man/man9e/print.9e

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 print 9E "15 Sep 1992" "SunOS 5.11" "Driver Entry Points"
 NAME
print - display a driver message on system console
 SYNOPSIS

#include <sys/types.h>
#include <sys/errno.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>


int prefixprint(dev_t dev, char *str);


 INTERFACE LEVEL

Architecture independent level 1 (DDI/DKI). This entry point is required for
block devices.
 PARAMETERS

dev

Device number.


str

Pointer to a character string describing the problem.


 DESCRIPTION

The print() routine is called by the kernel when it has detected an
exceptional condition (such as out of space) in the device. To display the
message on the console, the driver should use the cmn_err(9F) kernel
function. The driver should print the message along with any driver specific
information.
 RETURN VALUES

The print() routine should return 0 for success, or the
appropriate error number. The print routine can fail if the driver
implemented a non-standard print() routine that attempted to perform
error logging, but was unable to complete the logging for whatever reason.
 SEE ALSO

cmn_err(9F)

Writing Device Drivers