blob: 889fed0d9aa9eaa434653adb794a0cf29ad78d64 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
/* vi: set sw=4 ts=4: */
/*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
#include "libbb.h"
#include "archive.h"
char FAST_FUNC get_header_tar_gz(archive_handle_t *archive_handle)
{
#if BB_MMU
uint16_t magic;
#endif
/* 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);
/* Can skip this check, but error message will be less clear */
if (magic != GZIP_MAGIC) {
bb_error_msg_and_die("invalid gzip magic");
}
#endif
open_transformer(archive_handle->src_fd, unpack_gz_stream, "gunzip");
archive_handle->offset = 0;
while (get_header_tar(archive_handle) == EXIT_SUCCESS)
continue;
/* Can only do one file at a time */
return EXIT_FAILURE;
}
|
