| 1 | /* |
| 2 | * QEMU I/O channel file test |
| 3 | * |
| 4 | * Copyright (c) 2015 Red Hat, Inc. |
| 5 | * |
| 6 | * This library is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2.1 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * This library is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
| 17 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
| 18 | * |
| 19 | */ |
| 20 | |
| 21 | #include "qemu/osdep.h" |
| 22 | #include "io/channel-file.h" |
| 23 | #include "io/channel-util.h" |
| 24 | #include "io-channel-helpers.h" |
| 25 | #include "qapi/error.h" |
| 26 | #include "qemu/module.h" |
| 27 | |
| 28 | #define TEST_FILE "tests/test-io-channel-file.txt" |
| 29 | #define TEST_MASK 0600 |
| 30 | |
| 31 | /* |
| 32 | * On Windows the stat() function in the C library checks only |
| 33 | * the FAT-style READONLY attribute and does not look at the ACL at all. |
| 34 | */ |
| 35 | #ifdef _WIN32 |
| 36 | #define TEST_MASK_EXPECT 0700 |
| 37 | #else |
| 38 | #define TEST_MASK_EXPECT 0777 |
| 39 | #endif |
| 40 | |
| 41 | static void test_io_channel_file_helper(int flags) |
| 42 | { |
| 43 | QIOChannel *src, *dst; |
| 44 | QIOChannelTest *test; |
| 45 | struct stat st; |
| 46 | mode_t mask; |
| 47 | int ret; |
| 48 | |
| 49 | unlink(TEST_FILE); |
| 50 | src = QIO_CHANNEL(qio_channel_file_new_path( |
| 51 | TEST_FILE, |
| 52 | flags, TEST_MASK, |
| 53 | &error_abort)); |
| 54 | dst = QIO_CHANNEL(qio_channel_file_new_path( |
| 55 | TEST_FILE, |
| 56 | O_RDONLY | O_BINARY, 0, |
| 57 | &error_abort)); |
| 58 | |
| 59 | test = qio_channel_test_new(); |
| 60 | qio_channel_test_run_writer(test, src); |
| 61 | qio_channel_test_run_reader(test, dst); |
| 62 | qio_channel_test_validate(test); |
| 63 | |
| 64 | /* Check that the requested mode took effect. */ |
| 65 | mask = umask(0); |
| 66 | umask(mask); |
| 67 | ret = stat(TEST_FILE, &st); |
| 68 | g_assert_cmpint(ret, >, -1); |
| 69 | g_assert_cmpuint(TEST_MASK & ~mask, ==, st.st_mode & TEST_MASK_EXPECT); |
| 70 | |
| 71 | unlink(TEST_FILE); |
| 72 | object_unref(OBJECT(src)); |
| 73 | object_unref(OBJECT(dst)); |
| 74 | } |
| 75 | |
| 76 | static void test_io_channel_file(void) |
| 77 | { |
| 78 | test_io_channel_file_helper(O_WRONLY | O_CREAT | O_TRUNC | O_BINARY); |
| 79 | } |
| 80 | |
| 81 | static void test_io_channel_file_rdwr(void) |
| 82 | { |
| 83 | test_io_channel_file_helper(O_RDWR | O_CREAT | O_TRUNC | O_BINARY); |
| 84 | } |
| 85 | |
| 86 | static void test_io_channel_fd(void) |
| 87 | { |
| 88 | QIOChannel *ioc; |
| 89 | int fd = -1; |
| 90 | |
| 91 | fd = open(TEST_FILE, O_CREAT | O_TRUNC | O_WRONLY, 0600); |
| 92 | g_assert_cmpint(fd, >, -1); |
| 93 | |
| 94 | ioc = qio_channel_new_fd(fd, &error_abort); |
| 95 | |
| 96 | g_assert_cmpstr(object_get_typename(OBJECT(ioc)), |
| 97 | ==, |
| 98 | TYPE_QIO_CHANNEL_FILE); |
| 99 | |
| 100 | unlink(TEST_FILE); |
| 101 | object_unref(OBJECT(ioc)); |
| 102 | } |
| 103 | |
| 104 | |
| 105 | #ifdef CONFIG_PREADV |
