// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2025 Meta Platforms, Inc. and affiliates. */
#include <test_progs.h>
#include <string.h>
#include <stdio.h>
#define __CHECK_STR(str, name) \
do { \
if (!ASSERT_HAS_SUBSTR(fix->output, (str), (name))) \
goto out; \
} while (0)
struct fixture {
char tmpfile[80];
int fd;
char *output;
size_t sz;
char veristat[80];
};
static struct fixture *init_fixture(void )
{
struct fixture *fix = malloc(sizeof (struct fixture));
/* for no_alu32 and cpuv4 veristat is in parent folder */
if (access("./veristat" , F_OK) == 0)
strcpy(fix->veristat, "./veristat" );
else if (access("../veristat" , F_OK) == 0)
strcpy(fix->veristat, "../veristat" );
else
PRINT_FAIL("Can't find veristat binary" );
snprintf(fix->tmpfile, sizeof (fix->tmpfile), "/tmp/test_veristat.XXXXXX" );
fix->fd = mkstemp(fix->tmpfile);
fix->sz = 1000000;
fix->output = malloc(fix->sz);
return fix;
}
static void teardown_fixture(struct fixture *fix)
{
free(fix->output);
close(fix->fd);
remove(fix->tmpfile);
free(fix);
}
static void test_set_global_vars_succeeds(void )
{
struct fixture *fix = init_fixture();
SYS(out,
"%s set_global_vars.bpf.o" \
" -G \" var_s64 = 0xf000000000000001\" " \
" -G \" var_u64 = 0xfedcba9876543210\" " \
" -G \" var_s32 = -0x80000000\" " \
" -G \" var_u32 = 0x76543210\" " \
" -G \" var_s16 = -32768\" " \
" -G \" var_u16 = 60652\" " \
" -G \" var_s8 = -128\" " \
" -G \" var_u8 = 255\" " \
" -G \" var_ea = EA2\" " \
" -G \" var_eb = EB2\" " \
" -G \" var_ec=EC2\" " \
" -G \" var_b = 1\" " \
" -G \" struct1[2].struct2[1][2].u.var_u8[2]=170\" " \
" -G \" union1.struct3.var_u8_l = 0xaa\" " \
" -G \" union1.struct3.var_u8_h = 0xaa\" " \
" -G \" arr[3]= 171\" " \
" -G \" arr[EA2] =172\" " \
" -G \" enum_arr[EC2]=EA3\" " \
" -G \" three_d[31][7][EA2]=173\"" \
" -G \" struct1[2].struct2[1][2].u.mat[5][3]=174\" " \
" -G \" struct11 [ 7 ] [ 5 ] .struct2[0][1].u.mat[3][0] = 175\" " \
" -vl2 > %s" , fix->veristat, fix->tmpfile);
read(fix->fd, fix->output, fix->sz);
__CHECK_STR("_w=0xf000000000000001 " , "var_s64 = 0xf000000000000001" );
__CHECK_STR("_w=0xfedcba9876543210 " , "var_u64 = 0xfedcba9876543210" );
__CHECK_STR("_w=0x80000000 " , "var_s32 = -0x80000000" );
__CHECK_STR("_w=0x76543210 " , "var_u32 = 0x76543210" );
__CHECK_STR("_w=0x8000 " , "var_s16 = -32768" );
__CHECK_STR("_w=0xecec " , "var_u16 = 60652" );
__CHECK_STR("_w=128 " , "var_s8 = -128" );
__CHECK_STR("_w=255 " , "var_u8 = 255" );
__CHECK_STR("_w=11 " , "var_ea = EA2" );
__CHECK_STR("_w=12 " , "var_eb = EB2" );
__CHECK_STR("_w=13 " , "var_ec = EC2" );
__CHECK_STR("_w=1 " , "var_b = 1" );
__CHECK_STR("_w=170 " , "struct1[2].struct2[1][2].u.var_u8[2]=170" );
__CHECK_STR("_w=0xaaaa " , "union1.var_u16 = 0xaaaa" );
__CHECK_STR("_w=171 " , "arr[3]= 171" );
__CHECK_STR("_w=172 " , "arr[EA2] =172" );
__CHECK_STR("_w=10 " , "enum_arr[EC2]=EA3" );
__CHECK_STR("_w=173 " , "matrix[31][7][11]=173" );
__CHECK_STR("_w=174 " , "struct1[2].struct2[1][2].u.mat[5][3]=174" );
__CHECK_STR("_w=175 " , "struct11[7][5].struct2[0][1].u.mat[3][0]=175" );
out:
teardown_fixture(fix);
}
static void test_set_global_vars_from_file_succeeds(void )
{
struct fixture *fix = init_fixture();
char input_file[80];
const char *vars = "var_s16 = -32768\nvar_u16 = 60652" ;
int fd;
snprintf(input_file, sizeof (input_file), "/tmp/veristat_input.XXXXXX" );
fd = mkstemp(input_file);
if (!ASSERT_GE(fd, 0, "valid fd" ))
goto out;
write(fd, vars, strlen(vars));
syncfs(fd);
SYS(out, "%s set_global_vars.bpf.o -G \" @%s\" -vl2 > %s" ,
fix->veristat, input_file, fix->tmpfile);
