#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kauth.h>
#include <sys/ubc.h>
#include <sys/vnode_internal.h>
#include <sys/mount_internal.h>
#include <sys/sysctl.h>
#include <sys/malloc.h>
#include <sys/stat.h>
#include <sys/quota.h>
#include <sys/disk.h>
#include <sys/paths.h>
#include <sys/utfconv.h>
#include <sys/kdebug.h>
#include <kern/locks.h>
#include <vfs/vfs_journal.h>
#include <miscfs/specfs/specdev.h>
#include <hfs/hfs_mount.h>
#include "hfs.h"
#include "hfs_catalog.h"
#include "hfs_cnode.h"
#include "hfs_dbg.h"
#include "hfs_endian.h"
#include "hfs_hotfiles.h"
#include "hfs_quota.h"
#include "hfscommon/headers/FileMgrInternal.h"
#include "hfscommon/headers/BTreesInternal.h"
#if HFS_DIAGNOSTIC
int hfs_dbg_all = 0;
int hfs_dbg_err = 0;
#endif
lck_grp_attr_t * hfs_group_attr;
lck_attr_t * hfs_lock_attr;
lck_grp_t * hfs_mutex_group;
lck_grp_t * hfs_rwlock_group;
extern struct vnodeopv_desc hfs_vnodeop_opv_desc;
extern void hfs_converterinit(void);
extern void inittodr(time_t base);
extern int hfs_write_access(struct vnode *, kauth_cred_t, struct proc *, Boolean);
static int hfs_changefs(struct mount *mp, struct hfs_mount_args *args);
static int hfs_fhtovp(struct mount *mp, int fhlen, unsigned char *fhp, struct vnode **vpp, vfs_context_t context);
static int hfs_flushfiles(struct mount *, int, struct proc *);
static int hfs_flushMDB(struct hfsmount *hfsmp, int waitfor, int altflush);
static int hfs_getmountpoint(struct vnode *vp, struct hfsmount **hfsmpp);
static int hfs_init(struct vfsconf *vfsp);
static int hfs_mount(struct mount *mp, vnode_t devvp, user_addr_t data, vfs_context_t context);
static int hfs_mountfs(struct vnode *devvp, struct mount *mp, struct hfs_mount_args *args, vfs_context_t context);
static int hfs_reload(struct mount *mp, kauth_cred_t cred, struct proc *p);
static int hfs_vfs_root(struct mount *mp, struct vnode **vpp, vfs_context_t context);
static int hfs_quotactl(struct mount *, int, uid_t, caddr_t, vfs_context_t context);
static int hfs_start(struct mount *mp, int flags, vfs_context_t context);
static int hfs_statfs(struct mount *mp, register struct vfsstatfs *sbp, vfs_context_t context);
static int hfs_sync(struct mount *mp, int waitfor, vfs_context_t context);
static int hfs_sysctl(int *name, u_int namelen, user_addr_t oldp, size_t *oldlenp,
user_addr_t newp, size_t newlen, vfs_context_t context);
static int hfs_unmount(struct mount *mp, int mntflags, vfs_context_t context);
static int hfs_vfs_vget(struct mount *mp, ino64_t ino, struct vnode **vpp, vfs_context_t context);
static int hfs_vptofh(struct vnode *vp, int *fhlenp, unsigned char *fhp, vfs_context_t context);
static int hfs_reclaimspace(struct hfsmount *hfsmp, u_long startblk);
__private_extern__
int
hfs_mountroot(mount_t mp, vnode_t rvp, vfs_context_t context)
{
struct hfsmount *hfsmp;
ExtendedVCB *vcb;
struct vfsstatfs *vfsp;
int error;
if ((error = hfs_mountfs(rvp, mp, NULL, context)))
return (error);
hfsmp = VFSTOHFS(mp);
hfsmp->hfs_uid = UNKNOWNUID;
hfsmp->hfs_gid = UNKNOWNGID;
hfsmp->hfs_dir_mask = (S_IRWXU | S_IRGRP|S_IXGRP | S_IROTH|S_IXOTH);
hfsmp->hfs_file_mask = (S_IRWXU | S_IRGRP|S_IXGRP | S_IROTH|S_IXOTH);
vcb = HFSTOVCB(hfsmp);
vcb->reserveBlocks = ((u_int64_t)vcb->totalBlocks * HFS_MINFREE) / 100;
vcb->reserveBlocks = MIN(vcb->reserveBlocks, HFS_MAXRESERVE / vcb->blockSize);
vfsp = vfs_statfs(mp);
(void)hfs_statfs(mp, vfsp, NULL);
return (0);
}
static int
hfs_mount(struct mount *mp, vnode_t devvp, user_addr_t data, vfs_context_t context)
{
struct proc *p = vfs_context_proc(context);
struct hfsmount *hfsmp = NULL;
struct hfs_mount_args args;
int retval = E_NONE;
uint32_t cmdflags;
if ((retval = copyin(data, (caddr_t)&args, sizeof(args)))) {
return (retval);
}
cmdflags = (uint32_t)vfs_flags(mp) & MNT_CMDFLAGS;
if (cmdflags & MNT_UPDATE) {
hfsmp = VFSTOHFS(mp);
if (cmdflags & MNT_RELOAD) {
if (vfs_isrdonly(mp))
return hfs_reload(mp, vfs_context_ucred(context), p);
else
return (EINVAL);
}
if (((hfsmp->hfs_flags & HFS_READ_ONLY) == 0) &&
vfs_isrdonly(mp)) {
int flags;
retval = VFS_SYNC(mp, MNT_WAIT, context);
if (retval && ((cmdflags & MNT_FORCE) == 0))
goto out;
flags = WRITECLOSE;
if (cmdflags & MNT_FORCE)
flags |= FORCECLOSE;
if ((retval = hfs_flushfiles(mp, flags, p)))
goto out;
hfsmp->hfs_flags |= HFS_READ_ONLY;
retval = hfs_flushvolumeheader(hfsmp, MNT_WAIT, 0);
if (!retval) {
if (vnode_mount(hfsmp->hfs_devvp) == mp) {
retval = hfs_fsync(hfsmp->hfs_devvp, MNT_WAIT, 0, p);
} else {
vnode_get(hfsmp->hfs_devvp);
retval = VNOP_FSYNC(hfsmp->hfs_devvp, MNT_WAIT, context);
vnode_put(hfsmp->hfs_devvp);
}
}
if (retval) {
hfsmp->hfs_flags &= ~HFS_READ_ONLY;
goto out;
}
if (hfsmp->jnl) {
hfs_global_exclusive_lock_acquire(hfsmp);
journal_close(hfsmp->jnl);
hfsmp->jnl = NULL;
hfs_global_exclusive_lock_release(hfsmp);
}
}
if (vfs_iswriteupgrade(mp)) {
retval = hfs_flushvolumeheader(hfsmp, MNT_WAIT, 0);
if (retval != E_NONE)
goto out;
if ( (HFSTOVCB(hfsmp)->vcbAtrb & kHFSVolumeJournaledMask)
&& hfsmp->jnl == NULL
&& hfsmp->jvp != NULL) {
int jflags;
if (hfsmp->hfs_flags & HFS_NEED_JNL_RESET) {
jflags = JOURNAL_RESET;
} else {
jflags = 0;
}
hfs_global_exclusive_lock_acquire(hfsmp);
hfsmp->jnl = journal_open(hfsmp->jvp,
(hfsmp->jnl_start * HFSTOVCB(hfsmp)->blockSize) + (off_t)HFSTOVCB(hfsmp)->hfsPlusIOPosOffset,
hfsmp->jnl_size,
hfsmp->hfs_devvp,
hfsmp->hfs_phys_block_size,
jflags,
0,
hfs_sync_metadata, hfsmp->hfs_mp);
hfs_global_exclusive_lock_release(hfsmp);
if (hfsmp->jnl == NULL) {
retval = EINVAL;
goto out;
} else {
hfsmp->hfs_flags &= ~HFS_NEED_JNL_RESET;
}
}
hfsmp->hfs_flags &= ~HFS_READ_ONLY;
if (!(hfsmp->hfs_flags & (HFS_READ_ONLY & HFS_STANDARD))) {
FindMetaDataDirectory(HFSTOVCB(hfsmp));
hfs_remove_orphans(hfsmp);
if (hfsmp->hfs_flags & HFS_METADATA_ZONE) {
(void) hfs_recording_init(hfsmp);
}
}
}
retval = hfs_changefs(mp, &args);
} else {
vfs_setflags(mp, (uint64_t)((unsigned int)MNT_DOVOLFS));
retval = hfs_mountfs(devvp, mp, &args, context);
}
out:
if (retval == 0) {
(void)hfs_statfs(mp, vfs_statfs(mp), context);
}
return (retval);
}
struct hfs_changefs_cargs {
struct hfsmount *hfsmp;
int namefix;
int permfix;
int permswitch;
};
static int
hfs_changefs_callback(struct vnode *vp, void *cargs)
{
ExtendedVCB *vcb;
struct cnode *cp;
struct cat_desc cndesc;
struct cat_attr cnattr;
struct hfs_changefs_cargs *args;
args = (struct hfs_changefs_cargs *)cargs;
cp = VTOC(vp);
vcb = HFSTOVCB(args->hfsmp);
if (cat_lookup(args->hfsmp, &cp->c_desc, 0, &cndesc, &cnattr, NULL, NULL)) {
if (args->namefix)
cache_purge(vp);
return (VNODE_RETURNED);
}
if (args->permswitch || args->permfix) {
cp->c_uid = cnattr.ca_uid;
cp->c_gid = cnattr.ca_gid;
cp->c_mode = cnattr.ca_mode;
}
if (args->namefix) {
cache_purge(vp);
replace_desc(cp, &cndesc);
if (cndesc.cd_cnid == kHFSRootFolderID) {
strncpy(vcb->vcbVN, cp->c_desc.cd_nameptr, NAME_MAX);
cp->c_desc.cd_encoding = args->hfsmp->hfs_encoding;
}
} else {
cat_releasedesc(&cndesc);
}
return (VNODE_RETURNED);
}
static int
hfs_changefs(struct mount *mp, struct hfs_mount_args *args)
{
int retval = 0;
int namefix, permfix, permswitch;
struct hfsmount *hfsmp;
ExtendedVCB *vcb;
hfs_to_unicode_func_t get_unicode_func;
unicode_to_hfs_func_t get_hfsname_func;
u_long old_encoding = 0;
struct hfs_changefs_cargs cargs;
uint32_t mount_flags;
hfsmp = VFSTOHFS(mp);
vcb = HFSTOVCB(hfsmp);
mount_flags = (unsigned int)vfs_flags(mp);
permswitch = (((hfsmp->hfs_flags & HFS_UNKNOWN_PERMS) &&
((mount_flags & MNT_UNKNOWNPERMISSIONS) == 0)) ||
(((hfsmp->hfs_flags & HFS_UNKNOWN_PERMS) == 0) &&
(mount_flags & MNT_UNKNOWNPERMISSIONS)));
if (permswitch && (mount_flags & MNT_ROOTFS) && (mount_flags & MNT_UNKNOWNPERMISSIONS)) {
vfs_clearflags(mp, (uint64_t)((unsigned int)MNT_UNKNOWNPERMISSIONS));
return EINVAL;
}
if (mount_flags & MNT_UNKNOWNPERMISSIONS)
hfsmp->hfs_flags |= HFS_UNKNOWN_PERMS;
else
hfsmp->hfs_flags &= ~HFS_UNKNOWN_PERMS;
namefix = permfix = 0;
if (args->hfs_timezone.tz_minuteswest != VNOVAL) {
gTimeZone = args->hfs_timezone;
}
if ((args->hfs_uid != (uid_t)VNOVAL) && (hfsmp->hfs_uid != args->hfs_uid)) {
hfsmp->hfs_uid = args->hfs_uid;
if (vcb->vcbSigWord == kHFSPlusSigWord)
++permfix;
}
if ((args->hfs_gid != (gid_t)VNOVAL) && (hfsmp->hfs_gid != args->hfs_gid)) {
hfsmp->hfs_gid = args->hfs_gid;
if (vcb->vcbSigWord == kHFSPlusSigWord)
++permfix;
}
if (args->hfs_mask != (mode_t)VNOVAL) {
if (hfsmp->hfs_dir_mask != (args->hfs_mask & ALLPERMS)) {
hfsmp->hfs_dir_mask = args->hfs_mask & ALLPERMS;
hfsmp->hfs_file_mask = args->hfs_mask & ALLPERMS;
if ((args->flags != VNOVAL) && (args->flags & HFSFSMNT_NOXONFILES))
hfsmp->hfs_file_mask = (args->hfs_mask & DEFFILEMODE);
if (vcb->vcbSigWord == kHFSPlusSigWord)
++permfix;
}
}
if ((vcb->vcbSigWord == kHFSSigWord) &&
(args->hfs_encoding != (u_long)VNOVAL) &&
(hfsmp->hfs_encoding != args->hfs_encoding)) {
retval = hfs_getconverter(args->hfs_encoding, &get_unicode_func, &get_hfsname_func);
if (retval)
goto exit;
hfsmp->hfs_get_unicode = get_unicode_func;
old_encoding = hfsmp->hfs_encoding;
hfsmp->hfs_encoding = args->hfs_encoding;
++namefix;
}
if (!(namefix || permfix || permswitch))
goto exit;
if (permfix)
vfs_setowner(mp,
hfsmp->hfs_uid == UNKNOWNUID ? KAUTH_UID_NONE : hfsmp->hfs_uid,
hfsmp->hfs_gid == UNKNOWNGID ? KAUTH_GID_NONE : hfsmp->hfs_gid);
cargs.hfsmp = hfsmp;
cargs.namefix = namefix;
cargs.permfix = permfix;
cargs.permswitch = permswitch;
