/*
- * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2003 Apple Computer, Inc. All rights reserved.
*
* @APPLE_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.
+ * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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 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@
*/
extern int count_lock_queue __P((void));
-extern uid_t console_user;
static void ReleaseMetaFileVNode(struct vnode *vp);
static int hfs_late_journal_init(struct hfsmount *hfsmp, HFSPlusVolumeHeader *vhp, void *_args);
+static void hfs_metadatazone_init(struct hfsmount *);
+static u_int32_t hfs_hotfile_freeblocks(struct hfsmount *);
+
+
+
u_int32_t GetLogicalBlockSize(struct vnode *vp);
/* BTree accessor routines */
char hfs_privdirname[] =
"\xE2\x90\x80\xE2\x90\x80\xE2\x90\x80\xE2\x90\x80HFS+ Private Data";
+__private_extern__
OSErr hfs_MountHFSVolume(struct hfsmount *hfsmp, HFSMasterDirectoryBlock *mdb,
struct proc *p)
{
return (EINVAL);
/* don't mount a writeable volume if its dirty, it must be cleaned by fsck_hfs */
- if ((hfsmp->hfs_fs_ronly == 0) && ((SWAP_BE16(mdb->drAtrb) & kHFSVolumeUnmountedMask) == 0))
+ if (((hfsmp->hfs_flags & HFS_READ_ONLY) == 0) &&
+ ((SWAP_BE16(mdb->drAtrb) & kHFSVolumeUnmountedMask) == 0)) {
return (EINVAL);
-
+ }
+ hfsmp->hfs_flags |= HFS_STANDARD;
/*
* The MDB seems OK: transfer info from it into VCB
* Note - the VCB starts out clear (all zeros)
vcb->vcbFilCnt = SWAP_BE32 (mdb->drFilCnt);
vcb->vcbDirCnt = SWAP_BE32 (mdb->drDirCnt);
bcopy(mdb->drFndrInfo, vcb->vcbFndrInfo, sizeof(vcb->vcbFndrInfo));
- if (!hfsmp->hfs_fs_ronly)
+ if ((hfsmp->hfs_flags & HFS_READ_ONLY) == 0)
vcb->vcbWrCnt++; /* Compensate for write of MDB on last flush */
/* convert hfs encoded name into UTF-8 string */
bzero(&cndesc, sizeof(cndesc));
cndesc.cd_parentcnid = kRootParID;
+ cndesc.cd_flags |= CD_ISMETA;
bzero(&cnattr, sizeof(cnattr));
cnattr.ca_nlink = 1;
cnattr.ca_mode = S_IFREG;
fork.cf_size = SWAP_BE32(mdb->drXTFlSize);
fork.cf_blocks = fork.cf_size / vcb->blockSize;
fork.cf_clump = SWAP_BE32(mdb->drXTClpSiz);
+ fork.cf_vblocks = 0;
fork.cf_extents[0].startBlock = SWAP_BE16(mdb->drXTExtRec[0].startBlock);
fork.cf_extents[0].blockCount = SWAP_BE16(mdb->drXTExtRec[0].blockCount);
fork.cf_extents[1].startBlock = SWAP_BE16(mdb->drXTExtRec[1].startBlock);
&vcb->extentsRefNum);
if (error) goto MtVolErr;
error = MacToVFSError(BTOpenPath(VTOF(vcb->extentsRefNum),
- (KeyCompareProcPtr)CompareExtentKeys,
- GetBTreeBlock, ReleaseBTreeBlock,
- ExtendBTreeFile, SetBTreeBlockSize));
+ (KeyCompareProcPtr)CompareExtentKeys));
if (error) {
VOP_UNLOCK(vcb->extentsRefNum, 0, p);
goto MtVolErr;
fork.cf_size = SWAP_BE32(mdb->drCTFlSize);
fork.cf_blocks = fork.cf_size / vcb->blockSize;
fork.cf_clump = SWAP_BE32(mdb->drCTClpSiz);
+ fork.cf_vblocks = 0;
fork.cf_extents[0].startBlock = SWAP_BE16(mdb->drCTExtRec[0].startBlock);
fork.cf_extents[0].blockCount = SWAP_BE16(mdb->drCTExtRec[0].blockCount);
fork.cf_extents[1].startBlock = SWAP_BE16(mdb->drCTExtRec[1].startBlock);
goto MtVolErr;
}
error = MacToVFSError(BTOpenPath(VTOF(vcb->catalogRefNum),
- (KeyCompareProcPtr)CompareCatalogKeys,
- GetBTreeBlock, ReleaseBTreeBlock,
- ExtendBTreeFile, SetBTreeBlockSize));
+ (KeyCompareProcPtr)CompareCatalogKeys));
if (error) {
VOP_UNLOCK(vcb->catalogRefNum, 0, p);
VOP_UNLOCK(vcb->extentsRefNum, 0, p);
//
//*******************************************************************************
+__private_extern__
OSErr hfs_MountHFSPlusVolume(struct hfsmount *hfsmp, HFSPlusVolumeHeader *vhp,
off_t embeddedOffset, u_int64_t disksize, struct proc *p, void *args)
{
register ExtendedVCB *vcb;
struct cat_desc cndesc;
struct cat_attr cnattr;
+ struct cat_fork cfork;
UInt32 blockSize;
+ u_int64_t volumesize;
+ struct BTreeInfoRec btinfo;
+ u_int16_t signature;
+ u_int16_t version;
+ int i;
OSErr retval;
- // XXXdbg - added the kHFSJSigWord case
- if ((SWAP_BE16(vhp->signature) != kHFSPlusSigWord &&
- SWAP_BE16(vhp->signature) != kHFSJSigWord) ||
- SWAP_BE16(vhp->version) != kHFSPlusVersion) {
- // XXXdbg
- printf("hfs: mount: sig 0x%x and version 0x%x are not HFS or HFS+.\n",
- vhp->signature, vhp->version);
+ signature = SWAP_BE16(vhp->signature);
+ version = SWAP_BE16(vhp->version);
+
+ if (signature == kHFSPlusSigWord) {
+ if (version != kHFSPlusVersion) {
+ printf("hfs_mount: invalid HFS+ version: %d\n", version);
+ return (EINVAL);
