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Add test and comments for truncation of non-resident attributes to 

zero size. We should be converting such an attribute to a resident
one instead of leaving a zero size non-resident attribute.

(Logical change 1.70)
edge.strict_endians
cantab.net!aia21 2002-12-28 22:13:06 +00:00
parent ff5a0d104d
commit 7b2cb8211f
1 changed files with 20 additions and 0 deletions
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20
libntfs/attrib.c
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@ -2121,6 +2121,25 @@ static int ntfs_non_resident_attr_shrink(ntfs_attr *na, const s64 newsize)
err = errno;
goto put_err_out;
}
/*
* If the attribute now has zero size, need to convert it to a
* resident attribute.
*/
if (!newsize) {
// TODO: Perform the conversion! (AIA)
/* Update the ntfs attribute structure accordingly. */
/*
na->allocated_size = na->data_size =
na->initialized_size = newsize;
if (NAttrCompressed(na) || NAttrSparse(na))
na->compressed_size = newsize;
NAttrClearNonResident(na);
free(na->rl);
na->rl = NULL;
goto done;
*/
}
/* Truncate the runlist itself. */
if (ntfs_rl_truncate(&na->rl, first_free_vcn)) {
// FIXME: Eeek! We need rollback! (AIA)
@ -2213,6 +2232,7 @@ static int ntfs_non_resident_attr_shrink(ntfs_attr *na, const s64 newsize)
na->initialized_size = newsize;
a->initialized_size = scpu_to_le64(newsize);
}
done:
/* Set the inode dirty so it is written out later. */
ntfs_inode_mark_dirty(ctx->ntfs_ino);
/* Done! */