vnode_iterate(mp, 0, hfs_changefs_callback, (void *)&cargs);
if (namefix) {
hfsmp->hfs_get_hfsname = get_hfsname_func;
vcb->volumeNameEncodingHint = args->hfs_encoding;
(void) hfs_relconverter(old_encoding);
}
exit:
return (retval);
}
struct hfs_reload_cargs {
struct hfsmount *hfsmp;
kauth_cred_t cred;
struct proc *p;
int error;
};
static int
hfs_reload_callback(struct vnode *vp, void *cargs)
{
struct cnode *cp;
struct hfs_reload_cargs *args;
args = (struct hfs_reload_cargs *)cargs;
(void) buf_invalidateblks(vp, 0, 0, 0);
cp = VTOC(vp);
if (vnode_isdir(vp))
hfs_reldirhints(cp, 0);
if (!vnode_issystem(vp) && !VNODE_IS_RSRC(vp)) {
struct cat_fork *datafork;
struct cat_desc desc;
datafork = cp->c_datafork ? &cp->c_datafork->ff_data : NULL;
if ((args->error = cat_idlookup(args->hfsmp, cp->c_fileid, &desc, &cp->c_attr, datafork)))
return (VNODE_RETURNED_DONE);
(void) replace_desc(cp, &desc);
}
return (VNODE_RETURNED);
}
static int
hfs_reload(struct mount *mountp, kauth_cred_t cred, struct proc *p)
{
register struct vnode *devvp;
struct buf *bp;
int sectorsize;
int error, i;
struct hfsmount *hfsmp;
struct HFSPlusVolumeHeader *vhp;
ExtendedVCB *vcb;
struct filefork *forkp;
struct cat_desc cndesc;
struct hfs_reload_cargs args;
hfsmp = VFSTOHFS(mountp);
vcb = HFSTOVCB(hfsmp);
if (vcb->vcbSigWord == kHFSSigWord)
return (EINVAL);
devvp = hfsmp->hfs_devvp;
if (buf_invalidateblks(devvp, 0, 0, 0))
panic("hfs_reload: dirty1");
args.hfsmp = hfsmp;
args.cred = cred;
args.p = p;
args.error = 0;
vnode_iterate(mountp, VNODE_RELOAD | VNODE_WAIT, hfs_reload_callback, (void *)&args);
if (args.error)
return (args.error);
sectorsize = hfsmp->hfs_phys_block_size;
error = (int)buf_meta_bread(hfsmp->hfs_devvp,
(daddr64_t)((vcb->hfsPlusIOPosOffset / sectorsize) + HFS_PRI_SECTOR(sectorsize)),
sectorsize, NOCRED, &bp);
if (error) {
if (bp != NULL)
buf_brelse(bp);
return (error);
}
vhp = (HFSPlusVolumeHeader *) (buf_dataptr(bp) + HFS_PRI_OFFSET(sectorsize));
if ((SWAP_BE16(vhp->signature) != kHFSPlusSigWord &&
SWAP_BE16(vhp->signature) != kHFSXSigWord) ||
(SWAP_BE16(vhp->version) != kHFSPlusVersion &&
SWAP_BE16(vhp->version) != kHFSXVersion) ||
SWAP_BE32(vhp->blockSize) != vcb->blockSize) {
buf_brelse(bp);
return (EIO);
}
vcb->vcbLsMod = to_bsd_time(SWAP_BE32(vhp->modifyDate));
vcb->vcbAtrb = SWAP_BE32 (vhp->attributes);
vcb->vcbJinfoBlock = SWAP_BE32(vhp->journalInfoBlock);
vcb->vcbClpSiz = SWAP_BE32 (vhp->rsrcClumpSize);
vcb->vcbNxtCNID = SWAP_BE32 (vhp->nextCatalogID);
vcb->vcbVolBkUp = to_bsd_time(SWAP_BE32(vhp->backupDate));
vcb->vcbWrCnt = SWAP_BE32 (vhp->writeCount);
vcb->vcbFilCnt = SWAP_BE32 (vhp->fileCount);
vcb->vcbDirCnt = SWAP_BE32 (vhp->folderCount);
vcb->nextAllocation = SWAP_BE32 (vhp->nextAllocation);
vcb->totalBlocks = SWAP_BE32 (vhp->totalBlocks);
vcb->freeBlocks = SWAP_BE32 (vhp->freeBlocks);
vcb->encodingsBitmap = SWAP_BE64 (vhp->encodingsBitmap);
bcopy(vhp->finderInfo, vcb->vcbFndrInfo, sizeof(vhp->finderInfo));
vcb->localCreateDate = SWAP_BE32 (vhp->createDate);
forkp = VTOF((struct vnode *)vcb->extentsRefNum);
for (i = 0; i < kHFSPlusExtentDensity; i++) {
forkp->ff_extents[i].startBlock =
SWAP_BE32 (vhp->extentsFile.extents[i].startBlock);
forkp->ff_extents[i].blockCount =
SWAP_BE32 (vhp->extentsFile.extents[i].blockCount);
}
forkp->ff_size = SWAP_BE64 (vhp->extentsFile.logicalSize);
forkp->ff_blocks = SWAP_BE32 (vhp->extentsFile.totalBlocks);
forkp->ff_clumpsize = SWAP_BE32 (vhp->extentsFile.clumpSize);
forkp = VTOF((struct vnode *)vcb->catalogRefNum);
for (i = 0; i < kHFSPlusExtentDensity; i++) {
forkp->ff_extents[i].startBlock =
SWAP_BE32 (vhp->catalogFile.extents[i].startBlock);
forkp->ff_extents[i].blockCount =
SWAP_BE32 (vhp->catalogFile.extents[i].blockCount);
}
forkp->ff_size = SWAP_BE64 (vhp->catalogFile.logicalSize);
forkp->ff_blocks = SWAP_BE32 (vhp->catalogFile.totalBlocks);
forkp->ff_clumpsize = SWAP_BE32 (vhp->catalogFile.clumpSize);
if (hfsmp->hfs_attribute_vp) {
forkp = VTOF(hfsmp->hfs_attribute_vp);
for (i = 0; i < kHFSPlusExtentDensity; i++) {
forkp->ff_extents[i].startBlock =
SWAP_BE32 (vhp->attributesFile.extents[i].startBlock);
forkp->ff_extents[i].blockCount =
SWAP_BE32 (vhp->attributesFile.extents[i].blockCount);
}
forkp->ff_size = SWAP_BE64 (vhp->attributesFile.logicalSize);
forkp->ff_blocks = SWAP_BE32 (vhp->attributesFile.totalBlocks);
forkp->ff_clumpsize = SWAP_BE32 (vhp->attributesFile.clumpSize);
}
forkp = VTOF((struct vnode *)vcb->allocationsRefNum);
for (i = 0; i < kHFSPlusExtentDensity; i++) {
forkp->ff_extents[i].startBlock =
SWAP_BE32 (vhp->allocationFile.extents[i].startBlock);
forkp->ff_extents[i].blockCount =
SWAP_BE32 (vhp->allocationFile.extents[i].blockCount);
}
forkp->ff_size = SWAP_BE64 (vhp->allocationFile.logicalSize);
forkp->ff_blocks = SWAP_BE32 (vhp->allocationFile.totalBlocks);
forkp->ff_clumpsize = SWAP_BE32 (vhp->allocationFile.clumpSize);
buf_brelse(bp);
vhp = NULL;
forkp = VTOF((struct vnode *)vcb->extentsRefNum);
if ( (error = MacToVFSError( BTReloadData((FCB*)forkp) )) )
return (error);
forkp = VTOF((struct vnode *)vcb->catalogRefNum);
if ( (error = MacToVFSError( BTReloadData((FCB*)forkp) )) )
return (error);
if (hfsmp->hfs_attribute_vp) {
forkp = VTOF(hfsmp->hfs_attribute_vp);
if ( (error = MacToVFSError( BTReloadData((FCB*)forkp) )) )
return (error);
}
if ((error = cat_idlookup(hfsmp, kHFSRootFolderID, &cndesc, NULL, NULL)))
return (error);
vcb->volumeNameEncodingHint = cndesc.cd_encoding;
bcopy(cndesc.cd_nameptr, vcb->vcbVN, min(255, cndesc.cd_namelen));
cat_releasedesc(&cndesc);
FindMetaDataDirectory(vcb);
hfs_generate_volume_notifications(hfsmp);
return (0);
}
static int
hfs_mountfs(struct vnode *devvp, struct mount *mp, struct hfs_mount_args *args,
vfs_context_t context)
{
struct proc *p = vfs_context_proc(context);
int retval = E_NONE;
struct hfsmount *hfsmp;
struct buf *bp;
dev_t dev;
HFSMasterDirectoryBlock *mdbp;
int ronly;
int i;
int mntwrapper;
kauth_cred_t cred;
u_int64_t disksize;
daddr64_t blkcnt;
u_int32_t blksize;
u_int32_t minblksize;
u_int32_t iswritable;
daddr64_t mdb_offset;
ronly = vfs_isrdonly(mp);
dev = vnode_specrdev(devvp);
cred = p ? vfs_context_ucred(context) : NOCRED;
mntwrapper = 0;
bp = NULL;
hfsmp = NULL;
mdbp = NULL;
minblksize = kHFSBlockSize;
vfs_setlocklocal(mp);
if (VNOP_IOCTL(devvp, DKIOCGETBLOCKSIZE, (caddr_t)&blksize, 0, context)) {
retval = ENXIO;
goto error_exit;
}
if (blksize > 512) {
u_int32_t size512 = 512;
if (VNOP_IOCTL(devvp, DKIOCSETBLOCKSIZE, (caddr_t)&size512, FWRITE, context)) {
retval = ENXIO;
goto error_exit;
}
}
if (VNOP_IOCTL(devvp, DKIOCGETBLOCKCOUNT, (caddr_t)&blkcnt, 0, context)) {
retval = ENXIO;
goto error_exit;
}
disksize = (u_int64_t)blkcnt * (u_int64_t)512;
if (blkcnt > (u_int64_t)0x000000007fffffff) {
minblksize = blksize = 4096;
}
if (blksize > 512) {
if (VNOP_IOCTL(devvp, DKIOCSETBLOCKSIZE, (caddr_t)&blksize, FWRITE, context)) {
retval = ENXIO;
goto error_exit;
}
if (VNOP_IOCTL(devvp, DKIOCGETBLOCKCOUNT, (caddr_t)&blkcnt, 0, context)) {
retval = ENXIO;
goto error_exit;
}
}
mdb_offset = (daddr64_t)HFS_PRI_SECTOR(blksize);
if ((retval = (int)buf_meta_bread(devvp, mdb_offset, blksize, cred, &bp))) {
goto error_exit;
}
MALLOC(mdbp, HFSMasterDirectoryBlock *, kMDBSize, M_TEMP, M_WAITOK);
bcopy((char *)buf_dataptr(bp) + HFS_PRI_OFFSET(blksize), mdbp, kMDBSize);
buf_brelse(bp);
bp = NULL;
MALLOC(hfsmp, struct hfsmount *, sizeof(struct hfsmount), M_HFSMNT, M_WAITOK);
bzero(hfsmp, sizeof(struct hfsmount));
lck_mtx_init(&hfsmp->hfs_mutex, hfs_mutex_group, hfs_lock_attr);
lck_mtx_init(&hfsmp->hfc_mutex, hfs_mutex_group, hfs_lock_attr);
lck_rw_init(&hfsmp->hfs_global_lock, hfs_rwlock_group, hfs_lock_attr);
lck_rw_init(&hfsmp->hfs_insync, hfs_rwlock_group, hfs_lock_attr);
vfs_setfsprivate(mp, hfsmp);
hfsmp->hfs_mp = mp;
hfsmp->hfs_raw_dev = vnode_specrdev(devvp);
hfsmp->hfs_devvp = devvp;
hfsmp->hfs_phys_block_size = blksize;
hfsmp->hfs_phys_block_count = blkcnt;
hfsmp->hfs_flags |= HFS_WRITEABLE_MEDIA;
if (ronly)
hfsmp->hfs_flags |= HFS_READ_ONLY;
if (((unsigned int)vfs_flags(mp)) & MNT_UNKNOWNPERMISSIONS)
hfsmp->hfs_flags |= HFS_UNKNOWN_PERMS;
for (i = 0; i < MAXQUOTAS; i++)
dqfileinit(&hfsmp->hfs_qfiles[i]);
if (args) {
hfsmp->hfs_uid = (args->hfs_uid == (uid_t)VNOVAL) ? UNKNOWNUID : args->hfs_uid;
if (hfsmp->hfs_uid == 0xfffffffd) hfsmp->hfs_uid = UNKNOWNUID;
hfsmp->hfs_gid = (args->hfs_gid == (gid_t)VNOVAL) ? UNKNOWNGID : args->hfs_gid;
if (hfsmp->hfs_gid == 0xfffffffd) hfsmp->hfs_gid = UNKNOWNGID;
vfs_setowner(mp, hfsmp->hfs_uid, hfsmp->hfs_gid);
if (args->hfs_mask != (mode_t)VNOVAL) {
hfsmp->hfs_dir_mask = args->hfs_mask & ALLPERMS;
if (args->flags & HFSFSMNT_NOXONFILES) {
hfsmp->hfs_file_mask = (args->hfs_mask & DEFFILEMODE);
} else {
hfsmp->hfs_file_mask = args->hfs_mask & ALLPERMS;
}
} else {
hfsmp->hfs_dir_mask = UNKNOWNPERMISSIONS & ALLPERMS;
hfsmp->hfs_file_mask = UNKNOWNPERMISSIONS & DEFFILEMODE;
}
if ((args->flags != (int)VNOVAL) && (args->flags & HFSFSMNT_WRAPPER))
mntwrapper = 1;
} else {
if (((unsigned int)vfs_flags(mp)) & MNT_UNKNOWNPERMISSIONS) {
hfsmp->hfs_uid = UNKNOWNUID;
hfsmp->hfs_gid = UNKNOWNGID;
vfs_setowner(mp, hfsmp->hfs_uid, hfsmp->hfs_gid);
hfsmp->hfs_dir_mask = UNKNOWNPERMISSIONS & ALLPERMS;
hfsmp->hfs_file_mask = UNKNOWNPERMISSIONS & DEFFILEMODE;
}
}
if (VNOP_IOCTL(devvp, DKIOCISWRITABLE, (caddr_t)&iswritable, 0, context) == 0) {
if (iswritable)
hfsmp->hfs_flags |= HFS_WRITEABLE_MEDIA;
else
