f2fs_utils: provide sparse io and dynamic load.
This uses
external/f2fs-tools LGPL v2.1
It provides low-level IO functions that f2fs-tools/mkfs expects
for writing to the media. In this case we use the sparse lib.
Change-Id: I8d141a0d4d14df9fe84d3b131484e9696fcd8870
Signed-off-by: JP Abgrall <jpa@google.com>
diff --git a/f2fs_utils/Android.mk b/f2fs_utils/Android.mk
new file mode 100644
index 0000000..f3a186c
--- /dev/null
+++ b/f2fs_utils/Android.mk
@@ -0,0 +1,67 @@
+# Copyright 2014 The Android Open Source Project
+
+LOCAL_PATH:= $(call my-dir)
+
+libf2fs_ioutils_src_files := \
+ f2fs_ioutils.c
+
+# ---------------------------------------
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES := $(libf2fs_ioutils_src_files)
+LOCAL_C_INCLUDES := external/f2fs-tools/include external/f2fs-tools/mkfs
+LOCAL_STATIC_LIBRARIES := \
+ libsparse_host \
+ libext2_uuid_host \
+ libz
+LOCAL_MODULE := libf2fs_ioutils_host
+include $(BUILD_HOST_STATIC_LIBRARY)
+
+# ---------------------------------------
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES := f2fs_dlutils.c
+LOCAL_C_INCLUDES := external/f2fs-tools/include external/f2fs-tools/mkfs
+# Will attempt to dlopen("libf2fs_fmt_host_dyn")
+LOCAL_LDLIBS := -ldl
+LOCAL_MODULE := libf2fs_dlutils_host
+include $(BUILD_HOST_STATIC_LIBRARY)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := libf2fs_utils_host
+LOCAL_SRC_FILES := f2fs_utils.c
+LOCAL_STATIC_LIBRARIES := \
+ libsparse_host \
+ libz
+LOCAL_C_INCLUDES := external/f2fs-tools/include external/f2fs-tools/mkfs
+include $(BUILD_HOST_STATIC_LIBRARY)
+
+
+#
+# -- All host/targets excluding windows
+#
+
+ifneq ($(HOST_OS),windows)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := libf2fs_dlutils
+LOCAL_SRC_FILES := f2fs_dlutils.c
+LOCAL_C_INCLUDES := external/f2fs-tools/include external/f2fs-tools/mkfs
+LOCAL_SHARED_LIBRARIES := libdl
+include $(BUILD_SHARED_LIBRARY)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := libf2fs_dlutils_static
+LOCAL_SRC_FILES := f2fs_dlutils.c
+LOCAL_C_INCLUDES := external/f2fs-tools/include external/f2fs-tools/mkfs
+LOCAL_SHARED_LIBRARIES := libdl
+include $(BUILD_STATIC_LIBRARY)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := libf2fs_utils_static
+LOCAL_SRC_FILES := f2fs_utils.c
+LOCAL_C_INCLUDES := external/f2fs-tools/include external/f2fs-tools/mkfs
+LOCAL_STATIC_LIBRARIES := \
+ libsparse_static
+include $(BUILD_STATIC_LIBRARY)
+
+endif
+
diff --git a/f2fs_utils/MODULE_LICENSE_APACHE2 b/f2fs_utils/MODULE_LICENSE_APACHE2
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/f2fs_utils/MODULE_LICENSE_APACHE2
diff --git a/f2fs_utils/NOTICE b/f2fs_utils/NOTICE
new file mode 100644
index 0000000..5d14293
--- /dev/null
+++ b/f2fs_utils/NOTICE
@@ -0,0 +1,190 @@
+
+ Copyright (c) 2010, The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
+ and distribution as defined by Sections 1 through 9 of this document.
+
+ "Licensor" shall mean the copyright owner or entity authorized by
+ the copyright owner that is granting the License.
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+ "Legal Entity" shall mean the union of the acting entity and all
+ other entities that control, are controlled by, or are under common
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+ "control" means (i) the power, direct or indirect, to cause the
+ direction or management of such entity, whether by contract or
+ otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ outstanding shares, or (iii) beneficial ownership of such entity.
+
+ "You" (or "Your") shall mean an individual or Legal Entity
+ exercising permissions granted by this License.
