block_id_counter FileManagerPosix::getMaxUsedBlockCounter(const block_id_domain block_domain) const {
const string block_domain_str(ToZeroPaddedString(block_domain, kBlockIdDomainLengthInDigits));
string glob_pattern(storage_path_);
glob_pattern.append("qsblk_");
glob_pattern.append(block_domain_str);
glob_pattern.append("_*.qsb");
glob_t glob_result;
glob(glob_pattern.c_str(), 0, nullptr, &glob_result);
string filename_pattern(storage_path_);
filename_pattern.append("qsblk_");
filename_pattern.append(block_domain_str);
filename_pattern.append("_%");
filename_pattern.append(SCNu64);
filename_pattern.append(".qsb");
block_id_counter counter_max = 0, counter;
if (glob_result.gl_pathc > 0
&& sscanf(glob_result.gl_pathv[glob_result.gl_pathc - 1], filename_pattern.c_str(), &counter) == 1
&& counter > counter_max) {
counter_max = counter;
}
globfree(&glob_result);
return counter_max;
}
block_id_counter FileManagerWindows::getMaxUsedBlockCounter(const block_id_domain block_domain) const {
const string block_domain_str(ToZeroPaddedString(block_domain, kBlockIdDomainLengthInDigits));
string glob_pattern(storage_path_);
glob_pattern.append("qsblk_");
glob_pattern.append(block_domain_str);
glob_pattern.append("_*.qsb");
WIN32_FIND_DATA find_data;
HANDLE find_handle = INVALID_HANDLE_VALUE;
DWORD error_code = 0;
find_handle = FindFirstFile(glob_pattern.c_str(), &find_data);
if (find_handle == INVALID_HANDLE_VALUE) {
error_code = GetLastError();
if (error_code != ERROR_FILE_NOT_FOUND) {
LOG(ERROR) << "Failed to retrieve blockfiles with error_code: " << error_code;
}
return 0;
}
string filename_pattern("qsblk_");
filename_pattern.append(block_domain_str);
filename_pattern.append("_%");
filename_pattern.append(SCNu64);
filename_pattern.append(".qsb");
block_id_counter counter_max = 0, counter;
do {
if (sscanf(find_data.cFileName, filename_pattern.c_str(), &counter) == 1 &&
counter > counter_max) {
counter_max = counter;
}
} while (FindNextFile(find_handle, &find_data) != 0);
error_code = GetLastError();
if (error_code != ERROR_NO_MORE_FILES) {
LOG(ERROR) << "Failed to FindNextFile with error_code: " << error_code;
}
if (FindClose(find_handle) == 0) {
LOG(ERROR) << "Failed to close the file with error_code: " << GetLastError();
}
return counter_max;
}
