1/* 2 * Copyright (C) 2003, 2005 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 29#include <sys/systm.h> 30#include <sys/kernel.h> 31#include <sys/file.h> 32#include <sys/dirent.h> 33#include <sys/stat.h> 34#include <sys/mount.h> 35#include <sys/mount_internal.h> 36#include <sys/vnode.h> 37#include <sys/vnode_internal.h> 38#include <sys/malloc.h> 39#include <sys/ubc.h> 40#include <sys/quota.h> 41 42#include <sys/kdebug.h> 43 44#include "hfs.h" 45#include "hfs_catalog.h" 46#include "hfs_cnode.h" 47#include "hfs_dbg.h" 48#include "hfs_mount.h" 49#include "hfs_quota.h" 50#include "hfs_endian.h" 51 52#include "hfscommon/headers/BTreesInternal.h" 53#include "hfscommon/headers/FileMgrInternal.h" 54 55 56 57void hfs_generate_volume_notifications(struct hfsmount *hfsmp) 58{ 59 fsid_t fsid; 60 u_int32_t freeblks, state=999; 61 char *volname = NULL; 62 63 if (hfsmp->vcbVN) { 64 if (strlen((char*)hfsmp->vcbVN) < 256) { 65 volname = (char*) hfsmp->vcbVN; 66 } 67 } 68 69 fsid.val[0] = (long)hfsmp->hfs_raw_dev; 70 fsid.val[1] = (long)vfs_typenum(HFSTOVFS(hfsmp)); 71 72 freeblks = hfs_freeblks(hfsmp, 1); 73 74 if (freeblks < hfsmp->hfs_freespace_notify_dangerlimit) { 75 state = 2; 76 } else if (freeblks < hfsmp->hfs_freespace_notify_warninglimit) { 77 state = 1; 78 } else if (freeblks >= hfsmp->hfs_freespace_notify_desiredlevel) { 79 state = 0; 80 } 81 82 if (state == 2 && !(hfsmp->hfs_notification_conditions & VQ_VERYLOWDISK)) { 83 /* Dump some logging to track down intermittent issues */ 84 if (volname) { 85 printf("HFS: Vol: %s Very Low Disk: freeblks: %d, dangerlimit: %d\n", volname, freeblks, hfsmp->hfs_freespace_notify_dangerlimit); 86 } 87 else { 88 printf("HFS: Very Low Disk: freeblks: %d, dangerlimit: %d\n", freeblks, hfsmp->hfs_freespace_notify_dangerlimit); 89 } 90 91#if HFS_SPARSE_DEV 92 if (hfsmp->hfs_flags & HFS_HAS_SPARSE_DEVICE) { 93 if (hfsmp->hfs_backingfs_rootvp) { 94 struct mount *mp = vnode_mount (hfsmp->hfs_backingfs_rootvp); 95 /* If we're a sparse device, dump some info about the backing store... */ 96 if (mp) { 97 if (volname) { 98 printf("HFS: Vol: %s Very Low Disk: backingstore b_avail %lld, tag %d\n", volname, mp->mnt_vfsstat.f_bavail, hfsmp->hfs_backingfs_rootvp->v_tag); 99 } 100 else { 101 printf("HFS: Very Low Disk: backingstore b_avail %lld, tag %d\n", mp->mnt_vfsstat.f_bavail, hfsmp->hfs_backingfs_rootvp->v_tag); 102 } 103 } 104 } 105 } 106#endif 107 hfsmp->hfs_notification_conditions |= (VQ_VERYLOWDISK|VQ_LOWDISK); 108 vfs_event_signal(&fsid, hfsmp->hfs_notification_conditions, (intptr_t)NULL); 109 } else if (state == 1) { 110 if (!(hfsmp->hfs_notification_conditions & VQ_LOWDISK)) { 111 if (volname) { 112 printf("HFS: Low Disk: Vol: %s freeblks: %d, warninglimit: %d\n", volname, freeblks, hfsmp->hfs_freespace_notify_warninglimit); 113 } 114 else { 115 printf("HFS: Low Disk: freeblks: %d, warninglimit: %d\n", freeblks, hfsmp->hfs_freespace_notify_warninglimit); 116 } 117 hfsmp->hfs_notification_conditions |= VQ_LOWDISK; 118 vfs_event_signal(&fsid, hfsmp->hfs_notification_conditions, (intptr_t)NULL); 119 } else if (hfsmp->hfs_notification_conditions & VQ_VERYLOWDISK) { 120 hfsmp->hfs_notification_conditions &= ~VQ_VERYLOWDISK; 121 vfs_event_signal(&fsid, hfsmp->hfs_notification_conditions, (intptr_t)NULL); 122 } 123 } else if (state == 0) { 124 if (hfsmp->hfs_notification_conditions & (VQ_LOWDISK|VQ_VERYLOWDISK)) { 125 hfsmp->hfs_notification_conditions &= ~(VQ_VERYLOWDISK|VQ_LOWDISK); 126 if (hfsmp->hfs_notification_conditions == 0) { 127 vfs_event_signal(&fsid, VQ_UPDATE, (intptr_t)NULL); 128 } else { 129 vfs_event_signal(&fsid, hfsmp->hfs_notification_conditions, (intptr_t)NULL); 130 } 131 } 132 } 133} 134