Joe Onorato | 4535e40 | 2009-05-15 09:07:06 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2009 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
Joe Onorato | 3ad977b | 2009-05-05 11:50:51 -0700 | [diff] [blame] | 17 | #define LOG_TAG "file_backup_helper" |
| 18 | |
| 19 | #include <utils/backup_helpers.h> |
| 20 | |
| 21 | #include <utils/KeyedVector.h> |
| 22 | #include <utils/ByteOrder.h> |
| 23 | #include <utils/String8.h> |
| 24 | |
| 25 | #include <errno.h> |
| 26 | #include <sys/types.h> |
| 27 | #include <sys/uio.h> |
| 28 | #include <sys/stat.h> |
| 29 | #include <stdio.h> |
| 30 | #include <stdlib.h> |
| 31 | #include <unistd.h> |
Joe Onorato | c825d3e | 2009-05-06 12:55:46 -0400 | [diff] [blame] | 32 | #include <utime.h> |
Joe Onorato | 3ad977b | 2009-05-05 11:50:51 -0700 | [diff] [blame] | 33 | #include <fcntl.h> |
| 34 | #include <zlib.h> |
| 35 | |
| 36 | #include <cutils/log.h> |
| 37 | |
Joe Onorato | 4535e40 | 2009-05-15 09:07:06 -0400 | [diff] [blame] | 38 | namespace android { |
Joe Onorato | 3ad977b | 2009-05-05 11:50:51 -0700 | [diff] [blame] | 39 | |
| 40 | #define MAGIC0 0x70616e53 // Snap |
| 41 | #define MAGIC1 0x656c6946 // File |
| 42 | |
Joe Onorato | 4535e40 | 2009-05-15 09:07:06 -0400 | [diff] [blame] | 43 | #if TEST_BACKUP_HELPERS |
| 44 | #define LOGP(x...) printf(x) |
| 45 | #else |
Joe Onorato | 290bb01 | 2009-05-13 18:57:29 -0400 | [diff] [blame] | 46 | #define LOGP(x...) LOGD(x) |
Joe Onorato | 4535e40 | 2009-05-15 09:07:06 -0400 | [diff] [blame] | 47 | #endif |
Joe Onorato | 290bb01 | 2009-05-13 18:57:29 -0400 | [diff] [blame] | 48 | |
Joe Onorato | 3ad977b | 2009-05-05 11:50:51 -0700 | [diff] [blame] | 49 | struct SnapshotHeader { |
| 50 | int magic0; |
| 51 | int fileCount; |
| 52 | int magic1; |
| 53 | int totalSize; |
| 54 | }; |
| 55 | |
| 56 | struct FileState { |
| 57 | int modTime_sec; |
| 58 | int modTime_nsec; |
| 59 | int size; |
| 60 | int crc32; |
| 61 | int nameLen; |
| 62 | }; |
| 63 | |
| 64 | const static int ROUND_UP[4] = { 0, 3, 2, 1 }; |
| 65 | |
| 66 | static inline int |
| 67 | round_up(int n) |
| 68 | { |
| 69 | return n + ROUND_UP[n % 4]; |
| 70 | } |
| 71 | |
| 72 | static int |
| 73 | read_snapshot_file(int fd, KeyedVector<String8,FileState>* snapshot) |
| 74 | { |
| 75 | int bytesRead = 0; |
| 76 | int amt; |
| 77 | SnapshotHeader header; |
| 78 | |
| 79 | amt = read(fd, &header, sizeof(header)); |
| 80 | if (amt != sizeof(header)) { |
| 81 | return errno; |
| 82 | } |
| 83 | bytesRead += amt; |
| 84 | |
| 85 | if (header.magic0 != MAGIC0 || header.magic1 != MAGIC1) { |
| 86 | LOGW("read_snapshot_file header.magic0=0x%08x magic1=0x%08x", header.magic0, header.magic1); |
| 87 | return 1; |
| 88 | } |
| 89 | |
| 90 | for (int i=0; i<header.fileCount; i++) { |
| 91 | FileState file; |
| 92 | char filenameBuf[128]; |
| 93 | |
| 94 | amt = read(fd, &file, sizeof(file)); |
| 95 | if (amt != sizeof(file)) { |
| 96 | LOGW("read_snapshot_file FileState truncated/error with read at %d bytes\n", bytesRead); |
| 97 | return 1; |
| 98 | } |
| 99 | bytesRead += amt; |
| 100 | |
| 101 | // filename is not NULL terminated, but it is padded |
| 102 | int nameBufSize = round_up(file.nameLen); |
| 103 | char* filename = nameBufSize <= (int)sizeof(filenameBuf) |
| 104 | ? filenameBuf |
| 105 | : (char*)malloc(nameBufSize); |
| 106 | amt = read(fd, filename, nameBufSize); |
| 107 | if (amt == nameBufSize) { |
| 108 | snapshot->add(String8(filename, file.nameLen), file); |
| 109 | } |
| 110 | bytesRead += amt; |
| 111 | if (filename != filenameBuf) { |
| 112 | free(filename); |
| 113 | } |
| 114 | if (amt != nameBufSize) { |
| 115 | LOGW("read_snapshot_file filename truncated/error with read at %d bytes\n", bytesRead); |
| 116 | return 1; |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | if (header.totalSize != bytesRead) { |
| 121 | LOGW("read_snapshot_file length mismatch: header.totalSize=%d bytesRead=%d\n", |
| 122 | header.totalSize, bytesRead); |
| 123 | return 1; |
| 124 | } |
| 125 | |
| 126 | return 0; |
| 127 | } |
| 128 | |
| 129 | static int |
| 130 | write_snapshot_file(int fd, const KeyedVector<String8,FileState>& snapshot) |
| 131 | { |
| 132 | int bytesWritten = sizeof(SnapshotHeader); |
| 133 | // preflight size |
| 134 | const int N = snapshot.size(); |
| 135 | for (int i=0; i<N; i++) { |
| 136 | const String8& name = snapshot.keyAt(i); |
| 137 | bytesWritten += sizeof(FileState) + round_up(name.length()); |
| 138 | } |
| 139 | |
Joe Onorato | 4535e40 | 2009-05-15 09:07:06 -0400 | [diff] [blame] | 140 | LOGP("write_snapshot_file fd=%d\n", fd); |
