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| 1 #!/bin/bash | |
| 2 | |
| 3 # Copyright (c) 2009 The Chromium OS Authors. All rights reserved. | |
| 4 # Use of this source code is governed by a BSD-style license that can be | |
| 5 # found in the LICENSE file. | |
| 6 | |
| 7 # This script takes a path to a rootfs.ext2 which was generated by | |
| 8 # build_image.sh and generates an image that can be used for auto | |
| 9 # update. | |
| 10 | |
| 11 set -e | |
| 12 | |
| 13 if [ -z "$2" -o -z "$1" ]; then | |
| 14 echo "usage: $0 path/to/kernel_partition_img path/to/rootfs_partition_img" | |
| 15 exit 1 | |
| 16 fi | |
| 17 | |
| 18 if [ "$CROS_GENERATE_UPDATE_PAYLOAD_CALLED" != "1" ]; then | |
| 19 echo "WARNING:" | |
| 20 echo "This script should only be called from cros_generate_update_payload" | |
| 21 echo "Please run that script with --help to see how to use it." | |
| 22 fi | |
| 23 | |
| 24 if [ $(whoami) = "root" ]; then | |
| 25 echo "running $0 as root which is unneccessary" | |
| 26 fi | |
| 27 | |
| 28 KPART="$1" | |
| 29 ROOT_PART="$2" | |
| 30 | |
| 31 KPART_SIZE=$(stat -c%s "$KPART") | |
| 32 | |
| 33 # Sanity check size. | |
| 34 if [ "$KPART_SIZE" -gt $((16 * 1024 * 1024)) ]; then | |
| 35 echo "Kernel partition size ($KPART_SIZE bytes) greater than 16 MiB." | |
| 36 echo "That's too big." | |
| 37 exit 1 | |
| 38 fi | |
| 39 | |
| 40 FINAL_OUT_FILE=$(dirname "$1")/update.gz | |
| 41 UNCOMPRESSED_OUT_FILE="$FINAL_OUT_FILE.uncompressed" | |
| 42 | |
| 43 # First, write size of kernel partition in big endian as uint64 to out file | |
| 44 # printf converts it to a number like 00000000003d0900. sed converts it to: | |
| 45 # \\x00\\x00\\x00\\x00\\x00\\x3d\\x09\\x00, then xargs converts it to binary | |
| 46 # with echo. | |
| 47 printf %016x "$KPART_SIZE" | \ | |
| 48 sed 's/\([0-9a-f][0-9a-f]\)/\\\\x\1/g' | \ | |
| 49 xargs echo -ne > "$UNCOMPRESSED_OUT_FILE" | |
| 50 | |
| 51 # Next, write kernel partition to the out file | |
| 52 cat "$KPART" >> "$UNCOMPRESSED_OUT_FILE" | |
| 53 | |
| 54 # Sanity check size of output file now | |
| 55 if [ $(stat -c%s "$UNCOMPRESSED_OUT_FILE") -ne $((8 + $KPART_SIZE)) ]; then | |
| 56 echo "Kernel partition changed size during image generation. Aborting." | |
| 57 exit 1 | |
| 58 fi | |
| 59 | |
| 60 # Put rootfs into the out file | |
| 61 cat "$ROOT_PART" >> "$UNCOMPRESSED_OUT_FILE" | |
| 62 | |
| 63 # compress and hash | |
| 64 CS_AND_RET_CODES=$(gzip -c "$UNCOMPRESSED_OUT_FILE" | \ | |
| 65 tee "$FINAL_OUT_FILE" | openssl sha1 -binary | \ | |
| 66 openssl base64 | tr '\n' ' '; \ | |
| 67 echo ${PIPESTATUS[*]}) | |
| 68 EXPECTED_RET_CODES="0 0 0 0 0" | |
| 69 set -- $CS_AND_RET_CODES | |
| 70 CALC_CS="$1" | |
| 71 shift | |
| 72 RET_CODES="$@" | |
| 73 if [ "$RET_CODES" != "$EXPECTED_RET_CODES" ]; then | |
| 74 echo compression/hash failed. $RET_CODES | |
| 75 exit 1 | |
| 76 fi | |
| 77 | |
| 78 rm "$UNCOMPRESSED_OUT_FILE" | |
| 79 | |
| 80 echo Success. hash is "$CALC_CS" | |
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Chromium Code Reviews
Issue 6413012:
chromeos-installer: delete unused files (Closed)
Base URL: ssh://git@gitrw.chromium.org:9222/installer.git@master