Project import
diff --git a/squashfs_utils/Android.mk b/squashfs_utils/Android.mk
new file mode 100644
index 0000000..d6f8edd
--- /dev/null
+++ b/squashfs_utils/Android.mk
@@ -0,0 +1,29 @@
+# Copyright 2015 The Android Open Source Project
+
+LOCAL_PATH:= $(call my-dir)
+
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES := squashfs_utils.c
+LOCAL_STATIC_LIBRARIES := libcutils
+LOCAL_C_INCLUDES := external/squashfs-tools/squashfs-tools
+LOCAL_MODULE := libsquashfs_utils
+include $(BUILD_STATIC_LIBRARY)
+
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES := squashfs_utils.c
+LOCAL_STATIC_LIBRARIES := libcutils
+LOCAL_C_INCLUDES := external/squashfs-tools/squashfs-tools
+LOCAL_CFLAGS := -Wall -Werror -D_GNU_SOURCE -DSQUASHFS_NO_KLOG
+LOCAL_MODULE := libsquashfs_utils_host
+include $(BUILD_HOST_STATIC_LIBRARY)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := mksquashfsimage.sh
+LOCAL_SRC_FILES := mksquashfsimage.sh
+LOCAL_MODULE_CLASS := EXECUTABLES
+# We don't need any additional suffix.
+LOCAL_MODULE_SUFFIX :=
+LOCAL_BUILT_MODULE_STEM := $(notdir $(LOCAL_SRC_FILES))
+LOCAL_IS_HOST_MODULE := true
+LOCAL_MODULE_HOST_OS := linux darwin
+include $(BUILD_PREBUILT)
diff --git a/squashfs_utils/NOTICE b/squashfs_utils/NOTICE
new file mode 100644
index 0000000..8530865
--- /dev/null
+++ b/squashfs_utils/NOTICE
@@ -0,0 +1,190 @@
+
+ Copyright (c) 2015, 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.
+
+ "Legal Entity" shall mean the union of the acting entity and all
+ other entities that control, are controlled by, or are under common
+ control with that entity. For the purposes of this definition,
+ "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.
+
+ "Object" form shall mean any form resulting from mechanical
+ transformation or translation of a Source form, including but
+ not limited to compiled object code, generated documentation,
+ and conversions to other media types.
+
+ "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."
+
+ "Contributor" shall mean Licensor and any individual or Legal Entity
+ on behalf of whom a Contribution has been received by Licensor and
+ subsequently incorporated within the Work.
+
+ 2. Grant of Copyright 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
+ copyright license to reproduce, prepare Derivative Works of,
+ publicly display, publicly perform, sublicense, and distribute the
+ 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,
+ excluding those notices that do not pertain to any part of
+ the Derivative Works; and
+
+ (d) If the Work includes a "NOTICE" text file as part of its
+ distribution, then any Derivative Works that You distribute must
+ include a readable copy of the attribution notices contained
+ within such NOTICE file, excluding those notices that do not
+ pertain to any part of the Derivative Works, in at least one
+ of the following places: within a NOTICE text file distributed
+ as part of the Derivative Works; within the Source form or
+ documentation, if provided along with the Derivative Works; or,
+ within a display generated by the Derivative Works, if and
+ wherever such third-party notices normally appear. The contents
+ 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
+ implied, including, without limitation, any warranties or conditions
+ 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
+ result of this License or out of the use or inability to use the
+ Work (including but not limited to damages for loss of goodwill,
+ work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses), even if such Contributor
+ has been advised of the possibility of such damages.
+
+ 9. Accepting Warranty or Additional Liability. While redistributing
+ the Work or Derivative Works thereof, You may choose to offer,
+ and charge a fee for, acceptance of support, warranty, indemnity,
+ or other liability obligations and/or rights consistent with this
+ License. However, in accepting such obligations, You may act only
+ on Your own behalf and on Your sole responsibility, not on behalf
+ of any other Contributor, and only if You agree to indemnify,
+ defend, and hold each Contributor harmless for any liability
+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
+
+ END OF TERMS AND CONDITIONS
+
diff --git a/squashfs_utils/mksquashfsimage.sh b/squashfs_utils/mksquashfsimage.sh
new file mode 100755
index 0000000..5f8cfea
--- /dev/null
+++ b/squashfs_utils/mksquashfsimage.sh
@@ -0,0 +1,109 @@
+#!/bin/bash
+#
+# To call this script, make sure mksquashfs is somewhere in PATH
+
+function usage() {
+cat<<EOT
+Usage:
+${0##*/} SRC_DIR OUTPUT_FILE [-s] [-m MOUNT_POINT] [-d PRODUCT_OUT] [-C FS_CONFIG ] [-c FILE_CONTEXTS] [-b BLOCK_SIZE] [-z COMPRESSOR] [-zo COMPRESSOR_OPT]
+EOT
+}
+
+echo "in mksquashfsimage.sh PATH=$PATH"
+
+if [ $# -lt 2 ]; then
+ usage
+ exit 1
+fi
+
+SRC_DIR=$1
+if [ ! -d $SRC_DIR ]; then
+ echo "Can not find directory $SRC_DIR!"
