbytes, 0xff,
raw_btf_size - expected_nbytes);
info_len = sizeof(info);
info.btf = ptr_to_u64(user_btf);
info.btf_size = user_btf_size;
ret = 0;
err = bpf_obj_get_info_by_fd(btf_fd, &info, &info_len);
if (CHECK(err || !info.id || info_len != sizeof(info) ||
info.btf_size != raw_btf_size ||
(ret = memcmp(raw_btf, user_btf, expected_nbytes)),
"err:%d errno:%d info.id:%u info_len:%u sizeof(info):%lu raw_btf_size:%u info.btf_size:%u expected_nbytes:%u memcmp:%d",
err, errno, info.id, info_len, sizeof(info),
raw_btf_size, info.btf_size, expected_nbytes, ret)) {
err = -1;
goto done;
}
while (expected_nbytes < raw_btf_size) {
fprintf(stderr, "%u...", expected_nbytes);
if (CHECK(user_btf[expected_nbytes++] != 0xff,
"user_btf[%u]:%x != 0xff", expected_nbytes - 1,
user_btf[expected_nbytes - 1])) {
err = -1;
goto done;
}
}
fprintf(stderr, "OK");
done:
if (*btf_log_buf && (err || args.always_log))
fprintf(stderr, "\n%s", btf_log_buf);
free(raw_btf);
free(user_btf);
if (btf_fd != -1)
close(btf_fd);
return err;
}
static int test_get_info(void)
{
unsigned int i;
int err = 0;
if (args.get_info_test_num)
return count_result(do_test_get_info(args.get_info_test_num));
for (i = 1; i <= ARRAY_SIZE(get_info_tests); i++)
err |= count_result(do_test_get_info(i));
return err;
}
struct btf_file_test {
const char *file;
bool btf_kv_notfound;
};
static struct btf_file_test file_tests[] = {
{
.file = "test_btf_haskv.o",
},
{
.file = "test_btf_nokv.o",
.btf_kv_notfound = true,
},
};
static int file_has_btf_elf(const char *fn, bool *has_btf_ext)
{
Elf_Scn *scn = NULL;
GElf_Ehdr ehdr;
int ret = 0;
int elf_fd;
Elf *elf;
if (CHECK(elf_version(EV_CURRENT) == EV_NONE,
"elf_version(EV_CURRENT) == EV_NONE"))
return -1;
elf_fd = open(fn, O_RDONLY);
if (CHECK(elf_fd == -1, "open(%s): errno:%d", fn, errno))
return -1;
elf = elf_begin(elf_fd, ELF_C_READ, NULL);
if (CHECK(!elf, "elf_begin(%s): %s", fn, elf_errmsg(elf_errno()))) {
ret = -1;
goto done;
}
if (CHECK(!gelf_getehdr(elf, &ehdr), "!gelf_getehdr(%s)", fn)) {
ret = -1;
goto done;
}
while ((scn = elf_nextscn(elf, scn))) {
const char *sh_name;
GElf_Shdr sh;
if (CHECK(gelf_getshdr(scn, &sh) != &sh,
"file:%s gelf_getshdr != &sh", fn)) {
ret = -1;
goto done;
}
sh_name = elf_strptr(elf, ehdr.e_shstrndx, sh.sh_name);
if (!strcmp(sh_name, BTF_ELF_SEC))
ret = 1;
if (!strcmp(sh_name, BTF_EXT_ELF_SEC))
*has_btf_ext = true;
}
done:
close(elf_fd);
elf_end(elf);
return ret;
}
static int do_test_file(unsigned int test_num)
{
const struct btf_file_test *test = &file_tests[test_num - 1];
const char *expected_fnames[] = {"_dummy_tracepoint",
"test_long_fname_1",
"test_long_fname_2"};
struct bpf_prog_info info = {};
struct bpf_object *obj = NULL;
struct bpf_func_info *finfo;
struct bpf_program *prog;
__u32 info_len, rec_size;
bool has_btf_ext = false;
struct btf *btf = NULL;
void *func_info = NULL;
struct bpf_map *map;
int i, err, prog_fd;
fprintf(stderr, "BTF libbpf test[%u] (%s): ", test_num,
test->file);
err = file_has_btf_elf(test->file, &has_btf_ext);
if (err == -1)
return err;
if (err == 0) {
fprintf(stderr, "SKIP. No ELF %s found", BTF_ELF_SEC);
skip_cnt++;
return 0;
}
obj = bpf_object__open(test->file);
if (CHECK(IS_ERR(obj), "obj: %ld", PTR_ERR(obj)))
return PTR_ERR(obj);
err = bpf_object__btf_fd(obj);
if (CHECK(err == -1, "bpf_object__btf_fd: -1"))
goto done;
prog = bpf_program__next(NULL, obj);
if (CHECK(!prog, "Cannot find bpf_prog")) {
err = -1;
goto done;
}
bpf_program__set_type(prog, BPF_PROG_TYPE_TRACEPOINT);
err = bpf_object__load(obj);
if (CHECK(err < 0, "bpf_object__load: %d", err))
goto done;
prog_fd = bpf_program__fd(prog);
map = bpf_object__find_map_by_name(obj, "btf_map");
if (CHECK(!map, "btf_map not found")) {
err = -1;
goto done;
}
err = (bpf_map__btf_key_type_id(map) == 0 || bpf_map__btf_value_type_id(map) == 0)
!= test->btf_kv_notfound;
if (CHECK(err, "btf_key_type_id:%u btf_value_type_id:%u test->btf_kv_notfound:%u",
bpf_map__btf_key_type_id(map), bpf_map__btf_value_type_id(map),
test->btf_kv_notfound))
goto done;
if (!has_btf_ext)
goto skip;
/* get necessary program info */
info_len = sizeof(struct bpf_prog_info);
err = bpf_obj_get_info_by_fd(prog_fd, &info, &info_len);
if (CHECK(err == -1, "invalid get info (1st) errno:%d", errno)) {
fprintf(stderr, "%s\n", btf_log_buf);
err = -1;
goto done;
}
if (CHECK(info.nr_func_info != 3,
"incorrect info.nr_func_info (1st) %d",
info.nr_func_info)) {
err = -1;
goto done;
}
rec_size = info.func_info_rec_size;
if (CHECK(rec_size != sizeof(struct bpf_func_info),
"incorrect info.func_info_rec_size (1st) %d\n", rec_size)) {
err = -1;
goto done;
}
func_info = malloc(info.nr_func_info * rec_size);
if (CHECK(!func_info, "out of memory")) {
err = -1;
goto done;
}
/* reset info to only retrieve func_info related data */
memset(&info, 0, sizeof(info));
info.nr_func_info = 3;
info.func_info_rec_size = rec_size;
info.func_info = ptr_to_u64(func_info);
err = bpf_obj_get_info_by_fd(prog_fd, &info, &info_len);
if (CHECK(err == -1, "invalid get info (2nd) errno:%d", errno)) {
fprintf(stderr, "%s\n", btf_log_buf);
err = -1;
goto done;
}
if (CHECK(info.nr_func_info != 3,
"incorrect info.nr_func_info (2nd) %d",
info.nr_func_info)) {
err = -1;
goto done;
}
if (CHECK(info.func_info_rec_size != rec_size,
"incorrect info.func_info_rec_size (2nd) %d",
info.func_info_rec_size)) {
err = -1;
goto done;
}
err = btf__get_from_id(info.btf_id, &btf);
if (CHECK(err, "cannot get btf from kernel, err: %d", err))
goto done;
/* check three functions */
finfo = func_info;
for (i = 0; i < 3; i++) {
const struct btf_type *t;
const char *fname;
t = btf__type_by_id(btf, finfo->type_id);
if (CHECK(!t, "btf__type_by_id failure: id %u",
finfo->type_id)) {
err = -1;
goto done;
}
fname = btf__name_by_offset(btf, t->name_off);
err = strcmp(fname, expected_fnames[i]);
/* for the second and third functions in .text section,
* the compiler may order them either way.
