X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/43866e378188c25dd1e2208016ab3cbeb086ae6c..c0fea4742e91338fffdcf79f86a7c1d5e2b97eb1:/bsd/hfs/hfs.h diff --git a/bsd/hfs/hfs.h b/bsd/hfs/hfs.h index 1cfb21d13..2d34f3f8a 100644 --- a/bsd/hfs/hfs.h +++ b/bsd/hfs/hfs.h @@ -1,24 +1,21 @@ /* - * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * - * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. + * 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. 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 + * This 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. + * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the + * License for the specific language governing rights and limitations + * under the License. * * @APPLE_LICENSE_HEADER_END@ */ @@ -26,18 +23,21 @@ #ifndef __HFS__ #define __HFS__ +#define HFS_SPARSE_DEV 1 + #include #ifdef KERNEL #ifdef __APPLE_API_PRIVATE #include -#include #include #include -#include #include #include #include +#include + +#include #include @@ -46,10 +46,7 @@ #include #include #include - - -struct uio; // This is more effective than #include in case KERNEL is undefined... -struct hfslockf; /* For advisory locking */ +#include /* * Just reported via MIG interface. @@ -60,23 +57,19 @@ struct hfslockf; /* For advisory locking */ #define HFS_MAX_DEFERED_ALLOC (1024*1024) +// 32 gigs is a "big" file (i.e. one that when deleted +// would touch enough data that we should break it into +// multiple separate transactions +#define HFS_BIGFILE_SIZE (32LL * 1024LL * 1024LL * 1024LL) + enum { kMDBSize = 512 }; /* Size of I/O transfer to read entire MDB */ enum { kMasterDirectoryBlock = 2 }; /* MDB offset on disk in 512-byte blocks */ enum { kMDBOffset = kMasterDirectoryBlock * 512 }; /* MDB offset on disk in bytes */ -enum { - kUnknownID = 0, - kRootParID = 1, - kRootDirID = 2 -}; +#define kRootDirID kHFSRootFolderID -enum { - kDataFork, - kRsrcFork, - kDirectory -}; /* number of locked buffer caches to hold for b-tree meta data */ #define kMaxLockedMetaBuffers 32 @@ -104,61 +97,26 @@ extern struct timezone gTimeZone; * superuser may continue to allocate blocks. */ #define HFS_MINFREE 1 -#define HFS_MAXRESERVE (u_int64_t)(250*1024*1024) +#define HFS_MAXRESERVE ((u_int64_t)(250*1024*1024)) -/* Internal Data structures*/ +/* + * The system distinguishes between the desirable low-disk + * notifiaction levels for root volumes and non-root volumes. + * The various thresholds are computed as a fraction of the + * volume size, all capped at a certain fixed level + */ + +#define HFS_ROOTLOWDISKTRIGGERFRACTION 5 +#define HFS_ROOTLOWDISKTRIGGERLEVEL ((u_int64_t)(250*1024*1024)) +#define HFS_ROOTLOWDISKSHUTOFFFRACTION 6 +#define HFS_ROOTLOWDISKSHUTOFFLEVEL ((u_int64_t)(375*1024*1024)) -struct vcb_t { - u_int16_t vcbSigWord; - int16_t vcbAtrb; - int16_t vcbFlags; - int16_t vcbspare; - u_int32_t vcbJinfoBlock; - - u_int32_t vcbCrDate; - u_int32_t vcbLsMod; - u_int32_t vcbVolBkUp; - - int32_t vcbFilCnt; - int32_t vcbDirCnt; - u_int32_t blockSize; /* size of allocation blocks */ - u_int32_t totalBlocks; /* total allocation blocks */ - u_int32_t freeBlocks; /* free allocation blocks */ - u_int32_t nextAllocation; /* start of next allocation search */ - int32_t vcbClpSiz; - u_int32_t