/*
- * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2008 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#include <sys/systm.h>
#include <sys/kernel.h>
+#include <sys/param.h>
#include <sys/file_internal.h>
#include <sys/dirent.h>
#include <sys/stat.h>
#include <sys/buf.h>
#include <sys/mount.h>
+#include <sys/vnode_if.h>
#include <sys/vnode_internal.h>
#include <sys/malloc.h>
#include <sys/ubc.h>
+#include <sys/ubc_internal.h>
#include <sys/paths.h>
#include <sys/quota.h>
#include <sys/time.h>
#include <machine/spl.h>
#include <sys/kdebug.h>
+#include <sys/sysctl.h>
#include "hfs.h"
#include "hfs_catalog.h"
#include "hfscommon/headers/BTreesInternal.h"
#include "hfscommon/headers/FileMgrInternal.h"
-#define MAKE_DELETED_NAME(NAME,FID) \
- (void) sprintf((NAME), "%s%d", HFS_DELETE_PREFIX, (FID))
#define KNDETACH_VNLOCKED 0x00000001
/* Global vfs data structures for hfs */
-
-extern unsigned long strtoul(const char *, char **, int);
+/* Always F_FULLFSYNC? 1=yes,0=no (default due to "various" reasons is 'no') */
+int always_do_fullfsync = 0;
+SYSCTL_INT (_kern, OID_AUTO, always_do_fullfsync, CTLFLAG_RW, &always_do_fullfsync, 0, "always F_FULLFSYNC when fsync is called");
static int hfs_makenode(struct vnode *dvp, struct vnode **vpp,
struct componentname *cnp, struct vnode_attr *vap,
vfs_context_t ctx);
-static int hfs_metasync(struct hfsmount *hfsmp, daddr64_t node, struct proc *p);
+static int hfs_metasync(struct hfsmount *hfsmp, daddr64_t node, __unused struct proc *p);
+static int hfs_metasync_all(struct hfsmount *hfsmp);
static int hfs_removedir(struct vnode *, struct vnode *, struct componentname *,
int);
static int hfs_removefile(struct vnode *, struct vnode *, struct componentname *,
- int, int);
+ int, int, int);
+
+#if FIFO
+static int hfsfifo_read(struct vnop_read_args *);
+static int hfsfifo_write(struct vnop_write_args *);
+static int hfsfifo_close(struct vnop_close_args *);
+static int hfsfifo_kqfilt_add(struct vnop_kqfilt_add_args *);
+static int hfsfifo_kqfilt_remove(struct vnop_kqfilt_remove_args *);
+
+extern int (**fifo_vnodeop_p)(void *);
+#endif /* FIFO */
static int hfs_vnop_close(struct vnop_close_args*);
static int hfs_vnop_create(struct vnop_create_args*);
static int hfs_vnop_rmdir(struct vnop_rmdir_args*);
static int hfs_vnop_symlink(struct vnop_symlink_args*);
static int hfs_vnop_setattr(struct vnop_setattr_args*);
+static int hfs_vnop_readlink(struct vnop_readlink_args *);
+static int hfs_vnop_pathconf(struct vnop_pathconf_args *);
+static int hfs_vnop_kqfiltremove(struct vnop_kqfilt_remove_args *);
+static int hfs_vnop_whiteout(struct vnop_whiteout_args *);
+static int hfsspec_read(struct vnop_read_args *);
+static int hfsspec_write(struct vnop_write_args *);
+static int hfsspec_close(struct vnop_close_args *);
/* Options for hfs_removedir and hfs_removefile */
#define HFSRM_SKIP_RESERVE 0x01
-int hfs_write_access(struct vnode *vp, kauth_cred_t cred, struct proc *p, Boolean considerFlags);
-int hfs_chflags(struct vnode *vp, uint32_t flags, kauth_cred_t cred,
- struct proc *p);
-int hfs_chmod(struct vnode *vp, int mode, kauth_cred_t cred,
- struct proc *p);
-int hfs_chown(struct vnode *vp, uid_t uid, gid_t gid,
- kauth_cred_t cred, struct proc *p);
/*****************************************************************************
*
static int
hfs_vnop_create(struct vnop_create_args *ap)
{
- return hfs_makenode(ap->a_dvp, ap->a_vpp, ap->a_cnp, ap->a_vap, ap->a_context);
+ int error;
+
+again:
+ error = hfs_makenode(ap->a_dvp, ap->a_vpp, ap->a_cnp, ap->a_vap, ap->a_context);
+
+ /*
+ * We speculatively skipped the original lookup of the leaf
+ * for CREATE. Since it exists, go get it as long as they
+ * didn't want an exclusive create.
+ */
+ if ((error == EEXIST) && !(ap->a_vap->va_vaflags & VA_EXCLUSIVE)) {
+ struct vnop_lookup_args args;
+
+ args.a_desc = &vnop_lookup_desc;
+ args.a_dvp = ap->a_dvp;
+ args.a_vpp = ap->a_vpp;
+ args.a_cnp = ap->a_cnp;
+ args.a_context = ap->a_context;
+ args.a_cnp->cn_nameiop = LOOKUP;
+ error = hfs_vnop_lookup(&args);
+ /*
+ * We can also race with remove for this file.
+ */
+ if (error == ENOENT) {
+ goto again;
+ }
+
+ /* Make sure it was file. */
+ if ((error == 0) && !vnode_isreg(*args.a_vpp)) {
+ vnode_put(*args.a_vpp);
+ error = EEXIST;
+ }
+ args.a_cnp->cn_nameiop = CREATE;
+ }
+ return (error);
}
/*
*/
if ((VTOHFS(vp)->hfs_flags & HFS_READ_ONLY) ||
(VTOHFS(vp)->jnl == NULL) ||
+#if NAMEDSTREAMS
+ !vnode_isreg(vp) || vnode_isinuse(vp, 0) || vnode_isnamedstream(vp)) {
+#else
!vnode_isreg(vp) || vnode_isinuse(vp, 0)) {
+#endif
return (0);
}
if (fp->ff_blocks &&
fp->ff_extents[7].blockCount != 0 &&
fp->ff_size <= (20 * 1024 * 1024)) {
+ struct timeval now;
+ struct cnode *cp = VTOC(vp);
/*
* Wait until system bootup is done (3 min).
+ * And don't relocate a file that's been modified
+ * within the past minute -- this can lead to
+ * system thrashing.
*/
microuptime(&tv);
- if (tv.tv_sec > (60 * 3)) {
+ microtime(&now);
+ if (tv.tv_sec > (60 * 3) &&
+ ((now.tv_sec - cp->c_mtime) > 60)) {
(void) hfs_relocate(vp, VTOVCB(vp)->nextAllocation + 4096,
vfs_context_ucred(ap->a_context),
vfs_context_proc(ap->a_context));
struct proc *p = vfs_context_proc(ap->a_context);
struct hfsmount *hfsmp;
int busy;
+ int knownrefs = 0;
+ int tooktrunclock = 0;
if ( hfs_lock(VTOC(vp), HFS_EXCLUSIVE_LOCK) != 0)
return (0);
cp = VTOC(vp);
hfsmp = VTOHFS(vp);
+ /*
+ * If the rsrc fork is a named stream, it holds a usecount on
+ * the data fork, which prevents the data fork from getting recycled, which
+ * then prevents the de-allocation of its extra blocks.
+ * Do checks for truncation on close. Purge extra extents if they
+ * exist. Make sure the vp is not a directory, that it has a resource
+ * fork, and that rsrc fork is a named stream.
+ */
+
+ if ((vp->v_type == VREG) && (cp->c_rsrc_vp)
+ && (vnode_isnamedstream(cp->c_rsrc_vp))) {
+ uint32_t blks;
+
+ blks = howmany(VTOF(vp)->ff_size, VTOVCB(vp)->blockSize);
+ /*
+ * If there are any extra blocks and there are only 2 refs on
+ * this vp (ourselves + rsrc fork holding ref on us), go ahead
+ * and try to truncate the extra blocks away.
+ */
+ if ((blks < VTOF(vp)->ff_blocks) && (!vnode_isinuse(vp, 2))) {
+ // release cnode lock ; must acquire truncate lock BEFORE cnode lock
+ hfs_unlock (cp);
+
+ hfs_lock_truncate(cp, TRUE);
+ tooktrunclock = 1;
+
+ if (hfs_lock(VTOC(vp), HFS_EXCLUSIVE_LOCK) != 0) {
+ hfs_unlock_truncate(cp, TRUE);
+ return (0);
+ }
+
+ //now re-test to make sure it's still valid.
+ if (cp->c_rsrc_vp) {
+ knownrefs = 1 + vnode_isnamedstream(cp->c_rsrc_vp);
+ if (!vnode_isinuse(vp, knownrefs)) {
+ blks = howmany(VTOF(vp)->ff_size, VTOVCB(vp)->blockSize);
+ if (blks < VTOF(vp)->ff_blocks) {
+ (void) hfs_truncate(vp, VTOF(vp)->ff_size, IO_NDELAY, 0, ap->a_context);
+ }
+ }
+ }
+ }
+ }
+
// if we froze the fs and we're exiting, then "thaw" the fs
if (hfsmp->hfs_freezing_proc == p && proc_exiting(p)) {
hfsmp->hfs_freezing_proc = NULL;
hfs_global_exclusive_lock_release(hfsmp);
+ lck_rw_unlock_exclusive(&hfsmp->hfs_insync);
}
busy = vnode_isinuse(vp, 1);
} else if (vnode_issystem(vp) && !busy) {
vnode_recycle(vp);
}
-
+ if (tooktrunclock) {
+ hfs_unlock_truncate(cp, TRUE);
+ }
+
hfs_unlock(cp);
+
+ if (ap->a_fflag & FWASWRITTEN) {
+ hfs_sync_ejectable(hfsmp);
+ }
+
return (0);
}
static int
hfs_vnop_getattr(struct vnop_getattr_args *ap)
{
+#define VNODE_ATTR_TIMES \
+ (VNODE_ATTR_va_access_time|VNODE_ATTR_va_change_time|VNODE_ATTR_va_modify_time)
+#define VNODE_ATTR_AUTH \
+ (VNODE_ATTR_va_mode | VNODE_ATTR_va_uid | VNODE_ATTR_va_gid | \
+ VNODE_ATTR_va_flags | VNODE_ATTR_va_acl)
+
struct vnode *vp = ap->a_vp;
struct vnode_attr *vap = ap->a_vap;
- struct vnode *rvp = NULL;
+ struct vnode *rvp = NULLVP;
struct hfsmount *hfsmp;
struct cnode *cp;
+ uint64_t data_size;
enum vtype v_type;
int error = 0;
- if ((error = hfs_lock(VTOC(vp), HFS_SHARED_LOCK))) {
- return (error);
- }
cp = VTOC(vp);
+
+ /*
+ * Shortcut for vnode_authorize path. Each of the attributes
+ * in this set is updated atomically so we don't need to take
+ * the cnode lock to access them.
+ */
+ if ((vap->va_active & ~VNODE_ATTR_AUTH) == 0) {
+ /* Make sure file still exists. */
+ if (cp->c_flag & C_NOEXISTS)
+ return (ENOENT);
+
+ vap->va_uid = cp->c_uid;
+ vap->va_gid = cp->c_gid;
+ vap->va_mode = cp->c_mode;
+ vap->va_flags = cp->c_flags;
+ vap->va_supported |= VNODE_ATTR_AUTH & ~VNODE_ATTR_va_acl;
+
+ if ((cp->c_attr.ca_recflags & kHFSHasSecurityMask) == 0) {
+ vap->va_acl = (kauth_acl_t) KAUTH_FILESEC_NONE;
+ VATTR_SET_SUPPORTED(vap, va_acl);
+ }
+ return (0);
+ }
hfsmp = VTOHFS(vp);
- hfs_touchtimes(hfsmp, cp);
v_type = vnode_vtype(vp);
- VATTR_RETURN(vap, va_rdev, (v_type == VBLK || v_type == VCHR) ? cp->c_rdev : 0);
+ /*
+ * If time attributes are requested and we have cnode times
+ * that require updating, then acquire an exclusive lock on
+ * the cnode before updating the times. Otherwise we can
+ * just acquire a shared lock.
+ */
+ if ((vap->va_active & VNODE_ATTR_TIMES) &&
+ (cp->c_touch_acctime || cp->c_touch_chgtime || cp->c_touch_modtime)) {
+ if ((error = hfs_lock(cp, HFS_EXCLUSIVE_LOCK)))
+ return (error);
+ hfs_touchtimes(hfsmp, cp);
+ } else {
+ if ((error = hfs_lock(cp, HFS_SHARED_LOCK)))
+ return (error);
+ }
+
if (v_type == VDIR) {
+ data_size = (cp->c_entries + 2) * AVERAGE_HFSDIRENTRY_SIZE;
+
if (VATTR_IS_ACTIVE(vap, va_nlink)) {
- int entries;
+ int nlink;
- entries = cp->c_nlink;
- if (vnode_isvroot(vp)) {
- if (hfsmp->hfs_privdir_desc.cd_cnid != 0)
- --entries; /* hide private dir */
- if (hfsmp->jnl)
- entries -= 2; /* hide the journal files */
+ /*
+ * For directories, the va_nlink is esentially a count
+ * of the ".." references to a directory plus the "."
+ * reference and the directory itself. So for HFS+ this
+ * becomes the sub-directory count plus two.
+ *
+ * In the absence of a sub-directory count we use the
+ * directory's item count. This will be too high in
+ * most cases since it also includes files.
+ */
+ if ((hfsmp->hfs_flags & HFS_FOLDERCOUNT) &&
+ (cp->c_attr.ca_recflags & kHFSHasFolderCountMask))
+ nlink = cp->c_attr.ca_dircount; /* implied ".." entries */
+ else
+ nlink = cp->c_entries;
+
+ /* Account for ourself and our "." entry */
+ nlink += 2;
+ /* Hide our private directories. */
+ if (cp->c_cnid == kHFSRootFolderID) {
+ if (hfsmp->hfs_private_desc[FILE_HARDLINKS].cd_cnid != 0) {
+ --nlink;
+ }
+ if (hfsmp->hfs_private_desc[DIR_HARDLINKS].cd_cnid != 0) {
+ --nlink;
+ }
}
- VATTR_RETURN(vap, va_nlink, (uint64_t)entries);
- }
-
+ VATTR_RETURN(vap, va_nlink, (u_int64_t)nlink);
+ }
if (VATTR_IS_ACTIVE(vap, va_nchildren)) {
int entries;
entries = cp->c_entries;
- if (vnode_isvroot(vp)) {
- if (hfsmp->hfs_privdir_desc.cd_cnid != 0)
- --entries; /* hide private dir */
- if (hfsmp->jnl)
- entries -= 2; /* hide the journal files */
+ /* Hide our private files and directories. */
+ if (cp->c_cnid == kHFSRootFolderID) {
+ if (hfsmp->hfs_private_desc[FILE_HARDLINKS].cd_cnid != 0)
+ --entries;
+ if (hfsmp->hfs_private_desc[DIR_HARDLINKS].cd_cnid != 0)
+ --entries;
+ if (hfsmp->jnl || ((hfsmp->vcbAtrb & kHFSVolumeJournaledMask) && (hfsmp->hfs_flags & HFS_READ_ONLY)))
+ entries -= 2; /* hide the journal files */
}
VATTR_RETURN(vap, va_nchildren, entries);
}
- } else {
- VATTR_RETURN(vap, va_nlink, (uint64_t)cp->c_nlink);
+ /*
+ * The va_dirlinkcount is the count of real directory hard links.
