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.\" @(#)$RCSfile: Cns_modifygrpmap.man,v $ $Revision: 1.3 $ $Date: 2007/12/13 06:52:24 $ CERN IT-GD/SC Jean-Philippe Baud
.\" Copyright (C) 2005-2007 by CERN/IT/GD/SC
.\" All rights reserved
.\"
.TH CNS_MODIFYGRPMAP 3 "$Date: 2007/12/13 06:52:24 $" CASTOR "Cns Library Functions"
.SH NAME
Cns_modifygrpmap \- modify group entry corresponding to a given virtual gid
.SH SYNOPSIS
.B #include <sys/types.h>
.br
\fB#include "Cns_api.h"\fR
.sp
.BI "int Cns_modifygrpmap (gid_t " gid ,
.BI "char *" newname )
.SH DESCRIPTION
.B Cns_modifygrpmap
modifies the group entry corresponding to a given virtual gid.
.TP
.I gid
specifies the Virtual Group Id.
.TP
.I newname
specifies the new group name.
It must be at most 255 characters long.
.LP
This function requires ADMIN privilege.
.SH RETURN VALUE
This routine returns 0 if the operation was successful or -1 if the operation
failed. In the latter case,
.B serrno
is set appropriately.
.SH ERRORS
.TP 1.3i
.B EACCES
The caller does not have ADMIN privilege.
.TP
.B EFAULT
.I newname
is a NULL pointer.
.TP
.B EEXIST
This group exists already.
.TP
.B EINVAL
This gid does not exist in the internal mapping table or the length of
.I newname
exceeds 255.
.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.
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