read(fix->fd, fix->output, fix->sz);
__CHECK_STR("_w=0x8000 " , "var_s16 = -32768" );
__CHECK_STR("_w=0xecec " , "var_u16 = 60652" );
out:
close(fd);
remove(input_file);
teardown_fixture(fix);
}
static void test_set_global_vars_out_of_range(void )
{
struct fixture *fix = init_fixture();
SYS_FAIL(out,
"%s set_global_vars.bpf.o -G \" var_s32 = 2147483648\" -vl2 2> %s" ,
fix->veristat, fix->tmpfile);
read(fix->fd, fix->output, fix->sz);
__CHECK_STR("is out of range [-2147483648; 2147483647]" , "out of range" );
out:
teardown_fixture(fix);
}
static void test_unsupported_ptr_array_type(void )
{
struct fixture *fix = init_fixture();
SYS_FAIL(out,
"%s set_global_vars.bpf.o -G \" ptr_arr[0] = 0\" -vl2 2> %s" ,
fix->veristat, fix->tmpfile);
read(fix->fd, fix->output, fix->sz);
__CHECK_STR("Can't set ptr_arr[0]. Only ints and enums are supported" , "ptr_arr" );
out:
teardown_fixture(fix);
}
static void test_array_out_of_bounds(void )
{
struct fixture *fix = init_fixture();
SYS_FAIL(out,
"%s set_global_vars.bpf.o -G \" arr[99] = 0\" -vl2 2> %s" ,
fix->veristat, fix->tmpfile);
read(fix->fd, fix->output, fix->sz);
__CHECK_STR("Array index 99 is out of bounds" , "arr[99]" );
out:
teardown_fixture(fix);
}
static void test_array_index_not_found(void )
{
struct fixture *fix = init_fixture();
SYS_FAIL(out,
"%s set_global_vars.bpf.o -G \" arr[EG2] = 0\" -vl2 2> %s" ,
fix->veristat, fix->tmpfile);
read(fix->fd, fix->output, fix->sz);
__CHECK_STR("Can't resolve enum value EG2" , "arr[EG2]" );
out:
teardown_fixture(fix);
}
static void test_array_index_for_non_array(void )
{
struct fixture *fix = init_fixture();
SYS_FAIL(out,
"%s set_global_vars.bpf.o -G \" var_b[0] = 1\" -vl2 2> %s" ,
fix->veristat, fix->tmpfile);
pread(fix->fd, fix->output, fix->sz, 0);
__CHECK_STR("Array index is not expected for var_b" , "var_b[0] = 1" );
SYS_FAIL(out,
"%s set_global_vars.bpf.o -G \" union1.struct3[0].var_u8_l=1\" -vl2 2> %s" ,
fix->veristat, fix->tmpfile);
pread(fix->fd, fix->output, fix->sz, 0);
__CHECK_STR("Array index is not expected for struct3" , "union1.struct3[0].var_u8_l=1" );
out:
teardown_fixture(fix);
}
static void test_no_array_index_for_array(void )
{
struct fixture *fix = init_fixture();
SYS_FAIL(out,
"%s set_global_vars.bpf.o -G \" arr = 1\" -vl2 2> %s" ,
fix->veristat, fix->tmpfile);
pread(fix->fd, fix->output, fix->sz, 0);
__CHECK_STR("Can't set arr. Only ints and enums are supported" , "arr = 1" );
SYS_FAIL(out,
"%s set_global_vars.bpf.o -G \" struct1[0].struct2.u.var_u8[2]=1\" -vl2 2> %s" ,
fix->veristat, fix->tmpfile);
pread(fix->fd, fix->output, fix->sz, 0);
__CHECK_STR("Can't resolve field u for non-composite type" , "struct1[0].struct2.u.var_u8[2]=1" );
out:
teardown_fixture(fix);
}
void test_veristat(void )
{
if (test__start_subtest("set_global_vars_succeeds" ))
test_set_global_vars_succeeds();
if (test__start_subtest("set_global_vars_out_of_range" ))
test_set_global_vars_out_of_range();
if (test__start_subtest("set_global_vars_from_file_succeeds" ))
test_set_global_vars_from_file_succeeds();
if (test__start_subtest("test_unsupported_ptr_array_type" ))
test_unsupported_ptr_array_type();
if (test__start_subtest("test_array_out_of_bounds" ))
test_array_out_of_bounds();
if (test__start_subtest("test_array_index_not_found" ))
test_array_index_not_found();
if (test__start_subtest("test_array_index_for_non_array" ))
test_array_index_for_non_array();
if (test__start_subtest("test_no_array_index_for_array" ))
test_no_array_index_for_array();
}
#undef __CHECK_STR
Messung V0.5 C=94 H=97 G=95
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