xnu-2050.18.24.tar.gz

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

diff --git a/bsd/hfs/hfs_cnode.c b/bsd/hfs/hfs_cnode.c
index 8703ecb9bf0a5e6f3ff9213a8291e17e5a32491d..970f2648eafc53586bee35e7893f68ddb8ae4078 100644 (file)
--- a/bsd/hfs/hfs_cnode.c
+++ b/bsd/hfs/hfs_cnode.c
@@ -1,5 +1,5 @@
 /*
 /*

- * Copyright (c) 2002-2008 Apple Inc. All rights reserved.
+ * Copyright (c) 2002-2012 Apple Inc. All rights reserved.

  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 


@@ -37,6 +37,7 @@
 #include <sys/quota.h>
 #include <sys/kdebug.h>
 #include <libkern/OSByteOrder.h>
 #include <sys/quota.h>
 #include <sys/kdebug.h>
 #include <libkern/OSByteOrder.h>

+#include <sys/buf_internal.h>

 
 #include <kern/locks.h>
 
 
 #include <kern/locks.h>
 


@@ -59,11 +60,12 @@ static void  hfs_reclaim_cnode(struct cnode *);
 static int hfs_cnode_teardown (struct vnode *vp, vfs_context_t ctx, int reclaim);
 static int hfs_isordered(struct cnode *, struct cnode *);
 
 static int hfs_cnode_teardown (struct vnode *vp, vfs_context_t ctx, int reclaim);
 static int hfs_isordered(struct cnode *, struct cnode *);
 

+extern int hfs_removefile_callback(struct buf *bp, void *hfsmp);
+

 __inline__ int hfs_checkdeleted (struct cnode *cp) {
        return ((cp->c_flag & (C_DELETED | C_NOEXISTS)) ? ENOENT : 0);  
 }
 
 __inline__ int hfs_checkdeleted (struct cnode *cp) {
        return ((cp->c_flag & (C_DELETED | C_NOEXISTS)) ? ENOENT : 0);  
 }
 

-

 /*
  * Function used by a special fcntl() that decorates a cnode/vnode that
  * indicates it is backing another filesystem, like a disk image.
 /*
  * Function used by a special fcntl() that decorates a cnode/vnode that
  * indicates it is backing another filesystem, like a disk image.


@@ -77,7 +79,7 @@ int hfs_set_backingstore (struct vnode *vp, int val) {
        int err = 0;
        
        cp = VTOC(vp);
        int err = 0;
        
        cp = VTOC(vp);

-       if (vnode_isdir(vp)) {
+       if (!vnode_isreg(vp) && !vnode_isdir(vp)) {

                return EINVAL;
        }
 
                return EINVAL;
        }
 


@@ -113,7 +115,7 @@ int hfs_is_backingstore (struct vnode *vp, int *val) {
        struct cnode *cp = NULL;
        int err = 0;
 
        struct cnode *cp = NULL;
        int err = 0;
 

-       if (!vnode_isreg(vp)) {
+       if (!vnode_isreg(vp) && !vnode_isdir(vp)) {

                *val = 0;
                return 0;
        }
                *val = 0;
                return 0;
        }


@@ -240,8 +242,35 @@ int hfs_cnode_teardown (struct vnode *vp, vfs_context_t ctx, int reclaim) {
                (!ISSET(cp->c_flag, C_NOEXISTS)) &&
                (VTOF(vp)->ff_blocks) &&
                (reclaim == 0)) {
                (!ISSET(cp->c_flag, C_NOEXISTS)) &&
                (VTOF(vp)->ff_blocks) &&
                (reclaim == 0)) {

+               /* 
+                * Note that if content protection is enabled, then this is where we will
+                * attempt to issue IOs for all dirty regions of this file.  
+                *
+                * If we're called from hfs_vnop_inactive, all this means is at the time 
+                * the logic for deciding to call this function, there were not any lingering
+                * mmap/fd references for this file.  However, there is nothing preventing the system
+                * from creating a new reference in between the time that logic was checked
+                * and we entered hfs_vnop_inactive.  As a result, the only time we can guarantee
+                * that there aren't any references is during vnop_reclaim.
+                */

                hfs_filedone(vp, ctx);
        }
                hfs_filedone(vp, ctx);
        }

