s3: VFS: vfs_streams_depot. Implement renameat().

Currently identical to rename().

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>

diff --git a/source3/modules/vfs_streams_depot.c b/source3/modules/vfs_streams_depot.c
index 31625b347118040a4a73974a81310f39627532da..cd4a8d89686ad64bff5b1a26d6bf7be7c66f0c24 100644 (file)
--- a/source3/modules/vfs_streams_depot.c
+++ b/source3/modules/vfs_streams_depot.c
@@ -880,6 +880,66 @@ done:
        return ret;
 }
 
+static int streams_depot_renameat(vfs_handle_struct *handle,
+                               files_struct *srcfsp,
+                               const struct smb_filename *smb_fname_src,
+                               files_struct *dstfsp,
+                               const struct smb_filename *smb_fname_dst)
+{
+       struct smb_filename *smb_fname_src_stream = NULL;
+       struct smb_filename *smb_fname_dst_stream = NULL;
+       bool src_is_stream, dst_is_stream;
+       NTSTATUS status;
+       int ret = -1;
+
+       DEBUG(10, ("streams_depot_renameat called for %s => %s\n",
+                  smb_fname_str_dbg(smb_fname_src),
+                  smb_fname_str_dbg(smb_fname_dst)));
+
+       src_is_stream = is_ntfs_stream_smb_fname(smb_fname_src);
+       dst_is_stream = is_ntfs_stream_smb_fname(smb_fname_dst);
+
+       if (!src_is_stream && !dst_is_stream) {
+               return SMB_VFS_NEXT_RENAMEAT(handle,
+                                       srcfsp,
+                                       smb_fname_src,
+                                       dstfsp,
+                                       smb_fname_dst);
+       }
+
+       /* for now don't allow renames from or to the default stream */
+       if (is_ntfs_default_stream_smb_fname(smb_fname_src) ||
+           is_ntfs_default_stream_smb_fname(smb_fname_dst)) {
+               errno = ENOSYS;
+               goto done;
+       }
+
+       status = stream_smb_fname(handle, smb_fname_src, &smb_fname_src_stream,
+                                 false);
+       if (!NT_STATUS_IS_OK(status)) {
+               errno = map_errno_from_nt_status(status);
+               goto done;
+       }
+
+       status = stream_smb_fname(handle, smb_fname_dst,
+                                 &smb_fname_dst_stream, false);
+       if (!NT_STATUS_IS_OK(status)) {
+               errno = map_errno_from_nt_status(status);
+               goto done;
+       }
+
+       ret = SMB_VFS_NEXT_RENAMEAT(handle,
+                               srcfsp,
+                               smb_fname_src_stream,
+                               dstfsp,
+                               smb_fname_dst_stream);
+
+done:
+       TALLOC_FREE(smb_fname_src_stream);
+       TALLOC_FREE(smb_fname_dst_stream);
+       return ret;
+}
+
 static bool add_one_stream(TALLOC_CTX *mem_ctx, unsigned int *num_streams,
                           struct stream_struct **streams,
                           const char *name, off_t size,
@@ -1058,6 +1118,7 @@ static struct vfs_fn_pointers vfs_streams_depot_fns = {
        .unlink_fn = streams_depot_unlink,
        .rmdir_fn = streams_depot_rmdir,
        .rename_fn = streams_depot_rename,
+       .renameat_fn = streams_depot_renameat,
        .streaminfo_fn = streams_depot_streaminfo,
 };