Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 | // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2019 Facebook */ #include <test_progs.h> #include <sys/mman.h> #include <sys/utsname.h> #include <linux/version.h> #include "test_core_extern.skel.h" static uint32_t get_kernel_version(void) { uint32_t major, minor, patch; struct utsname info; uname(&info); if (sscanf(info.release, "%u.%u.%u", &major, &minor, &patch) != 3) return 0; return KERNEL_VERSION(major, minor, patch); } #define CFG "CONFIG_BPF_SYSCALL=n\n" static struct test_case { const char *name; const char *cfg; bool fails; struct test_core_extern__data data; } test_cases[] = { { .name = "default search path", .data = { .bpf_syscall = true } }, { .name = "custom values", .cfg = "CONFIG_BPF_SYSCALL=n\n" "CONFIG_TRISTATE=m\n" "CONFIG_BOOL=y\n" "CONFIG_CHAR=100\n" "CONFIG_USHORT=30000\n" "CONFIG_INT=123456\n" "CONFIG_ULONG=0xDEADBEEFC0DE\n" "CONFIG_STR=\"abracad\"\n" "CONFIG_MISSING=0", .data = { .unkn_virt_val = 0, .bpf_syscall = false, .tristate_val = TRI_MODULE, .bool_val = true, .char_val = 100, .ushort_val = 30000, .int_val = 123456, .ulong_val = 0xDEADBEEFC0DE, .str_val = "abracad", }, }, /* TRISTATE */ { .name = "tristate (y)", .cfg = CFG"CONFIG_TRISTATE=y\n", .data = { .tristate_val = TRI_YES } }, { .name = "tristate (n)", .cfg = CFG"CONFIG_TRISTATE=n\n", .data = { .tristate_val = TRI_NO } }, { .name = "tristate (m)", .cfg = CFG"CONFIG_TRISTATE=m\n", .data = { .tristate_val = TRI_MODULE } }, { .name = "tristate (int)", .fails = 1, .cfg = CFG"CONFIG_TRISTATE=1" }, { .name = "tristate (bad)", .fails = 1, .cfg = CFG"CONFIG_TRISTATE=M" }, /* BOOL */ { .name = "bool (y)", .cfg = CFG"CONFIG_BOOL=y\n", .data = { .bool_val = true } }, { .name = "bool (n)", .cfg = CFG"CONFIG_BOOL=n\n", .data = { .bool_val = false } }, { .name = "bool (tristate)", .fails = 1, .cfg = CFG"CONFIG_BOOL=m" }, { .name = "bool (int)", .fails = 1, .cfg = CFG"CONFIG_BOOL=1" }, /* CHAR */ { .name = "char (tristate)", .cfg = CFG"CONFIG_CHAR=m\n", .data = { .char_val = 'm' } }, { .name = "char (bad)", .fails = 1, .cfg = CFG"CONFIG_CHAR=q\n" }, { .name = "char (empty)", .fails = 1, .cfg = CFG"CONFIG_CHAR=\n" }, { .name = "char (str)", .fails = 1, .cfg = CFG"CONFIG_CHAR=\"y\"\n" }, /* STRING */ { .name = "str (empty)", .cfg = CFG"CONFIG_STR=\"\"\n", .data = { .str_val = "\0\0\0\0\0\0\0" } }, { .name = "str (padded)", .cfg = CFG"CONFIG_STR=\"abra\"\n", .data = { .str_val = "abra\0\0\0" } }, { .name = "str (too long)", .cfg = CFG"CONFIG_STR=\"abracada\"\n", .data = { .str_val = "abracad" } }, { .name = "str (no value)", .fails = 1, .cfg = CFG"CONFIG_STR=\n" }, { .name = "str (bad value)", .fails = 1, .cfg = CFG"CONFIG_STR=bla\n" }, /* INTEGERS */ { .name = "integer forms", .cfg = CFG "CONFIG_CHAR=0xA\n" "CONFIG_USHORT=0462\n" "CONFIG_INT=-100\n" "CONFIG_ULONG=+1000000000000", .data = { .char_val = 0xA, .ushort_val = 0462, .int_val = -100, .ulong_val = 1000000000000, }, }, { .name = "int (bad)", .fails = 1, .cfg = CFG"CONFIG_INT=abc" }, { .name = "int (str)", .fails = 1, .cfg = CFG"CONFIG_INT=\"abc\"" }, { .name = "int (empty)", .fails = 1, .cfg = CFG"CONFIG_INT=" }, { .name = "int (mixed)", .fails = 1, .cfg = CFG"CONFIG_INT=123abc" }, { .name = "int (max)", .cfg = CFG"CONFIG_INT=2147483647", .data = { .int_val = 2147483647 } }, { .name = "int (min)", .cfg = CFG"CONFIG_INT=-2147483648", .data = { .int_val = -2147483648 } }, { .name = "int (max+1)", .fails = 1, .cfg = CFG"CONFIG_INT=2147483648" }, { .name = "int (min-1)", .fails = 1, .cfg = CFG"CONFIG_INT=-2147483649" }, { .name = "ushort (max)", .cfg = CFG"CONFIG_USHORT=65535", .data = { .ushort_val = 65535 } }, { .name = "ushort (min)", .cfg = CFG"CONFIG_USHORT=0", .data = { .ushort_val = 0 } }, { .name = "ushort (max+1)", .fails = 1, .cfg = CFG"CONFIG_USHORT=65536" }, { .name = "ushort (min-1)", .fails = 1, .cfg = CFG"CONFIG_USHORT=-1" }, { .name = "u64 (max)", .cfg = CFG"CONFIG_ULONG=0xffffffffffffffff", .data = { .ulong_val = 0xffffffffffffffff } }, { .name = "u64 (min)", .cfg = CFG"CONFIG_ULONG=0", .data = { .ulong_val = 0 } }, { .name = "u64 (max+1)", .fails = 1, .cfg = CFG"CONFIG_ULONG=0x10000000000000000" }, }; void test_core_extern(void) { const uint32_t kern_ver = get_kernel_version(); int err, i, j; struct test_core_extern *skel = NULL; uint64_t *got, *exp; int n = sizeof(*skel->data) / sizeof(uint64_t); for (i = 0; i < ARRAY_SIZE(test_cases); i++) { struct test_case *t = &test_cases[i]; DECLARE_LIBBPF_OPTS(bpf_object_open_opts, opts, .kconfig = t->cfg, ); if (!test__start_subtest(t->name)) continue; skel = test_core_extern__open_opts(&opts); if (!ASSERT_OK_PTR(skel, "skel_open")) goto cleanup; err = test_core_extern__load(skel); if (t->fails) { ASSERT_ERR(err, "skel_load_should_fail"); goto cleanup; } else if (!ASSERT_OK(err, "skel_load")) { goto cleanup; } err = test_core_extern__attach(skel); if (!ASSERT_OK(err, "attach_raw_tp")) goto cleanup; usleep(1); t->data.kern_ver = kern_ver; t->data.missing_val = 0xDEADC0DE; got = (uint64_t *)skel->data; exp = (uint64_t *)&t->data; for (j = 0; j < n; j++) { ASSERT_EQ(got[j], exp[j], "result"); } cleanup: test_core_extern__destroy(skel); skel = NULL; } } |