*/
if (i && err)
err = strcmp(fname, expected_fnames[3 - i]);
if (CHECK(err, "incorrect fname %s", fname ? : "")) {
err = -1;
goto done;
}
finfo = (void *)finfo + rec_size;
}
skip:
fprintf(stderr, "OK");
done:
free(func_info);
bpf_object__close(obj);
return err;
}
static int test_file(void)
{
unsigned int i;
int err = 0;
if (args.file_test_num)
return count_result(do_test_file(args.file_test_num));
for (i = 1; i <= ARRAY_SIZE(file_tests); i++)
err |= count_result(do_test_file(i));
return err;
}
const char *pprint_enum_str[] = {
"ENUM_ZERO",
"ENUM_ONE",
"ENUM_TWO",
"ENUM_THREE",
};
struct pprint_mapv {
uint32_t ui32;
uint16_t ui16;
/* 2 bytes hole */
int32_t si32;
uint32_t unused_bits2a:2,
bits28:28,
unused_bits2b:2;
union {
uint64_t ui64;
uint8_t ui8a[8];
};
enum {
ENUM_ZERO,
ENUM_ONE,
ENUM_TWO,
ENUM_THREE,
} aenum;
uint32_t ui32b;
uint32_t bits2c:2;
};
static struct btf_raw_test pprint_test_template[] = {
{
.raw_types = {
/* unsighed char */ /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 8, 1),
/* unsigned short */ /* [2] */
BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 16, 2),
/* unsigned int */ /* [3] */
BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 32, 4),
/* int */ /* [4] */
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
/* unsigned long long */ /* [5] */
BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 64, 8),
/* 2 bits */ /* [6] */
BTF_TYPE_INT_ENC(0, 0, 0, 2, 2),
/* 28 bits */ /* [7] */
BTF_TYPE_INT_ENC(0, 0, 0, 28, 4),
/* uint8_t[8] */ /* [8] */
BTF_TYPE_ARRAY_ENC(9, 1, 8),
/* typedef unsigned char uint8_t */ /* [9] */
BTF_TYPEDEF_ENC(NAME_TBD, 1),
/* typedef unsigned short uint16_t */ /* [10] */
BTF_TYPEDEF_ENC(NAME_TBD, 2),
/* typedef unsigned int uint32_t */ /* [11] */
BTF_TYPEDEF_ENC(NAME_TBD, 3),
/* typedef int int32_t */ /* [12] */
BTF_TYPEDEF_ENC(NAME_TBD, 4),
/* typedef unsigned long long uint64_t *//* [13] */
BTF_TYPEDEF_ENC(NAME_TBD, 5),
/* union (anon) */ /* [14] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_UNION, 0, 2), 8),
BTF_MEMBER_ENC(NAME_TBD, 13, 0),/* uint64_t ui64; */
BTF_MEMBER_ENC(NAME_TBD, 8, 0), /* uint8_t ui8a[8]; */
/* enum (anon) */ /* [15] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ENUM, 0, 4), 4),
BTF_ENUM_ENC(NAME_TBD, 0),
BTF_ENUM_ENC(NAME_TBD, 1),
BTF_ENUM_ENC(NAME_TBD, 2),
BTF_ENUM_ENC(NAME_TBD, 3),
/* struct pprint_mapv */ /* [16] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 10), 40),
BTF_MEMBER_ENC(NAME_TBD, 11, 0), /* uint32_t ui32 */
BTF_MEMBER_ENC(NAME_TBD, 10, 32), /* uint16_t ui16 */
BTF_MEMBER_ENC(NAME_TBD, 12, 64), /* int32_t si32 */
BTF_MEMBER_ENC(NAME_TBD, 6, 96), /* unused_bits2a */
BTF_MEMBER_ENC(NAME_TBD, 7, 98), /* bits28 */
BTF_MEMBER_ENC(NAME_TBD, 6, 126), /* unused_bits2b */
BTF_MEMBER_ENC(0, 14, 128), /* union (anon) */
BTF_MEMBER_ENC(NAME_TBD, 15, 192), /* aenum */
BTF_MEMBER_ENC(NAME_TBD, 11, 224), /* uint32_t ui32b */
BTF_MEMBER_ENC(NAME_TBD, 6, 256), /* bits2c */
BTF_END_RAW,
},
BTF_STR_SEC("\0unsigned char\0unsigned short\0unsigned int\0int\0unsigned long long\0uint8_t\0uint16_t\0uint32_t\0int32_t\0uint64_t\0ui64\0ui8a\0ENUM_ZERO\0ENUM_ONE\0ENUM_TWO\0ENUM_THREE\0pprint_mapv\0ui32\0ui16\0si32\0unused_bits2a\0bits28\0unused_bits2b\0aenum\0ui32b\0bits2c"),
.key_size = sizeof(unsigned int),
.value_size = sizeof(struct pprint_mapv),
.key_type_id = 3, /* unsigned int */
.value_type_id = 16, /* struct pprint_mapv */
.max_entries = 128 * 1024,
},
{
/* this type will have the same type as the
* first .raw_types definition, but struct type will
* be encoded with kind_flag set.
*/
.raw_types = {
/* unsighed char */ /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 8, 1),
/* unsigned short */ /* [2] */
BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 16, 2),
/* unsigned int */ /* [3] */
BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 32, 4),
/* int */ /* [4] */
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
/* unsigned long long */ /* [5] */
BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 64, 8),
BTF_TYPE_INT_ENC(0, 0, 0, 32, 4), /* [6] */
BTF_TYPE_INT_ENC(0, 0, 0, 32, 4), /* [7] */
/* uint8_t[8] */ /* [8] */
BTF_TYPE_ARRAY_ENC(9, 1, 8),
/* typedef unsigned char uint8_t */ /* [9] */
BTF_TYPEDEF_ENC(NAME_TBD, 1),
/* typedef unsigned short uint16_t */ /* [10] */
BTF_TYPEDEF_ENC(NAME_TBD, 2),
/* typedef unsigned int uint32_t */ /* [11] */
BTF_TYPEDEF_ENC(NAME_TBD, 3),
/* typedef int int32_t */ /* [12] */
BTF_TYPEDEF_ENC(NAME_TBD, 4),
/* typedef unsigned long long uint64_t *//* [13] */
BTF_TYPEDEF_ENC(NAME_TBD, 5),
/* union (anon) */ /* [14] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_UNION, 0, 2), 8),
BTF_MEMBER_ENC(NAME_TBD, 13, 0),/* uint64_t ui64; */
BTF_MEMBER_ENC(NAME_TBD, 8, 0), /* uint8_t ui8a[8]; */
/* enum (anon) */ /* [15] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ENUM, 0, 4), 4),
BTF_ENUM_ENC(NAME_TBD, 0),
BTF_ENUM_ENC(NAME_TBD, 1),
BTF_ENUM_ENC(NAME_TBD, 2),
BTF_ENUM_ENC(NAME_TBD, 3),
/* struct pprint_mapv */ /* [16] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 10), 40),
BTF_MEMBER_ENC(NAME_TBD, 11, BTF_MEMBER_OFFSET(0, 0)), /* uint32_t ui32 */
BTF_MEMBER_ENC(NAME_TBD, 10, BTF_MEMBER_OFFSET(0, 32)), /* uint16_t ui16 */
BTF_MEMBER_ENC(NAME_TBD, 12, BTF_MEMBER_OFFSET(0, 64)), /* int32_t si32 */
BTF_MEMBER_ENC(NAME_TBD, 6, BTF_MEMBER_OFFSET(2, 96)), /* unused_bits2a */
BTF_MEMBER_ENC(NAME_TBD, 7, BTF_MEMBER_OFFSET(28, 98)), /* bits28 */
BTF_MEMBER_ENC(NAME_TBD, 6, BTF_MEMBER_OFFSET(2, 126)), /* unused_bits2b */
BTF_MEMBER_ENC(0, 14, BTF_MEMBER_OFFSET(0, 128)), /* union (anon) */
BTF_MEMBER_ENC(NAME_TBD, 15, BTF_MEMBER_OFFSET(0, 192)), /* aenum */
BTF_MEMBER_ENC(NAME_TBD, 11, BTF_MEMBER_OFFSET(0, 224)), /* uint32_t ui32b */
BTF_MEMBER_ENC(NAME_TBD, 6, BTF_MEMBER_OFFSET(2, 256)), /* bits2c */
BTF_END_RAW,
},
BTF_STR_SEC("\0unsigned char\0unsigned short\0unsigned int\0int\0unsigned long long\0uint8_t\0uint16_t\0uint32_t\0int32_t\0uint64_t\0ui64\0ui8a\0ENUM_ZERO\0ENUM_ONE\0ENUM_TWO\0ENUM_THREE\0pprint_mapv\0ui32\0ui16\0si32\0unused_bits2a\0bits28\0unused_bits2b\0aenum\0ui32b\0bits2c"),
.key_size = sizeof(unsigned int),
.value_size = sizeof(struct pprint_mapv),
.key_type_id = 3, /* unsigned int */
.value_type_id = 16, /* struct pprint_mapv */
.max_entries = 128 * 1024,
},
{
/* this type will have the same layout as the
* first .raw_types definition. The struct type will
* be encoded with kind_flag set, bitfield members
* are added typedef/const/volatile, and bitfield members
* will have both int and enum types.
