message for user when flash memory storage full, how could I detect this error 

by YAFFS service ? Is it suitable to check yaffs_freespace("mount_path") before 

yaffs_write such as:

fwrite(int fd, u8* buf, int size) 

{

    if( size>yaffs_freespace("mount_path"))

       SetMemFullErr( );

   

yaffs_write(fd, (const void*)buf, size);

}

Best Regards,

Ski Tseng