| 106 | static void test_io_channel_pread_all(void) |
| 107 | { |
| 108 | QIOChannel *ioc; |
| 109 | char write_buf[] = "Hello World, pread_all"; |
| 110 | char read_buf[sizeof(write_buf)] = {0}; |
| 111 | int ret; |
| 112 | |
| 113 | unlink(TEST_FILE); |
| 114 | ioc = QIO_CHANNEL(qio_channel_file_new_path( |
| 115 | TEST_FILE, |
| 116 | O_RDWR | O_CREAT | O_TRUNC | O_BINARY, |
| 117 | TEST_MASK, |
| 118 | &error_abort)); |
| 119 | |
| 120 | ret = qio_channel_pwrite_all(ioc, write_buf, sizeof(write_buf), |
| 121 | 0, &error_abort); |
| 122 | g_assert_cmpint(ret, ==, 0); |
| 123 | |
| 124 | /* Read back at offset 0 */ |
| 125 | ret = qio_channel_pread_all(ioc, read_buf, sizeof(read_buf), |
| 126 | 0, &error_abort); |
| 127 | g_assert_cmpint(ret, ==, 0); |
| 128 | g_assert_cmpmem(write_buf, sizeof(write_buf), |
| 129 | read_buf, sizeof(read_buf)); |
| 130 | |
| 131 | /* Read at a non-zero offset */ |
| 132 | memset(read_buf, 0, sizeof(read_buf)); |
| 133 | ret = qio_channel_pread_all(ioc, read_buf, sizeof(write_buf) - 7, |
| 134 | 7, &error_abort); |
| 135 | g_assert_cmpint(ret, ==, 0); |
| 136 | g_assert_cmpmem(write_buf + 7, sizeof(write_buf) - 7, |
| 137 | read_buf, sizeof(write_buf) - 7); |
| 138 | |
| 139 | unlink(TEST_FILE); |
| 140 | object_unref(OBJECT(ioc)); |
| 141 | } |
| 142 | |
| 143 | static void test_io_channel_preadv_all(void) |
| 144 | { |
| 145 | QIOChannel *ioc; |
| 146 | char write_buf[256]; |
| 147 | char read_buf[256] = {0}; |
| 148 | struct iovec write_iov[2]; |
| 149 | struct iovec read_iov[2]; |
| 150 | int ret; |
| 151 | size_t i; |
| 152 | |
| 153 | for (i = 0; i < sizeof(write_buf); i++) { |
| 154 | write_buf[i] = i & 0xff; |
| 155 | } |
| 156 | |
| 157 | unlink(TEST_FILE); |
| 158 | ioc = QIO_CHANNEL(qio_channel_file_new_path( |
| 159 | TEST_FILE, |
| 160 | O_RDWR | O_CREAT | O_TRUNC | O_BINARY, |
| 161 | TEST_MASK, |
| 162 | &error_abort)); |
| 163 | |
| 164 | /* Write using pwritev_all with 2 iovecs */ |
| 165 | write_iov[0].iov_base = write_buf; |
| 166 | write_iov[0].iov_len = 128; |
| 167 | write_iov[1].iov_base = write_buf + 128; |
| 168 | write_iov[1].iov_len = 128; |
| 169 | ret = qio_channel_pwritev_all(ioc, write_iov, 2, 0, &error_abort); |
| 170 | g_assert_cmpint(ret, ==, 0); |
| 171 | |
| 172 | /* Read back using preadv_all with 2 iovecs */ |
| 173 | read_iov[0].iov_base = read_buf; |
| 174 | read_iov[0].iov_len = 128; |
| 175 | read_iov[1].iov_base = read_buf + 128; |
| 176 | read_iov[1].iov_len = 128; |
| 177 | ret = qio_channel_preadv_all(ioc, read_iov, 2, 0, &error_abort); |
| 178 | g_assert_cmpint(ret, ==, 0); |
| 179 | |
| 180 | g_assert_cmpmem(write_buf, sizeof(write_buf), |
| 181 | read_buf, sizeof(read_buf)); |
| 182 | |
| 183 | /* Read at non-zero offset with preadv_all */ |
| 184 | memset(read_buf, 0, sizeof(read_buf)); |
| 185 | read_iov[0].iov_base = read_buf; |
| 186 | read_iov[0].iov_len = 64; |
| 187 | read_iov[1].iov_base = read_buf + 64; |
| 188 | read_iov[1].iov_len = 64; |
