parted-usb.sh

1 files changed, 96 insertions, 0 deletions

diff --git a/src/parted-usb.sh b/src/parted-usb.sh
new file mode 100755
index 0000000..b19389d
--- /dev/null
+++ b/src/parted-usb.sh
@@ -0,0 +1,96 @@
+#!/bin/bash
+die()
+{
+    printf 'Error: %s\n' "$*" >&2
+    exit 1
+}
+KiB()
+{
+    printf %s $(("$1" * 1024))
+}
+MiB()
+{
+    KiB $(KiB "$1")
+}
+
+. samizdat-paths.sh || die 'samizdat-paths.sh not found'
+: ${GPG_INPUT_DIR:=/cdrom/gnupghome}
+
+if [[ $UID != 0 ]]
+then
+    exit 1
+fi
+
+for d in "$samizdat_linux_dir" "$GPG_INPUT_DIR"
+do
+    if ! test -d "$d"
+    then
+        exit 1
+    fi
+done
+
+end_keys=256 # megs
+
+target=fallacy.img.tmp
+
+initialize_target()
+{
+    rm -f "$target"
+    fallocate -l $(($(KiB 17) + $(MiB $end_keys))) "$target"
+}
+
+partition_target()
+{
+    parted "$target" -sm -a optimal                                          \
+           unit B                                                            \
+           mklabel gpt                                                       \
+           mkpart samizdat-grub 1MiB 8MiB                                    \
+           set 1 bios_grub on                                                \
+           mkpart samizdat-keys btrfs 64MiB ${end_keys}MiB
+}
+
+make_target_bootable()
+{
+    losetup -f "$target"
+    dev=$(losetup -j "$target" -O NAME --noheadings)
+
+    kpartx -vasas "$dev"
+    kdev=/dev/mapper/${dev##*/}
+
+    mnt=$target.mnt
+
+    mkfs.btrfs --mixed "$kdev"p2
+    mkdir -p "$mnt"
+    mount "$kdev"p2 "$mnt"
+    rsync  -a  --info=STATS  "$GPG_INPUT_DIR"/          "$mnt"/gnupghome/
+    rsync  -a  --info=STATS  "$samizdat_linux_dir"/     "$mnt"/linux/
+
+    boot_dir=$mnt/boot
+    mkdir -p "$boot_dir"/grub
+    cp -a grub.cfg "$boot_dir"/grub
+
+    # grub-install -v -d "$samizdat_grub_efi_dir"/grub/i386-pc --boot-directory "$mnt"/boot "$dev"
+    grub-install -v --boot-directory "$boot_dir" "$dev"
+}
+
+release_target()
+{
+    umount "$mnt"
+    kpartx -d "$dev"
+    losetup -d "$dev"
+}
+
+set -e
+
+if [ ! -e "$target" ]
+then
+    initialize_target
+    partition_target
+    make_target_bootable
+    release_target
+fi
+
+qemu-system-x86_64 -enable-kvm -drive file="$target",format=raw
+
+# rm -f "$target"
+