hfsmp->hfs_flags &= ~HFS_WRITEABLE_MEDIA;
}
{
struct timeval tv;
microtime(&tv);
hfsmp->hfs_mount_time = tv.tv_sec;
}
if ((SWAP_BE16(mdbp->drSigWord) == kHFSSigWord) &&
(mntwrapper || (SWAP_BE16(mdbp->drEmbedSigWord) != kHFSPlusSigWord))) {
if ((vfs_flags(mp) & MNT_ROOTFS)) {
retval = EINVAL;
goto error_exit;
}
if (blksize > kHFSBlockSize) {
blksize = kHFSBlockSize;
if (VNOP_IOCTL(devvp, DKIOCSETBLOCKSIZE, (caddr_t)&blksize, FWRITE, context)) {
retval = ENXIO;
goto error_exit;
}
if (VNOP_IOCTL(devvp, DKIOCGETBLOCKCOUNT, (caddr_t)&blkcnt, 0, context)) {
retval = ENXIO;
goto error_exit;
}
hfsmp->hfs_phys_block_size = blksize;
hfsmp->hfs_phys_block_count = blkcnt;
}
if (args) {
hfsmp->hfs_encoding = args->hfs_encoding;
HFSTOVCB(hfsmp)->volumeNameEncodingHint = args->hfs_encoding;
gTimeZone = args->hfs_timezone;
}
retval = hfs_getconverter(hfsmp->hfs_encoding, &hfsmp->hfs_get_unicode,
&hfsmp->hfs_get_hfsname);
if (retval)
goto error_exit;
retval = hfs_MountHFSVolume(hfsmp, mdbp, p);
if (retval)
(void) hfs_relconverter(hfsmp->hfs_encoding);
} else {
HFSPlusVolumeHeader *vhp;
off_t embeddedOffset;
int jnl_disable = 0;
if (SWAP_BE16(mdbp->drEmbedSigWord) == kHFSPlusSigWord) {
embeddedOffset = SWAP_BE16(mdbp->drAlBlSt) * kHFSBlockSize;
embeddedOffset += (u_int64_t)SWAP_BE16(mdbp->drEmbedExtent.startBlock) *
(u_int64_t)SWAP_BE32(mdbp->drAlBlkSiz);
if ((embeddedOffset % blksize) != 0) {
printf("HFS Mount: embedded volume offset not"
" a multiple of physical block size (%d);"
" switching to 512\n", blksize);
blksize = 512;
if (VNOP_IOCTL(devvp, DKIOCSETBLOCKSIZE,
(caddr_t)&blksize, FWRITE, context)) {
retval = ENXIO;
goto error_exit;
}
if (VNOP_IOCTL(devvp, DKIOCGETBLOCKCOUNT,
(caddr_t)&blkcnt, 0, context)) {
retval = ENXIO;
goto error_exit;
}
hfsmp->hfs_phys_block_count *=
hfsmp->hfs_phys_block_size / blksize;
hfsmp->hfs_phys_block_size = blksize;
}
disksize = (u_int64_t)SWAP_BE16(mdbp->drEmbedExtent.blockCount) *
(u_int64_t)SWAP_BE32(mdbp->drAlBlkSiz);
hfsmp->hfs_phys_block_count = disksize / blksize;
mdb_offset = (daddr64_t)((embeddedOffset / blksize) + HFS_PRI_SECTOR(blksize));
retval = (int)buf_meta_bread(devvp, mdb_offset, blksize, cred, &bp);
if (retval)
goto error_exit;
bcopy((char *)buf_dataptr(bp) + HFS_PRI_OFFSET(blksize), mdbp, 512);
buf_brelse(bp);
bp = NULL;
vhp = (HFSPlusVolumeHeader*) mdbp;
} else {
embeddedOffset = 0;
vhp = (HFSPlusVolumeHeader*) mdbp;
}
hfsmp->jnl = NULL;
hfsmp->jvp = NULL;
if (args != NULL && (args->flags & HFSFSMNT_EXTENDED_ARGS) && args->journal_disable) {
jnl_disable = 1;
}
if ( (SWAP_BE32(vhp->lastMountedVersion) == kHFSJMountVersion)
&& (SWAP_BE32(vhp->attributes) & kHFSVolumeJournaledMask)
&& !jnl_disable) {
if (hfs_early_journal_init(hfsmp, vhp, args, embeddedOffset, mdb_offset, mdbp, cred) == 0) {
vfs_setflags(mp, (uint64_t)((unsigned int)MNT_JOURNALED));
} else {
if (!ronly) {
HFSPlusVolumeHeader *jvhp;
hfsmp->hfs_flags |= HFS_NEED_JNL_RESET;
if (mdb_offset == 0) {
mdb_offset = (daddr64_t)((embeddedOffset / blksize) + HFS_PRI_SECTOR(blksize));
}
bp = NULL;
retval = (int)buf_meta_bread(devvp, mdb_offset, blksize, cred, &bp);
if (retval == 0) {
jvhp = (HFSPlusVolumeHeader *)(buf_dataptr(bp) + HFS_PRI_OFFSET(blksize));
if (SWAP_BE16(jvhp->signature) == kHFSPlusSigWord || SWAP_BE16(jvhp->signature) == kHFSXSigWord) {
printf ("hfs(1): Journal replay fail. Writing lastMountVersion as FSK!\n");
jvhp->lastMountedVersion = SWAP_BE32(kFSKMountVersion);
buf_bwrite(bp);
} else {
buf_brelse(bp);
}
bp = NULL;
} else if (bp) {
buf_brelse(bp);
bp = NULL;
}
}
if ( !(vfs_flags(mp) & MNT_ROOTFS)) {
retval = EINVAL;
goto error_exit;
}
}
}
(void) hfs_getconverter(0, &hfsmp->hfs_get_unicode, &hfsmp->hfs_get_hfsname);
retval = hfs_MountHFSPlusVolume(hfsmp, vhp, embeddedOffset, disksize, p, args, cred);
if ((retval == ENXIO) && (blksize > 512) && (blksize != minblksize)) {
printf("HFS Mount: could not use physical block size "
"(%d) switching to 512\n", blksize);
blksize = 512;
if (VNOP_IOCTL(devvp, DKIOCSETBLOCKSIZE, (caddr_t)&blksize, FWRITE, context)) {
retval = ENXIO;
goto error_exit;
}
if (VNOP_IOCTL(devvp, DKIOCGETBLOCKCOUNT, (caddr_t)&blkcnt, 0, context)) {
retval = ENXIO;
goto error_exit;
}
devvp->v_specsize = blksize;
hfsmp->hfs_phys_block_count *= hfsmp->hfs_phys_block_size / blksize;
hfsmp->hfs_phys_block_size = blksize;
if (hfsmp->jnl) {
journal_close(hfsmp->jnl);
hfsmp->jnl = NULL;
if (hfs_early_journal_init(hfsmp, vhp, args, embeddedOffset, mdb_offset, mdbp, cred) == 0) {
vfs_setflags(mp, (uint64_t)((unsigned int)MNT_JOURNALED));
} else {
if (!ronly) {
HFSPlusVolumeHeader *jvhp;
hfsmp->hfs_flags |= HFS_NEED_JNL_RESET;
if (mdb_offset == 0) {
mdb_offset = (daddr64_t)((embeddedOffset / blksize) + HFS_PRI_SECTOR(blksize));
}
bp = NULL;
retval = (int)buf_meta_bread(devvp, mdb_offset, blksize, cred, &bp);
if (retval == 0) {
jvhp = (HFSPlusVolumeHeader *)(buf_dataptr(bp) + HFS_PRI_OFFSET(blksize));
if (SWAP_BE16(jvhp->signature) == kHFSPlusSigWord || SWAP_BE16(jvhp->signature) == kHFSXSigWord) {
printf ("hfs(2): Journal replay fail. Writing lastMountVersion as FSK!\n");
jvhp->lastMountedVersion = SWAP_BE32(kFSKMountVersion);
buf_bwrite(bp);
} else {
buf_brelse(bp);
}
bp = NULL;
} else if (bp) {
buf_brelse(bp);
bp = NULL;
}
}
if ( !(vfs_flags(mp) & MNT_ROOTFS)) {
retval = EINVAL;
goto error_exit;
}
}
}
retval = hfs_MountHFSPlusVolume(hfsmp, vhp, embeddedOffset, disksize, p, args, cred);
}
if (retval)
(void) hfs_relconverter(0);
}
hfsmp->hfs_last_mounted_mtime = hfsmp->hfs_mtime;
if ( retval ) {
goto error_exit;
}
mp->mnt_vfsstat.f_fsid.val[0] = (long)dev;
mp->mnt_vfsstat.f_fsid.val[1] = vfs_typenum(mp);
vfs_setmaxsymlen(mp, 0);
mp->mnt_vtable->vfc_threadsafe = TRUE;
mp->mnt_vtable->vfc_vfsflags |= VFC_VFSNATIVEXATTR;
if (args) {
hfsmp->hfs_freespace_notify_warninglimit =
MIN(HFS_LOWDISKTRIGGERLEVEL / HFSTOVCB(hfsmp)->blockSize,
(HFSTOVCB(hfsmp)->totalBlocks / 100) * HFS_LOWDISKTRIGGERFRACTION);
hfsmp->hfs_freespace_notify_desiredlevel =
MIN(HFS_LOWDISKSHUTOFFLEVEL / HFSTOVCB(hfsmp)->blockSize,
(HFSTOVCB(hfsmp)->totalBlocks / 100) * HFS_LOWDISKSHUTOFFFRACTION);
} else {
hfsmp->hfs_freespace_notify_warninglimit =
MIN(HFS_ROOTLOWDISKTRIGGERLEVEL / HFSTOVCB(hfsmp)->blockSize,
(HFSTOVCB(hfsmp)->totalBlocks / 100) * HFS_ROOTLOWDISKTRIGGERFRACTION);
hfsmp->hfs_freespace_notify_desiredlevel =
MIN(HFS_ROOTLOWDISKSHUTOFFLEVEL / HFSTOVCB(hfsmp)->blockSize,
(HFSTOVCB(hfsmp)->totalBlocks / 100) * HFS_ROOTLOWDISKSHUTOFFFRACTION);
};
hfsmp->hfs_notification_conditions = 0;
hfs_generate_volume_notifications(hfsmp);
if (ronly == 0) {
(void) hfs_flushvolumeheader(hfsmp, MNT_WAIT, 0);
}
FREE(mdbp, M_TEMP);
return (0);
error_exit:
if (bp)
buf_brelse(bp);
if (mdbp)
FREE(mdbp, M_TEMP);
if (hfsmp && hfsmp->jvp && hfsmp->jvp != hfsmp->hfs_devvp) {
(void)VNOP_CLOSE(hfsmp->jvp, ronly ? FREAD : FREAD|FWRITE, context);
hfsmp->jvp = NULL;
}
if (hfsmp) {
FREE(hfsmp, M_HFSMNT);
vfs_setfsprivate(mp, NULL);
}
return (retval);
}
static int
hfs_start(__unused struct mount *mp, __unused int flags, __unused vfs_context_t context)
{
return (0);
}
static int
hfs_unmount(struct mount *mp, int mntflags, vfs_context_t context)
{
struct proc *p = vfs_context_proc(context);
struct hfsmount *hfsmp = VFSTOHFS(mp);
int retval = E_NONE;
int flags;
int force;
int started_tr = 0;
flags = 0;
force = 0;
if (mntflags & MNT_FORCE) {
flags |= FORCECLOSE;
force = 1;
}
if ((retval = hfs_flushfiles(mp, flags, p)) && !force)
return (retval);
if (hfsmp->hfs_flags & HFS_METADATA_ZONE)
(void) hfs_recording_suspend(hfsmp);
if ((hfsmp->hfs_flags & HFS_READ_ONLY) == 0) {
hfs_start_transaction(hfsmp);
started_tr = 1;
if (hfsmp->hfs_attribute_vp) {
(void) hfs_lock(VTOC(hfsmp->hfs_attribute_vp), HFS_EXCLUSIVE_LOCK);
retval = hfs_fsync(hfsmp->hfs_attribute_vp, MNT_WAIT, 0, p);
hfs_unlock(VTOC(hfsmp->hfs_attribute_vp));
if (retval && !force)
goto err_exit;
}
(void) hfs_lock(VTOC(hfsmp->hfs_catalog_vp), HFS_EXCLUSIVE_LOCK);
retval = hfs_fsync(hfsmp->hfs_catalog_vp, MNT_WAIT, 0, p);
hfs_unlock(VTOC(hfsmp->hfs_catalog_vp));
if (retval && !force)
goto err_exit;
(void) hfs_lock(VTOC(hfsmp->hfs_extents_vp), HFS_EXCLUSIVE_LOCK);
retval = hfs_fsync(hfsmp->hfs_extents_vp, MNT_WAIT, 0, p);
hfs_unlock(VTOC(hfsmp->hfs_extents_vp));
if (retval && !force)
goto err_exit;
if (hfsmp->hfs_allocation_vp) {
(void) hfs_lock(VTOC(hfsmp->hfs_allocation_vp), HFS_EXCLUSIVE_LOCK);
retval = hfs_fsync(hfsmp->hfs_allocation_vp, MNT_WAIT, 0, p);
hfs_unlock(VTOC(hfsmp->hfs_allocation_vp));
if (retval && !force)
goto err_exit;
}
if (hfsmp->hfc_filevp && vnode_issystem(hfsmp->hfc_filevp)) {
retval = hfs_fsync(hfsmp->hfc_filevp, MNT_WAIT, 0, p);
if (retval && !force)
goto err_exit;
}
#if 0
if (HFSTOVCB(hfsmp)->vcbFlags & kHFS_DamagedVolume) {
HFSTOVCB(hfsmp)->vcbAtrb &= ~kHFSVolumeUnmountedMask;
} else {
HFSTOVCB(hfsmp)->vcbAtrb |= kHFSVolumeUnmountedMask;
}
#else
HFSTOVCB(hfsmp)->vcbAtrb |= kHFSVolumeUnmountedMask;
#endif
retval = hfs_flushvolumeheader(hfsmp, MNT_WAIT, 0);
if (retval) {
HFSTOVCB(hfsmp)->vcbAtrb &= ~kHFSVolumeUnmountedMask;
if (!force)
goto err_exit;
}
hfs_end_transaction(hfsmp);
started_tr = 0;
}
if (hfsmp->jnl) {
journal_flush(hfsmp->jnl);
}
(void) hfsUnmount(hfsmp, p);
(void) vflush(mp, NULLVP, FORCECLOSE);
if (HFSTOVCB(hfsmp)->vcbSigWord == kHFSSigWord)
(void) hfs_relconverter(hfsmp->hfs_encoding);
if (hfsmp->jnl) {
journal_close(hfsmp->jnl);
hfsmp->jnl = NULL;
}
VNOP_FSYNC(hfsmp->hfs_devvp, MNT_WAIT, context);
