X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/d52fe63fc81f7e44faaae711812a211a78434976..c0fea4742e91338fffdcf79f86a7c1d5e2b97eb1:/bsd/hfs/hfs_vfsops.c diff --git a/bsd/hfs/hfs_vfsops.c b/bsd/hfs/hfs_vfsops.c index 395b4b1e1..a1053d3c4 100644 --- a/bsd/hfs/hfs_vfsops.c +++ b/bsd/hfs/hfs_vfsops.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 1999-2000 Apple Computer, Inc. All rights reserved. + * Copyright (c) 1999-2005 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * @@ -59,159 +59,108 @@ * hfs_vfsops.c * derived from @(#)ufs_vfsops.c 8.8 (Berkeley) 5/20/95 * - * (c) Copyright 1997-1998 Apple Computer, Inc. All rights reserved. + * (c) Copyright 1997-2002 Apple Computer, Inc. All rights reserved. * * hfs_vfsops.c -- VFS layer for loadable HFS file system. * - * HISTORY - * 9-Nov-1999 Don Brady Fix error handling in hfs_unmount [2399157]. - * 9-Sep-1999 Don Brady Clear system file fcbModified flags in hfs_flushvolumeheader/hfs_flushMDB. - * 5-Aug-1999 Pat Dirks Moved special HFS flag from f_fsid.val[0][0] to mount flags (#2293117). - * 23-Jul-1999 Pat Dirks Added special-case code for root's parent directory in hfs_vget (#2263664). - * 9-Jun-1999 Don Brady Fix hfs_mount for reload and read-only downgrade cases. - * 2-Jun-1999 Don Brady Fix hfs_statfs to return correct f_files value. - * 4-May-1999 Don Brady Remove obsolete loadable module code. - * 22-Mar-1999 Don Brady Hide our private meta data in hfs_vget. - * 18-May-1999 Don Brady Add hfs_mountroot for HFS Plus rooting. - * 22-Mar-1999 Don Brady Hide our private meta data in hfs_vget. - * 12-Nov-1998 Pat Dirks Changed hfs_statfs to return volume's actual log. block size (#2286198). - * 22-Aug-1998 Scott Roberts Assign uid,gid, and mask for default on objects. - * 29-Jul-1998 Pat Dirks Fixed changed hfs_vget() to release complex node when retrying for data fork node. - * 27-Jul-1998 Scott Roberts Changes hfs_vget() to return data forks instead of complex. - * 14-Jul-1998 CHW Added check for use count of device node in hfs_mountfs - * 1-Jul-1998 Don Brady Always set kHFSVolumeUnmountedMask bit of vcb->vcbAtrb in hfs_unmount. - * 30-Jun-1998 Don Brady Removed hard-coded EINVAL error in hfs_mountfs (for radar #2249539). - * 24-Jun-1998 Don Brady Added setting of timezone to hfs_mount (radar #2226387). - * 4-Jun-1998 Don Brady Use VPUT/VRELE macros instead of vput/vrele. - * 6-May-1998 Scott Roberts Updated hfs_vget with kernel changes. - * 29-Apr-1998 Don Brady Update hfs_statfs to actually fill in statfs fields (radar #2227092). - * 23-Apr-1998 Pat Dirks Cleaned up code to call brelse() on errors from bread(). - * 4/20/1998 Don Brady Remove course-grained hfs metadata locking. - * 4/18/1998 Don Brady Add VCB locking. - * 4/16/1998 Don Brady hfs_unmount now flushes the volume bitmap. Add b-tree locking to hfs_vget. - * 4/8/1998 Don Brady Replace hfs_mdbupdate with hfs_flushvolumeheader and hfs_flushMDB. - * 4/8/1998 Don Brady In hfs_unmount call hfs_mdbupdate before trashing metafiles! - * 4/3/1998 Don Brady Call InitCatalogCache instead of PostInitFS. - * 4/1/1998 Don Brady Get rid of gHFSFlags, gReqstVol and gFlushOnlyFlag globals (not used). - * 3/30/1998 Don Brady In hfs_unmount use SKIPSYSTEM option on first vflush. - * 3/26/1998 Don Brady Changed hfs_unmount to call vflush before calling hfsUnmount. - * In hfs_mountfs don't mount hfs-wrapper. - * 3/19/1998 Pat Dirks Fixed bug in hfs_mount where device vnode was being - * released on way out. - * 11/14/1997 Pat Dirks Derived from hfs_vfsops.c */ #include #include +#include #include -#include -#include -#include +#include +#include +#include #include #include -#include +#include +#include +#include +#include +#include + +#include + +#include + #include #include #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_vfs = 0; -int hfs_dbg_vop = 0; -int hfs_dbg_load = 0; -int hfs_dbg_io = 0; -int hfs_dbg_utils = 0; -int hfs_dbg_rw = 0; -int hfs_dbg_lookup = 0; -int hfs_dbg_tree = 0; int hfs_dbg_err = 0; -int hfs_dbg_test = 0; #endif -/* - * These come from IOKit/storage/IOMediaBSDClient.h - */ -#define DKIOCGETBLOCKSIZE _IOR('d', 24, u_int32_t) -#define DKIOCSETBLOCKSIZE _IOW('d', 24, u_int32_t) -#define DKIOCGETBLOCKCOUNT _IOR('d', 25, u_int64_t) - -/* - * HFS File System globals: - */ -Ptr gBufferAddress[BUFFERPTRLISTSIZE]; -struct buf *gBufferHeaderPtr[BUFFERPTRLISTSIZE]; -int gBufferListIndex; -simple_lock_data_t gBufferPtrListLock; - -//static char hfs_fs_name[MFSNAMELEN] = "hfs"; +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; -/* - * Global variables defined in other modules: - */ extern struct vnodeopv_desc hfs_vnodeop_opv_desc; -extern struct vnode *hfs_vhashget(dev_t dev, UInt32 nodeID, UInt8 forkType); +extern void hfs_converterinit(void); -extern OSErr HFSPlusToHFSExtents( const HFSPlusExtentRecord oldExtents, HFSExtentRecord newExtents); +extern void inittodr(time_t base); +extern int hfs_write_access(struct vnode *, kauth_cred_t, struct proc *, Boolean); -extern void inittodr( time_t base); -extern OSErr GetVolumeNameFromCatalog(ExtendedVCB *vcb); -extern void CopyCatalogToObjectMeta(struct hfsCatalogInfo *catInfo, struct vnode *vp, struct hfsfilemeta *fm); -extern void CopyCatalogToFCB(struct hfsCatalogInfo *catInfo, struct vnode *vp); -extern void hfs_name_CatToMeta(CatalogNodeData *nodeData, struct hfsfilemeta *fm); -int hfs_changefs(struct mount *mp, struct hfs_mount_args *args, struct proc *p); +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); -int hfs_reload(struct mount *mp, struct ucred *cred, struct proc *p); -int hfs_mountfs(struct vnode *devvp, struct mount *mp, struct proc *p, struct hfs_mount_args *args); -int hfs_vget(struct mount *mp, void *objID, struct vnode **vpp); -void hfs_vhashinit(); -void hfs_converterinit(void); - - -static int hfs_statfs(); +static int hfs_reclaimspace(struct hfsmount *hfsmp, u_long startblk, u_long reclaimblks); +static int hfs_overlapped_overflow_extents(struct hfsmount *hfsmp, u_int32_t startblk, + u_int32_t catblks, u_int32_t fileID, int rsrcfork); /* * Called by vfs_mountroot when mounting HFS Plus as root. */ + +__private_extern__ int -hfs_mountroot() +hfs_mountroot(mount_t mp, vnode_t rvp, vfs_context_t context) { - extern struct vnode *rootvp; - struct mount *mp; - struct proc *p = current_proc(); /* XXX */ struct hfsmount *hfsmp; + ExtendedVCB *vcb; + struct vfsstatfs *vfsp; int error; - /* - * Get vnode for rootdev. - */ - if ((error = bdevvp(rootdev, &rootvp))) { - printf("hfs_mountroot: can't setup bdevvp"); - return (error); - } - if ((error = vfs_rootmountalloc("hfs", "root_device", &mp))) + if ((error = hfs_mountfs(rvp, mp, NULL, context))) return (error); - if ((error = hfs_mountfs(rootvp, mp, p, NULL))) { - mp->mnt_vfc->vfc_refcount--; - vfs_unbusy(mp, p); - _FREE_ZONE(mp, sizeof (struct mount), M_MOUNT); - return (error); - } - simple_lock(&mountlist_slock); - CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list); - simple_unlock(&mountlist_slock); - + /* Init hfsmp */ hfsmp = VFSTOHFS(mp); @@ -220,10 +169,14 @@ hfs_mountroot() hfsmp->hfs_dir_mask = (S_IRWXU | S_IRGRP|S_IXGRP | S_IROTH|S_IXOTH); /* 0755 */ hfsmp->hfs_file_mask = (S_IRWXU | S_IRGRP|S_IXGRP | S_IROTH|S_IXOTH); /* 0755 */ - (void)hfs_statfs(mp, &mp->mnt_stat, p); - - vfs_unbusy(mp, p); - inittodr(to_bsd_time(HFSTOVCB(hfsmp)->vcbLsMod)); + /* Establish the free block reserve. */ + 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); } @@ -234,228 +187,261 @@ hfs_mountroot() * mount system call */ -int -hfs_mount (mp, path, data, ndp, p) - register struct mount *mp; - char *path; - caddr_t data; - struct nameidata *ndp; - struct proc *p; +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 vnode *devvp; struct hfs_mount_args args; - size_t size; int retval = E_NONE; - int flags; - mode_t accessmode; - int loadconv = 0; - - if ((retval = copyin(data, (caddr_t)&args, sizeof(args)))) - goto error_exit; + uint32_t cmdflags; - /* - * If updating, check whether changing from read-only to - * read/write; if there is no device name, that's all we do. - */ - if (mp->mnt_flag & MNT_UPDATE) { - + 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 ((hfsmp->hfs_fs_ronly == 0) && (mp->mnt_flag & MNT_RDONLY)) { - + + /* Reload incore data after an fsck. */ + if (cmdflags & MNT_RELOAD) { + if (vfs_isrdonly(mp)) + return hfs_reload(mp, vfs_context_ucred(context), p); + else + return (EINVAL); + } + + /* Change to a read-only file system. */ + if (((hfsmp->hfs_flags & HFS_READ_ONLY) == 0) && + vfs_isrdonly(mp)) { + int flags; + /* use VFS_SYNC to push out System (btree) files */ - retval = VFS_SYNC(mp, MNT_WAIT, p->p_ucred, p); - if (retval && ((mp->mnt_flag & MNT_FORCE) == 0)) - goto error_exit; + retval = VFS_SYNC(mp, MNT_WAIT, context); + if (retval && ((cmdflags & MNT_FORCE) == 0)) + goto out; flags = WRITECLOSE; - if (mp->mnt_flag & MNT_FORCE) + if (cmdflags & MNT_FORCE) flags |= FORCECLOSE; - if ((retval = hfs_flushfiles(mp, flags))) - goto error_exit; - hfsmp->hfs_fs_clean = 1; - hfsmp->hfs_fs_ronly = 1; - if (HFSTOVCB(hfsmp)->vcbSigWord == kHFSPlusSigWord) - retval = hfs_flushvolumeheader(hfsmp, MNT_WAIT); - else - retval = hfs_flushMDB(hfsmp, MNT_WAIT); + if ((retval = hfs_flushfiles(mp, flags, p))) + goto out; + hfsmp->hfs_flags |= HFS_READ_ONLY; + retval = hfs_flushvolumeheader(hfsmp, MNT_WAIT, 0); /* also get the volume bitmap blocks */ - if (!retval) - retval = VOP_FSYNC(hfsmp->hfs_devvp, NOCRED, MNT_WAIT, p); - + 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_fs_clean = 0; - hfsmp->hfs_fs_ronly = 0; - goto error_exit; + hfsmp->hfs_flags &= ~HFS_READ_ONLY; + goto out; } - } + if (hfsmp->jnl) { + hfs_global_exclusive_lock_acquire(hfsmp); - if ((mp->mnt_flag & MNT_RELOAD) && - (retval = hfs_reload(mp, ndp->ni_cnd.cn_cred, p))) - goto error_exit; + journal_close(hfsmp->jnl); + hfsmp->jnl = NULL; - if (hfsmp->hfs_fs_ronly && (mp->mnt_kern_flag & MNTK_WANTRDWR)) { - /* - * If upgrade to read-write by non-root, then verify - * that user has necessary permissions on the device. - */ - if (p->p_ucred->cr_uid != 0) { - devvp = hfsmp->hfs_devvp; - vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, p); - if ((retval = VOP_ACCESS(devvp, VREAD | VWRITE, p->p_ucred, p))) { - VOP_UNLOCK(devvp, 0, p); - goto error_exit; - } - VOP_UNLOCK(devvp, 0, p); + // Note: we explicitly don't want to shutdown + // access to the jvp because we may need + // it later if we go back to being read-write. + + hfs_global_exclusive_lock_release(hfsmp); } - if (HFSTOVCB(hfsmp)->vcbSigWord == kHFSPlusSigWord) - retval = hfs_flushvolumeheader(hfsmp, MNT_WAIT); - else - retval = hfs_flushMDB(hfsmp, MNT_WAIT); - + } + + /* Change to a writable file system. */ + if (vfs_iswriteupgrade(mp)) { + retval = hfs_flushvolumeheader(hfsmp, MNT_WAIT, 0); if (retval != E_NONE) - goto error_exit; + goto out; - /* only change hfs_fs_ronly after a successfull write */ - hfsmp->hfs_fs_ronly = 0; - hfsmp->hfs_fs_clean = 0; - } + // If the journal was shut-down previously because we were + // asked to be read-only, let's start it back up again now + + 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; + } - if ((hfsmp->hfs_fs_ronly == 0) && - (HFSTOVCB(hfsmp)->vcbSigWord == kHFSPlusSigWord)) { - /* setup private/hidden directory for unlinked files */ - hfsmp->hfs_private_metadata_dir = FindMetaDataDirectory(HFSTOVCB(hfsmp)); - } + } - if (args.fspec == 0) { - /* - * Process export requests. - */ - return vfs_export(mp, &hfsmp->hfs_export, &args.export); + /* Only clear HFS_READ_ONLY after a successfull write */ + hfsmp->hfs_flags &= ~HFS_READ_ONLY; + + if (!