| 141 | |
Joe Onorato | 3ad977b | 2009-05-05 11:50:51 -0700 | [diff] [blame] | 142 | int amt; |
| 143 | SnapshotHeader header = { MAGIC0, N, MAGIC1, bytesWritten }; |
| 144 | |
| 145 | amt = write(fd, &header, sizeof(header)); |
| 146 | if (amt != sizeof(header)) { |
| 147 | LOGW("write_snapshot_file error writing header %s", strerror(errno)); |
| 148 | return errno; |
| 149 | } |
| 150 | |
| 151 | for (int i=0; i<header.fileCount; i++) { |
| 152 | const String8& name = snapshot.keyAt(i); |
| 153 | FileState file = snapshot.valueAt(i); |
| 154 | int nameLen = file.nameLen = name.length(); |
| 155 | |
| 156 | amt = write(fd, &file, sizeof(file)); |
| 157 | if (amt != sizeof(file)) { |
| 158 | LOGW("write_snapshot_file error writing header %s", strerror(errno)); |
| 159 | return 1; |
| 160 | } |
| 161 | |
| 162 | // filename is not NULL terminated, but it is padded |
| 163 | amt = write(fd, name.string(), nameLen); |
| 164 | if (amt != nameLen) { |
| 165 | LOGW("write_snapshot_file error writing filename %s", strerror(errno)); |
| 166 | return 1; |
| 167 | } |
| 168 | int paddingLen = ROUND_UP[nameLen % 4]; |
| 169 | if (paddingLen != 0) { |
| 170 | int padding = 0xabababab; |
| 171 | amt = write(fd, &padding, paddingLen); |
| 172 | if (amt != paddingLen) { |
| 173 | LOGW("write_snapshot_file error writing %d bytes of filename padding %s", |
| 174 | paddingLen, strerror(errno)); |
| 175 | return 1; |
| 176 | } |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | return 0; |
| 181 | } |
| 182 | |
| 183 | static int |
| 184 | write_delete_file(const String8& key) |
| 185 | { |
Joe Onorato | 290bb01 | 2009-05-13 18:57:29 -0400 | [diff] [blame] | 186 | LOGP("write_delete_file %s\n", key.string()); |
Joe Onorato | 3ad977b | 2009-05-05 11:50:51 -0700 | [diff] [blame] | 187 | return 0; |
| 188 | } |
| 189 | |
| 190 | static int |
| 191 | write_update_file(const String8& realFilename, const String8& key) |
| 192 | { |
Joe Onorato | 290bb01 | 2009-05-13 18:57:29 -0400 | [diff] [blame] | 193 | LOGP("write_update_file %s (%s)\n", realFilename.string(), key.string()); |
Joe Onorato | 3ad977b | 2009-05-05 11:50:51 -0700 | [diff] [blame] | 194 | return 0; |
| 195 | } |
| 196 | |
| 197 | static int |
| 198 | compute_crc32(const String8& filename) |
| 199 | { |
| 200 | const int bufsize = 4*1024; |
| 201 | int amt; |
| 202 | |
| 203 | int fd = open(filename.string(), O_RDONLY); |
| 204 | if (fd == -1) { |
| 205 | return -1; |
| 206 | } |
| 207 | |
| 208 | char* buf = (char*)malloc(bufsize); |
| 209 | int crc = crc32(0L, Z_NULL, 0); |
| 210 | |
| 211 | while ((amt = read(fd, buf, bufsize)) != 0) { |
| 212 | crc = crc32(crc, (Bytef*)buf, amt); |
| 213 | } |
| 214 | |
| 215 | close(fd); |
| 216 | free(buf); |
| 217 | |
| 218 | return crc; |
| 219 | } |
| 220 | |
| 221 | int |
Joe Onorato | 290bb01 | 2009-05-13 18:57:29 -0400 | [diff] [blame] | 222 | back_up_files(int oldSnapshotFD, int oldDataStream, int newSnapshotFD, |
Joe Onorato | 3ad977b | 2009-05-05 11:50:51 -0700 | [diff] [blame] | 223 | char const* fileBase, char const* const* files, int fileCount) |
| 224 | { |
| 225 | int err; |
| 226 | const String8 base(fileBase); |
| 227 | KeyedVector<String8,FileState> oldSnapshot; |
| 228 | KeyedVector<String8,FileState> newSnapshot; |
| 229 | |
| 230 | if (oldSnapshotFD != -1) { |
| 231 | err = read_snapshot_file(oldSnapshotFD, &oldSnapshot); |
| 232 | if (err != 0) { |
| 233 | // On an error, treat this as a full backup. |
| 234 | oldSnapshot.clear(); |
| 235 | } |
| 236 | } |
| 237 | |
| 238 | for (int i=0; i<fileCount; i++) { |
| 239 | String8 name(files[i]); |
| 240 | FileState s; |
| 241 | struct stat st; |
| 242 | String8 realFilename(base); |
| 243 | realFilename.appendPath(name); |
| 244 | |
| 245 | err = stat(realFilename.string(), &st); |
| 246 | if (err != 0) { |
| 247 | LOGW("Error stating file %s", realFilename.string()); |
| 248 | continue; |
| 249 | } |
| 250 | |
| 251 | s.modTime_sec = st.st_mtime; |
Joe Onorato | c825d3e | 2009-05-06 12:55:46 -0400 | [diff] [blame] | 252 | s.modTime_nsec = 0; // workaround sim breakage |
| 253 | //s.modTime_nsec = st.st_mtime_nsec; |
Joe Onorato | 3ad977b | 2009-05-05 11:50:51 -0700 | [diff] [blame] | 254 | s.size = st.st_size; |
| 255 | s.crc32 = compute_crc32(realFilename); |
| 256 | |
| 257 | newSnapshot.add(name, s); |
| 258 | } |
| 259 | |
| 260 | int n = 0; |
| 261 | int N = oldSnapshot.size(); |
| 262 | int m = 0; |
| 263 | |
| 264 | while (n<N && m<fileCount) { |
| 265 | const String8& p = oldSnapshot.keyAt(n); |
