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// SPDX-License-Identifier: GPL-2.0
#include <test_progs.h>
#include "progs/core_reloc_types.h"
#define STRUCT_TO_CHAR_PTR(struct_name) (const char *)&(struct struct_name)
#define FLAVORS_DATA(struct_name) STRUCT_TO_CHAR_PTR(struct_name) { \
.a = 42, \
.b = 0xc001, \
.c = 0xbeef, \
}
#define FLAVORS_CASE_COMMON(name) \
.case_name = #name, \
.bpf_obj_file = "test_core_reloc_flavors.o", \
.btf_src_file = "btf__core_reloc_" #name ".o" \
#define FLAVORS_CASE(name) { \
FLAVORS_CASE_COMMON(name), \
.input = FLAVORS_DATA(core_reloc_##name), \
.input_len = sizeof(struct core_reloc_##name), \
.output = FLAVORS_DATA(core_reloc_flavors), \
.output_len = sizeof(struct core_reloc_flavors), \
}
#define FLAVORS_ERR_CASE(name) { \
FLAVORS_CASE_COMMON(name), \
.fails = true, \
}
#define NESTING_DATA(struct_name) STRUCT_TO_CHAR_PTR(struct_name) { \
.a = { .a = { .a = 42 } }, \
.b = { .b = { .b = 0xc001 } }, \
}
#define NESTING_CASE_COMMON(name) \
.case_name = #name, \
.bpf_obj_file = "test_core_reloc_nesting.o", \
.btf_src_file = "btf__core_reloc_" #name ".o"
#define NESTING_CASE(name) { \
NESTING_CASE_COMMON(name), \
.input = NESTING_DATA(core_reloc_##name), \
.input_len = sizeof(struct core_reloc_##name), \
.output = NESTING_DATA(core_reloc_nesting), \
.output_len = sizeof(struct core_reloc_nesting) \
}
#define NESTING_ERR_CASE(name) { \
NESTING_CASE_COMMON(name), \
.fails = true, \
}
#define ARRAYS_DATA(struct_name) STRUCT_TO_CHAR_PTR(struct_name) { \
.a = { [2] = 1 }, \
.b = { [1] = { [2] = { [3] = 2 } } }, \
.c = { [1] = { .c = 3 } }, \
.d = { [0] = { [0] = { .d = 4 } } }, \
}
#define ARRAYS_CASE_COMMON(name) \
.case_name = #name, \
.bpf_obj_file = "test_core_reloc_arrays.o", \
.btf_src_file = "btf__core_reloc_" #name ".o"
#define ARRAYS_CASE(name) { \
ARRAYS_CASE_COMMON(name), \
.input = ARRAYS_DATA(core_reloc_##name), \
.input_len = sizeof(struct core_reloc_##name), \
.output = STRUCT_TO_CHAR_PTR(core_reloc_arrays_output) { \
.a2 = 1, \
.b123 = 2, \
.c1c = 3, \
.d00d = 4, \
}, \
.output_len = sizeof(struct core_reloc_arrays_output) \
}
#define ARRAYS_ERR_CASE(name) { \
ARRAYS_CASE_COMMON(name), \
.fails = true, \
}
#define PRIMITIVES_DATA(struct_name) STRUCT_TO_CHAR_PTR(struct_name) { \
.a = 1, \
.b = 2, \
.c = 3, \
.d = (void *)4, \
.f = (void *)5, \
}
#define PRIMITIVES_CASE_COMMON(name) \
.case_name = #name, \
.bpf_obj_file = "test_core_reloc_primitives.o", \
.btf_src_file = "btf__core_reloc_" #name ".o"
#define PRIMITIVES_CASE(name) { \
PRIMITIVES_CASE_COMMON(name), \
.input = PRIMITIVES_DATA(core_reloc_##name), \
.input_len = sizeof(struct core_reloc_##name), \
.output = PRIMITIVES_DATA(core_reloc_primitives), \
.output_len = sizeof(struct core_reloc_primitives), \
}
#define PRIMITIVES_ERR_CASE(name) { \
PRIMITIVES_CASE_COMMON(name), \
.fails = true, \
}
#define MODS_CASE(name) { \
.case_name = #name, \
.bpf_obj_file = "test_core_reloc_mods.o", \
.btf_src_file = "btf__core_reloc_" #name ".o", \
.input = STRUCT_TO_CHAR_PTR(core_reloc_##name) { \
.a = 1, \
.b = 2, \
.c = (void *)3, \
.d = (void *)4, \
.e = { [2] = 5 }, \
.f = { [1] = 6 }, \
.g = { .x = 7 }, \
.h = { .y = 8 }, \
}, \
.input_len = sizeof(struct core_reloc_##name), \
.output = STRUCT_TO_CHAR_PTR(core_reloc_mods_output) { \
.a = 1, .b = 2, .c = 3, .d = 4, \
.e = 5, .f = 6, .g = 7, .h = 8, \
}, \
.output_len = sizeof(struct core_reloc_mods_output), \
}
#define PTR_AS_ARR_CASE(name) { \
.case_name = #name, \
.bpf_obj_file = "test_core_reloc_ptr_as_arr.o", \
.btf_src_file = "btf__core_reloc_" #name ".o", \
