[apple/xnu.git] / bsd / hfs / hfs_link.c

/*
 * Copyright (c) 1999-2002 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_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 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.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */


#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/mount.h>
#include <sys/namei.h>
#include <sys/stat.h>
#include <sys/vnode.h>
#include <vfs/vfs_support.h>
#include <libkern/libkern.h>

#include "hfs.h"
#include "hfs_catalog.h"
#include "hfs_format.h"
#include "hfs_endian.h"


/*
 * Create a new indirect link
 *
 * An indirect link is a reference to a data node.  The only useable
 * fields in the link are the link number, parentID, name and text
 * encoding.  All other catalog fields are ignored.
 */
static int
createindirectlink(struct hfsmount *hfsmp, u_int32_t linknum,
			u_int32_t linkparid, char *linkName, cnid_t *linkcnid)
{
	struct FndrFileInfo *fip;
	struct cat_desc desc;
	struct cat_attr attr;
	int result;

	/* Setup the descriptor */
	bzero(&desc, sizeof(desc));
	desc.cd_nameptr = linkName;
	desc.cd_namelen = strlen(linkName);
	desc.cd_parentcnid = linkparid;

	/* Setup the default attributes */
	bzero(&attr, sizeof(attr));
	
	/* links are matched to data nodes by link ID and to volumes by create date */
	attr.ca_rdev = linknum;  /* note: cat backend overloads ca_rdev to be the linknum when nlink = 0 */
	attr.ca_itime = HFSTOVCB(hfsmp)->vcbCrDate;
	attr.ca_mode = S_IFREG;

	fip = (struct FndrFileInfo *)&attr.ca_finderinfo;
	fip->fdType    = SWAP_BE32 (kHardLinkFileType);	/* 'hlnk' */
	fip->fdCreator = SWAP_BE32 (kHFSPlusCreator);	/* 'hfs+' */
	fip->fdFlags   = SWAP_BE16 (kHasBeenInited);

	hfs_global_shared_lock_acquire(hfsmp);
	if (hfsmp->jnl) {
	    if (journal_start_transaction(hfsmp->jnl) != 0) {
			hfs_global_shared_lock_release(hfsmp);
			return EINVAL;
	    }
	}

	/* Create the indirect link directly in the catalog */
	result = cat_create(hfsmp, &desc, &attr, NULL);

	if (result == 0 && linkcnid != NULL)
		*linkcnid = attr.ca_fileid;

	if (hfsmp->jnl) {
	    journal_end_transaction(hfsmp->jnl);
	}
	hfs_global_shared_lock_release(hfsmp);

	return (result);
}


/*
 * 2 locks are needed (dvp and vp)
 * also need catalog lock
 *
 * caller's responsibility:
 *		componentname cleanup
 *		unlocking dvp and vp
 */
static int
hfs_makelink(struct hfsmount *hfsmp, struct cnode *cp, struct cnode *dcp,
		struct componentname *cnp)
{
	struct proc *p = cnp->cn_proc;
	u_int32_t indnodeno = 0;
	char inodename[32];
	struct cat_desc to_desc;
	int newlink = 0;
	int retval;


	/* We don't allow link nodes in our Private Meta Data folder! */
	if (dcp->c_fileid == hfsmp->hfs_privdir_desc.cd_cnid)
		return (EPERM);

	if (hfs_freeblks(hfsmp, 0) == 0)
		return (ENOSPC);

	/* Lock catalog b-tree */
	retval = hfs_metafilelocking(hfsmp, kHFSCatalogFileID, LK_EXCLUSIVE, p);
	if (retval) {
	    return retval;
	}

	/*
	 * If this is a new hardlink then we need to create the data
	 * node (inode) and replace the original file with a link node.
	 */
	if (cp->c_nlink == 2 && (cp->c_flag & C_HARDLINK) == 0) {
		newlink = 1;
		bzero(&to_desc, sizeof(to_desc));
		to_desc.cd_parentcnid = hfsmp->hfs_privdir_desc.cd_cnid;
		to_desc.cd_cnid = cp->c_fileid;

		do {
			/* get a unique indirect node number */
			indnodeno = ((random() & 0x3fffffff) + 100);
			MAKE_INODE_NAME(inodename, indnodeno);

