Cleanup: move xfrm stream wrappers to libxfrm

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

6 files changed, 860 insertions, 347 deletions

diff --git a/lib/xfrm/Makemodule.am b/lib/xfrm/Makemodule.am
index 518344c..4f5ed8e 100644
--- a/lib/xfrm/Makemodule.am
+++ b/lib/xfrm/Makemodule.am
@@ -2,14 +2,15 @@ LIBXFRM_LIBS = $(ZLIB_LIBS) $(XZ_LIBS) $(BZIP2_LIBS) $(ZSTD_LIBS)
 LIBXFRM_TESTS =
 
 libxfrm_a_SOURCES = include/xfrm/stream.h include/xfrm/compress.h \
-	lib/xfrm/src/compress.c
+	include/xfrm/wrap.h lib/xfrm/src/compress.c lib/xfrm/src/istream.c \
+	lib/xfrm/src/ostream.c
 libxfrm_a_CFLAGS = $(AM_CFLAGS)
 
 if WITH_XZ
 libxfrm_a_SOURCES += lib/xfrm/src/xz.c
 libxfrm_a_CFLAGS += $(XZ_CFLAGS) -DWITH_XZ
 
-test_unpack_xz_SOURCES = lib/xfrm/test/unpack.c
+test_unpack_xz_SOURCES = lib/xfrm/test/unpack.c lib/xfrm/test/blob.h
 test_unpack_xz_LDADD = libxfrm.a $(XZ_LIBS)
 test_unpack_xz_CPPFLAGS = $(AM_CPPFLAGS) -DDO_XZ=1
 
@@ -17,14 +18,18 @@ test_pack_xz_SOURCES = lib/xfrm/test/pack.c
 test_pack_xz_LDADD = libxfrm.a $(LIBXFRM_LIBS)
 test_pack_xz_CPPFLAGS = $(AM_CPPFLAGS) -DDO_XZ=1
 
-LIBXFRM_TESTS += test_pack_xz test_unpack_xz
+test_wrap_xz_SOURCES = lib/xfrm/test/wrap.c lib/xfrm/test/blob.h
+test_wrap_xz_LDADD = libcommon.a libsquashfs.la libxfrm.a libcompat.a $(XZ_LIBS)
+test_wrap_xz_CPPFLAGS = $(AM_CPPFLAGS) -DDO_XZ=1
+
+LIBXFRM_TESTS += test_pack_xz test_unpack_xz test_wrap_xz
 endif
 
 if WITH_BZIP2
 libxfrm_a_SOURCES += lib/xfrm/src/bzip2.c
 libxfrm_a_CFLAGS += $(BZIP2_CFLAGS) -DWITH_BZIP2
 
-test_unpack_bzip2_SOURCES = lib/xfrm/test/unpack.c
+test_unpack_bzip2_SOURCES = lib/xfrm/test/unpack.c lib/xfrm/test/blob.h
 test_unpack_bzip2_LDADD = libxfrm.a $(BZIP2_LIBS)
 test_unpack_bzip2_CPPFLAGS = $(AM_CPPFLAGS) -DDO_BZIP2=1
 
@@ -32,14 +37,19 @@ test_pack_bzip2_SOURCES = lib/xfrm/test/pack.c
 test_pack_bzip2_LDADD = libxfrm.a $(LIBXFRM_LIBS)
 test_pack_bzip2_CPPFLAGS = $(AM_CPPFLAGS) -DDO_BZIP2=1
 
-LIBXFRM_TESTS += test_unpack_bzip2 test_pack_bzip2
+test_wrap_bzip2_SOURCES = lib/xfrm/test/wrap.c lib/xfrm/test/blob.h
+test_wrap_bzip2_LDADD = libcommon.a libsquashfs.la libxfrm.a \
+	libcompat.a $(BZIP2_LIBS)
+test_wrap_bzip2_CPPFLAGS = $(AM_CPPFLAGS) -DDO_BZIP2=1
+
+LIBXFRM_TESTS += test_unpack_bzip2 test_pack_bzip2 test_wrap_bzip2
 endif
 
 if WITH_GZIP
 libxfrm_a_SOURCES += lib/xfrm/src/gzip.c
 libxfrm_a_CFLAGS += $(ZLIB_CFLAGS) -DWITH_GZIP
 
-test_unpack_gzip_SOURCES = lib/xfrm/test/unpack.c
+test_unpack_gzip_SOURCES = lib/xfrm/test/unpack.c lib/xfrm/test/blob.h
 test_unpack_gzip_LDADD = libxfrm.a $(ZLIB_LIBS)
 test_unpack_gzip_CPPFLAGS = $(AM_CPPFLAGS) -DDO_GZIP=1
 
@@ -47,7 +57,12 @@ test_pack_gzip_SOURCES = lib/xfrm/test/pack.c
 test_pack_gzip_LDADD = libxfrm.a $(LIBXFRM_LIBS)
 test_pack_gzip_CPPFLAGS = $(AM_CPPFLAGS) -DDO_GZIP=1
 
-LIBXFRM_TESTS += test_pack_gzip test_unpack_gzip
+test_wrap_gzip_SOURCES = lib/xfrm/test/wrap.c lib/xfrm/test/blob.h
+test_wrap_gzip_LDADD = libcommon.a libsquashfs.la libxfrm.a \
+	libcompat.a $(ZLIB_LIBS)
+test_wrap_gzip_CPPFLAGS = $(AM_CPPFLAGS) -DDO_GZIP=1
+
+LIBXFRM_TESTS += test_pack_gzip test_unpack_gzip test_wrap_gzip
 endif
 
 if WITH_ZSTD
@@ -59,11 +74,16 @@ test_pack_zstd_SOURCES = lib/xfrm/test/pack.c
 test_pack_zstd_LDADD = libxfrm.a $(LIBXFRM_LIBS)
 test_pack_zstd_CPPFLAGS = $(AM_CPPFLAGS) -DDO_ZSTD=1
 
-test_unpack_zstd_SOURCES = lib/xfrm/test/unpack.c
+test_unpack_zstd_SOURCES = lib/xfrm/test/unpack.c lib/xfrm/test/blob.h
 test_unpack_zstd_LDADD = libxfrm.a $(ZSTD_LIBS)
 test_unpack_zstd_CPPFLAGS = $(AM_CPPFLAGS) -DDO_ZSTD=1
 
-LIBXFRM_TESTS += test_pack_zstd test_unpack_zstd
+test_wrap_zstd_SOURCES = lib/xfrm/test/wrap.c lib/xfrm/test/blob.h
+test_wrap_zstd_LDADD = libcommon.a libsquashfs.la libxfrm.a \
+	libcompat.a $(ZSTD_LIBS)
+test_wrap_zstd_CPPFLAGS = $(AM_CPPFLAGS) -DDO_ZSTD=1
+
+LIBXFRM_TESTS += test_pack_zstd test_unpack_zstd test_wrap_zstd
 endif
 endif
 
