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7f175a59e1
Currently, if set -e spots a nonzero exit we basically have
no real debug information- it just stops immediately without stating
where or why. This forces our scripts to be stupidly verbose so
we can track roughly where they were, thus when they fail we can
use that information to localize the rough exit point.
Instead we should be traping that set -e induced exit and
outputing necessary debug information to run it down. This includes
outputing the relevant stack trace, or at least what we can get of
it.
The 'die' function is now enhanced to automatically dump the trace
that lead to it. For most consumers this is desired- however for
commandline parsing induced dies ("--board is missing" for example),
the trace is noise. For those cases, a 'die_notrace' function was
added that retains the original non-backtrace behaviour.
Example output via instrumenting cros_generate_breakpad_symbols
w/ the failing command '/bin/false' (nonzero exit code).
Before:
./cros_generate_breakpad_symbols monkeys --board=x86-alex
<no output at all, just exit code 1>
With this CL:
./cros_generate_breakpad_symbols monkeys --board=x86-alex
ERROR : script called: ./cros_generate_breakpad_symbols 'monkeys' '--board=x86-alex'
ERROR : Backtrace: (most recent call is last)
ERROR : file cros_generate_breakpad_symbols, line 207, called: main 'monkeys' '--board=x86-alex'
ERROR : file cros_generate_breakpad_symbols, line 163, called: die_err_trap '/bin/false' '1'
ERROR :
ERROR : Command failed:
ERROR : Command '/bin/false' exited with nonzero code: 1
BUG=chromium-os:30598
TEST=inject a failing command into a script, verify the output.
TEST=inject a 'command not found', verify the output
TEST=cbuildbot x86-generic-full --remote
TEST=cbuildbot arm-tegra2-full --remote
TEST=cbuildbot chromiumos-sdk --remote
Change-Id: I517ffde4d1bb7e2310a74f5a6455b53ba2dea86c
Reviewed-on: https://gerrit.chromium.org/gerrit/17225
Reviewed-by: Brian Harring <ferringb@chromium.org>
Tested-by: Brian Harring <ferringb@chromium.org>
Commit-Ready: Brian Harring <ferringb@chromium.org>
98 lines
3.0 KiB
Bash
Executable File
98 lines
3.0 KiB
Bash
Executable File
#!/bin/bash
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# Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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# Downloads the latest buildbot image and prints the path to it.
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# This script only works if you have access to buildbot images.
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# --- BEGIN COMMON.SH BOILERPLATE ---
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# Load common CrOS utilities. Inside the chroot this file is installed in
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# /usr/lib/crosutils. Outside the chroot we find it relative to the script's
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# location.
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find_common_sh() {
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local common_paths=(/usr/lib/crosutils "$(dirname "$(readlink -f "$0")")/..")
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local path
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SCRIPT_ROOT=
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for path in "${common_paths[@]}"; do
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if [ -r "${path}/common.sh" ]; then
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SCRIPT_ROOT=${path}
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break
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fi
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done
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}
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find_common_sh
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. "${SCRIPT_ROOT}/common.sh" || { echo "Unable to load common.sh"; exit 1; }
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# --- END COMMON.SH BOILERPLATE ---
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get_default_board
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DEFINE_string board "$DEFAULT_BOARD" \
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"The name of the board to check for images."
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DEFINE_boolean incremental "$FLAGS_FALSE" "Download incremental build"
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DEFINE_boolean enable_rootfs_verification "${FLAGS_TRUE}" \
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"Enable rootfs verification for the downloaded image."
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# Parse command line flags.
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FLAGS "$@" || exit 1
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eval set -- "$FLAGS_ARGV"
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# Check on the board that they are trying to set up.
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if [ -z "$FLAGS_board" ] ; then
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die_notrace "Error: --board required."
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fi
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BUCKET="chromeos-image-archive"
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if [ $FLAGS_board = x86-generic ]; then
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if [ "$FLAGS_incremental" -eq "$FLAGS_TRUE" ]; then
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PATH_PREFIX="x86-generic-pre-flight-queue"
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else
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PATH_PREFIX="x86-generic-full"
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fi
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else
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PATH_PREFIX="${FLAGS_board}-release"
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fi
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URL_PREFIX="gs://$BUCKET/$PATH_PREFIX"
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LATEST_BUILD=$(gsutil cat $URL_PREFIX/LATEST)
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IMAGES_DIR="$DEFAULT_BUILD_ROOT/images/$FLAGS_board"
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LATEST_IMAGE_DIR="$IMAGES_DIR/$LATEST_BUILD"
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if [ ! -e $LATEST_IMAGE_DIR/chromiumos_base_image.bin ]; then
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mkdir -p $LATEST_IMAGE_DIR
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gsutil cp "$URL_PREFIX/$LATEST_BUILD/image.zip" \
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"$LATEST_IMAGE_DIR/image.zip" || die "Could not download image.zip"
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( cd $LATEST_IMAGE_DIR && unzip -qo image.zip ) \
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|| die "Could not unzip image.zip"
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fi
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IMAGE_NAME=chromiumos_qemu_image.bin
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IMAGE_FILE="${LATEST_IMAGE_DIR}"/"${IMAGE_NAME}"
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ESP_DIR="${LATEST_IMAGE_DIR}/esp"
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cleanup() {
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"$SCRIPTS_DIR/mount_gpt_image.sh" -u -e "${ESP_DIR}"
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}
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# This might seem a bit strange, but rootfs verification is already on with the
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# image, the only reason we've named this flag 'enable_rootfs_verfication'
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# versus 'disable_xyz' is to stay constant with the
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# 'noenable_rootfs_verification' flag used in build image to disable it.
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if [ "${FLAGS_enable_rootfs_verification}" -eq "${FLAGS_FALSE}" ] ; then
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trap cleanup INT TERM EXIT
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# We only need to touch the ESP part
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"$SCRIPTS_DIR/mount_gpt_image.sh" -i chromiumos_qemu_image.bin \
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-f "${LATEST_IMAGE_DIR}" -e "${ESP_DIR}"
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# Change the default to boot from the usb instead of vusb, usb is set
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# to boot from /dev/sda
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sudo sed -i -e 's/vusb/usb/g' "${ESP_DIR}/syslinux/default.cfg"
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sync; sync
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fi
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echo $LATEST_IMAGE_DIR
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exit 0
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