uderror(3X)                                           uderror(3X)



NAME
     uderror, uderrmsg - user-level device driver error messages

SYNOPSIS
     void uderror (error, s)
     int error;
     char *s;

     extern char *uderrmsg[ ];

     extern int udmaxerr;

DESCRIPTION
     uderror produces a message on the standard error output,
     describing the generic user-level device driver error code
     provided as an argument.  This error code is returned from a
     call to a user-level device driver service.  The argument
     string s is printed first, then a colon and a blank, then
     the message and a new-line.  To be of most use, the argument
     string should include the name of the program that incurred
     the error.

     To simplify variant formatting of messages, the array of
     message strings uderrmsg is provided; a user-level device
     driver error code can be used as an index in this table to
     get the message string without the new-line.  Udmaxerr is
     the largest message number provided for in the table; it
     should be checked because new error codes may be added to
     the system before they are added to the table.

SEE ALSO
     intro(2).























Page 1                        CX/UX Programmer's Reference Manual