diff --git a/lib/xfrm/src/istream.c b/lib/xfrm/src/istream.c
new file mode 100644
index 0000000..ecf0887
--- /dev/null
+++ b/lib/xfrm/src/istream.c
@@ -0,0 +1,151 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * istream.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "config.h"
+#include "compat.h"
+#include "sqfs/io.h"
+#include "sqfs/error.h"
+#include "xfrm/compress.h"
+#include "xfrm/wrap.h"
+
+#include <string.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <ctype.h>
+#include <errno.h>
+
+#define BUFSZ (262144)
+
+typedef struct istream_xfrm_t {
+	sqfs_istream_t base;
+
+	sqfs_istream_t *wrapped;
+	xfrm_stream_t *xfrm;
+
+	size_t buffer_offset;
+	size_t buffer_used;
+	sqfs_u8 uncompressed[BUFSZ];
+} istream_xfrm_t;
+
+static int precache(sqfs_istream_t *base)
+{
+	istream_xfrm_t *xfrm = (istream_xfrm_t *)base;
+	int ret;
+
+	if (xfrm->buffer_offset > 0 &&
+	    xfrm->buffer_offset < xfrm->buffer_used) {
+		memmove(xfrm->uncompressed,
+			xfrm->uncompressed + xfrm->buffer_offset,
+			xfrm->buffer_used - xfrm->buffer_offset);
+	}
+
+	xfrm->buffer_used -= xfrm->buffer_offset;
+	xfrm->buffer_offset = 0;
+
+	for (;;) {
+		sqfs_u32 in_off = 0, out_off = xfrm->buffer_used;
+		int mode = XFRM_STREAM_FLUSH_NONE;
+		const sqfs_u8 *ptr;
+		size_t avail;
+
+		ret = xfrm->wrapped->get_buffered_data(xfrm->wrapped, &ptr,
+						       &avail, BUFSZ);
+		if (ret < 0)
+			return ret;
+		if (ret > 0)
+			mode = XFRM_STREAM_FLUSH_FULL;
+
+		ret = xfrm->xfrm->process_data(xfrm->xfrm,
+					       ptr, avail,
+					       xfrm->uncompressed + out_off,
+					       BUFSZ - out_off,
+					       &in_off, &out_off, mode);
+
+		if (ret == XFRM_STREAM_ERROR)
+			return SQFS_ERROR_COMPRESSOR;
+
+		xfrm->buffer_used = out_off;
+		xfrm->wrapped->advance_buffer(xfrm->wrapped, in_off);
+
+		if (ret == XFRM_STREAM_BUFFER_FULL || out_off >= BUFSZ)
+			break;
+
+		if (mode == XFRM_STREAM_FLUSH_FULL)
+			break;
+	}
+
+	return 0;
+}
+
+static int xfrm_get_buffered_data(sqfs_istream_t *strm, const sqfs_u8 **out,
+				  size_t *size, size_t want)
+{
+	istream_xfrm_t *xfrm = (istream_xfrm_t *)strm;
+
+	if (want > BUFSZ)
+		want = BUFSZ;
+
+	if (xfrm->buffer_used == 0 ||
+	    (xfrm->buffer_used - xfrm->buffer_offset) < want) {
+		int ret = precache(strm);
+		if (ret)
+			return ret;
+	}
+
+	*out = xfrm->uncompressed + xfrm->buffer_offset;
+	*size = xfrm->buffer_used - xfrm->buffer_offset;
+	return (*size == 0) ? 1 : 0;
+}
+
+static void xfrm_advance_buffer(sqfs_istream_t *strm, size_t count)
+{
+	istream_xfrm_t *xfrm = (istream_xfrm_t *)strm;
+
+	assert(count <= xfrm->buffer_used);
+
+	xfrm->buffer_offset += count;
+
+	assert(xfrm->buffer_offset <= xfrm->buffer_used);
+}
+
+static const char *xfrm_get_filename(sqfs_istream_t *strm)
+{
+	istream_xfrm_t *xfrm = (istream_xfrm_t *)strm;
+
+	return xfrm->wrapped->get_filename(xfrm->wrapped);
+}
+
+static void xfrm_destroy(sqfs_object_t *obj)
+{
+	istream_xfrm_t *xfrm = (istream_xfrm_t *)obj;
+
+	sqfs_drop(xfrm->xfrm);
+	sqfs_drop(xfrm->wrapped);
+	free(xfrm);
+}
+
+sqfs_istream_t *istream_xfrm_create(sqfs_istream_t *strm, xfrm_stream_t *xfrm)
+{
+	istream_xfrm_t *stream = calloc(1, sizeof(*stream));
+	sqfs_istream_t *base = (sqfs_istream_t *)stream;
+
+	if (stream == NULL)
+		goto fail;
+
+	sqfs_object_init(stream, xfrm_destroy, NULL);
+
+	stream->wrapped = sqfs_grab(strm);
+	stream->xfrm = sqfs_grab(xfrm);
+
+	base->get_buffered_data = xfrm_get_buffered_data;
+	base->advance_buffer = xfrm_advance_buffer;
+	base->get_filename = xfrm_get_filename;
+	return base;
+fail:
+	fprintf(stderr, "%s: error initializing decompressor stream.\n",
+		strm->get_filename(strm));
+	return NULL;
+}
diff --git a/lib/xfrm/src/ostream.c b/lib/xfrm/src/ostream.c
new file mode 100644
index 0000000..8e33a91
--- /dev/null
+++ b/lib/xfrm/src/ostream.c
@@ -0,0 +1,156 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * ostream.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "config.h"
+#include "compat.h"
+#include "sqfs/io.h"
+#include "sqfs/error.h"
+#include "xfrm/compress.h"
+#include "xfrm/wrap.h"
+
+#include <string.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <ctype.h>
+#include <errno.h>
+
+#define BUFSZ (262144)
+
+typedef struct ostream_xfrm_t {
+	sqfs_ostream_t base;
+
+	sqfs_ostream_t *wrapped;
+	xfrm_stream_t *xfrm;
+
+	size_t inbuf_used;
+
+	sqfs_u8 inbuf[BUFSZ];
+	sqfs_u8 outbuf[BUFSZ];
+} ostream_xfrm_t;
+
+static int flush_inbuf(ostream_xfrm_t *xfrm, bool finish)
+{
+	const sqfs_u32 avail_out = sizeof(xfrm->outbuf);
+	const sqfs_u32 avail_in = xfrm->inbuf_used;
+	const int mode = finish ? XFRM_STREAM_FLUSH_FULL :
+		XFRM_STREAM_FLUSH_NONE;
+	sqfs_u32 off_in = 0, off_out = 0;
+	int ret, ioret;
+
+	while (finish || off_in < avail_in) {
+		ret = xfrm->xfrm->process_data(xfrm->xfrm,
+					       xfrm->inbuf + off_in,
+					       avail_in - off_in,
+					       xfrm->outbuf + off_out,
+					       avail_out - off_out,
+					       &off_in, &off_out, mode);
+
+		if (ret == XFRM_STREAM_ERROR)
+			return SQFS_ERROR_COMPRESSOR;
+
+		ioret = xfrm->wrapped->append(xfrm->wrapped,
+					      xfrm->outbuf, off_out);
+		if (ioret)
+			return ioret;
+
+		off_out = 0;
+
+		if (ret == XFRM_STREAM_END)
+			break;
+	}
+
+	if (off_in < avail_in) {
+		memmove(xfrm->inbuf, xfrm->inbuf + off_in, avail_in - off_in);
+		xfrm->inbuf_used -= off_in;
+	} else {
+		xfrm->inbuf_used = 0;
+	}
+
+	return 0;
+}
+
+static int xfrm_append(sqfs_ostream_t *strm, const void *data, size_t size)
+{
+	ostream_xfrm_t *xfrm = (ostream_xfrm_t *)strm;
+	size_t diff;
+
+	while (size > 0) {
+		if (xfrm->inbuf_used >= BUFSZ) {
+			int ret = flush_inbuf(xfrm, false);
+			if (ret)
+				return ret;
+		}
+
+		diff = BUFSZ - xfrm->inbuf_used;
+
+		if (diff > size)
+			diff = size;
+
+		if (data == NULL) {
+			memset(xfrm->inbuf + xfrm->inbuf_used, 0, diff);
+		} else {
+			memcpy(xfrm->inbuf + xfrm->inbuf_used, data, diff);
+			data = (const char *)data + diff;
+		}
+
+		xfrm->inbuf_used += diff;
+		size -= diff;
+	}
+
+	return 0;
+}
+
+static int xfrm_flush(sqfs_ostream_t *strm)
+{
+	ostream_xfrm_t *xfrm = (ostream_xfrm_t *)strm;
+
+	if (xfrm->inbuf_used > 0) {
+		int ret = flush_inbuf(xfrm, true);
+		if (ret)
+			return ret;
+	}
+
+	return xfrm->wrapped->flush(xfrm->wrapped);
+}
+
+static const char *xfrm_get_filename(sqfs_ostream_t *strm)
+{
+	ostream_xfrm_t *xfrm = (ostream_xfrm_t *)strm;
+
+	return xfrm->wrapped->get_filename(xfrm->wrapped);
+}
+
+static void xfrm_destroy(sqfs_object_t *obj)
+{
+	ostream_xfrm_t *xfrm = (ostream_xfrm_t *)obj;
+
+	sqfs_drop(xfrm->wrapped);
+	sqfs_drop(xfrm->xfrm);
