/*
- * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2009 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#define HFS_SPARSE_DEV 1
-#ifdef DEBUG
+#if DEBUG
#define HFS_CHECK_LOCK_ORDER 1
#endif
#include <sys/quota.h>
#include <sys/dirent.h>
#include <sys/event.h>
+#include <kern/thread_call.h>
#include <kern/locks.h>
* 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*/
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 */
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 */
+ 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 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_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;
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 (Mac OS 9) field names */
#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
#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
******************************************************************************/
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_truncate(struct vnode *, off_t, int, int, int, vfs_context_t);
extern int hfs_bmap(struct vnode *, daddr_t, struct vnode **, daddr64_t *, unsigned int *);
extern void hfs_check_volxattr(struct hfsmount *hfsmp, unsigned int xattrtype);
-extern int hfs_isallocated(struct hfsmount *, u_long, u_long);
+extern int hfs_isallocated(struct hfsmount *, u_int32_t, u_int32_t);
/*****************************************************************************
/*****************************************************************************
Functions from hfs_vfsutils.c
******************************************************************************/
-unsigned long BestBlockSizeFit(unsigned long allocationBlockSize,
- unsigned long blockSizeLimit,
- unsigned long baseMultiple);
+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);
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,
+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 *);
short MacToVFSError(OSErr err);
+void hfs_metadatazone_init(struct hfsmount *hfsmp);
+
/* HFS directory hint functions. */
extern directoryhint_t * hfs_getdirhint(struct cnode *, int, int);
extern void hfs_reldirhint(struct cnode *, directoryhint_t *);
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);
/*****************************************************************************
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);
+ struct vnode **rvpp, int can_drop_lock, int error_on_unlinked);
extern int hfs_update(struct vnode *, int);
projects / apple / xnu.git / blobdiff