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/*
* Copyright (C) 2007 by CERN/IT/GD/ITR
* All rights reserved
*/
#ifndef lint
static char sccsid[] = "@(#)$RCSfile: Cns_getgrpbygids.c,v $ $Revision: 1.1 $ $Date: 2007/03/21 10:24:15 $ CERN IT-GD/ITR Jean-Philippe Baud";
#endif /* not lint */
/* Cns_getgrpbygids - get group names associated with given virtual gids */
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#if defined(_WIN32)
#include <winsock2.h>
#else
#include <unistd.h>
#include <netinet/in.h>
#endif
#include "marshall.h"
#include "Cns_api.h"
#include "Cns.h"
#include "serrno.h"
int DLL_DECL
Cns_getgrpbygids(int nbgroups, gid_t *gids, char **groupnames)
{
int c;
char func[17];
int i;
int msglen;
char *q;
char *rbp;
char repbuf[1];
char *sbp;
char sendbuf[REQBUFSZ];
struct Cns_api_thread_info *thip;
strcpy (func, "Cns_getgrpbygids");
if (Cns_apiinit (&thip))
return (-1);
if (! gids || ! groupnames) {
serrno = EFAULT;
return (-1);
}
if (nbgroups <= 0) {
serrno = EINVAL;
return (-1);
}
/* Build request header */
sbp = sendbuf;
marshall_LONG (sbp, CNS_MAGIC);
marshall_LONG (sbp, CNS_GETGRPNAMES);
q = sbp; /* save pointer. The next field will be updated */
msglen = 3 * LONGSIZE;
marshall_LONG (sbp, msglen);
/* Build request body */
marshall_LONG (sbp, nbgroups);
for (i = 0; i < nbgroups; i++)
marshall_LONG (sbp, gids[i]);
msglen = sbp - sendbuf;
marshall_LONG (q, msglen); /* update length field */
c = send2nsdx (NULL, NULL, sendbuf, msglen, repbuf, sizeof(repbuf),
(void **)groupnames, NULL);
return (c);
}
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