intro(2) — sys5 — Apollo Domain/IX SR9.5



INTRO(2)                 DOMAIN/IX SYS5                  INTRO(2)



NAME
     intro - introduction to system calls and error numbers

USAGE
     #include <errno.h>

DESCRIPTION
     This section describes all of the system calls.  Most of
     these calls have one or more error returns.  An error condi-
     tion is indicated by an otherwise impossible returned value.
     This is almost always -1; the individual descriptions
     specify the details.  An error number is also made available
     in the external variable errno.  Errno is not cleared on
     successful calls, so it should be tested only after an error
     has been indicated.

     Each system call description attempts to list all possible
     error numbers.  The following is a complete list of the
     error numbers and their names as defined in <errno.h>.































Printed 12/4/86                                           INTRO-1
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