diff options
| author | Sahan Yılmaz <[email protected]> | 2025-02-23 13:16:00 +0300 |
|---|---|---|
| committer | Sahan Yılmaz <[email protected]> | 2025-02-23 13:16:00 +0300 |
| commit | 0b4e3ed390b203ea48107ecd3011a5ae0f0a7668 (patch) | |
| tree | 3578788d58c6b85565583dcd2ea00c67d3ab74c2 /debian | |
| parent | 6a4b9b0b467e7958d649cde62a875246fa390931 (diff) | |
first commit
Diffstat (limited to 'debian')
43 files changed, 2649 insertions, 0 deletions
diff --git a/debian/.debhelper/generated/romtal-sistem-dondurma/installed-by-dh_install b/debian/.debhelper/generated/romtal-sistem-dondurma/installed-by-dh_install new file mode 100644 index 0000000..5b121d1 --- /dev/null +++ b/debian/.debhelper/generated/romtal-sistem-dondurma/installed-by-dh_install @@ -0,0 +1,8 @@ +debian/tmp/etc/overlayroot.conf +debian/tmp/etc/update-motd.d +debian/tmp/usr/sbin/overlayroot-chroot +debian/tmp/bin/romtalsd +debian/tmp/usr/share/initramfs-tools/hooks/overlayroot +debian/tmp/usr/share/initramfs-tools/scripts/init-bottom/overlayroot +debian/tmp/usr/share/initramfs-tools/conf-hooks.d/overlayroot +debian/tmp/usr/share/man/man8/overlayroot-chroot.8 diff --git a/debian/.debhelper/generated/romtal-sistem-dondurma/installed-by-dh_installdocs b/debian/.debhelper/generated/romtal-sistem-dondurma/installed-by-dh_installdocs new file mode 100644 index 0000000..4ab221c --- /dev/null +++ b/debian/.debhelper/generated/romtal-sistem-dondurma/installed-by-dh_installdocs @@ -0,0 +1 @@ +./README diff --git a/debian/.debhelper/generated/romtal-sistem-dondurma/installed-by-dh_installman b/debian/.debhelper/generated/romtal-sistem-dondurma/installed-by-dh_installman new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/debian/.debhelper/generated/romtal-sistem-dondurma/installed-by-dh_installman diff --git a/debian/.debhelper/generated/romtal-sistem-dondurma/triggers b/debian/.debhelper/generated/romtal-sistem-dondurma/triggers new file mode 100644 index 0000000..7c98037 --- /dev/null +++ b/debian/.debhelper/generated/romtal-sistem-dondurma/triggers @@ -0,0 +1,2 @@ +# Triggers added by dh_installinitramfs/13.6ubuntu1 +activate-noawait update-initramfs diff --git a/debian/changelog b/debian/changelog new file mode 100644 index 0000000..c898f3e --- /dev/null +++ b/debian/changelog @@ -0,0 +1,5 @@ +romtal-sistem-dondurma (1.0.0-pardus) yirmiuc; urgency=medium + + * Initial release for PPA. + + -- Şahan Yılmaz <[email protected]> Sat, 22 Feb 2025 01:05:12 +0300 diff --git a/debian/compat b/debian/compat new file mode 100644 index 0000000..b1bd38b --- /dev/null +++ b/debian/compat @@ -0,0 +1 @@ +13 diff --git a/debian/control b/debian/control new file mode 100644 index 0000000..41aa965 --- /dev/null +++ b/debian/control @@ -0,0 +1,29 @@ +Source: romtal-sistem-dondurma +Section: admin +Priority: optional +Maintainer: Şahan Yılmaz <[email protected]> +Uploaders: Şahan Yılmaz <[email protected]> +Build-Depends: debhelper (>= 9) +Standards-Version: 1.0.0 +Homepage: https://www.launchpad.net/romtal-sistem-dondurma + + +Package: romtal-sistem-dondurma +Architecture: all +Depends: cryptsetup, + cryptsetup-bin, + initramfs-tools, + python3, + ${misc:Depends}, + ${shlibs:Depends} +Suggests: haveged +Description: use an overlayfs on top of a read-only root filesystem + This package adds functionality to an initramfs built by initramfs-tools. + When installed and configured, the initramfs will mount an overlayfs + filesystem on top of a read-only root volume. + . + The changes can be written to