/*
- * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2009 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#define HFS_SPARSE_DEV 1
+#if DEBUG
+#define HFS_CHECK_LOCK_ORDER 1
+#endif
+
#include <sys/appleapiopts.h>
#ifdef KERNEL
#include <sys/quota.h>
#include <sys/dirent.h>
#include <sys/event.h>
+#include <kern/thread_call.h>
#include <kern/locks.h>
#define HFS_MAX_DEFERED_ALLOC (1024*1024)
-// 400 mb is a "big" file (i.e. one that when deleted
+// 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
+// multiple separate transactions)
#define HFS_BIGFILE_SIZE (400LL * 1024LL * 1024LL)
/* number of locked buffer caches to hold for b-tree meta data */
#define kMaxLockedMetaBuffers 32
-/*
- * File type and creator for symbolic links
- */
-enum {
- kSymLinkFileType = 0x736C6E6B, /* 'slnk' */
- kSymLinkCreator = 0x72686170 /* 'rhap' */
-};
-
-
extern struct timezone gTimeZone;
* volume size, all capped at a certain fixed level
*/
-#define HFS_ROOTLOWDISKTRIGGERFRACTION 5
+#define HFS_ROOTVERYLOWDISKTRIGGERFRACTION 5
+#define HFS_ROOTVERYLOWDISKTRIGGERLEVEL ((u_int64_t)(125*1024*1024))
+#define HFS_ROOTLOWDISKTRIGGERFRACTION 10
#define HFS_ROOTLOWDISKTRIGGERLEVEL ((u_int64_t)(250*1024*1024))
-#define HFS_ROOTLOWDISKSHUTOFFFRACTION 6
+#define HFS_ROOTLOWDISKSHUTOFFFRACTION 11
#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))
+#define HFS_VERYLOWDISKTRIGGERFRACTION 1
+#define HFS_VERYLOWDISKTRIGGERLEVEL ((u_int64_t)(100*1024*1024))
+#define HFS_LOWDISKTRIGGERFRACTION 2
+#define HFS_LOWDISKTRIGGERLEVEL ((u_int64_t)(150*1024*1024))
+#define HFS_LOWDISKSHUTOFFFRACTION 3
+#define HFS_LOWDISKSHUTOFFLEVEL ((u_int64_t)(200*1024*1024))
/* Internal Data structures*/
-
-#define kHFS_DamagedVolume 0x1 /* This volume has errors, unmount dirty */
-
-/* XXX */
-#define MARK_VOLUMEDAMAGED(fcb)
-
-
/* This structure describes the HFS specific mount structure data. */
typedef struct hfsmount {
u_int32_t hfs_flags; /* see below */
/* Physical Description */
- 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 */
+ 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_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 */
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 */
+ u_int32_t 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_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 sparseAllocation; /* start of allocations for sparse devices */
+ 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 */
/* Persistent fields (on disk, static) */
u_int16_t vcbSigWord;
- int16_t vcbFlags;
+ 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 */
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;
+
+ /*
+ * 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;
u_int32_t hfs_global_lock_nesting;
/* Notification variables: */
- unsigned long hfs_notification_conditions;
+ u_int32_t hfs_notification_conditions;
+ u_int32_t hfs_freespace_notify_dangerlimit;
u_int32_t hfs_freespace_notify_warninglimit;
u_int32_t hfs_freespace_notify_desiredlevel;
u_int32_t hfs_metazone_end;
u_int32_t hfs_hotfile_start;
u_int32_t hfs_hotfile_end;
+ u_int32_t hfs_min_alloc_start;
+ u_int32_t hfs_freed_block_count;
int hfs_hotfile_freeblks;
int hfs_hotfile_maxblks;
int hfs_overflow_maxblks;
#ifdef HFS_SPARSE_DEV
/* Sparse device variables: */
struct vnode * hfs_backingfs_rootvp;
+ u_int32_t hfs_last_backingstatfs;
int hfs_sparsebandblks;
+ u_int64_t hfs_backingfs_maxblocks;
#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;
+
+ /* Per mount cnode hash variables: */
+ lck_mtx_t hfs_chash_mutex; /* protects access to cnode hash table */
+ u_long hfs_cnodehash; /* size of cnode hash table - 1 */
+ LIST_HEAD(cnodehashhead, cnode) *hfs_cnodehashtbl; /* base of cnode hash */
+
+
+ /*
+ * 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;
+ u_int32_t hfs_active_threads;
+ u_int64_t hfs_max_pending_io;
+
+ 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 field names */
+/* Aliases for legacy (Mac OS 9) field names */
#define vcbCrDate hfs_itime
#define vcbLsMod hfs_mtime
#define vcbVolBkUp hfs_btime
#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 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_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
+#define HFS_DID_CONTIG_SCAN 0x100000
+
