| 1 | /* |
| 2 | * Copyright (c) Yann Collet, Meta Platforms, Inc. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * This source code is licensed under both the BSD-style license (found in the |
| 6 | * LICENSE file in the root directory of this source tree) and the GPLv2 (found |
| 7 | * in the COPYING file in the root directory of this source tree). |
| 8 | * You may select, at your option, one of the above-listed licenses. |
| 9 | */ |
| 10 | |
| 11 | #include "fuzz_third_party_seq_prod.h" |
| 12 | |
| 13 | #include <assert.h> |
| 14 | #include <stdlib.h> |
| 15 | #include <string.h> |
| 16 | |
| 17 | _Thread_local size_t threadLocalState; |
| 18 | |
| 19 | size_t FUZZ_seqProdSetup(void) { |
| 20 | threadLocalState = 0; |
| 21 | return 0; |
| 22 | } |
| 23 | |
| 24 | size_t FUZZ_seqProdTearDown(void) { |
| 25 | return 0; |
| 26 | } |
| 27 | |
| 28 | void* FUZZ_createSeqProdState(void) { |
| 29 | return calloc(1, sizeof(size_t)); |
| 30 | } |
| 31 | |
| 32 | size_t FUZZ_freeSeqProdState(void* state) { |
| 33 | free(state); |
| 34 | return 0; |
| 35 | } |
| 36 | |
| 37 | size_t FUZZ_thirdPartySeqProd( |
| 38 | void* sequenceProducerState, |
| 39 | ZSTD_Sequence* outSeqs, size_t outSeqsCapacity, |
| 40 | const void* src, size_t srcSize, |
| 41 | const void* dict, size_t dictSize, |
| 42 | int compressionLevel, |
| 43 | size_t windowSize |
| 44 | ) { |
| 45 | /* Try to catch unsafe use of the shared state */ |
| 46 | size_t* const sharedStatePtr = (size_t*)sequenceProducerState; |
| 47 | assert(*sharedStatePtr == threadLocalState); |
| 48 | (*sharedStatePtr)++; threadLocalState++; |
| 49 | |
| 50 | /* Check that fallback is enabled when FUZZ_THIRD_PARTY_SEQ_PROD is defined */ |
| 51 | return ZSTD_SEQUENCE_PRODUCER_ERROR; |
| 52 | } |