| 266 | const String8& q = newSnapshot.keyAt(m); |
| 267 | int cmp = p.compare(q); |
| 268 | if (cmp > 0) { |
| 269 | // file added |
| 270 | String8 realFilename(base); |
| 271 | realFilename.appendPath(q); |
Joe Onorato | 4535e40 | 2009-05-15 09:07:06 -0400 | [diff] [blame] | 272 | LOGP("file added: %s\n", realFilename.string()); |
Joe Onorato | 3ad977b | 2009-05-05 11:50:51 -0700 | [diff] [blame] | 273 | write_update_file(realFilename, q); |
| 274 | m++; |
| 275 | } |
| 276 | else if (cmp < 0) { |
| 277 | // file removed |
Joe Onorato | 4535e40 | 2009-05-15 09:07:06 -0400 | [diff] [blame] | 278 | LOGP("file removed: %s\n", p.string()); |
Joe Onorato | 3ad977b | 2009-05-05 11:50:51 -0700 | [diff] [blame] | 279 | write_delete_file(p); |
| 280 | n++; |
| 281 | } |
| 282 | else { |
| 283 | // both files exist, check them |
| 284 | String8 realFilename(base); |
| 285 | realFilename.appendPath(q); |
| 286 | const FileState& f = oldSnapshot.valueAt(n); |
| 287 | const FileState& g = newSnapshot.valueAt(m); |
| 288 | |
Joe Onorato | 290bb01 | 2009-05-13 18:57:29 -0400 | [diff] [blame] | 289 | LOGP("%s\n", q.string()); |
| 290 | LOGP(" new: modTime=%d,%d size=%-3d crc32=0x%08x\n", |
Joe Onorato | 3ad977b | 2009-05-05 11:50:51 -0700 | [diff] [blame] | 291 | f.modTime_sec, f.modTime_nsec, f.size, f.crc32); |
Joe Onorato | 290bb01 | 2009-05-13 18:57:29 -0400 | [diff] [blame] | 292 | LOGP(" old: modTime=%d,%d size=%-3d crc32=0x%08x\n", |
Joe Onorato | 3ad977b | 2009-05-05 11:50:51 -0700 | [diff] [blame] | 293 | g.modTime_sec, g.modTime_nsec, g.size, g.crc32); |
| 294 | if (f.modTime_sec != g.modTime_sec || f.modTime_nsec != g.modTime_nsec |
| 295 | || f.size != g.size || f.crc32 != g.crc32) { |
| 296 | write_update_file(realFilename, p); |
| 297 | } |
| 298 | n++; |
| 299 | m++; |
| 300 | } |
| 301 | } |
| 302 | |
| 303 | // these were deleted |
| 304 | while (n<N) { |
| 305 | write_delete_file(oldSnapshot.keyAt(n)); |
| 306 | n++; |
| 307 | } |
| 308 | |
| 309 | // these were added |
| 310 | while (m<fileCount) { |
| 311 | const String8& q = newSnapshot.keyAt(m); |
| 312 | String8 realFilename(base); |
| 313 | realFilename.appendPath(q); |
| 314 | write_update_file(realFilename, q); |
| 315 | m++; |
| 316 | } |
| 317 | |
| 318 | err = write_snapshot_file(newSnapshotFD, newSnapshot); |
| 319 | |
| 320 | return 0; |
| 321 | } |
| 322 | |
| 323 | #if TEST_BACKUP_HELPERS |
| 324 | |
| 325 | #define SCRATCH_DIR "/data/backup_helper_test/" |
| 326 | |
| 327 | static int |
| 328 | write_text_file(const char* path, const char* data) |
| 329 | { |
| 330 | int amt; |
| 331 | int fd; |
| 332 | int len; |
| 333 | |
| 334 | fd = creat(path, 0666); |
| 335 | if (fd == -1) { |
| 336 | fprintf(stderr, "creat %s failed\n", path); |
| 337 | return errno; |
| 338 | } |
| 339 | |
| 340 | len = strlen(data); |
| 341 | amt = write(fd, data, len); |
| 342 | if (amt != len) { |
| 343 | fprintf(stderr, "error (%s) writing to file %s\n", strerror(errno), path); |
| 344 | return errno; |
| 345 | } |
| 346 | |
| 347 | close(fd); |
| 348 | |
| 349 | return 0; |
| 350 | } |
| 351 | |
| 352 | static int |
| 353 | compare_file(const char* path, const unsigned char* data, int len) |
| 354 | { |
| 355 | int fd; |
| 356 | int amt; |
| 357 | |
| 358 | fd = open(path, O_RDONLY); |
| 359 | if (fd == -1) { |
| 360 | fprintf(stderr, "compare_file error (%s) opening %s\n", strerror(errno), path); |
| 361 | return errno; |
| 362 | } |
| 363 | |
| 364 | unsigned char* contents = (unsigned char*)malloc(len); |
| 365 | if (contents == NULL) { |
| 366 | fprintf(stderr, "malloc(%d) failed\n", len); |
| 367 | return ENOMEM; |
| 368 | } |
| 369 | |
| 370 | bool sizesMatch = true; |
| 371 | amt = lseek(fd, 0, SEEK_END); |
| 372 | if (amt != len) { |
| 373 | fprintf(stderr, "compare_file file length should be %d, was %d\n", len, amt); |
| 374 | sizesMatch = false; |
| 375 | } |
| 376 | lseek(fd, 0, SEEK_SET); |
| 377 | |
| 378 | int readLen = amt < len ? amt : len; |
| 379 | amt = read(fd, contents, readLen); |
| 380 | if (amt != readLen) { |
| 381 | fprintf(stderr, "compare_file read expected %d bytes but got %d\n", len, amt); |
| 382 | } |
| 383 | |
| 384 | bool contentsMatch = true; |
| 385 | for (int i=0; i<readLen; i++) { |
| 386 | if (data[i] != contents[i]) { |
| 387 | if (contentsMatch) { |
| 388 | fprintf(stderr, "compare_file contents are different: (index, expected, actual)\n"); |
| 389 | contentsMatch = false; |
| 390 | } |
| 391 | fprintf(stderr, " [%-2d] %02x %02x\n", i, data[i], contents[i]); |
| 392 | } |