.input = (const char *)&(struct core_reloc_##name []){ \
{ .a = 1 }, \
{ .a = 2 }, \
{ .a = 3 }, \
}, \
.input_len = 3 * sizeof(struct core_reloc_##name), \
.output = STRUCT_TO_CHAR_PTR(core_reloc_ptr_as_arr) { \
.a = 3, \
}, \
.output_len = sizeof(struct core_reloc_ptr_as_arr), \
}
#define INTS_DATA(struct_name) STRUCT_TO_CHAR_PTR(struct_name) { \
.u8_field = 1, \
.s8_field = 2, \
.u16_field = 3, \
.s16_field = 4, \
.u32_field = 5, \
.s32_field = 6, \
.u64_field = 7, \
.s64_field = 8, \
}
#define INTS_CASE_COMMON(name) \
.case_name = #name, \
.bpf_obj_file = "test_core_reloc_ints.o", \
.btf_src_file = "btf__core_reloc_" #name ".o"
#define INTS_CASE(name) { \
INTS_CASE_COMMON(name), \
.input = INTS_DATA(core_reloc_##name), \
.input_len = sizeof(struct core_reloc_##name), \
.output = INTS_DATA(core_reloc_ints), \
.output_len = sizeof(struct core_reloc_ints), \
}
#define INTS_ERR_CASE(name) { \
INTS_CASE_COMMON(name), \
.fails = true, \
}
#define EXISTENCE_CASE_COMMON(name) \
.case_name = #name, \
.bpf_obj_file = "test_core_reloc_existence.o", \
.btf_src_file = "btf__core_reloc_" #name ".o", \
.relaxed_core_relocs = true
#define EXISTENCE_ERR_CASE(name) { \
EXISTENCE_CASE_COMMON(name), \
.fails = true, \
}
#define BITFIELDS_CASE_COMMON(objfile, test_name_prefix, name) \
.case_name = test_name_prefix#name, \
.bpf_obj_file = objfile, \
.btf_src_file = "btf__core_reloc_" #name ".o"
#define BITFIELDS_CASE(name, ...) { \
BITFIELDS_CASE_COMMON("test_core_reloc_bitfields_probed.o", \
"direct:", name), \
.input = STRUCT_TO_CHAR_PTR(core_reloc_##name) __VA_ARGS__, \
.input_len = sizeof(struct core_reloc_##name), \
.output = STRUCT_TO_CHAR_PTR(core_reloc_bitfields_output) \
__VA_ARGS__, \
.output_len = sizeof(struct core_reloc_bitfields_output), \
}, { \
BITFIELDS_CASE_COMMON("test_core_reloc_bitfields_direct.o", \
"probed:", name), \
.input = STRUCT_TO_CHAR_PTR(core_reloc_##name) __VA_ARGS__, \
.input_len = sizeof(struct core_reloc_##name), \
.output = STRUCT_TO_CHAR_PTR(core_reloc_bitfields_output) \
__VA_ARGS__, \
.output_len = sizeof(struct core_reloc_bitfields_output), \
.direct_raw_tp = true, \
}
#define BITFIELDS_ERR_CASE(name) { \
BITFIELDS_CASE_COMMON("test_core_reloc_bitfields_probed.o", \
"probed:", name), \
.fails = true, \
}, { \
BITFIELDS_CASE_COMMON("test_core_reloc_bitfields_direct.o", \
"direct:", name), \
.direct_raw_tp = true, \
.fails = true, \
}
#define SIZE_CASE_COMMON(name) \
.case_name = #name, \
.bpf_obj_file = "test_core_reloc_size.o", \
.btf_src_file = "btf__core_reloc_" #name ".o", \
.relaxed_core_relocs = true
#define SIZE_OUTPUT_DATA(type) \
STRUCT_TO_CHAR_PTR(core_reloc_size_output) { \
.int_sz = sizeof(((type *)0)->int_field), \
.struct_sz = sizeof(((type *)0)->struct_field), \
.union_sz = sizeof(((type *)0)->union_field), \
.arr_sz = sizeof(((type *)0)->arr_field), \
.arr_elem_sz = sizeof(((type *)0)->arr_field[0]), \
.ptr_sz = sizeof(((type *)0)->ptr_field), \
.enum_sz = sizeof(((type *)0)->enum_field), \
}
#define SIZE_CASE(name) { \
SIZE_CASE_COMMON(name), \
.input_len = 0, \
.output = SIZE_OUTPUT_DATA(struct core_reloc_##name), \
.output_len = sizeof(struct core_reloc_size_output), \
}
#define SIZE_ERR_CASE(name) { \
SIZE_CASE_COMMON(name), \
.fails = true, \
}
struct core_reloc_test_case {
const char *case_name;
const char *bpf_obj_file;
const char *btf_src_file;
const char *input;
int input_len;
const char *output;
int output_len;
bool fails;
bool relaxed_core_relocs;
bool direct_raw_tp;
};
static struct core_reloc_test_case test_cases[] = {
/* validate we can find kernel image and use its BTF for relocs */