(hfsmp->hfs_flags & (HFS_READ_ONLY & HFS_STANDARD))) { + /* setup private/hidden directory for unlinked files */ + FindMetaDataDirectory(HFSTOVCB(hfsmp)); + hfs_remove_orphans(hfsmp); + + /* + * Allow hot file clustering if conditions allow. + */ + if (hfsmp->hfs_flags & HFS_METADATA_ZONE) { + (void) hfs_recording_init(hfsmp); + } + } } - } - /* - * Not an update, or updating the name: look up the name - * and verify that it refers to a sensible block device. - */ - NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p); - retval = namei(ndp); - if (retval != E_NONE) { - DBG_ERR(("hfs_mount: CAN'T GET DEVICE: %s, %x\n", args.fspec, ndp->ni_vp->v_rdev)); - goto error_exit; - } + /* Update file system parameters. */ + retval = hfs_changefs(mp, &args); - devvp = ndp->ni_vp; + } else /* not an update request */ { - if (devvp->v_type != VBLK) { - vrele(devvp); - retval = ENOTBLK; - goto error_exit; + /* Set the mount flag to indicate that we support volfs */ + vfs_setflags(mp, (uint64_t)((unsigned int)MNT_DOVOLFS)); + + retval = hfs_mountfs(devvp, mp, &args, context); } - if (major(devvp->v_rdev) >= nblkdev) { - vrele(devvp); - retval = ENXIO; - goto error_exit; +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 we couldn't find this guy skip to the next one + */ + if (args->namefix) + cache_purge(vp); + + return (VNODE_RETURNED); + } /* - * If mount by non-root, then verify that user has necessary - * permissions on the device. + * Get the real uid/gid and perm mask from disk. */ - if (p->p_ucred->cr_uid != 0) { - accessmode = VREAD; - if ((mp->mnt_flag & MNT_RDONLY) == 0) - accessmode |= VWRITE; - vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, p); - if ((retval = VOP_ACCESS(devvp, accessmode, p->p_ucred, p))) { - vput(devvp); - goto error_exit; - } - VOP_UNLOCK(devvp, 0, p); + if (args->permswitch || args->permfix) { + cp->c_uid = cnattr.ca_uid; + cp->c_gid = cnattr.ca_gid; + cp->c_mode = cnattr.ca_mode; } + /* + * If we're switching name converters then... + * Remove the existing entry from the namei cache. + * Update name to one based on new encoder. + */ + if (args->namefix) { + cache_purge(vp); + replace_desc(cp, &cndesc); - if ((mp->mnt_flag & MNT_UPDATE) == 0) { - retval = hfs_mountfs(devvp, mp, p, &args); - if (retval != E_NONE) - vrele(devvp); + 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 { - if (devvp != hfsmp->hfs_devvp) - retval = EINVAL; /* needs translation */ - else - retval = hfs_changefs(mp, &args, p); - vrele(devvp); - } - - if (retval != E_NONE) { - goto error_exit; + cat_releasedesc(&cndesc); } - - - /* Set the mount flag to indicate that we support volfs */ - mp->mnt_flag |= MNT_DOVOLFS; - if (VFSTOVCB(mp)->vcbSigWord == kHFSSigWord) { - /* HFS volumes only want roman-encoded names: */ - mp->mnt_flag |= MNT_FIXEDSCRIPTENCODING; - } - (void) copyinstr(path, mp->mnt_stat.f_mntonname, MNAMELEN-1, &size); - bzero(mp->mnt_stat.f_mntonname + size, MNAMELEN - size); - (void) copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, &size); - bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); - (void)hfs_statfs(mp, &mp->mnt_stat, p); - return (E_NONE); - -error_exit: - - return (retval); + return (VNODE_RETURNED); } - -/* change fs mount parameters */ -int -hfs_changefs(mp, args, p) - struct mount *mp; - struct hfs_mount_args *args; - struct proc *p; +/* Change fs mount parameters */ +static int +hfs_changefs(struct mount *mp, struct hfs_mount_args *args) { - int retval; + int retval = 0; int namefix, permfix, permswitch; struct hfsmount *hfsmp; - struct hfsnode *hp; - mode_t hfs_file_mask; ExtendedVCB *vcb; - hfsCatalogInfo catInfo; - register struct vnode *vp, *nvp; 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); - permswitch = (((hfsmp->hfs_unknownpermissions != 0) && ((mp->mnt_flag & MNT_UNKNOWNPERMISSIONS) == 0)) || - ((hfsmp->hfs_unknownpermissions == 0) && ((mp->mnt_flag & MNT_UNKNOWNPERMISSIONS) != 0))); + 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))); + /* The root filesystem must operate with actual permissions: */ - if (permswitch && (mp->mnt_flag & MNT_ROOTFS) && (mp->mnt_flag & MNT_UNKNOWNPERMISSIONS)) { - mp->mnt_flag &= ~MNT_UNKNOWNPERMISSIONS; /* Just say "No". */ + if (permswitch && (mount_flags & MNT_ROOTFS) && (mount_flags & MNT_UNKNOWNPERMISSIONS)) { + vfs_clearflags(mp, (uint64_t)((unsigned int)MNT_UNKNOWNPERMISSIONS)); /* Just say "No". */ return EINVAL; - }; - hfsmp->hfs_unknownpermissions = ((mp->mnt_flag & MNT_UNKNOWNPERMISSIONS) != 0); - namefix = permfix = 0; + } + if (mount_flags & MNT_UNKNOWNPERMISSIONS) + hfsmp->hfs_flags |= HFS_UNKNOWN_PERMS; + else + hfsmp->hfs_flags &= ~HFS_UNKNOWN_PERMS; + + namefix = permfix = 0; - /* change the timezone (Note: this affects all hfs volumes and hfs+ volume create dates) */ + /* Change the timezone (Note: this affects all hfs volumes and hfs+ volume create dates) */ if (args->hfs_timezone.tz_minuteswest != VNOVAL) { gTimeZone = args->hfs_timezone; } - /* change the default uid, gid and/or mask */ + /* Change the default uid, gid and/or mask */ if ((args->hfs_uid != (uid_t)VNOVAL) && (hfsmp->hfs_uid != args->hfs_uid)) { hfsmp->hfs_uid = args->hfs_uid; - ++permfix; + if (vcb->vcbSigWord == kHFSPlusSigWord) + ++permfix; } if ((args->hfs_gid != (gid_t)VNOVAL) && (hfsmp->hfs_gid != args->hfs_gid)) { hfsmp->hfs_gid = args->hfs_gid; - ++permfix; + if (vcb->vcbSigWord == kHFSPlusSigWord) + ++permfix; } if (args->hfs_mask != (mode_t)VNOVAL) { if (hfsmp->hfs_dir_mask != (args->hfs_mask & ALLPERMS)) { @@ -463,17 +449,19 @@ hfs_changefs(mp, args, p) hfsmp->hfs_file_mask = args->hfs_mask & ALLPERMS; if ((args->flags != VNOVAL) && (args->flags & HFSFSMNT_NOXONFILES)) hfsmp->hfs_file_mask = (args->hfs_mask & DEFFILEMODE); - ++permfix; + if (vcb->vcbSigWord == kHFSPlusSigWord) + ++permfix; } } - /* change the hfs encoding value (hfs only) */ - if ((HFSTOVCB(hfsmp)->vcbSigWord == kHFSSigWord) && - (hfsmp->hfs_encoding != (u_long)VNOVAL) && + /* Change the hfs encoding value (hfs only) */ + 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 error_exit; + if (retval) + goto exit; /* * Connect the new hfs_get_unicode converter but leave @@ -486,143 +474,97 @@ hfs_changefs(mp, args, p) * in the old converters. */ 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 (!(namefix || permfix || permswitch)) goto exit; - + /* XXX 3762912 hack to support HFS filesystem 'owner' */ + 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); + /* * For each active vnode fix things that changed * * Note that we can visit a vnode more than once * and we can race with fsync. + * + * hfs_changefs_callback will be called for each vnode + * hung off of this mount point + * the vnode will be + * properly referenced and unreferenced around the callback */ - simple_lock(&mntvnode_slock); -loop: - for (vp = mp->mnt_vnodelist.lh_first; vp != NULL; vp = nvp) { - /* - * If the vnode that we are about to fix is no longer - * associated with this mount point, start over. - */ - if (vp->v_mount != mp) - goto loop; - - simple_lock(&vp->v_interlock); - nvp = vp->v_mntvnodes.le_next; - if (vp->v_flag & VSYSTEM) { - simple_unlock(&vp->v_interlock); - continue; - } - simple_unlock(&mntvnode_slock); - retval = vget(vp, LK_EXCLUSIVE | LK_NOWAIT | LK_INTERLOCK, p); - if (retval) { - simple_lock(&mntvnode_slock); - if (retval == ENOENT) - goto loop; - continue; - } - - hp = VTOH(vp); - - INIT_CATALOGDATA(&catInfo.nodeData, 0); - - catInfo.hint = kNoHint; - retval = hfs_getcatalog(vcb, H_DIRID(hp), H_NAME(hp), hp->h_meta->h_namelen, &catInfo); - /* If we couldn't find this guy skip to the next one */ - if (retval) { - if (namefix) - cache_purge(vp); - vput(vp); - simple_lock(&mntvnode_slock); - continue; - } - - H_HINT(hp) = catInfo.hint; - if (permswitch || (permfix && (hp->h_meta->h_metaflags & IN_UNSETACCESS))) { - if ((vcb->vcbSigWord == kHFSPlusSigWord) && (catInfo.nodeData.cnd_mode & IFMT)) { - if (mp->mnt_flag & MNT_UNKNOWNPERMISSIONS) { - /* - * Override the permissions as determined by the mount auguments - * in ALMOST the same way unset permissions are treated but keep - * track of whether or not the file or folder is hfs locked - * by leaving the h_pflags field unchanged from what was unpacked - * out of the catalog. - */ - hp->h_meta->h_metaflags |= IN_UNSETACCESS; - hp->h_meta->h_uid = VTOHFS(vp)->hfs_uid; - hp->h_meta->h_gid = VTOHFS(vp)->hfs_gid; - } else { - hp->h_meta->h_uid = catInfo.nodeData.cnd_ownerID; - hp->h_meta->h_gid = catInfo.nodeData.cnd_groupID; - }; - hp->h_meta->h_mode = (mode_t)catInfo.nodeData.cnd_mode; - } else { - /* - * Set the permissions as determined by the mount auguments - * but keep in account if the file or folder is hfs locked - */ - hp->h_meta->h_metaflags |= IN_UNSETACCESS; - hp->h_meta->h_uid = VTOHFS(vp)->hfs_uid; - hp->h_meta->h_gid = VTOHFS(vp)->hfs_gid; - - /* Default access is full read/write/execute: */ - hp->h_meta->h_mode &= IFMT; - hp->h_meta->h_mode |= ACCESSPERMS; /* 0777: rwxrwxrwx */ - /* ... but no more than that permitted by the mount point's: */ - if ((hp->h_meta->h_mode & IFMT) == IFDIR) { - hp->h_meta->h_mode &= IFMT | VTOHFS(vp)->hfs_dir_mask; - } else { - hp->h_meta->h_mode &= IFMT | VTOHFS(vp)->hfs_file_mask; - } - }; - }; - - /* - * If we're switching name converters then... - * Remove the existing entry from the namei cache. - * Update name to one based on new encoder. - */ - if (namefix) { - cache_purge(vp); - hfs_name_CatToMeta(&catInfo.nodeData, hp->h_meta); - - if (catInfo.nodeData.cnd_nodeID == kHFSRootFolderID) - strncpy(vcb->vcbVN, H_NAME(hp), NAME_MAX); - } - - CLEAN_CATALOGDATA(&catInfo.nodeData); + cargs.hfsmp = hfsmp; + cargs.namefix = namefix; + cargs.permfix = permfix; + cargs.permswitch = permswitch; - vput(vp); - simple_lock(&mntvnode_slock); + vnode_iterate(mp, 0, hfs_changefs_callback, (void *)&cargs); - } /* end for (vp...) */ - simple_unlock(&mntvnode_slock); - - -exit: /* * If we're switching name converters we can now * connect the new hfs_get_hfsname converter and * release our interest in the old converters. */ if (namefix) { - u_long old_encoding = hfsmp->hfs_encoding; - hfsmp->hfs_get_hfsname = get_hfsname_func; - hfsmp->hfs_encoding = args->hfs_encoding; vcb->volumeNameEncodingHint = args->hfs_encoding; - (void) hfs_relconverter(old_encoding); } +exit: + return (retval); +} - return (0); -error_exit: +struct hfs_reload_cargs { + struct hfsmount *hfsmp; + kauth_cred_t cred; + struct proc *p; + int error; +}; - return (retval); -} +static int +hfs_reload_callback(struct vnode *vp, void *cargs) +{ + struct cnode *cp; + struct hfs_reload_cargs *args; + + args = (struct hfs_reload_cargs *)cargs; + /* + * flush all the buffers associated with this node + */ + (void) buf_invalidateblks(vp, 0, 0, 0); + + cp = VTOC(vp); + /* + * Remove any directory hints + */ + if (vnode_isdir(vp)) + hfs_reldirhints(cp, 0); + + /* + * Re-read cnode data for all active vnodes (non-metadata files). + */ + 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; + /* lookup by fileID since name could have changed */ + if ((args->error = cat_idlookup(args->hfsmp, cp->c_fileid, &desc, &cp->c_attr, datafork))) + return (VNODE_RETURNED_DONE); + + /* update cnode's catalog descriptor */ + (void) replace_desc(cp, &desc); + } + return (VNODE_RETURNED); +} /* * Reload all incore data for a filesystem (used after running fsck on @@ -630,32 +572,27 @@ error_exit: * be mounted read-only. * * Things to do to update the mount: - * 1) invalidate all cached meta-data. - * 2) re-read volume header from disk. - * 3) re-load meta-file info (extents, file size). - * 4) re-load B-tree header data. - * 5) invalidate all inactive vnodes. - * 6) invalidate all cached file data. - * 7) re-read hfsnode data for all active vnodes. + * invalidate all cached meta-data. + * invalidate all inactive vnodes. + * invalidate all cached file data. + * re-read volume header from disk. + * re-load meta-file info (extents, file size). + * re-load B-tree header data. + * re-read cnode data for all active vnodes. */ -int -hfs_reload(mountp, cred, p) - register struct mount *mountp; - struct ucred *cred; - struct proc *p; +static int +hfs_reload(struct mount *mountp, kauth_cred_t cred, struct proc *p) { - register struct vnode *vp, *nvp, *devvp; - struct hfsnode *hp; + register struct vnode *devvp; struct buf *bp; int sectorsize; int error, i; struct hfsmount *hfsmp; struct HFSPlusVolumeHeader *vhp; ExtendedVCB *vcb; - FCB *fcb; - - if ((mountp->mnt_flag & MNT_RDONLY) == 0) - return (EINVAL); + struct filefork *forkp; + struct cat_desc cndesc; + struct hfs_reload_cargs args; hfsmp = VFSTOHFS(mountp); vcb = HFSTOVCB(hfsmp); @@ -667,43 +604,63 @@ hfs_reload(mountp, cred, p) * Invalidate all cached meta-data. */ devvp = hfsmp->hfs_devvp; - if (vinvalbuf(devvp, 0, cred, p, 0, 0)) + if (buf_invalidateblks(devvp, 0, 0, 0)) panic("hfs_reload: dirty1"); - InvalidateCatalogCache(vcb); + + args.hfsmp = hfsmp; + args.cred = cred; + args.p = p; + args.error = 0; + /* + * hfs_reload_callback will be called for each vnode + * hung off of this mount point that