| 393 | } |
| 394 | |
| 395 | return contentsMatch && sizesMatch ? 0 : 1; |
| 396 | } |
| 397 | |
| 398 | int |
| 399 | backup_helper_test_empty() |
| 400 | { |
| 401 | int err; |
| 402 | int fd; |
| 403 | KeyedVector<String8,FileState> snapshot; |
| 404 | const char* filename = SCRATCH_DIR "backup_helper_test_empty.snap"; |
| 405 | |
| 406 | system("rm -r " SCRATCH_DIR); |
| 407 | mkdir(SCRATCH_DIR, 0777); |
| 408 | |
| 409 | // write |
| 410 | fd = creat(filename, 0666); |
| 411 | if (fd == -1) { |
| 412 | fprintf(stderr, "error creating %s\n", filename); |
| 413 | return 1; |
| 414 | } |
| 415 | |
| 416 | err = write_snapshot_file(fd, snapshot); |
| 417 | |
| 418 | close(fd); |
| 419 | |
| 420 | if (err != 0) { |
| 421 | fprintf(stderr, "write_snapshot_file reported error %d (%s)\n", err, strerror(err)); |
| 422 | return err; |
| 423 | } |
| 424 | |
| 425 | static const unsigned char correct_data[] = { |
| 426 | 0x53, 0x6e, 0x61, 0x70, 0x00, 0x00, 0x00, 0x00, |
| 427 | 0x46, 0x69, 0x6c, 0x65, 0x10, 0x00, 0x00, 0x00 |
| 428 | }; |
| 429 | |
| 430 | err = compare_file(filename, correct_data, sizeof(correct_data)); |
| 431 | if (err != 0) { |
| 432 | return err; |
| 433 | } |
| 434 | |
| 435 | // read |
| 436 | fd = open(filename, O_RDONLY); |
| 437 | if (fd == -1) { |
| 438 | fprintf(stderr, "error opening for read %s\n", filename); |
| 439 | return 1; |
| 440 | } |
| 441 | |
| 442 | KeyedVector<String8,FileState> readSnapshot; |
| 443 | err = read_snapshot_file(fd, &readSnapshot); |
| 444 | if (err != 0) { |
| 445 | fprintf(stderr, "read_snapshot_file failed %d\n", err); |
| 446 | return err; |
| 447 | } |
| 448 | |
| 449 | if (readSnapshot.size() != 0) { |
| 450 | fprintf(stderr, "readSnapshot should be length 0\n"); |
| 451 | return 1; |
| 452 | } |
| 453 | |
| 454 | return 0; |
| 455 | } |
| 456 | |
| 457 | int |
| 458 | backup_helper_test_four() |
| 459 | { |
| 460 | int err; |
| 461 | int fd; |
| 462 | KeyedVector<String8,FileState> snapshot; |
| 463 | const char* filename = SCRATCH_DIR "backup_helper_test_four.snap"; |
| 464 | |
| 465 | system("rm -r " SCRATCH_DIR); |
| 466 | mkdir(SCRATCH_DIR, 0777); |
| 467 | |
| 468 | // write |
| 469 | fd = creat(filename, 0666); |
| 470 | if (fd == -1) { |
| 471 | fprintf(stderr, "error opening %s\n", filename); |
| 472 | return 1; |
| 473 | } |
| 474 | |
| 475 | String8 filenames[4]; |
| 476 | FileState states[4]; |
| 477 | |
| 478 | states[0].modTime_sec = 0xfedcba98; |
| 479 | states[0].modTime_nsec = 0xdeadbeef; |
| 480 | states[0].size = 0xababbcbc; |
| 481 | states[0].crc32 = 0x12345678; |
| 482 | states[0].nameLen = -12; |
| 483 | filenames[0] = String8("bytes_of_padding"); |
| 484 | snapshot.add(filenames[0], states[0]); |
| 485 | |
| 486 | states[1].modTime_sec = 0x93400031; |
| 487 | states[1].modTime_nsec = 0xdeadbeef; |
| 488 | states[1].size = 0x88557766; |
| 489 | states[1].crc32 = 0x22334422; |
| 490 | states[1].nameLen = -1; |
| 491 | filenames[1] = String8("bytes_of_padding3"); |
| 492 | snapshot.add(filenames[1], states[1]); |
| 493 | |
| 494 | states[2].modTime_sec = 0x33221144; |
| 495 | states[2].modTime_nsec = 0xdeadbeef; |
| 496 | states[2].size = 0x11223344; |
| 497 | states[2].crc32 = 0x01122334; |
| 498 | states[2].nameLen = 0; |
| 499 | filenames[2] = String8("bytes_of_padding_2"); |
| 500 | snapshot.add(filenames[2], states[2]); |
| 501 | |
| 502 | states[3].modTime_sec = 0x33221144; |
| 503 | states[3].modTime_nsec = 0xdeadbeef; |
| 504 | states[3].size = 0x11223344; |
| 505 | states[3].crc32 = 0x01122334; |
| 506 | states[3].nameLen = 0; |
| 507 | filenames[3] = String8("bytes_of_padding__1"); |
| 508 | snapshot.add(filenames[3], states[3]); |
| 509 | |
| 510 | err = write_snapshot_file(fd, snapshot); |
| 511 | |
| 512 | close(fd); |
| 513 | |
| 514 | if (err != 0) { |
| 515 | fprintf(stderr, "write_snapshot_file reported error %d (%s)\n", err, strerror(err)); |
| 516 | return err; |
| 517 | } |
| 518 | |
| 519 | static const unsigned char correct_data[] = { |
| 520 | // header |
| 521 | 0x53, 0x6e, 0x61, 0x70, 0x04, 0x00, 0x00, 0x00, |
| 522 | 0x46, 0x69, 0x6c, 0x65, 0xac, 0x00, 0x00, 0x00, |
| 523 | |
| 524 | // bytes_of_padding |
| 525 | 0x98, 0xba, 0xdc, 0xfe, 0xef, 0xbe, 0xad, 0xde, |
| 526 | 0xbc, 0xbc, 0xab, 0xab, 0x78, 0x56, 0x34, 0x12, |
| 527 | 0x10, 0x00, 0x00, 0x00, 0x62, 0x79, 0x74, 0x65, |
| 528 | 0x73, 0x5f, 0x6f, 0x66, 0x5f, 0x70, 0x61, 0x64, |
| 529 | 0x64, 0x69, 0x6e, 0x67, |
| 530 | |
| 531 | // bytes_of_padding3 |
| 532 | 0x31, 0x00, 0x40, 0x93, 0xef, 0xbe, 0xad, 0xde, |
