Entry Point print()

Entry Point print()

The pfxprint() entry point is called from the kernel to display a diagnostic message when an error is detected on a block device. The prototype and the complete logic of the entry point is shown in Example 8-5.

Example 8-5 : Entry Point pfxprint()

#include <sys/cmn_err.h>
#include <sys/ddi.h>
int hypo_print(dev_t dev, char *str)
{
   cmn_err(CE_NOTE,"Error on dev %d: %s\n",geteminor(dev),str);
   return 0;
}