+	free(xfrm);
+}
+
+sqfs_ostream_t *ostream_xfrm_create(sqfs_ostream_t *strm, xfrm_stream_t *xfrm)
+{
+	ostream_xfrm_t *stream = calloc(1, sizeof(*stream));
+	sqfs_ostream_t *base = (sqfs_ostream_t *)stream;
+
+	if (stream == NULL)
+		goto fail;
+
+	sqfs_object_init(stream, xfrm_destroy, NULL);
+
+	stream->wrapped = sqfs_grab(strm);
+	stream->xfrm = sqfs_grab(xfrm);
+	stream->inbuf_used = 0;
+	base->append = xfrm_append;
+	base->flush = xfrm_flush;
+	base->get_filename = xfrm_get_filename;
+	return base;
+fail:
+	fprintf(stderr, "%s: error initializing compressor.\n",
+		strm->get_filename(strm));
+	return NULL;
+}
diff --git a/lib/xfrm/test/blob.h b/lib/xfrm/test/blob.h
new file mode 100644
index 0000000..13e232e
--- /dev/null
+++ b/lib/xfrm/test/blob.h
@@ -0,0 +1,348 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * blob.h
+ *
+ * Copyright (C) 2022 David Oberhollenzer <goliath@infraroot.at>
+ */
+#ifndef BLOB_H
+#define BLOB_H
+
+static const sqfs_u8 blob_in[] = {
+#if defined(DO_XZ)
+	0xfd, 0x37, 0x7a, 0x58, 0x5a, 0x00, 0x00, 0x00,
+	0xff, 0x12, 0xd9, 0x41, 0x02, 0x00, 0x21, 0x01,
+	0x1c, 0x00, 0x00, 0x00, 0x10, 0xcf, 0x58, 0xcc,
+	0xe0, 0x01, 0xbd, 0x01, 0x43, 0x5d, 0x00, 0x26,
+	0x1b, 0xca, 0x46, 0x67, 0x5a, 0xf2, 0x77, 0xb8,
+	0x7d, 0x86, 0xd8, 0x41, 0xdb, 0x05, 0x35, 0xcd,
+	0x83, 0xa5, 0x7c, 0x12, 0xa5, 0x05, 0xdb, 0x90,
+	0xbd, 0x2f, 0x14, 0xd3, 0x71, 0x72, 0x96, 0xa8,
+	0x8a, 0x7d, 0x84, 0x56, 0x71, 0x8d, 0x6a, 0x22,
+	0x98, 0xab, 0x9e, 0x3d, 0xc3, 0x55, 0xef, 0xcc,
+	0xa5, 0xc3, 0xdd, 0x5b, 0x8e, 0xbf, 0x03, 0x81,
+	0x21, 0x40, 0xd6, 0x26, 0x91, 0x02, 0x45, 0x4e,
+	0x20, 0x91, 0xcf, 0x8c, 0x51, 0x22, 0x02, 0x70,
+	0xba, 0x05, 0x6b, 0x83, 0xef, 0x3f, 0x8e, 0x09,
+	0xef, 0x88, 0xf5, 0x37, 0x1b, 0x89, 0x8d, 0xff,
+	0x1e, 0xee, 0xe8, 0xb0, 0xac, 0xf2, 0x6e, 0xd4,
+	0x3e, 0x25, 0xaf, 0xa0, 0x6d, 0x2e, 0xc0, 0x7f,
+	0xb5, 0xa0, 0xcb, 0x90, 0x1f, 0x08, 0x1a, 0xe2,
+	0x90, 0x20, 0x19, 0x71, 0x0c, 0xe8, 0x3f, 0xe5,
+	0x39, 0xeb, 0x9a, 0x62, 0x4f, 0x06, 0xda, 0x3c,
+	0x32, 0x59, 0xcc, 0x83, 0xe3, 0x83, 0x0f, 0x38,
+	0x7d, 0x43, 0x37, 0x6c, 0x0b, 0x05, 0x65, 0x98,
+	0x25, 0xdb, 0xf2, 0xc0, 0x2d, 0x39, 0x36, 0x5d,
+	0xd4, 0xb6, 0xc2, 0x79, 0x73, 0x3e, 0xc2, 0x6e,
+	0x54, 0xec, 0x78, 0x2b, 0x5d, 0xf1, 0xd1, 0xb4,
+	0xb3, 0xcd, 0xf3, 0x89, 0xf5, 0x81, 0x3e, 0x2c,
+	0x65, 0xd6, 0x73, 0xd3, 0x1b, 0x20, 0x68, 0x0c,
+	0x93, 0xd4, 0xfc, 0x9f, 0xf8, 0xa7, 0xd4, 0xfa,
+	0x3a, 0xb1, 0x13, 0x93, 0x4b, 0xec, 0x78, 0x7d,
+	0x5c, 0x81, 0x80, 0xe5, 0x14, 0x78, 0xfe, 0x7e,
+	0xde, 0xf7, 0xad, 0x9e, 0x84, 0xba, 0xf1, 0x00,
+	0xe9, 0xbd, 0x2c, 0xf4, 0x70, 0x7d, 0xbe, 0x29,
+	0xb9, 0xf0, 0x10, 0xb9, 0x01, 0xf1, 0x76, 0x8a,
+	0x5a, 0xad, 0x02, 0xa1, 0x32, 0xc8, 0x53, 0x59,
+	0x11, 0x4c, 0xe2, 0x98, 0x34, 0xd9, 0x23, 0x51,
+	0x4a, 0x40, 0x2b, 0x87, 0x41, 0xdd, 0x50, 0xcd,
+	0x98, 0x1e, 0x29, 0x86, 0x23, 0x93, 0x3e, 0x9b,
+	0x6b, 0x16, 0xa1, 0x40, 0xac, 0xe7, 0x40, 0xfe,
+	0xa9, 0x87, 0x48, 0x25, 0x52, 0x02, 0x8b, 0xc4,
+	0x68, 0x08, 0x5a, 0x62, 0xc1, 0xb2, 0x07, 0x3b,
+	0x26, 0x1e, 0x59, 0x5c, 0x47, 0x24, 0xae, 0x8e,
+	0xe5, 0xf7, 0xe6, 0x4b, 0x13, 0xb4, 0x6d, 0x46,
+	0x65, 0x4f, 0xd0, 0x48, 0xcc, 0x51, 0x4b, 0x80,
+	0xcb, 0xf1, 0xd4, 0x6c, 0x45, 0x98, 0x92, 0x47,
+	0xeb, 0x60, 0x00, 0x00, 0x00, 0x01, 0xd7, 0x02,
+	0xbe, 0x03, 0x00, 0x00, 0xda, 0x2c, 0x45, 0x49,
+	0xa8, 0x00, 0x0a, 0xfc, 0x02, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x59, 0x5a
+#elif defined(DO_BZIP2)
+	0x42, 0x5a, 0x68, 0x39, 0x31, 0x41, 0x59, 0x26,
+	0x53, 0x59, 0x05, 0x24, 0x28, 0x04, 0x00, 0x00,
+	0x27, 0xd7, 0x80, 0x00, 0x10, 0x40, 0x05, 0x06,
+	0x04, 0x02, 0x00, 0x3f, 0xe7, 0xff, 0x40, 0x30,
+	0x01, 0x2d, 0x23, 0x62, 0x26, 0x05, 0x3d, 0x03,
+	0x54, 0xfd, 0x53, 0x4c, 0x86, 0x9e, 0x90, 0x6a,
+	0x9e, 0x9e, 0x85, 0x3c, 0xa0, 0x00, 0x00, 0x1a,
+	0x9e, 0x41, 0x13, 0x13, 0x28, 0x69, 0x03, 0xd4,
+	0x0f, 0x1c, 0x70, 0xd0, 0xb4, 0xe3, 0xe4, 0x75,
+	0x4e, 0x8b, 0x67, 0x43, 0x7b, 0x38, 0x27, 0x77,
+	0xe4, 0xc1, 0x98, 0x3a, 0x2d, 0x3a, 0xe4, 0x44,
+	0x98, 0xdc, 0x49, 0x8b, 0x22, 0x48, 0xfc, 0xc8,
+	0xe7, 0x57, 0x05, 0x3c, 0x5a, 0xee, 0x5a, 0x84,
+	0xcd, 0x7c, 0x8f, 0x26, 0x6b, 0x6e, 0xf7, 0xb5,
+	0x49, 0x1f, 0x79, 0x42, 0x5d, 0x09, 0x8c, 0xc6,
+	0xde, 0x0c, 0x0d, 0xb1, 0x46, 0xb4, 0xee, 0xd9,
+	0x8f, 0x33, 0x37, 0x04, 0xa9, 0x05, 0x49, 0xe3,
+	0x04, 0x16, 0x62, 0x36, 0x3a, 0x01, 0xda, 0xd4,
+	0xc8, 0x8a, 0x32, 0x02, 0x1f, 0x62, 0x4b, 0xa4,
+	0x49, 0x59, 0xda, 0x50, 0x85, 0x69, 0x35, 0x21,
+	0x10, 0xc6, 0x8a, 0x3c, 0x44, 0x95, 0xb0, 0xbc,
+	0xc5, 0x6b, 0xea, 0xfb, 0x40, 0xbd, 0x14, 0x01,
+	0x6a, 0xfa, 0xcd, 0x67, 0xd8, 0x2d, 0x93, 0x8b,
+	0xda, 0x44, 0x1b, 0xe9, 0x5a, 0x87, 0x60, 0xb0,
+	0xe0, 0x73, 0xd1, 0x01, 0x3a, 0x66, 0x05, 0xcc,
+	0x34, 0xa0, 0x63, 0x8d, 0x35, 0x5e, 0xa0, 0x9f,
+	0x05, 0x89, 0x15, 0x51, 0x48, 0x16, 0x0c, 0x61,
+	0xf4, 0x30, 0xb8, 0x07, 0x29, 0xc0, 0xf5, 0x1a,
+	0xe1, 0x0d, 0x6c, 0xfe, 0x91, 0xda, 0x13, 0x2f,
+	0x8e, 0x5b, 0x1c, 0xfc, 0xb3, 0xb2, 0x30, 0x9d,
+	0xf6, 0x09, 0x30, 0x55, 0x30, 0x67, 0xc2, 0x87,
+	0xe9, 0x9a, 0xd4, 0x1d, 0x66, 0x11, 0x54, 0x89,
+	0x21, 0xe1, 0x55, 0x84, 0xbf, 0xa6, 0x11, 0xa4,
+	0xb8, 0x40, 0xed, 0x42, 0x20, 0xb9, 0xb7, 0x26,
+	0x31, 0x14, 0x4f, 0x86, 0xdc, 0x50, 0x34, 0x38,
+	0x8b, 0x57, 0x77, 0x21, 0xf6, 0x89, 0xbd, 0xc5,
+	0x65, 0xc3, 0x23, 0x45, 0xec, 0x7f, 0x8b, 0xb9,
+	0x22, 0x9c, 0x28, 0x48, 0x02, 0x92, 0x14, 0x02,
+	0x00,
+#elif defined(DO_GZIP)
+	0x1f, 0x8b, 0x08, 0x08, 0xdb, 0xa1, 0x97, 0x63,
+	0x00, 0x03, 0x74, 0x65, 0x73, 0x74, 0x2e, 0x74,
+	0x78, 0x74, 0x00, 0x35, 0x90, 0xc1, 0x71, 0x43,
+	0x31, 0x08, 0x44, 0xef, 0xbf, 0x8a, 0x2d, 0x20,
+	0xf3, 0xab, 0x48, 0x6e, 0xb9, 0xa6, 0x00, 0x82,
+	0xb0, 0xc3, 0x8c, 0x24, 0x64, 0x09, 0x3c, 0x2e,
+	0x3f, 0xc8, 0x4e, 0x6e, 0x42, 0xc0, 0xb2, 0xfb,
+	0x3e, 0x6d, 0x4a, 0x83, 0x8e, 0x15, 0x0d, 0xc5,
+	0xaa, 0x4d, 0x2c, 0x75, 0x50, 0x13, 0x7f, 0x03,
+	0x5b, 0x5f, 0xc2, 0x2e, 0x1e, 0x13, 0x54, 0x74,
+	0xe8, 0x62, 0xed, 0x57, 0x48, 0xd5, 0x6c, 0x2e,
+	0x29, 0xb9, 0x00, 0xd1, 0x58, 0xcd, 0xca, 0xe1,
+	0xd2, 0x46, 0x2e, 0x6b, 0x67, 0x2d, 0x5a, 0xa2,
+	0x3b, 0xc2, 0x51, 0xe9, 0x3b, 0xe5, 0x21, 0xfe,
+	0x92, 0x16, 0x34, 0xba, 0x76, 0x02, 0x55, 0xbd,
+	0x05, 0x9d, 0xf8, 0x72, 0x48, 0xd7, 0x96, 0xda,
+	0x68, 0xba, 0x1f, 0xf7, 0x2c, 0xa9, 0xbd, 0x1d,
+	0xb7, 0xd0, 0x85, 0x6e, 0xcb, 0x67, 0x14, 0xc8,
+	0x43, 0x26, 0xab, 0x93, 0xab, 0x75, 0x44, 0xad,
+	0xd4, 0xd8, 0x5e, 0xca, 0x7b, 0x48, 0x97, 0xee,
+	0x4b, 0x4f, 0x49, 0x1d, 0x39, 0x0c, 0xa1, 0x34,
+	0xde, 0xd2, 0x93, 0x1d, 0xcf, 0x00, 0x79, 0xca,
+	0x4f, 0xbc, 0x6f, 0x49, 0x0a, 0x17, 0xe8, 0x8c,
+	0x74, 0xf2, 0xca, 0xaa, 0x1d, 0x53, 0xc6, 0x94,
+	0x1f, 0xe9, 0x45, 0x66, 0x06, 0xcf, 0x8f, 0xbb,
