Advanced Programming in the UNIX Environment: Second Edition [Electronic resources]

3.17. Summary

This chapter has described the basic I/O functions provided by the UNIX System. These are often called the unbuffered I/O functions because each read or write invokes a system call into the kernel. Using only read and write, we looked at the effect of various I/O sizes on the amount of time required to read a file. We also looked at several ways to flush written data to disk and their effect on application performance.

Chapter 14, where we'll use ioctl with the STREAMS I/O system, and fcntl for record locking.