/* * Copyright (c) 2000-2007 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * 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. * * 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_OSREFERENCE_LICENSE_HEADER_END@ */ #ifndef __HFS__ #define __HFS__ #define HFS_SPARSE_DEV 1 #ifdef DEBUG #define HFS_CHECK_LOCK_ORDER 1 #endif #include #ifdef KERNEL #ifdef __APPLE_API_PRIVATE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * Just reported via MIG interface. */ #define VERSION_STRING "hfs-2 (4-12-99)" #define HFS_LINK_MAX 32767 #define HFS_MAX_DEFERED_ALLOC (1024*1024) // 400 megs 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 (400LL * 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 */ #define kRootDirID kHFSRootFolderID /* number of locked buffer caches to hold for b-tree meta data */ #define kMaxLockedMetaBuffers 32 extern struct timezone gTimeZone; /* How many free extents to cache per volume */ #define kMaxFreeExtents 10 /* * HFS_MINFREE gives the minimum acceptable percentage * of file system blocks which may be free (but this * minimum will never exceed HFS_MAXRESERVE bytes). If * the free block count drops below this level only the * superuser may continue to allocate blocks. */ #define HFS_MINFREE 1 #define HFS_MAXRESERVE ((u_int64_t)(250*1024*1024)) /* * 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)) #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*/ /* This structure describes the HFS specific mount structure data. */ typedef struct hfsmount { u_int32_t hfs_flags; /* see below */ /* Physical Description */ u_int32_t hfs_logical_block_size; /* Logical block size of the disk as reported by ioctl(DKIOCGETBLOCKSIZE), always a multiple of 512 */ daddr64_t hfs_logical_block_count; /* Number of logical blocks on the disk */ daddr64_t hfs_alt_id_sector; /* location of alternate VH/MDB */ u_int32_t hfs_physical_block_size; /* Physical block size of the disk as reported by ioctl(DKIOCGETPHYSICALBLOCKSIZE) */ u_int32_t hfs_log_per_phys; /* Number of logical blocks per physical block size */ /* Access to VFS and devices */ struct mount *hfs_mp; /* filesystem vfs structure */ struct vnode *hfs_devvp; /* block device mounted vnode */ struct vnode * hfs_extents_vp; struct vnode * hfs_catalog_vp; struct vnode * hfs_allocation_vp; struct vnode * hfs_attribute_vp; struct vnode * hfs_startup_vp; struct vnode * hfs_attrdata_vp; /* pseudo file */ struct cnode * hfs_extents_cp; struct cnode * hfs_catalog_cp; struct cnode * hfs_allocation_cp; struct cnode * hfs_attribute_cp; struct cnode * hfs_startup_cp; 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; /* Default 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 - protected by catalog lock */ 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; /* Runtime flag to indicate if volume is dirty/clean */ 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 */ u_int32_t allocLimit; /* Do not allocate this block or beyond */ /* * NOTE: When resizing a volume to make it smaller, allocLimit is set to the allocation * block number which will contain the new alternate volume header. At all other times, * allocLimit is set to totalBlocks. The allocation code uses allocLimit instead of * totalBlocks to limit which blocks may be allocated, so that during a resize, we don't * put new content into the blocks we're trying to truncate away. */ 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 */ /* * HFS+ Private system directories (two). Any access * (besides looking at the cd_cnid) requires holding * the Catalog File lock. */ struct cat_desc hfs_private_desc[2]; struct cat_attr hfs_private_attr[2]; 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 */ /* 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; 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; u_int32_t hfs_last_backingstatfs; 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 */ void *hfs_downgrading_proc; /* process who's downgrading to rdonly */ lck_rw_t hfs_insync; /* protects sync/freeze interaction */ /* Resize variables: */ u_int32_t hfs_resize_filesmoved; u_int32_t