+ }
+ } else if (signature == kHFSXSigWord) {
+ if (version != kHFSXVersion) {
+ printf("hfs_mount: invalid HFSX version: %d\n", version);
+ return (EINVAL);
+ }
+ /* The in-memory signature is always 'H+'. */
+ signature = kHFSPlusSigWord;
+ hfsmp->hfs_flags |= HFS_X;
+ } else {
+ printf("hfs_mount: invalid HFS+ sig 0x%04x\n", signature);
return (EINVAL);
}
/* Block size must be at least 512 and a power of 2 */
blockSize = SWAP_BE32(vhp->blockSize);
- if (blockSize < 512 || (blockSize & (blockSize-1)) != 0)
+ if (blockSize < 512 || !powerof2(blockSize))
return (EINVAL);
/* don't mount a writable volume if its dirty, it must be cleaned by fsck_hfs */
- if (hfsmp->hfs_fs_ronly == 0 && hfsmp->jnl == NULL && (SWAP_BE32(vhp->attributes) & kHFSVolumeUnmountedMask) == 0)
+ if ((hfsmp->hfs_flags & HFS_READ_ONLY) == 0 && hfsmp->jnl == NULL &&
+ (SWAP_BE32(vhp->attributes) & kHFSVolumeUnmountedMask) == 0)
return (EINVAL);
/* Make sure we can live with the physical block size. */
if ((disksize & (hfsmp->hfs_phys_block_size - 1)) ||
(embeddedOffset & (hfsmp->hfs_phys_block_size - 1)) ||
- (SWAP_BE32(vhp->blockSize) < hfsmp->hfs_phys_block_size)) {
+ (blockSize < hfsmp->hfs_phys_block_size)) {
return (ENXIO);
}
/*
*/
vcb = HFSTOVCB(hfsmp);
- vcb->vcbSigWord = SWAP_BE16(vhp->signature);
-
- // XXXdbg - remap this in case we've mounted a dirty journaled volume
- if (vcb->vcbSigWord == kHFSJSigWord) {
- vcb->vcbSigWord = kHFSPlusSigWord;
- }
-
+ vcb->vcbSigWord = signature;
vcb->vcbJinfoBlock = SWAP_BE32(vhp->journalInfoBlock);
vcb->vcbLsMod = to_bsd_time(SWAP_BE32(vhp->modifyDate));
vcb->vcbAtrb = (UInt16)SWAP_BE32(vhp->attributes);
bcopy(vhp->finderInfo, vcb->vcbFndrInfo, sizeof(vhp->finderInfo));
vcb->vcbAlBlSt = 0; /* hfs+ allocation blocks start at first block of volume */
- if (!hfsmp->hfs_fs_ronly)
+ if ((hfsmp->hfs_flags & HFS_READ_ONLY) == 0)
vcb->vcbWrCnt++; /* compensate for write of Volume Header on last flush */
VCB_LOCK_INIT(vcb);
vcb->nextAllocation = SWAP_BE32(vhp->nextAllocation);
vcb->totalBlocks = SWAP_BE32(vhp->totalBlocks);
vcb->freeBlocks = SWAP_BE32(vhp->freeBlocks);
- vcb->blockSize = SWAP_BE32(vhp->blockSize);
+ vcb->blockSize = blockSize;
vcb->encodingsBitmap = SWAP_BE64(vhp->encodingsBitmap);
vcb->localCreateDate = SWAP_BE32(vhp->createDate);
bzero(&cndesc, sizeof(cndesc));
cndesc.cd_parentcnid = kRootParID;
+ cndesc.cd_flags |= CD_ISMETA;
bzero(&cnattr, sizeof(cnattr));
cnattr.ca_nlink = 1;
cnattr.ca_mode = S_IFREG;
cndesc.cd_namelen = strlen(hfs_extname);
cndesc.cd_cnid = cnattr.ca_fileid = kHFSExtentsFileID;
- SWAP_HFS_PLUS_FORK_DATA (&vhp->extentsFile);
- cnattr.ca_blocks = vhp->extentsFile.totalBlocks;
-
- retval = hfs_getnewvnode(hfsmp, NULL, &cndesc, 0, &cnattr,
- (struct cat_fork *)&vhp->extentsFile,
+ cfork.cf_size = SWAP_BE64 (vhp->extentsFile.logicalSize);
+ cfork.cf_clump = SWAP_BE32 (vhp->extentsFile.clumpSize);
+ cfork.cf_blocks = SWAP_BE32 (vhp->extentsFile.totalBlocks);
+ cfork.cf_vblocks = 0;
+ cnattr.ca_blocks = cfork.cf_blocks;
+ for (i = 0; i < kHFSPlusExtentDensity; i++) {
+ cfork.cf_extents[i].startBlock =
+ SWAP_BE32 (vhp->extentsFile.extents[i].startBlock);
+ cfork.cf_extents[i].blockCount =
+ SWAP_BE32 (vhp->extentsFile.extents[i].blockCount);
+ }
+ retval = hfs_getnewvnode(hfsmp, NULL, &cndesc, 0, &cnattr, &cfork,
&vcb->extentsRefNum);
- SWAP_HFS_PLUS_FORK_DATA (&vhp->extentsFile);
if (retval) goto ErrorExit;
retval = MacToVFSError(BTOpenPath(VTOF(vcb->extentsRefNum),
- (KeyCompareProcPtr) CompareExtentKeysPlus,
- GetBTreeBlock, ReleaseBTreeBlock,
- ExtendBTreeFile, SetBTreeBlockSize));
+ (KeyCompareProcPtr) CompareExtentKeysPlus));
if (retval) {
VOP_UNLOCK(vcb->extentsRefNum, 0, p);
goto ErrorExit;
cndesc.cd_namelen = strlen(hfs_catname);
cndesc.cd_cnid = cnattr.ca_fileid = kHFSCatalogFileID;
- SWAP_HFS_PLUS_FORK_DATA(&vhp->catalogFile);
- cnattr.ca_blocks = vhp->catalogFile.totalBlocks;
-
- retval = hfs_getnewvnode(hfsmp, NULL, &cndesc, 0, &cnattr,
- (struct cat_fork *)&vhp->catalogFile,
+ cfork.cf_size = SWAP_BE64 (vhp->catalogFile.logicalSize);
+ cfork.cf_clump = SWAP_BE32 (vhp->catalogFile.clumpSize);
+ cfork.cf_blocks = SWAP_BE32 (vhp->catalogFile.totalBlocks);
+ cfork.cf_vblocks = 0;
+ cnattr.ca_blocks = cfork.cf_blocks;
+ for (i = 0; i < kHFSPlusExtentDensity; i++) {
+ cfork.cf_extents[i].startBlock =
+ SWAP_BE32 (vhp->catalogFile.extents[i].startBlock);
+ cfork.cf_extents[i].blockCount =
