文件操作类

文件操作类接口支持如下，接口定义符合GM/T 0018-2012标准，接口参数与返回值可参考标准文档。

int SDF_CreateFile(void *hSessionHandle, unsigned char *pucFileName, unsigned int uiNameLen, unsigned int uiFileSize);
int SDF_ReadFile(void *hSessionHandle, unsigned char *pucFileName, unsigned int uiNameLen, unsigned int uiOffset, unsigned int *puiFileLength, unsigned char *pucBuffer);
int SDF_WriteFile(void *hSessionHandle, unsigned char *pucFileName, unsigned int uiNameLen, unsigned int uiOffset, unsigned int uiFileLength, unsigned char *pucBuffer);
int SDF_DeleteFile(void *hSessionHandle, unsigned char *pucFileName, unsigned int uiNameLen);