			/* move source file to data node directory */
			to_desc.cd_nameptr = inodename;
			to_desc.cd_namelen = strlen(inodename);
		
			retval = cat_rename(hfsmp, &cp->c_desc, &hfsmp->hfs_privdir_desc,
					&to_desc, NULL);

		} while (retval == EEXIST);
		if (retval)
			goto out;

		/* Replace source file with link node */
		retval = createindirectlink(hfsmp, indnodeno, cp->c_parentcnid,
				cp->c_desc.cd_nameptr, &cp->c_desc.cd_cnid);
		if (retval) {
			/* put it source file back */
		// XXXdbg
		#if 1
		    {
		    	int err;
				err = cat_rename(hfsmp, &to_desc, &dcp->c_desc, &cp->c_desc, NULL);
				if (err)
					panic("hfs_makelink: error %d from cat_rename backout 1", err);
		    }
		#else
			(void) cat_rename(hfsmp, &to_desc, &dcp->c_desc, &cp->c_desc, NULL);
		#endif
			goto out;
		}
		cp->c_rdev = indnodeno;
	} else {
		indnodeno = cp->c_rdev;
	}

	/*
	 * Create a catalog entry for the new link (parentID + name).
	 */
	retval = createindirectlink(hfsmp, indnodeno, dcp->c_fileid, cnp->cn_nameptr, NULL);
	if (retval && newlink) {
		/* Get rid of new link */
		(void) cat_delete(hfsmp, &cp->c_desc, &cp->c_attr);

		/* Put the source file back */
	// XXXdbg
	#if 1
		{
			int err;
			err = cat_rename(hfsmp, &to_desc, &dcp->c_desc, &cp->c_desc, NULL);
			if (err)
				panic("hfs_makelink: error %d from cat_rename backout 2", err);
		}
	#else
		(void) cat_rename(hfsmp, &to_desc, &dcp->c_desc, &cp->c_desc, NULL);
	#endif
		goto out;
	}

	/*
	 * Finally, if this is a new hardlink then:
	 *  - update HFS Private Data dir
	 *  - mark the cnode as a hard link
	 */
	if (newlink) {
		hfsmp->hfs_privdir_attr.ca_entries++;
		(void)cat_update(hfsmp, &hfsmp->hfs_privdir_desc,
			&hfsmp->hfs_privdir_attr, NULL, NULL);
		hfs_volupdate(hfsmp, VOL_MKFILE, 0);
		cp->c_flag |= (C_CHANGE | C_HARDLINK);
	}

out:
	/* Unlock catalog b-tree */
	(void) hfs_metafilelocking(hfsmp, kHFSCatalogFileID, LK_RELEASE, p);

	return (retval);
}


/*
 * link vnode call
#% link		vp	U U U
#% link		tdvp	L U U
#
 vop_link {
     IN WILLRELE struct vnode *vp;
     IN struct vnode *targetPar_vp;
     IN struct componentname *cnp;

     */
int
hfs_link(ap)
	struct vop_link_args /* {
		struct vnode *a_vp;
		struct vnode *a_tdvp;
		struct componentname *a_cnp;
	} */ *ap;
{
	struct hfsmount *hfsmp;
	struct vnode *vp = ap->a_vp;
	struct vnode *tdvp = ap->a_tdvp;
	struct componentname *cnp = ap->a_cnp;
	struct proc *p = cnp->cn_proc;
	struct cnode *cp;
	struct cnode *tdcp;
	struct timeval tv;
	int error;

	hfsmp = VTOHFS(vp);
	
#if HFS_DIAGNOSTIC
	if ((cnp->cn_flags & HASBUF) == 0)
		panic("hfs_link: no name");
#endif
	if (tdvp->v_mount != vp->v_mount) {
		VOP_ABORTOP(tdvp, cnp);
		error = EXDEV;
		goto out2;
	}
	if (VTOVCB(tdvp)->vcbSigWord != kHFSPlusSigWord)
		return err_link(ap);	/* hfs disks don't support hard links */
	
	if (hfsmp->hfs_private_metadata_dir == 0)
		return err_link(ap);	/* no private metadata dir, no links possible */

	if (tdvp != vp && (error = vn_lock(vp, LK_EXCLUSIVE, p))) {
		VOP_ABORTOP(tdvp, cnp);
		goto out2;
	}
	cp = VTOC(vp);
	tdcp = VTOC(tdvp);