+ SWAP_BE32 (vhp->catalogFile.extents[i].blockCount);
+ }
+ retval = hfs_getnewvnode(hfsmp, NULL, &cndesc, 0, &cnattr, &cfork,
&vcb->catalogRefNum);
- SWAP_HFS_PLUS_FORK_DATA(&vhp->catalogFile);
if (retval) {
VOP_UNLOCK(vcb->extentsRefNum, 0, p);
goto ErrorExit;
}
retval = MacToVFSError(BTOpenPath(VTOF(vcb->catalogRefNum),
- (KeyCompareProcPtr) CompareExtendedCatalogKeys,
- GetBTreeBlock, ReleaseBTreeBlock,
- ExtendBTreeFile, SetBTreeBlockSize));
+ (KeyCompareProcPtr) CompareExtendedCatalogKeys));
if (retval) {
VOP_UNLOCK(vcb->catalogRefNum, 0, p);
VOP_UNLOCK(vcb->extentsRefNum, 0, p);
goto ErrorExit;
}
+ if ((hfsmp->hfs_flags & HFS_X) &&
+ BTGetInformation(VTOF(vcb->catalogRefNum), 0, &btinfo) == 0) {
+ if (btinfo.keyCompareType == kHFSBinaryCompare) {
+ hfsmp->hfs_flags |= HFS_CASE_SENSITIVE;
+ /* Install a case-sensitive key compare */
+ (void) BTOpenPath(VTOF(vcb->catalogRefNum),
+ (KeyCompareProcPtr)cat_binarykeycompare);
+ }
+ }
/*
* Set up Allocation file vnode
cndesc.cd_namelen = strlen(hfs_vbmname);
cndesc.cd_cnid = cnattr.ca_fileid = kHFSAllocationFileID;
- SWAP_HFS_PLUS_FORK_DATA(&vhp->allocationFile);
- cnattr.ca_blocks = vhp->allocationFile.totalBlocks;
-
- retval = hfs_getnewvnode(hfsmp, NULL, &cndesc, 0, &cnattr,
- (struct cat_fork *)&vhp->allocationFile,
+ cfork.cf_size = SWAP_BE64 (vhp->allocationFile.logicalSize);
+ cfork.cf_clump = SWAP_BE32 (vhp->allocationFile.clumpSize);
+ cfork.cf_blocks = SWAP_BE32 (vhp->allocationFile.totalBlocks);
+ cfork.cf_vblocks = 0;
+ cnattr.ca_blocks = cfork.cf_blocks;
+ for (i = 0; i < kHFSPlusExtentDensity; i++) {
+ cfork.cf_extents[i].startBlock =
+ SWAP_BE32 (vhp->allocationFile.extents[i].startBlock);
+ cfork.cf_extents[i].blockCount =
+ SWAP_BE32 (vhp->allocationFile.extents[i].blockCount);
+ }
+ retval = hfs_getnewvnode(hfsmp, NULL, &cndesc, 0, &cnattr, &cfork,
&vcb->allocationsRefNum);
- SWAP_HFS_PLUS_FORK_DATA(&vhp->allocationFile);
if (retval) {
VOP_UNLOCK(vcb->catalogRefNum, 0, p);
VOP_UNLOCK(vcb->extentsRefNum, 0, p);
/* mark the volume dirty (clear clean unmount bit) */
vcb->vcbAtrb &= ~kHFSVolumeUnmountedMask;
- if (hfsmp->jnl && hfsmp->hfs_fs_ronly == 0) {
+ if (hfsmp->jnl && (hfsmp->hfs_flags & HFS_READ_ONLY) == 0) {
hfs_flushvolumeheader(hfsmp, TRUE, TRUE);
}
VOP_UNLOCK(vcb->catalogRefNum, 0, p);
VOP_UNLOCK(vcb->extentsRefNum, 0, p);
- /* setup private/hidden directory for unlinked files */
- hfsmp->hfs_private_metadata_dir = FindMetaDataDirectory(vcb);
- if (hfsmp->jnl && (hfsmp->hfs_fs_ronly == 0))
- hfs_remove_orphans(hfsmp);
-
- if ( !(vcb->vcbAtrb & kHFSVolumeHardwareLockMask) ) // if the disk is not write protected
- {
- MarkVCBDirty( vcb ); // mark VCB dirty so it will be written
- }
-
-
//
// Check if we need to do late journal initialization. This only
// happens if a previous version of MacOS X (or 9) touched the disk.
}
}
+ /*
+ * Establish a metadata allocation zone.
+ */
+ hfs_metadatazone_init(hfsmp);
+
+ /*
+ * Make any metadata zone adjustments.
+ */
+ if (hfsmp->hfs_flags & HFS_METADATA_ZONE) {
+ /* Keep the roving allocator out of the metadata zone. */
+ if (vcb->nextAllocation >= hfsmp->hfs_metazone_start &&
+ vcb->nextAllocation <= hfsmp->hfs_metazone_end) {
+ vcb->nextAllocation = hfsmp->hfs_metazone_end + 1;
+ }
+ }
+
+ /* setup private/hidden directory for unlinked files */
+ FindMetaDataDirectory(vcb);
+ if (hfsmp->jnl && ((hfsmp->hfs_flags & HFS_READ_ONLY) == 0))
+ hfs_remove_orphans(hfsmp);
+
+ if ( !(vcb->vcbAtrb & kHFSVolumeHardwareLockMask) ) // if the disk is not write protected
+ {
+ MarkVCBDirty( vcb ); // mark VCB dirty so it will be written
+ }
+
+
+ /*
+ * Allow hot file clustering if conditions allow.
+ */
+ if ((hfsmp->hfs_flags & HFS_METADATA_ZONE) &&
+ ((hfsmp->hfs_flags & HFS_READ_ONLY) == 0)) {
+ (void) hfs_recording_init(hfsmp, p);
+ }
return (0);
*
*************************************************************/
-short hfsUnmount( register struct hfsmount *hfsmp, struct proc *p)
+__private_extern__
+int
+hfsUnmount( register struct hfsmount *hfsmp, struct proc *p)
{
ExtendedVCB *vcb = HFSTOVCB(hfsmp);
int retval = E_NONE;
InvalidateCatalogCache( vcb );
+ if (hfsmp->hfc_filevp) {
+ ReleaseMetaFileVNode(hfsmp->hfc_filevp);
+ hfsmp->hfc_filevp = NULL;
+ }
+
if (vcb->vcbSigWord == kHFSPlusSigWord)
ReleaseMetaFileVNode(vcb->allocationsRefNum);
/*
- * Some 3rd party kexts link against hfs_getcatalog so keep a stub for now.
