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authorDenys Vlasenko <vda.linux@googlemail.com>2017-08-10 10:35:08 +0200
committerDenys Vlasenko <vda.linux@googlemail.com>2017-08-10 10:36:37 +0200
commit0cf64c8b5d86d603903397bfce87dea5a862caec (patch)
tree66ee79e6c9c2ff17c84b776b4ce36439cf9f94e0 /archival/libarchive
parent3c9b8fe25233dc52bbeec2ab29e49b8f62e4739b (diff)
downloadbusybox-0cf64c8b5d86d603903397bfce87dea5a862caec.tar.gz
rpm2cpio: handle LZMA compressed rpms. closes 10166
function old new delta rpm2cpio_main 78 120 +42 setup_lzma_on_fd - 29 +29 fork_transformer_and_free - 28 +28 ... setup_unzip_on_fd 56 32 -24 ------------------------------------------------------------------------------ (add/remove: 2/0 grow/shrink: 3/5 up/down: 104/-67) Total: 37 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'archival/libarchive')
-rw-r--r--archival/libarchive/open_transformer.c38
1 files changed, 27 insertions, 11 deletions
diff --git a/archival/libarchive/open_transformer.c b/archival/libarchive/open_transformer.c
index ac7e5db95..290dd130f 100644
--- a/archival/libarchive/open_transformer.c
+++ b/archival/libarchive/open_transformer.c
@@ -225,18 +225,8 @@ static transformer_state_t *setup_transformer_on_fd(int fd, int fail_if_not_comp
return xstate;
}
-/* Used by e.g. rpm which gives us a fd without filename,
- * thus we can't guess the format from filename's extension.
- */
-int FAST_FUNC setup_unzip_on_fd(int fd, int fail_if_not_compressed)
+static void fork_transformer_and_free(transformer_state_t *xstate)
{
- transformer_state_t *xstate = setup_transformer_on_fd(fd, fail_if_not_compressed);
-
- if (!xstate || !xstate->xformer) {
- free(xstate);
- return 1;
- }
-
# if BB_MMU
fork_transformer_with_no_sig(xstate->src_fd, xstate->xformer);
# else
@@ -249,8 +239,34 @@ int FAST_FUNC setup_unzip_on_fd(int fd, int fail_if_not_compressed)
fork_transformer_with_sig(xstate->src_fd, xstate->xformer, xstate->xformer_prog);
# endif
free(xstate);
+}
+
+/* Used by e.g. rpm which gives us a fd without filename,
+ * thus we can't guess the format from filename's extension.
+ */
+int FAST_FUNC setup_unzip_on_fd(int fd, int fail_if_not_compressed)
+{
+ transformer_state_t *xstate = setup_transformer_on_fd(fd, fail_if_not_compressed);
+
+ if (!xstate->xformer) {
+ free(xstate);
+ return 1;
+ }
+
+ fork_transformer_and_free(xstate);
return 0;
}
+#if ENABLE_FEATURE_SEAMLESS_LZMA
+/* ...and custom version for LZMA */
+void FAST_FUNC setup_lzma_on_fd(int fd)
+{
+ transformer_state_t *xstate = xzalloc(sizeof(*xstate));
+ xstate->src_fd = fd;
+ xstate->xformer = unpack_lzma_stream;
+ USE_FOR_NOMMU(xstate->xformer_prog = "unlzma";)
+ fork_transformer_and_free(xstate);
+}
+#endif
static transformer_state_t *open_transformer(const char *fname, int fail_if_not_compressed)
{