+	0xd5, 0x18, 0x79, 0x4e, 0xd2, 0x4e, 0x26, 0x85,
+	0xac, 0x25, 0x07, 0x6b, 0xad, 0xff, 0x84, 0x32,
+	0x50, 0xe0, 0x12, 0x57, 0x25, 0x47, 0xdf, 0x86,
+	0x30, 0x68, 0x66, 0x11, 0xf3, 0xc4, 0xc7, 0x83,
+	0x65, 0xb8, 0xc4, 0xc6, 0x98, 0x0c, 0x8c, 0x99,
+	0x84, 0x73, 0x8e, 0x63, 0x68, 0x21, 0xdf, 0x1b,
+	0xd6, 0x8f, 0x31, 0x4d, 0x8b, 0xf4, 0x4d, 0x71,
+	0x93, 0xca, 0xa3, 0x1c, 0x75, 0x10, 0x32, 0x02,
+	0xec, 0x72, 0x51, 0x56, 0x42, 0x91, 0x25, 0x73,
+	0x77, 0x9b, 0xd5, 0x6d, 0x83, 0x36, 0x20, 0x4d,
+	0x1c, 0xeb, 0x8f, 0x6b, 0xb4, 0xf3, 0xf8, 0x05,
+	0x6b, 0x8b, 0x8b, 0x20, 0xbe, 0x01, 0x00, 0x00,
+#elif defined(DO_ZSTD)
+	0x28, 0xb5, 0x2f, 0xfd, 0x04, 0x88, 0xa5, 0x08,
+	0x00, 0x46, 0x97, 0x3a, 0x1a, 0x80, 0x37, 0xcd,
+	0x01, 0xc0, 0x8a, 0xec, 0xfe, 0x2d, 0xf2, 0xb9,
+	0x44, 0x6b, 0xb9, 0x24, 0x77, 0x56, 0x5a, 0x33,
+	0x17, 0x0b, 0x67, 0x83, 0x2e, 0x47, 0x07, 0x31,
+	0x00, 0x32, 0x00, 0x33, 0x00, 0xc5, 0x2c, 0x5a,
+	0x92, 0x93, 0x0f, 0x7b, 0xd1, 0x1d, 0x63, 0x2c,
+	0xc8, 0x99, 0x94, 0x77, 0x8f, 0x94, 0x38, 0x75,
+	0x80, 0x2f, 0xae, 0xc1, 0x3e, 0xd2, 0xcf, 0x49,
+	0x15, 0x25, 0x1a, 0x87, 0x93, 0xdd, 0xe8, 0x00,
+	0x6d, 0xaa, 0xf8, 0x54, 0x74, 0xe5, 0x48, 0x4d,
+	0xa6, 0xf3, 0x1a, 0xa3, 0x13, 0x08, 0xe5, 0x26,
+	0xdc, 0x73, 0xcc, 0x3e, 0xfd, 0x86, 0xa9, 0x52,
+	0xb2, 0x76, 0xc7, 0xc2, 0x0f, 0xe4, 0x84, 0x4b,
+	0x12, 0x61, 0x3a, 0x6b, 0x7a, 0x1e, 0x8a, 0x81,
+	0xa9, 0x9b, 0x11, 0x37, 0x25, 0x55, 0x73, 0x73,
+	0x71, 0xa0, 0x84, 0xca, 0xc3, 0x4b, 0xb5, 0xcc,
+	0x50, 0xa6, 0x46, 0xd7, 0xe8, 0x08, 0xaa, 0x04,
+	0x28, 0xb1, 0x8e, 0xea, 0xb4, 0x4a, 0x49, 0x2b,
+	0xd6, 0x0d, 0x59, 0x68, 0xda, 0x64, 0x29, 0x1f,
+	0x85, 0x53, 0x72, 0xf1, 0xc5, 0x88, 0x1a, 0x0b,
+	0x4f, 0x96, 0x43, 0xe0, 0x91, 0x89, 0xb9, 0xc0,
+	0xe8, 0x18, 0xd5, 0x6e, 0x94, 0xe8, 0x35, 0x66,
+	0x01, 0x94, 0x80, 0x95, 0x87, 0xe2, 0xc8, 0x19,
+	0x73, 0xa3, 0x01, 0x05, 0xc1, 0x64, 0x72, 0xc9,
+	0x6b, 0x6e, 0x55, 0x7c, 0x29, 0x67, 0x90, 0x93,
+	0x49, 0xeb, 0xe3, 0x85, 0xc2, 0xf5, 0x79, 0x68,
+	0x9d, 0x92, 0xc3, 0x32, 0x75, 0x80, 0x66, 0xf2,
+	0x43, 0xa7, 0xb0, 0xc3, 0x22, 0x3f, 0x39, 0x8a,
+	0x35, 0x5c, 0x63, 0x5c, 0xd1, 0x9e, 0x8a, 0xd2,
+	0x78, 0x3c, 0x12, 0x01, 0x25, 0x04, 0x0e, 0x08,
+	0x10, 0x88, 0xb6, 0x1b, 0xb7, 0x96, 0x35, 0xa8,
+	0x0d, 0x1e, 0xae, 0xac, 0x4a, 0x70, 0xa5, 0x31,
+	0xd0, 0x0c, 0x78, 0xbf, 0xdd, 0xc5, 0x24, 0x3e,
+	0xcb, 0x0a, 0x0a, 0x69, 0x40, 0xba, 0xb0, 0xc4,
+	0x2a, 0x9b, 0x1e, 0x0a, 0x51, 0xa6, 0x16, 0x98,
+	0x76,
+#endif
+};
+
+static const sqfs_u8 blob_in_concat[] = {
+#if defined(DO_XZ)
+	0xfd, 0x37, 0x7a, 0x58, 0x5a, 0x00, 0x00, 0x04,
+	0xe6, 0xd6, 0xb4, 0x46, 0x02, 0x00, 0x21, 0x01,
+	0x16, 0x00, 0x00, 0x00, 0x74, 0x2f, 0xe5, 0xa3,
+	0xe0, 0x00, 0xdc, 0x00, 0xb3, 0x5d, 0x00, 0x26,
+	0x1b, 0xca, 0x46, 0x67, 0x5a, 0xf2, 0x77, 0xb8,
+	0x7d, 0x86, 0xd8, 0x41, 0xdb, 0x05, 0x35, 0xcd,
+	0x83, 0xa5, 0x7c, 0x12, 0xa5, 0x05, 0xdb, 0x90,
+	0xbd, 0x2f, 0x14, 0xd3, 0x71, 0x72, 0x96, 0xa8,
+	0x8a, 0x7d, 0x84, 0x56, 0x71, 0x8d, 0x6a, 0x22,
+	0x98, 0xab, 0x9e, 0x3d, 0xc3, 0x55, 0xef, 0xcc,
+	0xa5, 0xc3, 0xdd, 0x5b, 0x8e, 0xbf, 0x03, 0x81,
+	0x21, 0x40, 0xd6, 0x26, 0x91, 0x02, 0x45, 0x4e,
+	0x20, 0x91, 0xcf, 0x8c, 0x51, 0x22, 0x02, 0x70,
+	0xba, 0x05, 0x6b, 0x83, 0xef, 0x3f, 0x8e, 0x09,
+	0xef, 0x88, 0xf5, 0x37, 0x1b, 0x89, 0x8d, 0xff,
+	0x1e, 0xee, 0xe8, 0xb0, 0xac, 0xf2, 0x6e, 0xd4,
+	0x3e, 0x25, 0xaf, 0xa0, 0x6d, 0x2e, 0xc0, 0x7f,
+	0xb5, 0xa0, 0xcb, 0x90, 0x1f, 0x08, 0x1a, 0xe2,
+	0x90, 0x20, 0x19, 0x71, 0x0c, 0xe8, 0x3f, 0xe5,
+	0x39, 0xeb, 0x9a, 0x62, 0x4f, 0x06, 0xda, 0x3c,
+	0x32, 0x59, 0xcc, 0x83, 0xe3, 0x83, 0x0f, 0x38,
+	0x7d, 0x43, 0x37, 0x6c, 0x0b, 0x05, 0x65, 0x98,
+	0x25, 0xdb, 0xf2, 0xc0, 0x2d, 0x39, 0x36, 0x5d,
+	0xd4, 0xb6, 0xc2, 0x79, 0x73, 0x3e, 0xc2, 0x6e,
+	0x54, 0xec, 0x78, 0x2b, 0x5d, 0xf1, 0xd1, 0xb4,
+	0xb3, 0xcd, 0xf3, 0x89, 0xf5, 0x80, 0x79, 0x46,
+	0xc0, 0x00, 0x00, 0x00, 0xc4, 0xf5, 0x1d, 0x08,
+	0xf0, 0x34, 0x3a, 0x59, 0x00, 0x01, 0xcf, 0x01,
+	0xdd, 0x01, 0x00, 0x00, 0x7f, 0x5a, 0x77, 0xcb,
+	0xb1, 0xc4, 0x67, 0xfb, 0x02, 0x00, 0x00, 0x00,
+	0x00, 0x04, 0x59, 0x5a,
+	0xfd, 0x37, 0x7a, 0x58, 0x5a, 0x00, 0x00, 0x04,
+	0xe6, 0xd6, 0xb4, 0x46, 0x02, 0x00, 0x21, 0x01,
+	0x16, 0x00, 0x00, 0x00, 0x74, 0x2f, 0xe5, 0xa3,
+	0xe0, 0x00, 0xe0, 0x00, 0xb7, 0x5d, 0x00, 0x31,
+	0x9b, 0xca, 0x19, 0xc5, 0x54, 0xec, 0xb6, 0x54,
+	0xe7, 0xb1, 0x7d, 0xc4, 0x57, 0x9e, 0x6c, 0x89,
+	0xad, 0x4a, 0x6d, 0x16, 0xd8, 0x3c, 0x05, 0x94,
+	0x10, 0x16, 0x99, 0x38, 0x21, 0xa3, 0xb9, 0xc5,
+	0x80, 0xff, 0xfc, 0xee, 0xd4, 0xd5, 0x3f, 0xdd,
+	0x8c, 0xd7, 0x3d, 0x8f, 0x76, 0xec, 0x96, 0x9d,
+	0x20, 0xac, 0xcb, 0x18, 0xf5, 0xb2, 0x9c, 0x12,
+	0xf6, 0x7c, 0x33, 0xdc, 0x4f, 0x9a, 0xe5, 0x2d,
+	0x63, 0x68, 0xa4, 0x2b, 0x1d, 0x0a, 0x1e, 0xf0,
+	0xfe, 0x73, 0xf2, 0x5f, 0x7b, 0xb4, 0xea, 0x54,
+	0xad, 0x27, 0xd1, 0xff, 0xb6, 0x50, 0x06, 0x7b,
+	0x51, 0x3f, 0x25, 0x8a, 0xcf, 0x4c, 0x03, 0x3e,
+	0xc3, 0xad, 0x47, 0x34, 0xcf, 0xba, 0x45, 0x79,
+	0xd0, 0x7b, 0xf6, 0x66, 0x63, 0xc0, 0xc6, 0x69,
+	0xa7, 0x51, 0x84, 0xa8, 0xa0, 0x0b, 0xbc, 0x6f,
+	0x13, 0x89, 0xd6, 0x5e, 0xac, 0xca, 0x2f, 0xd2,
+	0xe7, 0xe1, 0x1e, 0x78, 0x22, 0x3a, 0x59, 0x6c,
+	0x9c, 0x8c, 0x65, 0xf1, 0x5b, 0xf4, 0xbf, 0xd5,
+	0xdc, 0x05, 0xeb, 0x70, 0x10, 0xb8, 0x6c, 0xf2,
+	0x13, 0x20, 0xb0, 0xdd, 0x3e, 0xb2, 0x92, 0x5b,
+	0xa3, 0xf7, 0x94, 0xa1, 0xa1, 0x74, 0x36, 0x9a,
+	0xf1, 0xd8, 0xc2, 0xf0, 0xc6, 0x29, 0x7e, 0x85,
+	0x28, 0xf5, 0xf2, 0x21, 0x00, 0x00, 0x00, 0x00,
+	0xc8, 0x80, 0x67, 0x40, 0xc3, 0xaa, 0x17, 0x57,
+	0x00, 0x01, 0xd3, 0x01, 0xe1, 0x01, 0x00, 0x00,
+	0x86, 0xdf, 0x9e, 0x05, 0xb1, 0xc4, 0x67, 0xfb,
+	0x02, 0x00, 0x00, 0x00, 0x00, 0x04, 0x59, 0x5a
+#elif defined(DO_BZIP2)
+	0x42, 0x5a, 0x68, 0x39, 0x31, 0x41, 0x59, 0x26,
+	0x53, 0x59, 0x5d, 0x09, 0x24, 0x1d, 0x00, 0x00,
+	0x13, 0xd7, 0x80, 0x00, 0x10, 0x40, 0x05, 0x00,
+	0x04, 0x02, 0x00, 0x3e, 0xa7, 0xff, 0x40, 0x30,
+	0x00, 0xac, 0x43, 0x54, 0xf5, 0x36, 0x4c, 0xa7,
+	0xa8, 0xd3, 0x6a, 0x60, 0x81, 0x40, 0x00, 0xd0,
+	0x32, 0x64, 0x0d, 0x53, 0xda, 0x02, 0x09, 0xa2,
+	0x68, 0x34, 0xd1, 0x27, 0x4a, 0xdd, 0xf2, 0x0a,
+	0x73, 0x43, 0xf9, 0xa2, 0x51, 0x85, 0x76, 0x45,
+	0x9a, 0x68, 0x3a, 0xe7, 0x0d, 0xc0, 0x21, 0x4a,
+	0xc4, 0xf9, 0xf7, 0x40, 0xc3, 0x10, 0xb2, 0x9b,
+	0x58, 0x56, 0x71, 0x50, 0x2f, 0xa4, 0xc5, 0x61,
+	0x19, 0xf6, 0x59, 0x06, 0x82, 0x03, 0x7f, 0xeb,
+	0xd2, 0x61, 0x88, 0xcd, 0xe8, 0xf7, 0xe8, 0x87,
+	0x59, 0x9d, 0xe1, 0xf8, 0x19, 0x6e, 0xad, 0x77,
+	0xbf, 0x34, 0x17, 0x21, 0x6b, 0x91, 0xc9, 0x52,
+	0xd0, 0x81, 0x1e, 0xb5, 0x0b, 0xee, 0x42, 0x84,
+	0x80, 0xd5, 0xa1, 0x8a, 0x04, 0x18, 0x4d, 0xf3,
+	0xda, 0x7e, 0x3c, 0x40, 0xa4, 0xdb, 0xe5, 0xf0,
+	0x37, 0x40, 0x3a, 0x7d, 0xa7, 0x45, 0x21, 0xf2,