+ * Test is fork has overflow extents.
*/
-short
-hfs_getcatalog(void *p1, u_long p2, void *p3, short p4, void *p5)
-{
- return ENOENT;
-}
-
-
-int overflow_extents(struct filefork *fp)
+__private_extern__
+int
+overflow_extents(struct filefork *fp)
{
u_long blocks;
}
-/* __private_extern__ */
+/*
+ * Lock/Unlock a metadata file.
+ */
+__private_extern__
int
hfs_metafilelocking(struct hfsmount *hfsmp, u_long fileID, u_int flags, struct proc *p)
{
panic("hfs_lockmetafile: invalid fileID");
}
- /* Release, if necesary any locked buffer caches */
- if ((flags & LK_TYPE_MASK) == LK_RELEASE) {
+ if ((flags & LK_TYPE_MASK) != LK_RELEASE) {
+ flags |= LK_RETRY;
+ } else if (hfsmp->jnl == NULL) {
struct timeval tv = time;
u_int32_t lastfsync = tv.tv_sec;
(void) BTGetLastSync((FCB*)VTOF(vp), &lastfsync);
numOfLockedBuffs = count_lock_queue();
- if ((numOfLockedBuffs > kMaxLockedMetaBuffers) || ((numOfLockedBuffs>1) && ((tv.tv_sec - lastfsync) > kMaxSecsForFsync))) {
+ if ((numOfLockedBuffs > kMaxLockedMetaBuffers) ||
+ ((numOfLockedBuffs > 1) && ((tv.tv_sec - lastfsync) > kMaxSecsForFsync))) {
hfs_btsync(vp, HFS_SYNCTRANS);
}
- } else {
- flags |= LK_RETRY;
}
retval = lockmgr(&VTOC(vp)->c_lock, flags, &vp->v_interlock, p);
void * self;
pid = current_proc()->p_pid;
- self = (void *) current_thread();
+ self = (void *) current_act();
lkp = &VTOC(vp)->c_lock;
simple_lock(&lkp->lk_interlock);
* There are three ways to qualify for ownership rights on an object:
*
* 1. (a) Your UID matches the cnode's UID.
- * (b) The object in question is owned by "unknown" and
- * your UID matches the console user's UID.
+ * (b) The object in question is owned by "unknown"
* 2. (a) Permissions on the filesystem are being ignored and
* your UID matches the replacement UID.
* (b) Permissions on the filesystem are being ignored and
- * the replacement UID is "unknown" and
- * your UID matches the console user UID.
+ * the replacement UID is "unknown".
* 3. You are root.
*
*/
struct proc *p, int invokesuperuserstatus)
{
if ((cred->cr_uid == cnode_uid) || /* [1a] */
- ((cnode_uid == UNKNOWNUID) && (cred->cr_uid == console_user)) || /* [1b] */
+ (cnode_uid == UNKNOWNUID) || /* [1b] */
((HFSTOVFS(hfsmp)->mnt_flag & MNT_UNKNOWNPERMISSIONS) && /* [2] */
((cred->cr_uid == hfsmp->hfs_uid) || /* [2a] */
- ((hfsmp->hfs_uid == UNKNOWNUID) && /* [2b] */
- (cred->cr_uid == console_user)))) ||
+ (hfsmp->hfs_uid == UNKNOWNUID))) || /* [2b] */
(invokesuperuserstatus && (suser(cred, &p->p_acflag) == 0))) { /* [3] */
return (0);
} else {
* To make the HFS Plus filesystem follow UFS unlink semantics, a remove
* of an active vnode is translated to a move/rename so the file appears
* deleted. The destination folder for these move/renames is setup here
- * and a reference to it is place in hfsmp->hfs_private_metadata_dir.
+ * and a reference to it is place in hfsmp->hfs_privdir_desc.
*/
+__private_extern__
u_long
FindMetaDataDirectory(ExtendedVCB *vcb)
{
struct cnode * dcp = NULL;
struct FndrDirInfo * fndrinfo;
struct cat_desc out_desc = {0};
+ struct proc *p = current_proc();
struct timeval tv;
+ cat_cookie_t cookie;
int error;
if (vcb->vcbSigWord != kHFSPlusSigWord)
}
/* Lock catalog b-tree */
- error = hfs_metafilelocking(hfsmp, kHFSCatalogFileID, LK_EXCLUSIVE, current_proc());
- if (error)
+ if (hfs_metafilelocking(hfsmp, kHFSCatalogFileID, LK_SHARED, p) != 0)
return (0);
error = cat_lookup(hfsmp, &hfsmp->hfs_privdir_desc, 0, NULL,
&hfsmp->hfs_privdir_attr, NULL);
+ /* Unlock catalog b-tree */
+ (void) hfs_metafilelocking(hfsmp, kHFSCatalogFileID, LK_RELEASE, p);
+
if (error == 0) {
- /* Unlock catalog b-tree */
- (void) hfs_metafilelocking(hfsmp, kHFSCatalogFileID, LK_RELEASE, current_proc());
hfsmp->hfs_metadata_createdate = hfsmp->hfs_privdir_attr.ca_itime;
+ hfsmp->hfs_privdir_desc.cd_cnid = hfsmp->hfs_privdir_attr.ca_fileid;
+ /*
+ * Clear the system immutable flag if set...