vcbNxtCNID; - u_int32_t vcbCNIDGen; - int32_t vcbWrCnt; - - int32_t vcbFndrInfo[8]; - - u_int64_t encodingsBitmap; /* HFS Plus only */ - - u_int16_t vcbNmFls; /* HFS only */ - u_int16_t vcbNmRtDirs; /* HFS only */ - int16_t vcbVBMSt; /* HFS only */ - int16_t vcbAlBlSt; /* HFS only */ - - struct vnode * extentsRefNum; - struct vnode * catalogRefNum; - struct vnode * allocationsRefNum; - - u_int8_t vcbVN[256]; /* volume name in UTF-8 */ - u_int32_t volumeNameEncodingHint; - u_int32_t hfsPlusIOPosOffset; /* Disk block where HFS+ starts */ - u_int32_t vcbVBMIOSize; /* volume bitmap I/O size */ - - /* cache of largest known free extents */ - u_int32_t vcbFreeExtCnt; - HFSPlusExtentDescriptor vcbFreeExt[kMaxFreeExtents]; - - u_int32_t reserveBlocks; /* free block reserve */ - u_int32_t loanedBlocks; /* blocks on loan for delayed allocations */ - - u_int32_t localCreateDate; /* creation times for HFS+ volumes are in local time */ - simple_lock_data_t vcbSimpleLock; /* simple lock to allow concurrent access to vcb data */ -}; -typedef struct vcb_t ExtendedVCB; +#define HFS_LOWDISKTRIGGERFRACTION 1 +#define HFS_LOWDISKTRIGGERLEVEL ((u_int64_t)(50*1024*1024)) +#define HFS_LOWDISKSHUTOFFFRACTION 2 +#define HFS_LOWDISKSHUTOFFLEVEL ((u_int64_t)(75*1024*1024)) + +/* Internal Data structures*/ #define kHFS_DamagedVolume 0x1 /* This volume has errors, unmount dirty */ @@ -166,106 +124,179 @@ typedef struct vcb_t ExtendedVCB; /* XXX */ #define MARK_VOLUMEDAMAGED(fcb) -/* - * NOTE: The code relies on being able to cast an ExtendedVCB* to a vfsVCB* in order - * to gain access to the mount point pointer from a pointer - * to an ExtendedVCB. DO NOT INSERT OTHER FIELDS BEFORE THE vcb FIELD!! - * - * vcbFlags, vcbLsMod, vcbFilCnt, vcbDirCnt, vcbNxtCNID, etc - * are locked by the hfs_lock simple lock. - */ -typedef struct vfsVCB { - ExtendedVCB vcb_vcb; - struct hfsmount *vcb_hfsmp; /* Pointer to hfsmount structure */ -} vfsVCB_t; - - /* This structure describes the HFS specific mount structure data. */ typedef struct hfsmount { - u_int8_t hfs_fs_ronly; /* Whether this was mounted as read-initially */ - u_int8_t hfs_unknownpermissions; /* Whether this was mounted with MNT_UNKNOWNPERMISSIONS */ - u_int8_t hfs_media_writeable; - u_int8_t hfs_orphans_cleaned; - + u_int32_t hfs_flags; /* see below */ + /* Physical Description */ - u_long hfs_phys_block_count; /* Num of PHYSICAL blocks of volume */ - u_long hfs_phys_block_size; /* Always a multiple of 512 */ + u_long hfs_phys_block_size; /* Always a multiple of 512 */ + daddr64_t hfs_phys_block_count; /* Num of PHYSICAL blocks of volume */ + daddr64_t hfs_alt_id_sector; /* location of alternate VH/MDB */ /* Access to VFS and devices */ struct mount *hfs_mp; /* filesystem vfs structure */ struct vnode *hfs_devvp; /* block device mounted vnode */ - dev_t hfs_raw_dev; /* device mounted */ - struct netexport hfs_export; /* Export information */ - u_int32_t hfs_logBlockSize; /* Size of buffer cache buffer for I/O */ + struct vnode * hfs_extents_vp; + struct vnode * hfs_catalog_vp; + struct vnode * hfs_allocation_vp; + struct vnode * hfs_attribute_vp; + dev_t hfs_raw_dev; /* device mounted */ + u_int32_t hfs_logBlockSize; /* Size of buffer cache buffer for I/O */ /* Default