1 files changed, 182 insertions, 0 deletions

diff --git a/src/xorriso-usb.sh b/src/xorriso-usb.sh
new file mode 100644
index 0000000..61fcda0
--- /dev/null
+++ b/src/xorriso-usb.sh
@@ -0,0 +1,182 @@
+#!/bin/bash
+
+. samizdat-paths.sh || exit 1
+
+outdev=
+volid=SamizdatLive
+gpg_iso_path=gnupghome
+gnupghome=
+child_dir=$samizdat_child_dir
+vmlinuz_dir=$samizdat_isolinux_dir
+efi_dir=$samizdat_grub_efi_dir
+
+die() { printf "%s: Error: %s\n" "$0" "$*" >&2; exit 1; }
+
+TEMP="$(getopt -o '' --long adam,usb,detach,out:,test -n "$0" -- "$@")" ||
+    die 'getopt error'
+eval set -- "$TEMP"
+
+ADAM=; DETACH=; USB=
+while [ $# -gt 0 ]; do
+    case "$1" in
+        --adam)   shift; ADAM=y;;
+        --usb)    shift; USB=y;;
+        --detach) shift; DETACH=y;;
+        --test)   shift; QUICK_TEST=y;;
+        --out)    CMDLINE_OUTDEV="$2"; shift 2;;
+        --)       shift; break;;
+        *) die 'getopt error';;
+    esac
+done
+
+if [ $# = 0 ]; then
+    set -- debian-live-8.4.0-amd64-standard.btrfs layer.btrfs
+fi
+
+for fs; do
+    [ -f "$fs" ] || die "not a file: $fs"
+    shift
+    set -- "$@" "rootfs/${fs##*/}=$fs"
+done
+
+
+whole_device()
+{
+    case "$1" in
+        *-part?) false ;;
+        *-part??) false ;;
+        *-part???) false ;;
+        */usb\*) false ;;
+        *) true ;;
+    esac
+}
+
+confirm_usb()
+{
+    local msg="This will completely overwrite device:\n\n\t%s\n\nType 'yes' to confirm.\nContinue? "
+    printf "$msg" "$1" >&2
+    read line
+    case "$line" in
+        [yY][eE][sS]) return ;;
+        *) die "Aborted by user." ;;
+    esac
+}
+
+choose_usb()
+{
+    local devs maj
+    set -- /dev/disk/by-id/usb*
+    for dev; do
+        shift
+        whole_device "$dev" || continue
+        set -- "$@" "$dev"
+    done
+    if [ $# = 0 ]; then
+        die "no usb device found"
+    elif [ $# = 1 ]; then
+        confirm_usb "$1" || die impossible
+        outdev="$1"
+    else
+        die "multiple USB devices connected and choice between them is unimplemented.  ($*)"
+    fi
+}
+
+choose_cdrom()
+{
+    die 'choose_cdrom: unimplemented'
+}
+
+choose_outdev()
+{
+    if [ "$CMDLINE_OUTDEV" ]; then
+        outdev=$CMDLINE_OUTDEV~
+        NEED_STDIO=y
+    elif [ "$USB" ]; then
+        choose_usb
+        NEED_STDIO=y
+    else
+        choose_cdrom
+        NEED_STDIO=
+    fi
+}
+
+generate_keys()
+{
+    if [ "$ADAM" ]; then
+        kiki init || die 'kiki init failed'
+        gnupghome=/root/.gnupg
+    else
+        keygen.sh "$child_dir" || die "keygen.sh failed"
+        gnupghome=$child_dir/root/.gnupg
+        trap 'umount "$child_dir"; rmdir "$child_dir"' EXIT
+    fi
+}
+
+
+[ "$(id -u)" = 0 ] || die "you are not root."
+
+grub-efi.sh || die "grub-efi.sh failed"
+
+choose_outdev
+
+generate_keys
+
+if [ "$INPUT_DEVICE" ]; then
+    REPLACE_INITRD=
+    REMOVE_BTRFS=
+    ADD_BTRFS=
+else
+    REPLACE_INITRD=y
+    REMOVE_BTRFS=y
+    ADD_BTRFS=y
+fi
+
+if [ "$QUICK_TEST" ]; then
+    REMOVE_BTRFS=y
+    ADD_BTRFS=
+fi
+
+if [ "$REPLACE_INITRD" ]; then
+    initrd.sh
+fi
+
+(set -x
+xorriso \
+        ${INPUT_DEVICE:+ -indev "$INPUT_DEVICE" } \
+        -outdev ${NEED_STDIO:+stdio:}"$outdev" \
+        -blank as_needed \
+        -report_about mishap \
+        -return_with sorry 0 \
+        -volid "$volid" \
+        -pathspecs on \
+        \
+        \
+        ${REPLACE_INITRD:+ -rm_r linux -- -add linux="${vmlinuz_dir}" -- } \
+        ${REMOVE_BTRFS:+   -rm_r btrfs -- } \
+        ${ADD_BTRFS:+      -follow link -add "$@" -- -follow default } \
+        \
+        \
+        -rm_r "${gpg_iso_path}" -- \
+        -add "${gpg_iso_path}=${gnupghome}" -- \
+        \
+        \
+        -chown_r 0 / -- \
+        -chgrp_r 0 / -- \
+        -chmod_r go-rwx "${gpg_iso_path}" -- \
+        \
+        \
+        -as mkisofs -graft-points \
+        -b grub/i386-pc/eltorito.img  \
+        -no-emul-boot -boot-info-table \
+        --embedded-boot "${efi_dir}"/embedded.img \
+        --protective-msdos-label \
+        grub="${efi_dir}"/grub
+) || die "xorriso exited $?"
+
+case "$outdev" in
+    *~) [ -f "$outdev" ] && mv "$outdev" "${outdev%\~}" ;;
+esac
+
+if [ "$USB" -a "$DETACH" -a $? = 0 ]; then
+    udisks --detach "$outdev"
+fi