+	0x5a, 0x7b, 0x59, 0x56, 0x16, 0xd5, 0xac, 0x9f,
+	0x60, 0x85, 0x0e, 0xf5, 0x73, 0xd9, 0x47, 0xe2,
+	0xee, 0x48, 0xa7, 0x0a, 0x12, 0x0b, 0xa1, 0x24,
+	0x83, 0xa0,
+	0x42, 0x5a, 0x68, 0x39, 0x31, 0x41, 0x59, 0x26,
+	0x53, 0x59, 0x2c, 0x24, 0x39, 0xa0, 0x00, 0x00,
+	0x1f, 0x55, 0x80, 0x00, 0x10, 0x40, 0x05, 0x06,
+	0x00, 0x3f, 0xe7, 0xff, 0x40, 0x30, 0x00, 0xb5,
+	0x91, 0x13, 0x4f, 0x54, 0x7a, 0x6a, 0x6d, 0x4d,
+	0xa2, 0x68, 0x0c, 0x84, 0x53, 0xf5, 0x30, 0x89,
+	0xa3, 0xd4, 0x0d, 0x0f, 0x49, 0xa0, 0xd4, 0xf4,
+	0xd1, 0x53, 0xf4, 0x93, 0x69, 0x3c, 0x81, 0x1a,
+	0x65, 0x53, 0x90, 0x51, 0x07, 0x2a, 0xad, 0x8f,
+	0x63, 0xba, 0x25, 0xc2, 0x0c, 0x8b, 0xb9, 0x95,
+	0x15, 0xd8, 0xda, 0x61, 0x5c, 0xa9, 0xe4, 0x0b,
+	0x21, 0xc9, 0x97, 0x57, 0x01, 0x28, 0x9b, 0xfb,
+	0x94, 0xb9, 0x48, 0xa3, 0x0a, 0xc6, 0x1c, 0x54,
+	0x98, 0x9a, 0x39, 0xc3, 0x87, 0x90, 0x33, 0x58,
+	0x2d, 0x3e, 0x16, 0xb1, 0xae, 0x26, 0x89, 0x75,
+	0xf5, 0x77, 0xa5, 0x8e, 0x5b, 0x8c, 0x8a, 0x39,
+	0xbd, 0x75, 0x21, 0x9d, 0x99, 0x18, 0x4a, 0x91,
+	0xab, 0xbc, 0x08, 0x87, 0xa4, 0xf1, 0x81, 0xb5,
+	0xb4, 0xb0, 0xfe, 0x6b, 0x9f, 0xbe, 0x19, 0x82,
+	0xd1, 0x50, 0xe1, 0x5e, 0x13, 0xb5, 0xc6, 0x2c,
+	0xa4, 0x82, 0xf2, 0x5c, 0xc3, 0x20, 0x41, 0x13,
+	0x56, 0x63, 0x3d, 0xec, 0x71, 0x2a, 0xbf, 0x2c,
+	0x60, 0x2f, 0x7a, 0x4d, 0xcb, 0x3f, 0x8b, 0xb9,
+	0x22, 0x9c, 0x28, 0x48, 0x16, 0x12, 0x1c, 0xd0,
+	0x00,
+#elif defined(DO_ZSTD)
+	0x28, 0xb5, 0x2f, 0xfd, 0x04, 0x58, 0x75, 0x04,
+	0x00, 0xb2, 0x4c, 0x20, 0x17, 0xa0, 0x25, 0x69,
+	0x03, 0xf0, 0xb2, 0x37, 0xb1, 0x5e, 0xb9, 0x24,
+	0x56, 0x5b, 0x52, 0x22, 0x39, 0x01, 0x44, 0x2b,
+	0x03, 0x55, 0xe3, 0x47,	0x03, 0x12, 0x9a, 0xe1,
+	0xf0, 0x94, 0x0b, 0xe5, 0xe2, 0xba, 0x7e, 0xfe,
+	0x9c, 0xc7, 0x61, 0x43, 0xc8, 0xfa, 0xf0, 0x3a,
+	0xfa, 0x51, 0xaa, 0x50,	0xa6, 0x2d, 0x9a, 0x78,
+	0xce, 0x2f, 0x61, 0x20, 0x6c, 0x7e, 0x35, 0x60,
+	0xfb, 0xdd, 0x4c, 0x63, 0xfb, 0x95, 0x35, 0xc0,
+	0x82, 0x59, 0xc2, 0xc9,	0x78, 0x6e, 0x30, 0xe6,
+	0xd2, 0x72, 0x15, 0x14, 0x18, 0x62, 0x5d, 0xeb,
+	0x2d, 0x9d, 0x3e, 0xee, 0x2e, 0x58, 0x58, 0xe9,
+	0x40, 0x68, 0xb9, 0x2f,	0x23, 0x99, 0x2a, 0x4d,
+	0xe8, 0x49, 0x79, 0x70, 0x1f, 0xf9, 0xe2, 0x34,
+	0x2e, 0xab, 0xa5, 0xa3, 0xf2, 0x70, 0x98, 0xd0,
+	0xb2, 0xb1, 0x3e, 0x5d,	0x90, 0x20, 0xd9, 0x36,
+	0x8b, 0xdb, 0xaa, 0x20, 0x40, 0x03, 0x14, 0x06,
+	0x03, 0x16, 0x2a, 0x9d, 0x31, 0xbd, 0x28, 0x3b,
+	0x0c, 0xac, 0x41,
+	0x28, 0xb5, 0x2f, 0xfd, 0x04, 0x58, 0xbd, 0x04,
+	0x00, 0x62, 0xcd, 0x22, 0x19, 0xa0, 0x25, 0x69,
+	0x03, 0x60, 0x72, 0xc9, 0x36, 0xda, 0xd2, 0x8b,
+	0xfc, 0xbf, 0x25, 0x42, 0xa9, 0x82, 0x38, 0x70,
+	0x1a, 0x2e, 0x54, 0x95,	0x33, 0x02, 0x03, 0x51,
+	0x36, 0x51, 0x80, 0xcc, 0x7a, 0x6e, 0x52, 0x2e,
+	0x75, 0x64, 0x2d, 0x33, 0x2c, 0xd6, 0xdb, 0xfc,
+	0x39, 0x31, 0xd5, 0xa8,	0xa2, 0x40, 0xd7, 0x12,
+	0x4c, 0xc6, 0x76, 0xdc, 0x1e, 0x0f, 0xf4, 0x4e,
+	0x0a, 0xd3, 0x0c, 0x87, 0x67, 0x25, 0x25, 0x52,
+	0x66, 0x87, 0x95, 0xc6,	0x69, 0x0c, 0xb4, 0x5e,
+	0x1d, 0xe7, 0x5e, 0xcd, 0x47, 0x41, 0x80, 0x89,
+	0x5c, 0xa5, 0x4a, 0x32, 0x26, 0xb3, 0x3d, 0x2b,
+	0xd5, 0xc0, 0x16, 0xde,	0xfb, 0x65, 0xcd, 0x6a,
+	0x0c, 0x3f, 0xe7, 0xd6, 0xb2, 0x17, 0x7c, 0x25,
+	0x35, 0x6b, 0x58, 0xf0, 0x95, 0xb5, 0xf2, 0xe4,
+	0x4e, 0xf0, 0x34, 0x4f,	0x5f, 0x39, 0xd1, 0x90,
+	0xf8, 0xb9, 0x59, 0xbe, 0x2e, 0xf9, 0xd4, 0x02,
+	0x98, 0x50, 0x5a, 0xc2, 0xcf, 0xe1, 0x08, 0x02,
+	0x00, 0x0f, 0x1e, 0x44,	0x40, 0x79, 0x50, 0x67,
+	0x3d, 0xd3, 0x35, 0x8f,
+#elif defined(DO_GZIP)
+	0,
+#endif
+};
+
+static const char orig[] =
+"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod\n"
+"tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,\n"
+"quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo\n"
+"consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse\n"
+"cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non\n"
+"proident, sunt in culpa qui officia deserunt mollit anim id est laborum.\n";
+
+#endif /* BLOB_H */
diff --git a/lib/xfrm/test/unpack.c b/lib/xfrm/test/unpack.c
index ca51f10..feb296c 100644
--- a/lib/xfrm/test/unpack.c
+++ b/lib/xfrm/test/unpack.c
@@ -7,336 +7,7 @@
 #include "xfrm/compress.h"
 #include "xfrm/stream.h"
 #include "util/test.h"
-
-static const sqfs_u8 blob_in[] = {
-#if defined(DO_XZ)
-	0xfd, 0x37, 0x7a, 0x58, 0x5a, 0x00, 0x00, 0x00,
-	0xff, 0x12, 0xd9, 0x41, 0x02, 0x00, 0x21, 0x01,
-	0x1c, 0x00, 0x00, 0x00, 0x10, 0xcf, 0x58, 0xcc,
-	0xe0, 0x01, 0xbd, 0x01, 0x43, 0x5d, 0x00, 0x26,
-	0x1b, 0xca, 0x46, 0x67, 0x5a, 0xf2, 0x77, 0xb8,
-	0x7d, 0x86, 0xd8, 0x41, 0xdb, 0x05, 0x35, 0xcd,
-	0x83, 0xa5, 0x7c, 0x12, 0xa5, 0x05, 0xdb, 0x90,
-	0xbd, 0x2f, 0x14, 0xd3, 0x71, 0x72, 0x96, 0xa8,
-	0x8a, 0x7d, 0x84, 0x56, 0x71, 0x8d, 0x6a, 0x22,
-	0x98, 0xab, 0x9e, 0x3d, 0xc3, 0x55, 0xef, 0xcc,
-	0xa5, 0xc3, 0xdd, 0x5b, 0x8e, 0xbf, 0x03, 0x81,
-	0x21, 0x40, 0xd6, 0x26, 0x91, 0x02, 0x45, 0x4e,
-	0x20, 0x91, 0xcf, 0x8c, 0x51, 0x22, 0x02, 0x70,
-	0xba, 0x05, 0x6b, 0x83, 0xef, 0x3f, 0x8e, 0x09,
-	0xef, 0x88, 0xf5, 0x37, 0x1b, 0x89, 0x8d, 0xff,
-	0x1e, 0xee, 0xe8, 0xb0, 0xac, 0xf2, 0x6e, 0xd4,
-	0x3e, 0x25, 0xaf, 0xa0, 0x6d, 0x2e, 0xc0, 0x7f,
-	0xb5, 0xa0, 0xcb, 0x90, 0x1f, 0x08, 0x1a, 0xe2,
-	0x90, 0x20, 0x19, 0x71, 0x0c, 0xe8, 0x3f, 0xe5,
-	0x39, 0xeb, 0x9a, 0x62, 0x4f, 0x06, 0xda, 0x3c,
-	0x32, 0x59, 0xcc, 0x83, 0xe3, 0x83, 0x0f, 0x38,
-	0x7d, 0x43, 0x37, 0x6c, 0x0b, 0x05, 0x65, 0x98,
-	0x25, 0xdb, 0xf2, 0xc0, 0x2d, 0x39, 0x36, 0x5d,
-	0xd4, 0xb6, 0xc2, 0x79, 0x73, 0x3e, 0xc2, 0x6e,
-	0x54, 0xec, 0x78, 0x2b, 0x5d, 0xf1, 0xd1, 0xb4,
-	0xb3, 0xcd, 0xf3, 0x89, 0xf5, 0x81, 0x3e, 0x2c,
-	0x65, 0xd6, 0x73, 0xd3, 0x1b, 0x20, 0x68, 0x0c,
-	0x93, 0xd4, 0xfc, 0x9f, 0xf8, 0xa7, 0xd4, 0xfa,
-	0x3a, 0xb1, 0x13, 0x93, 0x4b, 0xec, 0x78, 0x7d,
-	0x5c, 0x81, 0x80, 0xe5, 0x14, 0x78, 0xfe, 0x7e,
-	0xde, 0xf7, 0xad, 0x9e, 0x84, 0xba, 0xf1, 0x00,
-	0xe9, 0xbd, 0x2c, 0xf4, 0x70, 0x7d, 0xbe, 0x29,
-	0xb9, 0xf0, 0x10, 0xb9, 0x01, 0xf1, 0x76, 0x8a,
-	0x5a, 0xad, 0x02, 0xa1, 0x32, 0xc8, 0x53, 0x59,
-	0x11, 0x4c, 0xe2, 0x98, 0x34, 0xd9, 0x23, 0x51,
-	0x4a, 0x40, 0x2b, 0x87, 0x41, 0xdd, 0x50, 0xcd,
-	0x98, 0x1e, 0x29, 0x86, 0x23, 0x93, 0x3e, 0x9b,
-	0x6b, 0x16, 0xa1, 0x40, 0xac, 0xe7, 0x40, 0xfe,
-	0xa9, 0x87, 0x48, 0x25, 0x52, 0x02, 0x8b, 0xc4,
-	0x68, 0x08, 0x5a, 0x62, 0xc1, 0xb2, 0x07, 0x3b,
-	0x26, 0x1e, 0x59, 0x5c, 0x47, 0x24, 0xae, 0x8e,
-	0xe5, 0xf7, 0xe6, 0x4b, 0x13, 0xb4, 0x6d, 0x46,
-	0x65, 0x4f, 0xd0, 0x48, 0xcc, 0x51, 0x4b, 0x80,
-	0xcb, 0xf1, 0xd4, 0x6c, 0x45, 0x98, 0x92, 0x47,
-	0xeb, 0x60, 0x00, 0x00, 0x00, 0x01, 0xd7, 0x02,
-	0xbe, 0x03, 0x00, 0x00, 0xda, 0x2c, 0x45, 0x49,
-	0xa8, 0x00, 0x0a, 0xfc, 0x02, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x59, 0x5a
-#elif defined(DO_BZIP2)