hfs_resize_totalfiles; /* * About the sync counters: * hfs_sync_scheduled keeps track whether a timer was scheduled but we * haven't started processing the callback (i.e. we * haven't begun the flush). This will be non-zero * even if the callback has been invoked, before we * start the flush. * hfs_sync_incomplete keeps track of the number of callbacks that have * not completed yet (including callbacks not yet * invoked). We cannot safely unmount until this * drops to zero. * * In both cases, we use counters, not flags, so that we can avoid * taking locks. */ int32_t hfs_sync_scheduled; int32_t hfs_sync_incomplete; u_int64_t hfs_last_sync_request_time; u_int64_t hfs_last_sync_time; uint32_t hfs_active_threads; thread_call_t hfs_syncer; // removeable devices get sync'ed by this guy } hfsmount_t; #define HFS_META_DELAY (100) #define HFS_MILLISEC_SCALE (1000*1000) typedef hfsmount_t ExtendedVCB; /* Aliases for legacy (Mac OS 9) 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 /* Inline functions to set/reset vcbFlags. Upper 8 bits indicate if the volume * header/VCB is clean/dirty --- if set, volume header is dirty, and * if clear, volume header is clean. This value is checked to determine * if the in-memory copy of volume header should be flushed to the disk * or not. */ /* Set runtime flag to indicate that volume is dirty */ static __inline__ void MarkVCBDirty(ExtendedVCB *vcb) { vcb->vcbFlags |= 0xFF00; } /* Clear runtime flag to indicate that volume is dirty */ static __inline__ void MarkVCBClean(ExtendedVCB *vcb) { vcb->vcbFlags &= 0x00FF; } /* Check runtime flag to determine if the volume is dirty or not */ static __inline__ Boolean IsVCBDirty(ExtendedVCB *vcb) { return (vcb->vcbFlags & 0xFF00 ? true : false); } /* * There are two private directories in HFS+. * * One contains inodes for files that are hardlinked or open/unlinked. * The other contains inodes for directories that are hardlinked. */ enum privdirtype {FILE_HARDLINKS, DIR_HARDLINKS}; /* HFS mount point flags */ #define HFS_READ_ONLY 0x00001 #define HFS_UNKNOWN_PERMS 0x00002 #define HFS_WRITEABLE_MEDIA 0x00004 #define HFS_CLEANED_ORPHANS 0x00008 #define HFS_X 0x00010 #define HFS_CASE_SENSITIVE 0x00020 #define HFS_STANDARD 0x00040 #define HFS_METADATA_ZONE 0x00080 #define HFS_FRAGMENTED_FREESPACE 0x00100 #define HFS_NEED_JNL_RESET 0x00200 #define HFS_HAS_SPARSE_DEVICE 0x00400 #define HFS_RESIZE_IN_PROGRESS 0x00800 #define HFS_QUOTAS 0x01000 #define HFS_CREATING_BTREE 0x02000 /* When set, do not update nextAllocation in the mount structure */ #define HFS_SKIP_UPDATE_NEXT_ALLOCATION 0x04000 #define HFS_XATTR_EXTENTS 0x08000 #define HFS_FOLDERCOUNT 0x10000 /* When set, the file system exists on a virtual device, like disk image */ #define HFS_VIRTUAL_DEVICE 0x20000 /* When set, we're in hfs_changefs, so hfs_sync should do nothing. */ #define HFS_IN_CHANGEFS 0x40000 /* When set, we are in process of downgrading or have downgraded to read-only, * so hfs_start_transaction should return EROFS. */ #define HFS_RDONLY_DOWNGRADE 0x80000 /* Macro to update next allocation block in the HFS mount structure. If * the HFS_SKIP_UPDATE_NEXT_ALLOCATION is set, do not update * nextAllocation block. */ #define HFS_UPDATE_NEXT_ALLOCATION(hfsmp, new_nextAllocation) \ { \ if ((hfsmp->hfs_flags & HFS_SKIP_UPDATE_NEXT_ALLOCATION) == 0)\ hfsmp->nextAllocation = new_nextAllocation; \ } \ #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_unlock_exclusive(&(hfsmp)->hfs_global_lock) /* Macro for incrementing and decrementing the folder count in a cnode * attribute only if the HFS_FOLDERCOUNT bit is set in the mount flags * and kHFSHasFolderCount bit is set in the cnode flags. Currently these * bits are only set for case sensitive HFS+ volumes. */ #define INC_FOLDERCOUNT(hfsmp, cattr) \ if ((hfsmp->hfs_flags & HFS_FOLDERCOUNT) && \ (cattr.ca_recflags & kHFSHasFolderCountMask)) { \ cattr.ca_dircount++; \ } \ #define DEC_FOLDERCOUNT(hfsmp, cattr) \ if ((hfsmp->hfs_flags & HFS_FOLDERCOUNT) && \ (cattr.ca_recflags & kHFSHasFolderCountMask) && \ (cattr.ca_dircount > 0)) { \ cattr.ca_dircount--; \ } \ typedef struct