* Parse the intent log, and call parse_func for each valid record within. */
| 339 | * Parse the intent log, and call parse_func for each valid record within. |
| 340 | */ |
| 341 | int |
| 342 | zil_parse(zilog_t *zilog, zil_parse_blk_func_t *parse_blk_func, |
| 343 | zil_parse_lr_func_t *parse_lr_func, void *arg, uint64_t txg, |
| 344 | boolean_t decrypt) |
| 345 | { |
| 346 | const zil_header_t *zh = zilog->zl_header; |
| 347 | boolean_t claimed = !!zh->zh_claim_txg; |
| 348 | uint64_t claim_blk_seq = claimed ? zh->zh_claim_blk_seq : UINT64_MAX; |
| 349 | uint64_t claim_lr_seq = claimed ? zh->zh_claim_lr_seq : UINT64_MAX; |
| 350 | uint64_t max_blk_seq = 0; |
| 351 | uint64_t max_lr_seq = 0; |
| 352 | uint64_t blk_count = 0; |
| 353 | uint64_t lr_count = 0; |
| 354 | blkptr_t blk, next_blk; |
| 355 | char *lrbuf, *lrp; |
| 356 | int error = 0; |
| 357 | |
| 358 | bzero(&next_blk, sizeof (blkptr_t)); |
| 359 | |
| 360 | /* |
| 361 | * Old logs didn't record the maximum zh_claim_lr_seq. |
| 362 | */ |
| 363 | if (!(zh->zh_flags & ZIL_CLAIM_LR_SEQ_VALID)) |
| 364 | claim_lr_seq = UINT64_MAX; |
| 365 | |
| 366 | /* |
| 367 | * Starting at the block pointed to by zh_log we read the log chain. |
| 368 | * For each block in the chain we strongly check that block to |
| 369 | * ensure its validity. We stop when an invalid block is found. |
| 370 | * For each block pointer in the chain we call parse_blk_func(). |
| 371 | * For each record in each valid block we call parse_lr_func(). |
| 372 | * If the log has been claimed, stop if we encounter a sequence |
| 373 | * number greater than the highest claimed sequence number. |
| 374 | */ |
| 375 | lrbuf = zio_buf_alloc(SPA_OLD_MAXBLOCKSIZE); |
| 376 | zil_bp_tree_init(zilog); |
| 377 | |
| 378 | for (blk = zh->zh_log; !BP_IS_HOLE(&blk); blk = next_blk) { |
| 379 | uint64_t blk_seq = blk.blk_cksum.zc_word[ZIL_ZC_SEQ]; |
| 380 | int reclen; |
| 381 | char *end = NULL; |
| 382 | |
| 383 | if (blk_seq > claim_blk_seq) |
| 384 | break; |
| 385 | |
| 386 | error = parse_blk_func(zilog, &blk, arg, txg); |
| 387 | if (error != 0) |
| 388 | break; |
| 389 | ASSERT3U(max_blk_seq, <, blk_seq); |
| 390 | max_blk_seq = blk_seq; |
| 391 | blk_count++; |
| 392 | |
| 393 | if (max_lr_seq == claim_lr_seq && max_blk_seq == claim_blk_seq) |
| 394 | break; |
| 395 | |
| 396 | error = zil_read_log_block(zilog, decrypt, &blk, &next_blk, |
| 397 | lrbuf, &end); |
| 398 | if (error != 0) |
no test coverage detected