-	0x42, 0x5a, 0x68, 0x39, 0x31, 0x41, 0x59, 0x26,
-	0x53, 0x59, 0x05, 0x24, 0x28, 0x04, 0x00, 0x00,
-	0x27, 0xd7, 0x80, 0x00, 0x10, 0x40, 0x05, 0x06,
-	0x04, 0x02, 0x00, 0x3f, 0xe7, 0xff, 0x40, 0x30,
-	0x01, 0x2d, 0x23, 0x62, 0x26, 0x05, 0x3d, 0x03,
-	0x54, 0xfd, 0x53, 0x4c, 0x86, 0x9e, 0x90, 0x6a,
-	0x9e, 0x9e, 0x85, 0x3c, 0xa0, 0x00, 0x00, 0x1a,
-	0x9e, 0x41, 0x13, 0x13, 0x28, 0x69, 0x03, 0xd4,
-	0x0f, 0x1c, 0x70, 0xd0, 0xb4, 0xe3, 0xe4, 0x75,
-	0x4e, 0x8b, 0x67, 0x43, 0x7b, 0x38, 0x27, 0x77,
-	0xe4, 0xc1, 0x98, 0x3a, 0x2d, 0x3a, 0xe4, 0x44,
-	0x98, 0xdc, 0x49, 0x8b, 0x22, 0x48, 0xfc, 0xc8,
-	0xe7, 0x57, 0x05, 0x3c, 0x5a, 0xee, 0x5a, 0x84,
-	0xcd, 0x7c, 0x8f, 0x26, 0x6b, 0x6e, 0xf7, 0xb5,
-	0x49, 0x1f, 0x79, 0x42, 0x5d, 0x09, 0x8c, 0xc6,
-	0xde, 0x0c, 0x0d, 0xb1, 0x46, 0xb4, 0xee, 0xd9,
-	0x8f, 0x33, 0x37, 0x04, 0xa9, 0x05, 0x49, 0xe3,
-	0x04, 0x16, 0x62, 0x36, 0x3a, 0x01, 0xda, 0xd4,
-	0xc8, 0x8a, 0x32, 0x02, 0x1f, 0x62, 0x4b, 0xa4,
-	0x49, 0x59, 0xda, 0x50, 0x85, 0x69, 0x35, 0x21,
-	0x10, 0xc6, 0x8a, 0x3c, 0x44, 0x95, 0xb0, 0xbc,
-	0xc5, 0x6b, 0xea, 0xfb, 0x40, 0xbd, 0x14, 0x01,
-	0x6a, 0xfa, 0xcd, 0x67, 0xd8, 0x2d, 0x93, 0x8b,
-	0xda, 0x44, 0x1b, 0xe9, 0x5a, 0x87, 0x60, 0xb0,
-	0xe0, 0x73, 0xd1, 0x01, 0x3a, 0x66, 0x05, 0xcc,
-	0x34, 0xa0, 0x63, 0x8d, 0x35, 0x5e, 0xa0, 0x9f,
-	0x05, 0x89, 0x15, 0x51, 0x48, 0x16, 0x0c, 0x61,
-	0xf4, 0x30, 0xb8, 0x07, 0x29, 0xc0, 0xf5, 0x1a,
-	0xe1, 0x0d, 0x6c, 0xfe, 0x91, 0xda, 0x13, 0x2f,
-	0x8e, 0x5b, 0x1c, 0xfc, 0xb3, 0xb2, 0x30, 0x9d,
-	0xf6, 0x09, 0x30, 0x55, 0x30, 0x67, 0xc2, 0x87,
-	0xe9, 0x9a, 0xd4, 0x1d, 0x66, 0x11, 0x54, 0x89,
-	0x21, 0xe1, 0x55, 0x84, 0xbf, 0xa6, 0x11, 0xa4,
-	0xb8, 0x40, 0xed, 0x42, 0x20, 0xb9, 0xb7, 0x26,
-	0x31, 0x14, 0x4f, 0x86, 0xdc, 0x50, 0x34, 0x38,
-	0x8b, 0x57, 0x77, 0x21, 0xf6, 0x89, 0xbd, 0xc5,
-	0x65, 0xc3, 0x23, 0x45, 0xec, 0x7f, 0x8b, 0xb9,
-	0x22, 0x9c, 0x28, 0x48, 0x02, 0x92, 0x14, 0x02,
-	0x00,
-#elif defined(DO_GZIP)
-	0x1f, 0x8b, 0x08, 0x08, 0xdb, 0xa1, 0x97, 0x63,
-	0x00, 0x03, 0x74, 0x65, 0x73, 0x74, 0x2e, 0x74,
-	0x78, 0x74, 0x00, 0x35, 0x90, 0xc1, 0x71, 0x43,
-	0x31, 0x08, 0x44, 0xef, 0xbf, 0x8a, 0x2d, 0x20,
-	0xf3, 0xab, 0x48, 0x6e, 0xb9, 0xa6, 0x00, 0x82,
-	0xb0, 0xc3, 0x8c, 0x24, 0x64, 0x09, 0x3c, 0x2e,
-	0x3f, 0xc8, 0x4e, 0x6e, 0x42, 0xc0, 0xb2, 0xfb,
-	0x3e, 0x6d, 0x4a, 0x83, 0x8e, 0x15, 0x0d, 0xc5,
-	0xaa, 0x4d, 0x2c, 0x75, 0x50, 0x13, 0x7f, 0x03,
-	0x5b, 0x5f, 0xc2, 0x2e, 0x1e, 0x13, 0x54, 0x74,
-	0xe8, 0x62, 0xed, 0x57, 0x48, 0xd5, 0x6c, 0x2e,
-	0x29, 0xb9, 0x00, 0xd1, 0x58, 0xcd, 0xca, 0xe1,
-	0xd2, 0x46, 0x2e, 0x6b, 0x67, 0x2d, 0x5a, 0xa2,
-	0x3b, 0xc2, 0x51, 0xe9, 0x3b, 0xe5, 0x21, 0xfe,
-	0x92, 0x16, 0x34, 0xba, 0x76, 0x02, 0x55, 0xbd,
-	0x05, 0x9d, 0xf8, 0x72, 0x48, 0xd7, 0x96, 0xda,
-	0x68, 0xba, 0x1f, 0xf7, 0x2c, 0xa9, 0xbd, 0x1d,
-	0xb7, 0xd0, 0x85, 0x6e, 0xcb, 0x67, 0x14, 0xc8,
-	0x43, 0x26, 0xab, 0x93, 0xab, 0x75, 0x44, 0xad,
-	0xd4, 0xd8, 0x5e, 0xca, 0x7b, 0x48, 0x97, 0xee,
-	0x4b, 0x4f, 0x49, 0x1d, 0x39, 0x0c, 0xa1, 0x34,
-	0xde, 0xd2, 0x93, 0x1d, 0xcf, 0x00, 0x79, 0xca,
-	0x4f, 0xbc, 0x6f, 0x49, 0x0a, 0x17, 0xe8, 0x8c,
-	0x74, 0xf2, 0xca, 0xaa, 0x1d, 0x53, 0xc6, 0x94,
-	0x1f, 0xe9, 0x45, 0x66, 0x06, 0xcf, 0x8f, 0xbb,
-	0xd5, 0x18, 0x79, 0x4e, 0xd2, 0x4e, 0x26, 0x85,
-	0xac, 0x25, 0x07, 0x6b, 0xad, 0xff, 0x84, 0x32,
-	0x50, 0xe0, 0x12, 0x57, 0x25, 0x47, 0xdf, 0x86,
-	0x30, 0x68, 0x66, 0x11, 0xf3, 0xc4, 0xc7, 0x83,
-	0x65, 0xb8, 0xc4, 0xc6, 0x98, 0x0c, 0x8c, 0x99,
-	0x84, 0x73, 0x8e, 0x63, 0x68, 0x21, 0xdf, 0x1b,
-	0xd6, 0x8f, 0x31, 0x4d, 0x8b, 0xf4, 0x4d, 0x71,
-	0x93, 0xca, 0xa3, 0x1c, 0x75, 0x10, 0x32, 0x02,
-	0xec, 0x72, 0x51, 0x56, 0x42, 0x91, 0x25, 0x73,
-	0x77, 0x9b, 0xd5, 0x6d, 0x83, 0x36, 0x20, 0x4d,
-	0x1c, 0xeb, 0x8f, 0x6b, 0xb4, 0xf3, 0xf8, 0x05,
-	0x6b, 0x8b, 0x8b, 0x20, 0xbe, 0x01, 0x00, 0x00,
-#elif defined(DO_ZSTD)
-	0x28, 0xb5, 0x2f, 0xfd, 0x04, 0x88, 0xa5, 0x08,
-	0x00, 0x46, 0x97, 0x3a, 0x1a, 0x80, 0x37, 0xcd,
-	0x01, 0xc0, 0x8a, 0xec, 0xfe, 0x2d, 0xf2, 0xb9,
-	0x44, 0x6b, 0xb9, 0x24, 0x77, 0x56, 0x5a, 0x33,
-	0x17, 0x0b, 0x67, 0x83, 0x2e, 0x47, 0x07, 0x31,
-	0x00, 0x32, 0x00, 0x33, 0x00, 0xc5, 0x2c, 0x5a,
-	0x92, 0x93, 0x0f, 0x7b, 0xd1, 0x1d, 0x63, 0x2c,
-	0xc8, 0x99, 0x94, 0x77, 0x8f, 0x94, 0x38, 0x75,
-	0x80, 0x2f, 0xae, 0xc1, 0x3e, 0xd2, 0xcf, 0x49,
-	0x15, 0x25, 0x1a, 0x87, 0x93, 0xdd, 0xe8, 0x00,
-	0x6d, 0xaa, 0xf8, 0x54, 0x74, 0xe5, 0x48, 0x4d,
-	0xa6, 0xf3, 0x1a, 0xa3, 0x13, 0x08, 0xe5, 0x26,
-	0xdc, 0x73, 0xcc, 0x3e, 0xfd, 0x86, 0xa9, 0x52,
-	0xb2, 0x76, 0xc7, 0xc2, 0x0f, 0xe4, 0x84, 0x4b,
-	0x12, 0x61, 0x3a, 0x6b, 0x7a, 0x1e, 0x8a, 0x81,
-	0xa9, 0x9b, 0x11, 0x37, 0x25, 0x55, 0x73, 0x73,
-	0x71, 0xa0, 0x84, 0xca, 0xc3, 0x4b, 0xb5, 0xcc,
-	0x50, 0xa6, 0x46, 0xd7, 0xe8, 0x08, 0xaa, 0x04,
-	0x28, 0xb1, 0x8e, 0xea, 0xb4, 0x4a, 0x49, 0x2b,
-	0xd6, 0x0d, 0x59, 0x68, 0xda, 0x64, 0x29, 0x1f,
-	0x85, 0x53, 0x72, 0xf1, 0xc5, 0x88, 0x1a, 0x0b,
-	0x4f, 0x96, 0x43, 0xe0, 0x91, 0x89, 0xb9, 0xc0,
-	0xe8, 0x18, 0xd5, 0x6e, 0x94, 0xe8, 0x35, 0x66,
-	0x01, 0x94, 0x80, 0x95, 0x87, 0xe2, 0xc8, 0x19,
-	0x73, 0xa3, 0x01, 0x05, 0xc1, 0x64, 0x72, 0xc9,
-	0x6b, 0x6e, 0x55, 0x7c, 0x29, 0x67, 0x90, 0x93,
-	0x49, 0xeb, 0xe3, 0x85, 0xc2, 0xf5, 0x79, 0x68,
-	0x9d, 0x92, 0xc3, 0x32, 0x75, 0x80, 0x66, 0xf2,
-	0x43, 0xa7, 0xb0, 0xc3, 0x22, 0x3f, 0x39, 0x8a,
-	0x35, 0x5c, 0x63, 0x5c, 0xd1, 0x9e, 0x8a, 0xd2,
-	0x78, 0x3c, 0x12, 0x01, 0x25, 0x04, 0x0e, 0x08,
-	0x10, 0x88, 0xb6, 0x1b, 0xb7, 0x96, 0x35, 0xa8,
-	0x0d, 0x1e, 0xae, 0xac, 0x4a, 0x70, 0xa5, 0x31,
-	0xd0, 0x0c, 0x78, 0xbf, 0xdd, 0xc5, 0x24, 0x3e,
-	0xcb, 0x0a, 0x0a, 0x69, 0x40, 0xba, 0xb0, 0xc4,
-	0x2a, 0x9b, 0x1e, 0x0a, 0x51, 0xa6, 0x16, 0x98,
-	0x76,
-#endif
-};
-
-static const sqfs_u8 blob_in_concat[] = {
-#if defined(DO_XZ)
-	0xfd, 0x37, 0x7a, 0x58, 0x5a, 0x00, 0x00, 0x04,
-	0xe6, 0xd6, 0xb4, 0x46, 0x02, 0x00, 0x21, 0x01,
-	0x16, 0x00, 0x00, 0x00, 0x74, 0x2f, 0xe5, 0xa3,
-	0xe0, 0x00, 0xdc, 0x00, 0xb3, 0x5d, 0x00, 0x26,
-	0x1b, 0xca, 0x46, 0x67, 0x5a, 0xf2, 0x77, 0xb8,
-	0x7d, 0x86, 0xd8, 0x41, 0xdb, 0x05, 0x35, 0xcd,
-	0x83, 0xa5, 0x7c, 0x12, 0xa5, 0x05, 0xdb, 0x90,
-	0xbd, 0x2f, 0x14, 0xd3, 0x71, 0x72, 0x96, 0xa8,
-	0x8a, 0x7d, 0x84, 0x56, 0x71, 0x8d, 0x6a, 0x22,
-	0x98, 0xab, 0x9e, 0x3d, 0xc3, 0x55, 0xef, 0xcc,
-	0xa5, 0xc3, 0xdd, 0x5b, 0x8e, 0xbf, 0x03, 0x81,
-	0x21, 0x40, 0xd6, 0x26, 0x91, 0x02, 0x45, 0x4e,
-	0x20, 0x91, 0xcf, 0x8c, 0x51, 0x22, 0x02, 0x70,
-	0xba, 0x05, 0x6b, 0x83, 0xef, 0x3f, 0x8e, 0x09,
-	0xef, 0x88, 0xf5, 0x37, 0x1b, 0x89, 0x8d, 0xff,
-	0x1e, 0xee, 0xe8, 0xb0, 0xac, 0xf2, 0x6e, 0xd4,
-	0x3e, 0x25, 0xaf, 0xa0, 0x6d, 0x2e, 0xc0, 0x7f,
-	0xb5, 0xa0, 0xcb, 0x90, 0x1f, 0x08, 0x1a, 0xe2,
-	0x90, 0x20, 0x19, 0x71, 0x0c, 0xe8, 0x3f, 0xe5,