*/
.raw_types = {
/* unsighed char */ /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 8, 1),
/* unsigned short */ /* [2] */
BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 16, 2),
/* unsigned int */ /* [3] */
BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 32, 4),
/* int */ /* [4] */
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
/* unsigned long long */ /* [5] */
BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 64, 8),
BTF_TYPE_INT_ENC(0, 0, 0, 32, 4), /* [6] */
BTF_TYPE_INT_ENC(0, 0, 0, 32, 4), /* [7] */
/* uint8_t[8] */ /* [8] */
BTF_TYPE_ARRAY_ENC(9, 1, 8),
/* typedef unsigned char uint8_t */ /* [9] */
BTF_TYPEDEF_ENC(NAME_TBD, 1),
/* typedef unsigned short uint16_t */ /* [10] */
BTF_TYPEDEF_ENC(NAME_TBD, 2),
/* typedef unsigned int uint32_t */ /* [11] */
BTF_TYPEDEF_ENC(NAME_TBD, 3),
/* typedef int int32_t */ /* [12] */
BTF_TYPEDEF_ENC(NAME_TBD, 4),
/* typedef unsigned long long uint64_t *//* [13] */
BTF_TYPEDEF_ENC(NAME_TBD, 5),
/* union (anon) */ /* [14] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_UNION, 0, 2), 8),
BTF_MEMBER_ENC(NAME_TBD, 13, 0),/* uint64_t ui64; */
BTF_MEMBER_ENC(NAME_TBD, 8, 0), /* uint8_t ui8a[8]; */
/* enum (anon) */ /* [15] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ENUM, 0, 4), 4),
BTF_ENUM_ENC(NAME_TBD, 0),
BTF_ENUM_ENC(NAME_TBD, 1),
BTF_ENUM_ENC(NAME_TBD, 2),
BTF_ENUM_ENC(NAME_TBD, 3),
/* struct pprint_mapv */ /* [16] */
BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 10), 40),
BTF_MEMBER_ENC(NAME_TBD, 11, BTF_MEMBER_OFFSET(0, 0)), /* uint32_t ui32 */
BTF_MEMBER_ENC(NAME_TBD, 10, BTF_MEMBER_OFFSET(0, 32)), /* uint16_t ui16 */
BTF_MEMBER_ENC(NAME_TBD, 12, BTF_MEMBER_OFFSET(0, 64)), /* int32_t si32 */
BTF_MEMBER_ENC(NAME_TBD, 17, BTF_MEMBER_OFFSET(2, 96)), /* unused_bits2a */
BTF_MEMBER_ENC(NAME_TBD, 7, BTF_MEMBER_OFFSET(28, 98)), /* bits28 */
BTF_MEMBER_ENC(NAME_TBD, 19, BTF_MEMBER_OFFSET(2, 126)),/* unused_bits2b */
BTF_MEMBER_ENC(0, 14, BTF_MEMBER_OFFSET(0, 128)), /* union (anon) */
BTF_MEMBER_ENC(NAME_TBD, 15, BTF_MEMBER_OFFSET(0, 192)), /* aenum */
BTF_MEMBER_ENC(NAME_TBD, 11, BTF_MEMBER_OFFSET(0, 224)), /* uint32_t ui32b */
BTF_MEMBER_ENC(NAME_TBD, 17, BTF_MEMBER_OFFSET(2, 256)), /* bits2c */
/* typedef unsigned int ___int */ /* [17] */
BTF_TYPEDEF_ENC(NAME_TBD, 18),
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_VOLATILE, 0, 0), 6), /* [18] */
BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 15), /* [19] */
BTF_END_RAW,
},
BTF_STR_SEC("\0unsigned char\0unsigned short\0unsigned int\0int\0unsigned long long\0uint8_t\0uint16_t\0uint32_t\0int32_t\0uint64_t\0ui64\0ui8a\0ENUM_ZERO\0ENUM_ONE\0ENUM_TWO\0ENUM_THREE\0pprint_mapv\0ui32\0ui16\0si32\0unused_bits2a\0bits28\0unused_bits2b\0aenum\0ui32b\0bits2c\0___int"),
.key_size = sizeof(unsigned int),
.value_size = sizeof(struct pprint_mapv),
.key_type_id = 3, /* unsigned int */
.value_type_id = 16, /* struct pprint_mapv */
.max_entries = 128 * 1024,
},
};
static struct btf_pprint_test_meta {
const char *descr;
enum bpf_map_type map_type;
const char *map_name;
bool ordered_map;
bool lossless_map;
bool percpu_map;
} pprint_tests_meta[] = {
{
.descr = "BTF pretty print array",
.map_type = BPF_MAP_TYPE_ARRAY,
.map_name = "pprint_test_array",
.ordered_map = true,
.lossless_map = true,
.percpu_map = false,
},
{
.descr = "BTF pretty print hash",
.map_type = BPF_MAP_TYPE_HASH,
.map_name = "pprint_test_hash",
.ordered_map = false,
.lossless_map = true,
.percpu_map = false,
},
{
.descr = "BTF pretty print lru hash",
.map_type = BPF_MAP_TYPE_LRU_HASH,
.map_name = "pprint_test_lru_hash",
.ordered_map = false,
.lossless_map = false,
.percpu_map = false,
},
{
.descr = "BTF pretty print percpu array",
.map_type = BPF_MAP_TYPE_PERCPU_ARRAY,
.map_name = "pprint_test_percpu_array",
.ordered_map = true,
.lossless_map = true,
.percpu_map = true,
},
{
.descr = "BTF pretty print percpu hash",
.map_type = BPF_MAP_TYPE_PERCPU_HASH,
.map_name = "pprint_test_percpu_hash",
.ordered_map = false,
.lossless_map = true,
.percpu_map = true,
},
{
.descr = "BTF pretty print lru percpu hash",
.map_type = BPF_MAP_TYPE_LRU_PERCPU_HASH,
.map_name = "pprint_test_lru_percpu_hash",
.ordered_map = false,
.lossless_map = false,
.percpu_map = true,
},
};
static void set_pprint_mapv(struct pprint_mapv *v, uint32_t i,
int num_cpus, int rounded_value_size)
{
int cpu;
for (cpu = 0; cpu < num_cpus; cpu++) {
v->ui32 = i + cpu;
v->si32 = -i;
v->unused_bits2a = 3;
v->bits28 = i;
v->unused_bits2b = 3;
v->ui64 = i;
v->aenum = i & 0x03;
v->ui32b = 4;
v->bits2c = 1;
v = (void *)v + rounded_value_size;
}
}
static int check_line(const char *expected_line, int nexpected_line,
int expected_line_len, const char *line)
{
if (CHECK(nexpected_line == expected_line_len,
"expected_line is too long"))
return -1;
if (strcmp(expected_line, line)) {
fprintf(stderr, "unexpected pprint output\n");
fprintf(stderr, "expected: %s", expected_line);
fprintf(stderr, " read: %s", line);
return -1;
}
return 0;
}
static int do_test_pprint(int test_num)
{
const struct btf_raw_test *test = &pprint_test_template[test_num];
struct bpf_create_map_attr create_attr = {};
bool ordered_map, lossless_map, percpu_map;
int err, ret, num_cpus, rounded_value_size;
struct pprint_mapv *mapv = NULL;
unsigned int key, nr_read_elems;
int map_fd = -1, btf_fd = -1;
unsigned int raw_btf_size;
char expected_line[255];
FILE *pin_file = NULL;
char pin_path[255];
size_t line_len = 0;
char *line = NULL;
uint8_t *raw_btf;
ssize_t nread;
fprintf(stderr, "%s(#%d)......", test->descr, test_num);
raw_btf = btf_raw_create(&hdr_tmpl, test->raw_types,
test->str_sec, test->str_sec_size,
&raw_btf_size, NULL);
if (!raw_btf)
return -1;
*btf_log_buf = '\0';
btf_fd = bpf_load_btf(raw_btf, raw_btf_size,
btf_log_buf, BTF_LOG_BUF_SIZE,
args.always_log);
free(raw_btf);
if (CHECK(btf_fd == -1, "errno:%d", errno)) {
err = -1;
goto done;
}
create_attr.name = test->map_name;
create_attr.map_type = test->map_type;
create_attr.key_size = test->key_size;
create_attr.value_size = test->value_size;
create_attr.max_entries = test->max_entries;
create_attr.btf_fd = btf_fd;
create_attr.btf_key_type_id = test->key_type_id;
