1 files changed, 143 insertions, 0 deletions

diff --git a/src/initrd/common.sh b/src/initrd/common.sh
new file mode 100644
index 0000000..4aa8528
--- /dev/null
+++ b/src/initrd/common.sh
@@ -0,0 +1,143 @@
+#!/bin/sh
+REQUIRED_MB=250 # minimum megabytes available to offer install
+MENUFIFO=/menu.fifo
+DEBUG=y
+LOGBASE=/var/log
+
+debug_log()
+{
+  if [ -n "$DEBUG" ]; then
+    if [ -n "$1" ]; then
+      DEBUG_LOG=$LOGBASE/"$1".$$.log
+    else
+      DEBUG_LOG=$LOGBASE/$(basename $0).$$.log
+    fi
+    mkdir -p $LOGBASE
+    exec >>$DEBUG_LOG 2>&1
+    set -x
+  fi
+}
+addmenu()
+{
+  cat <<END >>$MENUFIFO # mind the tabs
+setItem "$1" "dummy" "$2" "$3"
+END
+}
+menutitle()
+{
+  printf 'setTitle "%s"\n' "$1" >>$MENUFIFO
+  printf 'setWelcomeText "%s"\n' "$2" >>$MENUFIFO
+}
+bootmenu()
+{
+  local do_trigger="$1" no_panic="$2"
+  OpenVT -f -c 7 -- dynmenu "$MENUFIFO" &&
+  chvt 7 &&
+  menutitle 'Samizdat\n\nAs the Internet develops there are\ntransitions in the management arrangements.\nThe time has come to take\na small step in one of those transitions.' 'Choose an installation target.'
+# menutitle 'Samizdat\nfreedom from surveillance\nno trusted authorities' 'Choose an installation target.'
+  addmenu "ramdisk" "[ Boot to RAM without installing anything ]" "menu-select boot-ram"
+  if [ $? != 0 -a ! "$no_panic" ]; then
+    panic "error loading boot menu!  the system won't be usable :("
+  fi
+  if [ "$do_trigger" ]; then
+    udevadm trigger --subsystem-match=block --action=add
+  fi
+}
+find_squashfs_root()
+{
+  # TODO: "make" puts the correct location in $iso_squashfs_dir.  Get
+  # information into this function!
+
+  bootwait samizdat-cdrom
+  for dir in /cdrom/live /cdrom/liveos /cdrom/aptosid /cdrom/*
+  do
+    [ -d "$dir" ] || continue;
+    if [ -f "$dir"/filesystem.module ]; then
+      while read fs; do
+        [ -f "$dir"/"$fs" ] && echo "$dir" "$fs"
+      done < "$dir"/filesystem.module
+      return
+    fi
+  done
+  for fs in /cdrom/live/filesystem.squashfs /cdrom/live/grml-small.squashfs /cdrom/liveos/squashfs.img /cdrom/aptosid/aptosid.* /cdrom/*/*.squashfs
+  do
+    if [ -f "$fs" ]; then
+      echo "${fs%/*}" "${fs##*/}"
+      break
+    fi
+  done
+}
+xtrace()
+{
+  case "$-" in
+  *x*) "$@" ;;
+  *) set -x; "$@"; set +x ;;
+  esac
+}
+sleepcmd() {
+  local t=$1
+  shift
+  echo "about to run '$*' (in $t)"
+  sleep $t
+  "$@"
+}
+sleep_forever_verbose() {
+  sleep 4294967295 &
+  local sleep=$!
+  warn "sleeping until you kill $sleep..."
+  wait $sleep
+}
+warn() { [ -z "$warnings" ] || echo "$@" >&2; }
+panic()
+{
+  set +x
+  exec </dev/tty1 >/dev/tty1 2>&1
+  reset
+  echo "[p$$] initramfs /init: fatal error: $@"
+  echo "[p$$] will now exec emergency shell"
+  export PS1="[p$$ \\w]# "
+  chvt 1
+  exec /bin/sh -i
+}
+bootwait()
+{
+  mkdir -p /bootwait
+  local i=$#; while [ $i -gt 0 ]; do
+    i=$((i-1))
+    local f="$1"; shift; set -- "$@" "/bootwait/$f" 
+  done
+  wait_for_files "$@"
+}
+bootdone()
+{
+  mkdir -p /bootwait
+  local i=$#; while [ $i -gt 0 ]; do
+    i=$((i-1))
+    local f="$1"; shift; set -- "$@" "/bootwait/$f" 
+  done
+  touch "$@"
+}
+my_openvt()
+{
+  /bin/openvt -c "$@"
+}
+
+# This runs before way before NTP and on a LiveCD we have no
+# reason to trust the system clock.
+gpg2_nobatch() { GPG_TTY=$(tty) command gpg2 --ignore-time-conflict --ignore-valid-from "$@"; }
+gpg2() { gpg2_nobatch --batch "$@"; }
+
+xcp() { if [ -f "$1" -a ! -f "$2" ]; then cp "$1" "$2"; fi; }
+
+mountsquashes()
+{
+  local name dirname basename
+  while read dirname basename && [ -d "$dirname" -a -f "$dirname/$basename" ]; do
+    name=${basename%.squashfs}
+    mkdir -p "/squashes/$name" || return 1
+    xcp "$dirname"/filesystem.module /squashes/filesystem.module || return 1
+    mountpoint -q "/squashes/$name" ||
+    mount -o ro,loop "$dirname/$basename" "/squashes/$name" || return 1
+  done
+}
+