diff --git a/build/cmake/lib/liberofs.cmake b/build/cmake/lib/liberofs.cmake
index 6119eb1f..cc8fd664 100644
--- a/build/cmake/lib/liberofs.cmake
+++ b/build/cmake/lib/liberofs.cmake
@@ -24,6 +24,7 @@ set(liberofs_function_list
 if (CMAKE_SYSTEM_NAME MATCHES "Linux|Android")
 	list(APPEND liberofs_include_list
 		"sys/random.h"
+		"sys/sendfile.h"
 	)
 	list(APPEND liberofs_function_list
 		"copy_file_range"
@@ -34,6 +35,7 @@ if (CMAKE_SYSTEM_NAME MATCHES "Linux|Android")
 		"pread64"
 		"pwrite64"
 		"posix_fadvise"
+		"sendfile"
 		"tmpfile64"
 	)
 	if (NOT RUN_ON_WSL)
diff --git a/build/cmake/lib/liberofs_config.h.in b/build/cmake/lib/liberofs_config.h.in
index db88ed9b..8df004d8 100644
--- a/build/cmake/lib/liberofs_config.h.in
+++ b/build/cmake/lib/liberofs_config.h.in
@@ -11,6 +11,7 @@
 #cmakedefine HAVE_SYS_IOCTL_H 1
 #cmakedefine HAVE_SYS_SYSMACROS_H 1
 #cmakedefine HAVE_SYS_RANDOM_H 1
+#cmakedefine HAVE_SYS_SENDFILE_H 1
 #cmakedefine HAVE_UNISTD_H 1
 
 // Functions
@@ -25,6 +26,7 @@
 #cmakedefine HAVE_PREAD64 1
 #cmakedefine HAVE_PWRITE64 1
 #cmakedefine HAVE_POSIX_FADVISE 1
+#cmakedefine HAVE_SENDFILE 1
 #cmakedefine HAVE_TMPFILE64 1
 #cmakedefine HAVE_SYSCONF 1
 #cmakedefine HAVE_UTIMENSAT 1
diff --git a/extract/ExtractHelper.cpp b/extract/ExtractHelper.cpp
index a73f965d..69e3fdbe 100644
--- a/extract/ExtractHelper.cpp
+++ b/extract/ExtractHelper.cpp
@@ -120,7 +120,7 @@ namespace skkk {
 		int ret;
 
 		struct erofs_inode inode = {
-				.sbi = &sbi,
+				.sbi = &g_sbi,
 				.nid = nid
 		};
 
@@ -155,8 +155,8 @@ namespace skkk {
 		bool ret = 0;
 		char pathnameBuf[PATH_MAX] = {0};
 		struct erofs_inode vi = {
-				.sbi = &sbi,
-				.nid = sbi.root_nid
+				.sbi = &g_sbi,
+				.nid = g_sbi.root_nid
 		};
 
 		ret = erofs_ilookup(path.c_str(), &vi);
@@ -165,7 +165,7 @@ namespace skkk {
 			goto out;
 		}
 
-		ret = erofs_get_pathname(&sbi, vi.nid, pathnameBuf, PATH_MAX);
+		ret = erofs_get_pathname(&g_sbi, vi.nid, pathnameBuf, PATH_MAX);
 		if (ret) {
 			goto out;
 		}
@@ -709,7 +709,7 @@ namespace skkk {
 		snprintf(eo->iter_path, PATH_MAX, "/");
 		eo->iter_pos = 0;
 
-		err = doInitNodeRecursive(sbi.root_nid);
+		err = doInitNodeRecursive(g_sbi.root_nid);
 		if (err) {
 			rc = RET_EXTRACT_INIT_NODE_FAIL;
 			LOGCE("failed to initialize ErofsNode!");
diff --git a/extract/ExtractOperation.cpp b/extract/ExtractOperation.cpp
index 2b636f5d..a2b0d488 100644
--- a/extract/ExtractOperation.cpp
+++ b/extract/ExtractOperation.cpp
@@ -213,8 +213,8 @@ namespace skkk {
 			if (!isExtractTargetConfig) {
 				fsOptionFile = fopen(fsOptionPath.c_str(), "wb");
 				if (fsOptionFile) {
-					auto time = (time_t) sbi.build_time;
-					erofs_uuid_unparse_lower(sbi.uuid, uuid);
+					auto time = (time_t) g_sbi.build_time;
+					erofs_uuid_unparse_lower(g_sbi.uuid, uuid);
 					fprintf(fsOptionFile, "Filesystem created:        %s", ctime(&time));
 					fprintf(fsOptionFile, "Filesystem UUID:           %s\n", uuid);
 					// The options are for reference only, please modify according to the actual situation.
@@ -226,7 +226,7 @@ namespace skkk {
 										  "--file-contexts=%s "
 										  "%s "                      //output image file
 										  "%s",                      //input dir
-							sbi.build_time, uuid,
+							g_sbi.build_time, uuid,
 							imgBaseName.c_str(),
 							fsConfigPath.c_str(), fsSelinuxLabelsPath.c_str(),
 							(imgBaseName + "_repack.img").c_str(),
diff --git a/extract/main.cpp b/extract/main.cpp
index b987a90c..3fa9d5be 100644
--- a/extract/main.cpp
+++ b/extract/main.cpp
@@ -163,8 +163,8 @@ static int parseAndCheckExtractCfg(int argc, char **argv) {
 					char *endPtr;
 					uint64_t n = strtoull(optarg, &endPtr, 0);
 					if (*endPtr == '\0') {
-						sbi.diskoffset = n;
-						LOGCD("offset=%lu", sbi.diskoffset);
+						g_sbi.bdev.offset = n;
+						LOGCD("offset=%lu", g_sbi.bdev.offset);
 					}
 				}
 				break;
@@ -233,14 +233,14 @@ int main(int argc, char **argv) {
 		goto exit;
 	}
 