+ * (i.e. its not the sum of the implied "." and ".." references)
+ */
+ if (VATTR_IS_ACTIVE(vap, va_dirlinkcount)) {
+ VATTR_RETURN(vap, va_dirlinkcount, (uint32_t)cp->c_linkcount);
+ }
+ } else /* !VDIR */ {
+ data_size = VCTOF(vp, cp)->ff_size;
+
+ VATTR_RETURN(vap, va_nlink, (u_int64_t)cp->c_linkcount);
+ if (VATTR_IS_ACTIVE(vap, va_data_alloc)) {
+ u_int64_t blocks;
+
+ blocks = VCTOF(vp, cp)->ff_blocks;
+ VATTR_RETURN(vap, va_data_alloc, blocks * (u_int64_t)hfsmp->blockSize);
+ }
}
/* conditional because 64-bit arithmetic can be expensive */
if (VATTR_IS_ACTIVE(vap, va_total_size)) {
if (v_type == VDIR) {
- VATTR_RETURN(vap, va_total_size, cp->c_nlink * AVERAGE_HFSDIRENTRY_SIZE);
+ VATTR_RETURN(vap, va_total_size, (cp->c_entries + 2) * AVERAGE_HFSDIRENTRY_SIZE);
} else {
- uint64_t total_size = 0;
+ u_int64_t total_size = 0;
struct cnode *rcp;
if (cp->c_datafork) {
}
if (cp->c_blocks - VTOF(vp)->ff_blocks) {
- /* hfs_vgetrsrc does not use struct proc - therefore passing NULL */
- error = hfs_vgetrsrc(hfsmp, vp, &rvp, NULL);
+ /* We deal with resource fork vnode iocount at the end of the function */
+ error = hfs_vgetrsrc(hfsmp, vp, &rvp, TRUE);
if (error) {
goto out;
}
-
rcp = VTOC(rvp);
if (rcp && rcp->c_rsrcfork) {
total_size += rcp->c_rsrcfork->ff_size;
}
VATTR_RETURN(vap, va_total_size, total_size);
- /* Include size of attibute data (extents), if any */
- if (cp->c_attrblks) {
- vap->va_total_size += (uint64_t)cp->c_attrblks * (uint64_t)hfsmp->blockSize;
- }
}
}
if (VATTR_IS_ACTIVE(vap, va_total_alloc)) {
if (v_type == VDIR) {
VATTR_RETURN(vap, va_total_alloc, 0);
} else {
- VATTR_RETURN(vap, va_total_alloc, (uint64_t)cp->c_blocks * (uint64_t)hfsmp->blockSize);
- /* Include size of attibute data (extents), if any */
- if (cp->c_attrblks) {
- vap->va_total_alloc += (uint64_t)cp->c_attrblks * (uint64_t)hfsmp->blockSize;
- }
+ VATTR_RETURN(vap, va_total_alloc, (u_int64_t)cp->c_blocks * (u_int64_t)hfsmp->blockSize);
}
}
- /* XXX broken... if ask for "data size" of rsrc fork vp you get rsrc fork size! */
- if (v_type == VDIR) {
- VATTR_RETURN(vap, va_data_size, cp->c_nlink * AVERAGE_HFSDIRENTRY_SIZE);
- } else {
- VATTR_RETURN(vap, va_data_size, VTOF(vp)->ff_size);
- }
- if (VATTR_IS_ACTIVE(vap, va_data_alloc) && (v_type != VDIR)) {
- /* XXX do we need to account for ff_unallocblocks ? */
- VATTR_RETURN(vap, va_data_alloc, (uint64_t)VTOF(vp)->ff_blocks * (uint64_t)hfsmp->blockSize);
- }
- /* XXX is this really a good 'optimal I/O size'? */
- VATTR_RETURN(vap, va_iosize, hfsmp->hfs_logBlockSize);
- VATTR_RETURN(vap, va_uid, cp->c_uid);
- VATTR_RETURN(vap, va_gid, cp->c_gid);
- VATTR_RETURN(vap, va_mode, cp->c_mode);
-#if 0
- /* XXX is S_IFXATTR still needed ??? */
- if (VNODE_IS_RSRC(vp))
- vap->va_mode |= S_IFXATTR;
-#endif
- VATTR_RETURN(vap, va_flags, cp->c_flags);
/*
* If the VFS wants extended security data, and we know that we
*/
if (VATTR_IS_ACTIVE(vap, va_acl)) {
if ((cp->c_attr.ca_recflags & kHFSHasSecurityMask) == 0) {
- vap->va_acl = KAUTH_FILESEC_NONE;
+ vap->va_acl = (kauth_acl_t) KAUTH_FILESEC_NONE;
VATTR_SET_SUPPORTED(vap, va_acl);
}
}
- vap->va_create_time.tv_sec = cp->c_itime;
- vap->va_create_time.tv_nsec = 0;
- VATTR_SET_SUPPORTED(vap, va_create_time);
-
if (VATTR_IS_ACTIVE(vap, va_access_time)) {
- /* Access times are lazyily updated, get current time if needed */
+ /* Access times are lazily updated, get current time if needed */
if (cp->c_touch_acctime) {
struct timeval tv;
vap->va_access_time.tv_nsec = 0;
VATTR_SET_SUPPORTED(vap, va_access_time);
}
+ vap->va_create_time.tv_sec = cp->c_itime;
+ vap->va_create_time.tv_nsec = 0;
vap->va_modify_time.tv_sec = cp->c_mtime;
vap->va_modify_time.tv_nsec = 0;
- VATTR_SET_SUPPORTED(vap, va_modify_time);
vap->va_change_time.tv_sec = cp->c_ctime;
vap->va_change_time.tv_nsec = 0;
- VATTR_SET_SUPPORTED(vap, va_change_time);
vap->va_backup_time.tv_sec = cp->c_btime;
- vap->va_backup_time.tv_nsec = 0;
- VATTR_SET_SUPPORTED(vap, va_backup_time);
+ vap->va_backup_time.tv_nsec = 0;
+
+ /* XXX is this really a good 'optimal I/O size'? */
+ vap->va_iosize = hfsmp->hfs_logBlockSize;
+ vap->va_uid = cp->c_uid;
+ vap->va_gid = cp->c_gid;
+ vap->va_mode = cp->c_mode;
+ vap->va_flags = cp->c_flags;
/*
* Exporting file IDs from HFS Plus:
* The stat call (getattr) uses va_fileid and the Carbon APIs,
* which are hardlink-ignorant, will ask for va_linkid.
*/
- VATTR_RETURN(vap, va_fileid, (uint64_t)cp->c_fileid);
- VATTR_RETURN(vap, va_linkid, (uint64_t)cp->c_cnid);
- VATTR_RETURN(vap, va_parentid, (uint64_t)cp->c_parentcnid);
- VATTR_RETURN(vap, va_fsid, cp->c_dev);
- VATTR_RETURN(vap, va_filerev, 0);
-
- VATTR_RETURN(vap, va_encoding, cp->c_encoding);
-
- /* if this is the root, let VFS to find out the mount name, which may be different from the real name */
- if (VATTR_IS_ACTIVE(vap, va_name) && !vnode_isvroot(vp)) {
- /* Return the name for ATTR_CMN_NAME */
- if (cp->c_desc.cd_namelen == 0) {
- error = ENOENT;
- goto out;
+ vap->va_fileid = (u_int64_t)cp->c_fileid;
+ /*
+ * We need to use the origin cache for both hardlinked files
+ * and directories. Hardlinked directories have multiple cnids
+ * and parents (one per link). Hardlinked files also have their
+ * own parents and link IDs separate from the indirect inode number.
+ * If we don't use the cache, we could end up vending the wrong ID
+ * because the cnode will only reflect the link that was looked up most recently.
+ */
+ if (cp->c_flag & C_HARDLINK) {
+ vap->va_linkid = (u_int64_t)hfs_currentcnid(cp);
+ vap->va_parentid = (u_int64_t)hfs_currentparent(cp);
+ } else {
+ vap->va_linkid = (u_int64_t)cp->c_cnid;
+ vap->va_parentid = (u_int64_t)cp->c_parentcnid;
+ }
+ vap->va_fsid = cp->c_dev;
+ vap->va_filerev = 0;
+ vap->va_encoding = cp->c_encoding;
+ vap->va_rdev = (v_type == VBLK || v_type == VCHR) ? cp->c_rdev : 0;
+ vap->va_data_size = data_size;
+
+ /* Mark them all at once instead of individual VATTR_SET_SUPPORTED calls. */
+ vap->va_supported |= VNODE_ATTR_va_create_time | VNODE_ATTR_va_modify_time |
+ VNODE_ATTR_va_change_time| VNODE_ATTR_va_backup_time |
+ VNODE_ATTR_va_iosize | VNODE_ATTR_va_uid |
+ VNODE_ATTR_va_gid | VNODE_ATTR_va_mode |
+ VNODE_ATTR_va_flags |VNODE_ATTR_va_fileid |
+ VNODE_ATTR_va_linkid | VNODE_ATTR_va_parentid |
+ VNODE_ATTR_va_fsid | VNODE_ATTR_va_filerev |
+ VNODE_ATTR_va_encoding | VNODE_ATTR_va_rdev |
+ VNODE_ATTR_va_data_size;
+
+ /* If this is the root, let VFS to find out the mount name, which may be different from the real name.
+ * Otherwise, we need to just take care for hardlinked files, which need to be looked up, if necessary
+ */
+ if (VATTR_IS_ACTIVE(vap, va_name) && (cp->c_cnid != kHFSRootFolderID)) {
+ struct cat_desc linkdesc;
+ int lockflags;
+ int uselinkdesc = 0;
+ cnid_t nextlinkid = 0;
+ cnid_t prevlinkid = 0;
+
+ /* Get the name for ATTR_CMN_NAME. We need to take special care for hardlinks
+ * here because the info. for the link ID requested by getattrlist may be
+ * different than what's currently in the cnode. This is because the cnode
+ * will be filled in with the information for the most recent link ID that went
+ * through namei/lookup(). If there are competing lookups for hardlinks that point
+ * to the same inode, one (or more) getattrlists could be vended incorrect name information.
+ * Also, we need to beware of open-unlinked files which could have a namelen of 0. Note
+ * that if another hardlink sibling of this file is being unlinked, that could also thrash
+ * the name fields but it should *not* be treated like an open-unlinked file here.
+ */
+ if ((cp->c_flag & C_HARDLINK) &&
+ ((cp->c_desc.cd_namelen == 0) || (vap->va_linkid != cp->c_cnid))) {
+ /* If we have no name and our linkID is the raw inode number, then we may
+ * have an open-unlinked file. Go to the next link in this case.
+ */
+ if ((cp->c_desc.cd_namelen == 0) && (vap->va_linkid == cp->c_fileid)) {
+ if ((error = hfs_lookuplink(hfsmp, vap->va_linkid, &prevlinkid, &nextlinkid))) {
+ goto out;
+ }
+ }
+ else {
+ nextlinkid = vap->va_linkid;
+ }
+ /* Now probe the catalog for the linkID. Note that we don't know if we have
+ * the exclusive lock here for the cnode, so we can't just update the descriptor.
+ * Instead, we should just store the descriptor's value locally and then use it to pass
+ * out the name value as needed below.
+ */
+ if (nextlinkid) {
+ lockflags = hfs_systemfile_lock(hfsmp, SFL_CATALOG, HFS_SHARED_LOCK);
+ error = cat_findname(hfsmp, nextlinkid, &linkdesc);
+ hfs_systemfile_unlock(hfsmp, lockflags);
+ if (error == 0) {
+ uselinkdesc = 1;
+ }
+ }
}
- strncpy(vap->va_name, cp->c_desc.cd_nameptr, MAXPATHLEN);
- vap->va_name[MAXPATHLEN-1] = '\0';
- VATTR_SET_SUPPORTED(vap, va_name);
+ /* By this point, we either patched the name above, and the c_desc points
+ * to correct data, or it already did, in which case we just proceed by copying
+ * the name into the VAP. Note that we will never set va_name to supported if
+ * nextlinkid is never initialized. This could happen in the degenerate case above
+ * involving the raw inode number, where it has no nextlinkid. In this case, we will
+ * simply not export the name as supported.
+ */
+ if (uselinkdesc) {
+ strlcpy(vap->va_name, (const char *)linkdesc.cd_nameptr, MAXPATHLEN);
+ VATTR_SET_SUPPORTED(vap, va_name);
+ cat_releasedesc(&linkdesc);
+ }
+ else if (cp->c_desc.cd_namelen) {
+ strlcpy(vap->va_name, (const char *)cp->c_desc.cd_nameptr, MAXPATHLEN);
+ VATTR_SET_SUPPORTED(vap, va_name);
+ }
}
out:
hfs_unlock(cp);
+ /*
+ * We need to drop the iocount on the rsrc fork vnode only *after* we've
+ * released the cnode lock, since vnode_put can trigger an inactive call, which
+ * will go back into the HFS and try to acquire a cnode lock.
+ */
if (rvp) {
vnode_put(rvp);
}
/* Take truncate lock before taking cnode lock. */
hfs_lock_truncate(VTOC(vp), TRUE);
+
+ /* Perform the ubc_setsize before taking the cnode lock. */
+ ubc_setsize(vp, vap->va_data_size);
+
if ((error = hfs_lock(VTOC(vp), HFS_EXCLUSIVE_LOCK))) {
- hfs_unlock_truncate(VTOC(vp));
+ hfs_unlock_truncate(VTOC(vp), TRUE);
return (error);
}
cp = VTOC(vp);
- error = hfs_truncate(vp, vap->va_data_size, vap->va_vaflags & 0xffff, 0, ap->a_context);
+ error = hfs_truncate(vp, vap->va_data_size, vap->va_vaflags & 0xffff, 1, ap->a_context);
- hfs_unlock_truncate(cp);
+ hfs_unlock_truncate(cp, TRUE);
if (error)
goto out;
}
cp = VTOC(vp);
}
+ /*
+ * If it is just an access time update request by itself
+ * we know the request is from kernel level code, and we
+ * can delay it without being as worried about consistency.
+ * This change speeds up mmaps, in the rare case that they
+ * get caught behind a sync.
+ */
+
+ if (vap->va_active == VNODE_ATTR_va_access_time) {
+ cp->c_touch_acctime=TRUE;
+ goto out;
+ }
+
+
+
/*
* Owner/group change request.
* We are guaranteed that the new owner/group is valid and legal.
* current securelevel are being changed.
*/
VATTR_SET_SUPPORTED(vap, va_flags);
- if (VATTR_IS_ACTIVE(vap, va_flags) &&
- ((error = hfs_chflags(vp, vap->va_flags, cred, p)) != 0))
- goto out;
+ if (VATTR_IS_ACTIVE(vap, va_flags)) {
+ u_int16_t *fdFlags;
- /*
- * If the file's extended security data is being changed, we
- * need to note the change. Note that because we don't store
- * the data, we do not set the SUPPORTED bit; this will cause
- * the VFS to use a fallback strategy.
- */
- if (VATTR_IS_ACTIVE(vap, va_acl)) {
- /* Remember if any ACL data was set or cleared. */
- if (vap->va_acl == NULL) {
- /* being cleared */
- if (cp->c_attr.ca_recflags & kHFSHasSecurityMask) {
- cp->c_attr.ca_recflags &= ~kHFSHasSecurityMask;
- cp->c_touch_chgtime = TRUE;
- }
- } else {
- /* being set */
- if ((cp->c_attr.ca_recflags & kHFSHasSecurityMask) == 0) {
- cp->c_attr.ca_recflags |= kHFSHasSecurityMask;
- cp->c_touch_chgtime = TRUE;
- }
- }
+ cp->c_flags = vap->va_flags;
+ cp->c_touch_chgtime = TRUE;
+
+ /*
+ * Mirror the UF_HIDDEN flag to the invisible bit of the Finder Info.
+ *
+ * The fdFlags for files and frFlags for folders are both 8 bytes
+ * into the userInfo (the first 16 bytes of the Finder Info). They
+ * are both 16-bit fields.
