1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (c) 2019 Facebook */ 3 #include <test_progs.h> 4 #include "fentry_test.lskel.h" 5 6 static int fentry_test(struct fentry_test_lskel *fentry_skel) 7 { 8 int err, prog_fd, i; 9 __u32 duration = 0, retval; 10 int link_fd; 11 __u64 *result; 12 13 err = fentry_test_lskel__attach(fentry_skel); 14 if (!ASSERT_OK(err, "fentry_attach")) 15 return err; 16 17 /* Check that already linked program can't be attached again. */ 18 link_fd = fentry_test_lskel__test1__attach(fentry_skel); 19 if (!ASSERT_LT(link_fd, 0, "fentry_attach_link")) 20 return -1; 21 22 prog_fd = fentry_skel->progs.test1.prog_fd; 23 err = bpf_prog_test_run(prog_fd, 1, NULL, 0, 24 NULL, NULL, &retval, &duration); 25 ASSERT_OK(err, "test_run"); 26 ASSERT_EQ(retval, 0, "test_run"); 27 28 result = (__u64 *)fentry_skel->bss; 29 for (i = 0; i < sizeof(*fentry_skel->bss) / sizeof(__u64); i++) { 30 if (!ASSERT_EQ(result[i], 1, "fentry_result")) 31 return -1; 32 } 33 34 fentry_test_lskel__detach(fentry_skel); 35 36 /* zero results for re-attach test */ 37 memset(fentry_skel->bss, 0, sizeof(*fentry_skel->bss)); 38 return 0; 39 } 40 41 void test_fentry_test(void) 42 { 43 struct fentry_test_lskel *fentry_skel = NULL; 44 int err; 45 46 fentry_skel = fentry_test_lskel__open_and_load(); 47 if (!ASSERT_OK_PTR(fentry_skel, "fentry_skel_load")) 48 goto cleanup; 49 50 err = fentry_test(fentry_skel); 51 if (!ASSERT_OK(err, "fentry_first_attach")) 52 goto cleanup; 53 54 err = fentry_test(fentry_skel); 55 ASSERT_OK(err, "fentry_second_attach"); 56 57 cleanup: 58 fentry_test_lskel__destroy(fentry_skel); 59 } 60