+
+       /* 
+        * We're holding the cnode lock now.  Stall behind any shadow BPs that may
+        * be involved with this vnode if it is a symlink.  We don't want to allow 
+        * the blocks that we're about to release to be put back into the pool if there
+        * is pending I/O to them.
+        */
+       if (v_type == VLNK) {   
+               /* 
+                * This will block if the asynchronous journal flush is in progress.
+                * If this symlink is not being renamed over and doesn't have any open FDs,
+                * then we'll remove it from the journal's bufs below in kill_block.
+                */
+               buf_wait_for_shadow_io (vp, 0);
+       }
+

        /* 
         * Remove any directory hints or cached origins
         */
        /* 
         * Remove any directory hints or cached origins
         */


@@ -282,9 +311,44 @@ int hfs_cnode_teardown (struct vnode *vp, vfs_context_t ctx, int reclaim) {
        if ((v_type == VREG || v_type == VLNK) && 
                (cp->c_flag & C_DELETED) &&
                ((forkcount == 1) || (!VNODE_IS_RSRC(vp)))) {
        if ((v_type == VREG || v_type == VLNK) && 
                (cp->c_flag & C_DELETED) &&
                ((forkcount == 1) || (!VNODE_IS_RSRC(vp)))) {

-               
+
+               /* Start a transaction here.  We're about to change file sizes */
+               if (started_tr == 0) {
+                       if (hfs_start_transaction(hfsmp) != 0) {
+                               error = EINVAL;
+                               goto out;
+                       }
+                       else {
+                               started_tr = 1;
+                       }
+               }
+       

                /* Truncate away our own fork data. (Case A, B, C above) */
                if (VTOF(vp)->ff_blocks != 0) {
                /* Truncate away our own fork data. (Case A, B, C above) */
                if (VTOF(vp)->ff_blocks != 0) {

+                       
+                       /*
+                        * At this point, we have decided that this cnode is
+                        * suitable for full removal.  We are about to deallocate
+                        * its blocks and remove its entry from the catalog. 
+                        * If it was a symlink, then it's possible that the operation
+                        * which created it is still in the current transaction group
+                        * due to coalescing.  Take action here to kill the data blocks
+                        * of the symlink out of the journal before moving to 
+                        * deallocate the blocks.  We need to be in the middle of
+                        * a transaction before calling buf_iterate like this.
+                        * 
+                        * Note: we have to kill any potential symlink buffers out of 
+                        * the journal prior to deallocating their blocks.  This is so 
+                        * that we don't race with another thread that may be doing an 
+                        * an allocation concurrently and pick up these blocks. It could
+                        * generate I/O against them which could go out ahead of our journal
+                        * transaction.
+                        */
+
+                       if (hfsmp->jnl && vnode_islnk(vp)) {
+                               buf_iterate(vp, hfs_removefile_callback, BUF_SKIP_NONLOCKED, (void *)hfsmp);
+                       }
+

                        /*
                         * Since we're already inside a transaction,
                         * tell hfs_truncate to skip the ubc_setsize.
                        /*
                         * Since we're already inside a transaction,
                         * tell hfs_truncate to skip the ubc_setsize.


@@ -303,46 +367,85 @@ int hfs_cnode_teardown (struct vnode *vp, vfs_context_t ctx, int reclaim) {
                /* 
                 * Truncate away the resource fork, if we represent the data fork and
                 * it is the last fork.  That means, by definition, the rsrc fork is not in 
                /* 
                 * Truncate away the resource fork, if we represent the data fork and
                 * it is the last fork.  That means, by definition, the rsrc fork is not in 

-                * core.  So we bring it into core, and then truncate it away. 
+                * core.  To avoid bringing a vnode into core for the sole purpose of deleting the
+                * data in the resource fork, we call cat_lookup directly, then hfs_release_storage
+                * to get rid of the resource fork's data. 

