BSD 4_1c_2 release

[unix-history] / usr / src / usr.lib / undoc / libpriv / addquota.c

/*      @(#)addquota.c  4.5     (Melbourne)     82/02/16        */

/*
* add lpdquota data
*/

#include <sys/types.h>
#include <sys/quota.h>

/* the "-1" in the next line is cause quotas are vals you have to be < than */
#define Sum(a)  if (from->a && to->a) to->a += from->a - 1; else to->a = 0

addquota(to, from)
register struct dqblk *to, *from;
{
       register d1, d2;

       d1 = to->dqb_ilim - to->dqb_iq;
       d2 = from->dqb_ilim - from->dqb_iq;
       if (d1 < 0)
               d1 = 0;
       if (d2 < 0)
               d2 = 0;

       Sum(dqb_iq);

       if (to->dqb_iq && to->dqb_ilim && from->dqb_ilim)
               to->dqb_ilim = to->dqb_iq + (d1 > d2 ? d1 : d2);
       else
               to->dqb_ilim = 0;

       d1 = to->dqb_blim - to->dqb_quot;
       d2 = from->dqb_blim - from->dqb_quot;
       if (d1 < 0)
               d1 = 0;
       if (d2 < 0)
               d2 = 0;

       Sum(dqb_quot);

       if (to->dqb_quot && to->dqb_blim && from->dqb_blim)
               to->dqb_blim = to->dqb_quot + (d1 > d2 ? d1 : d2);
       else
               to->dqb_blim = 0;
}