+/* 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) \
{ \
} \
#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
+#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_INODE_NAME(name,linkno) \
- (void) sprintf((name), "%s%d", HFS_INODE_PREFIX, (linkno))
+#define MAKE_DIRINODE_NAME(name, size, linkno) \
+ (void) snprintf((name), size, "%s%d", HFS_DIRINODE_PREFIX, (linkno))
+#define HFS_DIRINODE_PREFIX_LEN 4
-#define HFS_INODE_PREFIX_LEN 5
+#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 FCBTOVCB(FCB) FCBTOHFS(FCB)
-#define HFS_KNOTE(vp, hint) KNOTE(&VTOC(vp)->c_knotes, (hint))
-
-
#define E_NONE 0
#define kHFSBlockSize 512
#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_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)
/*
#define MAC_GMT_FACTOR 2082844800UL
-time_t to_bsd_time(u_int32_t hfs_time);
-u_int32_t to_hfs_time(time_t bsd_time);
+/*****************************************************************************
+ FUNCTION PROTOTYPES
+******************************************************************************/
-int hfs_flushvolumeheader(struct hfsmount *hfsmp, int waitfor, int altflush);
-#define HFS_ALTFLUSH 1
-extern int hfsUnmount(struct hfsmount *hfsmp, struct proc *p);
+/*****************************************************************************
+ hfs_vnop_xxx functions from different files
+******************************************************************************/
+int hfs_vnop_readdirattr(struct vnop_readdirattr_args *); /* in hfs_attrlist.c */
-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);
+int hfs_vnop_inactive(struct vnop_inactive_args *); /* in hfs_cnode.c */
+int hfs_vnop_reclaim(struct vnop_reclaim_args *); /* in hfs_cnode.c */
-extern u_int32_t hfs_freeblks(struct hfsmount * hfsmp, int wantreserve);
+int hfs_vnop_link(struct vnop_link_args *); /* in hfs_link.c */
-extern void hfs_remove_orphans(struct hfsmount *);
+int hfs_vnop_lookup(struct vnop_lookup_args *); /* in hfs_lookup.c */
+int hfs_vnop_search(struct vnop_searchfs_args *); /* in hfs_search.c */
-short MacToVFSError(OSErr err);
+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 */
-extern int hfs_owner_rights(struct hfsmount *hfsmp, uid_t cnode_uid, struct ucred *cred,
- struct proc *p, int invokesuperuserstatus);
+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
-u_long FindMetaDataDirectory(ExtendedVCB *vcb);
-#define kMaxSecsForFsync 5
-#define HFS_SYNCTRANS 1
+/*****************************************************************************
+ Functions from MacOSStubs.c
+******************************************************************************/
+time_t to_bsd_time(u_int32_t hfs_time);
-extern int hfs_btsync(struct vnode *vp, int sync_transaction);
-// used as a callback by the journaling code
-extern void hfs_sync_metadata(void *arg);
+u_int32_t to_hfs_time(time_t bsd_time);
-short make_dir_entry(FCB **fileptr, char *name, u_int32_t fileID);
+/*****************************************************************************
+ Functions from hfs_encodinghint.c
+******************************************************************************/
+u_int32_t hfs_pickencoding(const u_int16_t *src, int len);
-unsigned long BestBlockSizeFit(unsigned long allocationBlockSize,
- unsigned long blockSizeLimit,
- unsigned long baseMultiple);
+u_int32_t hfs_getencodingbias(void);
-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);
+void hfs_setencodingbias(u_int32_t bias);
-extern int hfs_early_journal_init(struct hfsmount *hfsmp, HFSPlusVolumeHeader *vhp,
- void *_args, off_t embeddedOffset, daddr64_t mdb_offset,
- HFSMasterDirectoryBlock *mdbp, struct ucred *cred);
-extern u_long GetFileInfo(ExtendedVCB *vcb, u_int32_t dirid, const char *name,
- struct cat_attr *fattr, struct cat_fork *forkinfo);
+
+/*****************************************************************************
+ 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, Str31 hfs_str, ByteCount maxDstLen,
+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(Str31 hfs_str, ByteCount maxDstLen, ByteCount *actualDstLen,
+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);
-u_int32_t hfs_pickencoding(const u_int16_t *src, int len);
+int mac_roman_to_unicode(const Str31 hfs_str, UniChar *uni_str, u_int32_t maxCharLen, u_int32_t *usedCharLen);