+
+ "Source" form shall mean the preferred form for making modifications,
+ including but not limited to software source code, documentation
+ source, and configuration files.
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+ "Object" form shall mean any form resulting from mechanical
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+ not limited to compiled object code, generated documentation,
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+ "Work" shall mean the work of authorship, whether in Source or
+ Object form, made available under the License, as indicated by a
+ copyright notice that is included in or attached to the work
+ (an example is provided in the Appendix below).
+
+ "Derivative Works" shall mean any work, whether in Source or Object
+ form, that is based on (or derived from) the Work and for which the
+ editorial revisions, annotations, elaborations, or other modifications
+ represent, as a whole, an original work of authorship. For the purposes
+ of this License, Derivative Works shall not include works that remain
+ separable from, or merely link (or bind by name) to the interfaces of,
+ the Work and Derivative Works thereof.
+
+ "Contribution" shall mean any work of authorship, including
+ the original version of the Work and any modifications or additions
+ to that Work or Derivative Works thereof, that is intentionally
+ submitted to Licensor for inclusion in the Work by the copyright owner
+ or by an individual or Legal Entity authorized to submit on behalf of
+ the copyright owner. For the purposes of this definition, "submitted"
+ means any form of electronic, verbal, or written communication sent
+ to the Licensor or its representatives, including but not limited to
+ communication on electronic mailing lists, source code control systems,
+ and issue tracking systems that are managed by, or on behalf of, the
+ Licensor for the purpose of discussing and improving the Work, but
+ excluding communication that is conspicuously marked or otherwise
+ designated in writing by the copyright owner as "Not a Contribution."
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+ "Contributor" shall mean Licensor and any individual or Legal Entity
+ on behalf of whom a Contribution has been received by Licensor and
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+ 2. Grant of Copyright License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
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+ copyright license to reproduce, prepare Derivative Works of,
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+ Work and such Derivative Works in Source or Object form.
+
+ 3. Grant of Patent License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ (except as stated in this section) patent license to make, have made,
+ use, offer to sell, sell, import, and otherwise transfer the Work,
+ where such license applies only to those patent claims licensable
+ by such Contributor that are necessarily infringed by their
+ Contribution(s) alone or by combination of their Contribution(s)
+ with the Work to which such Contribution(s) was submitted. If You
+ institute patent litigation against any entity (including a
+ cross-claim or counterclaim in a lawsuit) alleging that the Work
+ or a Contribution incorporated within the Work constitutes direct
+ or contributory patent infringement, then any patent licenses
+ granted to You under this License for that Work shall terminate
+ as of the date such litigation is filed.
+
+ 4. Redistribution. You may reproduce and distribute copies of the
+ Work or Derivative Works thereof in any medium, with or without
+ modifications, and in Source or Object form, provided that You
+ meet the following conditions:
+
+ (a) You must give any other recipients of the Work or
+ Derivative Works a copy of this License; and
+
+ (b) You must cause any modified files to carry prominent notices
+ stating that You changed the files; and
+
+ (c) You must retain, in the Source form of any Derivative Works
+ that You distribute, all copyright, patent, trademark, and
+ attribution notices from the Source form of the Work,
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+ (d) If the Work includes a "NOTICE" text file as part of its
+ distribution, then any Derivative Works that You distribute must
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+ of the following places: within a NOTICE text file distributed
+ as part of the Derivative Works; within the Source form or
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+ within a display generated by the Derivative Works, if and
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+ of the NOTICE file are for informational purposes only and
+ do not modify the License. You may add Your own attribution
+ notices within Derivative Works that You distribute, alongside
+ or as an addendum to the NOTICE text from the Work, provided
+ that such additional attribution notices cannot be construed
+ as modifying the License.
+
+ You may add Your own copyright statement to Your modifications and
+ may provide additional or different license terms and conditions
+ for use, reproduction, or distribution of Your modifications, or
+ for any such Derivative Works as a whole, provided Your use,
+ reproduction, and distribution of the Work otherwise complies with
+ the conditions stated in this License.
+
+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
+ except as required for reasonable and customary use in describing the
+ origin of the Work and reproducing the content of the NOTICE file.
