{"id":2224590,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2224590/?format=json","web_url":"http://patchwork.ozlabs.org/project/swupdate/patch/20260417161524.2806435-5-hyyoxhk@163.com/","project":{"id":58,"url":"http://patchwork.ozlabs.org/api/1.2/projects/58/?format=json","name":"swupdate development","link_name":"swupdate","list_id":"swupdate.googlegroups.com","list_email":"swupdate@googlegroups.com","web_url":"https://github.com/sbabic/swupdate","scm_url":"git://github.com/sbabic/swupdate","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260417161524.2806435-5-hyyoxhk@163.com>","list_archive_url":null,"date":"2026-04-17T16:15:24","name":"[v1,4/4] compress: add lz4 decompression support","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"e01777625249d98e27033da5b91d32215c8e0b08","submitter":{"id":79707,"url":"http://patchwork.ozlabs.org/api/1.2/people/79707/?format=json","name":"He Yong","email":"hyyoxhk@163.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/swupdate/patch/20260417161524.2806435-5-hyyoxhk@163.com/mbox/","series":[{"id":500375,"url":"http://patchwork.ozlabs.org/api/1.2/series/500375/?format=json","web_url":"http://patchwork.ozlabs.org/project/swupdate/list/?series=500375","date":"2026-04-17T16:15:21","name":"Refactor image parsing and add LZ4 support","version":1,"mbox":"http://patchwork.ozlabs.org/series/500375/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2224590/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2224590/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=googlegroups.com header.i=@googlegroups.com\n header.a=rsa-sha256 header.s=20251104 header.b=ERvW8Aff;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=googlegroups.com\n (client-ip=2607:f8b0:4864:20::f3a; helo=mail-qv1-xf3a.google.com;\n envelope-from=swupdate+bncbaabb4ogrhhqmgqeilhtfny@googlegroups.com;\n receiver=patchwork.ozlabs.org)"],"Received":["from mail-qv1-xf3a.google.com (mail-qv1-xf3a.google.com\n [IPv6:2607:f8b0:4864:20::f3a])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fy1214cp9z2125\n\tfor ; Sat, 18 Apr 2026 02:44:41 +1000 (AEST)","by mail-qv1-xf3a.google.com with SMTP id\n 6a1803df08f44-8aca14d1faasf36689006d6.3\n for ;\n Fri, 17 Apr 2026 09:44:41 -0700 (PDT)","by 2002:a05:6214:2027:b0:89a:99a:dcce with SMTP id\n 6a1803df08f44-8ae820d92d1ls53658416d6.2.-pod-prod-04-us; Fri, 17 Apr 2026\n 09:44:32 -0700 (PDT)","by 2002:a05:6808:1d1e:b0:479:8e15:9311 with SMTP id\n 5614622812f47-4799c9889b1msb6e;\n Fri, 17 Apr 2026 09:15:35 -0700 (PDT)","from m16.mail.163.com (m16.mail.163.com. 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","To":"swupdate@googlegroups.com","Subject":"[swupdate] [PATCH v1 4/4] compress: add lz4 decompression support","Date":"Sat, 18 Apr 2026 00:15:24 +0800","Message-ID":"<20260417161524.2806435-5-hyyoxhk@163.com>","X-Mailer":"git-send-email 2.43.0","In-Reply-To":"<20260417161524.2806435-1-hyyoxhk@163.com>","References":"<20260417161524.2806435-1-hyyoxhk@163.com>","MIME-Version":"1.0","X-CM-TRANSID":"PSgvCgDnEgycXOJpPjUTAg--.9473S6","X-Coremail-Antispam":"1Uf129KBjvJXoWxtF4xZFW8AF17Gw4xGw17ZFb_yoWfWF18pF\n\ts3C3yfKryIgr1xZ3yxJF109rW3Kr18Cry5GryxJF1FyF15AwsYqr1ktrWrJFWUtrZ0va90\n\t93Wqgr9rAw4YyaUanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2\n\t9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x07UU-B_UUUUU=","X-Originating-IP":"[2408:8266:bb01:57f4:788f:a08d:bbc4:eabb]","X-CM-SenderInfo":"pk1105lkn6il2tof0z/xtbC8R1RJGniXJ1PrQAA3x","X-Original-Sender":"hyyoxhk@163.com","X-Original-Authentication-Results":"gmr-mx.google.com; dkim=pass\n