a in-memory temporary filesystem, a + filesystem on an existing block device, or a dmcrypt encrypted block + device. + R.O.M.T.A.L DeepFreeze, Linux sistemlerde sistem yapılandırmasının kalıcı olarak değişmesini önlemek ve geçici çalıştırma ortamları oluşturmak için tasarlanmış bir güvenlik ve kararlılık aracıdır. Bu paket, sistem dosyalarının veya yapılandırmaların yapılan değişikliklerle kalıcı hale gelmesini engellemek amacıyla “overlay” tekniğini kullanır. İşleyiş biçimi, sistemin gerçek dosya sistemi üzerine geçici bir katman (genellikle tmpfs tabanlı) ekleyerek, yapılan değişikliklerin sistem yeniden başlatıldığında otomatik olarak sıfırlanmasını sağlar. https://rasimoneltml.meb.k12.tr/ + diff --git a/debian/copyright b/debian/copyright new file mode 100644 index 0000000..7026857 --- /dev/null +++ b/debian/copyright @@ -0,0 +1,31 @@ +Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/ +Upstream-Name: cloud-initramfs-tools + +Files: * +Copyright: 2011 Scott Moser <[email protected]> +License: GPL-3.0+ + +Files: debian/* +Copyright: + 2011 Scott Moser <[email protected]> + 2012 Dustin Kirkland <[email protected]> + 2012 Axel Heider + 2024 Canonical Ltd. +License: GPL-3.0+ + +License: GPL-3.0+ + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + . + This package is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + . + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + . + On Debian systems, the complete text of the GNU General + Public License version 3 can be found in "/usr/share/common-licenses/GPL-3". diff --git a/debian/debhelper-build-stamp b/debian/debhelper-build-stamp new file mode 100644 index 0000000..4bed79b --- /dev/null +++ b/debian/debhelper-build-stamp @@ -0,0 +1 @@ +romtal-sistem-dondurma diff --git a/debian/docs b/debian/docs new file mode 100644 index 0000000..e845566 --- /dev/null +++ b/debian/docs @@ -0,0 +1 @@ +README diff --git a/debian/files b/debian/files new file mode 100644 index 0000000..ffa7057 --- /dev/null +++ b/debian/files @@ -0,0 +1,2 @@ +romtal-sistem-dondurma_1.0.0-pardus_all.deb admin optional +romtal-sistem-dondurma_1.0.0-pardus_amd64.buildinfo admin optional diff --git a/debian/romtal-sistem-dondurma.debhelper.log b/debian/romtal-sistem-dondurma.debhelper.log new file mode 100644 index 0000000..a37a5ef --- /dev/null +++ b/debian/romtal-sistem-dondurma.debhelper.log @@ -0,0 +1 @@ +dh_auto_install diff --git a/debian/romtal-sistem-dondurma.install b/debian/romtal-sistem-dondurma.install new file mode 100644 index 0000000..1347fe4 --- /dev/null +++ b/debian/romtal-sistem-dondurma.install @@ -0,0 +1,8 @@ +etc/overlayroot.conf +etc/update-motd.d +usr/sbin/overlayroot-chroot +bin/romtalsd +usr/share/initramfs-tools/hooks/overlayroot +usr/share/initramfs-tools/scripts/*/overlayroot +usr/share/initramfs-tools/conf-hooks.d/overlayroot +usr/share/man/man8/overlayroot-chroot.8 diff --git a/debian/romtal-sistem-dondurma.postinst b/debian/romtal-sistem-dondurma.postinst new file mode 100644 index 0000000..844c8d5 --- /dev/null +++ b/debian/romtal-sistem-dondurma.postinst @@ -0,0 +1,13 @@ +#!/bin/sh +set -e + +case "$1" in + configure) + dpkg-trigger update-initramfs;; + *) exit 0;; +esac + +#DEBHELPER# +exit 0 + +# vi: ts=4 noexpandtab diff --git a/debian/romtal-sistem-dondurma.postrm b/debian/romtal-sistem-dondurma.postrm new file mode 100644 index 0000000..7dddc1d --- /dev/null +++ b/debian/romtal-sistem-dondurma.postrm @@ -0,0 +1,14 @@ +#!