+ */
+ if ((hfsmp->hfs_privdir_attr.ca_flags & SF_IMMUTABLE) &&
+ (hfsmp->hfs_flags & HFS_READ_ONLY) == 0) {
+ hfsmp->hfs_privdir_attr.ca_flags &= ~SF_IMMUTABLE;
+
+ hfs_global_shared_lock_acquire(hfsmp);
+ if (hfsmp->jnl) {
+ if ((error = journal_start_transaction(hfsmp->jnl)) != 0) {
+ hfs_global_shared_lock_release(hfsmp);
+ return (hfsmp->hfs_privdir_attr.ca_fileid);
+ }
+ }
+ if (hfs_metafilelocking(hfsmp, kHFSCatalogFileID, LK_SHARED, p) == 0) {
+ (void)cat_update(hfsmp, &hfsmp->hfs_privdir_desc,
+ &hfsmp->hfs_privdir_attr, NULL, NULL);
+ (void) hfs_metafilelocking(hfsmp, kHFSCatalogFileID, LK_RELEASE, p);
+ }
+ if (hfsmp->jnl) {
+ journal_end_transaction(hfsmp->jnl);
+ }
+ hfs_global_shared_lock_release(hfsmp);
+ }
return (hfsmp->hfs_privdir_attr.ca_fileid);
- } else if (hfsmp->hfs_fs_ronly) {
- /* Unlock catalog b-tree */
- (void) hfs_metafilelocking(hfsmp, kHFSCatalogFileID, LK_RELEASE, current_proc());
+
+ } else if (hfsmp->hfs_flags & HFS_READ_ONLY) {
+
return (0);
}
/* Setup the default attributes */
bzero(&hfsmp->hfs_privdir_attr, sizeof(struct cat_attr));
hfsmp->hfs_privdir_attr.ca_mode = S_IFDIR;
- hfsmp->hfs_privdir_attr.ca_flags = SF_IMMUTABLE;
hfsmp->hfs_privdir_attr.ca_nlink = 2;
hfsmp->hfs_privdir_attr.ca_itime = vcb->vcbCrDate;
hfsmp->hfs_privdir_attr.ca_mtime = time.tv_sec;
return (0);
}
}
+ /* Reserve some space in the Catalog file. */
+ if (cat_preflight(hfsmp, CAT_CREATE, &cookie, p) != 0) {
+ if (hfsmp->jnl) {
+ journal_end_transaction(hfsmp->jnl);
+ }
+ hfs_global_shared_lock_release(hfsmp);
+ return (0);
+ }
- error = cat_create(hfsmp, &hfsmp->hfs_privdir_desc,
- &hfsmp->hfs_privdir_attr, &out_desc);
+ if (hfs_metafilelocking(hfsmp, kHFSCatalogFileID, LK_EXCLUSIVE, p) == 0) {
+ error = cat_create(hfsmp, &hfsmp->hfs_privdir_desc,
+ &hfsmp->hfs_privdir_attr, &out_desc);
- /* Unlock catalog b-tree */
- (void) hfs_metafilelocking(hfsmp, kHFSCatalogFileID, LK_RELEASE, current_proc());
+ (void) hfs_metafilelocking(hfsmp, kHFSCatalogFileID, LK_RELEASE, p);
+ }
+
+ cat_postflight(hfsmp, &cookie, p);
+
if (error) {
if (hfsmp->jnl) {
journal_end_transaction(hfsmp->jnl);
if (error == 0) {
return (fattr->ca_fileid);
- } else if (hfsmp->hfs_fs_ronly) {
+ } else if (hfsmp->hfs_flags & HFS_READ_ONLY) {
return (0);
}
}
struct FSBufferDescriptor btdata;
struct HFSPlusCatalogFile filerec;
struct HFSPlusCatalogKey * keyp;
+ struct proc *p = current_proc();
FCB *fcb;
ExtendedVCB *vcb;
char filename[32];
char tempname[32];
size_t namelen;
+ cat_cookie_t cookie = {0};
int catlock = 0;
- int result, started_tr = 0;
+ int catreserve = 0;
+ int started_tr = 0;
+ int shared_lock = 0;
+ int result;
- if (hfsmp->hfs_orphans_cleaned)
+ if (hfsmp->hfs_flags & HFS_CLEANED_ORPHANS)
return;
vcb = HFSTOVCB(hfsmp);
MALLOC(iterator, struct BTreeIterator *, sizeof(*iterator), M_TEMP, M_WAITOK);
bzero(iterator, sizeof(*iterator));
keyp = (HFSPlusCatalogKey*)&iterator->key;
- keyp->parentID = hfsmp->hfs_private_metadata_dir;
-
- // XXXdbg
- hfs_global_shared_lock_acquire(hfsmp);
- if (hfsmp->jnl) {
- if (journal_start_transaction(hfsmp->jnl) != 0) {
- hfs_global_shared_lock_release(hfsmp);
- return;
- }
- started_tr = 1;
- }
+ keyp->parentID = hfsmp->hfs_privdir_desc.cd_cnid;
- /* Lock catalog b-tree */
- result = hfs_metafilelocking(hfsmp, kHFSCatalogFileID, LK_EXCLUSIVE, current_proc());
+ result = hfs_metafilelocking(hfsmp, kHFSCatalogFileID, LK_EXCLUSIVE, p);
if (result)
goto exit;
- catlock = 1;
-
/*
* Position the iterator at the folder thread record.
* (i.e. one record before first child)
*/
result = BTSearchRecord(fcb, iterator, NULL, NULL, iterator);
+
+ (void) hfs_metafilelocking(hfsmp, kHFSCatalogFileID, LK_RELEASE, p);
if (result)
goto exit;
/* Visit all the children in the HFS+ private directory. */
for (;;) {
+ result = hfs_metafilelocking(hfsmp, kHFSCatalogFileID, LK_EXCLUSIVE, p);
+ if (result)
+ goto exit;
+
result = BTIterateRecord(fcb, kBTreeNextRecord, iterator, &btdata, NULL);
+
+ (void) hfs_metafilelocking(hfsmp, kHFSCatalogFileID, LK_RELEASE, p);
if (result)
break;
- if (keyp->parentID != hfsmp->hfs_private_metadata_dir)
+
+ if (keyp->parentID != hfsmp->hfs_privdir_desc.cd_cnid)
break;
if (filerec.recordType != kHFSPlusFileRecord)
continue;
* Delete all files named "tempxxx", where
* xxx is the file's cnid in decimal.
*
- * Delete all files named "iNodexxx", that
- * have a link count of zero.
*/
if (bcmp(tempname, filename, namelen) == 0) {
- struct filefork fork = {0};
- struct cnode cnode = {0};
+ struct filefork dfork = {0};
+ struct filefork rfork = {0};
+ struct cnode cnode = {0};
+
+ // XXXdbg
+ hfs_global_shared_lock_acquire(hfsmp);
+ shared_lock = 1;
+ if (hfsmp->jnl) {
+ if (journal_start_transaction(hfsmp->jnl) != 0) {
+ goto exit;
+ }
+ started_tr = 1;
+ }
+
+ /*
+ * Reserve some space in the Catalog file.