create_attr.btf_value_type_id = test->value_type_id;
map_fd = bpf_create_map_xattr(&create_attr);
if (CHECK(map_fd == -1, "errno:%d", errno)) {
err = -1;
goto done;
}
ret = snprintf(pin_path, sizeof(pin_path), "%s/%s",
"/sys/fs/bpf", test->map_name);
if (CHECK(ret == sizeof(pin_path), "pin_path %s/%s is too long",
"/sys/fs/bpf", test->map_name)) {
err = -1;
goto done;
}
err = bpf_obj_pin(map_fd, pin_path);
if (CHECK(err, "bpf_obj_pin(%s): errno:%d.", pin_path, errno))
goto done;
percpu_map = test->percpu_map;
num_cpus = percpu_map ? bpf_num_possible_cpus() : 1;
rounded_value_size = round_up(sizeof(struct pprint_mapv), 8);
mapv = calloc(num_cpus, rounded_value_size);
if (CHECK(!mapv, "mapv allocation failure")) {
err = -1;
goto done;
}
for (key = 0; key < test->max_entries; key++) {
set_pprint_mapv(mapv, key, num_cpus, rounded_value_size);
bpf_map_update_elem(map_fd, &key, mapv, 0);
}
pin_file = fopen(pin_path, "r");
if (CHECK(!pin_file, "fopen(%s): errno:%d", pin_path, errno)) {
err = -1;
goto done;
}
/* Skip lines start with '#' */
while ((nread = getline(&line, &line_len, pin_file)) > 0 &&
*line == '#')
;
if (CHECK(nread <= 0, "Unexpected EOF")) {
err = -1;
goto done;
}
nr_read_elems = 0;
ordered_map = test->ordered_map;
lossless_map = test->lossless_map;
do {
struct pprint_mapv *cmapv;
ssize_t nexpected_line;
unsigned int next_key;
int cpu;
next_key = ordered_map ? nr_read_elems : atoi(line);
set_pprint_mapv(mapv, next_key, num_cpus, rounded_value_size);
cmapv = mapv;
for (cpu = 0; cpu < num_cpus; cpu++) {
if (percpu_map) {
/* for percpu map, the format looks like:
* <key>: {
* cpu0: <value_on_cpu0>
* cpu1: <value_on_cpu1>
* ...
* cpun: <value_on_cpun>
* }
*
* let us verify the line containing the key here.
*/
if (cpu == 0) {
nexpected_line = snprintf(expected_line,
sizeof(expected_line),
"%u: {\n",
next_key);
err = check_line(expected_line, nexpected_line,
sizeof(expected_line), line);
if (err == -1)
goto done;
}
/* read value@cpu */
nread = getline(&line, &line_len, pin_file);
if (nread < 0)
break;
}
nexpected_line = snprintf(expected_line, sizeof(expected_line),
"%s%u: {%u,0,%d,0x%x,0x%x,0x%x,"
"{%lu|[%u,%u,%u,%u,%u,%u,%u,%u]},%s,"
"%u,0x%x}\n",
percpu_map ? "\tcpu" : "",
percpu_map ? cpu : next_key,
cmapv->ui32, cmapv->si32,
cmapv->unused_bits2a,
cmapv->bits28,
cmapv->unused_bits2b,
cmapv->ui64,
cmapv->ui8a[0], cmapv->ui8a[1],
cmapv->ui8a[2], cmapv->ui8a[3],
cmapv->ui8a[4], cmapv->ui8a[5],
cmapv->ui8a[6], cmapv->ui8a[7],
pprint_enum_str[cmapv->aenum],
cmapv->ui32b,
cmapv->bits2c);
err = check_line(expected_line, nexpected_line,
sizeof(expected_line), line);
if (err == -1)
goto done;
cmapv = (void *)cmapv + rounded_value_size;
}
if (percpu_map) {
/* skip the last bracket for the percpu map */
nread = getline(&line, &line_len, pin_file);
if (nread < 0)
break;
}
nread = getline(&line, &line_len, pin_file);
} while (++nr_read_elems < test->max_entries && nread > 0);
if (lossless_map &&
CHECK(nr_read_elems < test->max_entries,
"Unexpected EOF. nr_read_elems:%u test->max_entries:%u",
nr_read_elems, test->max_entries)) {
err = -1;
goto done;
}
if (CHECK(nread > 0, "Unexpected extra pprint output: %s", line)) {
err = -1;
goto done;
}
err = 0;
done:
if (mapv)
free(mapv);
if (!err)
fprintf(stderr, "OK");
if (*btf_log_buf && (err || args.always_log))
fprintf(stderr, "\n%s", btf_log_buf);
if (btf_fd != -1)
close(btf_fd);
if (map_fd != -1)
close(map_fd);
if (pin_file)
fclose(pin_file);
unlink(pin_path);
free(line);
return err;
}
static int test_pprint(void)
{
unsigned int i;
int err = 0;
/* test various maps with the first test template */
for (i = 0; i < ARRAY_SIZE(pprint_tests_meta); i++) {
pprint_test_template[0].descr = pprint_tests_meta[i].descr;
pprint_test_template[0].map_type = pprint_tests_meta[i].map_type;
pprint_test_template[0].map_name = pprint_tests_meta[i].map_name;
pprint_test_template[0].ordered_map = pprint_tests_meta[i].ordered_map;
pprint_test_template[0].lossless_map = pprint_tests_meta[i].lossless_map;
pprint_test_template[0].percpu_map = pprint_tests_meta[i].percpu_map;
err |= count_result(do_test_pprint(0));
}
/* test rest test templates with the first map */
for (i = 1; i < ARRAY_SIZE(pprint_test_template); i++) {
pprint_test_template[i].descr = pprint_tests_meta[0].descr;
pprint_test_template[i].map_type = pprint_tests_meta[0].map_type;
pprint_test_template[i].map_name = pprint_tests_meta[0].map_name;
pprint_test_template[i].ordered_map = pprint_tests_meta[0].ordered_map;
pprint_test_template[i].lossless_map = pprint_tests_meta[0].lossless_map;
pprint_test_template[i].percpu_map = pprint_tests_meta[0].percpu_map;
err |= count_result(do_test_pprint(i));
}
return err;
}
#define BPF_LINE_INFO_ENC(insn_off, file_off, line_off, line_num, line_col) \
(insn_off), (file_off), (line_off), ((line_num) << 10 | ((line_col) & 0x3ff))
static struct prog_info_raw_test {
const char *descr;
const char *str_sec;
const char *err_str;
__u32 raw_types[MAX_NR_RAW_U32];
__u32 str_sec_size;
struct bpf_insn insns[MAX_INSNS];
__u32 prog_type;
__u32 func_info[MAX_SUBPROGS][2];
__u32 func_info_rec_size;
__u32 func_info_cnt;
__u32 line_info[MAX_NR_RAW_U32];
__u32 line_info_rec_size;
__u32 nr_jited_ksyms;
bool expected_prog_load_failure;
} info_raw_tests[] = {
{
.descr = "func_type (main func + one sub)",
.raw_types = {
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 32, 4), /* [2] */
BTF_FUNC_PROTO_ENC(1, 2), /* [3] */
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
BTF_FUNC_PROTO_ENC(1, 2), /* [4] */
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
BTF_FUNC_ENC(NAME_TBD, 3), /* [5] */
BTF_FUNC_ENC(NAME_TBD, 4), /* [6] */
BTF_END_RAW,
},
.str_sec = "\0int\0unsigned int\0a\0b\0c\0d\0funcA\0funcB",
.str_sec_size = sizeof("\0int\0unsigned int\0a\0b\0c\0d\0funcA\0funcB"),
.insns = {
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 1),
BPF_EXIT_INSN(),
BPF_MOV64_IMM(BPF_REG_0, 2),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_TRACEPOINT,
.func_info = { {0, 5}, {3, 6} },
.func_info_rec_size = 8,
.func_info_cnt = 2,
.line_info = { BTF_END_RAW },
},
{
.descr = "func_type (Incorrect func_info_rec_size)",
.raw_types = {
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 32, 4), /* [2] */