if (hfsmp->jvp && hfsmp->jvp != hfsmp->hfs_devvp) {
retval = VNOP_CLOSE(hfsmp->jvp,
hfsmp->hfs_flags & HFS_READ_ONLY ? FREAD : FREAD|FWRITE,
context);
vnode_put(hfsmp->jvp);
hfsmp->jvp = NULL;
}
#ifdef HFS_SPARSE_DEV
if ((hfsmp->hfs_flags & HFS_HAS_SPARSE_DEVICE) && hfsmp->hfs_backingfs_rootvp) {
struct vnode * tmpvp;
hfsmp->hfs_flags &= ~HFS_HAS_SPARSE_DEVICE;
tmpvp = hfsmp->hfs_backingfs_rootvp;
hfsmp->hfs_backingfs_rootvp = NULLVP;
vnode_rele(tmpvp);
}
#endif
lck_mtx_destroy(&hfsmp->hfc_mutex, hfs_mutex_group);
FREE(hfsmp, M_HFSMNT);
return (0);
err_exit:
if (started_tr) {
hfs_end_transaction(hfsmp);
}
return retval;
}
static int
hfs_vfs_root(struct mount *mp, struct vnode **vpp, __unused vfs_context_t context)
{
return hfs_vget(VFSTOHFS(mp), (cnid_t)kHFSRootFolderID, vpp, 1);
}
static int
hfs_quotactl(struct mount *mp, int cmds, uid_t uid, caddr_t datap, vfs_context_t context)
{
struct proc *p = vfs_context_proc(context);
int cmd, type, error;
#if !QUOTA
return (ENOTSUP);
#else
if (uid == -1)
uid = vfs_context_ucred(context)->cr_ruid;
cmd = cmds >> SUBCMDSHIFT;
switch (cmd) {
case Q_SYNC:
case Q_QUOTASTAT:
break;
case Q_GETQUOTA:
if (uid == vfs_context_ucred(context)->cr_ruid)
break;
default:
if ( (error = vfs_context_suser(context)) )
return (error);
}
type = cmds & SUBCMDMASK;
if ((u_int)type >= MAXQUOTAS)
return (EINVAL);
if (vfs_busy(mp, LK_NOWAIT))
return (0);
switch (cmd) {
case Q_QUOTAON:
error = hfs_quotaon(p, mp, type, datap);
break;
case Q_QUOTAOFF:
error = hfs_quotaoff(p, mp, type);
break;
case Q_SETQUOTA:
error = hfs_setquota(mp, uid, type, datap);
break;
case Q_SETUSE:
error = hfs_setuse(mp, uid, type, datap);
break;
case Q_GETQUOTA:
error = hfs_getquota(mp, uid, type, datap);
break;
case Q_SYNC:
error = hfs_qsync(mp);
break;
case Q_QUOTASTAT:
error = hfs_quotastat(mp, type, datap);
break;
default:
error = EINVAL;
break;
}
vfs_unbusy(mp);
return (error);
#endif
}
#define HFS_SUBTYPE_JOURNALED 0x01
#define HFS_SUBTYPE_CASESENSITIVE 0x02
#define HFS_SUBTYPE_STANDARDHFS 0x80
static int
hfs_statfs(struct mount *mp, register struct vfsstatfs *sbp, __unused vfs_context_t context)
{
ExtendedVCB *vcb = VFSTOVCB(mp);
struct hfsmount *hfsmp = VFSTOHFS(mp);
u_long freeCNIDs;
uint16_t subtype = 0;
freeCNIDs = (u_long)0xFFFFFFFF - (u_long)vcb->vcbNxtCNID;
sbp->f_bsize = (uint32_t)vcb->blockSize;
sbp->f_iosize = (size_t)(MAX_UPL_TRANSFER * PAGE_SIZE);
sbp->f_blocks = (uint64_t)((unsigned long)vcb->totalBlocks);
sbp->f_bfree = (uint64_t)((unsigned long )hfs_freeblks(hfsmp, 0));
sbp->f_bavail = (uint64_t)((unsigned long )hfs_freeblks(hfsmp, 1));
sbp->f_files = (uint64_t)((unsigned long )(vcb->totalBlocks - 2));
sbp->f_ffree = (uint64_t)((unsigned long )(MIN(freeCNIDs, sbp->f_bavail)));
if (hfsmp->hfs_flags & HFS_STANDARD) {
subtype = HFS_SUBTYPE_STANDARDHFS;
} else {
if (hfsmp->jnl)
subtype |= HFS_SUBTYPE_JOURNALED;
if (hfsmp->hfs_flags & HFS_CASE_SENSITIVE)
subtype |= HFS_SUBTYPE_CASESENSITIVE;
}
sbp->f_fssubtype = subtype;
return (0);
}
__private_extern__
void
hfs_sync_metadata(void *arg)
{
struct mount *mp = (struct mount *)arg;
struct hfsmount *hfsmp;
ExtendedVCB *vcb;
buf_t bp;
int sectorsize, retval;
daddr64_t priIDSector;
hfsmp = VFSTOHFS(mp);
vcb = HFSTOVCB(hfsmp);
sectorsize = hfsmp->hfs_phys_block_size;
priIDSector = (daddr64_t)((vcb->hfsPlusIOPosOffset / sectorsize) +
HFS_PRI_SECTOR(sectorsize));
retval = (int)buf_meta_bread(hfsmp->hfs_devvp, priIDSector, sectorsize, NOCRED, &bp);
if (retval != 0) {
panic("hfs: sync_metadata: can't read super-block?! (retval 0x%x, priIDSector)\n",
retval, priIDSector);
}
if (retval == 0 && ((buf_flags(bp) & (B_DELWRI | B_LOCKED)) == B_DELWRI)) {
buf_bwrite(bp);
} else if (bp) {
buf_brelse(bp);
}
if (hfsmp->hfs_alt_id_sector) {
retval = (int)buf_meta_bread(hfsmp->hfs_devvp, hfsmp->hfs_alt_id_sector, sectorsize, NOCRED, &bp);
if (retval == 0 && ((buf_flags(bp) & (B_DELWRI | B_LOCKED)) == B_DELWRI)) {
buf_bwrite(bp);
} else if (bp) {
buf_brelse(bp);
}
}
}
struct hfs_sync_cargs {
kauth_cred_t cred;
struct proc *p;
int waitfor;
int error;
};
static int
hfs_sync_callback(struct vnode *vp, void *cargs)
{
struct cnode *cp;
struct hfs_sync_cargs *args;
int error;
args = (struct hfs_sync_cargs *)cargs;
if (hfs_lock(VTOC(vp), HFS_EXCLUSIVE_LOCK) != 0) {
return (VNODE_RETURNED);
}
cp = VTOC(vp);
if ((cp->c_flag & C_MODIFIED) ||
(cp->c_touch_acctime | cp->c_touch_chgtime | cp->c_touch_modtime) ||
vnode_hasdirtyblks(vp)) {
error = hfs_fsync(vp, args->waitfor, 0, args->p);
if (error)
args->error = error;
}
hfs_unlock(cp);
return (VNODE_RETURNED);
}
static int
hfs_sync(struct mount *mp, int waitfor, vfs_context_t context)
{
struct proc *p = vfs_context_proc(context);
struct cnode *cp;
struct hfsmount *hfsmp;
ExtendedVCB *vcb;
struct vnode *meta_vp[4];
int i;
int error, allerror = 0;
struct hfs_sync_cargs args;
if (((uint32_t)vfs_flags(mp)) & MNT_UPDATE)
return (0);
hfsmp = VFSTOHFS(mp);
if (hfsmp->hfs_flags & HFS_READ_ONLY)
return (EROFS);
if (!lck_rw_try_lock_shared(&hfsmp->hfs_insync))
return 0;
args.cred = vfs_context_proc(context);
args.waitfor = waitfor;
args.p = p;
args.error = 0;
vnode_iterate(mp, 0, hfs_sync_callback, (void *)&args);
if (args.error)
allerror = args.error;
vcb = HFSTOVCB(hfsmp);
meta_vp[0] = vcb->extentsRefNum;
meta_vp[1] = vcb->catalogRefNum;
meta_vp[2] = vcb->allocationsRefNum;
meta_vp[3] = hfsmp->hfs_attribute_vp;
for (i = 0; i < 4; ++i) {
struct vnode *btvp;
btvp = meta_vp[i];;
if ((btvp==0) || (vnode_mount(btvp) != mp))
continue;
(void) hfs_lock(VTOC(btvp), HFS_EXCLUSIVE_LOCK);
cp = VTOC(btvp);
if (((cp->c_flag & C_MODIFIED) == 0) &&
(cp->c_touch_acctime == 0) &&
(cp->c_touch_chgtime == 0) &&
(cp->c_touch_modtime == 0) &&
vnode_hasdirtyblks(btvp) == 0) {
hfs_unlock(VTOC(btvp));
continue;
}
error = vnode_get(btvp);
if (error) {
hfs_unlock(VTOC(btvp));
continue;
}
if ((error = hfs_fsync(btvp, waitfor, 0, p)))
allerror = error;
hfs_unlock(cp);
vnode_put(btvp);
};
if (vcb->vcbSigWord == kHFSSigWord) {
if ((error = VNOP_FSYNC(hfsmp->hfs_devvp, waitfor, context))) {
allerror = error;
}
}
#if QUOTA
hfs_qsync(mp);
#endif
hfs_hotfilesync(hfsmp, p);
if (IsVCBDirty(vcb)) {
error = hfs_flushvolumeheader(hfsmp, waitfor, 0);
if (error)
allerror = error;
}
if (hfsmp->jnl) {
journal_flush(hfsmp->jnl);
}
lck_rw_unlock_shared(&hfsmp->hfs_insync);
return (allerror);
}
static int
hfs_fhtovp(struct mount *mp, int fhlen, unsigned char *fhp, struct vnode **vpp, vfs_context_t context)
{
struct hfsfid *hfsfhp;
struct vnode *nvp;
int result;
*vpp = NULL;
hfsfhp = (struct hfsfid *)fhp;
if (fhlen < sizeof(struct hfsfid))
return (EINVAL);
result = hfs_vget(VFSTOHFS(mp), hfsfhp->hfsfid_cnid, &nvp, 0);
if (result) {
if (result == ENOENT)
result = ESTALE;
return result;
}
if ((hfsfhp->hfsfid_gen < VTOC(nvp)->c_itime)) {
hfs_unlock(VTOC(nvp));
vnode_put(nvp);
return (ESTALE);
}
*vpp = nvp;
hfs_unlock(VTOC(nvp));
return (0);
}
static int
hfs_vptofh(struct vnode *vp, int *fhlenp, unsigned char *fhp, vfs_context_t context)
{
struct cnode *cp;
struct hfsfid *hfsfhp;
if (ISHFS(VTOVCB(vp)))
return (ENOTSUP);
if (*fhlenp < (int)sizeof(struct hfsfid))
return (EOVERFLOW);
cp = VTOC(vp);
hfsfhp = (struct hfsfid *)fhp;
hfsfhp->hfsfid_cnid = cp->c_fileid;
hfsfhp->hfsfid_gen = cp->c_itime;
*fhlenp = sizeof(struct hfsfid);
return (0);
}
static int
hfs_init(__unused struct vfsconf *vfsp)
{
static int done = 0;
if (done)
return (0);
done = 1;
hfs_chashinit();
hfs_converterinit();
#if QUOTA
dqinit();
#endif
BTReserveSetup();
hfs_lock_attr = lck_attr_alloc_init();
hfs_group_attr = lck_grp_attr_alloc_init();
hfs_mutex_group = lck_grp_alloc_init("hfs-mutex", hfs_group_attr);
hfs_rwlock_group = lck_grp_alloc_init("hfs-rwlock", hfs_group_attr);
return (0);
}
static int
hfs_getmountpoint(vp, hfsmpp)
struct vnode *vp;
struct hfsmount **hfsmpp;
{
struct hfsmount * hfsmp;
char fstypename[MFSNAMELEN];
if (vp == NULL)
return (EINVAL);
if (!vnode_isvroot(vp))
return (EINVAL);
vnode_vfsname(vp, fstypename);
if (strcmp(fstypename, "hfs") != 0)
return (EINVAL);
hfsmp = VTOHFS(vp);
if (HFSTOVCB(hfsmp)->vcbSigWord == kHFSSigWord)
return (EINVAL);
*hfsmpp = hfsmp;
return (0);
}
#include <sys/filedesc.h>
static int
hfs_sysctl(int *name, __unused u_int namelen, user_addr_t oldp, size_t *oldlenp,
user_addr_t newp, size_t newlen, vfs_context_t context)
{
struct proc *p = vfs_context_proc(context);
int error;
struct hfsmount *hfsmp;
if (name[0] == HFS_ENCODINGBIAS) {
u_int32_t bias;
bias = hfs_getencodingbias();
error = sysctl_int(oldp, oldlenp, newp, newlen, &bias);
if (error == 0 && newp)
hfs_setencodingbias(bias);
return (error);
} else if (name[0] == HFS_EXTEND_FS) {
u_int64_t newsize;
vnode_t vp = p->p_fd->fd_cdir;
if (newp == USER_ADDR_NULL || vp == NULL)
return (EINVAL);
if ((error = hfs_getmountpoint(vp, &hfsmp)))
return (error);
error = sysctl_quad(oldp, oldlenp, newp, newlen, &newsize);
if (error)
return (error);
error = hfs_extendfs(hfsmp, newsize, context);
return (error);
} else if (name[0] == HFS_ENCODINGHINT) {
size_t bufsize;
size_t bytes;
u_int32_t hint;
u_int16_t *unicode_name;
char *filename;
bufsize = MAX(newlen * 3, MAXPATHLEN);
MALLOC(filename, char *, newlen, M_TEMP, M_WAITOK);
MALLOC(unicode_name, u_int16_t *, bufsize, M_TEMP, M_WAITOK);
error = copyin(newp, (caddr_t)filename, newlen);
if (error == 0) {
error = utf8_decodestr(filename, newlen - 1, unicode_name,
&bytes, bufsize, 0, UTF_DECOMPOSED);
