diff options
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/linked_vars.c')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/linked_vars.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/linked_vars.c b/tools/testing/selftests/bpf/prog_tests/linked_vars.c new file mode 100644 index 000000000000..267166abe4c1 --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/linked_vars.c @@ -0,0 +1,43 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2021 Facebook */ + +#include <test_progs.h> +#include <sys/syscall.h> +#include "linked_vars.skel.h" + +void test_linked_vars(void) +{ + int err; + struct linked_vars *skel; + + skel = linked_vars__open(); + if (!ASSERT_OK_PTR(skel, "skel_open")) + return; + + skel->bss->input_bss1 = 1000; + skel->bss->input_bss2 = 2000; + skel->bss->input_bss_weak = 3000; + + err = linked_vars__load(skel); + if (!ASSERT_OK(err, "skel_load")) + goto cleanup; + + err = linked_vars__attach(skel); + if (!ASSERT_OK(err, "skel_attach")) + goto cleanup; + + /* trigger */ + syscall(SYS_getpgid); + + ASSERT_EQ(skel->bss->output_bss1, 1000 + 2000 + 3000, "output_bss1"); + ASSERT_EQ(skel->bss->output_bss2, 1000 + 2000 + 3000, "output_bss2"); + /* 10 comes from "winner" input_data_weak in first obj file */ + ASSERT_EQ(skel->bss->output_data1, 1 + 2 + 10, "output_bss1"); + ASSERT_EQ(skel->bss->output_data2, 1 + 2 + 10, "output_bss2"); + /* 100 comes from "winner" input_rodata_weak in first obj file */ + ASSERT_EQ(skel->bss->output_rodata1, 11 + 22 + 100, "output_weak1"); + ASSERT_EQ(skel->bss->output_rodata2, 11 + 22 + 100, "output_weak2"); + +cleanup: + linked_vars__destroy(skel); +} |