| 189 | ret = qio_channel_preadv_all(ioc, read_iov, 2, 128, &error_abort); |
| 190 | g_assert_cmpint(ret, ==, 0); |
| 191 | |
| 192 | g_assert_cmpmem(write_buf + 128, 128, |
| 193 | read_buf, 128); |
| 194 | |
| 195 | unlink(TEST_FILE); |
| 196 | object_unref(OBJECT(ioc)); |
| 197 | } |
| 198 | |
| 199 | static void test_io_channel_preadv_all_eof(void) |
| 200 | { |
| 201 | QIOChannel *ioc; |
| 202 | char write_buf[] = "Hello World, preadv_all_eof"; |
| 203 | char read_buf[sizeof(write_buf)] = {0}; |
| 204 | struct iovec iov; |
| 205 | int ret; |
| 206 | Error *err = NULL; |
| 207 | |
| 208 | unlink(TEST_FILE); |
| 209 | ioc = QIO_CHANNEL(qio_channel_file_new_path( |
| 210 | TEST_FILE, |
| 211 | O_RDWR | O_CREAT | O_TRUNC | O_BINARY, |
| 212 | TEST_MASK, |
| 213 | &error_abort)); |
| 214 | |
| 215 | ret = qio_channel_pwrite_all(ioc, write_buf, sizeof(write_buf), |
| 216 | 0, &error_abort); |
| 217 | g_assert_cmpint(ret, ==, 0); |
| 218 | |
| 219 | /* Full read succeeds: should return 1 */ |
| 220 | iov.iov_base = read_buf; |
| 221 | iov.iov_len = sizeof(read_buf); |
| 222 | ret = qio_channel_preadv_all_eof(ioc, &iov, 1, 0, &error_abort); |
| 223 | g_assert_cmpint(ret, ==, 1); |
| 224 | g_assert_cmpmem(write_buf, sizeof(write_buf), |
| 225 | read_buf, sizeof(read_buf)); |
| 226 | |
| 227 | /* Clean EOF: offset at file end, should return 0 */ |
| 228 | iov.iov_base = read_buf; |
| 229 | iov.iov_len = 1; |
| 230 | ret = qio_channel_preadv_all_eof(ioc, &iov, 1, |
| 231 | sizeof(write_buf), &err); |
| 232 | g_assert_cmpint(ret, ==, 0); |
| 233 | g_assert_null(err); |
| 234 | |
| 235 | /* Partial EOF: start before end, request extends past */ |
| 236 | iov.iov_base = read_buf; |
| 237 | iov.iov_len = 8; |
| 238 | ret = qio_channel_preadv_all_eof(ioc, &iov, 1, |
| 239 | sizeof(write_buf) - 4, &err); |
| 240 | g_assert_cmpint(ret, ==, -1); |
| 241 | g_assert_nonnull(err); |
| 242 | error_free(err); |
| 243 | err = NULL; |
| 244 | |
| 245 | /* Strict wrapper (preadv_all) treats clean EOF as error */ |
| 246 | iov.iov_base = read_buf; |
| 247 | iov.iov_len = 1; |
| 248 | ret = qio_channel_preadv_all(ioc, &iov, 1, |
| 249 | sizeof(write_buf), &err); |
| 250 | g_assert_cmpint(ret, ==, -1); |
| 251 | g_assert_nonnull(err); |
| 252 | error_free(err); |
| 253 | |
| 254 | unlink(TEST_FILE); |
| 255 | object_unref(OBJECT(ioc)); |
| 256 | } |
| 257 | |
| 258 | static void test_io_channel_pread_all_eof(void) |
| 259 | { |
| 260 | QIOChannel *ioc; |
| 261 | char write_buf[] = "Hello World, pread_all_eof"; |
| 262 | char read_buf[sizeof(write_buf)] = {0}; |
| 263 | int ret; |
| 264 | Error *err = NULL; |
| 265 | |
| 266 | unlink(TEST_FILE); |
| 267 | ioc = QIO_CHANNEL(qio_channel_file_new_path( |
| 268 | TEST_FILE, |
| 269 | O_RDWR | O_CREAT | O_TRUNC | O_BINARY, |
| 270 | TEST_MASK, |
| 271 | &error_abort)); |
| 272 | |
| 273 | ret = qio_channel_pwrite_all(ioc, write_buf, sizeof(write_buf), |
| 274 | 0, &error_abort); |
| 275 | g_assert_cmpint(ret, ==, 0); |