BTF_FUNC_PROTO_ENC(1, 2), /* [3] */
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
BTF_FUNC_PROTO_ENC(1, 2), /* [4] */
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
BTF_FUNC_ENC(NAME_TBD, 3), /* [5] */
BTF_FUNC_ENC(NAME_TBD, 4), /* [6] */
BTF_END_RAW,
},
.str_sec = "\0int\0unsigned int\0a\0b\0c\0d\0funcA\0funcB",
.str_sec_size = sizeof("\0int\0unsigned int\0a\0b\0c\0d\0funcA\0funcB"),
.insns = {
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 1),
BPF_EXIT_INSN(),
BPF_MOV64_IMM(BPF_REG_0, 2),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_TRACEPOINT,
.func_info = { {0, 5}, {3, 6} },
.func_info_rec_size = 4,
.func_info_cnt = 2,
.line_info = { BTF_END_RAW },
.expected_prog_load_failure = true,
},
{
.descr = "func_type (Incorrect func_info_cnt)",
.raw_types = {
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 32, 4), /* [2] */
BTF_FUNC_PROTO_ENC(1, 2), /* [3] */
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
BTF_FUNC_PROTO_ENC(1, 2), /* [4] */
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
BTF_FUNC_ENC(NAME_TBD, 3), /* [5] */
BTF_FUNC_ENC(NAME_TBD, 4), /* [6] */
BTF_END_RAW,
},
.str_sec = "\0int\0unsigned int\0a\0b\0c\0d\0funcA\0funcB",
.str_sec_size = sizeof("\0int\0unsigned int\0a\0b\0c\0d\0funcA\0funcB"),
.insns = {
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 1),
BPF_EXIT_INSN(),
BPF_MOV64_IMM(BPF_REG_0, 2),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_TRACEPOINT,
.func_info = { {0, 5}, {3, 6} },
.func_info_rec_size = 8,
.func_info_cnt = 1,
.line_info = { BTF_END_RAW },
.expected_prog_load_failure = true,
},
{
.descr = "func_type (Incorrect bpf_func_info.insn_off)",
.raw_types = {
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 32, 4), /* [2] */
BTF_FUNC_PROTO_ENC(1, 2), /* [3] */
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
BTF_FUNC_PROTO_ENC(1, 2), /* [4] */
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
BTF_FUNC_ENC(NAME_TBD, 3), /* [5] */
BTF_FUNC_ENC(NAME_TBD, 4), /* [6] */
BTF_END_RAW,
},
.str_sec = "\0int\0unsigned int\0a\0b\0c\0d\0funcA\0funcB",
.str_sec_size = sizeof("\0int\0unsigned int\0a\0b\0c\0d\0funcA\0funcB"),
.insns = {
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2),
BPF_MOV64_IMM(BPF_REG_0, 1),
BPF_EXIT_INSN(),
BPF_MOV64_IMM(BPF_REG_0, 2),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_TRACEPOINT,
.func_info = { {0, 5}, {2, 6} },
.func_info_rec_size = 8,
.func_info_cnt = 2,
.line_info = { BTF_END_RAW },
.expected_prog_load_failure = true,
},
{
.descr = "line_info (No subprog)",
.raw_types = {
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_END_RAW,
},
BTF_STR_SEC("\0int\0int a=1;\0int b=2;\0return a + b;\0return a + b;"),
.insns = {
BPF_MOV64_IMM(BPF_REG_0, 1),
BPF_MOV64_IMM(BPF_REG_1, 2),
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_TRACEPOINT,
.func_info_cnt = 0,
.line_info = {
BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10),
BPF_LINE_INFO_ENC(1, 0, NAME_TBD, 2, 9),
BPF_LINE_INFO_ENC(2, 0, NAME_TBD, 3, 8),
BPF_LINE_INFO_ENC(3, 0, NAME_TBD, 4, 7),
BTF_END_RAW,
},
.line_info_rec_size = sizeof(struct bpf_line_info),
.nr_jited_ksyms = 1,
},
{
.descr = "line_info (No subprog. insn_off >= prog->len)",
.raw_types = {
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_END_RAW,
},
BTF_STR_SEC("\0int\0int a=1;\0int b=2;\0return a + b;\0return a + b;"),
.insns = {
BPF_MOV64_IMM(BPF_REG_0, 1),
BPF_MOV64_IMM(BPF_REG_1, 2),
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_TRACEPOINT,
.func_info_cnt = 0,
.line_info = {
BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10),
BPF_LINE_INFO_ENC(1, 0, NAME_TBD, 2, 9),
BPF_LINE_INFO_ENC(2, 0, NAME_TBD, 3, 8),
BPF_LINE_INFO_ENC(3, 0, NAME_TBD, 4, 7),
BPF_LINE_INFO_ENC(4, 0, 0, 5, 6),
BTF_END_RAW,
},
.line_info_rec_size = sizeof(struct bpf_line_info),
.nr_jited_ksyms = 1,
.err_str = "line_info[4].insn_off",
.expected_prog_load_failure = true,
},
{
.descr = "line_info (Zero bpf insn code)",
.raw_types = {
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 64, 8), /* [2] */
BTF_TYPEDEF_ENC(NAME_TBD, 2), /* [3] */
BTF_END_RAW,
},
BTF_STR_SEC("\0int\0unsigned long\0u64\0u64 a=1;\0return a;"),
.insns = {
BPF_LD_IMM64(BPF_REG_0, 1),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_TRACEPOINT,
.func_info_cnt = 0,
.line_info = {
BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10),
BPF_LINE_INFO_ENC(1, 0, 0, 2, 9),
BPF_LINE_INFO_ENC(2, 0, NAME_TBD, 3, 8),
BTF_END_RAW,
},
.line_info_rec_size = sizeof(struct bpf_line_info),
.nr_jited_ksyms = 1,
.err_str = "Invalid insn code at line_info[1]",
.expected_prog_load_failure = true,
},
{
.descr = "line_info (No subprog. zero tailing line_info",
.raw_types = {
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_END_RAW,
},
BTF_STR_SEC("\0int\0int a=1;\0int b=2;\0return a + b;\0return a + b;"),
.insns = {
BPF_MOV64_IMM(BPF_REG_0, 1),
BPF_MOV64_IMM(BPF_REG_1, 2),
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_TRACEPOINT,
.func_info_cnt = 0,
.line_info = {
BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10), 0,
BPF_LINE_INFO_ENC(1, 0, NAME_TBD, 2, 9), 0,
BPF_LINE_INFO_ENC(2, 0, NAME_TBD, 3, 8), 0,
BPF_LINE_INFO_ENC(3, 0, NAME_TBD, 4, 7), 0,
BTF_END_RAW,
},
.line_info_rec_size = sizeof(struct bpf_line_info) + sizeof(__u32),
.nr_jited_ksyms = 1,
},
{
.descr = "line_info (No subprog. nonzero tailing line_info)",
.raw_types = {
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_END_RAW,
},
BTF_STR_SEC("\0int\0int a=1;\0int b=2;\0return a + b;\0return a + b;"),
.insns = {
BPF_MOV64_IMM(BPF_REG_0, 1),
BPF_MOV64_IMM(BPF_REG_1, 2),
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_TRACEPOINT,
.func_info_cnt = 0,
.line_info = {
BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10), 0,
BPF_LINE_INFO_ENC(1, 0, NAME_TBD, 2, 9), 0,
BPF_LINE_INFO_ENC(2, 0, NAME_TBD, 3, 8), 0,
BPF_LINE_INFO_ENC(3, 0, NAME_TBD, 4, 7), 1,
BTF_END_RAW,
},
.line_info_rec_size = sizeof(struct bpf_line_info) + sizeof(__u32),
.nr_jited_ksyms = 1,
.err_str = "nonzero tailing record in line_info",
.expected_prog_load_failure = true,
},
{
.descr = "line_info (subprog)",
.raw_types = {
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_END_RAW,
