jcs.org
qemu with hax to log dma reads & writes
jcs.org/2018/11/12/vfio
1#!/bin/bash
2#
3# Author: Fam Zheng <famz@redhat.com>
4#
5# Archive source tree, including submodules. This is created for test code to
6# export the source files, in order to be built in a different environment,
7# such as in a docker instance or VM.
8#
9# This code is licensed under the GPL version 2 or later. See
10# the COPYING file in the top-level directory.
11
12error() {
13 printf %s\\n "$*" >&2
14 exit 1
15}
16
17if test $# -lt 1; then
18 error "Usage: $0 <output tarball>"
19fi
20
21tar_file=$(realpath "$1")
22sub_tdir=$(mktemp -d "${tar_file%.tar}.sub.XXXXXXXX")
23sub_file="${sub_tdir}/submodule.tar"
24
25# We want a predictable list of submodules for builds, that is
26# independent of what the developer currently has initialized
27# in their checkout, because the build environment is completely
28# different to the host OS.
29submodules="dtc slirp ui/keycodemapdb tests/fp/berkeley-softfloat-3 tests/fp/berkeley-testfloat-3"
30sub_deinit=""
31
32function cleanup() {
33 local status=$?
34 rm -rf "$sub_tdir"
35 if test "$sub_deinit" != ""; then
36 git submodule deinit $sub_deinit
37 fi
38 exit $status
39}
40trap "cleanup" 0 1 2 3 15
41
42function tree_ish() {
43 local retval='HEAD'
44 if ! git diff-index --quiet --ignore-submodules=all HEAD -- &>/dev/null
45 then
46 retval=$(git stash create)
47 fi
48 echo "$retval"
49}
50
51git archive --format tar "$(tree_ish)" > "$tar_file"
52test $? -ne 0 && error "failed to archive qemu"
53for sm in $submodules; do
54 status="$(git submodule status "$sm")"
55 smhash="${status#[ +-]}"
56 smhash="${smhash%% *}"
57 case "$status" in
58 -*)
59 sub_deinit="$sub_deinit $sm"
60 git submodule update --init "$sm"
61 test $? -ne 0 && error "failed to update submodule $sm"
62 ;;
63 +*)
64 echo "WARNING: submodule $sm is out of sync"
65 ;;
66 esac
67 (cd $sm; git archive --format tar --prefix "$sm/" $(tree_ish)) > "$sub_file"
68 test $? -ne 0 && error "failed to archive submodule $sm ($smhash)"
69 tar --concatenate --file "$tar_file" "$sub_file"
70 test $? -ne 0 && error "failed append submodule $sm to $tar_file"
71done
72exit 0