+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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+ of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ PARTICULAR PURPOSE. You are solely responsible for determining the
+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
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+ 9. Accepting Warranty or Additional Liability. While redistributing
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+ defend, and hold each Contributor harmless for any liability
+ incurred by, or claims asserted against, such Contributor by reason
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+ END OF TERMS AND CONDITIONS
+
diff --git a/f2fs_utils/f2fs_dlutils.c b/f2fs_utils/f2fs_dlutils.c
new file mode 100644
index 0000000..6fddc6e
--- /dev/null
+++ b/f2fs_utils/f2fs_dlutils.c
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#define _LARGEFILE64_SOURCE
+
+#include <stdio.h>
+
+#include <dlfcn.h>
+#include <assert.h>
+
+#include <f2fs_fs.h>
+#include <f2fs_format_utils.h>
+#define F2FS_DYN_LIB "libf2fs_fmt_host_dyn.so"
+
+int (*f2fs_format_device_dl)(void);
+void (*f2fs_init_configuration_dl)(struct f2fs_configuration *);
+
+int f2fs_format_device(void) {
+ assert(f2fs_format_device_dl);
+ return f2fs_format_device_dl();
+}
+void f2fs_init_configuration(struct f2fs_configuration *config) {
+ assert(f2fs_init_configuration_dl);
+ f2fs_init_configuration_dl(config);
+}
+
+int dlopenf2fs() {
+ void* f2fs_lib;
+
+ f2fs_lib = dlopen(F2FS_DYN_LIB, RTLD_LAZY);
+ if (!f2fs_lib) {
+ return -1;
+ }
+ f2fs_format_device_dl = dlsym(f2fs_lib, "f2fs_format_device");
+ f2fs_init_configuration_dl = dlsym(f2fs_lib, "f2fs_init_configuration");
+ if (!f2fs_format_device_dl || !f2fs_init_configuration_dl) {
+ return -1;
+ }
+ return 0;
+}
diff --git a/f2fs_utils/f2fs_ioutils.c b/f2fs_utils/f2fs_ioutils.c
new file mode 100644
index 0000000..a211b05
--- /dev/null
+++ b/f2fs_utils/f2fs_ioutils.c
@@ -0,0 +1,188 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#define _LARGEFILE64_SOURCE
+
+#include <asm/types.h>
+#include <errno.h>
+#include <linux/fs.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h> /* memset() */
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <dlfcn.h>
+
+#include <assert.h>
+
+#include <f2fs_fs.h>
+#include <f2fs_format_utils.h>
+
+#include <sparse/sparse.h>
+
+struct selabel_handle;
+
+#include "make_f2fs.h"
+
+#ifdef USE_MINGW
+
+#include <winsock2.h>
+
+/* These match the Linux definitions of these flags.
+ L_xx is defined to avoid conflicting with the win32 versions.
+*/
+#define L_S_IRUSR 00400
+#define L_S_IWUSR 00200
+#define L_S_IXUSR 00100
+#define S_IRWXU (L_S_IRUSR | L_S_IWUSR | L_S_IXUSR)
+#define S_IRGRP 00040
+#define S_IWGRP 00020
+#define S_IXGRP 00010
+#define S_IRWXG (S_IRGRP | S_IWGRP | S_IXGRP)
+#define S_IROTH 00004
+#define S_IWOTH 00002
+#define S_IXOTH 00001
+#define S_IRWXO (S_IROTH | S_IWOTH | S_IXOTH)
+#define S_ISUID 0004000
+#define S_ISGID 0002000
+#define S_ISVTX 0001000
+
+#else
+
+#include <selinux/selinux.h>
+#include <selinux/label.h>
+#include <selinux/android.h>
+
+#define O_BINARY 0
+
+#endif
+
+struct f2fs_configuration config;
+struct sparse_file *f2fs_sparse_file;
+
+struct buf_item {
+ void *buf;
+ size_t len;
+ struct buf_item *next;
+};
+
+struct buf_item *buf_list;
+
+static int dev_write_fd(void *buf, __u64 offset, size_t len)
+{
+ if (lseek64(config.fd, (off64_t)offset, SEEK_SET) < 0)
+ return -1;
