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    Length: 4079 (0xfef)
    Types: TextFile
    Names: »ssaprelease1.c«

└─⟦3d0c2be1b⟧ Bits:30001254 ISODE-5.0 Tape
    └─⟦eba4602b1⟧ »./isode-5.0.tar.Z« 
        └─⟦d3ac74d73⟧ 
            └─⟦this⟧ »isode-5.0/ssap/ssaprelease1.c« 

TextFile

/* ssaprelease1.c - SPM: initiate release */

#ifndef	lint
static char *rcsid = "$Header: /f/osi/ssap/RCS/ssaprelease1.c,v 6.0 89/03/18 23:43:57 mrose Rel $";
#endif

/* 
 * $Header: /f/osi/ssap/RCS/ssaprelease1.c,v 6.0 89/03/18 23:43:57 mrose Rel $
 *
 *
 * $Log:	ssaprelease1.c,v $
 * Revision 6.0  89/03/18  23:43:57  mrose
 * Release 5.0
 * 
 */

/*
 *				  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-RELEASE.REQUEST */

#define	dotoken(requires,shift,bit,type) \
{ \
    if ((sb -> sb_requirements & requires) && !(sb -> sb_owned & bit)) \
	return ssaplose (si, SC_OPERATION, NULLCP, \
		    "%s token not owned by you", type); \
}

/* \f

 */

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

    missingP (sr);
    missingP (si);

    smask = sigioblock ();

    ssapPsig (sb, sd);
    toomuchP (sb, data, cc, SF_SIZE, "release");

    result = SRelRequestAux (sb, data, cc, sr, si);

    (void) sigiomask (smask);

    return result;
}

/* \f

 */

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

    dotokens ();

    if (sb -> sb_flags & SB_CD)
	return ssaplose (si, SC_OPERATION, NULLCP,
		"capability data request in progress");
    if (sb -> sb_flags & SB_CDA)
	return ssaplose (si, SC_OPERATION, NULLCP,
		"awaiting your capability data response");
    if (sb -> sb_flags & SB_GTC)
	return ssaplose (si, SC_OPERATION, NULLCP,
		"give control request in progress");
    if (sb -> sb_flags & SB_MAA)
	return ssaplose (si, SC_OPERATION, "awaiting your majorsync response");

    if (sb -> sb_xspdu || sb -> sb_spdu)
	return ssaplose (si, SC_WAITING, NULLCP, NULLCP);

    code = SPDU_FN;

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

    if (code == SPDU_FN) {
	s -> s_mask |= SMASK_FN_DISC;
	s -> s_fn_disconnect = FN_DISC_RELEASE;
    }

    if (cc > 0) {
	s -> s_mask |= SMASK_UDATA_PGI;
	s -> s_udata = data, s -> s_ulen = cc;
    }
    else
	s -> s_udata = NULL, s -> s_ulen = 0;
    result = spkt2sd (s, sb -> sb_fd, 0, si);
    s -> s_mask &= ~SMASK_UDATA_PGI;
    s -> s_udata = NULL, s -> s_ulen = 0;

    freespkt (s);
    if (result == NOTOK)
	goto out1;

    if ((s = sb2spkt (sb, si, NOTOK, NULLTX)) == NULL)
	goto out2;

    bzero ((char *) sr, sizeof *sr);
    switch (s -> s_code) {
	case SPDU_FN: 
	    freespkt (s);
	    code = SPDU_DN;
	    goto again;	    

	case SPDU_DN: 
	    sr -> sr_affirmative = 1;
	    copySPKTdata (s, sr);
	    freespkt (s);
	    freesblk (sb);
	    return OK;

	case SPDU_NF: 
	    if (!(sb -> sb_requirements & SR_RLS_EXISTS)
		    || !(sb -> sb_owned & ST_RLS_TOKEN))
		goto bad_nf;
	    sr -> sr_affirmative = 0;
	    copySPKTdata (s, sr);
	    freespkt (s);
	    return OK;

	case SPDU_RS:
	    if (sb -> sb_spdu)	/* XXX */
		freespkt (sb -> sb_spdu);
	    sb -> sb_spdu = s;
	    return ssaplose (si, SC_WAITING, NULLCP, NULLCP);

	case SPDU_AB: 
	    si -> si_type = SI_ABORT;
	    {
		register struct SSAPabort  *sa = &si -> si_abort;

		if (!(sa -> sa_peer = (s -> s_ab_disconnect & AB_DISC_USER)
			    ? 1 : 0))
		    sa -> sa_reason = SC_ABORT;
		sa -> sa_info = s -> s_udata, sa -> sa_cc = s -> s_ulen;
		sa -> sa_realinfo = s -> s_udata, s -> s_udata = NULL;
	    }
	    break;

	default: 
bad_nf: ;
	    (void) spktlose (sb -> sb_fd, si, SC_PROTOCOL, NULLCP,
		    "session protocol mangled: not expecting 0x%x",
		    s -> s_code);
	    break;
    }

out2: ;
    freespkt (s);
out1: ;
    freesblk (sb);

    return NOTOK;
}

#undef	dotoken