NAME

uderror, ud_errmsg − user-level device driver error messages

SYNOPSIS

void uderror (error, s)
int error;
char ∗s;

extern char ∗ud_errmsg[ ];

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 ud_errmsg 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). 

CX/UX Programmer’s Reference Manual