archival: support zstd in rpm and dpkgzstd

1 files changed, 2 insertions, 9 deletions

diff --git a/archival/libarchive/decompress_unzstd.c b/archival/libarchive/decompress_unzstd.c
index 08930a3e5..c55ab8575 100644
--- a/archival/libarchive/decompress_unzstd.c
+++ b/archival/libarchive/decompress_unzstd.c
@@ -4,16 +4,9 @@
 IF_DESKTOP(long long) int FAST_FUNC
 unpack_zstd_stream(transformer_state_t *xstate)
 {
-        char *argv[] = {(char *)"unzstd", NULL};
+        // FIXME Provide an internal implementation of zstd decompression.
+        char *argv[] = {(char *)"unzstd", (char *)"-cf", (char *)"-", NULL};
 
-        /* Exec external unzstd. */
-#if BB_MMU
-        if (xstate->signature_skipped) {
-                /* If called from fork_transformer_with_no_sig() signature_skipped
-                 * is just a flag, not the actual offset.  But we know it's 4. */
-                xlseek(xstate->src_fd, -4, SEEK_CUR);
-        }
-#endif
         xmove_fd(xstate->src_fd, STDIN_FILENO);
         xmove_fd(xstate->dst_fd, STDOUT_FILENO);
         BB_EXECVP_or_die(argv);