+ */
+ fdFlags = (u_int16_t *) &cp->c_finderinfo[8];
+ if (vap->va_flags & UF_HIDDEN)
+ *fdFlags |= OSSwapHostToBigConstInt16(kFinderInvisibleMask);
+ else
+ *fdFlags &= ~OSSwapHostToBigConstInt16(kFinderInvisibleMask);
}
/*
VATTR_IS_ACTIVE(vap, va_access_time) ||
VATTR_IS_ACTIVE(vap, va_modify_time) ||
VATTR_IS_ACTIVE(vap, va_backup_time)) {
- if (vnode_islnk(vp))
- goto done;
if (VATTR_IS_ACTIVE(vap, va_create_time))
cp->c_itime = vap->va_create_time.tv_sec;
if (VATTR_IS_ACTIVE(vap, va_access_time)) {
hfs_setencodingbits(hfsmp, cp->c_encoding);
}
-done:
if ((error = hfs_update(vp, TRUE)) != 0)
- goto out;
+ goto out;
HFS_KNOTE(vp, NOTE_ATTRIB);
out:
if (cp)
*/
__private_extern__
int
-hfs_chmod(struct vnode *vp, int mode, kauth_cred_t cred, struct proc *p)
+hfs_chmod(struct vnode *vp, int mode, __unused kauth_cred_t cred, __unused struct proc *p)
{
register struct cnode *cp = VTOC(vp);
- int error;
if (VTOVCB(vp)->vcbSigWord != kHFSPlusSigWord)
return (0);
}
-
-/*
- * Change the flags on a file or directory.
- * cnode must be locked before calling.
- */
-__private_extern__
-int
-hfs_chflags(struct vnode *vp, uint32_t flags, __unused kauth_cred_t cred, __unused struct proc *p)
-{
- register struct cnode *cp = VTOC(vp);
-
- cp->c_flags &= SF_SETTABLE;
- cp->c_flags |= (flags & UF_SETTABLE);
- cp->c_touch_chgtime = TRUE;
-
- return (0);
-}
-
-
/*
* Perform chown operation on cnode cp;
* code must be locked prior to call.
*/
__private_extern__
int
+#if !QUOTA
+hfs_chown(struct vnode *vp, uid_t uid, gid_t gid, __unused kauth_cred_t cred,
+ __unused struct proc *p)
+#else
hfs_chown(struct vnode *vp, uid_t uid, gid_t gid, kauth_cred_t cred,
- struct proc *p)
+ __unused struct proc *p)
+#endif
{
register struct cnode *cp = VTOC(vp);
uid_t ouid;
gid_t ogid;
- int error = 0;
- int is_member;
#if QUOTA
+ int error = 0;
register int i;
int64_t change;
#endif /* QUOTA */
panic("hfs_chown: lost quota");
#endif /* QUOTA */
- if (ouid != uid || ogid != gid)
+
+ /*
+ According to the SUSv3 Standard, chown() shall mark
+ for update the st_ctime field of the file.
+ (No exceptions mentioned)
+ */
cp->c_touch_chgtime = TRUE;
return (0);
}
struct hfsmount *hfsmp;
struct cat_desc tempdesc;
struct cat_attr tempattr;
+ const unsigned char *from_nameptr;
+ const unsigned char *to_nameptr;
+ char from_iname[32];
+ char to_iname[32];
+ u_int32_t tempflag;
+ cnid_t from_parid;
+ cnid_t to_parid;
int lockflags;
int error = 0, started_tr = 0, got_cookie = 0;
cat_cookie_t cookie;
/* Only normal files can be exchanged. */
if (!vnode_isreg(from_vp) || !vnode_isreg(to_vp) ||
- (from_cp->c_flag & C_HARDLINK) || (to_cp->c_flag & C_HARDLINK) ||
VNODE_IS_RSRC(from_vp) || VNODE_IS_RSRC(to_vp)) {
error = EINVAL;
goto exit;
/*
* Reserve some space in the Catalog file.
*/
- bzero(&cookie, sizeof(cookie));
if ((error = cat_preflight(hfsmp, CAT_EXCHANGE, &cookie, vfs_context_proc(ap->a_context)))) {
goto exit;
}
got_cookie = 1;
/* The backend code always tries to delete the virtual
- * extent id for exchanging files so we neeed to lock
+ * extent id for exchanging files so we need to lock
* the extents b-tree.
*/
lockflags = hfs_systemfile_lock(hfsmp, SFL_CATALOG | SFL_EXTENTS | SFL_ATTRIBUTE, HFS_EXCLUSIVE_LOCK);
+ /* Account for the location of the catalog objects. */
+ if (from_cp->c_flag & C_HARDLINK) {
+ MAKE_INODE_NAME(from_iname, sizeof(from_iname),
+ from_cp->c_attr.ca_linkref);
+ from_nameptr = (unsigned char *)from_iname;
+ from_parid = hfsmp->hfs_private_desc[FILE_HARDLINKS].cd_cnid;
+ from_cp->c_hint = 0;
+ } else {
+ from_nameptr = from_cp->c_desc.cd_nameptr;
+ from_parid = from_cp->c_parentcnid;
+ }
+ if (to_cp->c_flag & C_HARDLINK) {
+ MAKE_INODE_NAME(to_iname, sizeof(to_iname),
+ to_cp->c_attr.ca_linkref);
+ to_nameptr = (unsigned char *)to_iname;
+ to_parid = hfsmp->hfs_private_desc[FILE_HARDLINKS].cd_cnid;
+ to_cp->c_hint = 0;
+ } else {
+ to_nameptr = to_cp->c_desc.cd_nameptr;
+ to_parid = to_cp->c_parentcnid;
+ }
+
/* Do the exchange */
- error = ExchangeFileIDs(hfsmp,
- from_cp->c_desc.cd_nameptr,
- to_cp->c_desc.cd_nameptr,
- from_cp->c_parentcnid,
- to_cp->c_parentcnid,
- from_cp->c_hint,
- to_cp->c_hint);
+ error = ExchangeFileIDs(hfsmp, from_nameptr, to_nameptr, from_parid,
+ to_parid, from_cp->c_hint, to_cp->c_hint);
hfs_systemfile_unlock(hfsmp, lockflags);
/*
/* Save a copy of from attributes before swapping. */
bcopy(&from_cp->c_desc, &tempdesc, sizeof(struct cat_desc));
bcopy(&from_cp->c_attr, &tempattr, sizeof(struct cat_attr));
+ tempflag = from_cp->c_flag & (C_HARDLINK | C_HASXATTRS);
/*
* Swap the descriptors and all non-fork related attributes.
from_cp->c_uid = to_cp->c_uid;
from_cp->c_flags = to_cp->c_flags;
from_cp->c_mode = to_cp->c_mode;
+ from_cp->c_linkcount = to_cp->c_linkcount;
+ from_cp->c_flag = to_cp->c_flag & (C_HARDLINK | C_HASXATTRS);
+ from_cp->c_attr.ca_recflags = to_cp->c_attr.ca_recflags;
bcopy(to_cp->c_finderinfo, from_cp->c_finderinfo, 32);
bcopy(&tempdesc, &to_cp->c_desc, sizeof(struct cat_desc));
to_cp->c_uid = tempattr.ca_uid;
to_cp->c_flags = tempattr.ca_flags;
to_cp->c_mode = tempattr.ca_mode;
+ to_cp->c_linkcount = tempattr.ca_linkcount;
+ to_cp->c_flag = tempflag;
+ to_cp->c_attr.ca_recflags = tempattr.ca_recflags;
bcopy(tempattr.ca_finderinfo, to_cp->c_finderinfo, 32);
/* Rehash the cnodes using their new file IDs */
int took_trunc_lock = 0;
wait = (waitfor == MNT_WAIT);
-
+ if (always_do_fullfsync)
+ fullsync = 1;
+
/* HFS directories don't have any data blocks. */
if (vnode_isdir(vp))
goto metasync;
took_trunc_lock = 1;
/* Don't hold cnode lock when calling into cluster layer. */
- (void) cluster_push(vp, 0);
+ (void) cluster_push(vp, wait ? IO_SYNC : 0);
hfs_lock(cp, HFS_FORCE_LOCK);
}
*/
if ((wait || (cp->c_flag & C_ZFWANTSYNC)) &&
((cp->c_flags & UF_NODUMP) == 0) &&
- UBCINFOEXISTS(vp) && (fp = VTOF(vp)) &&
+ UBCINFOEXISTS(vp) && (vnode_issystem(vp) ==0) && (fp = VTOF(vp)) &&
cp->c_zftimeout != 0) {
microuptime(&tv);
- if (tv.tv_sec < cp->c_zftimeout) {
+ if (!fullsync && tv.tv_sec < (long)cp->c_zftimeout) {
/* Remember that a force sync was requested. */
cp->c_flag |= C_ZFWANTSYNC;
goto datasync;
cp->c_flag |= C_MODIFIED;
}
hfs_unlock(cp);
- (void) cluster_push(vp, 0);
+ (void) cluster_push(vp, wait ? IO_SYNC : 0);
hfs_lock(cp, HFS_FORCE_LOCK);
cp->c_flag &= ~C_ZFWANTSYNC;
}
datasync:
if (took_trunc_lock)
- hfs_unlock_truncate(cp);
+ hfs_unlock_truncate(cp, TRUE);
/*
* if we have a journal and if journal_active() returns != 0 then the
cp->c_touch_acctime = FALSE;
cp->c_touch_chgtime = FALSE;
cp->c_touch_modtime = FALSE;
- } else /* User file */ {
+ } else if ( !(vp->v_flag & VSWAP) ) /* User file */ {
retval = hfs_update(vp, wait);
- /* When MNT_WAIT is requested push out any delayed meta data */
- if ((retval == 0) && wait && cp->c_hint &&
+ /*
+ * When MNT_WAIT is requested push out the catalog record for
+ * this file. If they asked for a full fsync, we can skip this
+ * because the journal_flush or hfs_metasync_all will push out
+ * all of the metadata changes.
+ */
+ if ((retval == 0) && wait && !fullsync && cp->c_hint &&
!ISSET(cp->c_flag, C_DELETED | C_NOEXISTS)) {
hfs_metasync(VTOHFS(vp), (daddr64_t)cp->c_hint, p);
- }
+ }
- // make sure that we've really been called from the user
- // fsync() and if so push out any pending transactions
- // that this file might is a part of (and get them on
- // stable storage).
+ /*
+ * If this was a full fsync, make sure all metadata
+ * changes get to stable storage.
+ */
if (fullsync) {
if (hfsmp->jnl) {
journal_flush(hfsmp->jnl);
} else {
+ retval = hfs_metasync_all(hfsmp);
/* XXX need to pass context! */
VNOP_IOCTL(hfsmp->hfs_devvp, DKIOCSYNCHRONIZECACHE, NULL, FWRITE, NULL);
}
/* Sync an hfs catalog b-tree node */
static int
-hfs_metasync(struct hfsmount *hfsmp, daddr64_t node, struct proc *p)
+hfs_metasync(struct hfsmount *hfsmp, daddr64_t node, __unused struct proc *p)
{
vnode_t vp;
buf_t bp;
}
+/*
+ * Sync all hfs B-trees. Use this instead of journal_flush for a volume
+ * without a journal. Note that the volume bitmap does not get written;
+ * we rely on fsck_hfs to fix that up (which it can do without any loss
+ * of data).
+ */
+static int
+hfs_metasync_all(struct hfsmount *hfsmp)
+{
+ int lockflags;
+
+ /* Lock all of the B-trees so we get a mutually consistent state */
+ lockflags = hfs_systemfile_lock(hfsmp,
+ SFL_CATALOG|SFL_EXTENTS|SFL_ATTRIBUTE, HFS_EXCLUSIVE_LOCK);
+
+ /* Sync each of the B-trees */
+ if (hfsmp->hfs_catalog_vp)
+ hfs_btsync(hfsmp->hfs_catalog_vp, 0);
+ if (hfsmp->hfs_extents_vp)
+ hfs_btsync(hfsmp->hfs_extents_vp, 0);
+ if (hfsmp->hfs_attribute_vp)
+ hfs_btsync(hfsmp->hfs_attribute_vp, 0);
+
+ /* Wait for all of the writes to complete */
+ if (hfsmp->hfs_catalog_vp)
+ vnode_waitforwrites(hfsmp->hfs_catalog_vp, 0, 0, 0, "hfs_metasync_all");
+ if (hfsmp->hfs_extents_vp)
+ vnode_waitforwrites(hfsmp->hfs_extents_vp, 0, 0, 0, "hfs_metasync_all");
+ if (hfsmp->hfs_attribute_vp)
+ vnode_waitforwrites(hfsmp->hfs_attribute_vp, 0, 0, 0, "hfs_metasync_all");
+
+ hfs_systemfile_unlock(hfsmp, lockflags);
+
+ return 0;
+}
+
+
/*ARGSUSED 1*/
static int
-hfs_btsync_callback(struct buf *bp, void *dummy)
+hfs_btsync_callback(struct buf *bp, __unused void *dummy)
{
buf_clearflags(bp, B_LOCKED);
(void) buf_bawrite(bp);
{
struct vnode *dvp = ap->a_dvp;
struct vnode *vp = ap->a_vp;
+ struct cnode *dcp = VTOC(dvp);
+ struct cnode *cp = VTOC(vp);
int error;
- if (!vnode_isdir(vp)) {
+ if (!S_ISDIR(cp->c_mode)) {
return (ENOTDIR);
}
if (dvp == vp) {
return (EINVAL);
}
- if ((error = hfs_lockpair(VTOC(dvp), VTOC(vp), HFS_EXCLUSIVE_LOCK)))
+ if ((error = hfs_lockpair(dcp, cp, HFS_EXCLUSIVE_LOCK))) {
return (error);
-
+ }
error = hfs_removedir(dvp, vp, ap->a_cnp, 0);
-
- hfs_unlockpair(VTOC(dvp), VTOC(vp));
+ hfs_unlockpair(dcp, cp);
return (error);
}
hfs_removedir(struct vnode *dvp, struct vnode *vp, struct componentname *cnp,
int skip_reserve)
{
- vfs_context_t ctx = cnp->cn_context;
- struct proc *p = vfs_context_proc(ctx);
struct cnode *cp;
struct cnode *dcp;
struct hfsmount * hfsmp;
struct cat_desc desc;
- cat_cookie_t cookie;
int lockflags;
- int error = 0, started_tr = 0, got_cookie = 0;
+ int error = 0, started_tr = 0;
cp = VTOC(vp);
dcp = VTOC(dvp);
hfsmp = VTOHFS(vp);
- if (dcp == cp)
+ if (dcp == cp) {
return (EINVAL); /* cannot remove "." */
+ }
+ if (cp->c_flag & (C_NOEXISTS | C_DELETED)) {
+ return (0);
+ }
+ if (cp->c_entries != 0) {
+ return (ENOTEMPTY);
+ }
+
+ /* Check if we're removing the last link to an empty directory. */
+ if (cp->c_flag & C_HARDLINK) {
+ /* We could also return EBUSY here */
+ return hfs_unlink(hfsmp, dvp, vp, cnp, skip_reserve);
+ }
+
+ if ((hfsmp->hfs_attribute_vp != NULL) &&
+ (cp->c_attr.ca_recflags & kHFSHasAttributesMask) != 0) {
+
+ return hfs_removefile(dvp, vp, cnp, 0, 0, 1);
+ }
+
+ dcp->c_flag |= C_DIR_MODIFICATION;
#if QUOTA
- (void)hfs_getinoquota(cp);
+ if (hfsmp->hfs_flags & HFS_QUOTAS)
+ (void)hfs_getinoquota(cp);
#endif
if ((error = hfs_start_transaction(hfsmp)) != 0) {
goto out;
}
started_tr = 1;
- if (!skip_reserve) {
- /*
- * Reserve some space in the Catalog file.
