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authorDenys Vlasenko <vda.linux@googlemail.com>2012-03-06 16:32:06 +0100
committerDenys Vlasenko <vda.linux@googlemail.com>2012-03-06 16:32:06 +0100
commit02c3c3842004d88207b46450dbd19f80e6596c7e (patch)
tree68890b6d081c3851b898f41bede25badc6b453fa /archival/libarchive
parent8a6a2f9c9c214b94bd945acd97ac8b28c25e194e (diff)
downloadbusybox-02c3c3842004d88207b46450dbd19f80e6596c7e.tar.gz
Move seamless .Z support into unpack_gz_stream
unpack_gz_stream 566 643 +77 unpack_gunzip 123 12 -111 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'archival/libarchive')
-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)
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;