LXR darwin-xnu/bsd/hfs/hfs

   1/*
   2 * Copyright (C) 2003 Apple Computer, Inc. All rights reserved.
   3 *
   4 * @APPLE_LICENSE_HEADER_START@
   5 * 
   6 * The contents of this file constitute Original Code as defined in and
   7 * are subject to the Apple Public Source License Version 1.1 (the
   8 * "License").  You may not use this file except in compliance with the
   9 * License.  Please obtain a copy of the License at
  10 * http://www.apple.com/publicsource and read it before using this file.
  11 * 
  12 * This Original Code and all software distributed under the License are
  13 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17 * License for the specific language governing rights and limitations
  18 * under the License.
  19 * 
  20 * @APPLE_LICENSE_HEADER_END@
  21 */
  22
  23#include <sys/systm.h>
  24#include <sys/kernel.h>
  25#include <sys/file.h>
  26#include <sys/dirent.h>
  27#include <sys/stat.h>
  28#include <sys/mount.h>
  29#include <sys/vnode.h>
  30#include <sys/malloc.h>
  31#include <sys/ubc.h>
  32#include <sys/quota.h>
  33
  34#include <sys/kdebug.h>
  35
  36#include "hfs.h"
  37#include "hfs_catalog.h"
  38#include "hfs_cnode.h"
  39#include "hfs_dbg.h"
  40#include "hfs_mount.h"
  41#include "hfs_quota.h"
  42#include "hfs_endian.h"
  43
  44#include "hfscommon/headers/BTreesInternal.h"
  45#include "hfscommon/headers/FileMgrInternal.h"
  46
  47
  48
  49void hfs_generate_volume_notifications(struct hfsmount *hfsmp) {
  50        ExtendedVCB *vcb = HFSTOVCB(hfsmp);
  51        fsid_t fsid;
  52                
  53        fsid.val[0] = (long)hfsmp->hfs_raw_dev;
  54        fsid.val[1] = (long)vfs_typenum(HFSTOVFS(hfsmp));
  55        
  56        if (hfsmp->hfs_notification_conditions & VQ_LOWDISK) {
  57                /* Check to see whether the free space is back above the minimal level: */
  58                if (hfs_freeblks(hfsmp, 1) > hfsmp->hfs_freespace_notify_desiredlevel) {
  59            hfsmp->hfs_notification_conditions &= ~VQ_LOWDISK;
  60            vfs_event_signal(&fsid, hfsmp->hfs_notification_conditions, NULL);
  61                }
  62        } else {
  63                /* Check to see whether the free space fell below the requested limit: */
  64                if (hfs_freeblks(hfsmp, 1) < hfsmp->hfs_freespace_notify_warninglimit) {
  65            hfsmp->hfs_notification_conditions |= VQ_LOWDISK;
  66            vfs_event_signal(&fsid, hfsmp->hfs_notification_conditions, NULL);
  67                }
  68        };
  69}
  70