// SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2021 Facebook */ #include <test_progs.h> #include <sys/syscall.h> #include "linked_funcs.skel.h" void test_linked_funcs(void) { int err; struct linked_funcs *skel; skel = linked_funcs__open(); if (!ASSERT_OK_PTR(skel, "skel_open")) return; /* handler1 and handler2 are marked as SEC("?raw_tp/sys_enter") and * are set to not autoload by default */ bpf_program__set_autoload(skel->progs.handler1, true); bpf_program__set_autoload(skel->progs.handler2, true); skel->rodata->my_tid = syscall(SYS_gettid); skel->bss->syscall_id = SYS_getpgid; err = linked_funcs__load(skel); if (!ASSERT_OK(err, "skel_load")) goto cleanup; err = linked_funcs__attach(skel); if (!ASSERT_OK(err, "skel_attach")) goto cleanup; /* trigger */ syscall(SYS_getpgid); ASSERT_EQ(skel->bss->output_val1, 2000 + 2000, "output_val1"); ASSERT_EQ(skel->bss->output_ctx1, SYS_getpgid, "output_ctx1"); ASSERT_EQ(skel->bss->output_weak1, 42, "output_weak1"); ASSERT_EQ(skel->bss->output_val2, 2 * 1000 + 2 * (2 * 1000), "output_val2"); ASSERT_EQ(skel->bss->output_ctx2, SYS_getpgid, "output_ctx2"); /* output_weak2 should never be updated */ ASSERT_EQ(skel->bss->output_weak2, 0, "output_weak2"); cleanup: linked_funcs__destroy(skel); }