/*
- * Copyright (C) 2003 Apple Computer, Inc. All rights reserved.
+ * Copyright (C) 2003, 2005 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * 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. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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 OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * 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@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#include <sys/systm.h>
#include <sys/file.h>
#include <sys/dirent.h>
#include <sys/stat.h>
-#include <sys/buf.h>
#include <sys/mount.h>
+#include <sys/mount_internal.h>
#include <sys/vnode.h>
+#include <sys/vnode_internal.h>
#include <sys/malloc.h>
-#include <sys/namei.h>
#include <sys/ubc.h>
#include <sys/quota.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"
-void hfs_generate_volume_notifications(struct hfsmount *hfsmp) {
- ExtendedVCB *vcb = HFSTOVCB(hfsmp);
+void hfs_generate_volume_notifications(struct hfsmount *hfsmp)
+{
+ fsid_t fsid;
+ u_int32_t freeblks, state=999;
+
+ /* Do not generate low disk notifications for read-only volumes */
+ if (hfsmp->hfs_flags & HFS_READ_ONLY) {
+ return;
+ }
+
+ fsid.val[0] = hfsmp->hfs_raw_dev;
+ fsid.val[1] = vfs_typenum(HFSTOVFS(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);
+ freeblks = hfs_freeblks(hfsmp, 1);
+
+ if (freeblks < hfsmp->hfs_freespace_notify_dangerlimit) {
+ state = 2;
+ } else if (freeblks < hfsmp->hfs_freespace_notify_warninglimit) {
+ state = 1;
+ } else if (freeblks >= hfsmp->hfs_freespace_notify_desiredlevel) {
+ state = 0;
+ }
+
+ /* Free blocks are less than dangerlimit for the first time */
+ if (state == 2 && !(hfsmp->hfs_notification_conditions & VQ_VERYLOWDISK)) {
+ /* Dump some logging to track down intermittent issues */
+ printf("hfs: set VeryLowDisk: vol:%s, freeblks:%d, dangerlimit:%d\n", hfsmp->vcbVN, freeblks, hfsmp->hfs_freespace_notify_dangerlimit);
+
+#if HFS_SPARSE_DEV
+ // If we're a sparse device, dump some info about the backing store..
+ hfs_lock_mount(hfsmp);
+ vnode_t backing_vp = hfsmp->hfs_backingfs_rootvp;
+ if (backing_vp && vnode_get(backing_vp) != 0)
+ backing_vp = NULL;
+ hfs_unlock_mount(hfsmp);
+
+ if (backing_vp) {
+ struct mount *mp = vnode_mount(backing_vp);
+ printf("hfs: set VeryLowDisk: vol:%s, backingstore b_avail:%lld, tag:%d\n",
+ hfsmp->vcbVN, mp->mnt_vfsstat.f_bavail, backing_vp->v_tag);
+ vnode_put(backing_vp);
+ }
+#endif
+
+ hfsmp->hfs_notification_conditions |= (VQ_VERYLOWDISK|VQ_LOWDISK);
+ vfs_event_signal(&fsid, hfsmp->hfs_notification_conditions, (intptr_t)NULL);
+ } else if (state == 1) {
+ /* Free blocks are less than warning limit for the first time */
+ if (!(hfsmp->hfs_notification_conditions & VQ_LOWDISK)) {
+ printf("hfs: set LowDisk: vol:%s, freeblks:%d, warninglimit:%d\n", hfsmp->vcbVN, freeblks, hfsmp->hfs_freespace_notify_warninglimit);
+ hfsmp->hfs_notification_conditions |= VQ_LOWDISK;
+ vfs_event_signal(&fsid, hfsmp->hfs_notification_conditions, (intptr_t)NULL);
+ } else if (hfsmp->hfs_notification_conditions & VQ_VERYLOWDISK) {
+ /* Free blocks count has increased from danger limit to warning limit, so just clear VERYLOWDISK warning */
+ printf("hfs: clear VeryLowDisk: vol:%s, freeblks:%d, dangerlimit:%d\n", hfsmp->vcbVN, freeblks, hfsmp->hfs_freespace_notify_dangerlimit);
+ hfsmp->hfs_notification_conditions &= ~VQ_VERYLOWDISK;
+ vfs_event_signal(&fsid, hfsmp->hfs_notification_conditions, (intptr_t)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);
+ } else if (state == 0) {
+ /* Free blocks count has increased to desirable level, so clear all conditions */
+ if (hfsmp->hfs_notification_conditions & (VQ_LOWDISK|VQ_VERYLOWDISK)) {
+ if (hfsmp->hfs_notification_conditions & VQ_LOWDISK) {
+ printf("hfs: clear LowDisk: vol:%s, freeblks:%d, warninglimit:%d, desiredlevel:%d\n", hfsmp->vcbVN, freeblks, hfsmp->hfs_freespace_notify_warninglimit, hfsmp->hfs_freespace_notify_desiredlevel);
+ }
+ if (hfsmp->hfs_notification_conditions & VQ_VERYLOWDISK) {
+ printf("hfs: clear VeryLowDisk: vol:%s, freeblks:%d, dangerlimit:%d\n", hfsmp->vcbVN, freeblks, hfsmp->hfs_freespace_notify_warninglimit);
+ }
+ hfsmp->hfs_notification_conditions &= ~(VQ_VERYLOWDISK|VQ_LOWDISK);
+ if (hfsmp->hfs_notification_conditions == 0) {
+ vfs_event_signal(&fsid, VQ_UPDATE, (intptr_t)NULL);
+ } else {
+ vfs_event_signal(&fsid, hfsmp->hfs_notification_conditions, (intptr_t)NULL);
+ }
}
- };
+ }
}
projects / apple / xnu.git / blobdiff