                 * 
                 * This is invoked via case A above only.
                 */
                if ((cp->c_blocks > 0) && (forkcount == 1) && (vp != cp->c_rsrc_vp)) {
                 * 
                 * This is invoked via case A above only.
                 */
                if ((cp->c_blocks > 0) && (forkcount == 1) && (vp != cp->c_rsrc_vp)) {

-                       struct vnode *rvp = NULLVP;
+                       struct cat_lookup_buffer *lookup_rsrc = NULL;
+                       struct cat_desc *desc_ptr = NULL;
+                       lockflags = 0;
+
+                       MALLOC(lookup_rsrc, struct cat_lookup_buffer*, sizeof (struct cat_lookup_buffer), M_TEMP, M_WAITOK);
+                       if (lookup_rsrc == NULL) {
+                               printf("hfs_cnode_teardown: ENOMEM from MALLOC\n");
+                               error = ENOMEM;
+                               goto out;
+                       }
+                       else {
+                               bzero (lookup_rsrc, sizeof (struct cat_lookup_buffer));
+                       }
+
+                       if (cp->c_desc.cd_namelen == 0) {
+                               /* Initialize the rsrc descriptor for lookup if necessary*/
+                               MAKE_DELETED_NAME (lookup_rsrc->lookup_name, HFS_TEMPLOOKUP_NAMELEN, cp->c_fileid);
+                               
+                               lookup_rsrc->lookup_desc.cd_nameptr = (const uint8_t*) lookup_rsrc->lookup_name;
+                               lookup_rsrc->lookup_desc.cd_namelen = strlen (lookup_rsrc->lookup_name);
+                               lookup_rsrc->lookup_desc.cd_parentcnid = hfsmp->hfs_private_desc[FILE_HARDLINKS].cd_cnid;
+                               lookup_rsrc->lookup_desc.cd_cnid = cp->c_cnid;  
+                               
+                               desc_ptr = &lookup_rsrc->lookup_desc;
+                       }
+                       else {
+                               desc_ptr = &cp->c_desc; 
+                       }
+
+                       lockflags = hfs_systemfile_lock (hfsmp, SFL_CATALOG, HFS_SHARED_LOCK);
+
+                       error = cat_lookup (hfsmp, desc_ptr, 1, (struct cat_desc *) NULL, 
+                                       (struct cat_attr*) NULL, &lookup_rsrc->lookup_fork.ff_data, NULL);
+
+                       hfs_systemfile_unlock (hfsmp, lockflags);

                        
                        

-                       /* 
-                        * It is safe for us to pass FALSE to the argument can_drop_lock
-                        * on this call to hfs_vgetrsrc.  We know that the resource fork does not 
-                        * exist in core, so we'll have to go to the catalog to retrieve its 
-                        * information.  That will attach the resource fork vnode to our cnode. 
-                        */
-                       error = hfs_vgetrsrc(hfsmp, vp, &rvp, FALSE, FALSE);

                        if (error) {
                        if (error) {

+                               FREE (lookup_rsrc, M_TEMP);

                                goto out;
                        }
                                goto out;
                        }

+

                        /*
                        /*

-                        * Defer the vnode_put and ubc_setsize on rvp until hfs_unlock().
-                        * 
-                        * By bringing the vnode into core above, we may force hfs_vnop_reclaim 
-                        * to only partially finish if that's what called us.  Bringing the 
-                        * resource fork into core results in a new rsrc vnode that will get 
-                        * immediately marked for termination below.  It will get recycled/reclaimed 
-                        * as soon as possible, but that could cause another round of inactive and reclaim. 
+                        * Make the filefork in our temporary struct look like a real 
+                        * filefork.  Fill in the cp, sysfileinfo and rangelist fields..
+                        */
+                       rl_init (&lookup_rsrc->lookup_fork.ff_invalidranges);
+                       lookup_rsrc->lookup_fork.ff_cp = cp;
+
+                       /* 
+                        * If there were no errors, then we have the catalog's fork information 
+                        * for the resource fork in question.  Go ahead and delete the data in it now.

