1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (c) 2021 Facebook */ 3 4 #include <test_progs.h> 5 #include <sys/syscall.h> 6 #include "linked_vars.skel.h" 7 8 void test_linked_vars(void) 9 { 10 int err; 11 struct linked_vars *skel; 12 13 skel = linked_vars__open(); 14 if (!ASSERT_OK_PTR(skel, "skel_open")) 15 return; 16 17 skel->bss->input_bss1 = 1000; 18 skel->bss->input_bss2 = 2000; 19 skel->bss->input_bss_weak = 3000; 20 21 err = linked_vars__load(skel); 22 if (!ASSERT_OK(err, "skel_load")) 23 goto cleanup; 24 25 err = linked_vars__attach(skel); 26 if (!ASSERT_OK(err, "skel_attach")) 27 goto cleanup; 28 29 /* trigger */ 30 syscall(SYS_getpgid); 31 32 ASSERT_EQ(skel->bss->output_bss1, 1000 + 2000 + 3000, "output_bss1"); 33 ASSERT_EQ(skel->bss->output_bss2, 1000 + 2000 + 3000, "output_bss2"); 34 /* 10 comes from "winner" input_data_weak in first obj file */ 35 ASSERT_EQ(skel->bss->output_data1, 1 + 2 + 10, "output_bss1"); 36 ASSERT_EQ(skel->bss->output_data2, 1 + 2 + 10, "output_bss2"); 37 /* 100 comes from "winner" input_rodata_weak in first obj file */ 38 ASSERT_EQ(skel->bss->output_rodata1, 11 + 22 + 100, "output_weak1"); 39 ASSERT_EQ(skel->bss->output_rodata2, 11 + 22 + 100, "output_weak2"); 40 41 cleanup: 42 linked_vars__destroy(skel); 43 } 44