can't be recycled... + * vnode_iterate will recycle those that it can (the VNODE_RELOAD option) + * the vnode will be in an 'unbusy' state (VNODE_WAIT) and + * properly referenced and unreferenced around the callback + */ + vnode_iterate(mountp, VNODE_RELOAD | VNODE_WAIT, hfs_reload_callback, (void *)&args); + + if (args.error) + return (args.error); /* * Re-read VolumeHeader from disk. */ sectorsize = hfsmp->hfs_phys_block_size; - error = meta_bread(hfsmp->hfs_devvp, - (vcb->hfsPlusIOPosOffset / sectorsize) + HFS_PRI_SECTOR(sectorsize), + 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) - brelse(bp); + buf_brelse(bp); return (error); } - vhp = (HFSPlusVolumeHeader *) (bp->b_data + HFS_PRI_OFFSET(sectorsize)); + vhp = (HFSPlusVolumeHeader *) (buf_dataptr(bp) + HFS_PRI_OFFSET(sectorsize)); - if ((ValidVolumeHeader(vhp) != 0) || (vcb->blockSize != SWAP_BE32 (vhp->blockSize))) { - brelse(bp); - return (EIO); /* XXX needs translation */ + /* Do a quick sanity check */ + 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 = SWAP_BE32 (vhp->modifyDate); - vcb->vcbAtrb = (UInt16) SWAP_BE32 (vhp->attributes); /* VCB only uses lower 16 bits */ - vcb->vcbClpSiz = SWAP_BE32 (vhp->rsrcClumpSize); - vcb->vcbNxtCNID = SWAP_BE32 (vhp->nextCatalogID); - vcb->vcbVolBkUp = SWAP_BE32 (vhp->backupDate); - vcb->vcbWrCnt = SWAP_BE32 (vhp->writeCount); - vcb->vcbFilCnt = SWAP_BE32 (vhp->fileCount); - vcb->vcbDirCnt = SWAP_BE32 (vhp->folderCount); + 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->checkedDate = SWAP_BE32 (vhp->checkedDate); + 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); /* hfs+ create date is in local time */ @@ -711,117 +668,86 @@ hfs_reload(mountp, cred, p) /* * Re-load meta-file vnode data (extent info, file size, etc). */ - fcb = VTOFCB((struct vnode *)vcb->extentsRefNum); - /* bcopy(vhp->extentsFile.extents, fcb->fcbExtents, sizeof(HFSPlusExtentRecord)); */ - for (i = 0; i < kHFSPlusExtentDensity; i++) { - fcb->fcbExtents[i].startBlock = SWAP_BE32 (vhp->extentsFile.extents[i].startBlock); - fcb->fcbExtents[i].blockCount = SWAP_BE32 (vhp->extentsFile.extents[i].blockCount); - } - fcb->fcbEOF = SWAP_BE64 (vhp->extentsFile.logicalSize); - fcb->fcbPLen = SWAP_BE32 (vhp->extentsFile.totalBlocks) * vcb->blockSize; - fcb->fcbClmpSize = SWAP_BE32 (vhp->extentsFile.clumpSize); - - fcb = VTOFCB((struct vnode *)vcb->catalogRefNum); - /* bcopy(vhp->catalogFile.extents, fcb->fcbExtents, sizeof(HFSPlusExtentRecord)); */ - for (i = 0; i < kHFSPlusExtentDensity; i++) { - fcb->fcbExtents[i].startBlock = SWAP_BE32 (vhp->catalogFile.extents[i].startBlock); - fcb->fcbExtents[i].blockCount = SWAP_BE32 (vhp->catalogFile.extents[i].blockCount); - } - fcb->fcbPLen = SWAP_BE64 (vhp->catalogFile.logicalSize); - fcb->fcbPLen = SWAP_BE32 (vhp->catalogFile.totalBlocks) * vcb->blockSize; - fcb->fcbClmpSize = SWAP_BE32 (vhp->catalogFile.clumpSize); - - fcb = VTOFCB((struct vnode *)vcb->allocationsRefNum); - /* bcopy(vhp->allocationFile.extents, fcb->fcbExtents, sizeof(HFSPlusExtentRecord)); */ - for (i = 0; i < kHFSPlusExtentDensity; i++) { - fcb->fcbExtents[i].startBlock = SWAP_BE32 (vhp->allocationFile.extents[i].startBlock); - fcb->fcbExtents[i].blockCount = SWAP_BE32 (vhp->allocationFile.extents[i].blockCount); - } - fcb->fcbEOF = SWAP_BE64 (vhp->allocationFile.logicalSize); - fcb->fcbPLen = SWAP_BE32 (vhp->allocationFile.totalBlocks) * vcb->blockSize; - fcb->fcbClmpSize = SWAP_BE32 (vhp->allocationFile.clumpSize); - - brelse(bp); + 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; /* * Re-load B-tree header data */ - fcb = VTOFCB((struct vnode *)vcb->extentsRefNum); - if (error = MacToVFSError( BTReloadData(fcb) )) + forkp = VTOF((struct vnode *)vcb->extentsRefNum); + if ( (error = MacToVFSError( BTReloadData((FCB*)forkp) )) ) return (error); - fcb = VTOFCB((struct vnode *)vcb->catalogRefNum); - if (error = MacToVFSError( BTReloadData(fcb) )) + forkp = VTOF((struct vnode *)vcb->catalogRefNum); + if ( (error = MacToVFSError( BTReloadData((FCB*)forkp) )) ) return (error); - /* Now that the catalog is ready, get the volume name */ - /* also picks up the create date in GMT */ - if ((error = MacToVFSError( GetVolumeNameFromCatalog(vcb) ))) + if (hfsmp->hfs_attribute_vp) { + forkp = VTOF(hfsmp->hfs_attribute_vp); + if ( (error = MacToVFSError( BTReloadData((FCB*)forkp) )) ) + return (error); + } + + /* Reload the volume name */ + 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); /* Re-establish private/hidden directory for unlinked files */ - hfsmp->hfs_private_metadata_dir = FindMetaDataDirectory(vcb); - -loop: - simple_lock(&mntvnode_slock); - for (vp = mountp->mnt_vnodelist.lh_first; vp != NULL; vp = nvp) { - if (vp->v_mount != mountp) { - simple_unlock(&mntvnode_slock); - goto loop; - } - nvp = vp->v_mntvnodes.le_next; - - /* - * Invalidate all inactive vnodes. - */ - if (vrecycle(vp, &mntvnode_slock, p)) - goto loop; - - /* - * Invalidate all cached file data. - */ - simple_lock(&vp->v_interlock); - simple_unlock(&mntvnode_slock); - if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK, p)) { - goto loop; - } - if (vinvalbuf(vp, 0, cred, p, 0, 0)) - panic("hfs_reload: dirty2"); - - /* - * Re-read hfsnode data for all active vnodes (non-metadata files). - */ - hp = VTOH(vp); - if ((vp->v_flag & VSYSTEM) == 0) { - hfsCatalogInfo catInfo; - - /* lookup by fileID since name could have changed */ - catInfo.hint = kNoHint; - INIT_CATALOGDATA(&catInfo.nodeData, 0); - - if ((error = hfs_getcatalog(vcb, H_FILEID(hp), NULL, -1, &catInfo))) { - vput(vp); - CLEAN_CATALOGDATA(&catInfo.nodeData); - return (error); - } - - H_HINT(hp) = catInfo.hint; - if (hp->h_meta->h_metaflags & IN_LONGNAME) - FREE(H_NAME(hp), M_TEMP); - H_NAME(hp) = NULL; - hp->h_meta->h_namelen = 0; - CopyCatalogToObjectMeta(&catInfo, vp, hp->h_meta); - CopyCatalogToFCB(&catInfo, vp); - - CLEAN_CATALOGDATA(&catInfo.nodeData); - } - - vput(vp); - simple_lock(&mntvnode_slock); - } - simple_unlock(&mntvnode_slock); + FindMetaDataDirectory(vcb); + /* In case any volume information changed to trigger a notification */ + hfs_generate_volume_notifications(hfsmp); + return (0); } @@ -829,48 +755,42 @@ loop: /* * Common code for mount and mountroot */ -int -hfs_mountfs(struct vnode *devvp, struct mount *mp, struct proc *p, struct hfs_mount_args *args) +static int +hfs_mountfs(struct vnode *devvp, struct mount *mp, struct hfs_mount_args *args, + vfs_context_t context) { - int retval = E_NONE; - register struct hfsmount *hfsmp; - struct buf *bp; - dev_t dev; - HFSMasterDirectoryBlock *mdbp; - int ronly; - struct ucred *cred; + 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; - u_int64_t blkcnt; + daddr64_t blkcnt; u_int32_t blksize; u_int32_t minblksize; - DBG_VFS(("hfs_mountfs: mp = 0x%lX\n", (u_long)mp)); - - dev = devvp->v_rdev; - cred = p ? p->p_ucred : NOCRED; - /* - * Disallow multiple mounts of the same device. - * Disallow mounting of a device that is currently in use - * (except for root, which might share swap device for miniroot). - * Flush out any old buffers remaining from a previous use. - */ - if ((retval = vfs_mountedon(devvp))) - return (retval); - if ((vcount(devvp) > 1) && (devvp != rootvp)) - return (EBUSY); - if ((retval = vinvalbuf(devvp, V_SAVE, cred, p, 0, 0))) - return (retval); + u_int32_t iswritable; + daddr64_t mdb_offset; - ronly = (mp->mnt_flag & MNT_RDONLY) != 0; - DBG_VFS(("hfs_mountfs: opening device...\n")); - if ((retval = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, p))) - return (retval); + 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; + /* Advisory locking should be handled at the VFS layer */ + vfs_setlocklocal(mp); + /* Get the real physical block size. */ - if (VOP_IOCTL(devvp, DKIOCGETBLOCKSIZE, (caddr_t)&blksize, 0, cred, p)) { + if (VNOP_IOCTL(devvp, DKIOCGETBLOCKSIZE, (caddr_t)&blksize, 0, context)) { retval = ENXIO; goto error_exit; } @@ -878,39 +798,41 @@ hfs_mountfs(struct vnode *devvp, struct mount *mp, struct proc *p, struct hfs_mo if (blksize > 512) { u_int32_t size512 = 512; - if (VOP_IOCTL(devvp, DKIOCSETBLOCKSIZE, (caddr_t)&size512, FWRITE, cred, p)) { + if (VNOP_IOCTL(devvp, DKIOCSETBLOCKSIZE, (caddr_t)&size512, FWRITE, context)) { retval = ENXIO; goto error_exit; } } /* Get the number of 512 byte physical blocks. */ - if (VOP_IOCTL(devvp, DKIOCGETBLOCKCOUNT, (caddr_t)&blkcnt, 0, cred, p)) { + if (VNOP_IOCTL(devvp, DKIOCGETBLOCKCOUNT, (caddr_t)&blkcnt, 0, context)) { retval = ENXIO; goto error_exit; } /* Compute an accurate disk size (i.e. within 512 bytes) */ - disksize = blkcnt * (u_int64_t)512; + disksize = (u_int64_t)blkcnt * (u_int64_t)512; /* - * For large volumes use a 4K physical block size. + * On Tiger it is not necessary to switch the device + * block size to be 4k if there are more than 31-bits + * worth of blocks but to insure compatibility with + * pre-Tiger systems we have to do it. */ if (blkcnt > (u_int64_t)0x000000007fffffff) { minblksize = blksize = 4096; } - + /* Now switch to our prefered physical block size. */ if (blksize > 512) { - if (VOP_IOCTL(devvp, DKIOCSETBLOCKSIZE, (caddr_t)&blksize, FWRITE, cred, p)) { + if (VNOP_IOCTL(devvp, DKIOCSETBLOCKSIZE, (caddr_t)&blksize, FWRITE, context)) { retval = ENXIO; goto error_exit; } /* Get the count of physical blocks. */ - if (VOP_IOCTL(devvp, DKIOCGETBLOCKCOUNT, (caddr_t)&blkcnt, 0, cred, p)) { + if (VNOP_IOCTL(devvp, DKIOCGETBLOCKCOUNT, (caddr_t)&blkcnt, 0, context)) { retval = ENXIO; goto error_exit; } } - /* * At this point: * minblksize is the minimum physical block size @@ -918,42 +840,47 @@ hfs_mountfs(struct vnode *devvp, struct mount *mp, struct proc *p, struct hfs_mo * blkcnt has the total number of physical blocks */ - devvp->v_specsize = blksize; - - /* cache the IO attributes */ - if ((retval = vfs_init_io_attributes(devvp, mp))) { - printf("hfs_mountfs: vfs_init_io_attributes returned %d\n", - retval); - return (retval); - } - - if ((retval = meta_bread(devvp, HFS_PRI_SECTOR(blksize), blksize, cred, &bp))) { + mdb_offset = (daddr64_t)HFS_PRI_SECTOR(blksize); + if ((retval = (int)buf_meta_bread(devvp, mdb_offset, blksize, cred, &bp))) { goto error_exit; } - mdbp = (HFSMasterDirectoryBlock*) (bp->b_data + HFS_PRI_OFFSET(blksize)); + 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)); + + /* + * Init the volume information structure + */ + + 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; /* Make VFSTOHFS work */ + 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]); - simple_lock_init(&hfsmp->hfs_renamelock); - - /* - * Init the volume information structure - */ - mp->mnt_data = (qaddr_t)hfsmp; - hfsmp->hfs_mp = mp; /* Make VFSTOHFS work */ - hfsmp->hfs_vcb.vcb_hfsmp = hfsmp; /* Make VCBTOHFS work */ - hfsmp->hfs_raw_dev = devvp->v_rdev; - hfsmp->hfs_devvp = devvp; - hfsmp->hfs_phys_block_size = blksize; - hfsmp->hfs_phys_block_count = blkcnt; - hfsmp->hfs_fs_ronly = ronly; - hfsmp->hfs_unknownpermissions = ((mp->mnt_flag & MNT_UNKNOWNPERMISSIONS) != 0); 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); /* tell the VFS */ if (args->hfs_mask != (mode_t)VNOVAL) { hfsmp->hfs_dir_mask = args->hfs_mask & ALLPERMS; if (args->flags & HFSFSMNT_NOXONFILES) { @@ -964,37 +891,53 @@ hfs_mountfs(struct vnode *devvp, struct mount *mp, struct proc *p, struct hfs_mo } else { hfsmp->hfs_dir_mask = UNKNOWNPERMISSIONS & ALLPERMS; /* 0777: rwx---rwx */ hfsmp->hfs_file_mask = UNKNOWNPERMISSIONS & DEFFILEMODE; /* 0666: no --x by default? */ - }; + } + if ((args->flags != (int)VNOVAL) && (args->flags & HFSFSMNT_WRAPPER)) + mntwrapper = 1; } else { /* Even w/o explicit mount arguments, MNT_UNKNOWNPERMISSIONS requires setting up uid, gid, and mask: */ - if (mp->mnt_flag & MNT_UNKNOWNPERMISSIONS) { + 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); /* tell the VFS */ hfsmp->hfs_dir_mask = UNKNOWNPERMISSIONS & ALLPERMS; /* 0777: rwx---rwx */ hfsmp->hfs_file_mask = UNKNOWNPERMISSIONS & DEFFILEMODE; /* 0666: no --x by default? */ - }; - }; + } + } + + /* Find out if disk media is writable. */ + 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; + } + + // record the current time at which we're mounting this volume + { + struct timeval tv; + microtime(&tv); + hfsmp->hfs_mount_time = tv.tv_sec; + } /* Mount a standard HFS disk */ if ((SWAP_BE16(mdbp->drSigWord) == kHFSSigWord) && - (SWAP_BE16(mdbp->drEmbedSigWord) != kHFSPlusSigWord)) { - if (devvp == rootvp) { + (mntwrapper || (SWAP_BE16(mdbp->drEmbedSigWord) != kHFSPlusSigWord))) { + if ((vfs_flags(mp) & MNT_ROOTFS)) { retval = EINVAL; /* Cannot root from HFS standard disks */ goto error_exit; } /* HFS disks can only use 512 byte physical blocks */ if (blksize > kHFSBlockSize) { blksize = kHFSBlockSize; - if (VOP_IOCTL(devvp, DKIOCSETBLOCKSIZE, (caddr_t)&blksize, FWRITE, cred, p)) { + if (VNOP_IOCTL(devvp, DKIOCSETBLOCKSIZE, (caddr_t)&blksize, FWRITE, context)) { retval = ENXIO; goto error_exit; } - if (VOP_IOCTL(devvp, DKIOCGETBLOCKCOUNT, (caddr_t)&blkcnt, 0, cred, p)) { + if (VNOP_IOCTL(devvp, DKIOCGETBLOCKCOUNT, (caddr_t)&blkcnt, 0, context)) { retval = ENXIO; goto error_exit; } - /* XXX do we need to call vfs_init_io_attributes again ? */ - devvp->v_specsize = blksize; hfsmp->hfs_phys_block_size = blksize; hfsmp->hfs_phys_block_count = blkcnt; } @@ -1006,7 +949,8 @@ hfs_mountfs(struct vnode *devvp, struct mount *mp, struct proc *p, struct hfs_mo gTimeZone = args->hfs_timezone; } - retval = hfs_getconverter(hfsmp->hfs_encoding, &hfsmp->hfs_get_unicode, &hfsmp->hfs_get_hfsname); + retval = hfs_getconverter(hfsmp->hfs_encoding, &hfsmp->hfs_get_unicode, + &hfsmp->hfs_get_hfsname); if (retval) goto error_exit; @@ -1017,6 +961,7 @@ hfs_mountfs(struct vnode *devvp, struct mount *mp, struct proc *p, struct hfs_mo } else /* Mount an HFS Plus disk */ { HFSPlusVolumeHeader *vhp; off_t embeddedOffset; + int jnl_disable = 0; /* Get the embedded Volume Header */ if (SWAP_BE16(mdbp->drEmbedSigWord) == kHFSPlusSigWord) { @@ -1024,15 +969,6 @@ hfs_mountfs(struct vnode *devvp, struct mount *mp, struct proc *p, struct hfs_mo embeddedOffset += (u_int64_t)SWAP_BE16(mdbp->drEmbedExtent.startBlock) * (u_int64_t)SWAP_BE32(mdbp->drAlBlkSiz); - disksize = (u_int64_t)SWAP_BE16(mdbp->drEmbedExtent.blockCount) * - (u_int64_t)SWAP_BE32(mdbp->drAlBlkSiz); - - hfsmp->hfs_phys_block_count = disksize / blksize; - - brelse(bp); - bp = NULL; - mdbp = NULL; - /* * If the embedded volume doesn't start on a block * boundary, then switch the device to a 512-byte @@ -1044,38 +980,115 @@ hfs_mountfs(struct vnode *devvp, struct mount *mp, struct proc *p, struct hfs_mo " a multiple of physical block size (%d);" " switching to 512\n", blksize); blksize = 512; - if (VOP_IOCTL(devvp, DKIOCSETBLOCKSIZE, - (caddr_t)&blksize, FWRITE, cred, p)) { + if (VNOP_IOCTL(devvp, DKIOCSETBLOCKSIZE, + (caddr_t)&blksize, FWRITE, context)) { retval = ENXIO; goto error_exit; } - if (VOP_IOCTL(devvp, DKIOCGETBLOCKCOUNT, - (caddr_t)&blkcnt, 0, cred, p)) { + if (VNOP_IOCTL(devvp, DKIOCGETBLOCKCOUNT, + (caddr_t)&blkcnt, 0, context)) { retval = ENXIO; goto error_exit; } - /* XXX do we need to call vfs_init_io_attributes again? */ - devvp->v_specsize = blksize; /* Note: relative block count adjustment */ hfsmp->hfs_phys_block_count *= hfsmp->hfs_phys_block_size / blksize; hfsmp->hfs_phys_block_size = blksize; } - retval = meta_bread(devvp, (embeddedOffset / blksize) + HFS_PRI_SECTOR(blksize), - blksize, cred, &bp); - if (retval) + 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; - vhp = (HFSPlusVolumeHeader*) (bp->b_data + HFS_PRI_OFFSET(blksize)); + bcopy((char *)buf_dataptr(bp) + HFS_PRI_OFFSET(blksize), mdbp, 512); + buf_brelse(bp); + bp = NULL; + vhp = (HFSPlusVolumeHeader*) mdbp; } else /* pure HFS+ */ { embeddedOffset = 0; vhp = (HFSPlusVolumeHeader*) mdbp; } + // XXXdbg + // + hfsmp->jnl = NULL; + hfsmp->jvp = NULL; + if (args != NULL && (args->flags & HFSFSMNT_EXTENDED_ARGS) && args->journal_disable) { + jnl_disable = 1; + } + + // + // We only initialize the journal here if the last person + // to mount this volume was journaling aware. Otherwise + // we delay journal initialization until later at the end + // of hfs_MountHFSPlusVolume() because the last person who + // mounted it could have messed things up behind our back + // (so we need to go find the .journal file, make sure it's + // the right size, re-sync up if it was moved, etc). + // + if ( (SWAP_BE32(vhp->lastMountedVersion) == kHFSJMountVersion) + && (SWAP_BE32(vhp->attributes) & kHFSVolumeJournaledMask) + && !jnl_disable) { + + // if we're able to init the journal, mark the mount + // point as journaled. + // + 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 the journal failed to open, then set the lastMountedVersion + // to be "FSK!" which fsck_hfs will see and force the fsck instead + // of just bailing out because the volume is journaled. + 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); + // clear this so the error exit path won't try to use it + bp = NULL; + } + } + + // if this isn't the root device just bail out. + // If it is the root device we just continue on + // in the hopes that fsck_hfs will be able to + // fix any damage that exists on the volume. + if ( !(vfs_flags(mp) & MNT_ROOTFS)) { + retval = EINVAL; + goto error_exit; + } + } + } + // XXXdbg + (void) hfs_getconverter(0, &hfsmp->hfs_get_unicode, &hfsmp->hfs_get_hfsname); - retval = hfs_MountHFSPlusVolume(hfsmp, vhp, embeddedOffset, disksize, p); + retval = hfs_MountHFSPlusVolume(hfsmp, vhp, embeddedOffset, disksize, p, args, cred); /* * If the backend didn't like our physical blocksize * then retry with physical blocksize of 512. @@ -1084,60 +1097,149 @@ hfs_mountfs(struct vnode *devvp, struct mount *mp, struct proc *p, struct hfs_mo printf("HFS Mount: could not use physical block size " "(%d) switching to 512\n", blksize); blksize = 512; - if (VOP_IOCTL(devvp, DKIOCSETBLOCKSIZE, (caddr_t)&blksize, FWRITE, cred, p)) { + if (VNOP_IOCTL(devvp, DKIOCSETBLOCKSIZE, (caddr_t)&blksize, FWRITE, context)) { retval = ENXIO; goto error_exit; } - if (VOP_IOCTL(devvp, DKIOCGETBLOCKCOUNT, (caddr_t)&blkcnt, 0, cred, p)) { + if (VNOP_IOCTL(devvp, DKIOCGETBLOCKCOUNT, (caddr_t)&blkcnt, 0, context)) { retval = ENXIO; goto error_exit; } - /* XXX do we need to call vfs_init_io_attributes again ? */ devvp->v_specsize = blksize; /* Note: relative block count adjustment (in case this is an embedded volume). */ hfsmp->hfs_phys_block_count *= hfsmp->hfs_phys_block_size / blksize; hfsmp->hfs_phys_block_size = blksize; + if (hfsmp->jnl) { + // close and re-open this with the new block size + 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 the journal failed to open, then set the lastMountedVersion + // to be "FSK!" which fsck_hfs will see and force the fsck instead + // of just bailing out because the volume is journaled. + 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); + // clear this so the error exit path won't try to use it + bp = NULL; + } + } + + // if this isn't the root device just bail out. + // If it is the root device we just continue on + // in the hopes that fsck_hfs will be able to + // fix any damage that exists on the volume. + if ( !(vfs_flags(mp) & MNT_ROOTFS)) { + retval = EINVAL; + goto error_exit; + } + } + } + /* Try again with a smaller block size... */ - retval = hfs_MountHFSPlusVolume(hfsmp, vhp, embeddedOffset, disksize, p); + retval = hfs_MountHFSPlusVolume(hfsmp, vhp, embeddedOffset, disksize, p, args, cred); } if (retval) (void) hfs_relconverter(0); } + // save off a snapshot of the mtime from the previous mount + // (for matador). + hfsmp->hfs_last_mounted_mtime = hfsmp->hfs_mtime; + if ( retval ) { goto error_exit; } - brelse(bp); - bp = NULL; + 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) { + /* + * Set the free space warning levels for a non-root volume: + * + * Set the lower freespace limit (the level that will trigger a warning) + * to 5% of the volume size or 250MB, whichever is less, and the desired + * level (which will cancel the alert request) to 1/2 above that limit. + * Start looking for free space to drop below this level and generate a + * warning immediately if needed: + */ + 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 { + /* + * Set the free space warning levels for the root volume: + * + * Set the lower freespace limit (the level that will trigger a warning) + * to 1% of the volume size or 50MB, whichever is less, and the desired + * level (which will cancel the alert request) to 2% or 75MB, whichever is less. + */ + 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); + }; + + /* + * Start looking for free space to drop below this level and generate a + * warning immediately if needed: + */ + hfsmp->hfs_notification_conditions = 0; + hfs_generate_volume_notifications(hfsmp); - mp->mnt_stat.f_fsid.val[0] = (long)dev; - mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum; - mp->mnt_maxsymlinklen = 0; - devvp->v_specflags |= SI_MOUNTEDON; - - if (ronly == 0) { - hfsmp->hfs_fs_clean = 0; - if (HFSTOVCB(hfsmp)->vcbSigWord == kHFSPlusSigWord) - (void) hfs_flushvolumeheader(hfsmp, MNT_WAIT); - else - (void) hfs_flushMDB(hfsmp, MNT_WAIT); - } - goto std_exit; + if (ronly == 0) { + (void) hfs_flushvolumeheader(hfsmp, MNT_WAIT, 0); + } + FREE(mdbp, M_TEMP); + return (0); error_exit: - DBG_VFS(("hfs_mountfs: exiting with error %d...\n", retval)); - - if (bp) - brelse(bp); - (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, cred, p); - if (hfsmp) { - FREE(hfsmp, M_HFSMNT); - mp->mnt_data = (qaddr_t)0; - } - -std_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); } @@ -1147,175 +1249,382 @@ std_exit: * Nothing to do at the moment. */ /* ARGSUSED */ -int hfs_start(mp, flags, p) -struct mount *mp; -int flags; -struct proc *p; +static int +hfs_start(__unused struct mount *mp, __unused int flags, __unused vfs_context_t context) { - DBG_FUNC_NAME("hfs_start"); - DBG_PRINT_FUNC_NAME(); - - return (0); + return (0); } /* * unmount system call */ -int -hfs_unmount(mp, mntflags, p) - struct mount *mp; - int mntflags; - struct proc *p; +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; - if (mntflags & MNT_FORCE) + force = 0; + if (mntflags & MNT_FORCE) { flags |= FORCECLOSE; + force = 1; + } - if ((retval = hfs_flushfiles(mp, flags))) + if ((retval = hfs_flushfiles(mp, flags, p)) && !force) return (retval); + if (hfsmp->hfs_flags & HFS_METADATA_ZONE) + (void) hfs_recording_suspend(hfsmp); + /* * Flush out the b-trees, volume bitmap and Volume Header */ - if (hfsmp->hfs_fs_ronly == 0) { - retval = VOP_FSYNC(HFSTOVCB(hfsmp)->catalogRefNum, NOCRED, MNT_WAIT, p); - if (retval && ((mntflags & MNT_FORCE) == 0)) - return (retval); + 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; + } - retval = VOP_FSYNC(HFSTOVCB(hfsmp)->extentsRefNum, NOCRED, MNT_WAIT, p); - if (retval && ((mntflags & MNT_FORCE) == 0)) - return (retval); + (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 (retval = VOP_FSYNC(hfsmp->hfs_devvp, NOCRED, MNT_WAIT, p)) { - if ((mntflags & MNT_FORCE) == 0) - return (retval); + 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 /* See if this volume is damaged, is so do not unmount cleanly */ if (HFSTOVCB(hfsmp)->vcbFlags & kHFS_DamagedVolume) { - hfsmp->hfs_fs_clean = 0; HFSTOVCB(hfsmp)->vcbAtrb &= ~kHFSVolumeUnmountedMask; } else { - hfsmp->hfs_fs_clean = 1; - HFSTOVCB(hfsmp)->vcbAtrb |= kHFSVolumeUnmountedMask; + HFSTOVCB(hfsmp)->vcbAtrb |= kHFSVolumeUnmountedMask; } - if (HFSTOVCB(hfsmp)->vcbSigWord == kHFSPlusSigWord) - retval = hfs_flushvolumeheader(hfsmp, MNT_WAIT); - else - retval = hfs_flushMDB(hfsmp, MNT_WAIT); - +#else + HFSTOVCB(hfsmp)->vcbAtrb |= kHFSVolumeUnmountedMask; +#endif + retval = hfs_flushvolumeheader(hfsmp, MNT_WAIT, 0); if (retval) { - hfsmp->hfs_fs_clean = 0; HFSTOVCB(hfsmp)->vcbAtrb &= ~kHFSVolumeUnmountedMask; - if ((mntflags & MNT_FORCE) == 0) - return (retval); /* could not flush everything */ + if (!force) + goto err_exit; /* could not flush everything */ } + + hfs_end_transaction(hfsmp); + started_tr = 0; } + if (hfsmp->jnl) { + journal_flush(hfsmp->jnl); + } + /* * Invalidate our caches and release metadata vnodes */ (void) hfsUnmount(hfsmp, p); + /* + * Last chance to dump unreferenced system files. + */ + (void) vflush(mp, NULLVP, FORCECLOSE); + if (HFSTOVCB(hfsmp)->vcbSigWord == kHFSSigWord) (void) hfs_relconverter(hfsmp->hfs_encoding); - hfsmp->hfs_devvp->v_specflags &= ~SI_MOUNTEDON; - retval = VOP_CLOSE(hfsmp->hfs_devvp, hfsmp->hfs_fs_ronly ? FREAD : FREAD|FWRITE, - NOCRED, p); - vrele(hfsmp->hfs_devvp); + // XXXdbg + 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; + } + // XXXdbg + +#ifdef HFS_SPARSE_DEV + /* Drop our reference on the backing fs (if