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.\" @(#)$RCSfile: Cns_opendir.man,v $ $Revision: 1.1.1.1 $ $Date: 2001/10/04 12:12:46 $ CERN IT-PDP/DM Jean-Philippe Baud
.\" Copyright (C) 1999-2000 by CERN/IT/PDP/DM
.\" All rights reserved
.\"
.TH CNS_OPENDIR 3 "$Date: 2001/10/04 12:12:46 $" CASTOR "Cns Library Functions"
.SH NAME
Cns_opendir \- open a CASTOR directory in the name server
.SH SYNOPSIS
.B #include <sys/types.h>
.br
\fB#include "Cns_api.h"\fR
.sp
.BI "Cns_DIR *Cns_opendir (const char *" path )
.SH DESCRIPTION
.B Cns_opendir
opens a CASTOR directory in the name server to be used in subsequent
.B Cns_readdir
operations.
A
.B Cns_DIR
structure and a buffer to cache the directory entries are allocated in the
client API.
.TP
.I path
specifies the logical pathname relative to the current CASTOR directory or
the full CASTOR pathname.
.SH RETURN VALUE
This routine returns a pointer to be used in the subsequent directory
function calls 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
A component of
.I path
prefix does not exist or
.I path
is a null pathname.
.TP
.B EACCES
Search permission is denied on a component of the
.I path
prefix or read permission is denied on
.IR path .
.TP
.B EFAULT
.I path
is a NULL pointer.
.TP
.B ENOTDIR
A component of
.I path
prefix is not a directory.
.TP
.B ENAMETOOLONG
The length of
.I path
exceeds
.B CA_MAXPATHLEN
or the length of a
.I path
component exceeds
.BR CA_MAXNAMELEN .
.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 Castor_limits(4) ,
.BR Cns_chdir(3) ,
.BR Cns_closedir(3) ,
.BR Cns_readdir(3) ,
.BR Cns_rewinddir(3)
.SH AUTHOR
\fBCASTOR\fP Team <castor.support@cern.ch>
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