+ exit 2
+fi
+OUTPUT_FILE=$2
+shift; shift
+
+SPARSE=false
+if [[ "$1" == "-s" ]]; then
+ SPARSE=true
+ shift;
+fi
+
+MOUNT_POINT=
+if [[ "$1" == "-m" ]]; then
+ MOUNT_POINT=$2
+ shift; shift
+fi
+
+PRODUCT_OUT=
+if [[ "$1" == "-d" ]]; then
+ PRODUCT_OUT=$2
+ shift; shift
+fi
+
+FS_CONFIG=
+if [[ "$1" == "-C" ]]; then
+ FS_CONFIG=$2
+ shift; shift
+fi
+
+FILE_CONTEXTS=
+if [[ "$1" == "-c" ]]; then
+ FILE_CONTEXTS=$2
+ shift; shift
+fi
+
+BLOCK_SIZE=131072
+if [[ "$1" == "-b" ]]; then
+ BLOCK_SIZE=$2
+ shift; shift
+fi
+
+COMPRESSOR="lz4"
+COMPRESSOR_OPT="-Xhc"
+if [[ "$1" == "-z" ]]; then
+ COMPRESSOR=$2
+ COMPRESSOR_OPT=
+ shift; shift
+fi
+
+if [[ "$1" == "-zo" ]]; then
+ COMPRESSOR_OPT=$2
+ shift; shift
+fi
+
+OPT=""
+if [ -n "$MOUNT_POINT" ]; then
+ OPT="$OPT -mount-point $MOUNT_POINT"
+fi
+if [ -n "$PRODUCT_OUT" ]; then
+ OPT="$OPT -product-out $PRODUCT_OUT"
+fi
+if [ -n "$FS_CONFIG" ]; then
+ OPT="$OPT -fs-config-file $FS_CONFIG"
+fi
+if [ -n "$FILE_CONTEXTS" ]; then
+ OPT="$OPT -context-file $FILE_CONTEXTS"
+fi
+if [ -n "$BLOCK_SIZE" ]; then
+ OPT="$OPT -b $BLOCK_SIZE"
+fi
+
+MAKE_SQUASHFS_CMD="mksquashfs $SRC_DIR/ $OUTPUT_FILE -no-progress -comp $COMPRESSOR $COMPRESSOR_OPT -no-exports -noappend -no-recovery -android-fs-config $OPT"
+echo $MAKE_SQUASHFS_CMD
+$MAKE_SQUASHFS_CMD
+
+if [ $? -ne 0 ]; then
+ exit 4
+fi
+
+SPARSE_SUFFIX=".sparse"
+if [ "$SPARSE" = true ]; then
+ img2simg $OUTPUT_FILE $OUTPUT_FILE$SPARSE_SUFFIX
+ if [ $? -ne 0 ]; then
+ exit 4
+ fi
+ mv $OUTPUT_FILE$SPARSE_SUFFIX $OUTPUT_FILE
+fi
+
diff --git a/squashfs_utils/squashfs_utils.c b/squashfs_utils/squashfs_utils.c
new file mode 100644
index 0000000..1db424b
--- /dev/null
+++ b/squashfs_utils/squashfs_utils.c
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+#include "squashfs_utils.h"
+
+#include <cutils/fs.h>
+#include <cutils/klog.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "squashfs_fs.h"
+
+#ifdef SQUASHFS_NO_KLOG
+#include <stdio.h>
+#define ERROR(x...) fprintf(stderr, x)
+#else
+#define ERROR(x...) KLOG_ERROR("squashfs_utils", x)
+#endif
+
+size_t squashfs_get_sb_size()
+{
+ return sizeof(struct squashfs_super_block);
+}
+
+int squashfs_parse_sb_buffer(const void *buf, struct squashfs_info *info)
+{
+ const struct squashfs_super_block *sb =
+ (const struct squashfs_super_block *)buf;
+
+ if (sb->s_magic != SQUASHFS_MAGIC) {
+ return -1;
+ }
+
+ info->block_size = sb->block_size;
+ info->inodes = sb->inodes;
+ info->bytes_used = sb->bytes_used;
+ // by default mksquashfs pads the filesystem to 4K blocks
+ info->bytes_used_4K_padded =
+ sb->bytes_used + (4096 - (sb->bytes_used & (4096 - 1)));
+
+ return 0;
+}
+
+int squashfs_parse_sb(const char *blk_device, struct squashfs_info *info)
+{
+ int ret = 0;
+ struct squashfs_super_block sb;
+ int data_device;
+
+ data_device = TEMP_FAILURE_RETRY(open(blk_device, O_RDONLY | O_CLOEXEC));
+ if (data_device == -1) {
+ ERROR("Error opening block device (%s)\n", strerror(errno));
+ return -1;
+ }
+
+ if (TEMP_FAILURE_RETRY(read(data_device, &sb, sizeof(sb)))
+ != sizeof(sb)) {
+ ERROR("Error reading superblock\n");
+ ret = -1;
+ goto cleanup;
+ }
+
+ if (squashfs_parse_sb_buffer(&sb, info) == -1) {
+ ERROR("Not a valid squashfs filesystem\n");
+ ret = -1;
+ goto cleanup;
+ }
+
+cleanup:
+ close(data_device);
+ return ret;
+}
diff --git a/squashfs_utils/squashfs_utils.h b/squashfs_utils/squashfs_utils.h
new file mode 100644
index 0000000..465429f
--- /dev/null
+++ b/squashfs_utils/squashfs_utils.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2015 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 _SQUASHFS_UTILS_H_
+#define _SQUASHFS_UTILS_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct squashfs_info {
+ uint32_t block_size;
+ uint32_t inodes;
+ uint64_t bytes_used;
+ uint64_t bytes_used_4K_padded;
+};
+
+size_t squashfs_get_sb_size();
+int squashfs_parse_sb_buffer(const void *data, struct squashfs_info *info);
+int squashfs_parse_sb(const char *blk_device, struct squashfs_info *info);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