	if (cp->c_nlink >= HFS_LINK_MAX) {
		VOP_ABORTOP(tdvp, cnp);
		error = EMLINK;
		goto out1;
	}
	if (cp->c_flags & (IMMUTABLE | APPEND)) {
		VOP_ABORTOP(tdvp, cnp);
		error = EPERM;
		goto out1;
	}
	if (vp->v_type == VBLK || vp->v_type == VCHR) {
		VOP_ABORTOP(tdvp, cnp);
		error = EINVAL;  /* cannot link to a special file */
		goto out1;
	}

	hfs_global_shared_lock_acquire(hfsmp);
	if (hfsmp->jnl) {
	    if (journal_start_transaction(hfsmp->jnl) != 0) {
			hfs_global_shared_lock_release(hfsmp);
			return EINVAL;
	    }
	}

	cp->c_nlink++;
	cp->c_flag |= C_CHANGE;
	tv = time;

	error = VOP_UPDATE(vp, &tv, &tv, 1);
	if (!error) {
		error = hfs_makelink(hfsmp, cp, tdcp, cnp);
	}
	if (error) {
		cp->c_nlink--;
		cp->c_flag |= C_CHANGE;
	} else {
		/* Update the target directory and volume stats */
		tdcp->c_nlink++;
		tdcp->c_entries++;
		tdcp->c_flag |= C_CHANGE | C_UPDATE;
		tv = time;
		(void) VOP_UPDATE(tdvp, &tv, &tv, 0);

		hfs_volupdate(hfsmp, VOL_MKFILE,
			(tdcp->c_cnid == kHFSRootFolderID));
	}

	// XXXdbg - need to do this here as well because cp could have changed
	error = VOP_UPDATE(vp, &tv, &tv, 1);

	FREE_ZONE(cnp->cn_pnbuf, cnp->cn_pnlen, M_NAMEI);

	if (hfsmp->jnl) {
	    journal_end_transaction(hfsmp->jnl);
	}
	hfs_global_shared_lock_release(hfsmp);