any). */ + 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 /* HFS_SPARSE_DEV */ + lck_mtx_destroy(&hfsmp->hfc_mutex, hfs_mutex_group); FREE(hfsmp, M_HFSMNT); - mp->mnt_data = (qaddr_t)0; - return (retval); + return (0); + + err_exit: + if (started_tr) { + hfs_end_transaction(hfsmp); + } + return retval; } /* * Return the root of a filesystem. - * - * OUT - vpp, should be locked and vget()'d (to increment usecount and lock) */ -int hfs_root(mp, vpp) -struct mount *mp; -struct vnode **vpp; +static int +hfs_vfs_root(struct mount *mp, struct vnode **vpp, __unused vfs_context_t context) { - struct vnode *nvp; - int retval; - UInt32 rootObjID = kRootDirID; - - DBG_FUNC_NAME("hfs_root"); - DBG_PRINT_FUNC_NAME(); - - if ((retval = VFS_VGET(mp, &rootObjID, &nvp))) - return (retval); - - *vpp = nvp; - return (0); + return hfs_vget(VFSTOHFS(mp), (cnid_t)kHFSRootFolderID, vpp, 1); } /* * Do operations associated with quotas */ -int hfs_quotactl(mp, cmds, uid, arg, p) -struct mount *mp; -int cmds; -uid_t uid; -caddr_t arg; -struct proc *p; +static int +hfs_quotactl(struct mount *mp, int cmds, uid_t uid, caddr_t datap, vfs_context_t context) { - DBG_FUNC_NAME("hfs_quotactl"); - DBG_PRINT_FUNC_NAME(); + 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; + /* fall through */ + default: + if ( (error = vfs_context_suser(context)) ) + return (error); + } - return (EOPNOTSUPP); + 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 /* QUOTA */ } +/* Subtype is composite of bits */ +#define HFS_SUBTYPE_JOURNALED 0x01 +#define HFS_SUBTYPE_CASESENSITIVE 0x02 +/* bits 2 - 6 reserved */ +#define HFS_SUBTYPE_STANDARDHFS 0x80 /* * Get file system statistics. */ static int -hfs_statfs(mp, sbp, p) - struct mount *mp; - register struct statfs *sbp; - struct proc *p; +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; - - DBG_FUNC_NAME("hfs_statfs"); - DBG_PRINT_FUNC_NAME(); + uint16_t subtype = 0; freeCNIDs = (u_long)0xFFFFFFFF - (u_long)vcb->vcbNxtCNID; - sbp->f_bsize = vcb->blockSize; - sbp->f_iosize = hfsmp->hfs_logBlockSize; - sbp->f_blocks = vcb->totalBlocks; - sbp->f_bfree = vcb->freeBlocks; - sbp->f_bavail = vcb->freeBlocks; - sbp->f_files = vcb->totalBlocks - 2; /* max files is constrained by total blocks */ - sbp->f_ffree = MIN(freeCNIDs, vcb->freeBlocks); - - sbp->f_type = 0; - if (sbp != &mp->mnt_stat) { - sbp->f_type = mp->mnt_vfc->vfc_typenum; - bcopy((caddr_t)mp->mnt_stat.f_mntonname, - (caddr_t)&sbp->f_mntonname[0], MNAMELEN); - bcopy((caddr_t)mp->mnt_stat.f_mntfromname, - (caddr_t)&sbp->f_mntfromname[0], MNAMELEN); + 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)); /* max files is constrained by total blocks */ + sbp->f_ffree = (uint64_t)((unsigned long )(MIN(freeCNIDs, sbp->f_bavail))); + + /* + * Subtypes (flavors) for HFS + * 0: Mac OS Extended + * 1: Mac OS Extended (Journaled) + * 2: Mac OS Extended (Case Sensitive) + * 3: Mac OS Extended (Case Sensitive, Journaled) + * 4 - 127: Reserved + * 128: Mac OS Standard + * + */ + if (hfsmp->hfs_flags & HFS_STANDARD) { + subtype = HFS_SUBTYPE_STANDARDHFS; + } else /* HFS Plus */ { + if (hfsmp->jnl) + subtype |= HFS_SUBTYPE_JOURNALED; + if (hfsmp->hfs_flags & HFS_CASE_SENSITIVE) + subtype |= HFS_SUBTYPE_CASESENSITIVE; } + sbp->f_fssubtype = subtype; + return (0); } +// +// XXXdbg -- this is a callback to be used by the journal to +// get meta data blocks flushed out to disk. +// +// XXXdbg -- be smarter and don't flush *every* block on each +// call. try to only flush some so we don't wind up +// being too synchronous. +// +__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); + + // now make sure the super block is flushed + 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) && (retval != ENXIO)) { + printf("hfs_sync_metadata: can't read volume header at %d! (retval 0x%x)\n", + priIDSector, retval); + } + + if (retval == 0 && ((buf_flags(bp) & (B_DELWRI | B_LOCKED)) == B_DELWRI)) { + buf_bwrite(bp); + } else if (bp) { + buf_brelse(bp); + } + + // the alternate super block... + // XXXdbg - we probably don't need to do this each and every time. + // hfs_btreeio.c:FlushAlternate() should flag when it was + // written... + 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); +} + + + /* * Go through the disk queues to initiate sandbagged IO; * go through the inodes to write those that have been modified; @@ -1323,145 +1632,115 @@ hfs_statfs(mp, sbp, p) * * Note: we are always called with the filesystem marked `MPBUSY'. */ -static int hfs_sync(mp, waitfor, cred, p) -struct mount *mp; -int waitfor; -struct ucred *cred; -struct proc *p; +static int +hfs_sync(struct mount *mp, int waitfor, vfs_context_t context) { - struct vnode *nvp, *vp; - struct hfsnode *hp; - struct hfsmount *hfsmp = VFSTOHFS(mp); - ExtendedVCB *vcb; - struct vnode *meta_vp[3]; - int i; - int error, allerror = 0; - - DBG_FUNC_NAME("hfs_sync"); - DBG_PRINT_FUNC_NAME(); + 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; /* * During MNT_UPDATE hfs_changefs might be manipulating * vnodes so back off */ - if (mp->mnt_flag & MNT_UPDATE) + if (((uint32_t)vfs_flags(mp)) & MNT_UPDATE) /* XXX MNT_UPDATE may not be visible here */ return (0); - hfsmp = VFSTOHFS(mp); - if (hfsmp->hfs_fs_ronly != 0) { - panic("update: rofs mod"); - }; - - /* - * Write back each 'modified' vnode - */ - -loop:; - simple_lock(&mntvnode_slock); - for (vp = mp->mnt_vnodelist.lh_first; - vp != NULL; - vp = nvp) { - int didhold; - /* - * If the vnode that we are about to sync is no longer - * associated with this mount point, start over. - */ - if (vp->v_mount != mp) { - simple_unlock(&mntvnode_slock); - goto loop; - } - simple_lock(&vp->v_interlock); - nvp = vp->v_mntvnodes.le_next; - hp = VTOH(vp); - - if ((vp->v_flag & VSYSTEM) || (vp->v_type == VNON) || - (((hp->h_nodeflags & (IN_ACCESS | IN_CHANGE | IN_MODIFIED | IN_UPDATE)) == 0) && - (vp->v_dirtyblkhd.lh_first == NULL) && !(vp->v_flag & VHASDIRTY))) { - simple_unlock(&vp->v_interlock); - simple_unlock(&mntvnode_slock); - simple_lock(&mntvnode_slock); - continue; - } + hfsmp = VFSTOHFS(mp); + if (hfsmp->hfs_flags & HFS_READ_ONLY) + return (EROFS); - simple_unlock(&mntvnode_slock); - error = vget(vp, LK_EXCLUSIVE | LK_NOWAIT | LK_INTERLOCK, p); - if (error) { - if (error == ENOENT) - goto loop; - simple_lock(&mntvnode_slock); - continue; - } - - didhold = ubc_hold(vp); - if ((error = VOP_FSYNC(vp, cred, waitfor, p))) { - DBG_ERR(("hfs_sync: error %d calling fsync on vnode 0x%X.\n", error, (u_int)vp)); - allerror = error; - }; - DBG_ASSERT(*((volatile int *)(&(vp)->v_interlock))==0); - VOP_UNLOCK(vp, 0, p); - if (didhold) - ubc_rele(vp); - vrele(vp); - simple_lock(&mntvnode_slock); - }; - - vcb = HFSTOVCB(hfsmp); - meta_vp[0] = vcb->extentsRefNum; - meta_vp[1] = vcb->catalogRefNum; - meta_vp[2] = vcb->allocationsRefNum; /* This is NULL for standard HFS */ - - /* Now sync our three metadata files */ - for (i = 0; i < 3; ++i) { - struct vnode *btvp; - - btvp = meta_vp[i]; - - if ((btvp==0) || (btvp->v_type == VNON) || (btvp->v_mount != mp)) - continue; - simple_lock(&btvp->v_interlock); - hp = VTOH(btvp); - if (((hp->h_nodeflags & (IN_ACCESS | IN_CHANGE | IN_MODIFIED | IN_UPDATE)) == 0) && - (btvp->v_dirtyblkhd.lh_first == NULL) && !(btvp->v_flag & VHASDIRTY)) { - simple_unlock(&btvp->v_interlock); - continue; - } - simple_unlock(&mntvnode_slock); - error = vget(btvp, LK_EXCLUSIVE | LK_NOWAIT | LK_INTERLOCK, p); - if (error) { - simple_lock(&mntvnode_slock); - continue; - } - if ((error = VOP_FSYNC(btvp, cred, waitfor, p))) - allerror = error; - VOP_UNLOCK(btvp, 0, p); - vrele(btvp); - simple_lock(&mntvnode_slock); - }; - - simple_unlock(&mntvnode_slock); - - /* - * Force stale file system control information to be flushed. - */ - if (vcb->vcbSigWord == kHFSSigWord) { - if ((error = VOP_FSYNC(hfsmp->hfs_devvp, cred, waitfor, p))) - allerror = error; - } - /* - * Write back modified superblock. - */ - - if (IsVCBDirty(vcb)) { - if (vcb->vcbSigWord == kHFSPlusSigWord) - error = hfs_flushvolumeheader(hfsmp, waitfor); - else - error = hfs_flushMDB(hfsmp, waitfor); - - if (error) - allerror = error; - }; - - return (allerror); + /* skip over frozen volumes */ + 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; + /* + * hfs_sync_callback will be called for each vnode + * hung off of this mount point... the vnode will be + * properly referenced and unreferenced around the callback + */ + 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; /* This is NULL for standard HFS */ + meta_vp[3] = hfsmp->hfs_attribute_vp; /* Optional file */ + + /* Now sync our three metadata files */ + for (i = 0; i < 4; ++i) { + struct vnode *btvp; + + btvp = meta_vp[i];; + if ((btvp==0) || (vnode_mount(btvp) != mp)) + continue; + + /* XXX use hfs_systemfile_lock instead ? */ + (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); + }; + + /* + * Force stale file system control information to be flushed. + */ + if (vcb->vcbSigWord == kHFSSigWord) { + if ((error = VNOP_FSYNC(hfsmp->hfs_devvp, waitfor, context))) { + allerror = error; + } + } +#if QUOTA + hfs_qsync(mp); +#endif /* QUOTA */ + + hfs_hotfilesync(hfsmp, p); + /* + * Write back modified superblock. + */ + + 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); } @@ -1469,42 +1748,31 @@ loop:; * File handle to vnode * * Have to be really careful about stale file handles: - * - check that the hfsnode number is valid - * - call hfs_vget() to get the locked hfsnode - * - check for an unallocated hfsnode (i_mode == 0) + * - check that the cnode id is valid + * - call hfs_vget() to get the locked cnode + * - check for an unallocated cnode (i_mode == 0) * - check that the given client host has export rights and return * those rights via. exflagsp and credanonp */ -int -hfs_fhtovp(mp, fhp, nam, vpp, exflagsp, credanonp) -register struct mount *mp; -struct fid *fhp; -struct mbuf *nam; -struct vnode **vpp; -int *exflagsp; -struct ucred **credanonp; +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; - struct netcred *np; - DBG_FUNC_NAME("hfs_fhtovp"); - DBG_PRINT_FUNC_NAME(); *vpp = NULL; hfsfhp = (struct hfsfid *)fhp; - /* - * Get the export permission structure for this tuple. - */ - np = vfs_export_lookup(mp, &VFSTOHFS(mp)->hfs_export, nam); - if (np == NULL) { - return EACCES; - }; + if (fhlen < sizeof(struct hfsfid)) + return (EINVAL); - result = VFS_VGET(mp, &hfsfhp->hfsfid_cnid, &nvp); - if (result) return result; - if (nvp == NULL) return ESTALE; + result = hfs_vget(VFSTOHFS(mp), ntohl(hfsfhp->hfsfid_cnid), &nvp, 0); + if (result) { + if (result == ENOENT) + result = ESTALE; + return result; + } /* The createtime can be changed by hfs_setattr or hfs_setattrlist. * For NFS, we are assuming that only if the createtime was moved @@ -1517,16 +1785,15 @@ struct ucred **credanonp; * error prone. Future, would be change the "wrap bit" to a unique * wrap number and use that for generation number. For now do this. */ - if ((hfsfhp->hfsfid_gen < VTOH(nvp)->h_meta->h_crtime)) { - vput(nvp); - return ESTALE; - }; - + if ((ntohl(hfsfhp->hfsfid_gen) < VTOC(nvp)->c_itime)) { + hfs_unlock(VTOC(nvp)); + vnode_put(nvp); + return (ESTALE); + } *vpp = nvp; - *exflagsp = np->netc_exflags; - *credanonp = &np->netc_anon; - - return 0; + + hfs_unlock(VTOC(nvp)); + return (0); } @@ -1534,251 +1801,653 @@ struct ucred **credanonp; * Vnode pointer to File handle */ /* ARGSUSED */ -static int hfs_vptofh(vp, fhp) -struct vnode *vp; -struct fid *fhp; +static int +hfs_vptofh(struct vnode *vp, int *fhlenp, unsigned char *fhp, vfs_context_t context) { - struct hfsnode *hp; + struct cnode *cp; struct hfsfid *hfsfhp; - struct proc *p = current_proc(); - int result; - u_int32_t fileID; - DBG_FUNC_NAME("hfs_vptofh"); - DBG_PRINT_FUNC_NAME(); - hp = VTOH(vp); - hfsfhp = (struct hfsfid *)fhp; - - /* If a file handle is requested for a file on an HFS volume we must be sure - to create the thread record before returning the object id in the filehandle - to make sure the file can be retrieved by fileid if necessary: - */ - if ((vp->v_type == VREG) && ISHFS(VTOVCB(vp))) { - /* Create a thread record and return the FileID [which is the file's fileNumber] */ - /* lock catalog b-tree */ - if ((result = hfs_metafilelocking(VTOHFS(vp), kHFSCatalogFileID, LK_EXCLUSIVE, p)) != 0) return result; - result = hfsCreateFileID(VTOVCB(vp), H_DIRID(hp), H_NAME(hp), H_HINT(hp), &fileID); - (void) hfs_metafilelocking(VTOHFS(vp), kHFSCatalogFileID, LK_RELEASE, p); - if (result) { - DBG_ERR(("hfs_vptofh: error %d on CreateFileIDRef.