values for HFS standard and non-init access */ - uid_t hfs_uid; /* uid to set as owner of the files */ - gid_t hfs_gid; /* gid to set as owner of the files */ - mode_t hfs_dir_mask; /* mask to and with directory protection bits */ - mode_t hfs_file_mask; /* mask to and with file protection bits */ - u_long hfs_encoding; /* Defualt encoding for non hfs+ volumes */ - - /* simple lock for shared meta renaming */ - simple_lock_data_t hfs_renamelock; - - /* HFS Specific */ - struct vfsVCB hfs_vcb; + uid_t hfs_uid; /* uid to set as owner of the files */ + gid_t hfs_gid; /* gid to set as owner of the files */ + mode_t hfs_dir_mask; /* mask to and with directory protection bits */ + mode_t hfs_file_mask; /* mask to and with file protection bits */ + u_long hfs_encoding; /* Defualt encoding for non hfs+ volumes */ + + /* Persistent fields (on disk, dynamic) */ + time_t hfs_mtime; /* file system last modification time */ + u_int32_t hfs_filecount; /* number of files in file system */ + u_int32_t hfs_dircount; /* number of directories in file system */ + u_int32_t freeBlocks; /* free allocation blocks */ + u_int32_t nextAllocation; /* start of next allocation search */ + u_int32_t vcbNxtCNID; /* next unused catalog node ID */ + u_int32_t vcbWrCnt; /* file system write count */ + u_int64_t encodingsBitmap; /* in-use encodings */ + u_int16_t vcbNmFls; /* HFS Only - root dir file count */ + u_int16_t vcbNmRtDirs; /* HFS Only - root dir directory count */ + + /* Persistent fields (on disk, static) */ + u_int16_t vcbSigWord; + int16_t vcbFlags; + u_int32_t vcbAtrb; + u_int32_t vcbJinfoBlock; + time_t hfs_itime; /* file system creation time */ + time_t hfs_btime; /* file system last backup time */ + u_int32_t blockSize; /* size of allocation blocks */ + u_int32_t totalBlocks; /* total allocation blocks */ + int32_t vcbClpSiz; + u_int32_t vcbFndrInfo[8]; + int16_t vcbVBMSt; /* HFS only */ + int16_t vcbAlBlSt; /* HFS only */ + + /* vcb stuff */ + u_int8_t vcbVN[256]; /* volume name in UTF-8 */ + u_int32_t volumeNameEncodingHint; + u_int32_t hfsPlusIOPosOffset; /* Disk block where HFS+ starts */ + u_int32_t vcbVBMIOSize; /* volume bitmap I/O size */ + + /* cache of largest known free extents */ + u_int32_t vcbFreeExtCnt; + HFSPlusExtentDescriptor vcbFreeExt[kMaxFreeExtents]; + + u_int32_t reserveBlocks; /* free block reserve */ + u_int32_t loanedBlocks; /* blocks on loan for delayed allocations */ + + u_int32_t localCreateDate; /* creation times for HFS+ volumes are in local time */ struct cat_desc hfs_privdir_desc; struct cat_attr hfs_privdir_attr; u_int32_t hfs_metadata_createdate; hfs_to_unicode_func_t hfs_get_unicode; unicode_to_hfs_func_t hfs_get_hfsname; + /* Quota variables: */ struct quotafile hfs_qfiles[MAXQUOTAS]; /* quota files */ - // XXXdbg + /* Journaling variables: */ void *jnl; // the journal for this volume (if one exists) struct vnode *jvp; // device where the journal lives (may be equal to devvp) u_int32_t jnl_start; // start block of the journal file (so we don't delete it) + u_int32_t jnl_size; u_int32_t hfs_jnlfileid; u_int32_t hfs_jnlinfoblkid; - volatile int readers; - volatile int blocker; + lck_rw_t hfs_global_lock; + u_int32_t hfs_global_lock_nesting; + + /* Notification variables: */ + unsigned long hfs_notification_conditions; + u_int32_t hfs_freespace_notify_warninglimit; + u_int32_t hfs_freespace_notify_desiredlevel; + + /* time mounted and last mounted mod time "snapshot" */ + time_t hfs_mount_time; + time_t hfs_last_mounted_mtime; + + /* Metadata allocation zone variables: */ + u_int32_t hfs_metazone_start; + u_int32_t hfs_metazone_end; + u_int32_t hfs_hotfile_start; + u_int32_t hfs_hotfile_end; + int hfs_hotfile_freeblks; + int hfs_hotfile_maxblks; + int hfs_overflow_maxblks; + int hfs_catalog_maxblks; + + /* Hot File Clustering variables: */ + lck_mtx_t hfc_mutex; /* serialize hot file stages */ + enum hfc_stage hfc_stage; /* what are we up to... */ + time_t hfc_timebase; /* recording period start time */ + time_t hfc_timeout; /* recording period stop time */ + void * hfc_recdata; /* recording data (opaque) */ + int hfc_maxfiles; /* maximum files to track */ + struct vnode * hfc_filevp; + +#ifdef HFS_SPARSE_DEV + /* Sparse device variables: */ + struct vnode * hfs_backingfs_rootvp; + int hfs_sparsebandblks; +#endif + size_t hfs_max_inline_attrsize; + + lck_mtx_t hfs_mutex; /* protects access to hfsmount data */ + void *hfs_freezing_proc; /* who froze the fs */ + lck_rw_t hfs_insync; /* protects sync/freeze interaction */ + + /* Resize variables: */ + u_int32_t hfs_resize_filesmoved; + u_int32_t hfs_resize_totalfiles; } hfsmount_t; -#define hfs_private_metadata_dir hfs_privdir_desc.cd_cnid - -#define hfs_global_shared_lock_acquire(hfsmp) \ - do { \ - if (hfsmp->blocker) { \ - tsleep((caddr_t)&hfsmp->blocker, PRIBIO, "journal_blocker", 0); \ - continue; \ - } \ - hfsmp->readers++; \ - break; \ - } while (1) - -#define hfs_global_shared_lock_release(hfsmp) \ - do { \ - hfsmp->readers--; \ - if (hfsmp->readers == 0) { \ - wakeup((caddr_t)&hfsmp->readers); \ - } \ - } while (0) - -#define hfs_global_exclusive_lock_acquire(hfsmp) \ - do { \ - if (hfsmp->blocker) { \ - tsleep((caddr_t)&hfsmp->blocker, PRIBIO, "journal_blocker", 0); \ - continue; \ - } \ - if (hfsmp->readers != 0) { \ - tsleep((caddr_t)&hfsmp->readers, PRIBIO, "journal_enable/disble", 0); \ - continue; \ - } \ - hfsmp->blocker = 1; \ - break; \ - } while (1) - -#define hfs_global_exclusive_lock_release(hfsmp) \ - hfsmp->blocker = 0; \ - wakeup((caddr_t)&hfsmp->blocker) +typedef hfsmount_t ExtendedVCB; + +/* Aliases for legacy field names */ +#define vcbCrDate hfs_itime +#define vcbLsMod hfs_mtime +#define vcbVolBkUp hfs_btime +#define extentsRefNum hfs_extents_vp +#define catalogRefNum hfs_catalog_vp +#define allocationsRefNum hfs_allocation_vp +#define vcbFilCnt hfs_filecount +#define vcbDirCnt hfs_dircount + + +/* HFS mount point flags */ +#define HFS_READ_ONLY 0x001 +#define HFS_UNKNOWN_PERMS 0x002 +#define HFS_WRITEABLE_MEDIA 0x004 +#define HFS_CLEANED_ORPHANS 0x008 +#define HFS_X 0x010 +#define HFS_CASE_SENSITIVE 0x020 +#define HFS_STANDARD 0x040 +#define HFS_METADATA_ZONE 0x080 +#define HFS_FRAGMENTED_FREESPACE 0x100 +#define HFS_NEED_JNL_RESET 0x200 +#define HFS_HAS_SPARSE_DEVICE 0x400 +#define HFS_RESIZE_IN_PROGRESS 0x800 + + +#define HFS_MOUNT_LOCK(hfsmp, metadata) \ + { \ + if ((metadata) && 1) \ + lck_mtx_lock(&(hfsmp)->hfs_mutex); \ + } \ + +#define HFS_MOUNT_UNLOCK(hfsmp, metadata) \ + { \ + if ((metadata) && 1) \ + lck_mtx_unlock(&(hfsmp)->hfs_mutex); \ + } \ + +#define hfs_global_exclusive_lock_acquire(hfsmp) lck_rw_lock_exclusive(&(hfsmp)->hfs_global_lock) +#define hfs_global_exclusive_lock_release(hfsmp) lck_rw_done(&(hfsmp)->hfs_global_lock) + #define MAXHFSVNODELEN 31 @@ -276,88 +307,21 @@ typedef struct filefork FCB; #define MAKE_INODE_NAME(name,linkno) \ (void) sprintf((name), "%s%d", HFS_INODE_PREFIX, (linkno)) -/* - * Write check macro - */ -#define WRITE_CK(VNODE, FUNC_NAME) { \ - if ((VNODE)->v_mount->mnt_flag & MNT_RDONLY) { \ - DBG_ERR(("%s: ATTEMPT TO WRITE A READONLY VOLUME\n", \ - FUNC_NAME)); \ - return(EROFS); \ - } \ -} - -/* structure to hold a "." or ".." directory entry (12 bytes) */ -typedef struct hfsdotentry { - u_int32_t d_fileno; /* unique file number */ - u_int16_t d_reclen; /* length of this structure */ - u_int8_t d_type; /* dirent file type */ - u_int8_t d_namelen; /* len of filename */ - char d_name[4]; /* "." or ".." */ -} hfsdotentry; +#define HFS_INODE_PREFIX_LEN 5 + #define HFS_AVERAGE_NAME_SIZE 22 #define AVERAGE_HFSDIRENTRY_SIZE (8+HFS_AVERAGE_NAME_SIZE+4) -#define MAX_HFSDIRENTRY_SIZE sizeof(struct dirent) - -#define DIRENTRY_SIZE(namlen) \ - ((sizeof(struct dirent) - (NAME_MAX+1)) + (((namlen)+1 + 3) &~ 3)) - -enum { - kCatalogFolderNode = 1, - kCatalogFileNode = 2 -}; - -/* - * CatalogNodeData has same layout as the on-disk HFS Plus file/dir records. - * Classic hfs file/dir records are converted to match this layout. - * - * The cnd_extra padding allows big hfs plus thread records (520 bytes max) - * to be read onto this stucture during a cnid lookup. - * - */ -struct CatalogNodeData { - int16_t cnd_type; - u_int16_t cnd_flags; - u_int32_t cnd_valence; /* dirs only */ - u_int32_t cnd_nodeID; - u_int32_t cnd_createDate; - u_int32_t cnd_contentModDate; - u_int32_t cnd_attributeModDate; - u_int32_t cnd_accessDate; - u_int32_t cnd_backupDate; - u_int32_t cnd_ownerID; - u_int32_t cnd_groupID; - u_int8_t cnd_adminFlags; /* super-user changeable flags */ - u_int8_t cnd_ownerFlags; /* owner changeable flags */ - u_int16_t cnd_mode; /* file type + permission bits */ - union { - u_int32_t cndu_iNodeNum; /* indirect links only */ - u_int32_t cndu_linkCount; /* indirect nodes only */ - u_int32_t cndu_rawDevice; /* special files (FBLK and FCHR) only */ - } cnd_un; - u_int8_t cnd_finderInfo[32]; - u_int32_t cnd_textEncoding; - u_int32_t cnd_reserved; - HFSPlusForkData cnd_datafork; - HFSPlusForkData cnd_rsrcfork; - u_int32_t cnd_iNodeNumCopy; - u_int32_t cnd_linkCNID; /* for hard links only */ - u_int8_t cnd_extra[264]; /* make struct at least 520 bytes long */ -}; -typedef struct CatalogNodeData CatalogNodeData; - -#define cnd_iNodeNum cnd_un.cndu_iNodeNum -#define cnd_linkCount cnd_un.cndu_linkCount -#define cnd_rawDevice cnd_un.cndu_rawDevice +#define STD_DIRENT_LEN(namlen) \ + ((sizeof(struct dirent) - (NAME_MAX+1)) + (((namlen)+1 + 3) &~ 3)) +#define EXT_DIRENT_LEN(namlen) \ + ((sizeof(struct direntry) + (namlen) - (MAXPATHLEN-1) + 3) & ~3) enum { kHFSPlusMaxFileNameBytes = kHFSPlusMaxFileNameChars * 3 }; -enum { kdirentMaxNameBytes = NAME_MAX }; - /* macro to determine if hfs or hfsplus */ #define ISHFSPLUS(VCB) ((VCB)->vcbSigWord == kHFSPlusSigWord) @@ -367,25 +331,28 @@ enum { kdirentMaxNameBytes = NAME_MAX }; /* * Various ways to acquire a VFS mount point pointer: */ -#define VTOVFS(VP) ((VP)->v_mount) +#define VTOVFS(VP) vnode_mount((VP)) #define HFSTOVFS(HFSMP) ((HFSMP)->hfs_mp) -#define VCBTOVFS(VCB) (((struct vfsVCB *)(VCB))->vcb_hfsmp->hfs_mp) +#define VCBTOVFS(VCB) HFSTOVFS(VCB) /* * Various ways to acquire an HFS mount point pointer: */ -#define VTOHFS(VP) ((struct hfsmount *)((VP)->v_mount->mnt_data)) -#define VFSTOHFS(MP) ((struct hfsmount *)(MP)->mnt_data) -#define VCBTOHFS(VCB) (((struct vfsVCB *)(VCB))->vcb_hfsmp) -#define FCBTOHFS(FCB) ((struct hfsmount *)(FCB)->ff_cp->c_vp->v_mount->mnt_data) +#define VTOHFS(VP) ((struct hfsmount *)vfs_fsprivate(vnode_mount((VP)))) +#define VFSTOHFS(MP) ((struct hfsmount *)vfs_fsprivate((MP))) +#define VCBTOHFS(VCB) (VCB) +#define FCBTOHFS(FCB) ((struct hfsmount *)vfs_fsprivate(vnode_mount((FCB)->ff_cp->c_vp))) /* - * Various ways to acquire a VCB pointer: + * Various ways to acquire a VCB (legacy) pointer: */ -#define VTOVCB(VP) (&(((struct hfsmount *)((VP)->v_mount->mnt_data))->hfs_vcb.vcb_vcb)) -#define VFSTOVCB(MP) (&(((struct hfsmount *)(MP)->mnt_data)->hfs_vcb.vcb_vcb)) -#define HFSTOVCB(HFSMP) (&(HFSMP)->hfs_vcb.vcb_vcb) -#define FCBTOVCB(FCB) (&(((struct hfsmount *)((FCB)->ff_cp->c_vp->v_mount->mnt_data))->hfs_vcb.vcb_vcb)) +#define VTOVCB(VP) VTOHFS(VP) +#define VFSTOVCB(MP) VFSTOHFS(MP) +#define HFSTOVCB(HFSMP) (HFSMP) +#define FCBTOVCB(FCB) FCBTOHFS(FCB) + + +#define HFS_KNOTE(vp, hint) KNOTE(&VTOC(vp)->c_knotes, (hint)) #define E_NONE 0 @@ -400,6 +367,17 @@ enum { kdirentMaxNameBytes = NAME_MAX }; #define HFS_ALT_SECTOR(blksize, blkcnt) (((blkcnt) - 1) - (512 / (blksize))) #define HFS_ALT_OFFSET(blksize) ((blksize) > 1024 ? (blksize) - 1024 : 0) + +/* + * HFS specific fcntl()'s + */ +#define HFS_BULKACCESS (FCNTL_FS_SPECIFIC_BASE + 0x00001) +#define HFS_GET_MOUNT_TIME (FCNTL_FS_SPECIFIC_BASE + 0x00002) +#define HFS_GET_LAST_MTIME (FCNTL_FS_SPECIFIC_BASE + 0x00003) +#define HFS_GET_BOOT_INFO (FCNTL_FS_SPECIFIC_BASE + 0x00004) +#define HFS_SET_BOOT_INFO (FCNTL_FS_SPECIFIC_BASE + 0x00005) + + /* * This is the straight GMT conversion constant: * 00:00:00 January 1, 1970 - 00:00:00 January 1, 1904 @@ -408,26 +386,18 @@ enum { kdirentMaxNameBytes = NAME_MAX }; #define MAC_GMT_FACTOR 2082844800UL -u_int32_t to_bsd_time(u_int32_t hfs_time); -u_int32_t to_hfs_time(u_int32_t bsd_time); +time_t to_bsd_time(u_int32_t hfs_time); +u_int32_t to_hfs_time(time_t bsd_time); -int hfs_flushfiles(struct mount *mp, int flags, struct proc *p); int hfs_flushvolumeheader(struct hfsmount *hfsmp, int waitfor, int altflush); #define HFS_ALTFLUSH 1 -short hfsUnmount(struct hfsmount *hfsmp, struct proc *p); - - -extern int hfs_getcnode(struct hfsmount *hfsmp, cnid_t cnid, struct cat_desc *descp, - int wantrsrc, struct cat_attr *attrp, struct cat_fork *forkp, - struct vnode **vpp); +extern int hfsUnmount(struct hfsmount *hfsmp, struct proc *p); -extern int hfs_getnewvnode(struct hfsmount *hfsmp, struct cnode *cp, +extern int hfs_getnewvnode(struct hfsmount *hfsmp, struct vnode *dvp, struct componentname *cnp, struct cat_desc *descp, int wantrsrc, struct cat_attr *attrp, struct cat_fork *forkp, struct vnode **vpp); -extern