                         */
                         */

-                       cp->c_flag |= C_NEED_RVNODE_PUT | C_NEED_RSRC_SETSIZE;
-                       error = hfs_truncate(rvp, (off_t)0, IO_NDELAY, 1, 0, ctx);
+
+                       error = hfs_release_storage (hfsmp, NULL, &lookup_rsrc->lookup_fork, cp->c_fileid);
+                       FREE(lookup_rsrc, M_TEMP);
+

                        if (error) {
                                goto out;
                        }
                        if (error) {
                                goto out;
                        }

-                       
-                       /* 
-                        * Note that the following call to vnode_recycle is safe from within the
-                        * context of hfs_vnop_inactive or hfs_vnop_reclaim.  It is being invoked
-                        * on the RSRC fork vp (which is not our current vnode) As such, we hold 
-                        * an iocount on it and vnode_recycle will just add the MARKTERM bit at this
-                        * point.
+
+                       /*
+                        * This fileid's resource fork extents have now been fully deleted on-disk
+                        * and this CNID is no longer valid. At this point, we should be able to
+                        * zero out cp->c_blocks to indicate there is no data left in this file.

                         */
                         */

-                       vnode_recycle(rvp);  /* all done with this vnode */
+                       cp->c_blocks = 0;
+               }
+
+               /* End the transaction from the start of the file truncation segment */
+               if (started_tr) {
+                       hfs_end_transaction(hfsmp);
+                       started_tr = 0;

                }
        }
        
                }
        }
        


@@ -485,13 +588,44 @@ out:
         hfs_end_transaction(hfsmp);
         started_tr = 0;
     }
         hfs_end_transaction(hfsmp);
         started_tr = 0;
     }

-       
+
+#if 0
+#if CONFIG_PROTECT
+       /* 
+        * cnode truncate lock and cnode lock are both held exclusive here. 
+        *
+        * Go ahead and flush the keys out if this cnode is the last fork
+        * and it is not class F.  Class F keys should not be purged because they only
+        * exist in memory and have no persistent keys.  Only do this 
+        * if we haven't already done it yet (maybe a vnode skipped inactive 
+        * and went straight to reclaim).  This function gets called from both reclaim and
+        * inactive, so it will happen first in inactive if possible.
+        * 
+        * We need to be mindful that all pending IO for this file has already been
+        * issued and completed before we bzero out the key.  This is because
+        * if it isn't, tossing the key here could result in garbage IO being
+        * written (by using the bzero'd key) if the writes are happening asynchronously.
+        * 
+        * In addition, class A files may have already been purged due to the 
+        * lock event occurring.
+        */
+       if (forkcount == 1) {
+               struct cprotect *entry = cp->c_cpentry;
+               if ((entry) && (entry->cp_pclass != PROTECTION_CLASS_F)) {
+                       if ((cp->c_cpentry->cp_flags & CP_KEY_FLUSHED) == 0) {
+                               cp->c_cpentry->cp_flags |= CP_KEY_FLUSHED;
+                               bzero (cp->c_cpentry->cp_cache_key, cp->c_cpentry->cp_cache_key_len);
+                               bzero (cp->c_cpentry->cp_cache_iv_ctx, sizeof(aes_encrypt_ctx));
+                       }
+               }
+       }
+#endif
+#endif

        
        return error;   
 }
 
 
        
        return error;   
 }
 
 

-

 /*
  * hfs_vnop_inactive
  *
 /*
  * hfs_vnop_inactive
  *


@@ -600,6 +734,7 @@ hfs_filedone(struct vnode *vp, vfs_context_t context)
        struct rl_entry *invalid_range;
        off_t leof;
        u_int32_t blks, blocksize;
        struct rl_entry *invalid_range;
        off_t leof;
        u_int32_t blks, blocksize;

+       /* flags for zero-filling sparse ranges */

        int cluster_flags = IO_CLOSE;
        int cluster_zero_flags = IO_HEADZEROFILL | IO_NOZERODIRTY | IO_NOCACHE;
 
        int cluster_flags = IO_CLOSE;
        int cluster_zero_flags = IO_HEADZEROFILL | IO_NOZERODIRTY | IO_NOCACHE;
 


