DLPI_FD(3DLPI) Data Link Provider Interface Library Functions
NAME
dlpi_fd - get DLPI file descriptor
SYNOPSIS
cc [
flag ... ]
file ...
-ldlpi [
library ... ]
#include <libdlpi.h>
int dlpi_fd(
dlpi_handle_t dh);
DESCRIPTION
The
dlpi_fd() function returns the integer file descriptor that can
be used to directly operate on the open
DLPI stream associated with
the
DLPI handle
dh. This file descriptor can be used to perform
non-
DLPI operations that do not alter the state of the
DLPI stream,
such as waiting for an event using
poll(2), or pushing and
configuring additional
STREAMS modules, such as
pfmod(4M). If
DLPI operations are directly performed on the file descriptor, or a
STREAMS module is pushed that alters the message-passing interface
such that
DLPI operations can no longer be issued, future operations
on
dh might not behave as documented.
The returned file descriptor is managed by
libdlpi(3LIB) and the
descriptor must not be closed.
RETURN VALUES
The function returns the integer file descriptor associated with the
DLPI handle
dh. If
dh is invalid,
-1 is returned.
ATTRIBUTES
See
attributes(7) for description of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | Committed |
+--------------------+-----------------+
|MT-Level | Safe |
+--------------------+-----------------+
SEE ALSO
poll(2),
libdlpi(3LIB),
pfmod(4M),
dlpi(4P),
attributes(7) June 15, 2007 DLPI_FD(3DLPI)