- */
- bzero(&cookie, sizeof(cookie));
- if ((error = cat_preflight(hfsmp, CAT_DELETE, &cookie, p))) {
- goto out;
- }
- got_cookie = 1;
- }
-
/*
* Verify the directory is empty (and valid).
* (Rmdir ".." won't be valid since
* the current directory and thus be
* non-empty.)
*/
- if (cp->c_entries != 0) {
- error = ENOTEMPTY;
- goto out;
- }
if ((dcp->c_flags & APPEND) || (cp->c_flags & (IMMUTABLE | APPEND))) {
error = EPERM;
goto out;
}
- if (cp->c_entries > 0)
- panic("hfs_rmdir: attempting to delete a non-empty directory!");
-
/* Remove the entry from the namei cache: */
cache_purge(vp);
* name passed in and parent id from dvp (instead of using
* the cp->c_desc which may have changed).
*/
- bzero(&desc, sizeof(desc));
- desc.cd_nameptr = cnp->cn_nameptr;
+ desc.cd_nameptr = (const u_int8_t *)cnp->cn_nameptr;
desc.cd_namelen = cnp->cn_namelen;
- desc.cd_parentcnid = dcp->c_cnid;
+ desc.cd_parentcnid = dcp->c_fileid;
desc.cd_cnid = cp->c_cnid;
+ desc.cd_flags = CD_ISDIR;
+ desc.cd_encoding = cp->c_encoding;
+ desc.cd_hint = 0;
+
+ if (!hfs_valid_cnode(hfsmp, dvp, cnp, cp->c_fileid)) {
+ error = 0;
+ goto out;
+ }
/* Remove entry from catalog */
- lockflags = hfs_systemfile_lock(hfsmp, SFL_CATALOG | SFL_ATTRIBUTE, HFS_EXCLUSIVE_LOCK);
+ lockflags = hfs_systemfile_lock(hfsmp, SFL_CATALOG | SFL_ATTRIBUTE | SFL_BITMAP, HFS_EXCLUSIVE_LOCK);
+
+ if (!skip_reserve) {
+ /*
+ * Reserve some space in the Catalog file.
+ */
+ if ((error = cat_preflight(hfsmp, CAT_DELETE, NULL, 0))) {
+ hfs_systemfile_unlock(hfsmp, lockflags);
+ goto out;
+ }
+ }
+
error = cat_delete(hfsmp, &desc, &cp->c_attr);
if (error == 0) {
- /* Delete any attributes, ignore errors */
- (void) hfs_removeallattr(hfsmp, cp->c_fileid);
+ /* The parent lost a child */
+ if (dcp->c_entries > 0)
+ dcp->c_entries--;
+ DEC_FOLDERCOUNT(hfsmp, dcp->c_attr);
+ dcp->c_dirchangecnt++;
+ dcp->c_touch_chgtime = TRUE;
+ dcp->c_touch_modtime = TRUE;
+ hfs_touchtimes(hfsmp, cp);
+ (void) cat_update(hfsmp, &dcp->c_desc, &dcp->c_attr, NULL, NULL);
+ cp->c_flag &= ~(C_MODIFIED | C_FORCEUPDATE);
}
+
hfs_systemfile_unlock(hfsmp, lockflags);
if (error)
goto out;
#if QUOTA
- (void)hfs_chkiq(cp, -1, NOCRED, 0);
+ if (hfsmp->hfs_flags & HFS_QUOTAS)
+ (void)hfs_chkiq(cp, -1, NOCRED, 0);
#endif /* QUOTA */
- /* The parent lost a child */
- if (dcp->c_entries > 0)
- dcp->c_entries--;
- if (dcp->c_nlink > 0)
- dcp->c_nlink--;
- dcp->c_touch_chgtime = TRUE;
- dcp->c_touch_modtime = TRUE;
-
- dcp->c_flag |= C_FORCEUPDATE; // XXXdbg - don't screw around, force this guy out
-
- (void) hfs_update(dvp, 0);
- HFS_KNOTE(dvp, NOTE_WRITE | NOTE_LINK);
+ HFS_KNOTE(dvp, NOTE_WRITE | NOTE_LINK | NOTE_ATTRIB);
hfs_volupdate(hfsmp, VOL_RMDIR, (dcp->c_cnid == kHFSRootFolderID));
- cp->c_mode = 0; /* Makes the vnode go away...see inactive */
- cp->c_flag |= C_NOEXISTS;
+ /*
+ * directory open or in use (e.g. opendir() or current working
+ * directory for some process); wait for inactive to actually
+ * remove catalog entry
+ */
+ if (vnode_isinuse(vp, 0)) {
+ cp->c_flag |= C_DELETED;
+ } else {
+ cp->c_mode = 0; /* Makes the vnode go away...see inactive */
+ cp->c_flag |= C_NOEXISTS;
+ }
out:
+ dcp->c_flag &= ~C_DIR_MODIFICATION;
+ wakeup((caddr_t)&dcp->c_flag);
+
HFS_KNOTE(vp, NOTE_DELETE);
- if (got_cookie) {
- cat_postflight(hfsmp, &cookie, p);
- }
if (started_tr) {
hfs_end_transaction(hfsmp);
}
{
struct vnode *dvp = ap->a_dvp;
struct vnode *vp = ap->a_vp;
- int error;
+ struct cnode *dcp = VTOC(dvp);
+ struct cnode *cp = VTOC(vp);
+ struct vnode *rvp = cp->c_rsrc_vp;
+ int error=0, recycle_rsrc=0, rvid=0;
if (dvp == vp) {
return (EINVAL);
}
- hfs_lock_truncate(VTOC(vp), TRUE);
+ hfs_lock_truncate(cp, TRUE);
- if ((error = hfs_lockpair(VTOC(dvp), VTOC(vp), HFS_EXCLUSIVE_LOCK)))
- goto out;
+ if ((error = hfs_lockpair(dcp, cp, HFS_EXCLUSIVE_LOCK))) {
+ hfs_unlock_truncate(cp, TRUE);
+ return (error);
+ }
+ error = hfs_removefile(dvp, vp, ap->a_cnp, ap->a_flags, 0, 0);
- error = hfs_removefile(dvp, vp, ap->a_cnp, ap->a_flags, 0);
+ //
+ // If the remove succeeded and it's an open-unlinked file that has
+ // a resource fork vnode that's not in use, we will want to recycle
+ // the rvp *after* we're done unlocking everything. Otherwise the
+ // resource vnode will keep a v_parent reference on this vnode which
+ // prevents it from going through inactive/reclaim which means that
+ // the disk space associated with this file won't get free'd until
+ // something forces the resource vnode to get recycled (and that can
+ // take a very long time).
+ //
+ if (error == 0 && (cp->c_flag & C_DELETED) && rvp && !vnode_isinuse(rvp, 0)) {
+ rvid = vnode_vid(rvp);
+ recycle_rsrc = 1;
+ }
- hfs_unlockpair(VTOC(dvp), VTOC(vp));
-out:
- hfs_unlock_truncate(VTOC(vp));
+ /*
+ * Drop the truncate lock before unlocking the cnode
+ * (which can potentially perform a vnode_put and
+ * recycle the vnode which in turn might require the
+ * truncate lock)
+ */
+ hfs_unlock_truncate(cp, TRUE);
+ hfs_unlockpair(dcp, cp);
+
+ if (recycle_rsrc && vnode_getwithvid(rvp, rvid) == 0) {
+ vnode_ref(rvp);
+ vnode_rele(rvp);
+ vnode_recycle(rvp);
+ vnode_put(rvp);
+ }
+
return (error);
}
hfs_removefile_callback(struct buf *bp, void *hfsmp) {
if ( !(buf_flags(bp) & B_META))
- panic("hfs: symlink bp @ 0x%x is not marked meta-data!\n", bp);
+ panic("hfs: symlink bp @ %p is not marked meta-data!\n", bp);
/*
* it's part of the current transaction, kill it.
*/
*/
static int
hfs_removefile(struct vnode *dvp, struct vnode *vp, struct componentname *cnp,
- int flags, int skip_reserve)
+ int flags, int skip_reserve, int allow_dirs)
{
struct vnode *rvp = NULL;
struct cnode *cp;
int dataforkbusy = 0;
int rsrcforkbusy = 0;
int truncated = 0;
- cat_cookie_t cookie;
int lockflags;
int error = 0;
- int started_tr = 0, got_cookie = 0;
- int isbigfile = 0;
- cnid_t real_cnid = 0;
-
- /* Directories should call hfs_rmdir! */
- if (vnode_isdir(vp)) {
- return (EISDIR);
- }
+ int started_tr = 0;
+ int isbigfile = 0, defer_remove=0, isdir=0;
cp = VTOC(vp);
dcp = VTOC(dvp);
hfsmp = VTOHFS(vp);
+ /* Check if we lost a race post lookup. */
if (cp->c_flag & (C_NOEXISTS | C_DELETED)) {
- return 0;
+ return (0);
}
-
- // if it's not a hardlink, check that the parent
- // cnid is the same as the directory cnid
- if ( (cp->c_flag & C_HARDLINK) == 0
- && (cp->c_parentcnid != hfsmp->hfs_privdir_desc.cd_cnid)
- && (cp->c_parentcnid != dcp->c_cnid)) {
- error = EINVAL;
- goto out;
+
+ if (!hfs_valid_cnode(hfsmp, dvp, cnp, cp->c_fileid)) {
+ return 0;
}
/* Make sure a remove is permitted */
if (VNODE_IS_RSRC(vp)) {
- error = EPERM;
- goto out;
+ return (EPERM);
+ }
+ /* Don't allow deleting the journal or journal_info_block. */
+ if (hfsmp->jnl &&
+ (cp->c_fileid == hfsmp->hfs_jnlfileid || cp->c_fileid == hfsmp->hfs_jnlinfoblkid)) {
+ return (EPERM);
}
-
/*
- * Aquire a vnode for a non-empty resource fork.
- * (needed for hfs_truncate)
+ * Hard links require special handling.
*/
- if (cp->c_blocks - VTOF(vp)->ff_blocks) {
- error = hfs_vgetrsrc(hfsmp, vp, &rvp, 0);
- if (error)
- goto out;
+ if (cp->c_flag & C_HARDLINK) {
+ if ((flags & VNODE_REMOVE_NODELETEBUSY) && vnode_isinuse(vp, 0)) {
+ return (EBUSY);
+ } else {
+ /* A directory hard link with a link count of one is
+ * treated as a regular directory. Therefore it should
+ * only be removed using rmdir().
+ */
+ if ((vnode_isdir(vp) == 1) && (cp->c_linkcount == 1) &&
+ (allow_dirs == 0)) {
+ return (EPERM);
+ }
+ return hfs_unlink(hfsmp, dvp, vp, cnp, skip_reserve);
+ }
+ }
+ /* Directories should call hfs_rmdir! (unless they have a lot of attributes) */
+ if (vnode_isdir(vp)) {
+ if (allow_dirs == 0)
+ return (EPERM); /* POSIX */
+ isdir = 1;
+ }
+ /* Sanity check the parent ids. */
+ if ((cp->c_parentcnid != hfsmp->hfs_private_desc[FILE_HARDLINKS].cd_cnid) &&
+ (cp->c_parentcnid != dcp->c_fileid)) {
+ return (EINVAL);
}
- // XXXdbg - don't allow deleting the journal or journal_info_block
- if (hfsmp->jnl && cp->c_datafork) {
- struct HFSPlusExtentDescriptor *extd;
+ dcp->c_flag |= C_DIR_MODIFICATION;
- extd = &cp->c_datafork->ff_extents[0];
- if (extd->startBlock == HFSTOVCB(hfsmp)->vcbJinfoBlock || extd->startBlock == hfsmp->jnl_start) {
- error = EPERM;
- goto out;
- }
- }
+ // this guy is going away so mark him as such
+ cp->c_flag |= C_DELETED;
+
+
+ /* Remove our entry from the namei cache. */
+ cache_purge(vp);
/*
- * Check if this file is being used.
+ * Acquire a vnode for a non-empty resource fork.
+ * (needed for hfs_truncate)
*/
- if (vnode_isinuse(vp, 0))
- dataforkbusy = 1;
- if (rvp && vnode_isinuse(rvp, 0))
- rsrcforkbusy = 1;
+ if (isdir == 0 && (cp->c_blocks - VTOF(vp)->ff_blocks)) {
+ /*
+ * We must avoid calling hfs_vgetrsrc() when we have
+ * an active resource fork vnode to avoid deadlocks
+ * when that vnode is in the VL_TERMINATE state. We
+ * can defer removing the file and its resource fork
+ * until the call to hfs_vnop_inactive() occurs.
+ */
+ if (cp->c_rsrc_vp) {
+ defer_remove = 1;
+ } else {
+ error = hfs_vgetrsrc(hfsmp, vp, &rvp, FALSE);
+ if (error)
+ goto out;
+ /* Defer the vnode_put on rvp until the hfs_unlock(). */
+ cp->c_flag |= C_NEED_RVNODE_PUT;
+ }
+ }
+ /* Check if this file is being used. */
+ if (isdir == 0) {
+ dataforkbusy = vnode_isinuse(vp, 0);
+ rsrcforkbusy = rvp ? vnode_isinuse(rvp, 0) : 0;
+ }
+
+ /* Check if we have to break the deletion into multiple pieces. */
+ if (isdir == 0) {
+ isbigfile = ((cp->c_datafork->ff_size >= HFS_BIGFILE_SIZE) && overflow_extents(VTOF(vp)));
+ }
- // need this to check if we have to break the deletion
- // into multiple pieces
- isbigfile = (VTOC(vp)->c_datafork->ff_size >= HFS_BIGFILE_SIZE);
+ /* Check if the file has xattrs. If it does we'll have to delete them in
+ individual transactions in case there are too many */
+ if ((hfsmp->hfs_attribute_vp != NULL) &&
+ (cp->c_attr.ca_recflags & kHFSHasAttributesMask) != 0) {
+ defer_remove = 1;
+ }
/*
* Carbon semantics prohibit deleting busy files.
*/
if (dataforkbusy || rsrcforkbusy) {
if ((flags & VNODE_REMOVE_NODELETEBUSY) ||
- (hfsmp->hfs_privdir_desc.cd_cnid == 0)) {
+ (hfsmp->hfs_private_desc[FILE_HARDLINKS].cd_cnid == 0)) {
error = EBUSY;
goto out;
}
}
#if QUOTA
- (void)hfs_getinoquota(cp);
+ if (hfsmp->hfs_flags & HFS_QUOTAS)
+ (void)hfs_getinoquota(cp);
#endif /* QUOTA */
- /*
- * We do the ubc_setsize before the hfs_truncate
- * since we'll be inside a transaction.
- */
- if ((cp->c_flag & C_HARDLINK) == 0 &&
- (!dataforkbusy || !rsrcforkbusy)) {
+ /* Check if we need a ubc_setsize. */
+ if (isdir == 0 && (!dataforkbusy || !rsrcforkbusy)) {
/*
- * A ubc_setsize can cause a pagein here
- * so we need to the drop cnode lock. Note
- * that we still hold the truncate lock.
+ * A ubc_setsize can cause a pagein so defer it
+ * until after the cnode lock is dropped. The
+ * cnode lock cannot be dropped/reacquired here
+ * since we might already hold the journal lock.
*/
- hfs_unlock(cp);
if (!dataforkbusy && cp->c_datafork->ff_blocks && !isbigfile) {
- ubc_setsize(vp, 0);
+ cp->c_flag |= C_NEED_DATA_SETSIZE;
}
if (!rsrcforkbusy && rvp) {
- ubc_setsize(rvp, 0);
+ cp->c_flag |= C_NEED_RSRC_SETSIZE;
}
- hfs_lock(cp, HFS_FORCE_LOCK);
- } else {
- struct cat_desc cndesc;
-
- // for hard links, re-lookup the name that was passed
- // in so we get the correct cnid for the name (as
- // opposed to the c_cnid in the cnode which could have
- // been changed before this node got locked).