if (error == 0) {
hint = hfs_pickencoding(unicode_name, bytes / 2);
error = sysctl_int(oldp, oldlenp, USER_ADDR_NULL, 0, &hint);
}
}
FREE(unicode_name, M_TEMP);
FREE(filename, M_TEMP);
return (error);
} else if (name[0] == HFS_ENABLE_JOURNALING) {
struct vnode *vp = p->p_fd->fd_cdir, *jvp;
ExtendedVCB *vcb;
struct cat_attr jnl_attr, jinfo_attr;
struct cat_fork jnl_fork, jinfo_fork;
void *jnl = NULL;
int lockflags;
if (!is_suser()) {
return (EPERM);
}
if (vp == NULL)
return EINVAL;
hfsmp = VTOHFS(vp);
if (hfsmp->hfs_flags & HFS_READ_ONLY) {
return EROFS;
}
if (HFSTOVCB(hfsmp)->vcbSigWord == kHFSSigWord) {
printf("hfs: can't make a plain hfs volume journaled.\n");
return EINVAL;
}
if (hfsmp->jnl) {
printf("hfs: volume @ mp 0x%x is already journaled!\n", vnode_mount(vp));
return EAGAIN;
}
vcb = HFSTOVCB(hfsmp);
lockflags = hfs_systemfile_lock(hfsmp, SFL_CATALOG | SFL_EXTENTS, HFS_EXCLUSIVE_LOCK);
if (BTHasContiguousNodes(VTOF(vcb->catalogRefNum)) == 0 ||
BTHasContiguousNodes(VTOF(vcb->extentsRefNum)) == 0) {
printf("hfs: volume has a btree w/non-contiguous nodes. can not enable journaling.\n");
hfs_systemfile_unlock(hfsmp, lockflags);
return EINVAL;
}
hfs_systemfile_unlock(hfsmp, lockflags);
if ( GetFileInfo(vcb, kHFSRootFolderID, ".journal_info_block", &jinfo_attr, &jinfo_fork) == 0
|| GetFileInfo(vcb, kHFSRootFolderID, ".journal", &jnl_attr, &jnl_fork) == 0) {
return EINVAL;
}
hfs_sync(hfsmp->hfs_mp, MNT_WAIT, context);
printf("hfs: Initializing the journal (joffset 0x%llx sz 0x%llx)...\n",
(off_t)name[2], (off_t)name[3]);
jvp = hfsmp->hfs_devvp;
jnl = journal_create(jvp,
(off_t)name[2] * (off_t)HFSTOVCB(hfsmp)->blockSize
+ HFSTOVCB(hfsmp)->hfsPlusIOPosOffset,
(off_t)((unsigned)name[3]),
hfsmp->hfs_devvp,
hfsmp->hfs_phys_block_size,
0,
0,
hfs_sync_metadata, hfsmp->hfs_mp);
if (jnl == NULL) {
printf("hfs: FAILED to create the journal!\n");
if (jvp && jvp != hfsmp->hfs_devvp) {
VNOP_CLOSE(jvp, hfsmp->hfs_flags & HFS_READ_ONLY ? FREAD : FREAD|FWRITE, context);
}
jvp = NULL;
return EINVAL;
}
hfs_global_exclusive_lock_acquire(hfsmp);
HFSTOVCB(hfsmp)->vcbJinfoBlock = name[1];
HFSTOVCB(hfsmp)->vcbAtrb |= kHFSVolumeJournaledMask;
hfsmp->jvp = jvp;
hfsmp->jnl = jnl;
hfsmp->jnl_start = (u_int32_t)name[2];
hfsmp->jnl_size = (off_t)((unsigned)name[3]);
hfsmp->hfs_jnlinfoblkid = jinfo_attr.ca_fileid;
hfsmp->hfs_jnlfileid = jnl_attr.ca_fileid;
vfs_setflags(hfsmp->hfs_mp, (uint64_t)((unsigned int)MNT_JOURNALED));
hfs_global_exclusive_lock_release(hfsmp);
hfs_flushvolumeheader(hfsmp, MNT_WAIT, 1);
return 0;
} else if (name[0] == HFS_DISABLE_JOURNALING) {
struct vnode *vp = p->p_fd->fd_cdir;
if (!is_suser()) {
return (EPERM);
}
if (vp == NULL)
return EINVAL;
hfsmp = VTOHFS(vp);
printf("hfs: disabling journaling for mount @ 0x%x\n", vnode_mount(vp));
hfs_global_exclusive_lock_acquire(hfsmp);
journal_close(hfsmp->jnl);
hfsmp->jnl = NULL;
if (hfsmp->jvp && hfsmp->jvp != hfsmp->hfs_devvp) {
VNOP_CLOSE(hfsmp->jvp, hfsmp->hfs_flags & HFS_READ_ONLY ? FREAD : FREAD|FWRITE, context);
}
hfsmp->jvp = NULL;
vfs_clearflags(hfsmp->hfs_mp, (uint64_t)((unsigned int)MNT_JOURNALED));
hfsmp->jnl_start = 0;
hfsmp->hfs_jnlinfoblkid = 0;
hfsmp->hfs_jnlfileid = 0;
HFSTOVCB(hfsmp)->vcbAtrb &= ~kHFSVolumeJournaledMask;
hfs_global_exclusive_lock_release(hfsmp);
hfs_flushvolumeheader(hfsmp, MNT_WAIT, 1);
return 0;
} else if (name[0] == HFS_GET_JOURNAL_INFO) {
struct vnode *vp = p->p_fd->fd_cdir;
off_t jnl_start, jnl_size;
if (vp == NULL)
return EINVAL;
hfsmp = VTOHFS(vp);
if (hfsmp->jnl == NULL) {
jnl_start = 0;
jnl_size = 0;
} else {
jnl_start = (off_t)(hfsmp->jnl_start * HFSTOVCB(hfsmp)->blockSize) + (off_t)HFSTOVCB(hfsmp)->hfsPlusIOPosOffset;
jnl_size = (off_t)hfsmp->jnl_size;
}
if ((error = copyout((caddr_t)&jnl_start, CAST_USER_ADDR_T(name[1]), sizeof(off_t))) != 0) {
return error;
}
if ((error = copyout((caddr_t)&jnl_size, CAST_USER_ADDR_T(name[2]), sizeof(off_t))) != 0) {
return error;
}
return 0;
} else if (name[0] == HFS_SET_PKG_EXTENSIONS) {
return set_package_extensions_table((void *)name[1], name[2], name[3]);
} else if (name[0] == VFS_CTL_QUERY) {
struct sysctl_req *req;
struct vfsidctl vc;
struct user_vfsidctl user_vc;
struct mount *mp;
struct vfsquery vq;
boolean_t is_64_bit;
is_64_bit = proc_is64bit(p);
req = CAST_DOWN(struct sysctl_req *, oldp);
if (is_64_bit) {
error = SYSCTL_IN(req, &user_vc, sizeof(user_vc));
if (error) return (error);
mp = vfs_getvfs(&user_vc.vc_fsid);
}
else {
error = SYSCTL_IN(req, &vc, sizeof(vc));
if (error) return (error);
mp = vfs_getvfs(&vc.vc_fsid);
}
if (mp == NULL) return (ENOENT);
hfsmp = VFSTOHFS(mp);
bzero(&vq, sizeof(vq));
vq.vq_flags = hfsmp->hfs_notification_conditions;
return SYSCTL_OUT(req, &vq, sizeof(vq));;
};
return (ENOTSUP);
}
static int
hfs_vfs_vget(struct mount *mp, ino64_t ino, struct vnode **vpp, __unused vfs_context_t context)
{
return hfs_vget(VFSTOHFS(mp), (cnid_t)ino, vpp, 1);
}
__private_extern__
int
hfs_vget(struct hfsmount *hfsmp, cnid_t cnid, struct vnode **vpp, int skiplock)
{
struct vnode *vp = NULL;
struct cat_desc cndesc;
struct cat_attr cnattr;
struct cat_fork cnfork;
struct componentname cn;
u_int32_t linkref = 0;
int error;
if ((cnid < kHFSFirstUserCatalogNodeID)
&& (cnid != kHFSRootFolderID && cnid != kHFSRootParentID))
return (ENOENT);
if (cnid == hfsmp->hfs_privdir_desc.cd_cnid)
return (ENOENT);
vp = hfs_chash_getvnode(hfsmp->hfs_raw_dev, cnid, 0, skiplock);
if (vp) {
*vpp = vp;
return(0);
}
bzero(&cndesc, sizeof(cndesc));
bzero(&cnattr, sizeof(cnattr));
bzero(&cnfork, sizeof(cnfork));
if (cnid == kHFSRootParentID) {
static char hfs_rootname[] = "/";
cndesc.cd_nameptr = &hfs_rootname[0];
cndesc.cd_namelen = 1;
cndesc.cd_parentcnid = kHFSRootParentID;
cndesc.cd_cnid = kHFSRootFolderID;
cndesc.cd_flags = CD_ISDIR;
cnattr.ca_fileid = kHFSRootFolderID;
cnattr.ca_nlink = 2;
cnattr.ca_entries = 1;
cnattr.ca_mode = (S_IFDIR | S_IRWXU | S_IRWXG | S_IRWXO);
} else {
int lockflags;
lockflags = hfs_systemfile_lock(hfsmp, SFL_CATALOG, HFS_SHARED_LOCK);
error = cat_idlookup(hfsmp, cnid, &cndesc, &cnattr, &cnfork);
hfs_systemfile_unlock(hfsmp, lockflags);
if (error) {
*vpp = NULL;
return (error);
}
if ((cndesc.cd_parentcnid == hfsmp->hfs_privdir_desc.cd_cnid) &&
(bcmp(cndesc.cd_nameptr, HFS_INODE_PREFIX, HFS_INODE_PREFIX_LEN) == 0)) {
linkref = strtoul((const char*)&cndesc.cd_nameptr[HFS_INODE_PREFIX_LEN], NULL, 10);
cnattr.ca_rdev = linkref;
if (cnattr.ca_attrblks != 0) {
cndesc.cd_parentcnid = cnattr.ca_attrblks;
}
}
}
MALLOC_ZONE(cn.cn_pnbuf, caddr_t, MAXPATHLEN, M_NAMEI, M_WAITOK);
cn.cn_nameiop = LOOKUP;
cn.cn_flags = ISLASTCN | HASBUF;
cn.cn_context = NULL;
cn.cn_pnlen = MAXPATHLEN;
cn.cn_nameptr = cn.cn_pnbuf;
cn.cn_namelen = cndesc.cd_namelen;
cn.cn_hash = 0;
cn.cn_consume = 0;
bcopy(cndesc.cd_nameptr, cn.cn_nameptr, cndesc.cd_namelen + 1);
error = hfs_getnewvnode(hfsmp, NULLVP, &cn, &cndesc, 0, &cnattr, &cnfork, &vp);
if (error == 0 && linkref != 0) {
VTOC(vp)->c_flag |= C_HARDLINK;
}
FREE_ZONE(cn.cn_pnbuf, cn.cn_pnlen, M_NAMEI);
cat_releasedesc(&cndesc);
*vpp = vp;
if (vp && skiplock)
hfs_unlock(VTOC(vp));
return (error);
}
static int
hfs_flushfiles(struct mount *mp, int flags, struct proc *p)
{
struct hfsmount *hfsmp;
struct vnode *skipvp = NULLVP;
int quotafilecnt;
int i;
int error;
hfsmp = VFSTOHFS(mp);
#if QUOTA
quotafilecnt = 0;
if (((unsigned int)vfs_flags(mp)) & MNT_QUOTA) {
for (i = 0; i < MAXQUOTAS; i++) {
if (hfsmp->hfs_qfiles[i].qf_vp != NULLVP)
++quotafilecnt;
}
skipvp = hfs_chash_getvnode(hfsmp->hfs_raw_dev, kHFSRootFolderID, 0, 0);
}
#endif
error = vflush(mp, skipvp, SKIPSYSTEM | SKIPSWAP | flags);
if (error != 0)
return(error);
error = vflush(mp, skipvp, SKIPSYSTEM | flags);
#if QUOTA
if (((unsigned int)vfs_flags(mp)) & MNT_QUOTA) {
if (skipvp) {
if ((error == 0) &&
(vnode_isinuse(skipvp, quotafilecnt))) {
error = EBUSY;
}
hfs_unlock(VTOC(skipvp));
vnode_put(skipvp);
}
if (error && (flags & FORCECLOSE) == 0)
return (error);
for (i = 0; i < MAXQUOTAS; i++) {
if (hfsmp->hfs_qfiles[i].qf_vp == NULLVP)
continue;
hfs_quotaoff(p, mp, i);
}
error = vflush(mp, NULLVP, SKIPSYSTEM | flags);
}
#endif
return (error);
}
__private_extern__
void
hfs_setencodingbits(struct hfsmount *hfsmp, u_int32_t encoding)
{
#define kIndexMacUkrainian 48
#define kIndexMacFarsi 49
UInt32 index;
switch (encoding) {
case kTextEncodingMacUkrainian:
index = kIndexMacUkrainian;
break;
case kTextEncodingMacFarsi:
index = kIndexMacFarsi;
break;
default:
index = encoding;
break;
}
if (index < 64) {
HFS_MOUNT_LOCK(hfsmp, TRUE)
hfsmp->encodingsBitmap |= (u_int64_t)(1ULL << index);
hfsmp->vcbFlags |= 0xFF00;
HFS_MOUNT_UNLOCK(hfsmp, TRUE);
}
}
__private_extern__
int
hfs_volupdate(struct hfsmount *hfsmp, enum volop op, int inroot)
{
struct timeval tv;
microtime(&tv);
lck_mtx_lock(&hfsmp->hfs_mutex);
hfsmp->vcbFlags |= 0xFF00;
hfsmp->hfs_mtime = tv.tv_sec;
switch (op) {
case VOL_UPDATE:
break;
case VOL_MKDIR:
if (hfsmp->hfs_dircount != 0xFFFFFFFF)
++hfsmp->hfs_dircount;
if (inroot && hfsmp->vcbNmRtDirs != 0xFFFF)
++hfsmp->vcbNmRtDirs;
break;
case VOL_RMDIR:
if (hfsmp->hfs_dircount != 0)
--hfsmp->hfs_dircount;
if (inroot && hfsmp->vcbNmRtDirs != 0xFFFF)
--hfsmp->vcbNmRtDirs;
break;
case VOL_MKFILE:
if (hfsmp->hfs_filecount != 0xFFFFFFFF)
++hfsmp->hfs_filecount;
if (inroot && hfsmp->vcbNmFls != 0xFFFF)
++hfsmp->vcbNmFls;
break;
case VOL_RMFILE:
if (hfsmp->hfs_filecount != 0)
--hfsmp->hfs_filecount;