| 533 | 0x66, 0x77, 0x55, 0x88, 0x22, 0x44, 0x33, 0x22, |
| 534 | 0x11, 0x00, 0x00, 0x00, 0x62, 0x79, 0x74, 0x65, |
| 535 | 0x73, 0x5f, 0x6f, 0x66, 0x5f, 0x70, 0x61, 0x64, |
| 536 | 0x64, 0x69, 0x6e, 0x67, 0x33, 0xab, 0xab, 0xab, |
| 537 | |
| 538 | // bytes of padding2 |
| 539 | 0x44, 0x11, 0x22, 0x33, 0xef, 0xbe, 0xad, 0xde, |
| 540 | 0x44, 0x33, 0x22, 0x11, 0x34, 0x23, 0x12, 0x01, |
| 541 | 0x12, 0x00, 0x00, 0x00, 0x62, 0x79, 0x74, 0x65, |
| 542 | 0x73, 0x5f, 0x6f, 0x66, 0x5f, 0x70, 0x61, 0x64, |
| 543 | 0x64, 0x69, 0x6e, 0x67, 0x5f, 0x32, 0xab, 0xab, |
| 544 | |
| 545 | // bytes of padding3 |
| 546 | 0x44, 0x11, 0x22, 0x33, 0xef, 0xbe, 0xad, 0xde, |
| 547 | 0x44, 0x33, 0x22, 0x11, 0x34, 0x23, 0x12, 0x01, |
| 548 | 0x13, 0x00, 0x00, 0x00, 0x62, 0x79, 0x74, 0x65, |
| 549 | 0x73, 0x5f, 0x6f, 0x66, 0x5f, 0x70, 0x61, 0x64, |
| 550 | 0x64, 0x69, 0x6e, 0x67, 0x5f, 0x5f, 0x31, 0xab |
| 551 | }; |
| 552 | |
| 553 | err = compare_file(filename, correct_data, sizeof(correct_data)); |
| 554 | if (err != 0) { |
| 555 | return err; |
| 556 | } |
| 557 | |
| 558 | // read |
| 559 | fd = open(filename, O_RDONLY); |
| 560 | if (fd == -1) { |
| 561 | fprintf(stderr, "error opening for read %s\n", filename); |
| 562 | return 1; |
| 563 | } |
| 564 | |
| 565 | |
| 566 | KeyedVector<String8,FileState> readSnapshot; |
| 567 | err = read_snapshot_file(fd, &readSnapshot); |
| 568 | if (err != 0) { |
| 569 | fprintf(stderr, "read_snapshot_file failed %d\n", err); |
| 570 | return err; |
| 571 | } |
| 572 | |
| 573 | if (readSnapshot.size() != 4) { |
| 574 | fprintf(stderr, "readSnapshot should be length 4 is %d\n", readSnapshot.size()); |
| 575 | return 1; |
| 576 | } |
| 577 | |
| 578 | bool matched = true; |
| 579 | for (size_t i=0; i<readSnapshot.size(); i++) { |
| 580 | const String8& name = readSnapshot.keyAt(i); |
| 581 | const FileState state = readSnapshot.valueAt(i); |
| 582 | |
| 583 | if (name != filenames[i] || states[i].modTime_sec != state.modTime_sec |
| 584 | || states[i].modTime_nsec != state.modTime_nsec |
| 585 | || states[i].size != state.size || states[i].crc32 != states[i].crc32) { |
| 586 | fprintf(stderr, "state %d expected={%d/%d, 0x%08x, 0x%08x, %3d} '%s'\n" |
| 587 | " actual={%d/%d, 0x%08x, 0x%08x, %3d} '%s'\n", i, |
| 588 | states[i].modTime_sec, states[i].modTime_nsec, states[i].size, states[i].crc32, |
| 589 | name.length(), filenames[i].string(), |
| 590 | state.modTime_sec, state.modTime_nsec, state.size, state.crc32, state.nameLen, |
| 591 | name.string()); |
| 592 | matched = false; |
| 593 | } |
| 594 | } |
| 595 | |
| 596 | return matched ? 0 : 1; |
| 597 | } |
| 598 | |
Joe Onorato | 4535e40 | 2009-05-15 09:07:06 -0400 | [diff] [blame] | 599 | // hexdump -v -e '" " 8/1 " 0x%02x," "\n"' data_writer.data |
| 600 | const unsigned char DATA_GOLDEN_FILE[] = { |
| 601 | 0x41, 0x70, 0x70, 0x31, 0x0b, 0x00, 0x00, 0x00, |
Joe Onorato | 2e1da32 | 2009-05-15 18:20:19 -0400 | [diff] [blame^] | 602 | 0xdd, 0xcc, 0xbb, 0xaa, 0x6e, 0x6f, 0x5f, 0x70, |
Joe Onorato | 4535e40 | 2009-05-15 09:07:06 -0400 | [diff] [blame] | 603 | 0x61, 0x64, 0x64, 0x69, 0x6e, 0x67, 0x5f, 0x00, |
Joe Onorato | 2e1da32 | 2009-05-15 18:20:19 -0400 | [diff] [blame^] | 604 | 0x44, 0x61, 0x74, 0x61, 0x0b, 0x00, 0x00, 0x00, |
| 605 | 0x0c, 0x00, 0x00, 0x00, 0x6e, 0x6f, 0x5f, 0x70, |
| 606 | 0x61, 0x64, 0x64, 0x69, 0x6e, 0x67, 0x5f, 0x00, |
| 607 | 0x6e, 0x6f, 0x5f, 0x70, 0x61, 0x64, 0x64, 0x69, |
| 608 | 0x6e, 0x67, 0x5f, 0x00, 0x41, 0x70, 0x70, 0x31, |
| 609 | 0x0c, 0x00, 0x00, 0x00, 0xdd, 0xcc, 0xbb, 0xaa, |
Joe Onorato | 4535e40 | 2009-05-15 09:07:06 -0400 | [diff] [blame] | 610 | 0x70, 0x61, 0x64, 0x64, 0x65, 0x64, 0x5f, 0x74, |
| 611 | 0x6f, 0x5f, 0x5f, 0x33, 0x00, 0xbc, 0xbc, 0xbc, |
| 612 | 0x44, 0x61, 0x74, 0x61, 0x0c, 0x00, 0x00, 0x00, |
| 613 | 0x0d, 0x00, 0x00, 0x00, 0x70, 0x61, 0x64, 0x64, |
| 614 | 0x65, 0x64, 0x5f, 0x74, 0x6f, 0x5f, 0x5f, 0x33, |
| 615 | 0x00, 0xbc, 0xbc, 0xbc, 0x70, 0x61, 0x64, 0x64, |
| 616 | 0x65, 0x64, 0x5f, 0x74, 0x6f, 0x5f, 0x5f, 0x33, |
| 617 | 0x00, 0xbc, 0xbc, 0xbc, 0x41, 0x70, 0x70, 0x31, |
Joe Onorato | 2e1da32 | 2009-05-15 18:20:19 -0400 | [diff] [blame^] | 618 | 0x0d, 0x00, 0x00, 0x00, 0xdd, 0xcc, 0xbb, 0xaa, |
| 619 | 0x70, 0x61, 0x64, 0x64, 0x65, 0x64, 0x5f, 0x74, |
| 620 | 0x6f, 0x5f, 0x32, 0x5f, 0x5f, 0x00, 0xbc, 0xbc, |
| 621 | 0x44, 0x61, 0x74, 0x61, 0x0d, 0x00, 0x00, 0x00, |
| 622 | 0x0e, 0x00, 0x00, 0x00, 0x70, 0x61, 0x64, 0x64, |
Joe Onorato | 4535e40 | 2009-05-15 09:07:06 -0400 | [diff] [blame] | 623 | 0x65, 0x64, 0x5f, 0x74, 0x6f, 0x5f, 0x32, 0x5f, |
Joe Onorato | 2e1da32 | 2009-05-15 18:20:19 -0400 | [diff] [blame^] | 624 | 0x5f, 0x00, 0xbc, 0xbc, 0x70, 0x61, 0x64, 0x64, |
| 625 | 0x65, 0x64, 0x5f, 0x74, 0x6f, 0x5f, 0x32, 0x5f, |
| 626 | 0x5f, 0x00, 0xbc, 0xbc, 0x41, 0x70, 0x70, 0x31, |
| 627 | 0x0a, 0x00, 0x00, 0x00, 0xdd, 0xcc, 0xbb, 0xaa, |
Joe Onorato | 4535e40 | 2009-05-15 09:07:06 -0400 | [diff] [blame] | 628 | 0x70, 0x61, 0x64, 0x64, 0x65, 0x64, 0x5f, 0x74, |
| 629 | 0x6f, 0x31, 0x00, 0xbc, 0x44, 0x61, 0x74, 0x61, |
| 630 | 0x0a, 0x00, 0x00, 0x00, 0x0b, 0x00, 0x00, 0x00, |
| 631 | 0x70, 0x61, 0x64, 0x64, 0x65, 0x64, 0x5f, 0x74, |
| 632 | 0x6f, 0x31, 0x00, 0xbc, 0x70, 0x61, 0x64, 0x64, |
| 633 | 0x65, 0x64, 0x5f, 0x74, 0x6f, 0x31, 0x00, 0xbc, |
| 634 | 0x46, 0x6f, 0x6f, 0x74, 0x04, 0x00, 0x00, 0x00, |
Joe Onorato | 2e1da32 | 2009-05-15 18:20:19 -0400 | [diff] [blame^] | 635 | 0x99, 0x99, 0x77, 0x77 |
Joe Onorato | 4535e40 | 2009-05-15 09:07:06 -0400 | [diff] [blame] | 636 | }; |
| 637 | const int DATA_GOLDEN_FILE_SIZE = sizeof(DATA_GOLDEN_FILE); |
| 638 | |
| 639 | static int |
| 640 | test_write_header_and_entity(BackupDataWriter& writer, const char* str) |
| 641 | { |
| 642 | int err; |
| 643 | String8 text(str); |
| 644 | |
Joe Onorato | 2e1da32 | 2009-05-15 18:20:19 -0400 | [diff] [blame^] | 645 | err = writer.WriteAppHeader(text, 0xaabbccdd); |
Joe Onorato | 4535e40 | 2009-05-15 09:07:06 -0400 | [diff] [blame] | 646 | if (err != 0) { |
| 647 | fprintf(stderr, "WriteAppHeader failed with %s\n", strerror(err)); |
| 648 | return err; |
| 649 | } |
| 650 | |
| 651 | err = writer.WriteEntityHeader(text, text.length()+1); |
| 652 | if (err != 0) { |
| 653 | fprintf(stderr, "WriteEntityHeader failed with %s\n", strerror(err)); |
| 654 | return err; |
| 655 | } |
| 656 | |
| 657 | err = writer.WriteEntityData(text.string(), text.length()+1); |
| 658 | if (err != 0) { |
| 659 | fprintf(stderr, "write failed for data '%s'\n", text.string()); |
| 660 | return errno; |
| 661 | } |
| 662 | |
| 663 | return err; |
| 664 | } |
| 665 | |
| 666 | int |
| 667 | backup_helper_test_data_writer() |
| 668 | { |
| 669 | int err; |
| 670 | int fd; |
| 671 | const char* filename = SCRATCH_DIR "data_writer.data"; |
| 672 | |
| 673 | system("rm -r " SCRATCH_DIR); |
| 674 | mkdir(SCRATCH_DIR, 0777); |
| 675 | mkdir(SCRATCH_DIR "data", 0777); |
| 676 | |
| 677 | fd = creat(filename, 0666); |
| 678 | if (fd == -1) { |
| 679 | fprintf(stderr, "error creating: %s\n", strerror(errno)); |
| 680 | return errno; |
| 681 | } |
| 682 | |
| 683 | BackupDataWriter writer(fd); |
| 684 | |
| 685 | err = 0; |
| 686 | err |= test_write_header_and_entity(writer, "no_padding_"); |
| 687 | err |= test_write_header_and_entity(writer, "padded_to__3"); |
| 688 | err |= test_write_header_and_entity(writer, "padded_to_2__"); |
| 689 | err |= test_write_header_and_entity(writer, "padded_to1"); |
| 690 | |
Joe Onorato | 2e1da32 | 2009-05-15 18:20:19 -0400 | [diff] [blame^] | 691 | writer.WriteAppFooter(0x77779999); |
Joe Onorato | 4535e40 | 2009-05-15 09:07:06 -0400 | [diff] [blame] | 692 | |
| 693 | close(fd); |
| 694 | |
| 695 | err = compare_file(filename, DATA_GOLDEN_FILE, DATA_GOLDEN_FILE_SIZE); |
| 696 | if (err != 0) { |
| 697 | return err; |
| 698 | } |
| 699 | |
| 700 | return err; |
| 701 | } |
| 702 | |
Joe Onorato | 2e1da32 | 2009-05-15 18:20:19 -0400 | [diff] [blame^] | 703 | int |
| 704 | test_read_header_and_entity(BackupDataReader& reader, const char* str) |
| 705 | { |
| 706 | int err; |
| 707 | int bufSize = strlen(str)+1; |
| 708 | char* buf = (char*)malloc(bufSize); |
| 709 | String8 string; |
| 710 | int cookie = 0x11111111; |
| 711 | size_t actualSize; |
| 712 | |
| 713 | // printf("\n\n---------- test_read_header_and_entity -- %s\n\n", str); |
| 714 | |
| 715 | err = reader.ReadNextHeader(); |
| 716 | if (err != 0) { |
| 717 | fprintf(stderr, "ReadNextHeader (for app header) failed with %s\n", strerror(err)); |
| 718 | goto done; |
| 719 | } |
| 720 | |
| 721 | err = reader.ReadAppHeader(&string, &cookie); |
| 722 | if (err != 0) { |
| 723 | fprintf(stderr, "ReadAppHeader failed with %s\n", strerror(err)); |
| 724 | goto done; |
| 725 | } |
| 726 | if (string != str) { |
| 727 | fprintf(stderr, "ReadAppHeader expected packageName '%s' got '%s'\n", str, string.string()); |
| 728 | err = EINVAL; |
| 729 | goto done; |
| 730 | } |
| 731 | if (cookie != (int)0xaabbccdd) { |
| 732 | fprintf(stderr, "ReadAppHeader expected cookie 0x%08x got 0x%08x\n", 0xaabbccdd, cookie); |
| 733 | err = EINVAL; |
| 734 | goto done; |
| 735 | } |
| 736 | |
| 737 | err = reader.ReadNextHeader(); |
| 738 | if (err != 0) { |
| 739 | fprintf(stderr, "ReadNextHeader (for entity header) failed with %s\n", strerror(err)); |
| 740 | goto done; |
| 741 | } |
| 742 | |
| 743 | err = reader.ReadEntityHeader(&string, &actualSize); |
| 744 | if (err != 0) { |
| 745 | fprintf(stderr, "ReadEntityHeader failed with %s\n", strerror(err)); |
| 746 | goto done; |
| 747 | } |
| 748 | if (string != str) { |
| 749 | fprintf(stderr, "ReadEntityHeader expected key '%s' got '%s'\n", str, string.string()); |
| 750 | err = EINVAL; |
| 751 | goto done; |
| 752 | } |
| 753 | if ((int)actualSize != bufSize) { |
| 754 | fprintf(stderr, "ReadEntityHeader expected dataSize 0x%08x got 0x%08x\n", bufSize, |
| 755 | actualSize); |
| 756 | err = EINVAL; |
| 757 | goto done; |
| 758 | } |
| 759 | |
| 760 | err = reader.ReadEntityData(buf, bufSize); |
| 761 | if (err != NO_ERROR) { |
| 762 | fprintf(stderr, "ReadEntityData failed with %s\n", strerror(err)); |
| 763 | goto done; |
| 764 | } |
| 765 | |
| 766 | if (0 != memcmp(buf, str, bufSize)) { |
| 767 | fprintf(stderr, "ReadEntityData expected '%s' but got something starting with " |
| 768 | "%02x %02x %02x %02x\n", str, buf[0], buf[1], buf[2], buf[3]); |
| 769 | err = EINVAL; |
| 770 | goto done; |
| 771 | } |
| 772 | |
| 773 | // The next read will confirm whether it got the right amount of data. |
| 774 | |
| 775 | done: |
| 776 | if (err != NO_ERROR) { |
| 777 | fprintf(stderr, "test_read_header_and_entity failed with %s\n", strerror(err)); |
| 778 | } |
| 779 | free(buf); |
| 780 | return err; |
| 781 | } |
| 782 | |
| 783 | int |
| 784 | backup_helper_test_data_reader() |
| 785 | { |
| 786 | int err; |
| 787 | int fd; |
| 788 | const char* filename = SCRATCH_DIR "data_reader.data"; |
| 789 | |
| 790 | system("rm -r " SCRATCH_DIR); |
| 791 | mkdir(SCRATCH_DIR, 0777); |
| 792 | mkdir(SCRATCH_DIR "data", 0777); |
| 793 | |
| 794 | fd = creat(filename, 0666); |
| 795 | if (fd == -1) { |
| 796 | fprintf(stderr, "error creating: %s\n", strerror(errno)); |
| 797 | return errno; |
| 798 | } |
| 799 | |
| 800 | err = write(fd, DATA_GOLDEN_FILE, DATA_GOLDEN_FILE_SIZE); |
| 801 | if (err != DATA_GOLDEN_FILE_SIZE) { |
| 802 | fprintf(stderr, "Error \"%s\" writing golden file %s\n", strerror(errno), filename); |
| 803 | return errno; |
| 804 | } |
| 805 | |
| 806 | close(fd); |
| 807 | |
| 808 | fd = open(filename, O_RDONLY); |
| 809 | if (fd == -1) { |
| 810 | fprintf(stderr, "Error \"%s\" opening golden file %s for read\n", strerror(errno), |
| 811 | filename); |
| 812 | return errno; |
| 813 | } |
| 814 | |
| 815 | { |
| 816 | BackupDataReader reader(fd); |
| 817 | |
| 818 | err = 0; |
| 819 | |
| 820 | if (err == NO_ERROR) { |
| 821 | err = test_read_header_and_entity(reader, "no_padding_"); |
| 822 | } |
| 823 | |
| 824 | if (err == NO_ERROR) { |
| 825 | err = test_read_header_and_entity(reader, "padded_to__3"); |
| 826 | } |
| 827 | |
| 828 | if (err == NO_ERROR) { |
| 829 | err = test_read_header_and_entity(reader, "padded_to_2__"); |
| 830 | } |
| 831 | |
| 832 | if (err == NO_ERROR) { |
| 833 | err = test_read_header_and_entity(reader, "padded_to1"); |
| 834 | } |
| 835 | |
| 836 | if (err == NO_ERROR) { |
| 837 | err = reader.ReadNextHeader(); |
| 838 | if (err != 0) { |
| 839 | fprintf(stderr, "ReadNextHeader (for app header) failed with %s\n", strerror(err)); |
| 840 | } |
| 841 | |
| 842 | if (err == NO_ERROR) { |
| 843 | int cookie; |
| 844 | err |= reader.ReadAppFooter(&cookie); |
| 845 | if (cookie != 0x77779999) { |
| 846 | fprintf(stderr, "app footer cookie expected=0x%08x actual=0x%08x\n", |
| 847 | 0x77779999, cookie); |
| 848 | err = EINVAL; |
| 849 | } |
| 850 | } |
| 851 | } |
| 852 | } |
| 853 | |
| 854 | close(fd); |
| 855 | |
| 856 | return err; |
| 857 | } |
| 858 | |
Joe Onorato | 3ad977b | 2009-05-05 11:50:51 -0700 | [diff] [blame] | 859 | static int |
| 860 | get_mod_time(const char* filename, struct timeval times[2]) |
| 861 | { |
| 862 | int err; |
| 863 | struct stat64 st; |
| 864 | err = stat64(filename, &st); |
| 865 | if (err != 0) { |
| 866 | fprintf(stderr, "stat '%s' failed: %s\n", filename, strerror(errno)); |
| 867 | return errno; |
| 868 | } |
| 869 | times[0].tv_sec = st.st_atime; |
| 870 | times[0].tv_usec = st.st_atime_nsec / 1000; |
| 871 | times[1].tv_sec = st.st_mtime; |
| 872 | times[1].tv_usec = st.st_mtime_nsec / 1000; |
| 873 | return 0; |
| 874 | } |
| 875 | |
| 876 | int |
| 877 | backup_helper_test_files() |
| 878 | { |
| 879 | int err; |
Joe Onorato | 3ad977b | 2009-05-05 11:50:51 -0700 | [diff] [blame] | 880 | int oldSnapshotFD; |