-	0x39, 0xeb, 0x9a, 0x62, 0x4f, 0x06, 0xda, 0x3c,
-	0x32, 0x59, 0xcc, 0x83, 0xe3, 0x83, 0x0f, 0x38,
-	0x7d, 0x43, 0x37, 0x6c, 0x0b, 0x05, 0x65, 0x98,
-	0x25, 0xdb, 0xf2, 0xc0, 0x2d, 0x39, 0x36, 0x5d,
-	0xd4, 0xb6, 0xc2, 0x79, 0x73, 0x3e, 0xc2, 0x6e,
-	0x54, 0xec, 0x78, 0x2b, 0x5d, 0xf1, 0xd1, 0xb4,
-	0xb3, 0xcd, 0xf3, 0x89, 0xf5, 0x80, 0x79, 0x46,
-	0xc0, 0x00, 0x00, 0x00, 0xc4, 0xf5, 0x1d, 0x08,
-	0xf0, 0x34, 0x3a, 0x59, 0x00, 0x01, 0xcf, 0x01,
-	0xdd, 0x01, 0x00, 0x00, 0x7f, 0x5a, 0x77, 0xcb,
-	0xb1, 0xc4, 0x67, 0xfb, 0x02, 0x00, 0x00, 0x00,
-	0x00, 0x04, 0x59, 0x5a,
-	0xfd, 0x37, 0x7a, 0x58, 0x5a, 0x00, 0x00, 0x04,
-	0xe6, 0xd6, 0xb4, 0x46, 0x02, 0x00, 0x21, 0x01,
-	0x16, 0x00, 0x00, 0x00, 0x74, 0x2f, 0xe5, 0xa3,
-	0xe0, 0x00, 0xe0, 0x00, 0xb7, 0x5d, 0x00, 0x31,
-	0x9b, 0xca, 0x19, 0xc5, 0x54, 0xec, 0xb6, 0x54,
-	0xe7, 0xb1, 0x7d, 0xc4, 0x57, 0x9e, 0x6c, 0x89,
-	0xad, 0x4a, 0x6d, 0x16, 0xd8, 0x3c, 0x05, 0x94,
-	0x10, 0x16, 0x99, 0x38, 0x21, 0xa3, 0xb9, 0xc5,
-	0x80, 0xff, 0xfc, 0xee, 0xd4, 0xd5, 0x3f, 0xdd,
-	0x8c, 0xd7, 0x3d, 0x8f, 0x76, 0xec, 0x96, 0x9d,
-	0x20, 0xac, 0xcb, 0x18, 0xf5, 0xb2, 0x9c, 0x12,
-	0xf6, 0x7c, 0x33, 0xdc, 0x4f, 0x9a, 0xe5, 0x2d,
-	0x63, 0x68, 0xa4, 0x2b, 0x1d, 0x0a, 0x1e, 0xf0,
-	0xfe, 0x73, 0xf2, 0x5f, 0x7b, 0xb4, 0xea, 0x54,
-	0xad, 0x27, 0xd1, 0xff, 0xb6, 0x50, 0x06, 0x7b,
-	0x51, 0x3f, 0x25, 0x8a, 0xcf, 0x4c, 0x03, 0x3e,
-	0xc3, 0xad, 0x47, 0x34, 0xcf, 0xba, 0x45, 0x79,
-	0xd0, 0x7b, 0xf6, 0x66, 0x63, 0xc0, 0xc6, 0x69,
-	0xa7, 0x51, 0x84, 0xa8, 0xa0, 0x0b, 0xbc, 0x6f,
-	0x13, 0x89, 0xd6, 0x5e, 0xac, 0xca, 0x2f, 0xd2,
-	0xe7, 0xe1, 0x1e, 0x78, 0x22, 0x3a, 0x59, 0x6c,
-	0x9c, 0x8c, 0x65, 0xf1, 0x5b, 0xf4, 0xbf, 0xd5,
-	0xdc, 0x05, 0xeb, 0x70, 0x10, 0xb8, 0x6c, 0xf2,
-	0x13, 0x20, 0xb0, 0xdd, 0x3e, 0xb2, 0x92, 0x5b,
-	0xa3, 0xf7, 0x94, 0xa1, 0xa1, 0x74, 0x36, 0x9a,
-	0xf1, 0xd8, 0xc2, 0xf0, 0xc6, 0x29, 0x7e, 0x85,
-	0x28, 0xf5, 0xf2, 0x21, 0x00, 0x00, 0x00, 0x00,
-	0xc8, 0x80, 0x67, 0x40, 0xc3, 0xaa, 0x17, 0x57,
-	0x00, 0x01, 0xd3, 0x01, 0xe1, 0x01, 0x00, 0x00,
-	0x86, 0xdf, 0x9e, 0x05, 0xb1, 0xc4, 0x67, 0xfb,
-	0x02, 0x00, 0x00, 0x00, 0x00, 0x04, 0x59, 0x5a
-#elif defined(DO_BZIP2)
-	0x42, 0x5a, 0x68, 0x39, 0x31, 0x41, 0x59, 0x26,
-	0x53, 0x59, 0x5d, 0x09, 0x24, 0x1d, 0x00, 0x00,
-	0x13, 0xd7, 0x80, 0x00, 0x10, 0x40, 0x05, 0x00,
-	0x04, 0x02, 0x00, 0x3e, 0xa7, 0xff, 0x40, 0x30,
-	0x00, 0xac, 0x43, 0x54, 0xf5, 0x36, 0x4c, 0xa7,
-	0xa8, 0xd3, 0x6a, 0x60, 0x81, 0x40, 0x00, 0xd0,
-	0x32, 0x64, 0x0d, 0x53, 0xda, 0x02, 0x09, 0xa2,
-	0x68, 0x34, 0xd1, 0x27, 0x4a, 0xdd, 0xf2, 0x0a,
-	0x73, 0x43, 0xf9, 0xa2, 0x51, 0x85, 0x76, 0x45,
-	0x9a, 0x68, 0x3a, 0xe7, 0x0d, 0xc0, 0x21, 0x4a,
-	0xc4, 0xf9, 0xf7, 0x40, 0xc3, 0x10, 0xb2, 0x9b,
-	0x58, 0x56, 0x71, 0x50, 0x2f, 0xa4, 0xc5, 0x61,
-	0x19, 0xf6, 0x59, 0x06, 0x82, 0x03, 0x7f, 0xeb,
-	0xd2, 0x61, 0x88, 0xcd, 0xe8, 0xf7, 0xe8, 0x87,
-	0x59, 0x9d, 0xe1, 0xf8, 0x19, 0x6e, 0xad, 0x77,
-	0xbf, 0x34, 0x17, 0x21, 0x6b, 0x91, 0xc9, 0x52,
-	0xd0, 0x81, 0x1e, 0xb5, 0x0b, 0xee, 0x42, 0x84,
-	0x80, 0xd5, 0xa1, 0x8a, 0x04, 0x18, 0x4d, 0xf3,
-	0xda, 0x7e, 0x3c, 0x40, 0xa4, 0xdb, 0xe5, 0xf0,
-	0x37, 0x40, 0x3a, 0x7d, 0xa7, 0x45, 0x21, 0xf2,
-	0x5a, 0x7b, 0x59, 0x56, 0x16, 0xd5, 0xac, 0x9f,
-	0x60, 0x85, 0x0e, 0xf5, 0x73, 0xd9, 0x47, 0xe2,
-	0xee, 0x48, 0xa7, 0x0a, 0x12, 0x0b, 0xa1, 0x24,
-	0x83, 0xa0,
-	0x42, 0x5a, 0x68, 0x39, 0x31, 0x41, 0x59, 0x26,
-	0x53, 0x59, 0x2c, 0x24, 0x39, 0xa0, 0x00, 0x00,
-	0x1f, 0x55, 0x80, 0x00, 0x10, 0x40, 0x05, 0x06,
-	0x00, 0x3f, 0xe7, 0xff, 0x40, 0x30, 0x00, 0xb5,
-	0x91, 0x13, 0x4f, 0x54, 0x7a, 0x6a, 0x6d, 0x4d,
-	0xa2, 0x68, 0x0c, 0x84, 0x53, 0xf5, 0x30, 0x89,
-	0xa3, 0xd4, 0x0d, 0x0f, 0x49, 0xa0, 0xd4, 0xf4,
-	0xd1, 0x53, 0xf4, 0x93, 0x69, 0x3c, 0x81, 0x1a,
-	0x65, 0x53, 0x90, 0x51, 0x07, 0x2a, 0xad, 0x8f,
-	0x63, 0xba, 0x25, 0xc2, 0x0c, 0x8b, 0xb9, 0x95,
-	0x15, 0xd8, 0xda, 0x61, 0x5c, 0xa9, 0xe4, 0x0b,
-	0x21, 0xc9, 0x97, 0x57, 0x01, 0x28, 0x9b, 0xfb,
-	0x94, 0xb9, 0x48, 0xa3, 0x0a, 0xc6, 0x1c, 0x54,
-	0x98, 0x9a, 0x39, 0xc3, 0x87, 0x90, 0x33, 0x58,
-	0x2d, 0x3e, 0x16, 0xb1, 0xae, 0x26, 0x89, 0x75,
-	0xf5, 0x77, 0xa5, 0x8e, 0x5b, 0x8c, 0x8a, 0x39,
-	0xbd, 0x75, 0x21, 0x9d, 0x99, 0x18, 0x4a, 0x91,
-	0xab, 0xbc, 0x08, 0x87, 0xa4, 0xf1, 0x81, 0xb5,
-	0xb4, 0xb0, 0xfe, 0x6b, 0x9f, 0xbe, 0x19, 0x82,
-	0xd1, 0x50, 0xe1, 0x5e, 0x13, 0xb5, 0xc6, 0x2c,
-	0xa4, 0x82, 0xf2, 0x5c, 0xc3, 0x20, 0x41, 0x13,
-	0x56, 0x63, 0x3d, 0xec, 0x71, 0x2a, 0xbf, 0x2c,
-	0x60, 0x2f, 0x7a, 0x4d, 0xcb, 0x3f, 0x8b, 0xb9,
-	0x22, 0x9c, 0x28, 0x48, 0x16, 0x12, 0x1c, 0xd0,
-	0x00,
-#elif defined(DO_ZSTD)
-	0x28, 0xb5, 0x2f, 0xfd, 0x04, 0x58, 0x75, 0x04,
-	0x00, 0xb2, 0x4c, 0x20, 0x17, 0xa0, 0x25, 0x69,
-	0x03, 0xf0, 0xb2, 0x37, 0xb1, 0x5e, 0xb9, 0x24,
-	0x56, 0x5b, 0x52, 0x22, 0x39, 0x01, 0x44, 0x2b,
-	0x03, 0x55, 0xe3, 0x47,	0x03, 0x12, 0x9a, 0xe1,
-	0xf0, 0x94, 0x0b, 0xe5, 0xe2, 0xba, 0x7e, 0xfe,
-	0x9c, 0xc7, 0x61, 0x43, 0xc8, 0xfa, 0xf0, 0x3a,
-	0xfa, 0x51, 0xaa, 0x50,	0xa6, 0x2d, 0x9a, 0x78,
-	0xce, 0x2f, 0x61, 0x20, 0x6c, 0x7e, 0x35, 0x60,
-	0xfb, 0xdd, 0x4c, 0x63, 0xfb, 0x95, 0x35, 0xc0,
-	0x82, 0x59, 0xc2, 0xc9,	0x78, 0x6e, 0x30, 0xe6,
-	0xd2, 0x72, 0x15, 0x14, 0x18, 0x62, 0x5d, 0xeb,
-	0x2d, 0x9d, 0x3e, 0xee, 0x2e, 0x58, 0x58, 0xe9,
-	0x40, 0x68, 0xb9, 0x2f,	0x23, 0x99, 0x2a, 0x4d,
-	0xe8, 0x49, 0x79, 0x70, 0x1f, 0xf9, 0xe2, 0x34,
-	0x2e, 0xab, 0xa5, 0xa3, 0xf2, 0x70, 0x98, 0xd0,
-	0xb2, 0xb1, 0x3e, 0x5d,	0x90, 0x20, 0xd9, 0x36,
-	0x8b, 0xdb, 0xaa, 0x20, 0x40, 0x03, 0x14, 0x06,
-	0x03, 0x16, 0x2a, 0x9d, 0x31, 0xbd, 0x28, 0x3b,
-	0x0c, 0xac, 0x41,
-	0x28, 0xb5, 0x2f, 0xfd, 0x04, 0x58, 0xbd, 0x04,
-	0x00, 0x62, 0xcd, 0x22, 0x19, 0xa0, 0x25, 0x69,
-	0x03, 0x60, 0x72, 0xc9, 0x36, 0xda, 0xd2, 0x8b,
-	0xfc, 0xbf, 0x25, 0x42, 0xa9, 0x82, 0x38, 0x70,
-	0x1a, 0x2e, 0x54, 0x95,	0x33, 0x02, 0x03, 0x51,
-	0x36, 0x51, 0x80, 0xcc, 0x7a, 0x6e, 0x52, 0x2e,
-	0x75, 0x64, 0x2d, 0x33, 0x2c, 0xd6, 0xdb, 0xfc,
-	0x39, 0x31, 0xd5, 0xa8,	0xa2, 0x40, 0xd7, 0x12,
-	0x4c, 0xc6, 0x76, 0xdc, 0x1e, 0x0f, 0xf4, 0x4e,
-	0x0a, 0xd3, 0x0c, 0x87, 0x67, 0x25, 0x25, 0x52,
-	0x66, 0x87, 0x95, 0xc6,	0x69, 0x0c, 0xb4, 0x5e,
-	0x1d, 0xe7, 0x5e, 0xcd, 0x47, 0x41, 0x80, 0x89,
-	0x5c, 0xa5, 0x4a, 0x32, 0x26, 0xb3, 0x3d, 0x2b,
-	0xd5, 0xc0, 0x16, 0xde,	0xfb, 0x65, 0xcd, 0x6a,
-	0x0c, 0x3f, 0xe7, 0xd6, 0xb2, 0x17, 0x7c, 0x25,
-	0x35, 0x6b, 0x58, 0xf0, 0x95, 0xb5, 0xf2, 0xe4,
-	0x4e, 0xf0, 0x34, 0x4f,	0x5f, 0x39, 0xd1, 0x90,
-	0xf8, 0xb9, 0x59, 0xbe, 0x2e, 0xf9, 0xd4, 0x02,
-	0x98, 0x50, 0x5a, 0xc2, 0xcf, 0xe1, 0x08, 0x02,
-	0x00, 0x0f, 0x1e, 0x44,	0x40, 0x79, 0x50, 0x67,
-	0x3d, 0xd3, 0x35, 0x8f,
-#elif defined(DO_GZIP)
-	0,
-#endif
-};
+#include "blob.h"
 