-enum volop {VOL_UPDATE, VOL_MKDIR, VOL_RMDIR, VOL_MKFILE, VOL_RMFILE};
+int unicode_to_hfs(ExtendedVCB *vcb, ByteCount srcLen, u_int16_t* srcStr, Str31 dstStr, int retry);
-extern int hfs_volupdate(struct hfsmount *hfsmp, enum volop op, int inroot);
-extern void hfs_setencodingbits(struct hfsmount *hfsmp, u_int32_t encoding);
+/*****************************************************************************
+ Functions from hfs_notifications.c
+******************************************************************************/
+void hfs_generate_volume_notifications(struct hfsmount *hfsmp);
-extern void replace_desc(struct cnode *cp, struct cat_desc *cdp);
+/*****************************************************************************
+ Functions from hfs_readwrite.c
+******************************************************************************/
+extern int hfs_relocate(struct vnode *, u_int32_t, kauth_cred_t, struct proc *);
-extern int hfs_namecmp(const char *, size_t, const char *, size_t);
+extern int hfs_truncate(struct vnode *, off_t, int, int, int, vfs_context_t);
-extern int hfs_virtualmetafile(struct cnode *);
+extern int hfs_bmap(struct vnode *, daddr_t, struct vnode **, daddr64_t *, unsigned int *);
-void hfs_generate_volume_notifications(struct hfsmount *hfsmp);
+extern int hfs_fsync(struct vnode *, int, int, struct proc *);
-__private_extern__ u_int32_t hfs_getencodingbias(void);
-__private_extern__ void hfs_setencodingbias(u_int32_t bias);
+extern int hfs_access(struct vnode *, mode_t, kauth_cred_t, struct proc *);
-extern int hfs_vgetrsrc(struct hfsmount *hfsmp, struct vnode *vp,
- struct vnode **rvpp, struct proc *p);
+extern int hfs_removeallattr(struct hfsmount *hfsmp, u_int32_t fileid);
-extern int hfs_update(struct vnode *, int);
+extern int hfs_set_volxattr(struct hfsmount *hfsmp, unsigned int xattrtype, int state);
-extern int hfs_truncate(struct vnode *, off_t, int, int, vfs_context_t);
+extern void hfs_check_volxattr(struct hfsmount *hfsmp, unsigned int xattrtype);
-extern int hfs_fsync(struct vnode *, int, int, struct proc *);
+extern int hfs_isallocated(struct hfsmount *, u_int32_t, u_int32_t);
-extern int hfs_access(struct vnode *, mode_t, struct ucred *, struct proc *);
-extern int hfs_vget(struct hfsmount *, cnid_t, struct vnode **, int);
+/*****************************************************************************
+ Functions from hfs_vfsops.c
+******************************************************************************/
+int hfs_mountroot(mount_t mp, vnode_t rvp, vfs_context_t context);
-extern int hfs_bmap(struct vnode *, daddr_t, struct vnode **, daddr64_t *, int *);
+/* used as a callback by the journaling code */
+extern void hfs_sync_metadata(void *arg);
-extern int hfs_removeallattr(struct hfsmount *hfsmp, u_int32_t fileid);
+extern int hfs_vget(struct hfsmount *, cnid_t, struct vnode **, int);
-__private_extern__ int hfs_start_transaction(struct hfsmount *hfsmp);
-__private_extern__ int hfs_end_transaction(struct hfsmount *hfsmp);
+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);
-extern int hfs_setextendedsecurity(struct hfsmount *hfsmp, int state);
-extern void hfs_checkextendedsecurity(struct hfsmount *hfsmp);
+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 *);
-extern int hfs_isallocated(struct hfsmount *, u_long, u_long);
+/* 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
+******************************************************************************/
+u_int32_t BestBlockSizeFit(u_int32_t allocationBlockSize,
+ u_int32_t blockSizeLimit,
+ u_int32_t 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_EXTENTS 0x0002
#define SFL_BITMAP 0x0004
#define SFL_ATTRIBUTE 0x0008
-#define SFL_VALIDMASK (SFL_CATALOG | SFL_EXTENTS | SFL_BITMAP | SFL_ATTRIBUTE)
+#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_int32_t 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 int hfs_journal_flush(struct hfsmount *hfsmp);
+extern void hfs_sync_ejectable(struct hfsmount *hfsmp);
+
+/* Erase unused Catalog nodes due to <rdar://problem/6947811>. */
+extern int hfs_erase_unused_nodes(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, int error_on_unlinked);
+
+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__ */
projects / apple / xnu.git / blobdiff