header.i=@163.com header.s=s110527 header.b=FZ5o0wkQ; spf=pass\n (google.com: domain of hyyoxhk@163.com designates 220.197.31.2 as permitted\n sender) smtp.mailfrom=hyyoxhk@163.com; dmarc=pass (p=NONE sp=NONE\n dis=NONE) header.from=163.com","Content-Type":"text/plain; charset=\"UTF-8\"","Precedence":"list","Mailing-list":"list swupdate@googlegroups.com;\n contact swupdate+owners@googlegroups.com","List-ID":"","X-Google-Group-Id":"605343134186","List-Post":",\n ","List-Help":",\n ","List-Archive":",\n ","List-Unsubscribe":"\n ,\n "},"content":"Enable lz4 artifacts end-to-end by wiring parser mappings, runtime\ndecompression pipeline, build flags, and docs so compressed=\"lz4\"\nworks like existing codecs.\n\nSigned-off-by: He Yong \n---\n Kconfig | 8 +++\n Makefile.deps | 4 ++\n Makefile.flags | 4 ++\n ci/setup.sh | 1 +\n core/cpio_utils.c | 101 +++++++++++++++++++++++++++++++++-\n core/util.c | 1 +\n doc/source/sw-description.rst | 2 +-\n doc/source/swupdate.rst | 2 +-\n handlers/swupdate.lua | 2 +-\n include/util.h | 1 +\n 10 files changed, 120 insertions(+), 6 deletions(-)","diff":"diff --git a/Kconfig b/Kconfig\nindex 2cf68eb8..8b6139de 100644\n--- a/Kconfig\n+++ b/Kconfig\n@@ -85,6 +85,10 @@ config HAVE_ZSTD\n \tbool\n \toption env=\"HAVE_ZSTD\"\n \n+config HAVE_LZ4\n+\tbool\n+\toption env=\"HAVE_LZ4\"\n+\n config HAVE_LIBSSL\n \tbool\n \toption env=\"HAVE_LIBSSL\"\n@@ -421,6 +425,10 @@ config ZSTD\n \tbool \"Zstd compression support\"\n \tdepends on HAVE_ZSTD\n \n+config LZ4\n+\tbool \"LZ4 compression support\"\n+\tdepends on HAVE_LZ4\n+\n comment \"Parsers\"\n source \"parser/Kconfig\"\n \ndiff --git a/Makefile.deps b/Makefile.deps\nindex c759f687..35f1bd6b 100644\n--- a/Makefile.deps\n+++ b/Makefile.deps\n@@ -66,6 +66,10 @@ ifeq ($(HAVE_ZSTD),)\n export HAVE_ZSTD = y\n endif\n \n+ifeq ($(HAVE_LZ4),)\n+export HAVE_LZ4 = y\n+endif\n+\n ifeq ($(HAVE_LIBEXT2FS),)\n export HAVE_LIBEXT2FS = y\n endif\ndiff --git a/Makefile.flags b/Makefile.flags\nindex 40dd3b66..267d74ab 100644\n--- a/Makefile.flags\n+++ b/Makefile.flags\n@@ -197,6 +197,10 @@ ifeq ($(CONFIG_ZSTD),y)\n LDLIBS += zstd\n endif\n \n+ifeq ($(CONFIG_LZ4),y)\n+LDLIBS += lz4\n+endif\n+\n ifeq ($(CONFIG_DISKPART),y)\n LDLIBS += fdisk\n endif\ndiff --git a/ci/setup.sh b/ci/setup.sh\nindex 863b1c42..82aca63a 100755\n--- a/ci/setup.sh\n+++ b/ci/setup.sh\n@@ -51,6 +51,7 @@ $_SUDO apt-get -qq update && apt-get install --yes --no-install-recommends \\\n liburiparser-dev \\\n libwebsockets-dev \\\n \tliblzma-dev \\\n+ liblz4-dev \\\n libwolfssl-dev \\\n libzstd-dev \\\n make \\\ndiff --git a/core/cpio_utils.c b/core/cpio_utils.c\nindex cb291d3b..4a8b2964 100644\n--- a/core/cpio_utils.c\n+++ b/core/cpio_utils.c\n@@ -22,6 +22,9 @@\n #ifdef CONFIG_ZSTD\n #include \n #endif\n+#ifdef CONFIG_LZ4\n+#include \n+#endif\n \n #include \"generated/autoconf.h\"\n #include \"cpiohdr.h\"\n@@ -341,7 +344,7 @@ static int decrypt_step(void *state, void *buffer, size_t size)\n \treturn 0;\n }\n \n-#if defined(CONFIG_GUNZIP) || defined(CONFIG_ZSTD) || defined(CONFIG_XZ)\n+#if defined(CONFIG_GUNZIP) || defined(CONFIG_ZSTD) || defined(CONFIG_XZ) || defined(CONFIG_LZ4)\n