- bzero(&cndesc, sizeof(cndesc));
- cndesc.cd_nameptr = cnp->cn_nameptr;
- cndesc.cd_namelen = cnp->cn_namelen;
- cndesc.cd_parentcnid = VTOC(dvp)->c_cnid;
- cndesc.cd_hint = VTOC(dvp)->c_childhint;
-
- lockflags = hfs_systemfile_lock(hfsmp, SFL_CATALOG, HFS_SHARED_LOCK);
-
- if (cat_lookup(hfsmp, &cndesc, 0, NULL, NULL, NULL, &real_cnid) != 0) {
- hfs_systemfile_unlock(hfsmp, lockflags);
- error = ENOENT;
- goto out;
- }
-
- hfs_systemfile_unlock(hfsmp, lockflags);
}
if ((error = hfs_start_transaction(hfsmp)) != 0) {
- goto out;
- }
- started_tr = 1;
-
- if (!skip_reserve) {
- /*
- * Reserve some space in the Catalog file.
- */
- if ((error = cat_preflight(hfsmp, CAT_DELETE, &cookie, 0))) {
- goto out;
- }
- got_cookie = 1;
+ goto out;
}
-
- /* Remove our entry from the namei cache. */
- cache_purge(vp);
+ started_tr = 1;
// XXXdbg - if we're journaled, kill any dirty symlink buffers
if (hfsmp->jnl && vnode_islnk(vp))
/*
* Truncate any non-busy forks. Busy forks will
- * get trucated when their vnode goes inactive.
+ * get truncated when their vnode goes inactive.
*
* Since we're already inside a transaction,
* tell hfs_truncate to skip the ubc_setsize.
- *
- * (Note: hard links are truncated in VOP_INACTIVE)
*/
- if ((cp->c_flag & C_HARDLINK) == 0) {
+ if (isdir == 0) {
int mode = cp->c_mode;
if (!dataforkbusy && !isbigfile && cp->c_datafork->ff_blocks != 0) {
truncated = 1;
}
if (!rsrcforkbusy && rvp) {
- cp->c_mode = 0; /* Suppress hfs_update */
+ cp->c_mode = 0; /* Suppress hfs_update */
error = hfs_truncate(rvp, (off_t)0, IO_NDELAY, 1, ctx);
cp->c_mode = mode;
if (error)
*/
desc.cd_flags = 0;
desc.cd_encoding = cp->c_desc.cd_encoding;
- desc.cd_nameptr = cnp->cn_nameptr;
+ desc.cd_nameptr = (const u_int8_t *)cnp->cn_nameptr;
desc.cd_namelen = cnp->cn_namelen;
- desc.cd_parentcnid = dcp->c_cnid;
+ desc.cd_parentcnid = dcp->c_fileid;
desc.cd_hint = cp->c_desc.cd_hint;
- if (real_cnid) {
- // if it was a hardlink we had to re-lookup the cnid
- desc.cd_cnid = real_cnid;
- } else {
- desc.cd_cnid = cp->c_cnid;
- }
+ desc.cd_cnid = cp->c_cnid;
microtime(&tv);
/*
- * There are 3 remove cases to consider:
- * 1. File is a hardlink ==> remove the link
- * 2. File is busy (in use) ==> move/rename the file
- * 3. File is not in use ==> remove the file
+ * There are two cases to consider:
+ * 1. File is busy/big/defer_remove ==> move/rename the file
+ * 2. File is not in use ==> remove the file
*/
-
- if (cp->c_flag & C_HARDLINK) {
- lockflags = hfs_systemfile_lock(hfsmp, SFL_CATALOG, HFS_EXCLUSIVE_LOCK);
-
- /* Delete the link record */
- error = cat_delete(hfsmp, &desc, &cp->c_attr);
- if (error == 0) {
- /* Update the parent directory */
- if (dcp->c_entries > 0)
- dcp->c_entries--;
- if (dcp->c_nlink > 0)
- dcp->c_nlink--;
- dcp->c_ctime = tv.tv_sec;
- dcp->c_mtime = tv.tv_sec;
- (void ) cat_update(hfsmp, &dcp->c_desc, &dcp->c_attr, NULL, NULL);
-
- if (--cp->c_nlink < 1) {
- char inodename[32];
- char delname[32];
- struct cat_desc to_desc;
- struct cat_desc from_desc;
-
- /*
- * This is now esentially an open deleted file.
- * Rename it to reflect this state which makes
- * orphan file cleanup easier (see hfs_remove_orphans).
- * Note: a rename failure here is not fatal.
- */
- MAKE_INODE_NAME(inodename, cp->c_rdev);
- bzero(&from_desc, sizeof(from_desc));
- from_desc.cd_nameptr = inodename;
- from_desc.cd_namelen = strlen(inodename);
- from_desc.cd_parentcnid = hfsmp->hfs_privdir_desc.cd_cnid;
- from_desc.cd_flags = 0;
- from_desc.cd_cnid = cp->c_fileid;
-
- MAKE_DELETED_NAME(delname, cp->c_fileid);
- bzero(&to_desc, sizeof(to_desc));
- to_desc.cd_nameptr = delname;
- to_desc.cd_namelen = strlen(delname);
- to_desc.cd_parentcnid = hfsmp->hfs_privdir_desc.cd_cnid;
- to_desc.cd_flags = 0;
- to_desc.cd_cnid = cp->c_fileid;
-
- error = cat_rename(hfsmp, &from_desc, &hfsmp->hfs_privdir_desc,
- &to_desc, (struct cat_desc *)NULL);
- if (error != 0) {
- panic("hfs_removefile: error %d from cat_rename(%s %s) cp 0x%x\n",
- inodename, delname, cp);
- }
- if (error == 0) {
- /* Update the file's state */
- cp->c_flag |= C_DELETED;
- cp->c_ctime = tv.tv_sec;
- (void) cat_update(hfsmp, &to_desc, &cp->c_attr, NULL, NULL);
- }
- } else {
- /* Update the file's state */
- cp->c_ctime = tv.tv_sec;
- (void) cat_update(hfsmp, &cp->c_desc, &cp->c_attr, NULL, NULL);
- }
- }
- hfs_systemfile_unlock(hfsmp, lockflags);
- if (error != 0)
- goto out;
-
- hfs_volupdate(hfsmp, VOL_RMFILE, (dcp->c_cnid == kHFSRootFolderID));
-
- } else if (dataforkbusy || rsrcforkbusy || isbigfile) {
+ if (dataforkbusy || rsrcforkbusy || isbigfile || defer_remove) {
char delname[32];
struct cat_desc to_desc;
struct cat_desc todir_desc;
bzero(&todir_desc, sizeof(todir_desc));
todir_desc.cd_parentcnid = 2;
- MAKE_DELETED_NAME(delname, cp->c_fileid);
+ MAKE_DELETED_NAME(delname, sizeof(delname), cp->c_fileid);
bzero(&to_desc, sizeof(to_desc));
- to_desc.cd_nameptr = delname;
+ to_desc.cd_nameptr = (const u_int8_t *)delname;
to_desc.cd_namelen = strlen(delname);
- to_desc.cd_parentcnid = hfsmp->hfs_privdir_desc.cd_cnid;
+ to_desc.cd_parentcnid = hfsmp->hfs_private_desc[FILE_HARDLINKS].cd_cnid;
to_desc.cd_flags = 0;
to_desc.cd_cnid = cp->c_cnid;
lockflags = hfs_systemfile_lock(hfsmp, SFL_CATALOG, HFS_EXCLUSIVE_LOCK);
+ if (!skip_reserve) {
+ if ((error = cat_preflight(hfsmp, CAT_RENAME, NULL, 0))) {
+ hfs_systemfile_unlock(hfsmp, lockflags);
+ goto out;
+ }
+ }
error = cat_rename(hfsmp, &desc, &todir_desc,
&to_desc, (struct cat_desc *)NULL);
if (error == 0) {
- hfsmp->hfs_privdir_attr.ca_entries++;
- (void) cat_update(hfsmp, &hfsmp->hfs_privdir_desc,
- &hfsmp->hfs_privdir_attr, NULL, NULL);
+ hfsmp->hfs_private_attr[FILE_HARDLINKS].ca_entries++;
+ if (isdir == 1) {
+ INC_FOLDERCOUNT(hfsmp, hfsmp->hfs_private_attr[FILE_HARDLINKS]);
+ }
+ (void) cat_update(hfsmp, &hfsmp->hfs_private_desc[FILE_HARDLINKS],
+ &hfsmp->hfs_private_attr[FILE_HARDLINKS], NULL, NULL);
/* Update the parent directory */
if (dcp->c_entries > 0)
dcp->c_entries--;
- if (dcp->c_nlink > 0)
- dcp->c_nlink--;
+ if (isdir == 1) {
+ DEC_FOLDERCOUNT(hfsmp, dcp->c_attr);
+ }
+ dcp->c_dirchangecnt++;
dcp->c_ctime = tv.tv_sec;
dcp->c_mtime = tv.tv_sec;
(void) cat_update(hfsmp, &dcp->c_desc, &dcp->c_attr, NULL, NULL);
/* Update the file's state */
cp->c_flag |= C_DELETED;
cp->c_ctime = tv.tv_sec;
- --cp->c_nlink;
+ --cp->c_linkcount;
(void) cat_update(hfsmp, &to_desc, &cp->c_attr, NULL, NULL);
}
hfs_systemfile_unlock(hfsmp, lockflags);
goto out;
}
- lockflags = hfs_systemfile_lock(hfsmp, SFL_CATALOG | SFL_ATTRIBUTE, HFS_EXCLUSIVE_LOCK);
+ lockflags = hfs_systemfile_lock(hfsmp, SFL_CATALOG | SFL_ATTRIBUTE | SFL_BITMAP, HFS_EXCLUSIVE_LOCK);
+ if (!skip_reserve) {
+ if ((error = cat_preflight(hfsmp, CAT_DELETE, NULL, 0))) {
+ hfs_systemfile_unlock(hfsmp, lockflags);
+ goto out;
+ }
+ }
error = cat_delete(hfsmp, &desc, &cp->c_attr);
}
}
if (error == 0) {
- /* Delete any attributes, ignore errors */
- (void) hfs_removeallattr(hfsmp, cp->c_fileid);
-
/* Update the parent directory */
if (dcp->c_entries > 0)
dcp->c_entries--;
- if (dcp->c_nlink > 0)
- dcp->c_nlink--;
+ dcp->c_dirchangecnt++;
dcp->c_ctime = tv.tv_sec;
dcp->c_mtime = tv.tv_sec;
(void) cat_update(hfsmp, &dcp->c_desc, &dcp->c_attr, NULL, NULL);
goto out;
#if QUOTA
- (void)hfs_chkiq(cp, -1, NOCRED, 0);
+ if (hfsmp->hfs_flags & HFS_QUOTAS)
+ (void)hfs_chkiq(cp, -1, NOCRED, 0);
#endif /* QUOTA */
cp->c_mode = 0;
truncated = 0; // because the catalog entry is gone
cp->c_flag |= C_NOEXISTS;
+ cp->c_flag &= ~C_DELETED;
cp->c_touch_chgtime = TRUE; /* XXX needed ? */
- --cp->c_nlink;
+ --cp->c_linkcount;
hfs_volupdate(hfsmp, VOL_RMFILE, (dcp->c_cnid == kHFSRootFolderID));
}
/*
* All done with this cnode's descriptor...
*
- * Note: all future catalog calls for this cnode must be
- * by fileid only. This is OK for HFS (which doesn't have
- * file thread records) since HFS doesn't support hard
- * links or the removal of busy files.
+ * Note: all future catalog calls for this cnode must be by
+ * fileid only. This is OK for HFS (which doesn't have file
+ * thread records) since HFS doesn't support the removal of
+ * busy files.
*/
cat_releasedesc(&cp->c_desc);
HFS_KNOTE(dvp, NOTE_WRITE);
out:
- if (got_cookie) {
- cat_postflight(hfsmp, &cookie, 0);
+ if (error) {
+ cp->c_flag &= ~C_DELETED;
}
/* Commit the truncation to the catalog record */
hfs_end_transaction(hfsmp);
}
+ dcp->c_flag &= ~C_DIR_MODIFICATION;
+ wakeup((caddr_t)&dcp->c_flag);
+
HFS_KNOTE(vp, NOTE_DELETE);
if (rvp) {
HFS_KNOTE(rvp, NOTE_DELETE);
- /* Defer the vnode_put on rvp until the hfs_unlock(). */
- cp->c_flag |= C_NEED_RVNODE_PUT;
- };
+ }
return (error);
}
__private_extern__ void
replace_desc(struct cnode *cp, struct cat_desc *cdp)
{
+ // fixes 4348457 and 4463138
+ if (&cp->c_desc == cdp) {
+ return;
+ }
+
/* First release allocated name buffer */
if (cp->c_desc.cd_flags & CD_HASBUF && cp->c_desc.cd_nameptr != 0) {
- char *name = cp->c_desc.cd_nameptr;
+ const u_int8_t *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);
+ vfs_removename((const char *)name);
}
bcopy(cdp, &cp->c_desc, sizeof(cp->c_desc));
struct vnode *tdvp = ap->a_tdvp;
struct vnode *fvp = ap->a_fvp;
struct vnode *fdvp = ap->a_fdvp;
+ struct vnode *rvp = NULLVP;
struct componentname *tcnp = ap->a_tcnp;
struct componentname *fcnp = ap->a_fcnp;
struct proc *p = vfs_context_proc(ap->a_context);
int took_trunc_lock = 0;
int lockflags;
int error;
-
+ int rsrc_vid = 0;
+ int recycle_rsrc = 0;
+
/* When tvp exist, take the truncate lock for the hfs_removefile(). */
- if (tvp && vnode_isreg(tvp)) {
+ if (tvp && (vnode_isreg(tvp) || vnode_islnk(tvp))) {
hfs_lock_truncate(VTOC(tvp), TRUE);
took_trunc_lock = 1;
}
+ retry:
error = hfs_lockfour(VTOC(fdvp), VTOC(fvp), VTOC(tdvp), tvp ? VTOC(tvp) : NULL,
HFS_EXCLUSIVE_LOCK);
if (error) {
- if (took_trunc_lock)
- hfs_unlock_truncate(VTOC(tvp));
+ if (took_trunc_lock) {
+ hfs_unlock_truncate(VTOC(tvp), TRUE);
+ took_trunc_lock = 0;
+ }
+ /*
+ * tvp might no longer exist. if we get ENOENT, re-check the
+ * C_NOEXISTS flag on tvp to find out whether it's still in the
+ * namespace.
+ */
+ if (error == ENOENT && tvp) {
+ /*
+ * It's okay to just check C_NOEXISTS without having a lock,
+ * because we have an iocount on it from the vfs layer so it can't
+ * have disappeared.
+ */
+ if (VTOC(tvp)->c_flag & C_NOEXISTS) {
+ /*
+ * tvp is no longer in the namespace. Try again with NULL
+ * tvp/tcp (NULLing these out is fine because the vfs syscall
+ * will vnode_put the vnodes).
+ */
+ tcp = NULL;
+ tvp = NULL;
+ goto retry;
+ }
+ }
return (error);
}
hfsmp = VTOHFS(tdvp);
/* Check for a race against unlink. */
- if (fcp->c_flag & C_NOEXISTS) {
+ if ((fcp->c_flag & (C_NOEXISTS | C_DELETED)) || !hfs_valid_cnode(hfsmp, fdvp, fcnp, fcp->c_fileid)) {
error = ENOENT;
goto out;
}
+ if (tcp && ((tcp->c_flag & (C_NOEXISTS | C_DELETED)) || !hfs_valid_cnode(hfsmp, tdvp, tcnp, tcp->c_fileid))) {
+ //
+ // hmm, the destination vnode isn't valid any more.