if (inroot && hfsmp->vcbNmFls != 0xFFFF)
--hfsmp->vcbNmFls;
break;
}
lck_mtx_unlock(&hfsmp->hfs_mutex);
if (hfsmp->jnl) {
hfs_flushvolumeheader(hfsmp, 0, 0);
}
return (0);
}
static int
hfs_flushMDB(struct hfsmount *hfsmp, int waitfor, int altflush)
{
ExtendedVCB *vcb = HFSTOVCB(hfsmp);
struct filefork *fp;
HFSMasterDirectoryBlock *mdb;
struct buf *bp = NULL;
int retval;
int sectorsize;
ByteCount namelen;
sectorsize = hfsmp->hfs_phys_block_size;
retval = (int)buf_bread(hfsmp->hfs_devvp, (daddr64_t)HFS_PRI_SECTOR(sectorsize), sectorsize, NOCRED, &bp);
if (retval) {
if (bp)
buf_brelse(bp);
return retval;
}
lck_mtx_lock(&hfsmp->hfs_mutex);
mdb = (HFSMasterDirectoryBlock *)(buf_dataptr(bp) + HFS_PRI_OFFSET(sectorsize));
mdb->drCrDate = SWAP_BE32 (UTCToLocal(to_hfs_time(vcb->vcbCrDate)));
mdb->drLsMod = SWAP_BE32 (UTCToLocal(to_hfs_time(vcb->vcbLsMod)));
mdb->drAtrb = SWAP_BE16 (vcb->vcbAtrb);
mdb->drNmFls = SWAP_BE16 (vcb->vcbNmFls);
mdb->drAllocPtr = SWAP_BE16 (vcb->nextAllocation);
mdb->drClpSiz = SWAP_BE32 (vcb->vcbClpSiz);
mdb->drNxtCNID = SWAP_BE32 (vcb->vcbNxtCNID);
mdb->drFreeBks = SWAP_BE16 (vcb->freeBlocks);
namelen = strlen(vcb->vcbVN);
retval = utf8_to_hfs(vcb, namelen, vcb->vcbVN, mdb->drVN);
if (retval)
retval = utf8_to_mac_roman(namelen, vcb->vcbVN, mdb->drVN);
mdb->drVolBkUp = SWAP_BE32 (UTCToLocal(to_hfs_time(vcb->vcbVolBkUp)));
mdb->drWrCnt = SWAP_BE32 (vcb->vcbWrCnt);
mdb->drNmRtDirs = SWAP_BE16 (vcb->vcbNmRtDirs);
mdb->drFilCnt = SWAP_BE32 (vcb->vcbFilCnt);
mdb->drDirCnt = SWAP_BE32 (vcb->vcbDirCnt);
bcopy(vcb->vcbFndrInfo, mdb->drFndrInfo, sizeof(mdb->drFndrInfo));
fp = VTOF(vcb->extentsRefNum);
mdb->drXTExtRec[0].startBlock = SWAP_BE16 (fp->ff_extents[0].startBlock);
mdb->drXTExtRec[0].blockCount = SWAP_BE16 (fp->ff_extents[0].blockCount);
mdb->drXTExtRec[1].startBlock = SWAP_BE16 (fp->ff_extents[1].startBlock);
mdb->drXTExtRec[1].blockCount = SWAP_BE16 (fp->ff_extents[1].blockCount);
mdb->drXTExtRec[2].startBlock = SWAP_BE16 (fp->ff_extents[2].startBlock);
mdb->drXTExtRec[2].blockCount = SWAP_BE16 (fp->ff_extents[2].blockCount);
mdb->drXTFlSize = SWAP_BE32 (fp->ff_blocks * vcb->blockSize);
mdb->drXTClpSiz = SWAP_BE32 (fp->ff_clumpsize);
FTOC(fp)->c_flag &= ~C_MODIFIED;
fp = VTOF(vcb->catalogRefNum);
mdb->drCTExtRec[0].startBlock = SWAP_BE16 (fp->ff_extents[0].startBlock);
mdb->drCTExtRec[0].blockCount = SWAP_BE16 (fp->ff_extents[0].blockCount);
mdb->drCTExtRec[1].startBlock = SWAP_BE16 (fp->ff_extents[1].startBlock);
mdb->drCTExtRec[1].blockCount = SWAP_BE16 (fp->ff_extents[1].blockCount);
mdb->drCTExtRec[2].startBlock = SWAP_BE16 (fp->ff_extents[2].startBlock);
mdb->drCTExtRec[2].blockCount = SWAP_BE16 (fp->ff_extents[2].blockCount);
mdb->drCTFlSize = SWAP_BE32 (fp->ff_blocks * vcb->blockSize);
mdb->drCTClpSiz = SWAP_BE32 (fp->ff_clumpsize);
FTOC(fp)->c_flag &= ~C_MODIFIED;
MarkVCBClean( vcb );
lck_mtx_unlock(&hfsmp->hfs_mutex);
if (altflush) {
struct buf *alt_bp = NULL;
if (buf_meta_bread(hfsmp->hfs_devvp, hfsmp->hfs_alt_id_sector, sectorsize, NOCRED, &alt_bp) == 0) {
bcopy(mdb, (char *)buf_dataptr(alt_bp) + HFS_ALT_OFFSET(sectorsize), kMDBSize);
(void) VNOP_BWRITE(alt_bp);
} else if (alt_bp)
buf_brelse(alt_bp);
}
if (waitfor != MNT_WAIT)
buf_bawrite(bp);
else
retval = VNOP_BWRITE(bp);
return (retval);
}
__private_extern__
int
hfs_flushvolumeheader(struct hfsmount *hfsmp, int waitfor, int altflush)
{
ExtendedVCB *vcb = HFSTOVCB(hfsmp);
struct filefork *fp;
HFSPlusVolumeHeader *volumeHeader;
int retval;
struct buf *bp;
int i;
int sectorsize;
daddr64_t priIDSector;
int critical = 0;
u_int16_t signature;
u_int16_t hfsversion;
if (hfsmp->hfs_flags & HFS_READ_ONLY) {
return(0);
}
if (vcb->vcbSigWord == kHFSSigWord)
return hfs_flushMDB(hfsmp, waitfor, altflush);
if (altflush)
critical = 1;
sectorsize = hfsmp->hfs_phys_block_size;
priIDSector = (daddr64_t)((vcb->hfsPlusIOPosOffset / sectorsize) +
HFS_PRI_SECTOR(sectorsize));
if (hfs_start_transaction(hfsmp) != 0) {
return EINVAL;
}
retval = (int)buf_meta_bread(hfsmp->hfs_devvp, priIDSector, sectorsize, NOCRED, &bp);
if (retval) {
if (bp)
buf_brelse(bp);
hfs_end_transaction(hfsmp);
printf("HFS: err %d reading VH blk (%s)\n", retval, vcb->vcbVN);
return (retval);
}
if (hfsmp->jnl) {
journal_modify_block_start(hfsmp->jnl, bp);
}
volumeHeader = (HFSPlusVolumeHeader *)((char *)buf_dataptr(bp) + HFS_PRI_OFFSET(sectorsize));
signature = SWAP_BE16 (volumeHeader->signature);
hfsversion = SWAP_BE16 (volumeHeader->version);
if ((signature != kHFSPlusSigWord && signature != kHFSXSigWord) ||
(hfsversion < kHFSPlusVersion) || (hfsversion > 100) ||
(SWAP_BE32 (volumeHeader->blockSize) != vcb->blockSize)) {
#if 1
panic("HFS: corrupt VH on %s, sig 0x%04x, ver %d, blksize %d",
vcb->vcbVN, signature, hfsversion,
SWAP_BE32 (volumeHeader->blockSize));
#endif
printf("HFS: corrupt VH blk (%s)\n", vcb->vcbVN);
buf_brelse(bp);
return (EIO);
}
if ((vcb->hfsPlusIOPosOffset != 0) &&
(SWAP_BE32 (volumeHeader->createDate) != vcb->localCreateDate)) {
struct buf *bp2;
HFSMasterDirectoryBlock *mdb;
retval = (int)buf_meta_bread(hfsmp->hfs_devvp, (daddr64_t)HFS_PRI_SECTOR(sectorsize),
sectorsize, NOCRED, &bp2);
if (retval) {
if (bp2)
buf_brelse(bp2);
retval = 0;
} else {
mdb = (HFSMasterDirectoryBlock *)(buf_dataptr(bp2) +
HFS_PRI_OFFSET(sectorsize));
if ( SWAP_BE32 (mdb->drCrDate) != vcb->localCreateDate )
{
if (hfsmp->jnl) {
journal_modify_block_start(hfsmp->jnl, bp2);
}
mdb->drCrDate = SWAP_BE32 (vcb->localCreateDate);
if (hfsmp->jnl) {
journal_modify_block_end(hfsmp->jnl, bp2);
} else {
(void) VNOP_BWRITE(bp2);
}
}
else
{
buf_brelse(bp2);
}
}
}
if (1 ) {
lck_mtx_lock(&hfsmp->hfs_mutex);
}
volumeHeader->attributes = SWAP_BE32 (vcb->vcbAtrb);
volumeHeader->journalInfoBlock = SWAP_BE32 (vcb->vcbJinfoBlock);
if (hfsmp->jnl) {
volumeHeader->lastMountedVersion = SWAP_BE32 (kHFSJMountVersion);
} else {
volumeHeader->lastMountedVersion = SWAP_BE32 (kHFSPlusMountVersion);
}
volumeHeader->createDate = SWAP_BE32 (vcb->localCreateDate);
volumeHeader->modifyDate = SWAP_BE32 (to_hfs_time(vcb->vcbLsMod));
volumeHeader->backupDate = SWAP_BE32 (to_hfs_time(vcb->vcbVolBkUp));
volumeHeader->fileCount = SWAP_BE32 (vcb->vcbFilCnt);
volumeHeader->folderCount = SWAP_BE32 (vcb->vcbDirCnt);
volumeHeader->totalBlocks = SWAP_BE32 (vcb->totalBlocks);
volumeHeader->freeBlocks = SWAP_BE32 (vcb->freeBlocks);
volumeHeader->nextAllocation = SWAP_BE32 (vcb->nextAllocation);
volumeHeader->rsrcClumpSize = SWAP_BE32 (vcb->vcbClpSiz);
volumeHeader->dataClumpSize = SWAP_BE32 (vcb->vcbClpSiz);
volumeHeader->nextCatalogID = SWAP_BE32 (vcb->vcbNxtCNID);
volumeHeader->writeCount = SWAP_BE32 (vcb->vcbWrCnt);
volumeHeader->encodingsBitmap = SWAP_BE64 (vcb->encodingsBitmap);
if (bcmp(vcb->vcbFndrInfo, volumeHeader->finderInfo, sizeof(volumeHeader->finderInfo)) != 0) {
bcopy(vcb->vcbFndrInfo, volumeHeader->finderInfo, sizeof(volumeHeader->finderInfo));
critical = 1;
}
fp = VTOF(vcb->extentsRefNum);
if (FTOC(fp)->c_flag & C_MODIFIED) {
for (i = 0; i < kHFSPlusExtentDensity; i++) {
volumeHeader->extentsFile.extents[i].startBlock =
SWAP_BE32 (fp->ff_extents[i].startBlock);
volumeHeader->extentsFile.extents[i].blockCount =
SWAP_BE32 (fp->ff_extents[i].blockCount);
}
volumeHeader->extentsFile.logicalSize = SWAP_BE64 (fp->ff_size);
volumeHeader->extentsFile.totalBlocks = SWAP_BE32 (fp->ff_blocks);
volumeHeader->extentsFile.clumpSize = SWAP_BE32 (fp->ff_clumpsize);
FTOC(fp)->c_flag &= ~C_MODIFIED;
}
fp = VTOF(vcb->catalogRefNum);
if (FTOC(fp)->c_flag & C_MODIFIED) {
for (i = 0; i < kHFSPlusExtentDensity; i++) {
volumeHeader->catalogFile.extents[i].startBlock =
SWAP_BE32 (fp->ff_extents[i].startBlock);
volumeHeader->catalogFile.extents[i].blockCount =
SWAP_BE32 (fp->ff_extents[i].blockCount);
}
volumeHeader->catalogFile.logicalSize = SWAP_BE64 (fp->ff_size);
volumeHeader->catalogFile.totalBlocks = SWAP_BE32 (fp->ff_blocks);
volumeHeader->catalogFile.clumpSize = SWAP_BE32 (fp->ff_clumpsize);
FTOC(fp)->c_flag &= ~C_MODIFIED;
}
fp = VTOF(vcb->allocationsRefNum);
if (FTOC(fp)->c_flag & C_MODIFIED) {
for (i = 0; i < kHFSPlusExtentDensity; i++) {
volumeHeader->allocationFile.extents[i].startBlock =
SWAP_BE32 (fp->ff_extents[i].startBlock);
volumeHeader->allocationFile.extents[i].blockCount =
SWAP_BE32 (fp->ff_extents[i].blockCount);
}
volumeHeader->allocationFile.logicalSize = SWAP_BE64 (fp->ff_size);
volumeHeader->allocationFile.totalBlocks = SWAP_BE32 (fp->ff_blocks);
volumeHeader->allocationFile.clumpSize = SWAP_BE32 (fp->ff_clumpsize);
FTOC(fp)->c_flag &= ~C_MODIFIED;
}
if (hfsmp->hfs_attribute_vp) {
fp = VTOF(hfsmp->hfs_attribute_vp);
for (i = 0; i < kHFSPlusExtentDensity; i++) {
volumeHeader->attributesFile.extents[i].startBlock =
SWAP_BE32 (fp->ff_extents[i].startBlock);
volumeHeader->attributesFile.extents[i].blockCount =
SWAP_BE32 (fp->ff_extents[i].blockCount);
}
FTOC(fp)->c_flag &= ~C_MODIFIED;
volumeHeader->attributesFile.logicalSize = SWAP_BE64 (fp->ff_size);
volumeHeader->attributesFile.totalBlocks = SWAP_BE32 (fp->ff_blocks);
volumeHeader->attributesFile.clumpSize = SWAP_BE32 (fp->ff_clumpsize);
}
vcb->vcbFlags &= 0x00FF;
if (1 ) {
lck_mtx_unlock(&hfsmp->hfs_mutex);
}
if (altflush && hfsmp->hfs_alt_id_sector) {
struct buf *alt_bp = NULL;
if (buf_meta_bread(hfsmp->hfs_devvp, hfsmp->hfs_alt_id_sector, sectorsize, NOCRED, &alt_bp) == 0) {
if (hfsmp->jnl) {
journal_modify_block_start(hfsmp->jnl, alt_bp);
}
