'\" te
.\" Copyright (c) 2008, Sun Microsystems, Inc.  All Rights Reserved.
.\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License").  You may not use this file except in compliance with the License.
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.TH DI_DEVLINK_PATH 3DEVINFO "May 15, 2008"
.SH NAME
di_devlink_path, di_devlink_content, di_devlink_type \- get devlink attributes
.SH SYNOPSIS
.LP
.nf
\fBcc\fR [ \fIflag\fR... ] \fIfile\fR... \fB-ldevinfo\fR [ \fIlibrary\fR... ]
#include <libdevinfo.h>

\fBconst char *\fR\fBdi_devlink_path\fR(\fBdi_devlink_t\fR \fIdevlink\fR);
.fi

.LP
.nf
\fBconst char *\fR\fBdi_devlink_content\fR(\fBdi_devlink_t\fR \fIdevlink\fR);
.fi

.LP
.nf
\fBint\fR \fBdi_devlink_type\fR(\fBdi_devlink_t\fR \fIdevlink\fR);
.fi

.SH PARAMETERS
.sp
.ne 2
.na
\fB\fIdevlink\fR\fR
.ad
.RS 11n
An opaque handle to a devlink.
.RE

.SH DESCRIPTION
.sp
.LP
These functions return various attributes of a devlink.
.SH RETURN VALUES
.sp
.LP
The \fBdi_devlink_path()\fR function returns the absolute path of a devlink. On
error, \fINULL\fR is returned and \fBerrno\fR is set to indicate the error.
.sp
.LP
The \fBdi_devlink_content()\fR function returns the content of the symbolic
link represented by \fIdevlink\fR. On error, \fINULL\fR is returned and
\fBerrno\fR is set to indicate the error.
.sp
.LP
The \fBdi_devlink_type()\fR function returns the devlink type, either
\fBDI_PRIMARY_LINK\fR or \fBDI_SECONDARY_LINK\fR. On error, -1 is returned and
\fBerrno\fR is set to indicate the error.
.SH ERRORS
.sp
.LP
These functions will fail if:
.sp
.ne 2
.na
\fB\fBEINVAL\fR\fR
.ad
.RS 10n
The \fIdevlink\fR argument is invalid.
.RE

.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(7)  for descriptions of the following attributes:
.sp

.sp
.TS
box;
c | c
l | l .
ATTRIBUTE TYPE	ATTRIBUTE VALUE
_
Interface Stability	Committed
_
MT-Level	Safe
.TE

.SH SEE ALSO
.sp
.LP
.BR malloc (3C),
.BR di_devlink_init (3DEVINFO),
.BR di_devlink_walk (3DEVINFO),
.BR libdevinfo (3LIB),
.BR attributes (7)