| 1 | /* |
| 2 | * Copyright (C) 2020 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
| 3 | * |
| 4 | * SPDX-License-Identifier: LGPL-2.1-only |
| 5 | * |
| 6 | */ |
| 7 | |
| 8 | #include <common/sessiond-comm/payload.h> |
| 9 | #include <common/sessiond-comm/payload-view.h> |
| 10 | #include <tap/tap.h> |
| 11 | |
| 12 | static const int TEST_COUNT = 5; |
| 13 | |
| 14 | /* For error.h */ |
| 15 | int lttng_opt_quiet = 1; |
| 16 | int lttng_opt_verbose; |
| 17 | int lttng_opt_mi; |
| 18 | |
| 19 | static void test_fd_push_pop_order(void) |
| 20 | { |
| 21 | int ret, i; |
| 22 | struct lttng_payload payload; |
| 23 | |
| 24 | lttng_payload_init(&payload); |
| 25 | |
| 26 | diag("Validating fd push/pop order"); |
| 27 | for (i = 0; i < 3; i++) { |
| 28 | ret = lttng_payload_push_fd(&payload, i); |
| 29 | if (ret) { |
| 30 | break; |
| 31 | } |
| 32 | } |
| 33 | ok(ret == 0, "Added three file descriptors to an lttng_payload"); |
| 34 | |
| 35 | { |
| 36 | bool fail_pop = false; |
| 37 | struct lttng_payload_view view = |
| 38 | lttng_payload_view_from_payload( |
| 39 | &payload, 0, -1); |
| 40 | |
| 41 | for (i = 0; i < 3; i++) { |
| 42 | ret = lttng_payload_view_pop_fd(&view); |
| 43 | fail_pop |= ret != i; |
| 44 | } |
| 45 | |
| 46 | ok(!fail_pop, "File descriptors are popped from a payload view in the order of insertion"); |
| 47 | } |
| 48 | |
| 49 | lttng_payload_reset(&payload); |
| 50 | } |
| 51 | |
| 52 | static void test_fd_push_pop_imbalance(void) |
| 53 | { |
| 54 | int ret, i; |
| 55 | struct lttng_payload payload; |
| 56 | const char * const test_description = "Error reported when popping more file descriptors than were pushed"; |
| 57 | |
| 58 | lttng_payload_init(&payload); |
| 59 | |
| 60 | diag("Validating fd pop imbalance"); |
| 61 | for (i = 0; i < 10; i++) { |
| 62 | ret = lttng_payload_push_fd(&payload, i); |
| 63 | if (ret) { |
| 64 | break; |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | { |
| 69 | struct lttng_payload_view view = |
| 70 | lttng_payload_view_from_payload( |
| 71 | &payload, 0, -1); |
| 72 | |
| 73 | for (i = 0; i < 10; i++) { |
| 74 | ret = lttng_payload_view_pop_fd(&view); |
| 75 | if (ret == -1) { |
| 76 | goto fail; |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | ret = lttng_payload_view_pop_fd(&view); |
| 81 | ok(ret == -1, test_description); |
| 82 | } |
| 83 | |
| 84 | lttng_payload_reset(&payload); |
| 85 | return; |
| 86 | fail: |
| 87 | fail(test_description); |
| 88 | lttng_payload_reset(&payload); |
| 89 | } |
| 90 | |
| 91 | static void test_fd_pop_fd_root_views(void) |
| 92 | { |
| 93 | int ret, i; |
| 94 | const int fd = 42; |
| 95 | struct lttng_payload payload; |
| 96 | const char * const test_description = "Same file descriptor returned when popping from different top-level views"; |
| 97 | |
| 98 | lttng_payload_init(&payload); |
| 99 | |
| 100 | diag("Validating root view fd pop behaviour"); |
| 101 | ret = lttng_payload_push_fd(&payload, fd); |
| 102 | if (ret) { |
| 103 | goto fail; |
| 104 | } |
| 105 | |
| 106 | for (i = 0; i < 5; i++) { |
| 107 | struct lttng_payload_view view = |
| 108 | lttng_payload_view_from_payload( |
| 109 | &payload, 0, -1); |
| 110 | |
| 111 | ret = lttng_payload_view_pop_fd(&view); |
| 112 | if (ret != fd) { |
| 113 | goto fail; |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | lttng_payload_reset(&payload); |
| 118 | pass(test_description); |
| 119 | return; |
| 120 | fail: |
| 121 | lttng_payload_reset(&payload); |
| 122 | fail(test_description); |
| 123 | } |
| 124 | |
| 125 | static void test_fd_pop_fd_descendant_views(void) |
| 126 | { |
| 127 | int ret; |
| 128 | const int fd1 = 42, fd2 = 1837; |
| 129 | struct lttng_payload payload; |
| 130 | const char * const test_description = "Different file descriptors returned when popping from descendant views"; |
| 131 | |
| 132 | lttng_payload_init(&payload); |
| 133 | |
| 134 | diag("Validating descendant view fd pop behaviour"); |
| 135 | ret = lttng_payload_push_fd(&payload, fd1); |
| 136 | if (ret) { |
| 137 | goto fail; |
| 138 | } |
| 139 | |
| 140 | ret = lttng_payload_push_fd(&payload, fd2); |
| 141 | if (ret) { |
| 142 | goto fail; |
| 143 | } |
| 144 | |
| 145 | { |
| 146 | struct lttng_payload_view view1 = |
| 147 | lttng_payload_view_from_payload( |
| 148 | &payload, 0, -1); |
| 149 | struct lttng_payload_view view2 = |
| 150 | lttng_payload_view_from_view( |
| 151 | &view1, 0, -1); |
| 152 | |
| 153 | ret = lttng_payload_view_pop_fd(&view1); |
| 154 | if (ret != fd1) { |
| 155 | goto fail; |
| 156 | } |
| 157 | |
| 158 | ret = lttng_payload_view_pop_fd(&view2); |
| 159 | if (ret != fd2) { |
| 160 | goto fail; |
| 161 | } |
| 162 | } |
| 163 | |
| 164 | lttng_payload_reset(&payload); |
| 165 | pass(test_description); |
| 166 | return; |
| 167 | fail: |
| 168 | lttng_payload_reset(&payload); |
| 169 | fail(test_description); |
| 170 | } |
| 171 | |
| 172 | int main(void) |
| 173 | { |
| 174 | plan_tests(TEST_COUNT); |
| 175 | |
| 176 | test_fd_push_pop_order(); |
| 177 | test_fd_push_pop_imbalance(); |
| 178 | test_fd_pop_fd_root_views(); |
| 179 | test_fd_pop_fd_descendant_views(); |
| 180 | |
| 181 | return exit_status(); |
| 182 | } |