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.\" @(#)$RCSfile: Cns_getcwd.man,v $ $Revision: 1.1.1.1 $ $Date: 2001/10/04 12:12:44 $ CERN IT-PDP/DM Jean-Philippe Baud
.\" Copyright (C) 2001 by CERN/IT/PDP/DM
.\" All rights reserved
.\"
.TH CNS_GETCWD 3 "$Date: 2001/10/04 12:12:44 $" CASTOR "Cns Library Functions"
.SH NAME
Cns_getcwd \- get CASTOR current directory used by the name server
.SH SYNOPSIS
.B #include <sys/types.h>
.br
\fB#include "Cns_api.h"\fR
.sp
.BI "char *Cns_getcwd (char *" buf ,
.BI "int " size )
.SH DESCRIPTION
.B Cns_getcwd
gets the CASTOR current directory used by the name server.
This current working directory is stored in a thread-safe variable in the client.
.LP
If
.I buf
is not NULL, the current directory name will be stored there.
.br
If
.I buf
is NULL,
.B Cns_getcwd
allocates a buffer of
.I size
bytes using
.BR malloc .
.LP
.I size
must be at least the length of the directory name to be returned plus one byte.
.SH RETURN VALUE
This routine returns
.I buf
if the operation was successful or NULL if the operation failed.
In the latter case,
.B serrno
is set appropriately.
.SH ERRORS
.TP 1.3i
.B ENOENT
The current directory has not been set yet or does not exist anymore.
.TP
.B ENOMEM
.I buf
is a NULL pointer and memory could not be allocated.
.TP
.B EINVAL
.I size
is less than or equal to zero.
.TP
.B ERANGE
.I size
is greater than 0 and less than size of current directory name plus 1.
.TP
.B SENOSHOST
Host unknown.
.TP
.B SENOSSERV
Service unknown.
.TP
.B SECOMERR
Communication error.
.TP
.B ENSNACT
Name server is not running or is being shutdown.
.SH SEE ALSO
.BR Cns_chdir(3)
.SH AUTHOR
\fBCASTOR\fP Team <castor.support@cern.ch>
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