+ // in this case we can just drop him and pretend he
+ // never existed in the first place.
+ //
+ if (took_trunc_lock) {
+ hfs_unlock_truncate(VTOC(tvp), TRUE);
+ took_trunc_lock = 0;
+ }
+
+ hfs_unlockfour(fdcp, fcp, tdcp, tcp);
+
+ tcp = NULL;
+ tvp = NULL;
+
+ // retry the locking with tvp null'ed out
+ goto retry;
+ }
+
+ fdcp->c_flag |= C_DIR_MODIFICATION;
+ if (fdvp != tdvp) {
+ tdcp->c_flag |= C_DIR_MODIFICATION;
+ }
+
+ /*
+ * Disallow renaming of a directory hard link if the source and
+ * destination parent directories are different, or a directory whose
+ * descendant is a directory hard link and the one of the ancestors
+ * of the destination directory is a directory hard link.
+ */
+ if (vnode_isdir(fvp) && (fdvp != tdvp)) {
+ if (fcp->c_flag & C_HARDLINK) {
+ error = EPERM;
+ goto out;
+ }
+ if (fcp->c_attr.ca_recflags & kHFSHasChildLinkMask) {
+ lockflags = hfs_systemfile_lock(hfsmp, SFL_CATALOG, HFS_SHARED_LOCK);
+ if (cat_check_link_ancestry(hfsmp, tdcp->c_fileid, 0)) {
+ error = EPERM;
+ hfs_systemfile_unlock(hfsmp, lockflags);
+ goto out;
+ }
+ hfs_systemfile_unlock(hfsmp, lockflags);
+ }
+ }
+
/*
* The following edge case is caught here:
* (to cannot be a descendent of from)
* /
* o tvp
*/
- if (tdcp->c_parentcnid == fcp->c_cnid) {
+ if (tdcp->c_parentcnid == fcp->c_fileid) {
error = EINVAL;
goto out;
}
vnode_isreg(fvp) &&
(fdvp != tdvp) &&
(fdcp->c_desc.cd_nameptr != NULL) &&
- (strcmp(fdcp->c_desc.cd_nameptr, CARBON_TEMP_DIR_NAME) == 0)) {
+ (strncmp((const char *)fdcp->c_desc.cd_nameptr,
+ CARBON_TEMP_DIR_NAME,
+ sizeof(CARBON_TEMP_DIR_NAME)) == 0)) {
fcp->c_flags &= ~UF_NODUMP;
fcp->c_touch_chgtime = TRUE;
(void) hfs_update(fvp, 0);
}
bzero(&from_desc, sizeof(from_desc));
- from_desc.cd_nameptr = fcnp->cn_nameptr;
+ from_desc.cd_nameptr = (const u_int8_t *)fcnp->cn_nameptr;
from_desc.cd_namelen = fcnp->cn_namelen;
- from_desc.cd_parentcnid = fdcp->c_cnid;
+ from_desc.cd_parentcnid = fdcp->c_fileid;
from_desc.cd_flags = fcp->c_desc.cd_flags & ~(CD_HASBUF | CD_DECOMPOSED);
from_desc.cd_cnid = fcp->c_cnid;
bzero(&to_desc, sizeof(to_desc));
- to_desc.cd_nameptr = tcnp->cn_nameptr;
+ to_desc.cd_nameptr = (const u_int8_t *)tcnp->cn_nameptr;
to_desc.cd_namelen = tcnp->cn_namelen;
- to_desc.cd_parentcnid = tdcp->c_cnid;
+ to_desc.cd_parentcnid = tdcp->c_fileid;
to_desc.cd_flags = fcp->c_desc.cd_flags & ~(CD_HASBUF | CD_DECOMPOSED);
to_desc.cd_cnid = fcp->c_cnid;
}
started_tr = 1;
+ /* hfs_vnop_link() and hfs_vnop_rename() set kHFSHasChildLinkMask
+ * inside a journal transaction and without holding a cnode lock.
+ * As setting of this bit depends on being in journal transaction for
+ * concurrency, check this bit again after we start journal transaction for rename
+ * to ensure that this directory does not have any descendant that
+ * is a directory hard link.
+ */
+ if (vnode_isdir(fvp) && (fdvp != tdvp)) {
+ if (fcp->c_attr.ca_recflags & kHFSHasChildLinkMask) {
+ lockflags = hfs_systemfile_lock(hfsmp, SFL_CATALOG, HFS_SHARED_LOCK);
+ if (cat_check_link_ancestry(hfsmp, tdcp->c_fileid, 0)) {
+ error = EPERM;
+ hfs_systemfile_unlock(hfsmp, lockflags);
+ goto out;
+ }
+ hfs_systemfile_unlock(hfsmp, lockflags);
+ }
+ }
+
// if it's a hardlink then re-lookup the name so
// that we get the correct cnid in from_desc (see
// the comment in hfs_removefile for more details)
struct cat_desc tmpdesc;
cnid_t real_cnid;
- bzero(&tmpdesc, sizeof(tmpdesc));
- tmpdesc.cd_nameptr = fcnp->cn_nameptr;
+ tmpdesc.cd_nameptr = (const u_int8_t *)fcnp->cn_nameptr;
tmpdesc.cd_namelen = fcnp->cn_namelen;
- tmpdesc.cd_parentcnid = fdcp->c_cnid;
+ tmpdesc.cd_parentcnid = fdcp->c_fileid;
tmpdesc.cd_hint = fdcp->c_childhint;
+ tmpdesc.cd_flags = fcp->c_desc.cd_flags & CD_ISDIR;
+ tmpdesc.cd_encoding = 0;
lockflags = hfs_systemfile_lock(hfsmp, SFL_CATALOG, HFS_SHARED_LOCK);
/*
* Reserve some space in the Catalog file.
*/
- bzero(&cookie, sizeof(cookie));
if ((error = cat_preflight(hfsmp, CAT_RENAME + CAT_DELETE, &cookie, p))) {
goto out;
}
*/
if (tvp) {
/*
- * When fvp matches tvp they must be case variants
- * or hard links.
+ * When fvp matches tvp they could be case variants
+ * or matching hard links.
*/
if (fvp == tvp) {
- /*
- * If this a hard link with different parents
- * and its not a case variant then tvp should
- * be removed.
- */
- if (!((fcp->c_flag & C_HARDLINK) &&
- ((fdvp != tdvp) ||
- (hfs_namecmp(fcnp->cn_nameptr, fcnp->cn_namelen,
- tcnp->cn_nameptr, tcnp->cn_namelen) != 0)))) {
- goto skip;
+ if (!(fcp->c_flag & C_HARDLINK)) {
+ goto skip_rm; /* simple case variant */
+
+ } else if ((fdvp != tdvp) ||
+ (hfsmp->hfs_flags & HFS_CASE_SENSITIVE)) {
+ goto out; /* matching hardlinks, nothing to do */
+
+ } else if (hfs_namecmp((const u_int8_t *)fcnp->cn_nameptr, fcnp->cn_namelen,
+ (const u_int8_t *)tcnp->cn_nameptr, tcnp->cn_namelen) == 0) {
+ goto skip_rm; /* case-variant hardlink in the same dir */
+ } else {
+ goto out; /* matching hardlink, nothing to do */
}
- } else {
- cache_purge(tvp);
}
if (vnode_isdir(tvp))
error = hfs_removedir(tdvp, tvp, tcnp, HFSRM_SKIP_RESERVE);
else {
- error = hfs_removefile(tdvp, tvp, tcnp, 0, HFSRM_SKIP_RESERVE);
+ if (tcp){
+ rvp = tcp->c_rsrc_vp;
+ }
+ error = hfs_removefile(tdvp, tvp, tcnp, 0, HFSRM_SKIP_RESERVE, 0);
+
+ /* If the destination file had a resource fork vnode, we couldn't do
+ * anything about it in hfs_removefile because we didn't have a reference on it.
+ * We need to take action here to prevent it from leaking blocks. If removefile
+ * succeeded, then squirrel away the vid of the resource fork vnode and force a
+ * recycle after dropping all of the locks. The vid is guaranteed not to change
+ * at this point because we still hold the cnode lock.
+ */
+ if ((error == 0) && (tcp->c_flag & C_DELETED) && rvp && !vnode_isinuse(rvp, 0)) {
+ rsrc_vid = vnode_vid(rvp);
+ recycle_rsrc = 1;
+ }
}
if (error)
goto out;
tvp_deleted = 1;
}
-skip:
+skip_rm:
/*
* All done with tvp and fvp
+ *
+ * We also jump to this point if there was no destination observed during lookup and namei.
+ * However, because only iocounts are held at the VFS layer, there is nothing preventing a
+ * competing thread from racing us and creating a file or dir at the destination of this rename
+ * operation. If this occurs, it may cause us to get a spurious EEXIST out of the cat_rename
+ * call below. To preserve rename's atomicity, we need to signal VFS to re-drive the
+ * namei/lookup and restart the rename operation. EEXIST is an allowable errno to be bubbled
+ * out of the rename syscall, but not for this reason, since it is a synonym errno for ENOTEMPTY.
+ * To signal VFS, we return ERECYCLE (which is also used for lookup restarts). This errno
+ * will be swallowed and it will restart the operation.
*/
lockflags = hfs_systemfile_lock(hfsmp, SFL_CATALOG, HFS_EXCLUSIVE_LOCK);
hfs_systemfile_unlock(hfsmp, lockflags);
if (error) {
+ if (error == EEXIST) {
+ error = ERECYCLE;
+ }
goto out;
}
/* Invalidate negative cache entries in the destination directory */
- if (hfsmp->hfs_flags & HFS_CASE_SENSITIVE)
+ if (tdcp->c_flag & C_NEG_ENTRIES) {
cache_purge_negatives(tdvp);
+ tdcp->c_flag &= ~C_NEG_ENTRIES;
+ }
/* Update cnode's catalog descriptor */
replace_desc(fcp, &out_desc);
- fcp->c_parentcnid = tdcp->c_cnid;
+ fcp->c_parentcnid = tdcp->c_fileid;
fcp->c_hint = 0;
hfs_volupdate(hfsmp, vnode_isdir(fvp) ? VOL_RMDIR : VOL_RMFILE,
/* Update both parent directories. */
if (fdvp != tdvp) {
- tdcp->c_nlink++;
+ if (vnode_isdir(fvp)) {
+ /* If the source directory has directory hard link
+ * descendants, set the kHFSHasChildLinkBit in the
+ * destination parent hierarchy
+ */
+ if ((fcp->c_attr.ca_recflags & kHFSHasChildLinkMask) &&
+ !(tdcp->c_attr.ca_recflags & kHFSHasChildLinkMask)) {
+
+ tdcp->c_attr.ca_recflags |= kHFSHasChildLinkMask;
+
+ error = cat_set_childlinkbit(hfsmp, tdcp->c_parentcnid);
+ if (error) {
+ printf ("hfs_vnop_rename: error updating parent chain for %u\n", tdcp->c_cnid);
+ error = 0;
+ }
+ }
+ INC_FOLDERCOUNT(hfsmp, tdcp->c_attr);
+ DEC_FOLDERCOUNT(hfsmp, fdcp->c_attr);
+ }
tdcp->c_entries++;
- if (fdcp->c_nlink > 0)
- fdcp->c_nlink--;
+ tdcp->c_dirchangecnt++;
if (fdcp->c_entries > 0)
fdcp->c_entries--;
+ fdcp->c_dirchangecnt++;
fdcp->c_touch_chgtime = TRUE;
fdcp->c_touch_modtime = TRUE;
if (tdvp != fdvp) HFS_KNOTE(tdvp, NOTE_WRITE);
};
+ fdcp->c_flag &= ~C_DIR_MODIFICATION;
+ wakeup((caddr_t)&fdcp->c_flag);
+ if (fdvp != tdvp) {
+ tdcp->c_flag &= ~C_DIR_MODIFICATION;
+ wakeup((caddr_t)&tdcp->c_flag);
+ }
+
if (took_trunc_lock)
- hfs_unlock_truncate(VTOC(tvp));
+ hfs_unlock_truncate(VTOC(tvp), TRUE);
hfs_unlockfour(fdcp, fcp, tdcp, tcp);
+ /* Now that we've dropped locks, see if we need to force recycle on the old
+ * destination's rsrc fork, preventing a leak of the rsrc fork's blocks. Note that
+ * doing the ref/rele is in order to twiddle the VL_INACTIVE bit to the vnode's flags
+ * so that on the last vnode_put for this vnode, we will force vnop_inactive to be triggered.
+ */
+ if ((recycle_rsrc) && (vnode_getwithvid(rvp, rsrc_vid) == 0)) {
+ vnode_ref(rvp);
+ vnode_rele(rvp);
+ vnode_recycle(rvp);
+ vnode_put (rvp);
+ }
+
+
/* After tvp is removed the only acceptable error is EIO */
if (error && tvp_deleted)
error = EIO;
struct vnode **vpp = ap->a_vpp;
struct vnode *dvp = ap->a_dvp;
struct vnode *vp = NULL;
+ struct cnode *cp = NULL;
struct hfsmount *hfsmp;
struct filefork *fp;
struct buf *bp = NULL;
char *datap;
int started_tr = 0;
- int len, error;
+ u_int32_t len;
+ int error;
/* HFS standard disks don't support symbolic links */
if (VTOVCB(dvp)->vcbSigWord != kHFSPlusSigWord)
if (ap->a_target[0] == 0)
return (EINVAL);
+ hfsmp = VTOHFS(dvp);
+ len = strlen(ap->a_target);
+
+ /* Check for free space */
+ if (((u_int64_t)hfs_freeblks(hfsmp, 0) * (u_int64_t)hfsmp->blockSize) < len) {
+ return (ENOSPC);
+ }
+
/* Create the vnode */
ap->a_vap->va_mode |= S_IFLNK;
if ((error = hfs_makenode(dvp, vpp, ap->a_cnp, ap->a_vap, ap->a_context))) {
goto out;
}
vp = *vpp;
- if ((error = hfs_lock(VTOC(vp), HFS_EXCLUSIVE_LOCK)))
- return (error);
+ if ((error = hfs_lock(VTOC(vp), HFS_EXCLUSIVE_LOCK))) {
+ goto out;
+ }
+ cp = VTOC(vp);
fp = VTOF(vp);
- hfsmp = VTOHFS(dvp);
- len = strlen(ap->a_target);
+
+ if (cp->c_flag & (C_NOEXISTS | C_DELETED)) {
+ goto out;
+ }
#if QUOTA
- (void)hfs_getinoquota(VTOC(vp));
+ (void)hfs_getinoquota(cp);
#endif /* QUOTA */
if ((error = hfs_start_transaction(hfsmp)) != 0) {
* Don't need truncate lock since a symlink is treated as a system file.
*/
error = hfs_truncate(vp, len, IO_NOZEROFILL, 1, ap->a_context);
- if (error)
- goto out; /* XXX need to remove link */
+
+ /* On errors, remove the symlink file */
+ if (error) {
+ /*
+ * End the transaction so we don't re-take the cnode lock
+ * below while inside a transaction (lock order violation).
