File Structure Related System Calls

File Structure Related System Calls
(Cont’d)

􀁺 To a process then, all input and output
operations are synchronous and unbuffered.
􀁺 All input and output operations start by
opening a file using either the "creat()" or
"open()" system calls.
􀁺 These calls return a file descriptor that identifies
the I/O channel.