},
BTF_STR_SEC("\0int\0int a=1+1;\0return func(a);\0b+=1;\0return b;"),
.insns = {
BPF_MOV64_IMM(BPF_REG_2, 1),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 1),
BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
BPF_CALL_REL(1),
BPF_EXIT_INSN(),
BPF_MOV64_REG(BPF_REG_0, BPF_REG_1),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 1),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_TRACEPOINT,
.func_info_cnt = 0,
.line_info = {
BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10),
BPF_LINE_INFO_ENC(2, 0, NAME_TBD, 2, 9),
BPF_LINE_INFO_ENC(5, 0, NAME_TBD, 3, 8),
BPF_LINE_INFO_ENC(7, 0, NAME_TBD, 4, 7),
BTF_END_RAW,
},
.line_info_rec_size = sizeof(struct bpf_line_info),
.nr_jited_ksyms = 2,
},
{
.descr = "line_info (subprog + func_info)",
.raw_types = {
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_FUNC_PROTO_ENC(1, 1), /* [2] */
BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
BTF_FUNC_ENC(NAME_TBD, 2), /* [3] */
BTF_FUNC_ENC(NAME_TBD, 2), /* [4] */
BTF_END_RAW,
},
BTF_STR_SEC("\0int\0x\0sub\0main\0int a=1+1;\0return func(a);\0b+=1;\0return b;"),
.insns = {
BPF_MOV64_IMM(BPF_REG_2, 1),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 1),
BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
BPF_CALL_REL(1),
BPF_EXIT_INSN(),
BPF_MOV64_REG(BPF_REG_0, BPF_REG_1),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 1),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_TRACEPOINT,
.func_info_cnt = 2,
.func_info_rec_size = 8,
.func_info = { {0, 4}, {5, 3} },
.line_info = {
BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10),
BPF_LINE_INFO_ENC(2, 0, NAME_TBD, 2, 9),
BPF_LINE_INFO_ENC(5, 0, NAME_TBD, 3, 8),
BPF_LINE_INFO_ENC(7, 0, NAME_TBD, 4, 7),
BTF_END_RAW,
},
.line_info_rec_size = sizeof(struct bpf_line_info),
.nr_jited_ksyms = 2,
},
{
.descr = "line_info (subprog. missing 1st func line info)",
.raw_types = {
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_END_RAW,
},
BTF_STR_SEC("\0int\0int a=1+1;\0return func(a);\0b+=1;\0return b;"),
.insns = {
BPF_MOV64_IMM(BPF_REG_2, 1),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 1),
BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
BPF_CALL_REL(1),
BPF_EXIT_INSN(),
BPF_MOV64_REG(BPF_REG_0, BPF_REG_1),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 1),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_TRACEPOINT,
.func_info_cnt = 0,
.line_info = {
BPF_LINE_INFO_ENC(1, 0, NAME_TBD, 1, 10),
BPF_LINE_INFO_ENC(2, 0, NAME_TBD, 2, 9),
BPF_LINE_INFO_ENC(5, 0, NAME_TBD, 3, 8),
BPF_LINE_INFO_ENC(7, 0, NAME_TBD, 4, 7),
BTF_END_RAW,
},
.line_info_rec_size = sizeof(struct bpf_line_info),
.nr_jited_ksyms = 2,
.err_str = "missing bpf_line_info for func#0",
.expected_prog_load_failure = true,
},
{
.descr = "line_info (subprog. missing 2nd func line info)",
.raw_types = {
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_END_RAW,
},
BTF_STR_SEC("\0int\0int a=1+1;\0return func(a);\0b+=1;\0return b;"),
.insns = {
BPF_MOV64_IMM(BPF_REG_2, 1),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 1),
BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
BPF_CALL_REL(1),
BPF_EXIT_INSN(),
BPF_MOV64_REG(BPF_REG_0, BPF_REG_1),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 1),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_TRACEPOINT,
.func_info_cnt = 0,
.line_info = {
BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10),
BPF_LINE_INFO_ENC(2, 0, NAME_TBD, 2, 9),
BPF_LINE_INFO_ENC(6, 0, NAME_TBD, 3, 8),
BPF_LINE_INFO_ENC(7, 0, NAME_TBD, 4, 7),
BTF_END_RAW,
},
.line_info_rec_size = sizeof(struct bpf_line_info),
.nr_jited_ksyms = 2,
.err_str = "missing bpf_line_info for func#1",
.expected_prog_load_failure = true,
},
{
.descr = "line_info (subprog. unordered insn offset)",
.raw_types = {
BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_END_RAW,
},
BTF_STR_SEC("\0int\0int a=1+1;\0return func(a);\0b+=1;\0return b;"),
.insns = {
BPF_MOV64_IMM(BPF_REG_2, 1),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 1),
BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
BPF_CALL_REL(1),
BPF_EXIT_INSN(),
BPF_MOV64_REG(BPF_REG_0, BPF_REG_1),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 1),
BPF_EXIT_INSN(),
},
.prog_type = BPF_PROG_TYPE_TRACEPOINT,
.func_info_cnt = 0,
.line_info = {
BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10),
BPF_LINE_INFO_ENC(5, 0, NAME_TBD, 2, 9),
BPF_LINE_INFO_ENC(2, 0, NAME_TBD, 3, 8),
BPF_LINE_INFO_ENC(7, 0, NAME_TBD, 4, 7),
BTF_END_RAW,
},
.line_info_rec_size = sizeof(struct bpf_line_info),
.nr_jited_ksyms = 2,
.err_str = "Invalid line_info[2].insn_off",
.expected_prog_load_failure = true,
},
};
static size_t probe_prog_length(const struct bpf_insn *fp)
{
size_t len;
for (len = MAX_INSNS - 1; len > 0; --len)
if (fp[len].code != 0 || fp[len].imm != 0)
break;
return len + 1;
}
static __u32 *patch_name_tbd(const __u32 *raw_u32,
const char *str, __u32 str_off,
unsigned int str_sec_size,
unsigned int *ret_size)
{
int i, raw_u32_size = get_raw_sec_size(raw_u32);
const char *end_str = str + str_sec_size;
const char *next_str = str + str_off;
__u32 *new_u32 = NULL;
if (raw_u32_size == -1)
return ERR_PTR(-EINVAL);
if (!raw_u32_size) {
*ret_size = 0;
return NULL;
}
new_u32 = malloc(raw_u32_size);
if (!new_u32)
return ERR_PTR(-ENOMEM);
for (i = 0; i < raw_u32_size / sizeof(raw_u32[0]); i++) {
if (raw_u32[i] == NAME_TBD) {
next_str = get_next_str(next_str, end_str);
if (CHECK(!next_str, "Error in getting next_str\n")) {
free(new_u32);
return ERR_PTR(-EINVAL);
}
new_u32[i] = next_str - str;
next_str += strlen(next_str);
} else {
new_u32[i] = raw_u32[i];
}
}
*ret_size = raw_u32_size;
return new_u32;
}
static int test_get_finfo(const struct prog_info_raw_test *test,
int prog_fd)
{
struct bpf_prog_info info = {};
struct bpf_func_info *finfo;
__u32 info_len, rec_size, i;
void *func_info = NULL;
int err;
/* get necessary lens */
info_len = sizeof(struct bpf_prog_info);
err = bpf_obj_get_info_by_fd(prog_fd, &info, &info_len);
if (CHECK(err == -1, "invalid get info (1st) errno:%d", errno)) {
fprintf(stderr, "%s\n", btf_log_buf);
return -1;
}
if (CHECK(info.nr_func_info != test->func_info_cnt,