out1:
	if (tdvp != vp)
		VOP_UNLOCK(vp, 0, p);
out2:
	vput(tdvp);
	return (error);
}
Commit	Line	Data
1c79356b	1	/*
9bccf70c	2	* Copyright (c) 1999-2002 Apple Computer, Inc. All rights reserved.
1c79356b A	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	6	* The contents of this file constitute Original Code as defined in and
	7	* are subject to the Apple Public Source License Version 1.1 (the
	8	* "License"). You may not use this file except in compliance with the
	9	* License. Please obtain a copy of the License at
	10	* http://www.apple.com/publicsource and read it before using this file.
	11	*
	12	* This Original Code and all software distributed under the License are
	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	17	* License for the specific language governing rights and limitations
	18	* under the License.
	19	*
	20	* @APPLE_LICENSE_HEADER_END@
	21	*/
	22
1c79356b A	23
	24	#include <sys/systm.h>
	25	#include <sys/kernel.h>
	26	#include <sys/malloc.h>
9bccf70c	27	#include <sys/mount.h>
1c79356b A	28	#include <sys/namei.h>
	29	#include <sys/stat.h>
	30	#include <sys/vnode.h>
	31	#include <vfs/vfs_support.h>
	32	#include <libkern/libkern.h>
	33
	34	#include "hfs.h"
9bccf70c A	35	#include "hfs_catalog.h"
	36	#include "hfs_format.h"
	37	#include "hfs_endian.h"
1c79356b A	38
	39
	40	/*
	41	* Create a new indirect link
	42	*
9bccf70c A	43	* An indirect link is a reference to a data node. The only useable
	44	* fields in the link are the link number, parentID, name and text
	45	* encoding. All other catalog fields are ignored.
1c79356b A	46	*/
1c79356b A	47	static int
9bccf70c A	48	createindirectlink(struct hfsmount *hfsmp, u_int32_t linknum,
9bccf70c A	49	u_int32_t linkparid, char linkName, cnid_t linkcnid)
1c79356b	50	{
9bccf70c A	51	struct FndrFileInfo *fip;
	52	struct cat_desc desc;
	53	struct cat_attr attr;
1c79356b A	54	int result;
1c79356b A	55
9bccf70c A	56	/* Setup the descriptor */
	57	bzero(&desc, sizeof(desc));
	58	desc.cd_nameptr = linkName;
	59	desc.cd_namelen = strlen(linkName);
	60	desc.cd_parentcnid = linkparid;
1c79356b	61
9bccf70c A	62	/* Setup the default attributes */
	63	bzero(&attr, sizeof(attr));
	64
	65	/* links are matched to data nodes by link ID and to volumes by create date */
	66	attr.ca_rdev = linknum; /* note: cat backend overloads ca_rdev to be the linknum when nlink = 0 */
	67	attr.ca_itime = HFSTOVCB(hfsmp)->vcbCrDate;
	68	attr.ca_mode = S_IFREG;
1c79356b	69
9bccf70c A	70	fip = (struct FndrFileInfo *)&attr.ca_finderinfo;
	71	fip->fdType = SWAP_BE32 (kHardLinkFileType); /* 'hlnk' */
	72	fip->fdCreator = SWAP_BE32 (kHFSPlusCreator); /* 'hfs+' */
	73	fip->fdFlags = SWAP_BE16 (kHasBeenInited);
1c79356b	74
b4c24cb9 A	75	hfs_global_shared_lock_acquire(hfsmp);
	76	if (hfsmp->jnl) {
	77	if (journal_start_transaction(hfsmp->jnl) != 0) {
	78	hfs_global_shared_lock_release(hfsmp);
	79	return EINVAL;
	80	}
	81	}
	82
9bccf70c A	83	/* Create the indirect link directly in the catalog */
9bccf70c A	84	result = cat_create(hfsmp, &desc, &attr, NULL);
1c79356b	85
b4c24cb9	86	if (result == 0 && linkcnid != NULL)
9bccf70c	87	*linkcnid = attr.ca_fileid;
1c79356b	88
b4c24cb9 A	89	if (hfsmp->jnl) {
	90	journal_end_transaction(hfsmp->jnl);
	91	}
	92	hfs_global_shared_lock_release(hfsmp);
	93
1c79356b A	94	return (result);
	95	}
	96
	97
	98	/*
9bccf70c	99	* 2 locks are needed (dvp and vp)
1c79356b A	100	* also need catalog lock
	101	*
	102	* caller's responsibility:
	103	* componentname cleanup
9bccf70c	104	* unlocking dvp and vp
1c79356b A	105	*/
1c79356b A	106	static int
