What are some System calls for secondary storage management?

System calls for secondary storage management include operations such as open, read, write, and close, which manage file access. Additionally, system calls like lseek for positioning within files and unlink for deleting files are important for handling secondary storage. Other calls may include mkdir and rmdir for directory management, as well as stat and fstat for retrieving file metadata. These calls facilitate interaction with the file system and the underlying storage devices.