@@ -611,6 +746,25 @@ hfs_filedone(struct vnode *vp, vfs_context_t context)
        if ((hfsmp->hfs_flags & HFS_READ_ONLY) || (fp->ff_blocks == 0))
                return (0);
 
        if ((hfsmp->hfs_flags & HFS_READ_ONLY) || (fp->ff_blocks == 0))
                return (0);
 

+#if CONFIG_PROTECT
+       /* 
+        * Figure out if we need to do synchronous IO. 
+        * 
+        * If the file represents a content-protected file, we may need
+        * to issue synchronous IO when we dispatch to the cluster layer.
+        * If we didn't, then the IO would go out to the disk asynchronously.
+        * If the vnode hits the end of inactive before getting reclaimed, the
+        * content protection keys would be wiped/bzeroed out, and we'd end up
+        * trying to issue the IO with an invalid key.  This will lead to file 
+        * corruption.  IO_SYNC will force the cluster_push to wait until all IOs
+        * have completed (though they may be in the track cache).
+        */
+       if (cp_fs_protected(VTOVFS(vp))) {
+               cluster_flags |= IO_SYNC;
+               cluster_zero_flags |= IO_SYNC;
+       }
+#endif
+

        /* 
         * If we are being invoked from F_SWAPDATAEXTENTS, then we 
         * need to issue synchronous IO; Unless we are sure that all 
        /* 
         * If we are being invoked from F_SWAPDATAEXTENTS, then we 
         * need to issue synchronous IO; Unless we are sure that all 


@@ -654,8 +808,10 @@ hfs_filedone(struct vnode *vp, vfs_context_t context)
        /*
         * Shrink the peof to the smallest size neccessary to contain the leof.
         */
        /*
         * Shrink the peof to the smallest size neccessary to contain the leof.
         */

-       if (blks < fp->ff_blocks)
+       if (blks < fp->ff_blocks) {

                (void) hfs_truncate(vp, leof, IO_NDELAY, 0, 0, context);
                (void) hfs_truncate(vp, leof, IO_NDELAY, 0, 0, context);

+       }
+

        hfs_unlock(cp);
        (void) cluster_push(vp, cluster_flags);
        hfs_lock(cp, HFS_FORCE_LOCK);
        hfs_unlock(cp);
        (void) cluster_push(vp, cluster_flags);
        hfs_lock(cp, HFS_FORCE_LOCK);


@@ -871,7 +1027,7 @@ hfs_getnewvnode(
        if (cp == NULL) {
                return (ENOENT);
        }
        if (cp == NULL) {
                return (ENOENT);
        }

-       
+

        /* 
         * If we get a cnode/vnode pair out of hfs_chash_getcnode, then update the 
         * descriptor in the cnode as needed if the cnode represents a hardlink.  
        /* 
         * If we get a cnode/vnode pair out of hfs_chash_getcnode, then update the 
         * descriptor in the cnode as needed if the cnode represents a hardlink.  


@@ -913,7 +1069,7 @@ hfs_getnewvnode(
                                        vnode_put (*vpp);
                                        *vpp = NULL;
                                }
                                        vnode_put (*vpp);
                                        *vpp = NULL;
                                }

-
+                               

                                /*
                                 * If we raced with VNOP_RECLAIM for this vnode, the hash code could
                                 * have observed it after the c_vp or c_rsrc_vp fields had been torn down;
                                /*
                                 * If we raced with VNOP_RECLAIM for this vnode, the hash code could
                                 * have observed it after the c_vp or c_rsrc_vp fields had been torn down;


@@ -925,18 +1081,23 @@ hfs_getnewvnode(
                                if (hflags) {
                                        hfs_chashwakeup(hfsmp, cp, hflags);
                                }
                                if (hflags) {
                                        hfs_chashwakeup(hfsmp, cp, hflags);
                                }

-
+                               

                                *out_flags = GNV_CAT_ATTRCHANGED;
                                return ERECYCLE;        
                        }
                        else {
                                *out_flags = GNV_CAT_ATTRCHANGED;
                                return ERECYCLE;        
                        }
                        else {

