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BSD 4.3reno

/* ftamconctl.c - FPM: encode/decode concurrency control */

#ifndef	lint
static char *rcsid = "$Header: /var/lib/cvsd/repos/CSRG/43BSDReno/contrib/isode-beta/ftam/ftamconctl.c,v 1.1.1.1 2018/04/24 16:12:56 root Exp $";
#endif

/* 
 * $Header: /var/lib/cvsd/repos/CSRG/43BSDReno/contrib/isode-beta/ftam/ftamconctl.c,v 1.1.1.1 2018/04/24 16:12:56 root Exp $
 *
 *
 * $Log: ftamconctl.c,v $
 * Revision 1.1.1.1  2018/04/24 16:12:56  root
 * BSD 4.3reno
 *
 * Revision 7.2  90/07/09  14:36:42  mrose
 * sync
 * 
 * Revision 7.1  90/03/23  10:54:01  mrose
 * update
 * 
 * Revision 7.0  89/11/23  21:53:31  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 "fpkt.h"

/*    DATA */

static int fc2lock[] = {
    int_FTAM_Lock_shared, int_FTAM_Lock_exclusive,
    int_FTAM_Lock_not__required, int_FTAM_Lock_no__access
};

static int lock2fc[] = {
    FLOCK_NOTREQD, FLOCK_SHARED, FLOCK_EXCLUSIVE, FLOCK_NOACCESS
};


#define FCON_NOTREQD	0x01
#define FCON_SHARED     0x02
#define FCON_EXCLUSIVE  0x04
#define FCON_NOACCESS   0x08

struct pair fconctl_pairs [] = {
              FCON_NOTREQD, bit_FTAM_Concurrency__Key_not__required,
              FCON_SHARED, bit_FTAM_Concurrency__Key_shared,
              FCON_EXCLUSIVE, bit_FTAM_Concurrency__Key_exclusive,
              FCON_NOACCESS, bit_FTAM_Concurrency__Key_no__access,
              0, 0
};

/*  */

struct type_FTAM_Concurrency__Control *conctl2fpm (fsb, fc, fti)
register struct ftamblk *fsb;
register struct FTAMconcurrency *fc;
struct FTAMindication *fti;
{
    register struct type_FTAM_Concurrency__Control *fpm;

    if ((fpm = (struct type_FTAM_Concurrency__Control *)
		    calloc (1, sizeof *fpm)) == NULL) {
no_mem: ;
	(void) ftamlose (fti, FS_GEN (fsb), 1, NULLCP, "out of memory");
	if (fpm)
	    free_FTAM_Concurrency__Control (fpm);
	return NULL;
    }

#define	dolock(s,t) \
{ \
    if ((fpm -> s = (struct type_FTAM_Lock *) \
			    calloc (1, sizeof *fpm -> s)) \
	    == NULL) \
	goto no_mem; \
    fpm -> s -> parm = fc2lock [fc -> t & FLOCK_MASK]; \
}
    dolock (read, fc_readlock);
    dolock (insert, fc_insertlock);
    dolock (replace, fc_replacelock);
    dolock (extend, fc_extendlock);
    dolock (erase, fc_eraselock);
    dolock (read__attribute, fc_readattrlock);
    dolock (change__attribute, fc_chngattrlock);
    dolock (delete, fc_deletelock);
#undef	dolock

    return fpm;
}

/*  */

/* ARGSUSED */

int	fpm2conctl (fsb, fpm, fc, fti)
struct ftamblk *fsb;
register struct type_FTAM_Concurrency__Control *fpm;
register struct FTAMconcurrency *fc;
struct FTAMindication *fti;
{
    FCINIT (fc);

#define	dolock(s,t) \
{ \
    fc -> t = lock2fc [fpm -> s -> parm]; \
}
    dolock (read, fc_readlock);
    dolock (insert, fc_insertlock);
    dolock (replace, fc_replacelock);
    dolock (extend, fc_extendlock);
    dolock (erase, fc_eraselock);
    dolock (read__attribute, fc_readattrlock);
    dolock (change__attribute, fc_chngattrlock);
    dolock (delete, fc_deletelock);
#undef	dolock

    return OK;
}

/*  */

struct type_FTAM_Concurrency__Access *conacc2fpm (fsb, fc, fti)
register struct ftamblk *fsb;
register struct FTAMconcurrency *fc;
struct FTAMindication *fti;
{
    register struct type_FTAM_Concurrency__Access *fpm;
    int key;

    if ((fpm = (struct type_FTAM_Concurrency__Access *)
                    calloc (1, sizeof *fpm)) == NULL) {
        (void) ftamlose (fti, FS_GEN (fsb), 1, NULLCP, "out of memory");
        if (fpm)
            free_FTAM_Concurrency__Access (fpm);
        return NULL;
    }

#define dolock(s,t) \
{ \
    key = (int) (fc -> t & FLOCK_MASK); \
    fpm -> s = bits2fpm (fsb, fconctl_pairs, key, fti); \
}

    dolock (read, fc_readlock);
    dolock (insert, fc_insertlock);
    dolock (replace, fc_replacelock);
    dolock (extend, fc_extendlock);
    dolock (erase, fc_eraselock);
    dolock (read__attribute, fc_readattrlock);
    dolock (change__attribute, fc_chngattrlock);
    dolock (delete, fc_deletelock);
#undef  dolock

    return fpm;
}


int     fpm2conacc (fsb, fpm, fc, fti)
struct ftamblk *fsb;
register struct type_FTAM_Concurrency__Access *fpm;
register struct FTAMconcurrency *fc;
struct FTAMindication *fti;
{
    int	    key;

    FCINIT (fc);

#define dolock(s,t) \
{ \
    key = fc -> t; \
    (void) fpm2bits (fsb, fconctl_pairs, fpm -> s, &key, fti); \
}
    dolock (read, fc_readlock);
    dolock (insert, fc_insertlock);
    dolock (replace, fc_replacelock);
    dolock (extend, fc_extendlock);
    dolock (erase, fc_eraselock);
    dolock (read__attribute, fc_readattrlock);
    dolock (change__attribute, fc_chngattrlock);
    dolock (delete, fc_deletelock);
#undef  dolock

    return OK;

}

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