1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (c) 2019 Facebook */ 3 #include <test_progs.h> 4 #include "fentry_test.lskel.h" 5 #include "fentry_many_args.skel.h" 6 7 static int fentry_test_common(struct fentry_test_lskel *fentry_skel) 8 { 9 int err, prog_fd, i; 10 int link_fd; 11 __u64 *result; 12 LIBBPF_OPTS(bpf_test_run_opts, topts); 13 14 err = fentry_test_lskel__attach(fentry_skel); 15 if (!ASSERT_OK(err, "fentry_attach")) 16 return err; 17 18 /* Check that already linked program can't be attached again. */ 19 link_fd = fentry_test_lskel__test1__attach(fentry_skel); 20 if (!ASSERT_LT(link_fd, 0, "fentry_attach_link")) 21 return -1; 22 23 prog_fd = fentry_skel->progs.test1.prog_fd; 24 err = bpf_prog_test_run_opts(prog_fd, &topts); 25 ASSERT_OK(err, "test_run"); 26 ASSERT_EQ(topts.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 static void fentry_test(void) 42 { 43 struct fentry_test_lskel *fentry_skel = NULL; 44 int err; 45 46 fentry_skel = fentry_test_lskel__open(); 47 if (!ASSERT_OK_PTR(fentry_skel, "fentry_skel_open")) 48 goto cleanup; 49 50 fentry_skel->keyring_id = KEY_SPEC_SESSION_KEYRING; 51 err = fentry_test_lskel__load(fentry_skel); 52 if (!ASSERT_OK(err, "fentry_skel_load")) 53 goto cleanup; 54 55 err = fentry_test_common(fentry_skel); 56 if (!ASSERT_OK(err, "fentry_first_attach")) 57 goto cleanup; 58 59 err = fentry_test_common(fentry_skel); 60 ASSERT_OK(err, "fentry_second_attach"); 61 62 cleanup: 63 fentry_test_lskel__destroy(fentry_skel); 64 } 65 66 static void fentry_many_args(void) 67 { 68 struct fentry_many_args *fentry_skel = NULL; 69 int err; 70 71 fentry_skel = fentry_many_args__open_and_load(); 72 if (!ASSERT_OK_PTR(fentry_skel, "fentry_many_args_skel_load")) 73 goto cleanup; 74 75 err = fentry_many_args__attach(fentry_skel); 76 if (!ASSERT_OK(err, "fentry_many_args_attach")) 77 goto cleanup; 78 79 ASSERT_OK(trigger_module_test_read(1), "trigger_read"); 80 81 ASSERT_EQ(fentry_skel->bss->test1_result, 1, 82 "fentry_many_args_result1"); 83 ASSERT_EQ(fentry_skel->bss->test2_result, 1, 84 "fentry_many_args_result2"); 85 ASSERT_EQ(fentry_skel->bss->test3_result, 1, 86 "fentry_many_args_result3"); 87 88 cleanup: 89 fentry_many_args__destroy(fentry_skel); 90 } 91 92 void test_fentry_test(void) 93 { 94 if (test__start_subtest("fentry")) 95 fentry_test(); 96 if (test__start_subtest("fentry_many_args")) 97 fentry_many_args(); 98 } 99