-                               /* Otherwise, CNID != fileid. Go ahead and copy in the new descriptor */
+                               /* 
+                                * Otherwise, CNID != fileid. Go ahead and copy in the new descriptor. 
+                                *
+                                * Replacing the descriptor here is fine because we looked up the item without
+                                * a vnode in hand before.  If a vnode existed, its identity must be attached to this
+                                * item.  We are not susceptible to the lookup fastpath issue at this point.
+                                */

                                replace_desc(cp, descp);
                        }
                }
        }
        
                                replace_desc(cp, descp);
                        }
                }
        }
        

-       

        /* Check if we found a matching vnode */
        if (*vpp != NULL) {
                return (0);
        /* Check if we found a matching vnode */
        if (*vpp != NULL) {
                return (0);


@@ -1210,8 +1371,10 @@ hfs_getnewvnode(
        }
        
 #if CONFIG_PROTECT
        }
        
 #if CONFIG_PROTECT

-       if (!issystemfile && (*out_flags & GNV_NEW_CNODE))
+       /* Initialize the cp data structures. The key should be in place now. */
+       if (!issystemfile && (*out_flags & GNV_NEW_CNODE)) {

                cp_entry_init(cp, mp);
                cp_entry_init(cp, mp);

+       }

 #endif
 
        *vpp = vp;
 #endif
 
        *vpp = vp;


@@ -1264,7 +1427,7 @@ hfs_reclaim_cnode(struct cnode *cp)
        }
 #endif
 #if CONFIG_PROTECT
        }
 #endif
 #if CONFIG_PROTECT

-       cp_entry_destroy(cp);
+       cp_entry_destroy(&cp->c_cpentry);

 #endif
        
        
 #endif
        
        


@@ -1303,7 +1466,6 @@ hfs_valid_cnode(struct hfsmount *hfsmp, struct vnode *dvp, struct componentname
        if (dvp && cnp) {
                int lookup = 0;
                struct cat_fork fork;
        if (dvp && cnp) {
                int lookup = 0;
                struct cat_fork fork;

-

                bzero(&cndesc, sizeof(cndesc));
                cndesc.cd_nameptr = (const u_int8_t *)cnp->cn_nameptr;
                cndesc.cd_namelen = cnp->cn_namelen;
                bzero(&cndesc, sizeof(cndesc));
                cndesc.cd_nameptr = (const u_int8_t *)cnp->cn_nameptr;
                cndesc.cd_namelen = cnp->cn_namelen;


@@ -1327,6 +1489,7 @@ hfs_valid_cnode(struct hfsmount *hfsmp, struct vnode *dvp, struct componentname
                 */
                
                lookup = cat_lookup (hfsmp, &cndesc, 0, NULL, &attr, &fork, NULL);
                 */
                
                lookup = cat_lookup (hfsmp, &cndesc, 0, NULL, &attr, &fork, NULL);

+

                if ((lookup == 0) && (cnid == attr.ca_fileid)) {
                        stillvalid = 1;
                        *error = 0;
                if ((lookup == 0) && (cnid == attr.ca_fileid)) {
                        stillvalid = 1;
                        *error = 0;


@@ -1394,6 +1557,7 @@ notvalid:
        return (stillvalid);
 }
 
        return (stillvalid);
 }
 

+

 /*
  * Per HI and Finder requirements, HFS should add in the
  * date/time that a particular directory entry was added 
 /*
  * Per HI and Finder requirements, HFS should add in the
  * date/time that a particular directory entry was added 


@@ -1408,11 +1572,11 @@ notvalid:
  */
 void hfs_write_dateadded (struct cat_attr *attrp, u_int32_t dateadded) {
        u_int8_t *finfo = NULL;
  */
 void hfs_write_dateadded (struct cat_attr *attrp, u_int32_t dateadded) {
        u_int8_t *finfo = NULL;

-       
+

        /* overlay the FinderInfo to the correct pointer, and advance */
        finfo = (u_int8_t*)attrp->ca_finderinfo;
        finfo = finfo + 16;
        /* overlay the FinderInfo to the correct pointer, and advance */
        finfo = (u_int8_t*)attrp->ca_finderinfo;
        finfo = finfo + 16;

-       
+

        /* 
         * Make sure to write it out as big endian, since that's how
         * finder info is defined.  
        /* 
         * Make sure to write it out as big endian, since that's how
         * finder info is defined.  