+ */
+ if (cat_preflight(hfsmp, CAT_DELETE, &cookie, p) != 0) {
+ goto exit;
+ }
+ catreserve = 1;
- // XXXdebug
- //printf("hfs_remove_orphans: removing %s\n", filename);
+ /* Lock catalog b-tree */
+ if (hfs_metafilelocking(hfsmp, kHFSCatalogFileID,
+ LK_EXCLUSIVE, p) != 0) {
+ goto exit;
+ }
+ catlock = 1;
/* Build a fake cnode */
- cnode.c_desc.cd_parentcnid = hfsmp->hfs_private_metadata_dir;
+ cat_convertattr(hfsmp, (CatalogRecord *)&filerec, &cnode.c_attr,
+ &dfork.ff_data, &rfork.ff_data);
+ cnode.c_desc.cd_parentcnid = hfsmp->hfs_privdir_desc.cd_cnid;
cnode.c_desc.cd_nameptr = filename;
cnode.c_desc.cd_namelen = namelen;
- cnode.c_desc.cd_cnid = filerec.fileID;
- cnode.c_attr.ca_fileid = filerec.fileID;
- cnode.c_blocks = filerec.dataFork.totalBlocks +
- filerec.resourceFork.totalBlocks;
+ cnode.c_desc.cd_cnid = cnode.c_attr.ca_fileid;
+ cnode.c_blocks = dfork.ff_blocks + rfork.ff_blocks;
/* Position iterator at previous entry */
if (BTIterateRecord(fcb, kBTreePrevRecord, iterator,
- NULL, NULL) != 0)
+ NULL, NULL) != 0) {
break;
-
+ }
+
/* Truncate the file to zero (both forks) */
- if (filerec.dataFork.totalBlocks > 0) {
- fork.ff_cp = &cnode;
- cnode.c_datafork = ⋔
- bcopy(&filerec.dataFork, &fork.ff_data, sizeof(struct cat_fork));
- if (TruncateFileC(vcb, (FCB*)&fork, 0, false) != 0) {
- printf("error truncting data fork!\n");
- break;
+ if (dfork.ff_blocks > 0) {
+ u_int64_t fsize;
+
+ dfork.ff_cp = &cnode;
+ cnode.c_datafork = &dfork;
+ cnode.c_rsrcfork = NULL;
+ fsize = (u_int64_t)dfork.ff_blocks * (u_int64_t)HFSTOVCB(hfsmp)->blockSize;
+ while (fsize > 0) {
+ if (fsize > HFS_BIGFILE_SIZE) {
+ fsize -= HFS_BIGFILE_SIZE;
+ } else {
+ fsize = 0;
+ }
+
+ if (TruncateFileC(vcb, (FCB*)&dfork, fsize, false) != 0) {
+ printf("error truncting data fork!\n");
+ break;
+ }
+
+ //
+ // if we're iteratively truncating this file down,
+ // then end the transaction and start a new one so
+ // that no one transaction gets too big.
+ //
+ if (fsize > 0 && started_tr) {
+ journal_end_transaction(hfsmp->jnl);
+ if (journal_start_transaction(hfsmp->jnl) != 0) {
+ started_tr = 0;
+ break;
+ }
+ }
}
}
- if (filerec.resourceFork.totalBlocks > 0) {
- fork.ff_cp = &cnode;
+
+ if (rfork.ff_blocks > 0) {
+ rfork.ff_cp = &cnode;
cnode.c_datafork = NULL;
- cnode.c_rsrcfork = ⋔
- bcopy(&filerec.resourceFork, &fork.ff_data, sizeof(struct cat_fork));
- if (TruncateFileC(vcb, (FCB*)&fork, 0, false) != 0) {
+ cnode.c_rsrcfork = &rfork;
+ if (TruncateFileC(vcb, (FCB*)&rfork, 0, false) != 0) {
printf("error truncting rsrc fork!\n");
break;
}
(void)cat_update(hfsmp, &hfsmp->hfs_privdir_desc,
&hfsmp->hfs_privdir_attr, NULL, NULL);
hfs_volupdate(hfsmp, VOL_RMFILE, 0);
- }
- }
+
+ /* Drop locks and end the transaction */
+ (void) hfs_metafilelocking(hfsmp, kHFSCatalogFileID, LK_RELEASE, p);
+ cat_postflight(hfsmp, &cookie, p);
+ catlock = catreserve = 0;
+ if (started_tr) {
+ journal_end_transaction(hfsmp->jnl);
+ started_tr = 0;
+ }
+ hfs_global_shared_lock_release(hfsmp);
+ shared_lock = 0;
+
+ } /* end if */
+ } /* end for */
exit:
- /* Unlock catalog b-tree */
- if (catlock)
- (void) hfs_metafilelocking(hfsmp, kHFSCatalogFileID, LK_RELEASE, current_proc());
-
+ if (catlock) {
+ (void) hfs_metafilelocking(hfsmp, kHFSCatalogFileID, LK_RELEASE, p);
+ }
+ if (catreserve) {
+ cat_postflight(hfsmp, &cookie, p);
+ }
if (started_tr) {
journal_end_transaction(hfsmp->jnl);
}
- hfs_global_shared_lock_release(hfsmp);
+ if (shared_lock) {
+ hfs_global_shared_lock_release(hfsmp);
+ }
FREE(iterator, M_TEMP);
- hfsmp->hfs_orphans_cleaned = 1;
+ hfsmp->hfs_flags |= HFS_CLEANED_ORPHANS;
}
else
freeblks = 0;
}
+ if (freeblks > vcb->loanedBlocks)
+ freeblks -= vcb->loanedBlocks;
+ else
+ freeblks = 0;
+
+#ifdef HFS_SPARSE_DEV
+ /*
+ * When the underlying device is sparse, check the
+ * available space on the backing store volume.