filefork FCB; /* * Macros for creating item names for our special/private directories. */ #define MAKE_INODE_NAME(name, size, linkno) \ (void) snprintf((name), size, "%s%d", HFS_INODE_PREFIX, (linkno)) #define HFS_INODE_PREFIX_LEN 5 #define MAKE_DIRINODE_NAME(name, size, linkno) \ (void) snprintf((name), size, "%s%d", HFS_DIRINODE_PREFIX, (linkno)) #define HFS_DIRINODE_PREFIX_LEN 4 #define MAKE_DELETED_NAME(NAME, size, FID) \ (void) snprintf((NAME), size, "%s%d", HFS_DELETE_PREFIX, (FID)) #define HFS_DELETE_PREFIX_LEN 4 #define HFS_AVERAGE_NAME_SIZE 22 #define AVERAGE_HFSDIRENTRY_SIZE (8+HFS_AVERAGE_NAME_SIZE+4) #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 }; /* macro to determine if hfs or hfsplus */ #define ISHFSPLUS(VCB) ((VCB)->vcbSigWord == kHFSPlusSigWord) #define ISHFS(VCB) ((VCB)->vcbSigWord == kHFSSigWord) /* * Various ways to acquire a VFS mount point pointer: */ #define VTOVFS(VP) vnode_mount((VP)) #define HFSTOVFS(HFSMP) ((HFSMP)->hfs_mp) #define VCBTOVFS(VCB) HFSTOVFS(VCB) /* * Various ways to acquire an HFS mount point pointer: */ #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 (legacy) pointer: */ #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 #define kHFSBlockSize 512 /* * Macros for getting the MDB/VH sector and offset */ #define HFS_PRI_SECTOR(blksize) (1024 / (blksize)) #define HFS_PRI_OFFSET(blksize) ((blksize) > 1024 ? 1024 : 0) #define HFS_ALT_SECTOR(blksize, blkcnt) (((blkcnt) - 1) - (512 / (blksize))) #define HFS_ALT_OFFSET(blksize) ((blksize) > 1024 ? (blksize) - 1024 : 0) /* Convert the logical sector number to be aligned on physical block size boundary. * We are assuming the partition is a multiple of physical block size. */ #define HFS_PHYSBLK_ROUNDDOWN(sector_num, log_per_phys) ((sector_num / log_per_phys) * log_per_phys) /* * 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) #define HFS_EXT_BULKACCESS (FCNTL_FS_SPECIFIC_BASE + 0x00006) /* * This is the straight GMT conversion constant: * 00:00:00 January 1, 1970 - 00:00:00 January 1, 1904 * (3600 * 24 * ((365 * (1970 - 1904)) + (((1970 - 1904) / 4) + 1))) */ #define MAC_GMT_FACTOR 2082844800UL /***************************************************************************** FUNCTION PROTOTYPES ******************************************************************************/ /***************************************************************************** hfs_vnop_xxx functions from different files ******************************************************************************/ int hfs_vnop_readdirattr(struct vnop_readdirattr_args *); /* in hfs_attrlist.c */ int hfs_vnop_inactive(struct vnop_inactive_args *); /* in hfs_cnode.c */ int hfs_vnop_reclaim(struct vnop_reclaim_args *); /* in hfs_cnode.c */ int hfs_vnop_link(struct vnop_link_args *); /* in hfs_link.c */ int hfs_vnop_lookup(struct vnop_lookup_args *); /* in hfs_lookup.c */ int hfs_vnop_search(struct vnop_searchfs_args *); /* in hfs_search.c */ int hfs_vnop_read(struct vnop_read_args *); /* in hfs_readwrite.c */ int hfs_vnop_write(struct vnop_write_args *); /* in hfs_readwrite.c */ int hfs_vnop_ioctl(struct vnop_ioctl_args *); /* in hfs_readwrite.c */ int hfs_vnop_select(struct vnop_select_args *); /* in hfs_readwrite.c */ int hfs_vnop_strategy(struct vnop_strategy_args *); /* in hfs_readwrite.c */ int hfs_vnop_allocate(struct vnop_allocate_args *); /* in hfs_readwrite.c */ int hfs_vnop_pagein(struct vnop_pagein_args *); /* in hfs_readwrite.c */ int hfs_vnop_pageout(struct vnop_pageout_args *); /* in hfs_readwrite.c */ int hfs_vnop_bwrite(struct vnop_bwrite_args *); /* in hfs_readwrite.c */ int hfs_vnop_blktooff(struct vnop_blktooff_args *); /* in hfs_readwrite.c */ int hfs_vnop_offtoblk(struct vnop_offtoblk_args *); /* in hfs_readwrite.c */ int hfs_vnop_blockmap(struct vnop_blockmap_args *); /* in hfs_readwrite.c */ int hfs_vnop_getxattr(struct vnop_getxattr_args *); /* in hfs_xattr.c */ int hfs_vnop_setxattr(struct vnop_setxattr_args *); /* in hfs_xattr.c */ int hfs_vnop_removexattr(struct vnop_removexattr_args *); /* in hfs_xattr.c */ int hfs_vnop_listxattr(struct vnop_listxattr_args *); /* in hfs_xattr.c */ #if NAMEDSTREAMS extern int hfs_vnop_getnamedstream(struct vnop_getnamedstream_args*); extern int hfs_vnop_makenamedstream(struct vnop_makenamedstream_args*); extern int hfs_vnop_removenamedstream(struct vnop_removenamedstream_args*); #endif /***************************************************************************** Functions from MacOSStubs.c ******************************************************************************/ time_t to_bsd_time(u_int32_t hfs_time); u_int32_t to_hfs_time(time_t bsd_time); /***************************************************************************** Functions from hfs_encodinghint.c ******************************************************************************/ u_int32_t hfs_pickencoding(const u_int16_t *src, int len); u_int32_t hfs_getencodingbias(void); void hfs_setencodingbias(u_int32_t bias); /***************************************************************************** Functions from hfs_encodings.c ******************************************************************************/ void hfs_converterinit(void); int hfs_getconverter(u_int32_t encoding, hfs_to_unicode_func_t *get_unicode, unicode_to_hfs_func_t *get_hfsname); int hfs_relconverter(u_int32_t encoding); int hfs_to_utf8(ExtendedVCB *vcb, const Str31 hfs_str, ByteCount maxDstLen, ByteCount *actualDstLen, unsigned char* dstStr); int utf8_to_hfs(ExtendedVCB *vcb, ByteCount srcLen, const unsigned char* srcStr, Str31 dstStr); int mac_roman_to_utf8(const Str31 hfs_str, ByteCount maxDstLen, ByteCount *actualDstLen, unsigned char* dstStr); int utf8_to_mac_roman(ByteCount srcLen, const unsigned char* srcStr, Str31 dstStr); int mac_roman_to_unicode(const Str31 hfs_str, UniChar *uni_str, u_int32_t maxCharLen, u_int32_t *usedCharLen); int unicode_to_hfs(ExtendedVCB *vcb, ByteCount srcLen, u_int16_t* srcStr, Str31 dstStr, int retry); /***************************************************************************** Functions from hfs_notifications.c ******************************************************************************/ void hfs_generate_volume_notifications(struct hfsmount *hfsmp); /***************************************************************************** Functions from hfs_readwrite.c ******************************************************************************/ extern int hfs_relocate(struct vnode *, u_int32_t, kauth_cred_t, struct proc *); extern int hfs_truncate(struct vnode *, off_t, int, int, vfs_context_t); extern int hfs_bmap(struct vnode *, daddr_t, struct vnode **, daddr64_t *, unsigned int *); extern int hfs_fsync(struct vnode *, int, int, struct proc *); extern int hfs_access(struct vnode *, mode_t, kauth_cred_t, struct proc *); extern int hfs_removeallattr(struct hfsmount *hfsmp, u_int32_t fileid); extern int hfs_set_volxattr(struct hfsmount *hfsmp, unsigned int xattrtype, int state); extern void hfs_check_volxattr(struct hfsmount *hfsmp, unsigned int xattrtype); extern int hfs_isallocated(struct hfsmount *, u_long, u_long); /***************************************************************************** Functions from hfs_vfsops.c ******************************************************************************/ int hfs_mountroot(mount_t mp, vnode_t rvp, vfs_context_t context); /* used as a callback by the journaling code */ extern void hfs_sync_metadata(void *arg); extern int hfs_vget(struct hfsmount *, cnid_t, struct vnode **, int); extern void hfs_setencodingbits(struct hfsmount *hfsmp, u_int32_t encoding); enum volop {VOL_UPDATE, VOL_MKDIR, VOL_RMDIR, VOL_MKFILE, VOL_RMFILE}; extern int hfs_volupdate(struct hfsmount *hfsmp, enum volop op, int inroot); int hfs_flushvolumeheader(struct hfsmount *hfsmp, int waitfor, int altflush); #define HFS_ALTFLUSH 1 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 *); /* If a runtime corruption is detected, mark the volume inconsistent * bit in the volume attributes. */ void hfs_mark_volume_inconsistent(struct hfsmount *hfsmp); /***************************************************************************** Functions from hfs_vfsutils.c ******************************************************************************/ unsigned long BestBlockSizeFit(unsigned long allocationBlockSize, unsigned long blockSizeLimit, unsigned long baseMultiple); 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, kauth_cred_t cred); extern int hfsUnmount(struct hfsmount *hfsmp, struct proc *p); extern int overflow_extents(struct filefork *fp); extern int hfs_owner_rights(struct hfsmount *hfsmp, uid_t cnode_uid, kauth_cred_t cred, struct proc *p, int invokesuperuserstatus); /* HFS System file locking */ #define SFL_CATALOG 0x0001 #define SFL_EXTENTS 0x0002 #define SFL_BITMAP 0x0004 #define SFL_ATTRIBUTE 0x0008 #define SFL_STARTUP 0x0010 #define SFL_VALIDMASK (SFL_CATALOG | SFL_EXTENTS | SFL_BITMAP | SFL_ATTRIBUTE | SFL_STARTUP) extern int hfs_systemfile_lock(struct hfsmount *, int, enum hfslocktype); extern void hfs_systemfile_unlock(struct hfsmount *, int); extern u_long GetFileInfo(ExtendedVCB *vcb, u_int32_t dirid, const char *name, struct cat_attr *fattr, struct cat_fork *forkinfo); extern void hfs_remove_orphans(struct hfsmount *); u_int32_t GetLogicalBlockSize(struct vnode *vp); extern u_int32_t hfs_freeblks(struct hfsmount * hfsmp, int wantreserve); short MacToVFSError(OSErr err); /* HFS directory hint functions. */ extern directoryhint_t * hfs_getdirhint(struct cnode *, int, int); extern void hfs_reldirhint(struct cnode *, directoryhint_t *); extern void hfs_reldirhints(struct cnode *, int); extern void hfs_insertdirhint(struct cnode *, directoryhint_t *); extern int hfs_namecmp(const u_int8_t *str1, size_t len1, const u_int8_t *str2, size_t len2); extern int hfs_early_journal_init(struct hfsmount *hfsmp, HFSPlusVolumeHeader *vhp, void *_args, off_t embeddedOffset, daddr64_t mdb_offset, HFSMasterDirectoryBlock *mdbp, kauth_cred_t cred); extern int hfs_virtualmetafile(struct cnode *); extern int hfs_start_transaction(struct hfsmount *hfsmp); extern int hfs_end_transaction(struct hfsmount *hfsmp); extern void hfs_sync_ejectable(struct hfsmount *hfsmp); /***************************************************************************** Functions from hfs_vnops.c ******************************************************************************/ int hfs_write_access(struct vnode *vp, kauth_cred_t cred, struct proc *p, Boolean considerFlags); int hfs_chmod(struct vnode *vp, int mode, kauth_cred_t cred, struct proc *p); int hfs_chown(struct vnode *vp, uid_t uid, gid_t gid, kauth_cred_t cred, struct proc *p); #define kMaxSecsForFsync 5 #define HFS_SYNCTRANS 1 extern int hfs_btsync(struct vnode *vp, int sync_transaction); extern void replace_desc(struct cnode *cp, struct cat_desc *cdp); extern int hfs_vgetrsrc(struct hfsmount *hfsmp, struct vnode *vp, struct vnode **rvpp, int can_drop_lock); extern int hfs_update(struct vnode *, int); /***************************************************************************** Functions from hfs_xattr.c ******************************************************************************/ int hfs_attrkeycompare(HFSPlusAttrKey *searchKey, HFSPlusAttrKey *trialKey); int hfs_buildattrkey(u_int32_t fileID, const char *attrname, HFSPlusAttrKey *key); void hfs_xattr_init(struct hfsmount * hfsmp); int file_attribute_exist(struct hfsmount *hfsmp, uint32_t fileID); /***************************************************************************** Functions from hfs_link.c ******************************************************************************/ extern int hfs_unlink(struct hfsmount *hfsmp, struct vnode *dvp, struct vnode *vp, struct componentname *cnp, int skip_reserve); extern int hfs_lookuplink(struct hfsmount *hfsmp, cnid_t linkfileid, cnid_t *prevlinkid, cnid_t *nextlinkid); extern void hfs_privatedir_init(struct hfsmount *, enum privdirtype); extern void hfs_savelinkorigin(cnode_t *cp, cnid_t parentcnid); extern void hfs_relorigins(struct cnode *cp); extern void hfs_relorigin(struct cnode *cp, cnid_t parentcnid); extern int hfs_haslinkorigin(cnode_t *cp); extern cnid_t hfs_currentparent(cnode_t *cp); extern cnid_t hfs_currentcnid(cnode_t *cp); #endif /* __APPLE_API_PRIVATE */ #endif /* KERNEL */ #endif /* __HFS__ */