geterror(D3)

NAME
     geterror - retrieve error number from a buffer header

SYNOPSIS
     #include <sys/buf.h>
     #include <sys/ddi.h>
     int geterror(struct buf_t *bp);

   Arguments
     bp        Pointer to the buffer header.

DESCRIPTION
     geterror is called to retrieve the error number from the error field of a
     buffer header (buf(D4) structure).

   Return Values
     An error number indicating the error condition of the I/O request is
     returned.  If the I/O request completed successfully, 0 is returned.

USAGE
   Level
     Base or Interrupt.

   Synchronization Constraints
     Does not sleep.

     Driver-defined basic locks, read/write locks, and sleep locks may be held
     across calls to this function.

REFERENCES
     buf(D4), errnos(D5)