bcopy(volumeHeader, (char *)buf_dataptr(alt_bp) + HFS_ALT_OFFSET(sectorsize), kMDBSize);
if (hfsmp->jnl) {
journal_modify_block_end(hfsmp->jnl, alt_bp);
} else {
(void) VNOP_BWRITE(alt_bp);
}
} else if (alt_bp)
buf_brelse(alt_bp);
}
if (hfsmp->jnl) {
journal_modify_block_end(hfsmp->jnl, bp);
} else {
if (waitfor != MNT_WAIT)
buf_bawrite(bp);
else {
retval = VNOP_BWRITE(bp);
if (critical && (retval == 0)) {
(void) VNOP_IOCTL(hfsmp->hfs_devvp, DKIOCSYNCHRONIZECACHE,
NULL, FWRITE, NULL);
}
}
}
hfs_end_transaction(hfsmp);
return (retval);
}
__private_extern__
int
hfs_extendfs(struct hfsmount *hfsmp, u_int64_t newsize, vfs_context_t context)
{
struct proc *p = vfs_context_proc(context);
kauth_cred_t cred = vfs_context_ucred(context);
struct vnode *vp;
struct vnode *devvp;
struct buf *bp;
struct filefork *fp = NULL;
ExtendedVCB *vcb;
struct cat_fork forkdata;
u_int64_t oldsize;
u_int64_t newblkcnt;
u_int64_t prev_phys_block_count;
u_int32_t addblks;
u_int64_t sectorcnt;
u_int32_t sectorsize;
daddr64_t prev_alt_sector;
daddr_t bitmapblks;
int lockflags;
int error;
devvp = hfsmp->hfs_devvp;
vcb = HFSTOVCB(hfsmp);
if ((vcb->vcbSigWord == kHFSSigWord) ||
(hfsmp->jnl == NULL) ||
(vcb->hfsPlusIOPosOffset != 0)) {
return (EPERM);
}
if (suser(cred, NULL)) {
error = hfs_vget(hfsmp, kHFSRootFolderID, &vp, 0);
if (error)
return (error);
error = hfs_owner_rights(hfsmp, VTOC(vp)->c_uid, cred, p, 0);
if (error == 0) {
error = hfs_write_access(vp, cred, p, false);
}
hfs_unlock(VTOC(vp));
vnode_put(vp);
if (error)
return (error);
error = vnode_authorize(devvp, NULL, KAUTH_VNODE_READ_DATA | KAUTH_VNODE_WRITE_DATA, context);
if (error)
return (error);
}
if (VNOP_IOCTL(devvp, DKIOCGETBLOCKSIZE, (caddr_t)§orsize, 0, context)) {
return (ENXIO);
}
if (sectorsize != hfsmp->hfs_phys_block_size) {
return (ENXIO);
}
if (VNOP_IOCTL(devvp, DKIOCGETBLOCKCOUNT, (caddr_t)§orcnt, 0, context)) {
return (ENXIO);
}
if ((sectorsize * sectorcnt) < newsize) {
printf("hfs_extendfs: not enough space on device\n");
return (ENOSPC);
}
oldsize = (u_int64_t)hfsmp->totalBlocks * (u_int64_t)hfsmp->blockSize;
if ((newsize <= oldsize) || (newsize % sectorsize)) {
printf("hfs_extendfs: invalid size\n");
return (EINVAL);
}
newblkcnt = newsize / vcb->blockSize;
if (newblkcnt > (u_int64_t)0xFFFFFFFF)
return (EOVERFLOW);
addblks = newblkcnt - vcb->totalBlocks;
printf("hfs_extendfs: growing %s by %d blocks\n", vcb->vcbVN, addblks);
if (hfs_start_transaction(hfsmp) != 0) {
return (EINVAL);
}
lockflags = hfs_systemfile_lock(hfsmp, SFL_EXTENTS | SFL_BITMAP, HFS_EXCLUSIVE_LOCK);
vp = vcb->allocationsRefNum;
fp = VTOF(vp);
bcopy(&fp->ff_data, &forkdata, sizeof(forkdata));
bitmapblks = roundup(newblkcnt / 8, vcb->vcbVBMIOSize) / vcb->blockSize;
if (bitmapblks > (daddr_t)fp->ff_blocks)
bitmapblks -= fp->ff_blocks;
else
bitmapblks = 0;
if (bitmapblks > 0) {
daddr64_t blkno;
daddr_t blkcnt;
error = AddFileExtent(vcb, fp, vcb->totalBlocks, bitmapblks);
if (error) {
printf("hfs_extendfs: error %d adding extents\n", error);
goto out;
}
blkcnt = bitmapblks;
blkno = (daddr64_t)fp->ff_blocks;
fp->ff_blocks += bitmapblks;
fp->ff_size += (u_int64_t)bitmapblks * (u_int64_t)vcb->blockSize;
VTOC(vp)->c_blocks = fp->ff_blocks;
{
bp = NULL;
while (blkcnt > 0) {
error = (int)buf_meta_bread(vp, blkno, vcb->blockSize, NOCRED, &bp);
if (error) {
if (bp) {
buf_brelse(bp);
}
break;
}
bzero((char *)buf_dataptr(bp), vcb->blockSize);
buf_markaged(bp);
error = (int)buf_bwrite(bp);
if (error)
break;
--blkcnt;
++blkno;
}
}
if (error) {
printf("hfs_extendfs: error %d clearing blocks\n", error);
goto out;
}
error = BlockMarkAllocated(vcb, vcb->totalBlocks, bitmapblks);
if (error) {
printf("hfs_extendfs: error %d setting bitmap\n", error);
goto out;
}
}
if (vcb->blockSize == 512)
error = BlockMarkAllocated(vcb, vcb->totalBlocks + addblks - 2, 2);
else
error = BlockMarkAllocated(vcb, vcb->totalBlocks + addblks - 1, 1);
if (error) {
printf("hfs_extendfs: error %d setting bitmap (VH)\n", error);
goto out;
}
if (vcb->blockSize == 512)
(void) BlockMarkFree(vcb, vcb->totalBlocks - 2, 2);
else
(void) BlockMarkFree(vcb, vcb->totalBlocks - 1, 1);
prev_phys_block_count = hfsmp->hfs_phys_block_count;
prev_alt_sector = hfsmp->hfs_alt_id_sector;
vcb->totalBlocks += addblks;
vcb->freeBlocks += addblks - bitmapblks;
hfsmp->hfs_phys_block_count = newsize / sectorsize;
hfsmp->hfs_alt_id_sector = (hfsmp->hfsPlusIOPosOffset / sectorsize) +
HFS_ALT_SECTOR(sectorsize, hfsmp->hfs_phys_block_count);
MarkVCBDirty(vcb);
error = hfs_flushvolumeheader(hfsmp, MNT_WAIT, HFS_ALTFLUSH);
if (error) {
printf("hfs_extendfs: couldn't flush volume headers (%d)", error);
fp->ff_size -= (u_int64_t)bitmapblks * (u_int64_t)vcb->blockSize;
vcb->totalBlocks -= addblks;
vcb->freeBlocks -= addblks - bitmapblks;
hfsmp->hfs_phys_block_count = prev_phys_block_count;
hfsmp->hfs_alt_id_sector = prev_alt_sector;
MarkVCBDirty(vcb);
if (vcb->blockSize == 512)
(void) BlockMarkAllocated(vcb, vcb->totalBlocks - 2, 2);
else
(void) BlockMarkAllocated(vcb, vcb->totalBlocks - 1, 1);
goto out;
}
bp = NULL;
if (prev_alt_sector) {
if (buf_meta_bread(hfsmp->hfs_devvp, prev_alt_sector, sectorsize,
NOCRED, &bp) == 0) {
journal_modify_block_start(hfsmp->jnl, bp);
bzero((char *)buf_dataptr(bp) + HFS_ALT_OFFSET(sectorsize), kMDBSize);
journal_modify_block_end(hfsmp->jnl, bp);
} else if (bp) {
buf_brelse(bp);
}
}
out:
if (error && fp) {
bcopy(&forkdata, &fp->ff_data, sizeof(forkdata));
VTOC(vp)->c_blocks = fp->ff_blocks;
}
hfs_systemfile_unlock(hfsmp, lockflags);
hfs_end_transaction(hfsmp);
return (error);
}
#define HFS_MIN_SIZE (32LL * 1024LL * 1024LL)
__private_extern__
int
hfs_truncatefs(struct hfsmount *hfsmp, u_int64_t newsize, __unused vfs_context_t context)
{
struct vnode* rvp = NULL;
struct buf *bp = NULL;
u_int64_t oldsize;
u_int32_t newblkcnt;
u_int32_t reclaimblks;
int lockflags = 0;
int transaction_begun = 0;
int error;
error = hfs_vget(hfsmp, kHFSRootFolderID, &rvp, 0);
if (error) {
return (error);
}
if ((hfsmp->hfs_flags & HFS_STANDARD) ||
(hfsmp->jnl == NULL) ||
(hfsmp->hfsPlusIOPosOffset != 0)) {
error = EPERM;
goto out;
}
oldsize = (u_int64_t)hfsmp->totalBlocks * (u_int64_t)hfsmp->blockSize;
newblkcnt = newsize / hfsmp->blockSize;
reclaimblks = hfsmp->totalBlocks - newblkcnt;
if ((newsize < HFS_MIN_SIZE) ||
(newsize >= oldsize) ||
(newsize % hfsmp->hfs_phys_block_size)) {
error = EINVAL;
goto out;
}
if (reclaimblks > (hfsmp->freeBlocks / 4)) {
error = ENOSPC;
goto out;
}
printf("hfs_truncatefs: shrinking %s by %d blocks out of %d\n",
hfsmp->vcbVN, reclaimblks, hfsmp->totalBlocks);
if (hfs_start_transaction(hfsmp) != 0) {
error = EINVAL;
goto out;
}
transaction_begun = 1;
if (hfs_isallocated(hfsmp, newblkcnt, reclaimblks - 1)) {
hfs_end_transaction(hfsmp);
transaction_begun = 0;
if (hfs_reclaimspace(hfsmp, newblkcnt) != 0) {
printf("hfs_truncatefs: couldn't reclaim space on %s\n", hfsmp->vcbVN);
error = ENOSPC;
goto out;
}
if (hfs_start_transaction(hfsmp) != 0) {
error = EINVAL;
goto out;
}
transaction_begun = 1;
if (hfs_isallocated(hfsmp, newblkcnt, reclaimblks - 1)) {
printf("hfs_truncatefs: didn't reclaim enough space on %s\n", hfsmp->vcbVN);
error = ENOSPC;
goto out;
}
}
lockflags = hfs_systemfile_lock(hfsmp, SFL_EXTENTS | SFL_BITMAP, HFS_EXCLUSIVE_LOCK);
if (hfsmp->blockSize == 512)
(void) BlockMarkFree(hfsmp, hfsmp->totalBlocks - 2, 2);
else
(void) BlockMarkFree(hfsmp, hfsmp->totalBlocks - 1, 1);
if (hfsmp->blockSize == 512)
error = BlockMarkAllocated(hfsmp, newblkcnt - 2, 2);
else
error = BlockMarkAllocated(hfsmp, newblkcnt - 1, 1);
if (error) {
goto out;
}
if (hfsmp->hfs_alt_id_sector) {
if (buf_meta_bread(hfsmp->hfs_devvp, hfsmp->hfs_alt_id_sector,
hfsmp->hfs_phys_block_size, NOCRED, &bp) == 0) {
journal_modify_block_start(hfsmp->jnl, bp);
bzero((void*)((char *)buf_dataptr(bp) + HFS_ALT_OFFSET(hfsmp->hfs_phys_block_size)), kMDBSize);
journal_modify_block_end(hfsmp->jnl, bp);
} else if (bp) {
buf_brelse(bp);
}
bp = NULL;
}
hfsmp->freeBlocks -= hfsmp->totalBlocks - newblkcnt;
hfsmp->totalBlocks = newblkcnt;
hfsmp->hfs_phys_block_count = newsize / hfsmp->hfs_phys_block_size;
hfsmp->hfs_alt_id_sector = HFS_ALT_SECTOR(hfsmp->hfs_phys_block_size, hfsmp->hfs_phys_block_count);
MarkVCBDirty(hfsmp);
error = hfs_flushvolumeheader(hfsmp, MNT_WAIT, HFS_ALTFLUSH);
if (error)
panic("hfs_truncatefs: unexpected error flushing volume header (%d)\n", error);
out:
if (lockflags) {
hfs_systemfile_unlock(hfsmp, lockflags);
}
if (transaction_begun) {
hfs_end_transaction(hfsmp);
}
if (rvp) {
hfs_unlock(VTOC(rvp));
vnode_put(rvp);
}
return (error);
}
static int
hfs_reclaimspace(struct hfsmount *hfsmp, u_long startblk)
{
struct vnode *vp = NULL;
FCB *fcb;
struct BTreeIterator * iterator = NULL;
struct FSBufferDescriptor btdata;
struct HFSPlusCatalogFile filerec;
u_int32_t saved_next_allocation;
cnid_t * cnidbufp;
size_t cnidbufsize;
int filecnt;
int maxfilecnt;
u_long block;
int lockflags;
int i;
int error;
if (hfsmp->hfs_attribute_vp) {
struct filefork *fp;
fp = VTOF(hfsmp->hfs_attribute_vp);
for (i = 0; i < kHFSPlusExtentDensity; ++i) {
block = fp->ff_extents[i].startBlock +
fp->ff_extents[i].blockCount;
if (block >= startblk) {
printf("hfs_reclaimspace: Attributes file can't move\n");
return (EPERM);
}
}
}
maxfilecnt = MIN(hfsmp->hfs_filecount, 16384);
cnidbufsize = maxfilecnt * sizeof(cnid_t);
if (kmem_alloc(kernel_map, (vm_offset_t *)&cnidbufp, cnidbufsize)) {
return (ENOMEM);
}