/bin/sh +set -e + +case "$1" in + remove|purge) + dpkg-trigger update-initramfs;; + *) exit 0;; +esac + +#DEBHELPER# +exit 0 + +# vi: ts=4 noexpandtab + diff --git a/debian/romtal-sistem-dondurma.substvars b/debian/romtal-sistem-dondurma.substvars new file mode 100644 index 0000000..978fc8b --- /dev/null +++ b/debian/romtal-sistem-dondurma.substvars @@ -0,0 +1,2 @@ +misc:Depends= +misc:Pre-Depends= diff --git a/debian/romtal-sistem-dondurma/DEBIAN/conffiles b/debian/romtal-sistem-dondurma/DEBIAN/conffiles new file mode 100644 index 0000000..6423e32 --- /dev/null +++ b/debian/romtal-sistem-dondurma/DEBIAN/conffiles @@ -0,0 +1,2 @@ +/etc/overlayroot.conf +/etc/update-motd.d/97-overlayroot diff --git a/debian/romtal-sistem-dondurma/DEBIAN/control b/debian/romtal-sistem-dondurma/DEBIAN/control new file mode 100644 index 0000000..092453e --- /dev/null +++ b/debian/romtal-sistem-dondurma/DEBIAN/control @@ -0,0 +1,19 @@ +Package: romtal-sistem-dondurma +Version: 1.0.0-pardus +Architecture: all +Maintainer: Şahan Yılmaz <[email protected]> +Installed-Size: 68 +Depends: cryptsetup, cryptsetup-bin, initramfs-tools, python3 +Suggests: haveged +Section: admin +Priority: optional +Homepage: https://www.launchpad.net/romtal-sistem-dondurma +Description: use an overlayfs on top of a read-only root filesystem + This package adds functionality to an initramfs built by initramfs-tools. + When installed and configured, the initramfs will mount an overlayfs + filesystem on top of a read-only root volume. + . + The changes can be written to a in-memory temporary filesystem, a + filesystem on an existing block device, or a dmcrypt encrypted block + device. + R.O.M.T.A.L DeepFreeze, Linux sistemlerde sistem yapılandırmasının kalıcı olarak değişmesini önlemek ve geçici çalıştırma ortamları oluşturmak için tasarlanmış bir güvenlik ve kararlılık aracıdır. Bu paket, sistem dosyalarının veya yapılandırmaların yapılan değişikliklerle kalıcı hale gelmesini engellemek amacıyla “overlay” tekniğini kullanır. İşleyiş biçimi, sistemin gerçek dosya sistemi üzerine geçici bir katman (genellikle tmpfs tabanlı) ekleyerek, yapılan değişikliklerin sistem yeniden başlatıldığında otomatik olarak sıfırlanmasını sağlar. https://rasimoneltml.meb.k12.tr/ diff --git a/debian/romtal-sistem-dondurma/DEBIAN/md5sums b/debian/romtal-sistem-dondurma/DEBIAN/md5sums new file mode 100644 index 0000000..6773209 --- /dev/null +++ b/debian/romtal-sistem-dondurma/DEBIAN/md5sums @@ -0,0 +1,9 @@ +0f9f9c2689c58c758bc4b576c91d07a6 bin/romtalsd +78db8ba50efd0e523fe4b06083b67dcd usr/sbin/overlayroot-chroot +213f7cda911239a108c2c9eb87c9cc8d usr/share/doc/romtal-sistem-dondurma/README +829285930029ae87f0be17ff6ad6b765 usr/share/doc/romtal-sistem-dondurma/changelog.Debian.gz +d83c42e522a362610b374c35ca056cf8 usr/share/doc/romtal-sistem-dondurma/copyright +94661160a717bcc5639fef40546a7e14 usr/share/initramfs-tools/conf-hooks.d/overlayroot +349725f825813b1ca87b785ce13c09ee usr/share/initramfs-tools/hooks/overlayroot +1ed8aabdf65f9f565fbb26a193a25826 usr/share/initramfs-tools/scripts/init-bottom/overlayroot +e80e667ae504860007cd71006f05e999 usr/share/man/man8/overlayroot-chroot.8.gz diff --git a/debian/romtal-sistem-dondurma/DEBIAN/postinst b/debian/romtal-sistem-dondurma/DEBIAN/postinst new file mode 100755 index 0000000..ee0cf99 --- /dev/null +++ b/debian/romtal-sistem-dondurma/DEBIAN/postinst @@ -0,0 +1,13 @@ +#!