xnu-517.tar.gz

[apple/xnu.git] / bsd / hfs / hfs_notification.c

diff --git a/bsd/hfs/hfs_notification.c b/bsd/hfs/hfs_notification.c
new file mode 100644 (file)
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+++ b/bsd/hfs/hfs_notification.c
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+/*
+ * Copyright (C) 2003 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/file.h>
+#include <sys/dirent.h>
+#include <sys/stat.h>
+#include <sys/buf.h>
+#include <sys/mount.h>
+#include <sys/vnode.h>
+#include <sys/malloc.h>
+#include <sys/namei.h>
+#include <sys/ubc.h>
+#include <sys/quota.h>
+
+#include <sys/kdebug.h>
+
+#include "hfs.h"
+#include "hfs_catalog.h"
+#include "hfs_cnode.h"
+#include "hfs_lockf.h"
+#include "hfs_dbg.h"
+#include "hfs_mount.h"
+#include "hfs_quota.h"
+#include "hfs_endian.h"
+
+#include "hfscommon/headers/BTreesInternal.h"
+#include "hfscommon/headers/FileMgrInternal.h"
+
+
+
+void hfs_generate_volume_notifications(struct hfsmount *hfsmp) {
+       ExtendedVCB *vcb = HFSTOVCB(hfsmp);
+       
+       if (hfsmp->hfs_notification_conditions & VQ_LOWDISK) {
+               /* Check to see whether the free space is back above the minimal level: */
+               if (hfs_freeblks(hfsmp, 1) > hfsmp->hfs_freespace_notify_desiredlevel) {
+            hfsmp->hfs_notification_conditions &= ~VQ_LOWDISK;
+            vfs_event_signal(&HFSTOVFS(hfsmp)->mnt_stat.f_fsid, hfsmp->hfs_notification_conditions, NULL);
+               }
+       } else {
+               /* Check to see whether the free space fell below the requested limit: */
+               if (hfs_freeblks(hfsmp, 1) < hfsmp->hfs_freespace_notify_warninglimit) {
+            hfsmp->hfs_notification_conditions |= VQ_LOWDISK;
+            vfs_event_signal(&HFSTOVFS(hfsmp)->mnt_stat.f_fsid, hfsmp->hfs_notification_conditions, NULL);
+               }
+       };
+}