9bccf70c A	107	hfs_makelink(struct hfsmount hfsmp, struct cnode cp, struct cnode *dcp,
9bccf70c A	108	struct componentname *cnp)
1c79356b A	109	{
1c79356b A	110	struct proc *p = cnp->cn_proc;
1c79356b A	111	u_int32_t indnodeno = 0;
1c79356b A	112	char inodename[32];
9bccf70c A	113	struct cat_desc to_desc;
9bccf70c A	114	int newlink = 0;
1c79356b A	115	int retval;
1c79356b A	116
1c79356b A	117
1c79356b A	118	/* We don't allow link nodes in our Private Meta Data folder! */
9bccf70c	119	if (dcp->c_fileid == hfsmp->hfs_privdir_desc.cd_cnid)
1c79356b A	120	return (EPERM);
1c79356b A	121
9bccf70c	122	if (hfs_freeblks(hfsmp, 0) == 0)
1c79356b A	123	return (ENOSPC);
1c79356b A	124
9bccf70c A	125	/* Lock catalog b-tree */
9bccf70c A	126	retval = hfs_metafilelocking(hfsmp, kHFSCatalogFileID, LK_EXCLUSIVE, p);
b4c24cb9 A	127	if (retval) {
	128	return retval;
	129	}
1c79356b A	130
	131	/*
	132	* If this is a new hardlink then we need to create the data
	133	* node (inode) and replace the original file with a link node.
	134	*/
9bccf70c A	135	if (cp->c_nlink == 2 && (cp->c_flag & C_HARDLINK) == 0) {
	136	newlink = 1;
	137	bzero(&to_desc, sizeof(to_desc));
	138	to_desc.cd_parentcnid = hfsmp->hfs_privdir_desc.cd_cnid;
	139	to_desc.cd_cnid = cp->c_fileid;
b4c24cb9	140
1c79356b A	141	do {
	142	/* get a unique indirect node number */
	143	indnodeno = ((random() & 0x3fffffff) + 100);
	144	MAKE_INODE_NAME(inodename, indnodeno);
	145
	146	/* move source file to data node directory */
9bccf70c A	147	to_desc.cd_nameptr = inodename;
	148	to_desc.cd_namelen = strlen(inodename);
	149
	150	retval = cat_rename(hfsmp, &cp->c_desc, &hfsmp->hfs_privdir_desc,
	151	&to_desc, NULL);
1c79356b	152
9bccf70c A	153	} while (retval == EEXIST);
	154	if (retval)
	155	goto out;
1c79356b	156
9bccf70c A	157	/* Replace source file with link node */
	158	retval = createindirectlink(hfsmp, indnodeno, cp->c_parentcnid,
	159	cp->c_desc.cd_nameptr, &cp->c_desc.cd_cnid);
1c79356b A	160	if (retval) {
1c79356b A	161	/* put it source file back */
b4c24cb9 A	162	// XXXdbg
	163	#if 1
	164	{
	165	int err;
	166	err = cat_rename(hfsmp, &to_desc, &dcp->c_desc, &cp->c_desc, NULL);
	167	if (err)
	168	panic("hfs_makelink: error %d from cat_rename backout 1", err);
	169	}
	170	#else
9bccf70c	171	(void) cat_rename(hfsmp, &to_desc, &dcp->c_desc, &cp->c_desc, NULL);
b4c24cb9	172	#endif
1c79356b A	173	goto out;
1c79356b A	174	}
9bccf70c A	175	cp->c_rdev = indnodeno;
	176	} else {
	177	indnodeno = cp->c_rdev;
	178	}
1c79356b A	179
	180	/*
	181	* Create a catalog entry for the new link (parentID + name).
	182	*/
9bccf70c A	183	retval = createindirectlink(hfsmp, indnodeno, dcp->c_fileid, cnp->cn_nameptr, NULL);
	184	if (retval && newlink) {
	185	/* Get rid of new link */
	186	(void) cat_delete(hfsmp, &cp->c_desc, &cp->c_attr);
	187
	188	/* Put the source file back */
b4c24cb9 A	189	// XXXdbg
	190	#if 1
	191	{
	192	int err;
	193	err = cat_rename(hfsmp, &to_desc, &dcp->c_desc, &cp->c_desc, NULL);
	194	if (err)
	195	panic("hfs_makelink: error %d from cat_rename backout 2", err);
	196	}
	197	#else
9bccf70c	198	(void) cat_rename(hfsmp, &to_desc, &dcp->c_desc, &cp->c_desc, NULL);
b4c24cb9	199	#endif
1c79356b A	200	goto out;
	201	}
	202
	203	/*
9bccf70c A	204	* Finally, if this is a new hardlink then:
	205	* - update HFS Private Data dir
	206	* - mark the cnode as a hard link
1c79356b	207	*/
9bccf70c A	208	if (newlink) {
	209	hfsmp->hfs_privdir_attr.ca_entries++;
	210	(void)cat_update(hfsmp, &hfsmp->hfs_privdir_desc,
	211	&hfsmp->hfs_privdir_attr, NULL, NULL);