if (kmem_alloc(kernel_map, (vm_offset_t *)&iterator, sizeof(*iterator))) {
kmem_free(kernel_map, (vm_offset_t)cnidbufp, cnidbufsize);
return (ENOMEM);
}
saved_next_allocation = hfsmp->nextAllocation;
hfsmp->nextAllocation = hfsmp->hfs_metazone_start;
fcb = VTOF(hfsmp->hfs_catalog_vp);
bzero(iterator, sizeof(*iterator));
btdata.bufferAddress = &filerec;
btdata.itemSize = sizeof(filerec);
btdata.itemCount = 1;
lockflags = hfs_systemfile_lock(hfsmp, SFL_CATALOG, HFS_SHARED_LOCK);
error = BTIterateRecord(fcb, kBTreeFirstRecord, iterator, NULL, NULL);
if (error) {
hfs_systemfile_unlock(hfsmp, lockflags);
goto out;
}
for (filecnt = 0; filecnt < maxfilecnt; ) {
error = BTIterateRecord(fcb, kBTreeNextRecord, iterator, &btdata, NULL);
if (error) {
if (error == btNotFound)
error = 0;
break;
}
if (filerec.recordType != kHFSPlusFileRecord ||
filerec.fileID == hfsmp->hfs_jnlfileid)
continue;
for (i = 0; i < kHFSPlusExtentDensity; ++i) {
block = filerec.dataFork.extents[i].startBlock +
filerec.dataFork.extents[i].blockCount;
if (block >= startblk) {
if (filerec.fileID == hfsmp->hfs_jnlfileid) {
printf("hfs_reclaimspace: cannot move active journal\n");
error = EPERM;
break;
}
cnidbufp[filecnt++] = filerec.fileID;
break;
}
block = filerec.resourceFork.extents[i].startBlock +
filerec.resourceFork.extents[i].blockCount;
if (block >= startblk) {
cnidbufp[filecnt++] = filerec.fileID;
break;
}
}
}
hfs_systemfile_unlock(hfsmp, lockflags);
if (error)
goto out;
for (i = 0; i < filecnt; ++i) {
struct vnode * rvp;
if (hfs_vget(hfsmp, cnidbufp[i], &vp, 0) != 0)
continue;
if (VTOF(vp)->ff_blocks > 0) {
error = hfs_relocate(vp, hfsmp->hfs_metazone_end + 1, kauth_cred_get(), current_proc());
}
if (error)
break;
if ((VTOC((vp))->c_blocks - VTOF((vp))->ff_blocks) > 0) {
error = hfs_vgetrsrc(hfsmp, vp, &rvp, current_proc());
if (error)
break;
error = hfs_relocate(rvp, hfsmp->hfs_metazone_end + 1, kauth_cred_get(), current_proc());
vnode_put(rvp);
if (error)
break;
}
hfs_unlock(VTOC(vp));
vnode_put(vp);
vp = NULL;
}
if (vp) {
hfs_unlock(VTOC(vp));
vnode_put(vp);
vp = NULL;
}
out:
kmem_free(kernel_map, (vm_offset_t)iterator, sizeof(*iterator));
kmem_free(kernel_map, (vm_offset_t)cnidbufp, cnidbufsize);
if (error) {
hfsmp->nextAllocation = saved_next_allocation;
}
return (error);
}
static int
hfs_vfs_getattr(struct mount *mp, struct vfs_attr *fsap, __unused vfs_context_t context)
{
ExtendedVCB *vcb = VFSTOVCB(mp);
struct hfsmount *hfsmp = VFSTOHFS(mp);
u_long freeCNIDs;
freeCNIDs = (u_long)0xFFFFFFFF - (u_long)hfsmp->vcbNxtCNID;
VFSATTR_RETURN(fsap, f_objcount, (uint64_t)hfsmp->vcbFilCnt + (uint64_t)hfsmp->vcbDirCnt);
VFSATTR_RETURN(fsap, f_filecount, (uint64_t)hfsmp->vcbFilCnt);
VFSATTR_RETURN(fsap, f_dircount, (uint64_t)hfsmp->vcbDirCnt);
VFSATTR_RETURN(fsap, f_maxobjcount, (uint64_t)0xFFFFFFFF);
VFSATTR_RETURN(fsap, f_iosize, (size_t)(MAX_UPL_TRANSFER * PAGE_SIZE));
VFSATTR_RETURN(fsap, f_blocks, (uint64_t)hfsmp->totalBlocks);
VFSATTR_RETURN(fsap, f_bfree, (uint64_t)hfs_freeblks(hfsmp, 0));
VFSATTR_RETURN(fsap, f_bavail, (uint64_t)hfs_freeblks(hfsmp, 1));
VFSATTR_RETURN(fsap, f_bsize, (uint32_t)vcb->blockSize);
VFSATTR_RETURN(fsap, f_bused, hfsmp->totalBlocks - hfs_freeblks(hfsmp, 1));
VFSATTR_RETURN(fsap, f_files, (uint64_t)(hfsmp->totalBlocks - 2));
VFSATTR_RETURN(fsap, f_ffree, MIN((uint64_t)freeCNIDs, (uint64_t)hfs_freeblks(hfsmp, 1)));
fsap->f_fsid.val[0] = hfsmp->hfs_raw_dev;
fsap->f_fsid.val[1] = vfs_typenum(mp);
VFSATTR_SET_SUPPORTED(fsap, f_fsid);
VFSATTR_RETURN(fsap, f_signature, vcb->vcbSigWord);
VFSATTR_RETURN(fsap, f_carbon_fsid, 0);
if (VFSATTR_IS_ACTIVE(fsap, f_capabilities)) {
vol_capabilities_attr_t *cap;
cap = &fsap->f_capabilities;
if (hfsmp->hfs_flags & HFS_STANDARD) {
cap->capabilities[VOL_CAPABILITIES_FORMAT] =
VOL_CAP_FMT_PERSISTENTOBJECTIDS |
VOL_CAP_FMT_CASE_PRESERVING |
VOL_CAP_FMT_FAST_STATFS;
} else {
cap->capabilities[VOL_CAPABILITIES_FORMAT] =
VOL_CAP_FMT_PERSISTENTOBJECTIDS |
VOL_CAP_FMT_SYMBOLICLINKS |
VOL_CAP_FMT_HARDLINKS |
VOL_CAP_FMT_JOURNAL |
(hfsmp->jnl ? VOL_CAP_FMT_JOURNAL_ACTIVE : 0) |
(hfsmp->hfs_flags & HFS_CASE_SENSITIVE ? VOL_CAP_FMT_CASE_SENSITIVE : 0) |
VOL_CAP_FMT_CASE_PRESERVING |
VOL_CAP_FMT_FAST_STATFS |
VOL_CAP_FMT_2TB_FILESIZE;
}
cap->capabilities[VOL_CAPABILITIES_INTERFACES] =
VOL_CAP_INT_SEARCHFS |
VOL_CAP_INT_ATTRLIST |
VOL_CAP_INT_NFSEXPORT |
VOL_CAP_INT_READDIRATTR |
VOL_CAP_INT_EXCHANGEDATA |
VOL_CAP_INT_ALLOCATE |
VOL_CAP_INT_VOL_RENAME |
VOL_CAP_INT_ADVLOCK |
VOL_CAP_INT_FLOCK;
cap->capabilities[VOL_CAPABILITIES_RESERVED1] = 0;
cap->capabilities[VOL_CAPABILITIES_RESERVED2] = 0;
cap->valid[VOL_CAPABILITIES_FORMAT] =
VOL_CAP_FMT_PERSISTENTOBJECTIDS |
VOL_CAP_FMT_SYMBOLICLINKS |
VOL_CAP_FMT_HARDLINKS |
VOL_CAP_FMT_JOURNAL |
VOL_CAP_FMT_JOURNAL_ACTIVE |
VOL_CAP_FMT_NO_ROOT_TIMES |
VOL_CAP_FMT_SPARSE_FILES |
VOL_CAP_FMT_ZERO_RUNS |
VOL_CAP_FMT_CASE_SENSITIVE |
VOL_CAP_FMT_CASE_PRESERVING |
VOL_CAP_FMT_FAST_STATFS |
VOL_CAP_FMT_2TB_FILESIZE;
cap->valid[VOL_CAPABILITIES_INTERFACES] =
VOL_CAP_INT_SEARCHFS |
VOL_CAP_INT_ATTRLIST |
VOL_CAP_INT_NFSEXPORT |
VOL_CAP_INT_READDIRATTR |
VOL_CAP_INT_EXCHANGEDATA |
VOL_CAP_INT_COPYFILE |
VOL_CAP_INT_ALLOCATE |
VOL_CAP_INT_VOL_RENAME |
VOL_CAP_INT_ADVLOCK |
VOL_CAP_INT_FLOCK;
cap->valid[VOL_CAPABILITIES_RESERVED1] = 0;
cap->valid[VOL_CAPABILITIES_RESERVED2] = 0;
VFSATTR_SET_SUPPORTED(fsap, f_capabilities);
}
if (VFSATTR_IS_ACTIVE(fsap, f_attributes)) {
vol_attributes_attr_t *attrp = &fsap->f_attributes;
attrp->validattr.commonattr = ATTR_CMN_VALIDMASK;
attrp->validattr.volattr = ATTR_VOL_VALIDMASK & ~ATTR_VOL_INFO;
attrp->validattr.dirattr = ATTR_DIR_VALIDMASK;
attrp->validattr.fileattr = ATTR_FILE_VALIDMASK;
attrp->validattr.forkattr = 0;
attrp->nativeattr.commonattr = ATTR_CMN_VALIDMASK;
attrp->nativeattr.volattr = ATTR_VOL_VALIDMASK & ~ATTR_VOL_INFO;
attrp->nativeattr.dirattr = ATTR_DIR_VALIDMASK;
attrp->nativeattr.fileattr = ATTR_FILE_VALIDMASK;
attrp->nativeattr.forkattr = 0;
VFSATTR_SET_SUPPORTED(fsap, f_attributes);
}
fsap->f_create_time.tv_sec = hfsmp->vcbCrDate;
fsap->f_create_time.tv_nsec = 0;
VFSATTR_SET_SUPPORTED(fsap, f_create_time);
fsap->f_modify_time.tv_sec = hfsmp->vcbLsMod;
fsap->f_modify_time.tv_nsec = 0;
VFSATTR_SET_SUPPORTED(fsap, f_modify_time);
fsap->f_backup_time.tv_sec = hfsmp->vcbVolBkUp;
fsap->f_backup_time.tv_nsec = 0;
VFSATTR_SET_SUPPORTED(fsap, f_backup_time);
if (VFSATTR_IS_ACTIVE(fsap, f_fssubtype)) {
uint16_t subtype = 0;
if (hfsmp->hfs_flags & HFS_STANDARD) {
subtype = HFS_SUBTYPE_STANDARDHFS;
} else {
if (hfsmp->jnl)
subtype |= HFS_SUBTYPE_JOURNALED;
if (hfsmp->hfs_flags & HFS_CASE_SENSITIVE)
subtype |= HFS_SUBTYPE_CASESENSITIVE;
}
fsap->f_fssubtype = subtype;
VFSATTR_SET_SUPPORTED(fsap, f_fssubtype);
}
if (VFSATTR_IS_ACTIVE(fsap, f_vol_name)) {
strncpy(fsap->f_vol_name, hfsmp->vcbVN, MAXPATHLEN);
fsap->f_vol_name[MAXPATHLEN - 1] = 0;
VFSATTR_SET_SUPPORTED(fsap, f_vol_name);
}
return (0);
}
static int
hfs_rename_volume(struct vnode *vp, const char *name, proc_t p)
{
ExtendedVCB *vcb = VTOVCB(vp);
struct cnode *cp = VTOC(vp);
struct hfsmount *hfsmp = VTOHFS(vp);
struct cat_desc to_desc;
struct cat_desc todir_desc;
struct cat_desc new_desc;
cat_cookie_t cookie;
int lockflags;
int error = 0;
if (name[0] == 0)
return(0);
bzero(&to_desc, sizeof(to_desc));
bzero(&todir_desc, sizeof(todir_desc));
bzero(&new_desc, sizeof(new_desc));
bzero(&cookie, sizeof(cookie));
todir_desc.cd_parentcnid = kHFSRootParentID;
todir_desc.cd_cnid = kHFSRootFolderID;
todir_desc.cd_flags = CD_ISDIR;
to_desc.cd_nameptr = name;
to_desc.cd_namelen = strlen(name);
to_desc.cd_parentcnid = kHFSRootParentID;
to_desc.cd_cnid = cp->c_cnid;
to_desc.cd_flags = CD_ISDIR;
if ((error = hfs_lock(cp, HFS_EXCLUSIVE_LOCK)) == 0) {
if ((error = hfs_start_transaction(hfsmp)) == 0) {
if ((error = cat_preflight(hfsmp, CAT_RENAME, &cookie, p)) == 0) {
lockflags = hfs_systemfile_lock(hfsmp, SFL_CATALOG, HFS_EXCLUSIVE_LOCK);
error = cat_rename(hfsmp, &cp->c_desc, &todir_desc, &to_desc, &new_desc);
if (!error) {
strncpy(vcb->vcbVN, name, sizeof(vcb->vcbVN));
vcb->vcbVN[sizeof(vcb->vcbVN) - 1] = 0;
}
hfs_systemfile_unlock(hfsmp, lockflags);
cat_postflight(hfsmp, &cookie, p);
if (error)
vcb->vcbFlags |= 0xFF00;
(void) hfs_flushvolumeheader(hfsmp, MNT_WAIT, 0);
}
hfs_end_transaction(hfsmp);
}
if (!error) {
if (cp->c_desc.cd_flags & CD_HASBUF) {
char *name = cp->c_desc.cd_nameptr;
cp->c_desc.cd_nameptr = 0;
cp->c_desc.cd_namelen = 0;
cp->c_desc.cd_flags &= ~CD_HASBUF;
vfs_removename(name);
}
replace_desc(cp, &new_desc);
vcb->volumeNameEncodingHint = new_desc.cd_encoding;
cp->c_touch_chgtime = TRUE;
}
hfs_unlock(cp);
}
return(error);
}
static int
hfs_vfs_setattr(struct mount *mp, struct vfs_attr *fsap, __unused vfs_context_t context)
{
kauth_cred_t cred = vfs_context_ucred(context);
int error = 0;
if (!kauth_cred_issuser(cred) && (kauth_cred_getuid(cred) != vfs_statfs(mp)->f_owner))
return(EACCES);
if (VFSATTR_IS_ACTIVE(fsap, f_vol_name)) {
vnode_t root_vp;
error = hfs_vfs_root(mp, &root_vp, context);
if (error)
goto out;
error = hfs_rename_volume(root_vp, fsap->f_vol_name, vfs_context_proc(context));
(void) vnode_put(root_vp);
if (error)
goto out;
VFSATTR_SET_SUPPORTED(fsap, f_vol_name);
}
out:
return error;
}
struct vfsops hfs_vfsops = {
hfs_mount,
hfs_start,
hfs_unmount,
hfs_vfs_root,
hfs_quotactl,
hfs_vfs_getattr,
hfs_sync,
hfs_vfs_vget,
hfs_fhtovp,
hfs_vptofh,
hfs_init,
hfs_sysctl,
hfs_vfs_setattr
};