Abstract read and seek in unarchiving code, convert bunzip to file descriptors, support tar -j

archival/libunarchive/data_extract_all.c

@@ -1,4 +1,21 @@
+/*
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
 #include <sys/types.h>
+
 #include <errno.h>
 #include <fcntl.h>
 #include <stdlib.h>
@@ -6,6 +23,7 @@
 #include <utime.h>
 #include <unistd.h>
 #include <stdlib.h>
+
 #include "libbb.h"
 #include "unarchive.h"
 
@@ -21,7 +39,7 @@ extern void data_extract_all(archive_handle_t *archive_handle)
 		free(name);
 	}                  
 
-	/* Create the file */
+	/* Create the filesystem entry */
 	switch(file_header->mode & S_IFMT) {
 		case S_IFREG: {
 #ifdef CONFIG_CPIO
@@ -36,7 +54,7 @@ extern void data_extract_all(archive_handle_t *archive_handle)
 			{
 				/* Regular file */
 				dst_fd = xopen(file_header->name, O_WRONLY | O_CREAT);
-				copy_file_chunk_fd(archive_handle->src_fd, dst_fd, file_header->size);
+				archive_copy_file(archive_handle, dst_fd);
 				close(dst_fd);
 			}
 			break;