intro(2)

DESCRIPTION

This section describes all of the system calls. All of these calls return a function result. This result indicates 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

intro(3), errno(2), hier(5), introduction(9).

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