t/t1509/prepare-chroot.sh

   1 #!/bin/sh
   2
   3 die() {
   4         echo >&2 "$@"
   5         exit 1
   6 }
   7
   8 xmkdir() {
   9         while [ -n "$1" ]; do
  10                 [ -d "$1" ] || mkdir "$1" || die "Unable to mkdir $1"
  11                 shift
  12         done
  13 }
  14
  15 R="$1"
  16
  17 [ -n "$R" ] || die "usage: prepare-chroot.sh <root>"
  18 [ -x git ] || die "This script needs to be executed at git source code's top directory"
  19 [ -x /bin/busybox ] || die "You need busybox"
  20
  21 xmkdir "$R" "$R/bin" "$R/etc" "$R/lib" "$R/dev"
  22 [ -c "$R/dev/null" ] || die "/dev/null is missing. Do mknod $R/dev/null c 1 3 && chmod 666 $R/dev/null"
  23 echo "root:x:0:0:root:/:/bin/sh" > "$R/etc/passwd"
  24 echo "$(id -nu):x:$(id -u):$(id -g)::$(pwd)/t:/bin/sh" >> "$R/etc/passwd"
  25 echo "root::0:root" > "$R/etc/group"
  26 echo "$(id -ng)::$(id -g):$(id -nu)" >> "$R/etc/group"
  27
  28 [ -x "$R/bin/busybox" ] || cp /bin/busybox "$R/bin/busybox"
  29 [ -x "$R/bin/sh" ] || ln -s /bin/busybox "$R/bin/sh"
  30 [ -x "$R/bin/su" ] || ln -s /bin/busybox "$R/bin/su"
  31
  32 mkdir -p "$R$(pwd)"
  33 rsync --exclude-from t/t1509/excludes -Ha . "$R$(pwd)"
  34 ldd git | grep '/' | sed 's,.*\s\(/[^ ]*\).*,\1,' | while read i; do
  35         mkdir -p "$R$(dirname $i)"
  36         cp "$i" "$R/$i"
  37 done
  38 echo "Execute this in root: 'chroot $R /bin/su - $(id -nu)'"