@@ -1427,27 +1591,27 @@ void hfs_write_dateadded (struct cat_attr *attrp, u_int32_t dateadded) {
        else if (S_ISDIR(attrp->ca_mode)) {
                struct FndrExtendedDirInfo *extinfo = (struct FndrExtendedDirInfo *)finfo;
                extinfo->date_added = OSSwapHostToBigInt32(dateadded);          
        else if (S_ISDIR(attrp->ca_mode)) {
                struct FndrExtendedDirInfo *extinfo = (struct FndrExtendedDirInfo *)finfo;
                extinfo->date_added = OSSwapHostToBigInt32(dateadded);          

-               attrp->ca_recflags |= kHFSHasDateAddedMask; 
+                               attrp->ca_recflags |= kHFSHasDateAddedMask; 

        }
        }

-    

        /* If it were neither directory/file, then we'd bail out */
        return;
 }
 
        /* If it were neither directory/file, then we'd bail out */
        return;
 }
 

+

 u_int32_t hfs_get_dateadded (struct cnode *cp) {
        u_int8_t *finfo = NULL;
        u_int32_t dateadded = 0;
 u_int32_t hfs_get_dateadded (struct cnode *cp) {
        u_int8_t *finfo = NULL;
        u_int32_t dateadded = 0;

-       
+

        if ((cp->c_attr.ca_recflags & kHFSHasDateAddedMask) == 0) {
                /* Date added was never set.  Return 0. */
                return dateadded;
        }
        if ((cp->c_attr.ca_recflags & kHFSHasDateAddedMask) == 0) {
                /* Date added was never set.  Return 0. */
                return dateadded;
        }

-       
-    
+
+

        /* overlay the FinderInfo to the correct pointer, and advance */
        finfo = (u_int8_t*)cp->c_finderinfo;
        finfo = finfo + 16;
        /* overlay the FinderInfo to the correct pointer, and advance */
        finfo = (u_int8_t*)cp->c_finderinfo;
        finfo = finfo + 16;

-       
+

        /* 
         * FinderInfo is written out in big endian... make sure to convert it to host
         * native before we use it.
        /* 
         * FinderInfo is written out in big endian... make sure to convert it to host
         * native before we use it.


@@ -1460,12 +1624,10 @@ u_int32_t hfs_get_dateadded (struct cnode *cp) {
                struct FndrExtendedDirInfo *extinfo = (struct FndrExtendedDirInfo *)finfo;
                dateadded = OSSwapBigToHostInt32 (extinfo->date_added);
        }
                struct FndrExtendedDirInfo *extinfo = (struct FndrExtendedDirInfo *)finfo;
                dateadded = OSSwapBigToHostInt32 (extinfo->date_added);
        }

-    
+

        return dateadded;
 }
 
        return dateadded;
 }
 

-
-

 /*
  * Touch cnode times based on c_touch_xxx flags
  *
 /*
  * Touch cnode times based on c_touch_xxx flags
  *


@@ -1546,7 +1708,7 @@ hfs_touchtimes(struct hfsmount *hfsmp, struct cnode* cp)
                        cp->c_flag |= C_MODIFIED;
                        touchvol = 1;
                }
                        cp->c_flag |= C_MODIFIED;
                        touchvol = 1;
                }

-               
+

                if (cp->c_flag & C_NEEDS_DATEADDED) {
                        hfs_write_dateadded (&(cp->c_attr), tv.tv_sec);
                        cp->c_flag |= C_MODIFIED;
                if (cp->c_flag & C_NEEDS_DATEADDED) {
                        hfs_write_dateadded (&(cp->c_attr), tv.tv_sec);
                        cp->c_flag |= C_MODIFIED;