+ */
+ hfs_end_transaction(hfsmp);
+
+ /* hfs_removefile() requires holding the truncate lock */
+ hfs_unlock(cp);
+ hfs_lock_truncate(cp, TRUE);
+ hfs_lock(cp, HFS_FORCE_LOCK);
+
+ if (hfs_start_transaction(hfsmp) != 0) {
+ started_tr = 0;
+ hfs_unlock_truncate(cp, TRUE);
+ goto out;
+ }
+
+ (void) hfs_removefile(dvp, vp, ap->a_cnp, 0, 0, 0);
+ hfs_unlock_truncate(cp, TRUE);
+ goto out;
+ }
/* Write the link to disk */
- bp = buf_getblk(vp, (daddr64_t)0, roundup((int)fp->ff_size, VTOHFS(vp)->hfs_phys_block_size),
+ bp = buf_getblk(vp, (daddr64_t)0, roundup((int)fp->ff_size, hfsmp->hfs_physical_block_size),
0, 0, BLK_META);
if (hfsmp->jnl) {
journal_modify_block_start(hfsmp->jnl, bp);
bcopy(ap->a_target, datap, len);
if (hfsmp->jnl) {
- journal_modify_block_end(hfsmp->jnl, bp);
+ journal_modify_block_end(hfsmp->jnl, bp, NULL, NULL);
} else {
buf_bawrite(bp);
}
out:
if (started_tr)
hfs_end_transaction(hfsmp);
- if (vp) {
- hfs_unlock(VTOC(vp));
+ if ((cp != NULL) && (vp != NULL)) {
+ hfs_unlock(cp);
+ }
+ if (error) {
+ if (vp) {
+ vnode_put(vp);
+ }
+ *vpp = NULL;
}
return (error);
}
* Each tag/index pair is tied to a unique directory hint. The hint
* contains information (filename) needed to build the catalog b-tree
* key for finding the next set of entries.
+ *
+ * If the directory is marked as deleted-but-in-use (cp->c_flag & C_DELETED),
+ * do NOT synthesize entries for "." and "..".
*/
static int
hfs_vnop_readdir(ap)
if (nfs_cookies) {
cnid_hint = (cnid_t)(uio_offset(uio) >> 32);
uio_setoffset(uio, uio_offset(uio) & 0x00000000ffffffffLL);
+ if (cnid_hint == INT_MAX) { /* searching pass the last item */
+ eofflag = 1;
+ goto out;
+ }
}
/*
- * Synthesize entries for "." and ".."
+ * Synthesize entries for "." and "..", unless the directory has
+ * been deleted, but not closed yet (lazy delete in progress).
*/
- if (offset == 0) {
+ if (offset == 0 && !(cp->c_flag & C_DELETED)) {
hfs_dotentry_t dotentry[2];
size_t uiosize;
// here and we can't service our page fault because VM is
// blocked trying to start a transaction as a result of
// trying to free up pages for our page fault. It's messy
- // but it does happen on dual-procesors that are paging
+ // but it does happen on dual-processors that are paging
// heavily (see radar 3082639 for more info). By locking
// the buffer up-front we prevent ourselves from faulting
// while holding the shared catalog file lock.
/* When called from NFS, try and resolve a cnid hint. */
if (nfs_cookies && cnid_hint != 0) {
if (cat_findname(hfsmp, cnid_hint, &localhint.dh_desc) == 0) {
- if ( localhint.dh_desc.cd_parentcnid == cp->c_cnid) {
+ if ( localhint.dh_desc.cd_parentcnid == cp->c_fileid) {
localhint.dh_index = index - 1;
localhint.dh_time = 0;
- localhint.dh_link.sle_next = 0;
+ bzero(&localhint.dh_link, sizeof(localhint.dh_link));
dirhint = &localhint; /* don't forget to release the descriptor */
} else {
cat_releasedesc(&localhint.dh_desc);
/* Get a directory hint (cnode must be locked exclusive) */
if (dirhint == NULL) {
- dirhint = hfs_getdirhint(cp, ((index - 1) & HFS_INDEX_MASK) | tag);
+ dirhint = hfs_getdirhint(cp, ((index - 1) & HFS_INDEX_MASK) | tag, 0);
/* Hide tag from catalog layer. */
dirhint->dh_index &= HFS_INDEX_MASK;
}
}
+ if (index == 0) {
+ dirhint->dh_threadhint = cp->c_dirthreadhint;
+ }
+
/* Pack the buffer with dirent entries. */
- error = cat_getdirentries(hfsmp, cp->c_entries, dirhint, uio, extended, &items);
+ error = cat_getdirentries(hfsmp, cp->c_entries, dirhint, uio, extended, &items, &eofflag);
+
+ if (index == 0 && error == 0) {
+ cp->c_dirthreadhint = dirhint->dh_threadhint;
+ }
hfs_systemfile_unlock(hfsmp, lockflags);
/* Zero length sym links are not allowed */
if (fp->ff_size == 0 || fp->ff_size > MAXPATHLEN) {
- VTOVCB(vp)->vcbFlags |= kHFS_DamagedVolume;
+ printf("hfs: zero length symlink on fileid %d\n", cp->c_fileid);
error = EINVAL;
goto exit;
}
MALLOC(fp->ff_symlinkptr, char *, fp->ff_size, M_TEMP, M_WAITOK);
error = (int)buf_meta_bread(vp, (daddr64_t)0,
- roundup((int)fp->ff_size,
- VTOHFS(vp)->hfs_phys_block_size),
+ roundup((int)fp->ff_size, VTOHFS(vp)->hfs_physical_block_size),
vfs_context_ucred(ap->a_context), &bp);
if (error) {
if (bp)
*ap->a_retval = PIPE_BUF;
break;
case _PC_CHOWN_RESTRICTED:
- *ap->a_retval = 1;
+ *ap->a_retval = 200112; /* _POSIX_CHOWN_RESTRICTED */
break;
case _PC_NO_TRUNC:
- *ap->a_retval = 0;
+ *ap->a_retval = 200112; /* _POSIX_NO_TRUNC */
break;
case _PC_NAME_CHARS_MAX:
*ap->a_retval = kHFSPlusMaxFileNameChars;
case _PC_CASE_PRESERVING:
*ap->a_retval = 1;
break;
+ case _PC_FILESIZEBITS:
+ *ap->a_retval = 64; /* number of bits to store max file size */
+ break;
default:
return (EINVAL);
}
struct cat_fork *dataforkp = NULL;
struct cat_fork *rsrcforkp = NULL;
struct cat_fork datafork;
+ struct cat_fork rsrcfork;
struct hfsmount *hfsmp;
int lockflags;
int error;
p = current_proc();
hfsmp = VTOHFS(vp);
- if (vnode_issystem(vp) && (cp->c_cnid < kHFSFirstUserCatalogNodeID)) {
+ if (((vnode_issystem(vp) && (cp->c_cnid < kHFSFirstUserCatalogNodeID))) ||
+ hfsmp->hfs_catalog_vp == NULL){
return (0);
}
if ((hfsmp->hfs_flags & HFS_READ_ONLY) || (cp->c_mode == 0)) {
dataforkp = &datafork;
}
+ /*
+ * For resource forks with delayed allocations, make sure
+ * the block count and file size match the number of blocks
+ * actually allocated to the file on disk.
+ */
+ if (rsrcforkp && (cp->c_rsrcfork->ff_unallocblocks != 0)) {
+ bcopy(rsrcforkp, &rsrcfork, sizeof(rsrcfork));
+ rsrcfork.cf_blocks = (cp->c_rsrcfork->ff_blocks - cp->c_rsrcfork->ff_unallocblocks);
+ rsrcfork.cf_size = rsrcfork.cf_blocks * HFSTOVCB(hfsmp)->blockSize;
+ rsrcforkp = &rsrcfork;
+ }
+
/*
* Lock the Catalog b-tree file.
- * A shared lock is sufficient since an update doesn't change
- * the tree and the lock on vp protects the cnode.
*/
- lockflags = hfs_systemfile_lock(hfsmp, SFL_CATALOG, HFS_SHARED_LOCK);
+ lockflags = hfs_systemfile_lock(hfsmp, SFL_CATALOG, HFS_EXCLUSIVE_LOCK);
/* XXX - waitfor is not enforced */
error = cat_update(hfsmp, &cp->c_desc, &cp->c_attr, dataforkp, rsrcforkp);
/*
* Allocate a new node
+ * Note - Function does not create and return a vnode for whiteout creation.
*/
static int
hfs_makenode(struct vnode *dvp, struct vnode **vpp, struct componentname *cnp,
struct cat_desc in_desc, out_desc;
struct cat_attr attr;
struct timeval tv;
- cat_cookie_t cookie;
int lockflags;
- int error, started_tr = 0, got_cookie = 0;
+ int error, started_tr = 0;
enum vtype vnodetype;
int mode;
- if ((error = hfs_lock(VTOC(dvp), HFS_EXCLUSIVE_LOCK)))
- return (error);
dcp = VTOC(dvp);
+ if ((error = hfs_lock(dcp, HFS_EXCLUSIVE_LOCK)))
+ return (error);
+
+ dcp->c_flag |= C_DIR_MODIFICATION;
+
hfsmp = VTOHFS(dvp);
*vpp = NULL;
tvp = NULL;
out_desc.cd_flags = 0;
out_desc.cd_nameptr = NULL;
- mode = MAKEIMODE(vap->va_type, vap->va_mode);
-
- if ((mode & S_IFMT) == 0)
- mode |= S_IFREG;
- vnodetype = IFTOVT(mode);
+ vnodetype = vap->va_type;
+ if (vnodetype == VNON)
+ vnodetype = VREG;
+ mode = MAKEIMODE(vnodetype, vap->va_mode);
/* Check if were out of usable disk space. */
- if ((hfs_freeblks(hfsmp, 1) <= 0) && (suser(vfs_context_ucred(ctx), NULL) != 0)) {
+ if ((hfs_freeblks(hfsmp, 1) == 0) && (vfs_context_suser(ctx) != 0)) {
error = ENOSPC;
goto exit;
}
/* Setup the default attributes */
bzero(&attr, sizeof(attr));
attr.ca_mode = mode;
- attr.ca_nlink = vnodetype == VDIR ? 2 : 1;
- attr.ca_mtime = tv.tv_sec;
- if ((VTOVCB(dvp)->vcbSigWord == kHFSSigWord) && gTimeZone.tz_dsttime) {
- attr.ca_mtime += 3600; /* Same as what hfs_update does */
+ attr.ca_linkcount = 1;
+ if (VATTR_IS_ACTIVE(vap, va_rdev)) {
+ attr.ca_rdev = vap->va_rdev;
}
- attr.ca_atime = attr.ca_ctime = attr.ca_itime = attr.ca_mtime;
+ if (VATTR_IS_ACTIVE(vap, va_create_time)) {
+ VATTR_SET_SUPPORTED(vap, va_create_time);
+ attr.ca_itime = vap->va_create_time.tv_sec;
+ } else {
+ attr.ca_itime = tv.tv_sec;
+ }
+ if ((hfsmp->hfs_flags & HFS_STANDARD) && gTimeZone.tz_dsttime) {
+ attr.ca_itime += 3600; /* Same as what hfs_update does */
+ }
+ attr.ca_atime = attr.ca_ctime = attr.ca_mtime = attr.ca_itime;
attr.ca_atimeondisk = attr.ca_atime;
+ if (VATTR_IS_ACTIVE(vap, va_flags)) {
+ VATTR_SET_SUPPORTED(vap, va_flags);
+ attr.ca_flags = vap->va_flags;
+ }
+
+ /*
+ * HFS+ only: all files get ThreadExists
+ * HFSX only: dirs get HasFolderCount
+ */
+ if (!(hfsmp->hfs_flags & HFS_STANDARD)) {
+ if (vnodetype == VDIR) {
+ if (hfsmp->hfs_flags & HFS_FOLDERCOUNT)
+ attr.ca_recflags = kHFSHasFolderCountMask;
+ } else {
+ attr.ca_recflags = kHFSThreadExistsMask;
+ }
+ }
attr.ca_uid = vap->va_uid;
attr.ca_gid = vap->va_gid;
attr.ca_flags |= UF_OPAQUE;
/* Setup the descriptor */
- in_desc.cd_nameptr = cnp->cn_nameptr;
+ in_desc.cd_nameptr = (const u_int8_t *)cnp->cn_nameptr;
in_desc.cd_namelen = cnp->cn_namelen;
- in_desc.cd_parentcnid = dcp->c_cnid;
+ in_desc.cd_parentcnid = dcp->c_fileid;
in_desc.cd_flags = S_ISDIR(mode) ? CD_ISDIR : 0;
in_desc.cd_hint = dcp->c_childhint;
in_desc.cd_encoding = 0;
}
started_tr = 1;
- /*
- * Reserve some space in the Catalog file.
- *
- * (we also add CAT_DELETE since our getnewvnode
- * request can cause an hfs_inactive call to
- * delete an unlinked file)
- */
- if ((error = cat_preflight(hfsmp, CAT_CREATE | CAT_DELETE, &cookie, 0))) {
+ // have to also lock the attribute file because cat_create() needs
+ // to check that any fileID it wants to use does not have orphaned
+ // attributes in it.
+ lockflags = hfs_systemfile_lock(hfsmp, SFL_CATALOG | SFL_ATTRIBUTE, HFS_EXCLUSIVE_LOCK);
+
+ /* Reserve some space in the Catalog file. */
+ if ((error = cat_preflight(hfsmp, CAT_CREATE, NULL, 0))) {
+ hfs_systemfile_unlock(hfsmp, lockflags);
goto exit;
}
- got_cookie = 1;
-
- lockflags = hfs_systemfile_lock(hfsmp, SFL_CATALOG, HFS_EXCLUSIVE_LOCK);
error = cat_create(hfsmp, &in_desc, &attr, &out_desc);
if (error == 0) {
/* Update the parent directory */
dcp->c_childhint = out_desc.cd_hint; /* Cache directory's location */
- dcp->c_nlink++;
dcp->c_entries++;
+ if (vnodetype == VDIR) {
+ INC_FOLDERCOUNT(hfsmp, dcp->c_attr);
+ }
+ dcp->c_dirchangecnt++;
dcp->c_ctime = tv.tv_sec;
dcp->c_mtime = tv.tv_sec;
(void) cat_update(hfsmp, &dcp->c_desc, &dcp->c_attr, NULL, NULL);
goto exit;
/* Invalidate negative cache entries in the directory */
- if (hfsmp->hfs_flags & HFS_CASE_SENSITIVE)
+ if (dcp->c_flag & C_NEG_ENTRIES) {
cache_purge_negatives(dvp);
+ dcp->c_flag &= ~C_NEG_ENTRIES;
+ }
if (vnodetype == VDIR) {
HFS_KNOTE(dvp, NOTE_WRITE | NOTE_LINK);
started_tr = 0;
}
+ /* Do not create vnode for whiteouts */
+ if (S_ISWHT(mode)) {
+ goto exit;
+ }
+
/*
* Create a vnode for the object just created.
*
* The cnode is locked on successful return.
