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-rw-r--r--archival/libarchive/decompress_gunzip.c18
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)
1188 IF_DESKTOP(long long) int total, n; 1188 IF_DESKTOP(long long) int total, n;
1189 DECLARE_STATE; 1189 DECLARE_STATE;
1190 1190
1191#if !ENABLE_FEATURE_SEAMLESS_Z
1191 if (check_signature16(aux, src_fd, GZIP_MAGIC)) 1192 if (check_signature16(aux, src_fd, GZIP_MAGIC))
1192 return -1; 1193 return -1;
1194#else
1195 if (aux && aux->check_signature) {
1196 uint16_t magic2;
1197
1198 if (full_read(STDIN_FILENO, &magic2, 2) != 2) {
1199 bad_magic:
1200 bb_error_msg("invalid magic");
1201 return -1;
1202 }
1203 if (magic2 == COMPRESS_MAGIC) {
1204 aux->check_signature = 0;
1205 return unpack_Z_stream(aux, src_fd, dst_fd);
1206 }
1207 if (magic2 != GZIP_MAGIC)
1208 goto bad_magic;
1209 }
1210#endif
1193 1211
1194 total = 0; 1212 total = 0;
1195 1213