typedef int (*DecompressStep)(void *state, void *buffer, size_t size);\n \n struct DecompressState {\n@@ -494,6 +497,70 @@ static int zstd_step(void* state, void* buffer, size_t size)\n \n #endif\n \n+#ifdef CONFIG_LZ4\n+\n+struct Lz4State {\n+\tLZ4F_decompressionContext_t dctx;\n+\tconst uint8_t *input_src;\n+\tsize_t input_size;\n+\tsize_t input_pos;\n+};\n+\n+static int lz4_step(void *state, void *buffer, size_t size)\n+{\n+\tstruct DecompressState *ds = (struct DecompressState *)state;\n+\tstruct Lz4State *s = (struct Lz4State *)ds->impl_state;\n+\tsize_t decompress_ret = 0;\n+\tsize_t produced = 0;\n+\tint ret;\n+\n+\tdo {\n+\t\tif (s->input_pos == s->input_size) {\n+\t\t\tret = ds->upstream_step(ds->upstream_state, ds->input, sizeof ds->input);\n+\t\t\tif (ret < 0) {\n+\t\t\t\treturn ret;\n+\t\t\t} else if (ret == 0) {\n+\t\t\t\tds->eof = true;\n+\t\t\t\tbreak;\n+\t\t\t}\n+\t\t\ts->input_src = ds->input;\n+\t\t\ts->input_size = ret;\n+\t\t\ts->input_pos = 0;\n+\t\t}\n+\n+\t\tsize_t out_len = size - produced;\n+\t\tsize_t in_len = s->input_size - s->input_pos;\n+\t\tsize_t old_produced = produced;\n+\t\tsize_t old_in_pos = s->input_pos;\n+\n+\t\tdecompress_ret = LZ4F_decompress(s->dctx,\n+\t\t\t\t\t\t (uint8_t *)buffer + produced, &out_len,\n+\t\t\t\t\t\t s->input_src + s->input_pos, &in_len,\n+\t\t\t\t\t\t NULL);\n+\t\tif (LZ4F_isError(decompress_ret)) {\n+\t\t\tERROR(\"LZ4F_decompress failed: %s\", LZ4F_getErrorName(decompress_ret));\n+\t\t\treturn -1;\n+\t\t}\n+\n+\t\tproduced += out_len;\n+\t\ts->input_pos += in_len;\n+\n+\t\tif (old_produced == produced && old_in_pos == s->input_pos) {\n+\t\t\tERROR(\"LZ4F_decompress made no progress\");\n+\t\t\treturn -1;\n+\t\t}\n+\n+\t\tif (decompress_ret == 0) {\n+\t\t\tds->eof = true;\n+\t\t\tbreak;\n+\t\t}\n+\t} while (produced == 0 && !ds->eof);\n+\n+\treturn produced;\n+}\n+\n+#endif\n+\n static int hash_compare(void *dgst, unsigned char *hash)\n {\n \t/*\n@@ -554,7 +621,7 @@ int copyfile(struct swupdate_copy *args)\n \t\t.outlen = 0, .eof = false\n \t};\n \n-#if defined(CONFIG_GUNZIP) || defined(CONFIG_ZSTD) || defined(CONFIG_XZ)\n+#if defined(CONFIG_GUNZIP) || defined(CONFIG_ZSTD) || defined(CONFIG_XZ) || defined(CONFIG_LZ4)\n \tstruct DecompressState decompress_state = {\n \t\t.upstream_step = NULL, .upstream_state = NULL,\n \t\t.impl_state = NULL\n@@ -583,6 +650,14 @@ int copyfile(struct swupdate_copy *args)\n \t\t.input_view = { NULL, 0, 0 },\n \t};\n #endif\n+#ifdef CONFIG_LZ4\n+\tstruct Lz4State lz4_state = {\n+\t\t.dctx = NULL,\n+\t\t.input_src = NULL,\n+\t\t.input_size = 0,\n+\t\t.input_pos = 0,\n+\t};\n+#endif\n #endif\n \n \t/*\n@@ -690,6 +765,21 @@ int copyfile(struct swupdate_copy *args)\n \t\t\tdecompress_step = &zstd_step;\n \t\t\tdecompress_state.impl_state = &zstd_state;\n \t\t} else\n+#endif\n+#ifdef CONFIG_LZ4\n+\t\tif (args->compressed == COMPRESSED_LZ4) {\n+\t\t\tsize_t create_ret;\n+\n+\t\t\tcreate_ret = LZ4F_createDecompressionContext(&lz4_state.dctx, LZ4F_VERSION);\n+\t\t\tif (LZ4F_isError(create_ret)) {\n+\t\t\t\tERROR(\"LZ4F_createDecompressionContext failed: %s\",\n+\t\t\t\t LZ4F_getErrorName(create_ret));\n+\t\t\t\tret = -EFAULT;\n+\t\t\t\tgoto copyfile_exit;\n+\t\t\t}\n+\t\t\tdecompress_step = &lz4_step;\n+\t\t\tdecompress_state.impl_state = &lz4_state;\n+\t\t} else\n #endif\n \t\t{\n \t\t\tTRACE(\"Requested decompression method (%d) is not configured!