 #if defined(DO_XZ)
 static size_t in_stop = 244;
@@ -357,14 +28,6 @@ static size_t out_stop = 446;
 #define mkdecompressor decompressor_stream_gzip_create
 #endif
 
-static const char orig[] =
-"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod\n"
-"tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,\n"
-"quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo\n"
-"consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse\n"
-"cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non\n"
-"proident, sunt in culpa qui officia deserunt mollit anim id est laborum.\n";
-
 int main(int argc, char **argv)
 {
 	sqfs_u32 in_diff = 0, out_diff = 0;
diff --git a/lib/xfrm/test/wrap.c b/lib/xfrm/test/wrap.c
new file mode 100644
index 0000000..70ed317
--- /dev/null
+++ b/lib/xfrm/test/wrap.c
@@ -0,0 +1,175 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * wrap.c
+ *
+ * Copyright (C) 2022 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "xfrm/compress.h"
+#include "xfrm/stream.h"
+#include "xfrm/wrap.h"
+#include "util/test.h"
+#include "sqfs/io.h"
+#include "common.h"
+#include "blob.h"
+
+#if defined(DO_XZ)
+#define mkdecompressor decompressor_stream_xz_create
+#define mkcompressor compressor_stream_xz_create
+#elif defined(DO_BZIP2)
+#define mkdecompressor decompressor_stream_bzip2_create
+#define mkcompressor compressor_stream_bzip2_create
+#elif defined(DO_ZSTD)
+#define mkdecompressor decompressor_stream_zstd_create
+#define mkcompressor compressor_stream_zstd_create
+#elif defined(DO_GZIP)
+#define mkdecompressor decompressor_stream_gzip_create
+#define mkcompressor compressor_stream_gzip_create
+#endif
+
+/*****************************************************************************/
+
+static size_t mo_written = 0;
+static sqfs_u8 mo_buffer[1024];
+static bool mo_flushed = false;
+
+static int mem_append(sqfs_ostream_t *strm, const void *data, size_t size);
+static int mem_flush(sqfs_ostream_t *strm);
+
+static sqfs_ostream_t mem_ostream = {
+	{ 1, NULL, NULL, },
+	mem_append,
+	mem_flush,
+	NULL,
+};
+
+static int mem_append(sqfs_ostream_t *strm, const void *data, size_t size)
+{
+	TEST_ASSERT(strm == &mem_ostream);
+	TEST_ASSERT(size > 0);
+
+	TEST_ASSERT(mo_written <= sizeof(mo_buffer));
+	TEST_ASSERT(size <= (sizeof(mo_buffer) - mo_written));
+
+	if (data == NULL) {
+		memset(mo_buffer + mo_written, 0, size);
+	} else {
+		memcpy(mo_buffer + mo_written, data, size);
+	}
+
+	mo_written += size;
+	return 0;
+}
+
+static int mem_flush(sqfs_ostream_t *strm)
+{
+	TEST_ASSERT(strm == &mem_ostream);
+	TEST_ASSERT(!mo_flushed);
+	mo_flushed = true;
+	return 0;
+}
+
+/*****************************************************************************/
+
+static void run_unpack_test(const void *blob, size_t size)
+{
+	sqfs_istream_t *istream, *mem_istream;
+	xfrm_stream_t *xfrm;
+	sqfs_s32 ret;
+	size_t i;
+	char c;
+
+	mem_istream = istream_memory_create("memstream", 7, blob, size);
+	TEST_NOT_NULL(mem_istream);
+
+	xfrm = mkdecompressor();
+	TEST_NOT_NULL(xfrm);
+	TEST_EQUAL_UI(((sqfs_object_t *)xfrm)->refcount, 1);
+	TEST_EQUAL_UI(((sqfs_object_t *)mem_istream)->refcount, 1);
+
+	istream = istream_xfrm_create(mem_istream, xfrm);
+
+	TEST_NOT_NULL(istream);
+	TEST_EQUAL_UI(((sqfs_object_t *)istream)->refcount, 1);
+	TEST_EQUAL_UI(((sqfs_object_t *)xfrm)->refcount, 2);
+	TEST_EQUAL_UI(((sqfs_object_t *)mem_istream)->refcount, 2);
+
+	for (i = 0; i < (sizeof(orig) - 1); ++i) {
+		ret = sqfs_istream_read(istream, &c, 1);
+		TEST_EQUAL_I(ret, 1);
+		TEST_EQUAL_I(c, orig[i]);
+	}
+
+	ret = sqfs_istream_read(istream, &c, 1);
+	TEST_EQUAL_I(ret, 0);
+
+	ret = sqfs_istream_read(istream, &c, 1);
+	TEST_EQUAL_I(ret, 0);
+
+	sqfs_drop(istream);
+	TEST_EQUAL_UI(((sqfs_object_t *)mem_istream)->refcount, 1);
+	TEST_EQUAL_UI(((sqfs_object_t *)xfrm)->refcount, 1);
+	sqfs_drop(xfrm);
+	sqfs_drop(mem_istream);
+}
+
+static void run_pack_test(void)
+{
+	sqfs_ostream_t *ostream;
+	xfrm_stream_t *xfrm;
+	size_t i;
+	int ret;
+
+	mo_written = 0;
+	mo_flushed = false;
+
+	xfrm = mkcompressor(NULL);
+	TEST_NOT_NULL(xfrm);
+	TEST_EQUAL_UI(((sqfs_object_t *)xfrm)->refcount, 1);
+	TEST_EQUAL_UI(((sqfs_object_t *)&mem_ostream)->refcount, 1);
+
+	ostream = ostream_xfrm_create(&mem_ostream, xfrm);
+
+	TEST_NOT_NULL(ostream);
+	TEST_EQUAL_UI(((sqfs_object_t *)ostream)->refcount, 1);
+	TEST_EQUAL_UI(((sqfs_object_t *)xfrm)->refcount, 2);
+	TEST_EQUAL_UI(((sqfs_object_t *)&mem_ostream)->refcount, 2);
+
+	for (i = 0; i < (sizeof(orig) - 1); ++i) {
+		ret = ostream->append(ostream, orig + i, 1);
+		TEST_EQUAL_I(ret, 0);
+	}
+
+	ret = ostream->flush(ostream);
+	TEST_EQUAL_I(ret, 0);
+
+	TEST_ASSERT(mo_flushed);
+	TEST_ASSERT(mo_written < sizeof(orig));
+	ret = memcmp(mo_buffer, orig, mo_written);
+	TEST_ASSERT(ret != 0);
+
+	sqfs_drop(ostream);
+	TEST_EQUAL_UI(((sqfs_object_t *)&mem_ostream)->refcount, 1);
+	TEST_EQUAL_UI(((sqfs_object_t *)xfrm)->refcount, 1);
+	sqfs_drop(xfrm);
+}
+
+int main(int argc, char **argv)
+{
+	(void)argc; (void)argv;
+
+	/* normal stream */
+	run_unpack_test(blob_in, sizeof(blob_in));
+
+	/* concatenated streams */
+#if !defined(DO_GZIP)
+	run_unpack_test(blob_in_concat, sizeof(blob_in_concat));
+#else
+	(void)blob_in_concat;
+#endif
+	/* compress */
+	run_pack_test();
+
+	/* restore from compressed */
+	run_unpack_test(mo_buffer, mo_written);
+	return EXIT_SUCCESS;
+}