/bin/sh +set -e + +case "$1" in + configure) + dpkg-trigger update-initramfs;; + *) exit 0;; +esac + + +exit 0 + +# vi: ts=4 noexpandtab diff --git a/debian/romtal-sistem-dondurma/DEBIAN/postrm b/debian/romtal-sistem-dondurma/DEBIAN/postrm new file mode 100755 index 0000000..6026a42 --- /dev/null +++ b/debian/romtal-sistem-dondurma/DEBIAN/postrm @@ -0,0 +1,14 @@ +#!/bin/sh +set -e + +case "$1" in + remove|purge) + dpkg-trigger update-initramfs;; + *) exit 0;; +esac + + +exit 0 + +# vi: ts=4 noexpandtab + diff --git a/debian/romtal-sistem-dondurma/DEBIAN/triggers b/debian/romtal-sistem-dondurma/DEBIAN/triggers new file mode 100644 index 0000000..7c98037 --- /dev/null +++ b/debian/romtal-sistem-dondurma/DEBIAN/triggers @@ -0,0 +1,2 @@ +# Triggers added by dh_installinitramfs/13.6ubuntu1 +activate-noawait update-initramfs diff --git a/debian/romtal-sistem-dondurma/bin/romtalsd b/debian/romtal-sistem-dondurma/bin/romtalsd new file mode 100755 index 0000000..0555449 --- /dev/null +++ b/debian/romtal-sistem-dondurma/bin/romtalsd @@ -0,0 +1,172 @@ +#!/usr/bin/env python3 +import os +import subprocess +import sys +import gi + +gi.require_version('Gtk', '3.0') +from gi.repository import Gtk, Gdk + +def run_as_root(cmd_list): + """ + Verilen komut listesini pkexec ile root olarak çalıştırır. + """ + try: + subprocess.run(["pkexec"] + cmd_list, check=True) + except subprocess.CalledProcessError as e: + raise RuntimeError(f"Komut hatası: {e.cmd}, Çıkış kodu: {e.returncode}") + +def get_mount_device(mount_point): + """ + /proc/mounts dosyasını okuyarak, verilen mount noktasının bağlı olduğu cihazı döner. + + Args: + mount_point (str): İncelenecek mount noktası, örneğin "/media/root-ro". + + Returns: + str veya None: Mount edilmiş aygıtın adı (örneğin, "/dev/sda1") + veya belirtilen mount noktası bulunamazsa None. + """ + try: + with open("/proc/mounts", "r") as f: + for line in f: + parts = line.split() + if parts[1] == mount_point: + return parts[0] + except Exception: + pass + return None + +def overlay_status(): + """ + /etc/overlayroot.conf dosyasını ve /media/root-rw mount noktasını kontrol eder: + - Eğer /media/root-rw mount edilmişse, overlay aktif kabul edilir. + - Aksi halde, /etc/overlayroot.conf dosyasını açar; içeriğinde "tmpfs" ifadesi varsa overlay aktif, + yoksa overlay pasif olarak belirlenir. + """ + # İlk olarak /media/root-rw mount edilip edilmediğini kontrol et + if get_mount_device("/media/root-rw"): + return True + + # /etc/overlayroot.conf kontrolü + conf_path = "/etc/overlayroot.conf" + if os.path.exists(conf_path): + try: + with open(conf_path, "r") as f: + content = f.read() + return "tmpfs" in content + except Exception: + return False + else: + # Dosya yoksa paket kontrolü yapılabilir + try: + result = subprocess.run(["dpkg", "-l", "romtal-sistem-dondurma"], capture_output=True, text=True) + return "overlayroot" in result.stdout + except Exception: + return False + +class OverlayrootGUI(Gtk.Window): + def __init__(self): + super().__init__(title="R.O.M.T.A.L Sistem Dondurma") + self.set_default_size(400, 250) + self.set_border_width(20) + + # Stil ayarları + css = b""" + button { + font: 15px Arial; + padding: 10px; + margin: 5px; + } + + """ + style_provider = Gtk.CssProvider() + style_provider.load_from_data(css) + Gtk.StyleContext.add_provider_for_screen( + Gdk.Screen.get_default(), + style_provider, + Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION + ) + + self.overlay_enabled = overlay_status() + self.create_ui() + + def create_ui(self): + grid = Gtk.Grid(column_spacing=10, row_spacing=10) + + self.enable_btn = Gtk.Button(label="Sistem Dondurma Aktif Et") + self.disable_btn = Gtk.Button(label="Sistem Dondurma Devre Dışı Bırak") + + self.enable_btn.connect("clicked", self.enable_overlayroot) + self.disable_btn.connect("clicked", self.disable_overlayroot) + + self.status_label = Gtk.Label() + self.update_status() + + # Footer label ekliyoruz + self.footer_label = Gtk.Label(label="Made By R.O.M.T.A.L | https://rasimoneltml.meb.k12.tr/") + + grid.attach(self.status_label, 0, 0, 2, 1) + grid.attach(self.enable_btn, 0, 1, 1, 1) + grid.attach(self.disable_btn, 1, 1, 1, 1) + grid.attach(self.footer_label, 0, 2, 2, 1) + + self.add(grid) + + def update_status(self): + status_text = "Şuanki Durum: " + ("Aktif" if self.overlay_enabled else "Devre Dışı") + self.status_label.set_markup(f"<b>{status_text}</b>") + self.enable_btn.set_sensitive(not self.overlay_enabled) + self.disable_btn.set_sensitive(self.overlay_enabled) + + def show_dialog(self, message, is_error=False): + dialog = Gtk.MessageDialog( + parent=self, + flags=0, + message_type=Gtk.MessageType.ERROR if is_error else Gtk.MessageType.INFO, + buttons=Gtk.ButtonsType.OK, + text=message + ) + dialog.run() + dialog.destroy() + + def enable_overlayroot(self, widget): + try: + cmd = [ + "sh", "-c", + ("rm -f /etc/overlayroot.conf && " + "echo 'overlayroot_cfgdisk=\"disable\"' > /etc/overlayroot.conf && " + "echo 'overlayroot=\"tmpfs\"' >> /etc/overlayroot.conf") + ] + run_as_root(cmd) + self.overlay_enabled = True + self.update_status() + self.show_dialog("Overlayroot aktif edildi!\nDeğişikliklerin geçerli olması için yeniden başlatın.") + except Exception as e: + self.show_dialog(f"Hata oluştu: {str(e)}", is_error=True) + + def disable_overlayroot(self, widget): + try: + device = get_mount_device("/media/root-ro") + if not device: + raise RuntimeError("'/media/root-ro' mount edilen cihaz bulunamadı.") + cmd = [ + "sh", "-c", + (f"mount -o remount,rw {device} && " + "rm -f /media/root-ro/etc/overlayroot.conf && " + "echo 'overlayroot_cfgdisk=\"disable\"' > /media/root-ro/etc/overlayroot.conf && " + "echo 'overlayroot=\"\"' >> /media/root-ro/etc/overlayroot.conf") + ] + run_as_root(cmd) + self.overlay_enabled = False + self.update_status() + self.show_dialog("Overlayroot devre dışı bırakıldı!\nDeğişikliklerin geçerli olması için yeniden başlatın.") + except Exception as e: + self.show_dialog(f"Hata oluştu: {str(e)}", is_error=True) + +if __name__ == "__main__": + win = OverlayrootGUI() + win.connect("destroy", Gtk.main_quit) + win.show_all() + Gtk.main() + diff --git a/debian/romtal-sistem-dondurma/etc/overlayroot.conf b/debian/romtal-sistem-dondurma/etc/overlayroot.conf new file mode 100644 index 0000000..d2cddfd --- /dev/null +++ b/debian/romtal-sistem-dondurma/etc/overlayroot.conf @@ -0,0 +1,2 @@ +overlayroot_cfgdisk="disabled" +overlayroot="" diff --git a/debian/romtal-sistem-dondurma/etc/update-motd.d/97-overlayroot b/debian/romtal-sistem-dondurma/etc/update-motd.d/97-overlayroot new file mode 100755 index 0000000..f201404 --- /dev/null +++ b/debian/romtal-sistem-dondurma/etc/update-motd.d/97-overlayroot @@ -0,0 +1,4 @@ +#!/bin/sh + +(egrep "overlayroot|/media/root-ro|/media/root-rw" /proc/mounts 2>/dev/null | sort -r) || true +echo diff --git a/debian/romtal-sistem-dondurma/usr/sbin/overlayroot-chroot b/debian/romtal-sistem-dondurma/usr/sbin/overlayroot-chroot new file mode 100755 index 0000000..6c37962 --- /dev/null +++ b/debian/romtal-sistem-dondurma/usr/sbin/overlayroot-chroot @@ -0,0 +1,93 @@ +#!