\", args->compressed);\n@@ -724,7 +814,7 @@ int copyfile(struct swupdate_copy *args)\n \t\tstate = &decrypt_state;\n \t}\n \n-#if defined(CONFIG_GUNZIP) || defined(CONFIG_ZSTD) || defined(CONFIG_XZ)\n+#if defined(CONFIG_GUNZIP) || defined(CONFIG_ZSTD) || defined(CONFIG_XZ) || defined(CONFIG_LZ4)\n \tif (args->compressed) {\n \t\tdecompress_state.upstream_step = step;\n \t\tdecompress_state.upstream_state = state;\n@@ -806,6 +896,11 @@ copyfile_exit:\n \t\tZSTD_freeDStream(zstd_state.dctx);\n \t}\n #endif\n+#ifdef CONFIG_LZ4\n+\tif (lz4_state.dctx != NULL) {\n+\t\tLZ4F_freeDecompressionContext(lz4_state.dctx);\n+\t}\n+#endif\n \n \treturn ret;\n }\ndiff --git a/core/util.c b/core/util.c\nindex 89046f3c..efc41f84 100644\n--- a/core/util.c\n+++ b/core/util.c\n@@ -83,6 +83,7 @@ static const struct {\n \t{ \"zlib\", COMPRESSED_ZLIB },\n \t{ \"xz\", COMPRESSED_XZ },\n \t{ \"zstd\", COMPRESSED_ZSTD },\n+\t{ \"lz4\", COMPRESSED_LZ4 },\n };\n \n int compressed_string_to_type(const char *s, int *out_type)\ndiff --git a/doc/source/sw-description.rst b/doc/source/sw-description.rst\nindex b09333fc..2c1e0017 100644\n--- a/doc/source/sw-description.rst\n+++ b/doc/source/sw-description.rst\n@@ -1491,7 +1491,7 @@ There are 4 main sections inside sw-description:\n | | | | before being installed. the value |\n | | | | denotes the compression type. |\n | | | | currently supported values are \"xz\", |\n- | | | | \"zlib\" and \"zstd\". |\n+ | | | | \"zlib\", \"zstd\" and \"lz4\". |\n +-------------+----------+------------+---------------------------------------+\n | compressed | bool (dep| images | Deprecated. Use the string form. true |\n | | recated) | files | is equal to 'compressed = \"zlib\"'. |\ndiff --git a/doc/source/swupdate.rst b/doc/source/swupdate.rst\nindex 84a8f21b..62681c2a 100644\n--- a/doc/source/swupdate.rst\n+++ b/doc/source/swupdate.rst\n@@ -57,7 +57,7 @@ General Overview\n SWUpdate can recreate UBI volumes, resizing them and\n copying the new software.\n \n-- support for compressed images, using the xz, zlib and zstd library.\n+- support for compressed images, using the xz, zlib, zstd and lz4 library.\n tarball (tgz file) are supported.\n \n - support for partitioned USB-pen or unpartitioned (mainly\ndiff --git a/handlers/swupdate.lua b/handlers/swupdate.lua\nindex aaba4774..e4bda3fa 100644\n--- a/handlers/swupdate.lua\n+++ b/handlers/swupdate.lua\n@@ -273,7 +273,7 @@ swupdate.register_handler = function(name, funcptr, mask) end\n --- @field size number Artifact size\n --- @field checksum number Computed checksum\n --- @field skip number `skip_t` enum number as in `include/swupdate.h`\n---- @field compressed string `zlib` or `zstd` (boolean value is deprecated)\n+--- @field compressed string `zlib`, `xz`, `zstd` or `lz4` (boolean value is deprecated)\n --- @field properties table Properties Table equivalent as specified in `sw-description`\n --- @field sha256 string sha256 hash of the image, file, or script\n local img_type = {\ndiff --git a/include/util.h b/include/util.h\nindex dcd0604c..5c7e1363 100644\n--- a/include/util.h\n+++ b/include/util.h\n@@ -64,6 +64,7 @@ enum compression_type {\n COMPRESSED_ZLIB,\n COMPRESSED_XZ,\n COMPRESSED_ZSTD,\n+ COMPRESSED_LZ4,\n };\n \n typedef int (*writeimage) (void *out, const void *buf, size_t len);\n","prefixes":["v1","4/4"]}