Merge branch 'jk/am-rerere-lock-fix'
[git.git] / t / t1509 / prepare-chroot.sh
blob6d47e2c725f7c7842a604b7a72fd4c4ca64e71bb
1 #!/bin/sh
3 die() {
4 echo >&2 "$@"
5 exit 1
6 }
8 xmkdir() {
9 while [ -n "$1" ]; do
10 [ -d "$1" ] || mkdir "$1" || die "Unable to mkdir $1"
11 shift
12 done
13 }
15 R="$1"
17 [ "$(id -u)" -eq 0 ] && die "This script should not be run as root, what if it does rm -rf /?"
18 [ -n "$R" ] || die "usage: prepare-chroot.sh <root>"
19 [ -x git ] || die "This script needs to be executed at git source code's top directory"
20 if [ -x /bin/busybox ]; then
21 BB=/bin/busybox
22 elif [ -x /usr/bin/busybox ]; then
23 BB=/usr/bin/busybox
24 else
25 die "You need busybox"
26 fi
28 xmkdir "$R" "$R/bin" "$R/etc" "$R/lib" "$R/dev"
29 touch "$R/dev/null"
30 echo "root:x:0:0:root:/:/bin/sh" > "$R/etc/passwd"
31 echo "$(id -nu):x:$(id -u):$(id -g)::$(pwd)/t:/bin/sh" >> "$R/etc/passwd"
32 echo "root::0:root" > "$R/etc/group"
33 echo "$(id -ng)::$(id -g):$(id -nu)" >> "$R/etc/group"
35 [ -x "$R$BB" ] || cp $BB "$R/bin/busybox"
36 for cmd in sh su ls expr tr basename rm mkdir mv id uname dirname cat true sed diff; do
37 ln -f -s /bin/busybox "$R/bin/$cmd"
38 done
40 mkdir -p "$R$(pwd)"
41 rsync --exclude-from t/t1509/excludes -Ha . "$R$(pwd)"
42 # Fake perl to reduce dependency, t1509 does not use perl, but some
43 # env might slip through, see test-lib.sh, unset.*PERL_PATH
44 sed 's|^PERL_PATH=.*|PERL_PATH=/bin/true|' GIT-BUILD-OPTIONS > "$R$(pwd)/GIT-BUILD-OPTIONS"
45 for cmd in git $BB;do
46 ldd $cmd | grep '/' | sed 's,.*\s\(/[^ ]*\).*,\1,' | while read i; do
47 mkdir -p "$R$(dirname $i)"
48 cp "$i" "$R/$i"
49 done
50 done
51 cat <<EOF
52 All is set up in $R, execute t1509 with the following commands:
54 sudo chroot $R /bin/su - $(id -nu)
55 IKNOWWHATIAMDOING=YES ./t1509-root-worktree.sh -v -i
57 When you are done, simply delete $R to clean up
58 EOF