+ */
+ if ((hfsmp->hfs_flags & HFS_HAS_SPARSE_DEVICE) && hfsmp->hfs_backingfs_rootvp) {
+ struct statfs statbuf; /* 272 bytes */
+ u_int32_t vfreeblks;
+ u_int32_t loanedblks;
+ struct mount * backingfs_mp;
+
+ backingfs_mp = hfsmp->hfs_backingfs_rootvp->v_mount;
+
+ if (VFS_STATFS(backingfs_mp, &statbuf, current_proc()) == 0) {
+ vfreeblks = statbuf.f_bavail;
+ /* Normalize block count if needed. */
+ if (statbuf.f_bsize != vcb->blockSize) {
+ vfreeblks = ((u_int64_t)vfreeblks * (u_int64_t)statbuf.f_bsize) / vcb->blockSize;
+ }
+ if (vfreeblks > hfsmp->hfs_sparsebandblks)
+ vfreeblks -= hfsmp->hfs_sparsebandblks;
+ else
+ vfreeblks = 0;
+
+ /* Take into account any delayed allocations. */
+ loanedblks = 2 * vcb->loanedBlocks;
+ if (vfreeblks > loanedblks)
+ vfreeblks -= loanedblks;
+ else
+ vfreeblks = 0;
+
+ freeblks = MIN(vfreeblks, freeblks);
+ }
+ }
+#endif /* HFS_SPARSE_DEV */
- freeblks -= vcb->loanedBlocks;
return (freeblks);
}
switch (err) {
case dskFulErr: /* -34 */
+ case btNoSpaceAvail: /* -32733 */
return ENOSPC;
- case btNoSpaceAvail: /* -32733 */
- return EFBIG;
case fxOvFlErr: /* -32750 */
return EOVERFLOW;
void *self;
if (index > 0) {
- self = current_thread();
+ self = current_act();
SLIST_FOREACH(entry, &dcp->c_indexlist, hi_link) {
if ((entry->hi_index == index)
&& (entry->hi_thread == self))
MALLOC(entry, struct hfs_index *, len + sizeof(struct hfs_index),
M_TEMP, M_WAITOK);
entry->hi_index = index;
- entry->hi_thread = current_thread();
+ entry->hi_thread = current_act();
bcopy(namehint, entry->hi_name, len + 1);
SLIST_INSERT_HEAD(&dcp->c_indexlist, entry, hi_link);
}
void *self;
if (index > 0) {
- self = current_thread();
+ self = current_act();
SLIST_FOREACH(entry, &dcp->c_indexlist, hi_link) {
if ((entry->hi_index == index)
&& (entry->hi_thread == self)) {
// save this off for the hack-y check in hfs_remove()
hfsmp->jnl_start = jibp->offset / SWAP_BE32(vhp->blockSize);
+ hfsmp->jnl_size = jibp->size;
if (jibp->flags & kJIJournalNeedInitMask) {
printf("hfs: Initializing the journal (joffset 0x%llx sz 0x%llx)...\n",
// we'd just re-init it on the next mount.
jibp->flags &= ~kJIJournalNeedInitMask;
jibp->flags = SWAP_BE32(jibp->flags);
+ jibp->offset = SWAP_BE64(jibp->offset);
+ jibp->size = SWAP_BE64(jibp->size);
bwrite(jinfo_bp);
jinfo_bp = NULL;
jibp = NULL;
if (hfsmp->jnl && mdbp) {
// reload the mdb because it could have changed
// if the journal had to be replayed.
+ if (mdb_offset == 0) {
+ mdb_offset = (embeddedOffset / blksize) + HFS_PRI_SECTOR(blksize);
+ }
retval = meta_bread(devvp, mdb_offset, blksize, cred, &bp);
if (retval) {
brelse(bp);
// if we expected the journal to be there and we couldn't
// create it or open it then we have to bail out.
if (hfsmp->jnl == NULL) {
- hfsmp->jnl_start = 0;
-
- printf("hfs: failed to open/create the journal (retval %d).\n", retval);
+ printf("hfs: early jnl init: failed to open/create the journal (retval %d).\n", retval);
return EINVAL;
}
// save this off for the hack-y check in hfs_remove()
hfsmp->jnl_start = jibp->offset / SWAP_BE32(vhp->blockSize);
+ hfsmp->jnl_size = jibp->size;
if (jibp->flags & kJIJournalNeedInitMask) {
printf("hfs: Initializing the journal (joffset 0x%llx sz 0x%llx)...\n",
// if we expected the journal to be there and we couldn't
// create it or open it then we have to bail out.
if (hfsmp->jnl == NULL) {
- hfsmp->jnl_start = 0;
-
- printf("hfs: failed to open/create the journal (retval %d).\n", retval);
+ printf("hfs: late jnl init: failed to open/create the journal (retval %d).\n", retval);
return EINVAL;
}
return 0;
}
+
+/*
+ * Calculate the allocation zone for metadata.
+ *
+ * This zone includes the following:
+ * Allocation Bitmap file
+ * Overflow Extents file
+ * Journal file
+ * Quota files
+ * Clustered Hot files
+ * Catalog file
+ *
+ * METADATA ALLOCATION ZONE
+ * ____________________________________________________________________________
+ * | | | | | | |
+ * | BM | JF | OEF | CATALOG |---> | HOT FILES |
+ * |____|____|_____|_______________|______________________________|___________|
+ *
+ * <------------------------------- N * 128 MB ------------------------------->
+ *
+ */
+#define GIGABYTE (u_int64_t)(1024*1024*1024)
+
+#define OVERFLOW_DEFAULT_SIZE (4*1024*1024)
+#define OVERFLOW_MAXIMUM_SIZE (128*1024*1024)
+#define JOURNAL_DEFAULT_SIZE (8*1024*1024)
+#define JOURNAL_MAXIMUM_SIZE (512*1024*1024)
+#define HOTBAND_MINIMUM_SIZE (10*1024*1024)
+#define HOTBAND_MAXIMUM_SIZE (512*1024*1024)
+
+static void
+hfs_metadatazone_init(struct hfsmount *hfsmp)
+{
+ ExtendedVCB *vcb;
+ struct BTreeInfoRec btinfo;
+ u_int64_t fs_size;
+ u_int64_t zonesize;
+ u_int64_t temp;
+ u_int64_t filesize;
+ u_int32_t blk;
+ int items;
+
+ vcb = HFSTOVCB(hfsmp);
+ fs_size = (u_int64_t)vcb->blockSize * (u_int64_t)vcb->totalBlocks;
+
+ /*
+ * For volumes less than 10 GB, don't bother.
+ */
+ if (fs_size < ((u_int64_t)10 * GIGABYTE))
+ return;
+ /*
+ * Skip non-journaled volumes as well.
+ */
+ if (hfsmp->jnl == NULL)
+ return;
+
+ /*
+ * Start with allocation bitmap (a fixed size).
+ */
+ zonesize = roundup(vcb->totalBlocks / 8, vcb->vcbVBMIOSize);
+
+ /*
+ * Overflow Extents file gets 4 MB per 100 GB.
