1 #!/bin/bash -u 2 # 3 # Copyright 2016 Google Inc. All Rights Reserved. 4 # 5 # This script is intended to be used by binary_search_state.py. It is to 6 # be used for testing/development of the binary search triage tool 7 # itself. It waits for the test setup script to build and install the 8 # image, then checks the hashes in the provided file. 9 # If the real hashes match the checksum hashes, then the image is 'good', 10 # otherwise it is 'bad'. This allows the rest of the bisecting tool 11 # to run without requiring help from the user (as it would if we were 12 # dealing with a real 'bad' image). 13 # 14 15 # 16 # Initialize the value below before using this script!!! 17 # 18 # Make an md5sum of all the files you want to check. For example if you want 19 # file1, file2, and file3 to be found as bad items: 20 # 21 # md5sum file1 file2 file3 > checksum.out 22 # 23 # (Make sure you are hashing the files from your good build and that the hashes 24 # from good to bad build differ) 25 # 26 # Then set HASHES_FILE to be the path to 'checksum.out' 27 # In this example, file1, file2, file3 will be found as the bad files 28 # because their hashes won't match when from the bad build tree. This is 29 # assuming that the hashes between good/bad builds change. It is suggested to 30 # build good and bad builds at different optimization levels to help ensure 31 # each item has a different hash. 32 # 33 # WARNING: 34 # Make sure paths to all files are absolute paths or relative to 35 # binary_search_state.py 36 # 37 # cros_pkg bisector example: 38 # 1. Build good packages with -O1, bad packages with -O2 39 # 2. cros_pkg/switch_to_good.sh pkg1 pkg2 pkg3 40 # 3. md5sum pkg1 pkg2 pkg3 > checksum.out.cros_pkg 41 # 4. Set HASHES_FILE to be checksum.out.cros_pkg 42 # 5. Run the bisector with this test script 43 # 44 # 45 HASHES_FILE= 46 47 if [[ -z "${HASHES_FILE}" || ! -f "${HASHES_FILE}" ]]; 48 then 49 echo "ERROR: HASHES_FILE must be intialized in common/hash_test.sh" 50 exit 3 51 fi 52 53 md5sum -c --status ${HASHES_FILE} 54 md5_result=$? 55 56 57 exit $md5_result 58