-	err = dev_open_ro(&sbi, eo->getImgPath().c_str());
+	err = erofs_dev_open(&g_sbi, eo->getImgPath().c_str(), O_RDONLY);
 	if (err) {
 		ret = RET_EXTRACT_INIT_FAIL;
 		LOGCE("failed to open '%s'", eo->getImgPath().c_str());
 		goto exit;
 	}
 
-	err = erofs_read_superblock(&sbi);
+	err = erofs_read_superblock(&g_sbi);
 	if (err) {
 		ret = RET_EXTRACT_INIT_FAIL;
 		LOGCE("failed to read superblock");
@@ -297,12 +297,12 @@ int main(int argc, char **argv) {
 	printOperationTime(&start, &end);
 
 exit_dev_close:
-	dev_close(&sbi);
+	erofs_dev_close(&g_sbi);
 	LOGCD("ErofsNode size=%lu", eo->getErofsNodes().size());
 	LOGCD("main exit ret=%d", ret);
 
 exit:
-	blob_closeall(&sbi);
+	erofs_blob_closeall(&g_sbi);
 	erofs_exit_configure();
 	ExtractOperation::erofsOperationExit();
 	return ret;
diff --git a/fuse/main_win.c b/fuse/main_win.c
index 95397402..b45b189c 100644
--- a/fuse/main_win.c
+++ b/fuse/main_win.c
@@ -53,7 +53,7 @@ int erofsfuse_readdir(const char *path, void *buf, fuse_fill_dir_t filler,
 	};
 	erofs_dbg("readdir:%s offset=%llu", path, (long long)offset);
 
-	dir.sbi = &sbi;
+	dir.sbi = &g_sbi;
 	ret = erofs_ilookup(path, &dir);
 	if (ret)
 		return ret;
@@ -89,7 +89,7 @@ static int erofsfuse_open(const char *path, struct fuse_file_info *fi)
 
 static int erofsfuse_getattr(const char *path, struct stat *stbuf)
 {
-	struct erofs_inode vi = { .sbi = &sbi };
+	struct erofs_inode vi = { .sbi = &g_sbi };
 	int ret;
 
 	erofs_dbg("getattr(%s)", path);
@@ -120,7 +120,7 @@ static int erofsfuse_read(const char *path, char *buffer,
 
 	erofs_dbg("path:%s size=%zd offset=%llu", path, size, (long long)offset);
 
-	vi.sbi = &sbi;
+	vi.sbi = &g_sbi;
 	ret = erofs_ilookup(path, &vi);
 	if (ret)
 		return ret;
@@ -161,7 +161,7 @@ static int erofsfuse_getxattr(const char *path, const char *name, char *value,
 
 	erofs_dbg("getxattr(%s): name=%s size=%llu", path, name, size);
 
-	vi.sbi = &sbi;
+	vi.sbi = &g_sbi;
 	ret = erofs_ilookup(path, &vi);
 	if (ret)
 		return ret;
@@ -176,7 +176,7 @@ static int erofsfuse_listxattr(const char *path, char *list, size_t size)
 
 	erofs_dbg("listxattr(%s): size=%llu", path, size);
 
-	vi.sbi = &sbi;
+	vi.sbi = &g_sbi;
 	ret = erofs_ilookup(path, &vi);
 	if (ret)
 		return ret;
@@ -256,10 +256,10 @@ static int optional_opt_func(void *data, const char *arg, int key,
 
 	switch (key) {
 		case 1:
-			ret = blob_open_ro(&sbi, arg + sizeof("--device=") - 1);
+			ret = erofs_blob_open_ro(&g_sbi, arg + sizeof("--device=") - 1);
 			if (ret)
 				return -1;
-			++sbi.extra_devices;
+			++g_sbi.extra_devices;
 			return 0;
 		case FUSE_OPT_KEY_NONOPT:
 			if (fusecfg.mountpoint)
@@ -334,16 +334,16 @@ int main(int argc, char *argv[])
 	if (fusecfg.odebug && cfg.c_dbg_lvl < EROFS_DBG)
 		cfg.c_dbg_lvl = EROFS_DBG;
 
-	sbi.diskoffset = fusecfg.offset;
+	g_sbi.bdev.offset = fusecfg.offset;
 
 	erofsfuse_dumpcfg();
-	ret = dev_open_ro(&sbi, fusecfg.disk);
+	ret = erofs_dev_open(&g_sbi, fusecfg.disk, O_RDONLY);
 	if (ret) {
 		fprintf(stderr, "failed to open: %s\n", fusecfg.disk);
 		goto err_fuse_free_args;
 	}
 
-	ret = erofs_read_superblock(&sbi);
+	ret = erofs_read_superblock(&g_sbi);
 	if (ret) {
 		fprintf(stderr, "failed to read erofs super block\n");
 		goto err_dev_close;
@@ -351,10 +351,10 @@ int main(int argc, char *argv[])
 
 	ret = fuse_main(args.argc, args.argv, &erofs_ops, NULL);
 
-	erofs_put_super(&sbi);
+	erofs_put_super(&g_sbi);
 err_dev_close:
-	blob_closeall(&sbi);
-	dev_close(&sbi);
+	erofs_blob_closeall(&g_sbi);
+	erofs_dev_close(&g_sbi);
 err_fuse_free_args:
 	fuse_opt_free_args(&args);
 err: