386BSD 0.1 development

[unix-history] / usr / othersrc / contrib / isode / ssap / ssapexpd.c

/* ssapexpd.c - SPM: write expedited data */

#ifndef lint
static char *rcsid = "$Header: /f/osi/ssap/RCS/ssapexpd.c,v 7.1 91/02/22 09:45:47 mrose Interim $";
#endif

/* 
* $Header: /f/osi/ssap/RCS/ssapexpd.c,v 7.1 91/02/22 09:45:47 mrose Interim $
*
*
* $Log:        ssapexpd.c,v $
* Revision 7.1  91/02/22  09:45:47  mrose
* Interim 6.8
* 
* Revision 7.0  89/11/23  22:25:27  mrose
* Release 6.0
* 
*/

/*
*                                NOTICE
*
*    Acquisition, use, and distribution of this module and related
*    materials are subject to the restrictions of a license agreement.
*    Consult the Preface in the User's Manual for the full terms of
*    this agreement.
*
*/


/* LINTLIBRARY */

#include <stdio.h>
#include <signal.h>
#include "spkt.h"

/* \f   S-EXPEDITED-DATA.REQUEST */

int     SExpdRequest (sd, data, cc, si)
int     sd;
char   *data;
int     cc;
struct SSAPindication  *si;
{
   SBV     smask;
   int     result;
   register struct ssapblk *sb;

   missingP (data);
   if (cc > SX_EXSIZE)
       return ssaplose (si, SC_PARAMETER, NULLCP,
                        "too much expedited user data, %d octets", cc);
   missingP (si);

   smask = sigioblock ();

   ssapPsig (sb, sd);

   result = SExpdRequestAux (sb, data, cc, si);

   (void) sigiomask (smask);

   return result;
}

/* \f */

static int  SExpdRequestAux (sb, data, cc, si)
register struct ssapblk *sb;
char   *data;
int     cc;
struct SSAPindication  *si;
{
   int     result;
   register struct ssapkt *s;

   if (!(sb -> sb_requirements & SR_EXPEDITED))
       return ssaplose (si, SC_OPERATION, NULLCP,
                   "expedited data service unavailable");

   if ((s = newspkt (SPDU_EX)) == NULL)
       return ssaplose (si, SC_CONGEST, NULLCP, "out of memory");

   s -> s_udata = data, s -> s_ulen = cc;
   result = spkt2sd (s, sb -> sb_fd, 1, si);
   s -> s_udata = NULL, s -> s_ulen = 0;

   freespkt (s);

   if (result == NOTOK)
       freesblk (sb);

   return result;
}