| 276 | |
| 277 | /* Full read succeeds: should return 1 */ |
| 278 | ret = qio_channel_pread_all_eof(ioc, read_buf, sizeof(read_buf), |
| 279 | 0, &error_abort); |
| 280 | g_assert_cmpint(ret, ==, 1); |
| 281 | g_assert_cmpmem(write_buf, sizeof(write_buf), |
| 282 | read_buf, sizeof(read_buf)); |
| 283 | |
| 284 | /* Clean EOF: should return 0 */ |
| 285 | ret = qio_channel_pread_all_eof(ioc, read_buf, 1, |
| 286 | sizeof(write_buf), &err); |
| 287 | g_assert_cmpint(ret, ==, 0); |
| 288 | g_assert_null(err); |
| 289 | |
| 290 | /* Partial EOF: should return -1 */ |
| 291 | ret = qio_channel_pread_all_eof(ioc, read_buf, 8, |
| 292 | sizeof(write_buf) - 4, &err); |
| 293 | g_assert_cmpint(ret, ==, -1); |
| 294 | g_assert_nonnull(err); |
| 295 | error_free(err); |
| 296 | |
| 297 | unlink(TEST_FILE); |
| 298 | object_unref(OBJECT(ioc)); |
| 299 | } |
| 300 | #endif /* CONFIG_PREADV */ |
| 301 | |
| 302 | #ifndef _WIN32 |
| 303 | static void test_io_channel_pipe(bool async) |
| 304 | { |
| 305 | QIOChannel *src, *dst; |
| 306 | QIOChannelTest *test; |
| 307 | int fd[2]; |
| 308 | |
| 309 | if (!g_unix_open_pipe(fd, FD_CLOEXEC, NULL)) { |
| 310 | perror("pipe"); |
| 311 | abort(); |
| 312 | } |
| 313 | |
| 314 | src = QIO_CHANNEL(qio_channel_file_new_fd(fd[1])); |
| 315 | dst = QIO_CHANNEL(qio_channel_file_new_fd(fd[0])); |
| 316 | |
| 317 | test = qio_channel_test_new(); |
| 318 | qio_channel_test_run_threads(test, async, src, dst); |
| 319 | qio_channel_test_validate(test); |
| 320 | |
| 321 | object_unref(OBJECT(src)); |
| 322 | object_unref(OBJECT(dst)); |
| 323 | } |
| 324 | |
| 325 | |
| 326 | static void test_io_channel_pipe_async(void) |
| 327 | { |
| 328 | test_io_channel_pipe(true); |
| 329 | } |
| 330 | |
| 331 | static void test_io_channel_pipe_sync(void) |
| 332 | { |
| 333 | test_io_channel_pipe(false); |
| 334 | } |
| 335 | #endif /* ! _WIN32 */ |
| 336 | |
| 337 | |
| 338 | int main(int argc, char **argv) |
| 339 | { |
| 340 | module_call_init(MODULE_INIT_QOM); |
| 341 | |
| 342 | g_test_init(&argc, &argv, NULL); |
| 343 | |
| 344 | g_test_add_func("/io/channel/file", test_io_channel_file); |
| 345 | g_test_add_func("/io/channel/file/rdwr", test_io_channel_file_rdwr); |
| 346 | g_test_add_func("/io/channel/file/fd", test_io_channel_fd); |
| 347 | #ifdef CONFIG_PREADV |
| 348 | g_test_add_func("/io/channel/file/pread-all", |
| 349 | test_io_channel_pread_all); |
| 350 | g_test_add_func("/io/channel/file/preadv-all", |
| 351 | test_io_channel_preadv_all); |
| 352 | g_test_add_func("/io/channel/file/preadv-all-eof", |
| 353 | test_io_channel_preadv_all_eof); |
| 354 | g_test_add_func("/io/channel/file/pread-all-eof", |
| 355 | test_io_channel_pread_all_eof); |
| 356 | #endif |
| 357 | #ifndef _WIN32 |
| 358 | g_test_add_func("/io/channel/pipe/sync", test_io_channel_pipe_sync); |
| 359 | g_test_add_func("/io/channel/pipe/async", test_io_channel_pipe_async); |
| 360 | #endif |
| 361 | return g_test_run(); |
| 362 | } |