root
82 lines
3.3 KiB
Plaintext
Executable File
82 lines
3.3 KiB
Plaintext
Executable File
.\"############################################################################
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.\" $Id: genders_getnodename.3,v 1.11 2010-02-02 00:04:34 chu11 Exp $
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.\"############################################################################
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.\" Copyright (C) 2007-2019 Lawrence Livermore National Security, LLC.
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.\" Copyright (C) 2001-2007 The Regents of the University of California.
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.\" Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
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.\" Written by Jim Garlick <garlick@llnl.gov> and Albert Chu <chu11@llnl.gov>.
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.\" UCRL-CODE-2003-004.
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.\"
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.\" This file is part of Genders, a cluster configuration database.
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.\" For details, see <http://www.llnl.gov/linux/genders/>.
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.\"
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.\" Genders is free software; you can redistribute it and/or modify it under
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.\" the terms of the GNU General Public License as published by the Free
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.\" Software Foundation; either version 2 of the License, or (at your option)
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.\" any later version.
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.\"
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.\" Genders is distributed in the hope that it will be useful, but WITHOUT ANY
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.\" WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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.\" FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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.\" details.
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.\"
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.\" You should have received a copy of the GNU General Public License along
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.\" with Genders. If not, see <http://www.gnu.org/licenses/>.
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.\"############################################################################
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.TH GENDERS_GETNODENAME 3 "August 2003" "LLNL" "LIBGENDERS"
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.SH NAME
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genders_getnodename \- get the current node name
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.SH SYNOPSIS
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.B #include <genders.h>
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.sp
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.BI "int genders_getnodename(genders_t handle, char *node, int len);"
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.br
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.SH DESCRIPTION
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\fBgenders_getnodename()\fR retrieves the name of the node that the
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function is being called from. The node name returned is the
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shortened hostname of the node and is stored in the buffer pointed to
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be \fInode\fR. \fIlen\fR should indicate the length of the buffer.
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The node returned by \fBgenders_getnodename()\fR is the shortened
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hostname of the node.
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To avoid passing in a buffer that is not large enough to store the
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node name,
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.BR genders_getmaxnodelen (3)
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should be used to determine the minimum buffer size that should be used.
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.br
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.SH RETURN VALUES
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On success, 0 is returned. On error, -1 is returned, and an error
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code is returned in \fIhandle\fR. The error code can be retrieved via
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.BR genders_errnum (3)
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, and a description of the error code can be retrieved via
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.BR genders_strerror (3).
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Error codes are defined in genders.h.
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.br
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.SH ERRORS
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.TP
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.B GENDERS_ERR_NULLHANDLE
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The \fIhandle\fR parameter is NULL. The genders handle must be created
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with
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.BR genders_handle_create (3).
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.TP
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.B GENDERS_ERR_NOTLOADED
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.BR genders_load_data (3)
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has not been called to load genders data.
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.TP
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.B GENDERS_ERR_OVERFLOW
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The buffer pointed to by \fInode\fR is not large enough to store the node name.
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.TP
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.B GENDERS_ERR_PARAMETERS
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An incorrect parameter has been passed in.
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.TP
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.B GENDERS_ERR_MAGIC
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\fIhandle\fR has an incorrect magic number. \fIhandle\fR does not
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point to a genders handle or \fIhandle\fR has been destroyed by
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.BR genders_handle_destroy (3).
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.br
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.SH FILES
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/usr/include/genders.h
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.SH SEE ALSO
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libgenders(3), genders_handle_create(3), genders_load_data(3),
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genders_getmaxnodelen(3), genders_errnum(3), genders_strerror(3)
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