+ if (write(config.fd, buf, len) != len)
+ return -1;
+ return 0;
+}
+
+void flush_sparse_buffs()
+{
+ while (buf_list) {
+ struct buf_item *bi = buf_list;
+ buf_list = buf_list->next;
+ free(bi->buf);
+ free(bi);
+ }
+}
+
+static int dev_write_sparse(void *buf, __u64 byte_offset, size_t byte_len)
+{
+ struct buf_item *bi = calloc(1, sizeof(struct buf_item));
+
+ if (bi == NULL) {
+ return -ENOMEM;
+ }
+ bi->buf = malloc(byte_len);
+ if (bi->buf == NULL) {
+ free(bi);
+ return -ENOMEM;
+ }
+
+ bi->len = byte_len;
+ memcpy(bi->buf, buf, byte_len);
+ bi->next = buf_list;
+ buf_list = bi;
+
+ sparse_file_add_data(f2fs_sparse_file, bi->buf, byte_len, byte_offset/F2FS_BLKSIZE);
+ return 0;
+}
+
+void f2fs_finalize_device()
+{
+}
+
+int f2fs_trim_device()
+{
+ return 0;
+}
+
+/*
+ * IO interfaces
+ */
+int dev_read(void *buf, __u64 offset, size_t len)
+{
+ return 0;
+}
+
+int dev_write(void *buf, __u64 offset, size_t len)
+{
+ if (config.fd >= 0) {
+ return dev_write_fd(buf, offset, len);
+ } else {
+ return dev_write_sparse(buf, offset, len);
+ }
+}
+
+
+int dev_fill(void *buf, __u64 offset, size_t len)
+{
+ int ret;
+ if (config.fd >= 0) {
+ return dev_write_fd(buf, offset, len);
+ }
+ // sparse file fills with zero by default.
+ // return sparse_file_add_fill(f2fs_sparse_file, ((__u8*)(bi->buf))[0], byte_len, byte_offset/F2FS_BLKSIZE);
+ return 0;
+}
+
+int dev_read_block(void *buf, __u64 blk_addr)
+{
+ assert(false); // Must not be invoked.
+ return 0;
+}
+
+int dev_read_blocks(void *buf, __u64 addr, __u32 nr_blks)
+{
+ assert(false); // Must not be invoked.
+ return 0;
+}
+
diff --git a/f2fs_utils/f2fs_utils.c b/f2fs_utils/f2fs_utils.c
new file mode 100644
index 0000000..d42ccc1
--- /dev/null
+++ b/f2fs_utils/f2fs_utils.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#define _LARGEFILE64_SOURCE
+
+#include <fcntl.h>
+#include <dlfcn.h>
+
+#include <f2fs_fs.h>
+#include <f2fs_format_utils.h>
+
+#include <sparse/sparse.h>
+
+struct selabel_handle;
+
+#include "make_f2fs.h"
+
+extern void flush_sparse_buffs();
+
+struct f2fs_configuration config;
+struct sparse_file *f2fs_sparse_file;
+extern int dlopenf2fs();
+
+static void reset_f2fs_info() {
+ // Reset all the global data structures used by make_f2fs so it
+ // can be called again.
+ memset(&config, 0, sizeof(config));
+ config.fd = -1;
+ if (f2fs_sparse_file) {
+ sparse_file_destroy(f2fs_sparse_file);
+ f2fs_sparse_file = NULL;
+ }
+}
+
+int make_f2fs_sparse_fd(int fd, long long len,
+ const char *mountpoint, struct selabel_handle *sehnd)
+{
+ if (dlopenf2fs() < 0) {
+ return -1;
+ }
+ reset_f2fs_info();
+ f2fs_init_configuration(&config);
+ len &= ~((__u64)F2FS_BLKSIZE);
+ config.total_sectors = len / config.sector_size;
+ config.start_sector = 0;
+ f2fs_sparse_file = sparse_file_new(F2FS_BLKSIZE, len);
+ f2fs_format_device();
+ sparse_file_write(f2fs_sparse_file, fd, /*gzip*/0, /*sparse*/1, /*crc*/0);
+ sparse_file_destroy(f2fs_sparse_file);
+ flush_sparse_buffs();
+ f2fs_sparse_file = NULL;
+ return 0;
+}
diff --git a/f2fs_utils/make_f2fs.h b/f2fs_utils/make_f2fs.h
new file mode 100644
index 0000000..f02694a
--- /dev/null
+++ b/f2fs_utils/make_f2fs.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _MAKE_F2FS_H_
+#define _MAKE_F2FS_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct selabel_handle;
+
+int make_f2fs_sparse_fd(int fd, long long len,
+ const char *mountpoint, struct selabel_handle *sehnd);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif