------------------------------------ * pg_file_rename_internal - Workhorse for pg_file_rename functions. * * This handles the actual work for pg_file_rename. */
| 306 | * This handles the actual work for pg_file_rename. |
| 307 | */ |
| 308 | static bool |
| 309 | pg_file_rename_internal(text *file1, text *file2, text *file3) |
| 310 | { |
| 311 | char *fn1, |
| 312 | *fn2, |
| 313 | *fn3; |
| 314 | int rc; |
| 315 | |
| 316 | fn1 = convert_and_check_filename(file1); |
| 317 | fn2 = convert_and_check_filename(file2); |
| 318 | |
| 319 | if (file3 == NULL) |
| 320 | fn3 = NULL; |
| 321 | else |
| 322 | fn3 = convert_and_check_filename(file3); |
| 323 | |
| 324 | if (access(fn1, W_OK) < 0) |
| 325 | { |
| 326 | ereport(WARNING, |
| 327 | (errcode_for_file_access(), |
| 328 | errmsg("file \"%s\" is not accessible: %m", fn1))); |
| 329 | |
| 330 | return false; |
| 331 | } |
| 332 | |
| 333 | if (fn3 && access(fn2, W_OK) < 0) |
| 334 | { |
| 335 | ereport(WARNING, |
| 336 | (errcode_for_file_access(), |
| 337 | errmsg("file \"%s\" is not accessible: %m", fn2))); |
| 338 | |
| 339 | return false; |
| 340 | } |
| 341 | |
| 342 | rc = access(fn3 ? fn3 : fn2, W_OK); |
| 343 | if (rc >= 0 || errno != ENOENT) |
| 344 | { |
| 345 | ereport(ERROR, |
| 346 | (errcode(ERRCODE_DUPLICATE_FILE), |
| 347 | errmsg("cannot rename to target file \"%s\"", |
| 348 | fn3 ? fn3 : fn2))); |
| 349 | } |
| 350 | |
| 351 | if (fn3) |
| 352 | { |
| 353 | if (rename(fn2, fn3) != 0) |
| 354 | { |
| 355 | ereport(ERROR, |
| 356 | (errcode_for_file_access(), |
| 357 | errmsg("could not rename \"%s\" to \"%s\": %m", |
| 358 | fn2, fn3))); |
| 359 | } |
| 360 | if (rename(fn1, fn2) != 0) |
| 361 | { |
| 362 | ereport(WARNING, |
| 363 | (errcode_for_file_access(), |
| 364 | errmsg("could not rename \"%s\" to \"%s\": %m", |
| 365 | fn1, fn2))); |
no test coverage detected