	212	hfs_volupdate(hfsmp, VOL_MKFILE, 0);
	213	cp->c_flag \|= (C_CHANGE \| C_HARDLINK);
1c79356b A	214	}
	215
	216	out:
9bccf70c A	217	/* Unlock catalog b-tree */
9bccf70c A	218	(void) hfs_metafilelocking(hfsmp, kHFSCatalogFileID, LK_RELEASE, p);
1c79356b A	219
	220	return (retval);
	221	}
	222
	223
	224	/*
	225	* link vnode call
	226	#% link vp U U U
	227	#% link tdvp L U U
	228	#
	229	vop_link {
	230	IN WILLRELE struct vnode *vp;
	231	IN struct vnode *targetPar_vp;
	232	IN struct componentname *cnp;
	233
	234	*/
	235	int
	236	hfs_link(ap)
9bccf70c A	237	struct vop_link_args /* {
	238	struct vnode *a_vp;
	239	struct vnode *a_tdvp;
	240	struct componentname *a_cnp;
	241	} / ap;
1c79356b	242	{
b4c24cb9	243	struct hfsmount *hfsmp;
1c79356b A	244	struct vnode *vp = ap->a_vp;
	245	struct vnode *tdvp = ap->a_tdvp;
	246	struct componentname *cnp = ap->a_cnp;
	247	struct proc *p = cnp->cn_proc;
9bccf70c A	248	struct cnode *cp;
9bccf70c A	249	struct cnode *tdcp;
1c79356b A	250	struct timeval tv;
	251	int error;
	252
b4c24cb9 A	253	hfsmp = VTOHFS(vp);
b4c24cb9 A	254
1c79356b A	255	#if HFS_DIAGNOSTIC
	256	if ((cnp->cn_flags & HASBUF) == 0)
	257	panic("hfs_link: no name");
	258	#endif
	259	if (tdvp->v_mount != vp->v_mount) {
	260	VOP_ABORTOP(tdvp, cnp);
	261	error = EXDEV;
	262	goto out2;
	263	}
	264	if (VTOVCB(tdvp)->vcbSigWord != kHFSPlusSigWord)
	265	return err_link(ap); /* hfs disks don't support hard links */
	266
b4c24cb9	267	if (hfsmp->hfs_private_metadata_dir == 0)
1c79356b A	268	return err_link(ap); /* no private metadata dir, no links possible */
	269
	270	if (tdvp != vp && (error = vn_lock(vp, LK_EXCLUSIVE, p))) {
	271	VOP_ABORTOP(tdvp, cnp);
	272	goto out2;
	273	}
9bccf70c A	274	cp = VTOC(vp);
	275	tdcp = VTOC(tdvp);
	276
	277	if (cp->c_nlink >= HFS_LINK_MAX) {
1c79356b A	278	VOP_ABORTOP(tdvp, cnp);
	279	error = EMLINK;
	280	goto out1;
	281	}
9bccf70c	282	if (cp->c_flags & (IMMUTABLE \| APPEND)) {
1c79356b A	283	VOP_ABORTOP(tdvp, cnp);
	284	error = EPERM;
	285	goto out1;
	286	}
	287	if (vp->v_type == VBLK \|\| vp->v_type == VCHR) {
	288	VOP_ABORTOP(tdvp, cnp);
	289	error = EINVAL; /* cannot link to a special file */
	290	goto out1;
	291	}
	292
b4c24cb9 A	293	hfs_global_shared_lock_acquire(hfsmp);
	294	if (hfsmp->jnl) {
	295	if (journal_start_transaction(hfsmp->jnl) != 0) {
	296	hfs_global_shared_lock_release(hfsmp);
	297	return EINVAL;
	298	}
	299	}
	300
9bccf70c A	301	cp->c_nlink++;
9bccf70c A	302	cp->c_flag \|= C_CHANGE;
1c79356b	303	tv = time;
b4c24cb9	304
1c79356b	305	error = VOP_UPDATE(vp, &tv, &tv, 1);
b4c24cb9 A	306	if (!error) {
	307	error = hfs_makelink(hfsmp, cp, tdcp, cnp);
	308	}
1c79356b	309	if (error) {
9bccf70c A	310	cp->c_nlink--;
	311	cp->c_flag \|= C_CHANGE;
	312	} else {
	313	/* Update the target directory and volume stats */
	314	tdcp->c_nlink++;
	315	tdcp->c_entries++;
	316	tdcp->c_flag \|= C_CHANGE \| C_UPDATE;
	317	tv = time;
	318	(void) VOP_UPDATE(tdvp, &tv, &tv, 0);
b4c24cb9 A	319
b4c24cb9 A	320	hfs_volupdate(hfsmp, VOL_MKFILE,
9bccf70c	321	(tdcp->c_cnid == kHFSRootFolderID));
1c79356b	322	}
b4c24cb9 A	323
	324	// XXXdbg - need to do this here as well because cp could have changed
	325	error = VOP_UPDATE(vp, &tv, &tv, 1);
	326
1c79356b	327	FREE_ZONE(cnp->cn_pnbuf, cnp->cn_pnlen, M_NAMEI);
b4c24cb9 A	328
	329	if (hfsmp->jnl) {
	330	journal_end_transaction(hfsmp->jnl);
	331	}
	332	hfs_global_shared_lock_release(hfsmp);
	333
1c79356b A	334	out1:
	335	if (tdvp != vp)
	336	VOP_UNLOCK(vp, 0, p);
	337	out2:
	338	vput(tdvp);
	339	return (error);
	340	}