*/
- error = hfs_getnewvnode(hfsmp, dvp, cnp, &out_desc, 0, &attr, NULL, &tvp);
+ error = hfs_getnewvnode(hfsmp, dvp, cnp, &out_desc, GNV_CREATE, &attr, NULL, &tvp);
if (error)
goto exit;
- // XXXdbg
- //cache_enter(dvp, tvp, cnp);
-
cp = VTOC(tvp);
#if QUOTA
/*
* fall through to the rmdir we actually have
* accounted for the inode
*/
- if (vfs_flags(HFSTOVFS(hfsmp)) & MNT_QUOTA) {
+ if (hfsmp->hfs_flags & HFS_QUOTAS) {
if ((error = hfs_getinoquota(cp)) ||
(error = hfs_chkiq(cp, 1, vfs_context_ucred(ctx), FORCE))) {
hfs_unlock(cp);
hfs_lock_truncate(cp, TRUE);
hfs_lock(cp, HFS_FORCE_LOCK);
- (void) hfs_removefile(dvp, tvp, cnp, 0, 0);
- hfs_unlock_truncate(cp);
+ (void) hfs_removefile(dvp, tvp, cnp, 0, 0, 0);
+ hfs_unlock_truncate(cp, TRUE);
}
/*
* we successfully allocated a new vnode, but
}
#endif /* QUOTA */
- /* Remember if any ACL data was set. */
- if (VATTR_IS_ACTIVE(vap, va_acl) &&
- (vap->va_acl != NULL)) {
- cp->c_attr.ca_recflags |= kHFSHasSecurityMask;
- cp->c_touch_chgtime = TRUE;
- (void) hfs_update(tvp, TRUE);
- }
*vpp = tvp;
exit:
cat_releasedesc(&out_desc);
- if (got_cookie) {
- cat_postflight(hfsmp, &cookie, 0);
- }
/*
* Check if a file is located in the "Cleanup At Startup"
* directory. If it is then tag it as NODUMP so that we
*/
if ((error == 0) && dvp && (vnodetype == VREG) &&
(dcp->c_desc.cd_nameptr != NULL) &&
- (strcmp(dcp->c_desc.cd_nameptr, CARBON_TEMP_DIR_NAME) == 0)) {
+ (strncmp((const char *)dcp->c_desc.cd_nameptr,
+ CARBON_TEMP_DIR_NAME,
+ sizeof(CARBON_TEMP_DIR_NAME)) == 0)) {
struct vnode *ddvp;
+ dcp->c_flag &= ~C_DIR_MODIFICATION;
+ wakeup((caddr_t)&dcp->c_flag);
+
hfs_unlock(dcp);
dvp = NULL;
if (VTOC(ddvp)->c_desc.cd_nameptr) {
uid_t uid;
- uid = strtoul(VTOC(ddvp)->c_desc.cd_nameptr, 0, 0);
+ uid = strtoul((const char *)VTOC(ddvp)->c_desc.cd_nameptr, 0, 0);
if ((uid == cp->c_uid) ||
(uid == vfs_context_ucred(ctx)->cr_uid)) {
cp->c_flags |= UF_NODUMP;
}
}
if (dvp) {
+ dcp->c_flag &= ~C_DIR_MODIFICATION;
+ wakeup((caddr_t)&dcp->c_flag);
+
hfs_unlock(dcp);
}
if (error == 0 && cp != NULL) {
/*
- * WARNING - assumes caller has cnode lock.
+ * Return a referenced vnode for the resource fork
+ *
+ * cnode for vnode vp must already be locked.
+ *
+ * can_drop_lock is true if its safe to temporally drop/re-acquire the cnode lock
*/
__private_extern__
int
-hfs_vgetrsrc(struct hfsmount *hfsmp, struct vnode *vp, struct vnode **rvpp, __unused struct proc *p)
+hfs_vgetrsrc(struct hfsmount *hfsmp, struct vnode *vp, struct vnode **rvpp, int can_drop_lock)
{
struct vnode *rvp;
+ struct vnode *dvp = NULLVP;
struct cnode *cp = VTOC(vp);
int error;
int vid;
+restart:
+ /* Attempt to use exising vnode */
if ((rvp = cp->c_rsrc_vp)) {
vid = vnode_vid(rvp);
- /* Use exising vnode */
+ /*
+ * It is not safe to hold the cnode lock when calling vnode_getwithvid()
+ * for the alternate fork -- vnode_getwithvid() could deadlock waiting
+ * for a VL_WANTTERM while another thread has an iocount on the alternate
+ * fork vnode and is attempting to acquire the common cnode lock.
+ *
+ * But it's also not safe to drop the cnode lock when we're holding
+ * multiple cnode locks, like during a hfs_removefile() operation
+ * since we could lock out of order when re-acquiring the cnode lock.
+ *
+ * So we can only drop the lock here if its safe to drop it -- which is
+ * most of the time with the exception being hfs_removefile().
+ */
+ if (can_drop_lock)
+ hfs_unlock(cp);
+
error = vnode_getwithvid(rvp, vid);
+
+ if (can_drop_lock) {
+ (void) hfs_lock(cp, HFS_FORCE_LOCK);
+ /*
+ * When our lock was relinquished, the resource fork
+ * could have been recycled. Check for this and try
+ * again.
+ */
+ if (error == ENOENT)
+ goto restart;
+ }
if (error) {
- char * name = VTOC(vp)->c_desc.cd_nameptr;
+ const char * name = (const char *)VTOC(vp)->c_desc.cd_nameptr;
if (name)
- printf("hfs_vgetrsrc: couldn't get"
- " resource fork for %s\n", name);
+ printf("hfs_vgetrsrc: couldn't get resource"
+ " fork for %s, err %d\n", name, error);
return (error);
}
} else {
struct componentname cn;
int lockflags;
+ /*
+ * Make sure cnode lock is exclusive, if not upgrade it.
+ *
+ * We assume that we were called from a read-only VNOP (getattr)
+ * and that its safe to have the cnode lock dropped and reacquired.
+ */
+ if (cp->c_lockowner != current_thread()) {
+ if (!can_drop_lock)
+ return (EINVAL);
+ /*
+ * If the upgrade fails we loose the lock and
+ * have to take the exclusive lock on our own.
+ */
+ if (lck_rw_lock_shared_to_exclusive(&cp->c_rwlock) == FALSE)
+ lck_rw_lock_exclusive(&cp->c_rwlock);
+ cp->c_lockowner = current_thread();
+ }
+
lockflags = hfs_systemfile_lock(hfsmp, SFL_CATALOG, HFS_SHARED_LOCK);
/* Get resource fork data */
cn.cn_nameptr = cn.cn_pnbuf;
cn.cn_hash = 0;
cn.cn_consume = 0;
- cn.cn_namelen = sprintf(cn.cn_nameptr, "%s%s", cp->c_desc.cd_nameptr, _PATH_RSRCFORKSPEC);
+ cn.cn_namelen = snprintf(cn.cn_nameptr, MAXPATHLEN,
+ "%s%s", cp->c_desc.cd_nameptr,
+ _PATH_RSRCFORKSPEC);
}
- error = hfs_getnewvnode(hfsmp, vnode_parent(vp), cn.cn_pnbuf ? &cn : NULL,
- &cp->c_desc, 2, &cp->c_attr, &rsrcfork, &rvp);
+ dvp = vnode_getparent(vp);
+ error = hfs_getnewvnode(hfsmp, dvp, cn.cn_pnbuf ? &cn : NULL,
+ &cp->c_desc, GNV_WANTRSRC | GNV_SKIPLOCK, &cp->c_attr,
+ &rsrcfork, &rvp);
+ if (dvp)
+ vnode_put(dvp);
if (cn.cn_pnbuf)
FREE_ZONE(cn.cn_pnbuf, cn.cn_pnlen, M_NAMEI);
if (error)
}
/* poll(2) semantics dictate always saying there is data */
- kn->kn_data = (!(kn->kn_flags & EV_POLL)) ?
- VTOF(vp)->ff_size - kn->kn_fp->f_fglob->fg_offset : 1;
+ if (!(kn->kn_flags & EV_POLL)) {
+ off_t amount;
+
+ amount = VTOF(vp)->ff_size - kn->kn_fp->f_fglob->fg_offset;
+ if (amount > (off_t)INTPTR_MAX)
+ kn->kn_data = INTPTR_MAX;
+ else if (amount < (off_t)INTPTR_MIN)
+ kn->kn_data = INTPTR_MIN;
+ else
+ kn->kn_data = (intptr_t)amount;
+ } else {
+ kn->kn_data = 1;
+ }
if (dropvp)
vnode_put(vp);
static int
filt_hfswrite(struct knote *kn, long hint)
{
- int dropvp = 0;
-
+ struct vnode *vp = (struct vnode *)kn->kn_hook;
+
if (hint == 0) {
- if ((vnode_getwithvid(kn->kn_hook, kn->kn_hookid) != 0)) {
+ if ((vnode_getwithvid(vp, kn->kn_hookid) != 0)) {
hint = NOTE_REVOKE;
} else
- vnode_put(kn->kn_hook);
+ vnode_put(vp);
}
if (hint == NOTE_REVOKE) {
/*
static int
filt_hfsvnode(struct knote *kn, long hint)
{
+ struct vnode *vp = (struct vnode *)kn->kn_hook;
if (hint == 0) {
- if ((vnode_getwithvid(kn->kn_hook, kn->kn_hookid) != 0)) {
+ if ((vnode_getwithvid(vp, kn->kn_hookid) != 0)) {
hint = NOTE_REVOKE;
} else
- vnode_put(kn->kn_hook);
+ vnode_put(vp);
}
if (kn->kn_sfflags & hint)
kn->kn_fflags |= hint;
struct vnode *a_vp;
uintptr_t ident;
vfs_context_t a_context;
- } */ *ap;
+ } */__unused *ap;
{
int result;
vfs_context_t a_context;
} */ *ap;
{
- extern int (**fifo_vnodeop_p)(void *);
-
/*
* Set access flag.
*/
vfs_context_t a_context;
} */ *ap;
{
- extern int (**fifo_vnodeop_p)(void *);
-
/*
* Set update and change flags.
*/
vfs_context_t a_context;
} */ *ap;
{
- extern int (**fifo_vnodeop_p)(void *);
struct vnode *vp = ap->a_vp;
struct cnode *cp;
hfsfifo_kqfilt_add(ap)
struct vnop_kqfilt_add_args *ap;
{
- extern int (**fifo_vnodeop_p)(void *);
int error;
error = VOCALL(fifo_vnodeop_p, VOFFSET(vnop_kqfilt_add), ap);
hfsfifo_kqfilt_remove(ap)
struct vnop_kqfilt_remove_args *ap;
{
- extern int (**fifo_vnodeop_p)(void *);
int error;
error = VOCALL(fifo_vnodeop_p, VOFFSET(vnop_kqfilt_remove), ap);
return (error);
}
-/*****************************************************************************
-*
-* VOP Tables
-*
-*****************************************************************************/
-int hfs_vnop_readdirattr(struct vnop_readdirattr_args *); /* in hfs_attrlist.c */
-int hfs_vnop_inactive(struct vnop_inactive_args *); /* in hfs_cnode.c */
-int hfs_vnop_reclaim(struct vnop_reclaim_args *); /* in hfs_cnode.c */
-int hfs_vnop_link(struct vnop_link_args *); /* in hfs_link.c */
-int hfs_vnop_lookup(struct vnop_lookup_args *); /* in hfs_lookup.c */
-int hfs_vnop_search(struct vnop_searchfs_args *); /* in hfs_search.c */
-
-int hfs_vnop_read(struct vnop_read_args *); /* in hfs_readwrite.c */
-int hfs_vnop_write(struct vnop_write_args *); /* in hfs_readwrite.c */
-int hfs_vnop_ioctl(struct vnop_ioctl_args *); /* in hfs_readwrite.c */
-int hfs_vnop_select(struct vnop_select_args *); /* in hfs_readwrite.c */
-int hfs_vnop_strategy(struct vnop_strategy_args *); /* in hfs_readwrite.c */
-int hfs_vnop_allocate(struct vnop_allocate_args *); /* in hfs_readwrite.c */
-int hfs_vnop_pagein(struct vnop_pagein_args *); /* in hfs_readwrite.c */
-int hfs_vnop_pageout(struct vnop_pageout_args *); /* in hfs_readwrite.c */
-int hfs_vnop_bwrite(struct vnop_bwrite_args *); /* in hfs_readwrite.c */
-int hfs_vnop_blktooff(struct vnop_blktooff_args *); /* in hfs_readwrite.c */
-int hfs_vnop_offtoblk(struct vnop_offtoblk_args *); /* in hfs_readwrite.c */
-int hfs_vnop_blockmap(struct vnop_blockmap_args *); /* in hfs_readwrite.c */
-int hfs_vnop_getxattr(struct vnop_getxattr_args *); /* in hfs_xattr.c */
-int hfs_vnop_setxattr(struct vnop_setxattr_args *); /* in hfs_xattr.c */
-int hfs_vnop_removexattr(struct vnop_removexattr_args *); /* in hfs_xattr.c */
-int hfs_vnop_listxattr(struct vnop_listxattr_args *); /* in hfs_xattr.c */
+
+static int
+hfs_vnop_whiteout(ap)
+ struct vnop_whiteout_args /* {
+ struct vnode *a_dvp;
+ struct componentname *a_cnp;
+ int a_flags;
+ vfs_context_t a_context;
+ } */ *ap;
+{
+ int error = 0;
+ struct vnode *vp = NULL;
+ struct vnode_attr va;
+ struct vnop_lookup_args lookup_args;
+ struct vnop_remove_args remove_args;
+ struct hfsmount *hfsmp;
+
+ hfsmp = VTOHFS(ap->a_dvp);
+ if (hfsmp->hfs_flags & HFS_STANDARD) {
+ error = ENOTSUP;
+ goto exit;
+ }
+
+ switch (ap->a_flags) {
+ case LOOKUP:
+ error = 0;
+ break;
+
+ case CREATE:
+ VATTR_INIT(&va);
+ VATTR_SET(&va, va_type, VREG);
+ VATTR_SET(&va, va_mode, S_IFWHT);
+ VATTR_SET(&va, va_uid, 0);
+ VATTR_SET(&va, va_gid, 0);
+
+ error = hfs_makenode(ap->a_dvp, &vp, ap->a_cnp, &va, ap->a_context);
+ /* No need to release the vnode as no vnode is created for whiteouts */
+ break;
+
+ case DELETE:
+ lookup_args.a_dvp = ap->a_dvp;
+ lookup_args.a_vpp = &vp;
+ lookup_args.a_cnp = ap->a_cnp;
+ lookup_args.a_context = ap->a_context;
+
+ error = hfs_vnop_lookup(&lookup_args);
+ if (error) {
+ break;
+ }
+
+ remove_args.a_dvp = ap->a_dvp;
+ remove_args.a_vp = vp;
+ remove_args.a_cnp = ap->a_cnp;
+ remove_args.a_flags = 0;
+ remove_args.a_context = ap->a_context;
+
+ error = hfs_vnop_remove(&remove_args);
+ vnode_put(vp);
+ break;
+
+ default:
+ panic("hfs_vnop_whiteout: unknown operation (flag = %x)\n", ap->a_flags);
+ };
+
+exit:
+ return (error);
+}
int (**hfs_vnodeop_p)(void *);
{ &vnop_setxattr_desc, (VOPFUNC)hfs_vnop_setxattr},
{ &vnop_removexattr_desc, (VOPFUNC)hfs_vnop_removexattr},
{ &vnop_listxattr_desc, (VOPFUNC)hfs_vnop_listxattr},
+ { &vnop_whiteout_desc, (VOPFUNC)hfs_vnop_whiteout},
+#if NAMEDSTREAMS
+ { &vnop_getnamedstream_desc, (VOPFUNC)hfs_vnop_getnamedstream },
+ { &vnop_makenamedstream_desc, (VOPFUNC)hfs_vnop_makenamedstream },
+ { &vnop_removenamedstream_desc, (VOPFUNC)hfs_vnop_removenamedstream },
+#endif
{ NULL, (VOPFUNC)NULL }
};
{ &vnop_pathconf_desc, (VOPFUNC)spec_pathconf }, /* pathconf */
{ &vnop_advlock_desc, (VOPFUNC)err_advlock }, /* advlock */
{ &vnop_bwrite_desc, (VOPFUNC)hfs_vnop_bwrite },
- { &vnop_devblocksize_desc, (VOPFUNC)spec_devblocksize }, /* devblocksize */
{ &vnop_pagein_desc, (VOPFUNC)hfs_vnop_pagein }, /* Pagein */
{ &vnop_pageout_desc, (VOPFUNC)hfs_vnop_pageout }, /* Pageout */
{ &vnop_copyfile_desc, (VOPFUNC)err_copyfile }, /* copyfile */
projects / apple / xnu.git / blobdiff