1 /* vi: set sw=4 ts=4: */
3 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
9 char FAST_FUNC get_header_tar_gz(archive_handle_t *archive_handle)
12 unsigned char magic[2];
15 /* Can't lseek over pipes */
16 archive_handle->seek = seek_by_read;
18 /* Check gzip magic only if open_transformer will invoke unpack_gz_stream (MMU case).
19 * Otherwise, it will invoke an external helper "gunzip -cf" (NOMMU case) which will
22 xread(archive_handle->src_fd, &magic, 2);
23 if ((magic[0] != 0x1f) || (magic[1] != 0x8b)) {
24 bb_error_msg_and_die("invalid gzip magic");
28 archive_handle->src_fd = open_transformer(archive_handle->src_fd, unpack_gz_stream, "gunzip");
29 archive_handle->offset = 0;
30 while (get_header_tar(archive_handle) == EXIT_SUCCESS)
33 /* Can only do one file at a time */