diff options
Diffstat (limited to 'Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/internal.c')
| -rw-r--r-- | Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/internal.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/internal.c b/Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/internal.c index e881e0c7b..b28a59e43 100644 --- a/Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/internal.c +++ b/Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/internal.c @@ -364,6 +364,7 @@ static bool ethash_mmap(struct ethash_full* ret, FILE* f) { int fd; char* mmapped_data; + errno = 0; ret->file = f; if ((fd = ethash_fileno(ret->file)) == -1) { return false; @@ -400,38 +401,48 @@ ethash_full_t ethash_full_new_internal( ret->file_size = (size_t)full_size; switch (ethash_io_prepare(dirname, seed_hash, &f, (size_t)full_size, false)) { case ETHASH_IO_FAIL: + // ethash_io_prepare will do all ETHASH_CRITICAL() logging in fail case goto fail_free_full; case ETHASH_IO_MEMO_MATCH: if (!ethash_mmap(ret, f)) { + ETHASH_CRITICAL("mmap failure()"); goto fail_close_file; } return ret; case ETHASH_IO_MEMO_SIZE_MISMATCH: // if a DAG of same filename but unexpected size is found, silently force new file creation if (ethash_io_prepare(dirname, seed_hash, &f, (size_t)full_size, true) != ETHASH_IO_MEMO_MISMATCH) { + ETHASH_CRITICAL("Could not recreate DAG file after finding existing DAG with unexpected size."); goto fail_free_full; } // fallthrough to the mismatch case here, DO NOT go through match case ETHASH_IO_MEMO_MISMATCH: if (!ethash_mmap(ret, f)) { + ETHASH_CRITICAL("mmap failure()"); goto fail_close_file; } break; } if (!ethash_compute_full_data(ret->data, full_size, light, callback)) { + ETHASH_CRITICAL("Failure at computing DAG data."); goto fail_free_full_data; } // after the DAG has been filled then we finalize it by writting the magic number at the beginning if (fseek(f, 0, SEEK_SET) != 0) { + ETHASH_CRITICAL("Could not seek to DAG file start to write magic number."); goto fail_free_full_data; } uint64_t const magic_num = ETHASH_DAG_MAGIC_NUM; if (fwrite(&magic_num, ETHASH_DAG_MAGIC_NUM_SIZE, 1, f) != 1) { + ETHASH_CRITICAL("Could not write magic number to DAG's beginning."); + goto fail_free_full_data; + } + if (fflush(f) != 0) {// make sure the magic number IS there + ETHASH_CRITICAL("Could not flush memory mapped data to DAG file. Insufficient space?"); goto fail_free_full_data; } - fflush(f); // make sure the magic number IS there return ret; fail_free_full_data: |