{
.case_name = "kernel",
.bpf_obj_file = "test_core_reloc_kernel.o",
.btf_src_file = NULL, /* load from /lib/modules/$(uname -r) */
.input = "",
.input_len = 0,
.output = STRUCT_TO_CHAR_PTR(core_reloc_kernel_output) {
.valid = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, },
.comm = "test_progs",
.comm_len = sizeof("test_progs"),
},
.output_len = sizeof(struct core_reloc_kernel_output),
},
/* validate BPF program can use multiple flavors to match against
* single target BTF type
*/
FLAVORS_CASE(flavors),
FLAVORS_ERR_CASE(flavors__err_wrong_name),
/* various struct/enum nesting and resolution scenarios */
NESTING_CASE(nesting),
NESTING_CASE(nesting___anon_embed),
NESTING_CASE(nesting___struct_union_mixup),
NESTING_CASE(nesting___extra_nesting),
NESTING_CASE(nesting___dup_compat_types),
NESTING_ERR_CASE(nesting___err_missing_field),
NESTING_ERR_CASE(nesting___err_array_field),
NESTING_ERR_CASE(nesting___err_missing_container),
NESTING_ERR_CASE(nesting___err_nonstruct_container),
NESTING_ERR_CASE(nesting___err_array_container),
NESTING_ERR_CASE(nesting___err_dup_incompat_types),
NESTING_ERR_CASE(nesting___err_partial_match_dups),
NESTING_ERR_CASE(nesting___err_too_deep),
/* various array access relocation scenarios */
ARRAYS_CASE(arrays),
ARRAYS_CASE(arrays___diff_arr_dim),
ARRAYS_CASE(arrays___diff_arr_val_sz),
ARRAYS_ERR_CASE(arrays___err_too_small),
ARRAYS_ERR_CASE(arrays___err_too_shallow),
ARRAYS_ERR_CASE(arrays___err_non_array),
ARRAYS_ERR_CASE(arrays___err_wrong_val_type1),
ARRAYS_ERR_CASE(arrays___err_wrong_val_type2),
/* enum/ptr/int handling scenarios */
PRIMITIVES_CASE(primitives),
PRIMITIVES_CASE(primitives___diff_enum_def),
PRIMITIVES_CASE(primitives___diff_func_proto),
PRIMITIVES_CASE(primitives___diff_ptr_type),
PRIMITIVES_ERR_CASE(primitives___err_non_enum),
PRIMITIVES_ERR_CASE(primitives___err_non_int),
PRIMITIVES_ERR_CASE(primitives___err_non_ptr),
/* const/volatile/restrict and typedefs scenarios */
MODS_CASE(mods),
MODS_CASE(mods___mod_swap),
MODS_CASE(mods___typedefs),
/* handling "ptr is an array" semantics */
PTR_AS_ARR_CASE(ptr_as_arr),
PTR_AS_ARR_CASE(ptr_as_arr___diff_sz),
/* int signedness/sizing/bitfield handling */
INTS_CASE(ints),
INTS_CASE(ints___bool),
INTS_CASE(ints___reverse_sign),
/* validate edge cases of capturing relocations */
{
.case_name = "misc",
.bpf_obj_file = "test_core_reloc_misc.o",
.btf_src_file = "btf__core_reloc_misc.o",
.input = (const char *)&(struct core_reloc_misc_extensible[]){
{ .a = 1 },
{ .a = 2 }, /* not read */
{ .a = 3 },
},
.input_len = 4 * sizeof(int),
.output = STRUCT_TO_CHAR_PTR(core_reloc_misc_output) {
.a = 1,
.b = 1,
.c = 0, /* BUG in clang, should be 3 */
},
.output_len = sizeof(struct core_reloc_misc_output),
},
/* validate field existence checks */
{
EXISTENCE_CASE_COMMON(existence),
.input = STRUCT_TO_CHAR_PTR(core_reloc_existence) {
.a = 1,
.b = 2,
.c = 3,
.arr = { 4 },
.s = { .x = 5 },
},
.input_len = sizeof(struct core_reloc_existence),
.output = STRUCT_TO_CHAR_PTR(core_reloc_existence_output) {
.a_exists = 1,
.b_exists = 1,
.c_exists = 1,
.arr_exists = 1,
.s_exists = 1,
.a_value = 1,
.b_value = 2,
.c_value = 3,
.arr_value = 4,
.s_value = 5,
},
.output_len = sizeof(struct core_reloc_existence_output),
},
{
EXISTENCE_CASE_COMMON(existence___minimal),
.input = STRUCT_TO_CHAR_PTR(core_reloc_existence___minimal) {
.a = 42,
},
.input_len = sizeof(struct core_reloc_existence),
.output = STRUCT_TO_CHAR_PTR(core_reloc_existence_output) {
.a_exists = 1,
.b_exists = 0,
.c_exists = 0,
.arr_exists = 0,
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