diff options
Diffstat (limited to 'archival/libarchive/decompress_gunzip.c')
| -rw-r--r-- | archival/libarchive/decompress_gunzip.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/archival/libarchive/decompress_gunzip.c b/archival/libarchive/decompress_gunzip.c index f1c9a79e5..66152a853 100644 --- a/archival/libarchive/decompress_gunzip.c +++ b/archival/libarchive/decompress_gunzip.c @@ -1188,8 +1188,26 @@ unpack_gz_stream(transformer_aux_data_t *aux, int src_fd, int dst_fd) IF_DESKTOP(long long) int total, n; DECLARE_STATE; +#if !ENABLE_FEATURE_SEAMLESS_Z if (check_signature16(aux, src_fd, GZIP_MAGIC)) return -1; +#else + if (aux && aux->check_signature) { + uint16_t magic2; + + if (full_read(STDIN_FILENO, &magic2, 2) != 2) { + bad_magic: + bb_error_msg("invalid magic"); + return -1; + } + if (magic2 == COMPRESS_MAGIC) { + aux->check_signature = 0; + return unpack_Z_stream(aux, src_fd, dst_fd); + } + if (magic2 != GZIP_MAGIC) + goto bad_magic; + } +#endif total = 0; |