intro(2)intro(2)NAMEintro - introduction to system calls
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 avail‐
able in the external variable (see errno(2)). Note: is not cleared on
successful calls. Therefore, it should be tested only after an error
has been indicated.
SEE ALSOintro(3), errno(2), hier(5), introduction(9).
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