ReturnStatus
FileMetaDAO::isdir(const std::string &path)
{
Channel* pDataChannel = ChannelManager::getInstance()->Mapping(m_BucketId);
NameSpace *DataNS = pDataChannel->m_DataNS;
int rt = 0;
FileAttr st;
rt = DataNS->Stat(path.c_str(), &st);
if (0 == rt) {
if (MU_DIRECTORY == st.m_Type) {
return ReturnStatus(MU_SUCCESS);
} else {
ERROR_LOG("path %s, not directory", path.c_str());
return ReturnStatus(MU_FAILED, NOT_DIRECTORY);
}
}
int error = errno;
ERROR_LOG("path %s, stat() error, %s", path.c_str(), strerror(error));
if (ENOENT == error || ENOTDIR == error) {
return checkPrefix(path);
} else {
return ReturnStatus(MU_FAILED, MU_UNKNOWN_ERROR);
}
}
ReturnStatus
FileMetaDAO::checkPrefix(const std::string &path)
{
Channel* pDataChannel = ChannelManager::getInstance()->Mapping(m_BucketId);
NameSpace *DataNS = pDataChannel->m_DataNS;
int rt = 0;
FileAttr st;
rt = DataNS->Stat(prefix(path).c_str(), &st);
if (0 == rt) {
if (st.m_Type == MU_DIRECTORY) {//如果path是个存在的目录
// prefix path is existed and refers to a directory
return ReturnStatus(MU_FAILED, PATH_NOT_EXIST);
} else {//如果path是个存在的文件
return ReturnStatus(MU_FAILED, PATH_INVALID);
}
} else {
if (errno == ENOENT || errno == ENOTDIR) {//如果这个路径不存在
return ReturnStatus(MU_FAILED, PATH_INVALID);
} else {//
return ReturnStatus(MU_FAILED, MU_UNKNOWN_ERROR);
}
}
}
ReturnStatus
FileMetaDAO::statDir(const std::string &path, FileMeta *pMeta)
{
assert(pMeta);
Channel* pDataChannel = ChannelManager::getInstance()->Mapping(m_BucketId);
NameSpace *DataNS = pDataChannel->m_DataNS;
int rt = 0;
int error = 0;
FileAttr st;
rt = DataNS->Stat(path.c_str(), &st);
if (-1 == rt) {
error = errno;
ERROR_LOG("path %s, stat() error, %s.", path.c_str(), strerror(error));
if (ENOENT == error || ENOTDIR == error) {
return checkPrefix(path);
} else {
return ReturnStatus(MU_FAILED, MU_UNKNOWN_ERROR);
}
}
if (st.m_Type != MU_DIRECTORY) {
ERROR_LOG("path %s, not directory", path.c_str());
return ReturnStatus(MU_FAILED, NOT_DIRECTORY);
}
pMeta->m_Attr.m_Mode = st.m_Mode;
pMeta->m_Attr.m_CTime = st.m_CTime;
pMeta->m_Attr.m_MTime = st.m_MTime;
pMeta->m_Attr.m_Size = st.m_Size;
return ReturnStatus(MU_SUCCESS);
}