int hfs_metafilelocking(struct hfsmount *hfsmp, u_long fileID, u_int flags, struct proc *p); - extern u_int32_t hfs_freeblks(struct hfsmount * hfsmp, int wantreserve); extern void hfs_remove_orphans(struct hfsmount *); @@ -457,13 +427,13 @@ unsigned long BestBlockSizeFit(unsigned long allocationBlockSize, OSErr hfs_MountHFSVolume(struct hfsmount *hfsmp, HFSMasterDirectoryBlock *mdb, struct proc *p); OSErr hfs_MountHFSPlusVolume(struct hfsmount *hfsmp, HFSPlusVolumeHeader *vhp, - off_t embeddedOffset, u_int64_t disksize, struct proc *p, void *args); + off_t embeddedOffset, u_int64_t disksize, struct proc *p, void *args, kauth_cred_t cred); extern int hfs_early_journal_init(struct hfsmount *hfsmp, HFSPlusVolumeHeader *vhp, - void *_args, int embeddedOffset, int mdb_offset, + void *_args, off_t embeddedOffset, daddr64_t mdb_offset, HFSMasterDirectoryBlock *mdbp, struct ucred *cred); -extern u_long GetFileInfo(ExtendedVCB *vcb, u_int32_t dirid, char *name, - struct cat_attr *fattr, struct cat_fork *forkinfo); +extern u_long GetFileInfo(ExtendedVCB *vcb, u_int32_t dirid, const char *name, + struct cat_attr *fattr, struct cat_fork *forkinfo); int hfs_getconverter(u_int32_t encoding, hfs_to_unicode_func_t *get_unicode, unicode_to_hfs_func_t *get_hfsname); @@ -494,6 +464,52 @@ extern void replace_desc(struct cnode *cp, struct cat_desc *cdp); extern int hfs_namecmp(const char *, size_t, const char *, size_t); +extern int hfs_virtualmetafile(struct cnode *); + +void hfs_generate_volume_notifications(struct hfsmount *hfsmp); + +__private_extern__ u_int32_t hfs_getencodingbias(void); +__private_extern__ void hfs_setencodingbias(u_int32_t bias); + +extern int hfs_vgetrsrc(struct hfsmount *hfsmp, struct vnode *vp, + struct vnode **rvpp, struct proc *p); + +extern int hfs_update(struct vnode *, int); + +extern int hfs_truncate(struct vnode *, off_t, int, int, vfs_context_t); + +extern int hfs_fsync(struct vnode *, int, int, struct proc *); + +extern int hfs_access(struct vnode *, mode_t, struct ucred *, struct proc *); + +extern int hfs_vget(struct hfsmount *, cnid_t, struct vnode **, int); + +extern int hfs_bmap(struct vnode *, daddr_t, struct vnode **, daddr64_t *, int *); + +extern int hfs_removeallattr(struct hfsmount *hfsmp, u_int32_t fileid); + +__private_extern__ int hfs_start_transaction(struct hfsmount *hfsmp); +__private_extern__ int hfs_end_transaction(struct hfsmount *hfsmp); + +extern int hfs_setextendedsecurity(struct hfsmount *hfsmp, int state); +extern void hfs_checkextendedsecurity(struct hfsmount *hfsmp); + +extern int hfs_extendfs(struct hfsmount *, u_int64_t, vfs_context_t); +extern int hfs_truncatefs(struct hfsmount *, u_int64_t, vfs_context_t); +extern int hfs_resize_progress(struct hfsmount *, u_int32_t *); + +extern int hfs_isallocated(struct hfsmount *, u_long, u_long); + + +/* HFS System file locking */ +#define SFL_CATALOG 0x0001 +#define SFL_EXTENTS 0x0002 +#define SFL_BITMAP 0x0004 +#define SFL_ATTRIBUTE 0x0008 +#define SFL_VALIDMASK (SFL_CATALOG | SFL_EXTENTS | SFL_BITMAP | SFL_ATTRIBUTE) + +extern int hfs_systemfile_lock(struct hfsmount *, int, enum hfslocktype); +extern void hfs_systemfile_unlock(struct hfsmount *, int); #endif /* __APPLE_API_PRIVATE */ #endif /* KERNEL */