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