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authorDenis Vlasenko2008-11-01 12:54:56 +0000
committerDenis Vlasenko2008-11-01 12:54:56 +0000
commit1a9e9bdd93b06508b70bd29ef5eeb82f91d86222 (patch)
treeadcf234f48d8a68a5644f1504cc93025d58ce2a2 /archival/libunarchive
parent5a89763fb7e57d4fc3d393eafa35c58f8285a083 (diff)
downloadbusybox-1a9e9bdd93b06508b70bd29ef5eeb82f91d86222.zip
busybox-1a9e9bdd93b06508b70bd29ef5eeb82f91d86222.tar.gz
gunzip: restore mtime. approx +80 bytes of code
rpm: make code more robust lsmod: small code shrink
Diffstat (limited to 'archival/libunarchive')
-rw-r--r--archival/libunarchive/decompress_unzip.c26
1 files changed, 19 insertions, 7 deletions
diff --git a/archival/libunarchive/decompress_unzip.c b/archival/libunarchive/decompress_unzip.c
index f25808a..e83cd4f 100644
--- a/archival/libunarchive/decompress_unzip.c
+++ b/archival/libunarchive/decompress_unzip.c
@@ -1108,18 +1108,21 @@ static uint32_t buffer_read_le_u32(STATE_PARAM_ONLY)
return res;
}
-static int check_header_gzip(STATE_PARAM_ONLY)
+static int check_header_gzip(STATE_PARAM unpack_info_t *info)
{
union {
unsigned char raw[8];
struct {
uint8_t gz_method;
uint8_t flags;
- //uint32_t mtime; - unused fields
- //uint8_t xtra_flags;
- //uint8_t os_flags;
- } formatted; /* packed */
+ uint32_t mtime;
+ uint8_t xtra_flags_UNUSED;
+ uint8_t os_flags_UNUSED;
+ } __attribute__((packed)) formatted;
} header;
+ struct BUG_header {
+ char BUG_header[sizeof(header) == 8 ? 1 : -1];
+ };
/*
* Rewind bytebuffer. We use the beginning because the header has 8
@@ -1167,6 +1170,9 @@ static int check_header_gzip(STATE_PARAM_ONLY)
}
}
+ if (info)
+ info->mtime = SWAP_LE32(header.formatted.mtime);
+
/* Read the header checksum */
if (header.formatted.flags & 0x02) {
if (!top_up(PASS_STATE 2))
@@ -1177,7 +1183,7 @@ static int check_header_gzip(STATE_PARAM_ONLY)
}
USE_DESKTOP(long long) int FAST_FUNC
-unpack_gz_stream(int in, int out)
+unpack_gz_stream_with_info(int in, int out, unpack_info_t *info)
{
uint32_t v32;
USE_DESKTOP(long long) int n;
@@ -1192,7 +1198,7 @@ unpack_gz_stream(int in, int out)
gunzip_src_fd = in;
again:
- if (!check_header_gzip(PASS_STATE_ONLY)) {
+ if (!check_header_gzip(PASS_STATE info)) {
bb_error_msg("corrupted data");
n = -1;
goto ret;
@@ -1239,3 +1245,9 @@ unpack_gz_stream(int in, int out)
DEALLOC_STATE;
return n;
}
+
+USE_DESKTOP(long long) int FAST_FUNC
+unpack_gz_stream(int in, int out)
+{
+ return unpack_gz_stream_with_info(in, out, NULL);
+}