HP-UX Reference (11i v3 07/02) - 2 System Calls (vol 5)

intro(2) intro(2)
NAME
intro - introduction to system calls
DESCRIPTION
This section describes all of the system calls. All of these calls return a function result. This result indi-
cates the status of the call. Typically, a zero or positive result indicates that the call completed successfully,
and −1 indicates an error. The individual descriptions specify the details. An error number is also made
available in the external variable errno (see errno(2)). Note:
errno is not cleared on successful calls.
Therefore, it should be tested only after an error has been indicated.
SEE ALSO
errno(2), intro(3C), hier(5), introduction(9).
The HP Technical Documentation website at:
http://docs.hp.com
.
HP-UX 11i Version 3: February 2007 − 1 − Hewlett-Packard Company 23