"incorrect info.nr_func_info (1st) %d",
info.nr_func_info)) {
return -1;
}
rec_size = info.func_info_rec_size;
if (CHECK(rec_size != sizeof(struct bpf_func_info),
"incorrect info.func_info_rec_size (1st) %d", rec_size)) {
return -1;
}
if (!info.nr_func_info)
return 0;
func_info = malloc(info.nr_func_info * rec_size);
if (CHECK(!func_info, "out of memory"))
return -1;
/* reset info to only retrieve func_info related data */
memset(&info, 0, sizeof(info));
info.nr_func_info = test->func_info_cnt;
info.func_info_rec_size = rec_size;
info.func_info = ptr_to_u64(func_info);
err = bpf_obj_get_info_by_fd(prog_fd, &info, &info_len);
if (CHECK(err == -1, "invalid get info (2nd) errno:%d", errno)) {
fprintf(stderr, "%s\n", btf_log_buf);
err = -1;
goto done;
}
if (CHECK(info.nr_func_info != test->func_info_cnt,
"incorrect info.nr_func_info (2nd) %d",
info.nr_func_info)) {
err = -1;
goto done;
}
if (CHECK(info.func_info_rec_size != rec_size,
"incorrect info.func_info_rec_size (2nd) %d",
info.func_info_rec_size)) {
err = -1;
goto done;
}
finfo = func_info;
for (i = 0; i < test->func_info_cnt; i++) {
if (CHECK(finfo->type_id != test->func_info[i][1],
"incorrect func_type %u expected %u",
finfo->type_id, test->func_info[i][1])) {
err = -1;
goto done;
}
finfo = (void *)finfo + rec_size;
}
err = 0;
done:
free(func_info);
return err;
}
static int test_get_linfo(const struct prog_info_raw_test *test,
const void *patched_linfo,
__u32 cnt, int prog_fd)
{
__u32 i, info_len, nr_jited_ksyms, nr_jited_func_lens;
__u64 *jited_linfo = NULL, *jited_ksyms = NULL;
__u32 rec_size, jited_rec_size, jited_cnt;
struct bpf_line_info *linfo = NULL;
__u32 cur_func_len, ksyms_found;
struct bpf_prog_info info = {};
__u32 *jited_func_lens = NULL;
__u64 cur_func_ksyms;
int err;
jited_cnt = cnt;
rec_size = sizeof(*linfo);
jited_rec_size = sizeof(*jited_linfo);
if (test->nr_jited_ksyms)
nr_jited_ksyms = test->nr_jited_ksyms;
else
nr_jited_ksyms = test->func_info_cnt;
nr_jited_func_lens = nr_jited_ksyms;
info_len = sizeof(struct bpf_prog_info);
err = bpf_obj_get_info_by_fd(prog_fd, &info, &info_len);
if (CHECK(err == -1, "err:%d errno:%d", err, errno)) {
err = -1;
goto done;
}
if (!info.jited_prog_len) {
/* prog is not jited */
jited_cnt = 0;
nr_jited_ksyms = 1;
nr_jited_func_lens = 1;
}
if (CHECK(info.nr_line_info != cnt ||
info.nr_jited_line_info != jited_cnt ||
info.nr_jited_ksyms != nr_jited_ksyms ||
info.nr_jited_func_lens != nr_jited_func_lens ||
(!info.nr_line_info && info.nr_jited_line_info),
"info: nr_line_info:%u(expected:%u) nr_jited_line_info:%u(expected:%u) nr_jited_ksyms:%u(expected:%u) nr_jited_func_lens:%u(expected:%u)",
info.nr_line_info, cnt,
info.nr_jited_line_info, jited_cnt,
info.nr_jited_ksyms, nr_jited_ksyms,
info.nr_jited_func_lens, nr_jited_func_lens)) {
err = -1;
goto done;
}
if (CHECK(info.line_info_rec_size != sizeof(struct bpf_line_info) ||
info.jited_line_info_rec_size != sizeof(__u64),
"info: line_info_rec_size:%u(userspace expected:%u) jited_line_info_rec_size:%u(userspace expected:%u)",
info.line_info_rec_size, rec_size,
info.jited_line_info_rec_size, jited_rec_size)) {
err = -1;
goto done;
}
if (!cnt)
return 0;
rec_size = info.line_info_rec_size;
jited_rec_size = info.jited_line_info_rec_size;
memset(&info, 0, sizeof(info));
linfo = calloc(cnt, rec_size);
if (CHECK(!linfo, "!linfo")) {
err = -1;
goto done;
}
info.nr_line_info = cnt;
info.line_info_rec_size = rec_size;
info.line_info = ptr_to_u64(linfo);
if (jited_cnt) {
jited_linfo = calloc(jited_cnt, jited_rec_size);
jited_ksyms = calloc(nr_jited_ksyms, sizeof(*jited_ksyms));
jited_func_lens = calloc(nr_jited_func_lens,
sizeof(*jited_func_lens));
if (CHECK(!jited_linfo || !jited_ksyms || !jited_func_lens,
"jited_linfo:%p jited_ksyms:%p jited_func_lens:%p",
jited_linfo, jited_ksyms, jited_func_lens)) {
err = -1;
goto done;
}
info.nr_jited_line_info = jited_cnt;
info.jited_line_info_rec_size = jited_rec_size;
info.jited_line_info = ptr_to_u64(jited_linfo);
info.nr_jited_ksyms = nr_jited_ksyms;
info.jited_ksyms = ptr_to_u64(jited_ksyms);
info.nr_jited_func_lens = nr_jited_func_lens;
info.jited_func_lens = ptr_to_u64(jited_func_lens);
}
err = bpf_obj_get_info_by_fd(prog_fd, &info, &info_len);
/*
* Only recheck the info.*line_info* fields.
* Other fields are not the concern of this test.
*/
if (CHECK(err == -1 ||
info.nr_line_info != cnt ||
(jited_cnt && !info.jited_line_info) ||
info.nr_jited_line_info != jited_cnt ||
info.line_info_rec_size != rec_size ||
info.jited_line_info_rec_size != jited_rec_size,
"err:%d errno:%d info: nr_line_info:%u(expected:%u) nr_jited_line_info:%u(expected:%u) line_info_rec_size:%u(expected:%u) jited_linfo_rec_size:%u(expected:%u) line_info:%p jited_line_info:%p",
err, errno,
info.nr_line_info, cnt,
info.nr_jited_line_info, jited_cnt,
info.line_info_rec_size, rec_size,
info.jited_line_info_rec_size, jited_rec_size,
(void *)(long)info.line_info,
(void *)(long)info.jited_line_info)) {
err = -1;
goto done;
}
CHECK(linfo[0].insn_off, "linfo[0].insn_off:%u",
linfo[0].insn_off);
for (i = 1; i < cnt; i++) {
const struct bpf_line_info *expected_linfo;
expected_linfo = patched_linfo + (i * test->line_info_rec_size);
if (CHECK(linfo[i].insn_off <= linfo[i - 1].insn_off,
"linfo[%u].insn_off:%u <= linfo[%u].insn_off:%u",
i, linfo[i].insn_off,
i - 1, linfo[i - 1].insn_off)) {
err = -1;
goto done;
}
if (CHECK(linfo[i].file_name_off != expected_linfo->file_name_off ||
linfo[i].line_off != expected_linfo->line_off ||
linfo[i].line_col != expected_linfo->line_col,
"linfo[%u] (%u, %u, %u) != (%u, %u, %u)", i,
linfo[i].file_name_off,
linfo[i].line_off,
linfo[i].line_col,
expected_linfo->file_name_off,
expected_linfo->line_off,
expected_linfo->line_col)) {
err = -1;
goto done;
}
}
if (!jited_cnt) {
fprintf(stderr, "not jited. skipping jited_line_info check. ");
err = 0;
goto done;
}
if (CHECK(jited_linfo[0] != jited_ksyms[0],
"jited_linfo[0]:%lx != jited_ksyms[0]:%lx",
(long)(jited_linfo[0]), (long)(jited_ksyms[0]))) {
err = -1;
goto done;
}
ksyms_found = 1;
cur_func_len = jited_func_lens[0];
cur_func_ksyms = jited_ksyms[0];
for (i = 1; i < jited_cnt; i++) {
if (ksyms_found < nr_jited_ksyms &&