Joe Onorato | 4535e40 | 2009-05-15 09:07:06 -0400 | [diff] [blame] | 881 | int dataStreamFD; |
| 882 | int newSnapshotFD; |
Joe Onorato | 3ad977b | 2009-05-05 11:50:51 -0700 | [diff] [blame] | 883 | |
| 884 | system("rm -r " SCRATCH_DIR); |
| 885 | mkdir(SCRATCH_DIR, 0777); |
| 886 | mkdir(SCRATCH_DIR "data", 0777); |
| 887 | |
| 888 | write_text_file(SCRATCH_DIR "data/b", "b\nbb\n"); |
| 889 | write_text_file(SCRATCH_DIR "data/c", "c\ncc\n"); |
| 890 | write_text_file(SCRATCH_DIR "data/d", "d\ndd\n"); |
| 891 | write_text_file(SCRATCH_DIR "data/e", "e\nee\n"); |
| 892 | write_text_file(SCRATCH_DIR "data/f", "f\nff\n"); |
| 893 | write_text_file(SCRATCH_DIR "data/h", "h\nhh\n"); |
| 894 | |
| 895 | char const* files_before[] = { |
| 896 | "data/b", |
| 897 | "data/c", |
| 898 | "data/d", |
| 899 | "data/e", |
| 900 | "data/f" |
| 901 | }; |
| 902 | |
Joe Onorato | 4535e40 | 2009-05-15 09:07:06 -0400 | [diff] [blame] | 903 | dataStreamFD = creat(SCRATCH_DIR "1.data", 0666); |
| 904 | if (dataStreamFD == -1) { |
| 905 | fprintf(stderr, "error creating: %s\n", strerror(errno)); |
| 906 | return errno; |
| 907 | } |
| 908 | |
Joe Onorato | 3ad977b | 2009-05-05 11:50:51 -0700 | [diff] [blame] | 909 | newSnapshotFD = creat(SCRATCH_DIR "before.snap", 0666); |
| 910 | if (newSnapshotFD == -1) { |
| 911 | fprintf(stderr, "error creating: %s\n", strerror(errno)); |
| 912 | return errno; |
| 913 | } |
Joe Onorato | 4535e40 | 2009-05-15 09:07:06 -0400 | [diff] [blame] | 914 | |
| 915 | err = back_up_files(-1, dataStreamFD, newSnapshotFD, SCRATCH_DIR, files_before, 5); |
Joe Onorato | 3ad977b | 2009-05-05 11:50:51 -0700 | [diff] [blame] | 916 | if (err != 0) { |
| 917 | return err; |
| 918 | } |
| 919 | |
Joe Onorato | 4535e40 | 2009-05-15 09:07:06 -0400 | [diff] [blame] | 920 | close(dataStreamFD); |
Joe Onorato | 3ad977b | 2009-05-05 11:50:51 -0700 | [diff] [blame] | 921 | close(newSnapshotFD); |
| 922 | |
| 923 | sleep(3); |
| 924 | |
| 925 | struct timeval d_times[2]; |
| 926 | struct timeval e_times[2]; |
| 927 | |
| 928 | err = get_mod_time(SCRATCH_DIR "data/d", d_times); |
| 929 | err |= get_mod_time(SCRATCH_DIR "data/e", e_times); |
| 930 | if (err != 0) { |
| 931 | return err; |
| 932 | } |
| 933 | |
| 934 | write_text_file(SCRATCH_DIR "data/a", "a\naa\n"); |
| 935 | unlink(SCRATCH_DIR "data/c"); |
| 936 | write_text_file(SCRATCH_DIR "data/c", "c\ncc\n"); |
| 937 | write_text_file(SCRATCH_DIR "data/d", "dd\ndd\n"); |
| 938 | utimes(SCRATCH_DIR "data/d", d_times); |
| 939 | write_text_file(SCRATCH_DIR "data/e", "z\nzz\n"); |
| 940 | utimes(SCRATCH_DIR "data/e", e_times); |
| 941 | write_text_file(SCRATCH_DIR "data/g", "g\ngg\n"); |
| 942 | unlink(SCRATCH_DIR "data/f"); |
| 943 | |
| 944 | char const* files_after[] = { |
| 945 | "data/a", // added |
| 946 | "data/b", // same |
| 947 | "data/c", // different mod time |
| 948 | "data/d", // different size (same mod time) |
| 949 | "data/e", // different contents (same mod time, same size) |
| 950 | "data/g" // added |
| 951 | }; |
| 952 | |
| 953 | oldSnapshotFD = open(SCRATCH_DIR "before.snap", O_RDONLY); |
| 954 | if (oldSnapshotFD == -1) { |
| 955 | fprintf(stderr, "error opening: %s\n", strerror(errno)); |
| 956 | return errno; |
| 957 | } |
| 958 | |
Joe Onorato | 4535e40 | 2009-05-15 09:07:06 -0400 | [diff] [blame] | 959 | dataStreamFD = creat(SCRATCH_DIR "2.data", 0666); |
| 960 | if (dataStreamFD == -1) { |
| 961 | fprintf(stderr, "error creating: %s\n", strerror(errno)); |
| 962 | return errno; |
| 963 | } |
| 964 | |
Joe Onorato | 3ad977b | 2009-05-05 11:50:51 -0700 | [diff] [blame] | 965 | newSnapshotFD = creat(SCRATCH_DIR "after.snap", 0666); |
| 966 | if (newSnapshotFD == -1) { |
| 967 | fprintf(stderr, "error creating: %s\n", strerror(errno)); |
| 968 | return errno; |
| 969 | } |
| 970 | |
Joe Onorato | 4535e40 | 2009-05-15 09:07:06 -0400 | [diff] [blame] | 971 | err = back_up_files(oldSnapshotFD, dataStreamFD, newSnapshotFD, SCRATCH_DIR, files_after, 6); |
Joe Onorato | 3ad977b | 2009-05-05 11:50:51 -0700 | [diff] [blame] | 972 | if (err != 0) { |
| 973 | return err; |
| 974 | } |
| 975 | |
| 976 | close(oldSnapshotFD); |
Joe Onorato | 4535e40 | 2009-05-15 09:07:06 -0400 | [diff] [blame] | 977 | close(dataStreamFD); |
Joe Onorato | 3ad977b | 2009-05-05 11:50:51 -0700 | [diff] [blame] | 978 | close(newSnapshotFD); |
| 979 | |
| 980 | return 0; |
| 981 | } |
| 982 | |
| 983 | #endif // TEST_BACKUP_HELPERS |
Joe Onorato | 4535e40 | 2009-05-15 09:07:06 -0400 | [diff] [blame] | 984 | |
| 985 | } |