\n", result)); - return result; - }; - DBG_ASSERT(fileID == H_FILEID(hp)); - }; + if (ISHFS(VTOVCB(vp))) + return (ENOTSUP); /* hfs standard is not exportable */ - hfsfhp->hfsfid_len = sizeof(struct hfsfid); - hfsfhp->hfsfid_pad = 0; - hfsfhp->hfsfid_cnid = H_FILEID(hp); - hfsfhp->hfsfid_gen = hp->h_meta->h_crtime; + if (*fhlenp < (int)sizeof(struct hfsfid)) + return (EOVERFLOW); + + cp = VTOC(vp); + hfsfhp = (struct hfsfid *)fhp; + hfsfhp->hfsfid_cnid = htonl(cp->c_fileid); + hfsfhp->hfsfid_gen = htonl(cp->c_itime); + *fhlenp = sizeof(struct hfsfid); - return 0; + return (0); } /* * Initial HFS filesystems, done only once. */ -int -hfs_init(vfsp) -struct vfsconf *vfsp; +static int +hfs_init(__unused struct vfsconf *vfsp) { - int i; - static int done = 0; - OSErr err; + static int done = 0; - DBG_FUNC_NAME("hfs_init"); - DBG_PRINT_FUNC_NAME(); + if (done) + return (0); + done = 1; + hfs_chashinit(); + hfs_converterinit(); +#if QUOTA + dqinit(); +#endif /* QUOTA */ + + 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); + - if (done) - return (0); - done = 1; - hfs_vhashinit(); - hfs_converterinit(); + return (0); +} - simple_lock_init (&gBufferPtrListLock); +static int +hfs_getmountpoint(vp, hfsmpp) + struct vnode *vp; + struct hfsmount **hfsmpp; +{ + struct hfsmount * hfsmp; + char fstypename[MFSNAMELEN]; - for (i = BUFFERPTRLISTSIZE - 1; i >= 0; --i) { - gBufferAddress[i] = NULL; - gBufferHeaderPtr[i] = NULL; - }; - gBufferListIndex = 0; + if (vp == NULL) + return (EINVAL); + + if (!vnode_isvroot(vp)) + return (EINVAL); - /* - * Allocate Catalog Iterator cache... - */ - err = InitCatalogCache(); + vnode_vfsname(vp, fstypename); + if (strcmp(fstypename, "hfs") != 0) + return (EINVAL); - return E_NONE; -} + hfsmp = VTOHFS(vp); + if (HFSTOVCB(hfsmp)->vcbSigWord == kHFSSigWord) + return (EINVAL); -/* - * fast filesystem related variables. - */ -static int hfs_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p) -int *name; -u_int namelen; -void *oldp; -size_t *oldlenp; -void *newp; -size_t newlen; -struct proc *p; -{ - DBG_FUNC_NAME("hfs_sysctl"); - DBG_PRINT_FUNC_NAME(); + *hfsmpp = hfsmp; - return (EOPNOTSUPP); + return (0); } +// XXXdbg +#include -/* This will return a vnode of either a directory or a data vnode based on an object id. If - * it is a file id, its data fork will be returned. +/* + * HFS filesystem related variables. */ -int -hfs_vget(struct mount *mp, - void *ino, - struct vnode **vpp) +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 hfsmount *hfsmp; - dev_t dev; - int retval = E_NONE; + struct proc *p = vfs_context_proc(context); + int error; + struct hfsmount *hfsmp; - DBG_VFS(("hfs_vget: ino = %ld\n", *(UInt32 *)ino)); + /* all sysctl names at this level are terminal */ - /* Check if unmount in progress */ - if (mp->mnt_kern_flag & MNTK_UNMOUNT) { - *vpp = NULL; - return (EPERM); - } + if (name[0] == HFS_ENCODINGBIAS) { + u_int32_t bias; - hfsmp = VFSTOHFS(mp); - dev = hfsmp->hfs_raw_dev; - - /* First check to see if it is in the cache */ - *vpp = hfs_vhashget(dev, *(UInt32 *)ino, kDefault); - - /* hide open files that have been deleted */ - if (*vpp != NULL) { - if ((VTOH(*vpp)->h_meta->h_metaflags & IN_NOEXISTS) || - (hfsmp->hfs_private_metadata_dir != 0) && - (H_DIRID(VTOH(*vpp)) == hfsmp->hfs_private_metadata_dir)) { - vput(*vpp); - retval = ENOENT; - goto Err_Exit; - } - } - - /* The vnode is not in the cache, so lets make it */ - if (*vpp == NULL) - { - hfsCatalogInfo catInfo; - struct proc *p = current_proc(); - UInt8 forkType; - - INIT_CATALOGDATA(&catInfo.nodeData, 0); - catInfo.hint = kNoHint; - /* Special-case the root's parent directory (DirID = 1) because - it doesn't actually exist in the catalog: */ - if ((*vpp == NULL) && (*(UInt32 *)ino == kRootParID)) { - bzero(&catInfo, sizeof(catInfo)); - catInfo.nodeData.cnd_type = kCatalogFolderNode; - catInfo.nodeData.cnm_nameptr = catInfo.nodeData.cnm_namespace; - catInfo.nodeData.cnm_namespace[0] = '/'; - catInfo.nodeData.cnm_length = 1; - catInfo.nodeData.cnd_nodeID = kRootParID; - catInfo.nodeData.cnm_parID = kRootParID; - catInfo.nodeData.cnd_valence = 1; - catInfo.nodeData.cnd_ownerID = 0; - catInfo.nodeData.cnd_groupID = 0; - catInfo.nodeData.cnd_mode = (S_IFDIR | S_IRWXU | S_IRWXG | S_IRWXO); - } else { - - /* lock catalog b-tree */ - retval = hfs_metafilelocking(hfsmp, kHFSCatalogFileID, LK_SHARED, p); - if (retval != E_NONE) goto Lookup_Err_Exit; - - retval = hfs_getcatalog(VFSTOVCB(mp), *(UInt32 *)ino, NULL, -1, &catInfo); - - /* unlock catalog b-tree */ - (void) hfs_metafilelocking(hfsmp, kHFSCatalogFileID, LK_RELEASE, p); - - if (retval != E_NONE) goto Lookup_Err_Exit; - - /* hide open files that have been deleted */ - if ((hfsmp->hfs_private_metadata_dir != 0) && - (catInfo.nodeData.cnm_parID == hfsmp->hfs_private_metadata_dir)) { - retval = ENOENT; - goto Lookup_Err_Exit; - }; - }; - - forkType = (catInfo.nodeData.cnd_type == kCatalogFolderNode) ? kDirectory : kDataFork; - retval = hfs_vcreate(VFSTOVCB(mp), &catInfo, forkType, vpp); - -Lookup_Err_Exit: - CLEAN_CATALOGDATA(&catInfo.nodeData); - }; + bias = hfs_getencodingbias(); + error = sysctl_int(oldp, oldlenp, newp, newlen, &bias); + if (error == 0 && newp) + hfs_setencodingbias(bias); + return (error); - UBCINFOCHECK("hfs_vget", *vpp); + } 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); -Err_Exit: + } 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); - /* rember if a parent directory was looked up by CNID */ - if (retval == 0 && ((*vpp)->v_type == VDIR) - && lockstatus(&mp->mnt_lock) != LK_SHARED) - VTOH(*vpp)->h_nodeflags |= IN_BYCNID; + } else if (name[0] == HFS_ENABLE_JOURNALING) { + // make the file system journaled... + 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; + + /* Only root can enable journaling */ + if (!is_suser()) { + return (EPERM); + } + if (vp == NULL) + return EINVAL; - return (retval); + 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; + } -/* - * Flush out all the files in a filesystem. - */ -int -hfs_flushfiles(struct mount *mp, int flags) -{ - int error; + 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) { - error = vflush(mp, NULLVP, (SKIPSYSTEM | SKIPSWAP | flags)); - error = vflush(mp, NULLVP, (SKIPSYSTEM | flags)); + 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); - return (error); -} + // make sure these both exist! + if ( GetFileInfo(vcb, kHFSRootFolderID, ".journal_info_block", &jinfo_attr, &jinfo_fork) == 0 + || GetFileInfo(vcb, kHFSRootFolderID, ".journal", &jnl_attr, &jnl_fork) == 0) { -short hfs_flushMDB(struct hfsmount *hfsmp, int waitfor) -{ - ExtendedVCB *vcb = HFSTOVCB(hfsmp); - FCB *fcb; - HFSMasterDirectoryBlock *mdb; - struct buf *bp; - int retval; - int size = kMDBSize; /* 512 */ - ByteCount namelen; + return EINVAL; + } - if (vcb->vcbSigWord != kHFSSigWord) - 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; - DBG_ASSERT(hfsmp->hfs_devvp != NULL); + return EINVAL; + } - retval = bread(hfsmp->hfs_devvp, IOBLKNOFORBLK(kMasterDirectoryBlock, size), - IOBYTECCNTFORBLK(kMasterDirectoryBlock, kMDBSize, size), NOCRED, &bp); - if (retval) { - DBG_VFS((" hfs_flushMDB bread return error! (%d)\n", retval)); - if (bp) brelse(bp); - return retval; - } + hfs_global_exclusive_lock_acquire(hfsmp); + + /* + * Flush all dirty metadata buffers. + */ + buf_flushdirtyblks(hfsmp->hfs_devvp, MNT_WAIT, 0, "hfs_sysctl"); + buf_flushdirtyblks(hfsmp->hfs_extents_vp, MNT_WAIT, 0, "hfs_sysctl"); + buf_flushdirtyblks(hfsmp->hfs_catalog_vp, MNT_WAIT, 0, "hfs_sysctl"); + buf_flushdirtyblks(hfsmp->hfs_allocation_vp, MNT_WAIT, 0, "hfs_sysctl"); + if (hfsmp->hfs_attribute_vp) + buf_flushdirtyblks(hfsmp->hfs_attribute_vp, MNT_WAIT, 0, "hfs_sysctl"); + + HFSTOVCB(hfsmp)->vcbJinfoBlock = name[1]; + HFSTOVCB(hfsmp)->vcbAtrb |= kHFSVolumeJournaledMask; + hfsmp->jvp = jvp; + hfsmp->jnl = jnl; + + // save this off for the hack-y check in hfs_remove() + 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) { + // clear the journaling bit + struct vnode *vp = p->p_fd->fd_cdir; + + /* Only root can disable journaling */ + 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); + + // Lights out for you buddy! + 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); /* we're new style vfs sysctl. */ + + 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); +} + + +/* + * Look up an HFS object by ID. + * + * The object is returned with an iocount reference and the cnode locked. + * + * If the object is a file then it will represent the data fork. + */ +__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; + + /* Check for cnids that should't be exported. */ + if ((cnid < kHFSFirstUserCatalogNodeID) + && (cnid != kHFSRootFolderID && cnid != kHFSRootParentID)) + return (ENOENT); + + /* Don't export HFS Private Data dir. */ + if (cnid == hfsmp->hfs_privdir_desc.cd_cnid) + return (ENOENT); + + /* + * Check the hash first + */ + 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)); + + /* + * Not in hash, lookup in catalog + */ + 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 we just looked up a raw hardlink inode, + * then finish initializing it. + */ + 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; + } + } + + /* + * Supply hfs_getnewvnode with a component name. + */ + 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); + + /* XXX should we supply the parent as well... ? */ + 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); +} + + +/* + * Flush out all the files in a filesystem. + */ +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 + /* + * The open quota files have an indirect reference on + * the root directory vnode. We must account for this + * extra reference when doing the intial vflush. + */ + quotafilecnt = 0; + if (((unsigned int)vfs_flags(mp)) & MNT_QUOTA) { + + /* Find out how many quota files we have open. */ + for (i = 0; i < MAXQUOTAS; i++) { + if (hfsmp->hfs_qfiles[i].qf_vp != NULLVP) + ++quotafilecnt; + } + + /* Obtain the root vnode so we can skip over it. */ + skipvp = hfs_chash_getvnode(hfsmp->hfs_raw_dev, kHFSRootFolderID, 0, 0); + } +#endif /* QUOTA */ + + 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) { + /* + * See if there are additional references on the + * root vp besides the ones obtained from the open + * quota files and the hfs_chash_getvnode call above. + */ + if ((error == 0) && + (vnode_isinuse(skipvp, quotafilecnt))) { + error = EBUSY; /* root directory is still open */ + } + 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 /* QUOTA */ + + return (error); +} + +/* + * Update volume encoding bitmap (HFS Plus only) + */ +__private_extern__ +void +hfs_setencodingbits(struct hfsmount *hfsmp, u_int32_t encoding) +{ +#define kIndexMacUkrainian 48 /* MacUkrainian encoding is 152 */ +#define kIndexMacFarsi 49 /* MacFarsi encoding is 140 */ + + 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); + } +} + +/* + * Update volume stats + * + * On journal volumes this will cause a volume header flush + */ +__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; + } - DBG_ASSERT(bp != NULL); - DBG_ASSERT(bp->b_data != NULL); - DBG_ASSERT(bp->b_bcount == size); + lck_mtx_lock(&hfsmp->hfs_mutex); - mdb = (HFSMasterDirectoryBlock *)((char *)bp->b_data + IOBYTEOFFSETFORBLK(kMasterDirectoryBlock, size)); + mdb = (HFSMasterDirectoryBlock *)(buf_dataptr(bp) + HFS_PRI_OFFSET(sectorsize)); - VCB_LOCK(vcb); - mdb->drCrDate = SWAP_BE32 (UTCToLocal(vcb->vcbCrDate)); - mdb->drLsMod = SWAP_BE32 (UTCToLocal(vcb->vcbLsMod)); - mdb->drAtrb = SWAP_BE16 (vcb->vcbAtrb); + 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); @@ -1791,7 +2460,7 @@ short hfs_flushMDB(struct hfsmount *hfsmp, int waitfor) if (retval) retval = utf8_to_mac_roman(namelen, vcb->vcbVN, mdb->drVN); - mdb->drVolBkUp = SWAP_BE32 (UTCToLocal(vcb->vcbVolBkUp)); + 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); @@ -1799,188 +2468,1346 @@ short hfs_flushMDB(struct hfsmount *hfsmp, int waitfor) bcopy(vcb->vcbFndrInfo, mdb->drFndrInfo, sizeof(mdb->drFndrInfo)); - fcb = VTOFCB(vcb->extentsRefNum); - /* HFSPlusToHFSExtents(fcb->fcbExtents, mdb->drXTExtRec); */ - mdb->drXTExtRec[0].startBlock = SWAP_BE16 (fcb->fcbExtents[0].startBlock); - mdb->drXTExtRec[0].blockCount = SWAP_BE16 (fcb->fcbExtents[0].blockCount); - mdb->drXTExtRec[1].startBlock = SWAP_BE16 (fcb->fcbExtents[1].startBlock); - mdb->drXTExtRec[1].blockCount = SWAP_BE16 (fcb->fcbExtents[1].blockCount); - mdb->drXTExtRec[2].startBlock = SWAP_BE16 (fcb->fcbExtents[2].startBlock); - mdb->drXTExtRec[2].blockCount = SWAP_BE16 (fcb->fcbExtents[2].blockCount); - - mdb->drXTFlSize = SWAP_BE32 (fcb->fcbPLen); - mdb->drXTClpSiz = SWAP_BE32 (fcb->fcbClmpSize); + 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; - fcb = VTOFCB(vcb->catalogRefNum); - /* HFSPlusToHFSExtents(fcb->fcbExtents, mdb->drCTExtRec); */ - mdb->drCTExtRec[0].startBlock = SWAP_BE16 (fcb->fcbExtents[0].startBlock); - mdb->drCTExtRec[0].blockCount = SWAP_BE16 (fcb->fcbExtents[0].blockCount); - mdb->drCTExtRec[1].startBlock = SWAP_BE16 (fcb->fcbExtents[1].startBlock); - mdb->drCTExtRec[1].blockCount = SWAP_BE16 (fcb->fcbExtents[1].blockCount); - mdb->drCTExtRec[2].startBlock = SWAP_BE16 (fcb->fcbExtents[2].startBlock); - mdb->drCTExtRec[2].blockCount = SWAP_BE16 (fcb->fcbExtents[2].blockCount); - - mdb->drCTFlSize = SWAP_BE32 (fcb->fcbPLen); - mdb->drCTClpSiz = SWAP_BE32 (fcb->fcbClmpSize); - VCB_UNLOCK(vcb); - - if (waitfor != MNT_WAIT) - bawrite(bp); - else - retval = VOP_BWRITE(bp); - + 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 requested, flush out the alternate MDB */ + 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); } - -short hfs_flushvolumeheader(struct hfsmount *hfsmp, int waitfor) +/* + * Flush any dirty in-memory mount data to the on-disk + * volume header. + * + * Note: the on-disk volume signature is intentionally + * not flushed since the on-disk "H+" and "HX" signatures + * are always stored in-memory as "H+". + */ +__private_extern__ +int +hfs_flushvolumeheader(struct hfsmount *hfsmp, int waitfor, int altflush) { - ExtendedVCB *vcb = HFSTOVCB(hfsmp); - FCB *fcb; - HFSPlusVolumeHeader *volumeHeader; - int retval; - struct buf *bp; - int i; + ExtendedVCB *vcb = HFSTOVCB(hfsmp); + struct filefork *fp; + HFSPlusVolumeHeader *volumeHeader; + int retval; + struct buf *bp; + int i; int sectorsize; - int priIDSector; + daddr64_t priIDSector; + int critical = 0; + u_int16_t signature; + u_int16_t hfsversion; - if (vcb->vcbSigWord != kHFSPlusSigWord) - return EINVAL; + 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 = (vcb->hfsPlusIOPosOffset / sectorsize) + - HFS_PRI_SECTOR(sectorsize); + priIDSector = (daddr64_t)((vcb->hfsPlusIOPosOffset / sectorsize) + + HFS_PRI_SECTOR(sectorsize)); + + if (hfs_start_transaction(hfsmp) != 0) { + return EINVAL; + } - retval = meta_bread(hfsmp->hfs_devvp, priIDSector, sectorsize, NOCRED, &bp); + retval = (int)buf_meta_bread(hfsmp->hfs_devvp, priIDSector, sectorsize, NOCRED, &bp); if (retval) { - DBG_VFS((" hfs_flushvolumeheader bread return error! (%d)\n", retval)); - if (bp) brelse(bp); - return retval; + if (bp) + buf_brelse(bp); + + hfs_end_transaction(hfsmp); + + printf("HFS: err %d reading VH blk (%s)\n", retval, vcb->vcbVN); + return (retval); } - DBG_ASSERT(bp != NULL); - DBG_ASSERT(bp->b_data != NULL); - DBG_ASSERT(bp->b_bcount == size); + if (hfsmp->jnl) { + journal_modify_block_start(hfsmp->jnl, bp); + } - volumeHeader = (HFSPlusVolumeHeader *)((char *)bp->b_data + HFS_PRI_OFFSET(sectorsize)); + volumeHeader = (HFSPlusVolumeHeader *)((char *)buf_dataptr(bp) + HFS_PRI_OFFSET(sectorsize)); + + /* + * Sanity check what we just read. + */ + 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); + } /* * For embedded HFS+ volumes, update create date if it changed * (ie from a setattrlist call) */ - if ((vcb->hfsPlusIOPosOffset != 0) && (SWAP_BE32 (volumeHeader->createDate) != vcb->localCreateDate)) - { - struct buf *bp2; + if ((vcb->hfsPlusIOPosOffset != 0) && + (SWAP_BE32 (volumeHeader->createDate) != vcb->localCreateDate)) { + struct buf *bp2; HFSMasterDirectoryBlock *mdb; - retval = meta_bread(hfsmp->hfs_devvp, HFS_PRI_SECTOR(sectorsize), sectorsize, NOCRED, &bp2); - if (retval != E_NONE) { - if (bp2) brelse(bp2); + 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 *)(bp2->b_data + HFS_PRI_OFFSET(sectorsize)); + 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); /* pick up the new create date */ - (void) VOP_BWRITE(bp2); /* write out the changes */ + if (hfsmp->jnl) { + journal_modify_block_end(hfsmp->jnl, bp2); + } else { + (void) VNOP_BWRITE(bp2); /* write out the changes */ + } } else { - brelse(bp2); /* just release it */ + buf_brelse(bp2); /* just release it */ } } - } + } + + if (1 /* hfsmp->jnl == 0 */) { + lck_mtx_lock(&hfsmp->hfs_mutex); + } - VCB_LOCK(vcb); /* Note: only update the lower 16 bits worth of attributes */ - volumeHeader->attributes = SWAP_BE32 ((SWAP_BE32 (volumeHeader->attributes) & 0xFFFF0000) + (UInt16) vcb->vcbAtrb); - volumeHeader->lastMountedVersion = SWAP_BE32 (kHFSPlusMountVersion); - volumeHeader->createDate = SWAP_BE32 (vcb->localCreateDate); /* volume create date is in local time */ - volumeHeader->modifyDate = SWAP_BE32 (vcb->vcbLsMod); - volumeHeader->backupDate = SWAP_BE32 (vcb->vcbVolBkUp); - volumeHeader->checkedDate = SWAP_BE32 (vcb->checkedDate); - volumeHeader->fileCount = SWAP_BE32 (vcb->vcbFilCnt); - volumeHeader->folderCount = SWAP_BE32 (vcb->vcbDirCnt); - 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); - - bcopy( vcb->vcbFndrInfo, volumeHeader->finderInfo, sizeof(volumeHeader->finderInfo) ); - - VCB_UNLOCK(vcb); - - fcb = VTOFCB(vcb->extentsRefNum); - /* bcopy( fcb->fcbExtents, volumeHeader->extentsFile.extents, sizeof(HFSPlusExtentRecord) ); */ - for (i = 0; i < kHFSPlusExtentDensity; i++) { - volumeHeader->extentsFile.extents[i].startBlock = SWAP_BE32 (fcb->fcbExtents[i].startBlock); - volumeHeader->extentsFile.extents[i].blockCount = SWAP_BE32 (fcb->fcbExtents[i].blockCount); - } - - fcb->fcbFlags &= ~fcbModifiedMask; - volumeHeader->extentsFile.logicalSize = SWAP_BE64 (fcb->fcbEOF); - volumeHeader->extentsFile.totalBlocks = SWAP_BE32 (fcb->fcbPLen / vcb->blockSize); - volumeHeader->extentsFile.clumpSize = SWAP_BE32 (fcb->fcbClmpSize); - - fcb = VTOFCB(vcb->catalogRefNum); - /* bcopy( fcb->fcbExtents, volumeHeader->catalogFile.extents, sizeof(HFSPlusExtentRecord) ); */ - for (i = 0; i < kHFSPlusExtentDensity; i++) { - volumeHeader->catalogFile.extents[i].startBlock = SWAP_BE32 (fcb->fcbExtents[i].startBlock); - volumeHeader->catalogFile.extents[i].blockCount = SWAP_BE32 (fcb->fcbExtents[i].blockCount); - } - - fcb->fcbFlags &= ~fcbModifiedMask; - volumeHeader->catalogFile.logicalSize = SWAP_BE64 (fcb->fcbEOF); - volumeHeader->catalogFile.totalBlocks = SWAP_BE32 (fcb->fcbPLen / vcb->blockSize); - volumeHeader->catalogFile.clumpSize = SWAP_BE32 (fcb->fcbClmpSize); - - fcb = VTOFCB(vcb->allocationsRefNum); - /* bcopy( fcb->fcbExtents, volumeHeader->allocationFile.extents, sizeof(HFSPlusExtentRecord) ); */ - for (i = 0; i < kHFSPlusExtentDensity; i++) { - volumeHeader->allocationFile.extents[i].startBlock = SWAP_BE32 (fcb->fcbExtents[i].startBlock); - volumeHeader->allocationFile.extents[i].blockCount = SWAP_BE32 (fcb->fcbExtents[i].blockCount); - } - - fcb->fcbFlags &= ~fcbModifiedMask; - volumeHeader->allocationFile.logicalSize = SWAP_BE64 (fcb->fcbEOF); - volumeHeader->allocationFile.totalBlocks = SWAP_BE32 (fcb->fcbPLen / vcb->blockSize); - volumeHeader->allocationFile.clumpSize = SWAP_BE32 (fcb->fcbClmpSize); - - if (waitfor != MNT_WAIT) - bawrite(bp); - else - retval = VOP_BWRITE(bp); - - MarkVCBClean( vcb ); + 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); /* volume create date is in local time */ + 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; + } + + /* Sync Extents over-flow file meta data */ + 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; + } + + /* Sync Catalog file meta data */ + 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; + } + + /* Sync Allocation file meta data */ + 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; + } + + /* Sync Attribute file meta data */ + 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 /* hfsmp->jnl == 0 */) { + lck_mtx_unlock(&hfsmp->hfs_mutex); + } + + /* If requested, flush out the alternate volume header */ + 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); + /* When critical data changes, flush the device cache */ + if (critical && (retval == 0)) { + (void) VNOP_IOCTL(hfsmp->hfs_devvp, DKIOCSYNCHRONIZECACHE, + NULL, FWRITE, NULL); + } + } + } + hfs_end_transaction(hfsmp); + return (retval); } /* - * Moved here to avoid having to define prototypes + * Extend a file system. + */ +__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); + + /* + * - HFS Plus file systems only. + * - Journaling must be enabled. + * - No embedded volumes. + */ + if ((vcb->vcbSigWord == kHFSSigWord) || + (hfsmp->jnl == NULL) || + (vcb->hfsPlusIOPosOffset != 0)) { + return (EPERM); + } + /* + * If extending file system by non-root, then verify + * ownership and check permissions. + */ + 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; + + /* + * Validate new size. + */ + 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); + /* + * Enclose changes inside a transaction. + */ + 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)); + + /* + * Calculate additional space required (if any) by allocation bitmap. + */ + 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; + + /* + * Add a new extent to the allocation bitmap file. + */ + 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; + /* + * Zero out the new bitmap 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; + } + /* + * Mark the new bitmap space as allocated. + */ + error = BlockMarkAllocated(vcb, vcb->totalBlocks, bitmapblks); + if (error) { + printf("hfs_extendfs: error %d setting bitmap\n", error); + goto out; + } + } + /* + * Mark the new alternate VH as allocated. + */ + 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; + } + /* + * Mark the old alternate VH as free. + */ + if (vcb->blockSize == 512) + (void) BlockMarkFree(vcb, vcb->totalBlocks - 2, 2); + else + (void) BlockMarkFree(vcb, vcb->totalBlocks - 1, 1); + /* + * Adjust file system variables for new space. + */ + 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); + /* + * Restore to old state. + */ + 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; + } + /* + * Invalidate the old alternate volume header. + */ + 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) { + /* Restore allocation fork. */ + 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) + +/* + * Truncate a file system (while still mounted). + */ +__private_extern__ +int +hfs_truncatefs(struct hfsmount *hfsmp, u_int64_t newsize, __unused vfs_context_t context) +{ + 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; + + + lck_mtx_lock(&hfsmp->hfs_mutex); + if (hfsmp->hfs_flags & HFS_RESIZE_IN_PROGRESS) { + lck_mtx_unlock(&hfsmp->hfs_mutex); + return (EALREADY); + } + hfsmp->hfs_flags |= HFS_RESIZE_IN_PROGRESS; + hfsmp->hfs_resize_filesmoved = 0; + hfsmp->hfs_resize_totalfiles = 0; + lck_mtx_unlock(&hfsmp->hfs_mutex); + + /* + * - Journaled HFS Plus volumes only. + * - No embedded volumes. + */ + if ((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; + + /* Make sure new size is valid. */ + if ((newsize < HFS_MIN_SIZE) || + (newsize >= oldsize) || + (newsize % hfsmp->hfs_phys_block_size)) { + error = EINVAL; + goto out; + } + /* Make sure there's enough space to work with. */ + if (reclaimblks >= hfs_freeblks(hfsmp, 1)) { + error = ENOSPC; + goto out; + } + /* Start with a clean journal. */ + journal_flush(hfsmp->jnl); + + if (hfs_start_transaction(hfsmp) != 0) { + error = EINVAL; + goto out; + } + transaction_begun = 1; + + /* + * Look for files that have blocks beyond newblkcnt. + */ + if (hfs_isallocated(hfsmp, newblkcnt, reclaimblks - 1)) { + /* + * hfs_reclaimspace will use separate transactions when + * relocating files (so we don't overwhelm the journal). + */ + hfs_end_transaction(hfsmp); + transaction_begun = 0; + + /* Attempt to reclaim some space. */ + if (hfs_reclaimspace(hfsmp, newblkcnt, reclaimblks) != 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; + + /* Check if we're clear now. */ + if (hfs_isallocated(hfsmp, newblkcnt, reclaimblks - 1)) { + printf("hfs_truncatefs: didn't reclaim enough space on %s\n", hfsmp->vcbVN); + error = EAGAIN; /* tell client to try again */ + goto out; + } + } + lockflags = hfs_systemfile_lock(hfsmp, SFL_EXTENTS | SFL_BITMAP, HFS_EXCLUSIVE_LOCK); + + /* + * Mark the old alternate volume header as free. + * We don't bother shrinking allocation bitmap file. + */ + if (hfsmp->blockSize == 512) + (void) BlockMarkFree(hfsmp, hfsmp->totalBlocks - 2, 2); + else + (void) BlockMarkFree(hfsmp, hfsmp->totalBlocks - 1, 1); + + /* + * Allocate last block for alternate volume header. + */ + if (hfsmp->blockSize == 512) + error = BlockMarkAllocated(hfsmp, newblkcnt - 2, 2); + else + error = BlockMarkAllocated(hfsmp, newblkcnt - 1, 1); + + if (error) { + goto out; + } + + /* + * Invalidate the existing alternate volume header. + * + * Don't do this as a transaction (don't call journal_modify_block) + * since this block will be outside of the truncated file system! + */ + 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) { + + bzero((void*)((char *)buf_dataptr(bp) + HFS_ALT_OFFSET(hfsmp->hfs_phys_block_size)), kMDBSize); + (void) VNOP_BWRITE(bp); + } else if (bp) { + buf_brelse(bp); + } + bp = NULL; + } + + /* Log successful shrinking. */ + printf("hfs_truncatefs: shrank \"%s\" to %d blocks (was %d blocks)\n", + hfsmp->vcbVN, newblkcnt, hfsmp->totalBlocks); + + /* + * Adjust file system variables and flush them to disk. + */ + 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); + journal_flush(hfsmp->jnl); + } + + lck_mtx_lock(&hfsmp->hfs_mutex); + hfsmp->hfs_flags &= ~HFS_RESIZE_IN_PROGRESS; + lck_mtx_unlock(&hfsmp->hfs_mutex); + + return (error); +} + + +/* + * Reclaim space at the end of a file system. + */ +static int +hfs_reclaimspace(struct hfsmount *hfsmp, u_long startblk, u_long reclaimblks) +{ + struct vnode *vp = NULL; + FCB *fcb; + struct BTreeIterator * iterator = NULL; + struct FSBufferDescriptor btdata; + struct HFSPlusCatalogFile filerec; + struct filefork *fp; + u_int32_t saved_next_allocation; + cnid_t * cnidbufp; + size_t cnidbufsize; + int filecnt = 0; + int maxfilecnt; + u_long block; + u_long datablks; + u_long rsrcblks; + u_long blkstomove = 0; + int lockflags; + int i; + int error; + int lastprogress = 0; + + + /* Check if Attributes file overlaps reclaim area. */ + if (hfsmp->hfs_attribute_vp) { + fp = VTOF(hfsmp->hfs_attribute_vp); + datablks = 0; + for (i = 0; i < kHFSPlusExtentDensity; ++i) { + if (fp->ff_extents[i].blockCount == 0) { + break; + } + datablks += fp->ff_extents[i].blockCount; + 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); + } + } + if ((i == kHFSPlusExtentDensity) && (fp->ff_blocks > datablks)) { + if (hfs_overlapped_overflow_extents(hfsmp, startblk, datablks, kHFSAttributesFileID, 0)) { + printf("hfs_reclaimspace: Attributes file can't move\n"); + return (EPERM); + } + } + } + /* Check if Catalog file overlaps reclaim area. */ + fp = VTOF(hfsmp->hfs_catalog_vp); + datablks = 0; + for (i = 0; i < kHFSPlusExtentDensity; ++i) { + if (fp->ff_extents[i].blockCount == 0) { + break; + } + datablks += fp->ff_extents[i].blockCount; + block = fp->ff_extents[i].startBlock + fp->ff_extents[i].blockCount; + if (block >= startblk) { + printf("hfs_reclaimspace: Catalog file can't move\n"); + return (EPERM); + } + } + if ((i == kHFSPlusExtentDensity) && (fp->ff_blocks > datablks)) { + if (hfs_overlapped_overflow_extents(hfsmp, startblk, datablks, kHFSCatalogFileID, 0)) { + printf("hfs_reclaimspace: Catalog file can't move\n"); + return (EPERM); + } + } + + /* For now move a maximum of 250,000 files. */ + maxfilecnt = MIN(hfsmp->hfs_filecount, 250000); + maxfilecnt = MIN((u_long)maxfilecnt, reclaimblks); + 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; + + /* Keep the Catalog and extents files locked during iteration. */ + lockflags = hfs_systemfile_lock(hfsmp, SFL_CATALOG | SFL_EXTENTS, HFS_SHARED_LOCK); + + error = BTIterateRecord(fcb, kBTreeFirstRecord, iterator, NULL, NULL); + if (error) { + goto end_iteration; + } + /* + * Iterate over all the catalog records looking for files + * that overlap into the space we're trying to free up. + */ + for (filecnt = 0; filecnt < maxfilecnt; ) { + error = BTIterateRecord(fcb, kBTreeNextRecord, iterator, &btdata, NULL); + if (error) { + if (error == fsBTRecordNotFoundErr || error == fsBTEndOfIterationErr) { + error = 0; + } + break; + } + if (filerec.recordType != kHFSPlusFileRecord) { + continue; + } + datablks = rsrcblks = 0; + /* + * Check if either fork overlaps target space. + */ + for (i = 0; i < kHFSPlusExtentDensity; ++i) { + if (filerec.dataFork.extents[i].blockCount != 0) { + datablks += filerec.dataFork.extents[i].blockCount; + block = filerec.dataFork.extents[i].startBlock + + filerec.dataFork.extents[i].blockCount; + if (block >= startblk) { + if ((filerec.fileID == hfsmp->hfs_jnlfileid) || + (filerec.fileID == hfsmp->hfs_jnlinfoblkid)) { + printf("hfs_reclaimspace: cannot move active journal\n"); + error = EPERM; + goto end_iteration; + } + cnidbufp[filecnt++] = filerec.fileID; + blkstomove += filerec.dataFork.totalBlocks; + break; + } + } + if (filerec.resourceFork.extents[i].blockCount != 0) { + rsrcblks += filerec.resourceFork.extents[i].blockCount; + block = filerec.resourceFork.extents[i].startBlock + + filerec.resourceFork.extents[i].blockCount; + if (block >= startblk) { + cnidbufp[filecnt++] = filerec.fileID; + blkstomove += filerec.resourceFork.totalBlocks; + break; + } + } + } + /* + * Check for any overflow extents that overlap. + */ + if (i == kHFSPlusExtentDensity) { + if (filerec.dataFork.totalBlocks > datablks) { + if (hfs_overlapped_overflow_extents(hfsmp, startblk, datablks, filerec.fileID, 0)) { + cnidbufp[filecnt++] = filerec.fileID; + blkstomove += filerec.dataFork.totalBlocks; + } + } else if (filerec.resourceFork.totalBlocks > rsrcblks) { + if (hfs_overlapped_overflow_extents(hfsmp, startblk, rsrcblks, filerec.fileID, 1)) { + cnidbufp[filecnt++] = filerec.fileID; + blkstomove += filerec.resourceFork.totalBlocks; + } + } + } + } + +end_iteration: + if (filecnt == 0) { + error = ENOSPC; + } + /* All done with catalog. */ + hfs_systemfile_unlock(hfsmp, lockflags); + if (error) + goto out; + + /* + * Double check space requirements to make sure + * there is enough space to relocate any files + * that reside in the reclaim area. + * + * Blocks To Move -------------- + * | | | + * V V V + * ------------------------------------------------------------------------ + * | | / /// // | + * | | / /// // | + * | | / /// // | + * ------------------------------------------------------------------------ + * + * <------------------- New Total Blocks ------------------><-- Reclaim --> + * + * <------------------------ Original Total Blocks -----------------------> + * + */ + if ((reclaimblks + blkstomove) >= hfs_freeblks(hfsmp, 1)) { + error = ENOSPC; + goto out; + } + hfsmp->hfs_resize_filesmoved = 0; + hfsmp->hfs_resize_totalfiles = filecnt; + + /* Now move any files that are in the way. */ + for (i = 0; i < filecnt; ++i) { + struct vnode * rvp; + + if (hfs_vget(hfsmp, cnidbufp[i], &vp, 0) != 0) + continue; + + /* Relocate any data fork blocks. */ + if (VTOF(vp)->ff_blocks > 0) { + error = hfs_relocate(vp, hfsmp->hfs_metazone_end + 1, kauth_cred_get(), current_proc()); + } + if (error) + break; + + /* Relocate any resource fork blocks. */ + 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; + + ++hfsmp->hfs_resize_filesmoved; + + /* Report intermediate progress. */ + if (filecnt > 100) { + int progress; + + progress = (i * 100) / filecnt; + if (progress > (lastprogress + 9)) { + printf("hfs_reclaimspace: %d%% done...\n", progress); + lastprogress = progress; + } + } + } + if (vp) { + hfs_unlock(VTOC(vp)); + vnode_put(vp); + vp = NULL; + } + if (hfsmp->hfs_resize_filesmoved != 0) { + printf("hfs_reclaimspace: relocated %d files on \"%s\"\n", + (int)hfsmp->hfs_resize_filesmoved, hfsmp->vcbVN); + } +out: + kmem_free(kernel_map, (vm_offset_t)iterator, sizeof(*iterator)); + kmem_free(kernel_map, (vm_offset_t)cnidbufp, cnidbufsize); + + /* + * Restore the roving allocation pointer on errors. + * (but only if we didn't move any files) + */ + if (error && hfsmp->hfs_resize_filesmoved == 0) { + hfsmp->nextAllocation = saved_next_allocation; + } + return (error); +} + + +/* + * Check if there are any overflow extents that overlap. + */ +static int +hfs_overlapped_overflow_extents(struct hfsmount *hfsmp, u_int32_t startblk, u_int32_t catblks, u_int32_t fileID, int rsrcfork) +{ + struct BTreeIterator * iterator = NULL; + struct FSBufferDescriptor btdata; + HFSPlusExtentRecord extrec; + HFSPlusExtentKey *extkeyptr; + FCB *fcb; + u_int32_t block; + u_int8_t forktype; + int overlapped = 0; + int i; + int error; + + forktype = rsrcfork ? 0xFF : 0; + if (kmem_alloc(kernel_map, (vm_offset_t *)&iterator, sizeof(*iterator))) { + return (0); + } + bzero(iterator, sizeof(*iterator)); + extkeyptr = (HFSPlusExtentKey *)&iterator->key; + extkeyptr->keyLength = kHFSPlusExtentKeyMaximumLength; + extkeyptr->forkType = forktype; + extkeyptr->fileID = fileID; + extkeyptr->startBlock = catblks; + + btdata.bufferAddress = &extrec; + btdata.itemSize = sizeof(extrec); + btdata.itemCount = 1; + + fcb = VTOF(hfsmp->hfs_extents_vp); + + error = BTSearchRecord(fcb, iterator, &btdata, NULL, iterator); + while (error == 0) { + /* Stop when we encounter a different file. */ + if ((extkeyptr->fileID != fileID) || + (extkeyptr->forkType != forktype)) { + break; + } + /* + * Check if the file overlaps target space. + */ + for (i = 0; i < kHFSPlusExtentDensity; ++i) { + if (extrec[i].blockCount == 0) { + break; + } + block = extrec[i].startBlock + extrec[i].blockCount; + if (block >= startblk) { + overlapped = 1; + break; + } + } + /* Look for more records. */ + error = BTIterateRecord(fcb, kBTreeNextRecord, iterator, &btdata, NULL); + } + + kmem_free(kernel_map, (vm_offset_t)iterator, sizeof(*iterator)); + return (overlapped); +} + + +/* + * Calculate the progress of a file system resize operation. + */ +__private_extern__ +int +hfs_resize_progress(struct hfsmount *hfsmp, u_int32_t *progress) +{ + if ((hfsmp->hfs_flags & HFS_RESIZE_IN_PROGRESS) == 0) { + return (ENXIO); + } + + if (hfsmp->hfs_resize_totalfiles > 0) + *progress = (hfsmp->hfs_resize_filesmoved * 100) / hfsmp->hfs_resize_totalfiles; + else + *progress = 0; + + return (0); +} + + +/* + * Get file system attributes. + */ +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); + /* XXX needs clarification */ + VFSATTR_RETURN(fsap, f_bused, hfsmp->totalBlocks - hfs_freeblks(hfsmp, 1)); + /* Maximum files is constrained by total blocks. */ + 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; + + /* + * Subtypes (flavors) for HFS + * 0: Mac OS Extended + * 1: Mac OS Extended (Journaled) + * 2: Mac OS Extended (Case Sensitive) + * 3: Mac OS Extended (Case Sensitive, Journaled) + * 4 - 127: Reserved + * 128: Mac OS Standard + * + */ + if (hfsmp->hfs_flags & HFS_STANDARD) { + subtype = HFS_SUBTYPE_STANDARDHFS; + } else /* HFS Plus */ { + 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); +} + +/* + * Perform a volume rename. Requires the FS' root vp. */ +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; + + /* + * Ignore attempts to rename a volume to a zero-length name. + */ + 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 successful, update the name in the VCB, ensure it's terminated. + */ + 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) { + /* Release old allocated name buffer */ + 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); + } + /* Update cnode's catalog descriptor */ + replace_desc(cp, &new_desc); + vcb->volumeNameEncodingHint = new_desc.cd_encoding; + cp->c_touch_chgtime = TRUE; + } + + hfs_unlock(cp); + } + + return(error); +} + +/* + * Get file system attributes. + */ +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; + + /* + * Must be superuser or owner of filesystem to change volume attributes + */ + 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; +} + /* * hfs vfs operations. */ struct vfsops hfs_vfsops = { - hfs_mount, - hfs_start, - hfs_unmount, - hfs_root, - hfs_quotactl, - hfs_statfs, - hfs_sync, - hfs_vget, - hfs_fhtovp, - hfs_vptofh, - hfs_init, - hfs_sysctl + hfs_mount, + hfs_start, + hfs_unmount, + hfs_vfs_root, + hfs_quotactl, + hfs_vfs_getattr, /* was hfs_statfs */ + hfs_sync, + hfs_vfs_vget, + hfs_fhtovp, + hfs_vptofh, + hfs_init, + hfs_sysctl, + hfs_vfs_setattr };