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      1 /* $NetBSD: quota1_subr.c,v 1.8 2023/02/22 21:49:45 riastradh Exp $ */
      2 /*-
      3   * Copyright (c) 2010 Manuel Bouyer
      4   * All rights reserved.
      5   *
      6   * Redistribution and use in source and binary forms, with or without
      7   * modification, are permitted provided that the following conditions
      8   * are met:
      9   * 1. Redistributions of source code must retain the above copyright
     10   *    notice, this list of conditions and the following disclaimer.
     11   * 2. Redistributions in binary form must reproduce the above copyright
     12   *    notice, this list of conditions and the following disclaimer in the
     13   *    documentation and/or other materials provided with the distribution.
     14   *
     15   * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     16   * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     17   * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     18   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     19   * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     20   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     21   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     22   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     23   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     24   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     25   * POSSIBILITY OF SUCH DAMAGE.
     26   */
     27 
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: quota1_subr.c,v 1.8 2023/02/22 21:49:45 riastradh Exp $");
     30 
     31 #include <sys/types.h>
     32 #include <machine/limits.h>
     33 
     34 #include <sys/quota.h>
     35 #include <ufs/ufs/quota1.h>
     36 
     37 static uint64_t
     38 dqblk2q2e_limit(uint32_t lim)
     39 {
     40 	if (lim == 0)
     41 		return UQUAD_MAX;
     42 	else
     43 		return (lim - 1);
     44 }
     45 
     46 static uint32_t
     47 q2e2dqblk_limit(uint64_t lim)
     48 {
     49 	if (lim == UQUAD_MAX)
     50 		return 0;
     51 	else
     52 		return (lim + 1);
     53 }
     54 
     55 void
     56 dqblk_to_quotavals(const struct dqblk *dqblk,
     57     struct quotaval *blocks, struct quotaval *files)
     58 {
     59 	/* XXX is qv_grace getting handled correctly? */
     60 
     61 	blocks->qv_hardlimit  = dqblk2q2e_limit(dqblk->dqb_bhardlimit);
     62 	blocks->qv_softlimit  = dqblk2q2e_limit(dqblk->dqb_bsoftlimit);
     63 	blocks->qv_usage      = dqblk->dqb_curblocks;
     64 	blocks->qv_expiretime = dqblk->dqb_btime;
     65 
     66 	files->qv_hardlimit  = dqblk2q2e_limit(dqblk->dqb_ihardlimit);
     67 	files->qv_softlimit  = dqblk2q2e_limit(dqblk->dqb_isoftlimit);
     68 	files->qv_usage      = dqblk->dqb_curinodes;
     69 	files->qv_expiretime = dqblk->dqb_itime;
     70 }
     71 
     72 void
     73 quotavals_to_dqblk(const struct quotaval *blocks, const struct quotaval *files,
     74     struct dqblk *dqblk)
     75 {
     76 	/* XXX is qv_grace getting handled correctly? */
     77 
     78 	dqblk->dqb_bhardlimit = q2e2dqblk_limit(blocks->qv_hardlimit);
     79 	dqblk->dqb_bsoftlimit = q2e2dqblk_limit(blocks->qv_softlimit);
     80 	dqblk->dqb_curblocks  = blocks->qv_usage;
     81 	dqblk->dqb_btime      = blocks->qv_expiretime;
     82 
     83 	dqblk->dqb_ihardlimit = q2e2dqblk_limit(files->qv_hardlimit);
     84 	dqblk->dqb_isoftlimit = q2e2dqblk_limit(files->qv_softlimit);
     85 	dqblk->dqb_curinodes  = files->qv_usage;
     86 	dqblk->dqb_itime      = files->qv_expiretime;
     87 }
     88