* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
-#include <stdlib.h>
-
#include "libbb.h"
#include "unarchive.h"
-char get_header_tar_gz(archive_handle_t *archive_handle)
+char FAST_FUNC get_header_tar_gz(archive_handle_t *archive_handle)
{
+#if BB_MMU
unsigned char magic[2];
+#endif
- /* Cant lseek over pipe's */
+ /* Can't lseek over pipes */
archive_handle->seek = seek_by_read;
+ /* Check gzip magic only if open_transformer will invoke unpack_gz_stream (MMU case).
+ * Otherwise, it will invoke an external helper "gunzip -cf" (NOMMU case) which will
+ * need the header. */
+#if BB_MMU
xread(archive_handle->src_fd, &magic, 2);
if ((magic[0] != 0x1f) || (magic[1] != 0x8b)) {
bb_error_msg_and_die("invalid gzip magic");
}
+#endif
- check_header_gzip(archive_handle->src_fd);
-
- archive_handle->src_fd = open_transformer(archive_handle->src_fd, inflate_gunzip);
+ archive_handle->src_fd = open_transformer(archive_handle->src_fd, unpack_gz_stream, "gunzip");
archive_handle->offset = 0;
- while (get_header_tar(archive_handle) == EXIT_SUCCESS) /**/;
+ while (get_header_tar(archive_handle) == EXIT_SUCCESS)
+ continue;
/* Can only do one file at a time */
return EXIT_FAILURE;