jited_linfo[i] == jited_ksyms[ksyms_found]) {
cur_func_ksyms = jited_ksyms[ksyms_found];
cur_func_len = jited_ksyms[ksyms_found];
ksyms_found++;
continue;
}
if (CHECK(jited_linfo[i] <= jited_linfo[i - 1],
"jited_linfo[%u]:%lx <= jited_linfo[%u]:%lx",
i, (long)jited_linfo[i],
i - 1, (long)(jited_linfo[i - 1]))) {
err = -1;
goto done;
}
if (CHECK(jited_linfo[i] - cur_func_ksyms > cur_func_len,
"jited_linfo[%u]:%lx - %lx > %u",
i, (long)jited_linfo[i], (long)cur_func_ksyms,
cur_func_len)) {
err = -1;
goto done;
}
}
if (CHECK(ksyms_found != nr_jited_ksyms,
"ksyms_found:%u != nr_jited_ksyms:%u",
ksyms_found, nr_jited_ksyms)) {
err = -1;
goto done;
}
err = 0;
done:
free(linfo);
free(jited_linfo);
free(jited_ksyms);
free(jited_func_lens);
return err;
}
static int do_test_info_raw(unsigned int test_num)
{
const struct prog_info_raw_test *test = &info_raw_tests[test_num - 1];
unsigned int raw_btf_size, linfo_str_off, linfo_size;
int btf_fd = -1, prog_fd = -1, err = 0;
void *raw_btf, *patched_linfo = NULL;
const char *ret_next_str;
union bpf_attr attr = {};
fprintf(stderr, "BTF prog info raw test[%u] (%s): ", test_num, test->descr);
raw_btf = btf_raw_create(&hdr_tmpl, test->raw_types,
test->str_sec, test->str_sec_size,
&raw_btf_size, &ret_next_str);
if (!raw_btf)
return -1;
*btf_log_buf = '\0';
btf_fd = bpf_load_btf(raw_btf, raw_btf_size,
btf_log_buf, BTF_LOG_BUF_SIZE,
args.always_log);
free(raw_btf);
if (CHECK(btf_fd == -1, "invalid btf_fd errno:%d", errno)) {
err = -1;
goto done;
}
if (*btf_log_buf && args.always_log)
fprintf(stderr, "\n%s", btf_log_buf);
*btf_log_buf = '\0';
linfo_str_off = ret_next_str - test->str_sec;
patched_linfo = patch_name_tbd(test->line_info,
test->str_sec, linfo_str_off,
test->str_sec_size, &linfo_size);
if (IS_ERR(patched_linfo)) {
fprintf(stderr, "error in creating raw bpf_line_info");
err = -1;
goto done;
}
attr.prog_type = test->prog_type;
attr.insns = ptr_to_u64(test->insns);
attr.insn_cnt = probe_prog_length(test->insns);
attr.license = ptr_to_u64("GPL");
attr.prog_btf_fd = btf_fd;
attr.func_info_rec_size = test->func_info_rec_size;
attr.func_info_cnt = test->func_info_cnt;
attr.func_info = ptr_to_u64(test->func_info);
attr.log_buf = ptr_to_u64(btf_log_buf);
attr.log_size = BTF_LOG_BUF_SIZE;
attr.log_level = 1;
if (linfo_size) {
attr.line_info_rec_size = test->line_info_rec_size;
attr.line_info = ptr_to_u64(patched_linfo);
attr.line_info_cnt = linfo_size / attr.line_info_rec_size;
}
prog_fd = syscall(__NR_bpf, BPF_PROG_LOAD, &attr, sizeof(attr));
err = ((prog_fd == -1) != test->expected_prog_load_failure);
if (CHECK(err, "prog_fd:%d expected_prog_load_failure:%u errno:%d",
prog_fd, test->expected_prog_load_failure, errno) ||
CHECK(test->err_str && !strstr(btf_log_buf, test->err_str),
"expected err_str:%s", test->err_str)) {
err = -1;
goto done;
}
if (prog_fd == -1)
goto done;
err = test_get_finfo(test, prog_fd);
if (err)
goto done;
err = test_get_linfo(test, patched_linfo, attr.line_info_cnt, prog_fd);
if (err)
goto done;
done:
if (!err)
fprintf(stderr, "OK");
if (*btf_log_buf && (err || args.always_log))
fprintf(stderr, "\n%s", btf_log_buf);
if (btf_fd != -1)
close(btf_fd);
if (prog_fd != -1)
close(prog_fd);
if (!IS_ERR(patched_linfo))
free(patched_linfo);
return err;
}
static int test_info_raw(void)
{
unsigned int i;
int err = 0;
if (args.info_raw_test_num)
return count_result(do_test_info_raw(args.info_raw_test_num));
for (i = 1; i <= ARRAY_SIZE(info_raw_tests); i++)
err |= count_result(do_test_info_raw(i));
return err;
}
static void usage(const char *cmd)
{
fprintf(stderr, "Usage: %s [-l] [[-r btf_raw_test_num (1 - %zu)] |\n"
"\t[-g btf_get_info_test_num (1 - %zu)] |\n"
"\t[-f btf_file_test_num (1 - %zu)] |\n"
"\t[-k btf_prog_info_raw_test_num (1 - %zu)] |\n"
"\t[-p (pretty print test)]]\n",
cmd, ARRAY_SIZE(raw_tests), ARRAY_SIZE(get_info_tests),
ARRAY_SIZE(file_tests), ARRAY_SIZE(info_raw_tests));
}
static int parse_args(int argc, char **argv)
{
const char *optstr = "lpk:f:r:g:";
int opt;
while ((opt = getopt(argc, argv, optstr)) != -1) {
switch (opt) {
case 'l':
args.always_log = true;
break;
case 'f':
args.file_test_num = atoi(optarg);
args.file_test = true;
break;
case 'r':
args.raw_test_num = atoi(optarg);
args.raw_test = true;
break;
case 'g':
args.get_info_test_num = atoi(optarg);
args.get_info_test = true;
break;
case 'p':
args.pprint_test = true;
break;
case 'k':
args.info_raw_test_num = atoi(optarg);
args.info_raw_test = true;
break;
case 'h':
usage(argv[0]);
exit(0);
default:
usage(argv[0]);
return -1;
}
}
if (args.raw_test_num &&
(args.raw_test_num < 1 ||
args.raw_test_num > ARRAY_SIZE(raw_tests))) {
fprintf(stderr, "BTF raw test number must be [1 - %zu]\n",
ARRAY_SIZE(raw_tests));
return -1;
}
if (args.file_test_num &&
(args.file_test_num < 1 ||
args.file_test_num > ARRAY_SIZE(file_tests))) {
fprintf(stderr, "BTF file test number must be [1 - %zu]\n",
ARRAY_SIZE(file_tests));
return -1;
}
if (args.get_info_test_num &&
(args.get_info_test_num < 1 ||
args.get_info_test_num > ARRAY_SIZE(get_info_tests))) {
fprintf(stderr, "BTF get info test number must be [1 - %zu]\n",
ARRAY_SIZE(get_info_tests));
return -1;
}
if (args.info_raw_test_num &&
(args.info_raw_test_num < 1 ||
args.info_raw_test_num > ARRAY_SIZE(info_raw_tests))) {
fprintf(stderr, "BTF prog info raw test number must be [1 - %zu]\n",
ARRAY_SIZE(info_raw_tests));
return -1;
}
return 0;
}
static void print_summary(void)
{
fprintf(stderr, "PASS:%u SKIP:%u FAIL:%u\n",
pass_cnt - skip_cnt, skip_cnt, error_cnt);
}
int main(int argc, char **argv)
{
int err = 0;
err = parse_args(argc, argv);
if (err)
return err;
if (args.always_log)
libbpf_set_print(__base_pr, __base_pr, __base_pr);
if (args.raw_test)
err |= test_raw();
if (args.get_info_test)
err |= test_get_info();
if (args.file_test)
err |= test_file();
if (args.pprint_test)
err |= test_pprint();
if (args.info_raw_test)
err |= test_info_raw();
if (args.raw_test || args.get_info_test || args.file_test ||
args.pprint_test || args.info_raw_test)
goto done;
err |= test_raw();
err |= test_get_info();
err |= test_file();
err |= test_info_raw();
done:
print_summary();
return err;
}
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