+ */
+ items = fs_size / ((u_int64_t)100 * GIGABYTE);
+ filesize = (u_int64_t)(items + 1) * OVERFLOW_DEFAULT_SIZE;
+ if (filesize > OVERFLOW_MAXIMUM_SIZE)
+ filesize = OVERFLOW_MAXIMUM_SIZE;
+ zonesize += filesize;
+ hfsmp->hfs_overflow_maxblks = filesize / vcb->blockSize;
+
+ /*
+ * Plan for at least 8 MB of journal for each
+ * 100 GB of disk space (up to a 512 MB).
+ */
+ items = fs_size / ((u_int64_t)100 * GIGABYTE);
+ filesize = (u_int64_t)(items + 1) * JOURNAL_DEFAULT_SIZE;
+ if (filesize > JOURNAL_MAXIMUM_SIZE)
+ filesize = JOURNAL_MAXIMUM_SIZE;
+ zonesize += filesize;
+
+ /*
+ * Catalog file gets 10 MB per 1 GB.
+ *
+ * How about considering the current catalog size (used nodes * node size)
+ * and the current file data size to help estimate the required
+ * catalog size.
+ */
+ filesize = MIN((fs_size / 1024) * 10, GIGABYTE);
+ hfsmp->hfs_catalog_maxblks = filesize / vcb->blockSize;
+ zonesize += filesize;
+
+ /*
+ * Add space for hot file region.
+ *
+ * ...for now, use 5 MB per 1 GB (0.5 %)
+ */
+ filesize = (fs_size / 1024) * 5;
+ if (filesize > HOTBAND_MAXIMUM_SIZE)
+ filesize = HOTBAND_MAXIMUM_SIZE;
+ else if (filesize < HOTBAND_MINIMUM_SIZE)
+ filesize = HOTBAND_MINIMUM_SIZE;
+ /*
+ * Calculate user quota file requirements.
+ */
+ items = QF_USERS_PER_GB * (fs_size / GIGABYTE);
+ if (items < QF_MIN_USERS)
+ items = QF_MIN_USERS;
+ else if (items > QF_MAX_USERS)
+ items = QF_MAX_USERS;
+ if (!powerof2(items)) {
+ int x = items;
+ items = 4;
+ while (x>>1 != 1) {
+ x = x >> 1;
+ items = items << 1;
+ }
+ }
+ filesize += (items + 1) * sizeof(struct dqblk);
+ /*
+ * Calculate group quota file requirements.
+ *
+ */
+ items = QF_GROUPS_PER_GB * (fs_size / GIGABYTE);
+ if (items < QF_MIN_GROUPS)
+ items = QF_MIN_GROUPS;
+ else if (items > QF_MAX_GROUPS)
+ items = QF_MAX_GROUPS;
+ if (!powerof2(items)) {
+ int x = items;
+ items = 4;
+ while (x>>1 != 1) {
+ x = x >> 1;
+ items = items << 1;
+ }
+ }
+ filesize += (items + 1) * sizeof(struct dqblk);
+ hfsmp->hfs_hotfile_maxblks = filesize / vcb->blockSize;
+ zonesize += filesize;
+
+ /*
+ * Round up entire zone to a bitmap block's worth.
+ * The extra space goes to the catalog file and hot file area.
+ */
+ temp = zonesize;
+ zonesize = roundup(zonesize, vcb->vcbVBMIOSize * 8 * vcb->blockSize);
+ temp = zonesize - temp; /* temp has extra space */
+ filesize += temp / 3;
+ hfsmp->hfs_catalog_maxblks += (temp - (temp / 3)) / vcb->blockSize;
+
+ /* Convert to allocation blocks. */
+ blk = zonesize / vcb->blockSize;
+
+ /* The default metadata zone location is at the start of volume. */
+ hfsmp->hfs_metazone_start = 1;
+ hfsmp->hfs_metazone_end = blk - 1;
+
+ /* The default hotfile area is at the end of the zone. */
+ hfsmp->hfs_hotfile_start = blk - (filesize / vcb->blockSize);
+ hfsmp->hfs_hotfile_end = hfsmp->hfs_metazone_end;
+ hfsmp->hfs_hotfile_freeblks = hfs_hotfile_freeblocks(hfsmp);
+#if 0
+ printf("HFS: metadata zone is %d to %d\n", hfsmp->hfs_metazone_start, hfsmp->hfs_metazone_end);
+ printf("HFS: hot file band is %d to %d\n", hfsmp->hfs_hotfile_start, hfsmp->hfs_hotfile_end);
+ printf("HFS: hot file band free blocks = %d\n", hfsmp->hfs_hotfile_freeblks);
+#endif
+ hfsmp->hfs_flags |= HFS_METADATA_ZONE;
+}
+
+
+static u_int32_t
+hfs_hotfile_freeblocks(struct hfsmount *hfsmp)
+{
+ ExtendedVCB *vcb = HFSTOVCB(hfsmp);
+ int freeblocks;
+
+ freeblocks = MetaZoneFreeBlocks(vcb);
+ /* Minus Extents overflow file reserve. */
+ freeblocks -=
+ hfsmp->hfs_overflow_maxblks - VTOF(vcb->extentsRefNum)->ff_blocks;
+ /* Minus catalog file reserve. */
+ freeblocks -=
+ hfsmp->hfs_catalog_maxblks - VTOF(vcb->catalogRefNum)->ff_blocks;
+ if (freeblocks < 0)
+ freeblocks = 0;
+
+ return MIN(freeblocks, hfsmp->hfs_hotfile_maxblks);
+}
+
+/*
+ * Determine if a file is a "virtual" metadata file.
+ * This includes journal and quota files.
+ */
+__private_extern__
+int
+hfs_virtualmetafile(struct cnode *cp)
+{
+ char * filename;
+
+
+ if (cp->c_parentcnid != kHFSRootFolderID)
+ return (0);
+
+ filename = cp->c_desc.cd_nameptr;
+ if (filename == NULL)
+ return (0);
+
+ if ((strcmp(filename, ".journal") == 0) ||
+ (strcmp(filename, ".journal_info_block") == 0) ||
+ (strcmp(filename, ".quota.user") == 0) ||
+ (strcmp(filename, ".quota.group") == 0) ||
+ (strcmp(filename, ".hotfiles.btree") == 0))
+ return (1);
+
+ return (0);
+}
+
projects / apple / xnu.git / blobdiff