/bin/sh +# +# overlayroot-chroot - chroot wrapper script for overlayroot +# Copyright (C) 2012 Dustin Kirkland <[email protected]> +# +# Authors: Dustin Kirkland <[email protected]> +# +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, version 3 of the License. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +set -e +set -f # disable path expansion +REMOUNTS="" + +error() { + printf "ERROR: $@\n" 1>&2 +} +fail() { [ $# -eq 0 ] || error "$@"; exit 1; } + +info() { + printf "INFO: $@\n" 1>&2 +} + +get_lowerdir() { + local overlay="" + overlay=$(awk \ + '$1 == "overlayroot" && $2 == "/" { print $0 }' /proc/mounts) + if [ -n "${overlay}" ]; then + lowerdir=${overlay##*lowerdir=} + lowerdir=${lowerdir%%,*} + if mountpoint "${lowerdir}" >/dev/null; then + _RET="${lowerdir}" + else + fail "Unable to find the overlayroot lowerdir" + fi + else + fail "Unable to find an overlayroot filesystem" + fi +} + +clean_exit() { + local mounts="$1" rc=0 d="" lowerdir="" mp="" + for d in ${mounts}; do + if mountpoint ${d} >/dev/null; then + umount ${d} || rc=1 + fi + done + for mp in $REMOUNTS; do + mount -o remount,ro "${mp}" || + error "Note that [${mp}] is still mounted read/write" + done + [ "$2" = "return" ] && return ${rc} || exit ${rc} +} + +# Try to find the overlayroot filesystem +get_lowerdir +lowerdir=${_RET} + +recurse_mps=$(awk '$1 ~ /^\/dev\// && $2 ~ starts { print $2 }' \ + starts="^$lowerdir/" /proc/mounts) + +mounts= +for d in proc run sys; do + if ! mountpoint "${lowerdir}/${d}" >/dev/null; then + mount -o bind "/${d}" "${lowerdir}/${d}" || fail "Unable to bind /${d}" + mounts="$mounts $lowerdir/$d" + trap "clean_exit \"${mounts}\" || true" EXIT HUP INT QUIT TERM + fi +done + +# Remount with read/write +for mp in "$lowerdir" $recurse_mps; do + mount -o remount,rw "${mp}" && + REMOUNTS="$mp $REMOUNTS" || + fail "Unable to remount [$mp] writable" +done +info "Chrooting into [${lowerdir}]" +chroot ${lowerdir} "$@" + +# Clean up mounts on exit +clean_exit "${mounts}" "return" +trap "" EXIT HUP INT QUIT TERM + +# vi: ts=4 noexpandtab diff --git a/debian/romtal-sistem-dondurma/usr/share/doc/romtal-sistem-dondurma/README b/debian/romtal-sistem-dondurma/usr/share/doc/romtal-sistem-dondurma/README new file mode 100644 index 0000000..cdf16af --- /dev/null +++ b/debian/romtal-sistem-dondurma/usr/share/doc/romtal-sistem-dondurma/README @@ -0,0 +1,55 @@ +This source repository builds packages that work with initramfs-tools +to add function to an initramfs that is likely cloud specific. + +Most likely, you do not want to install these packages unless you know +what you're doing. + +== growroot == +This initramfs module will re-write the partition table of a disk +so that the root partition has as much space as possible, bumping it +up to the edge of the disk, or the edge of the next partition. + +This is valueable in an environment where a volume can be grown past +its original size. It addresses the following situation: + * The initial [virtual] disk has a partition table on it + * The provisioning system creates a volume with additional space + at the end of the disk (after the root partition) + * the system boots, but cannot use the additional space without a reboot + because the kernel will not re-read the partition table information + of a disk that is in use. + +The way this is addressed is: + * in the initramfs unmount the root filesystem + * rewrite the partition table + * tell the kernel to re-read + * remount the root filesystem + +== rescuevol == +When installed the initramfs will check to see if any partitions +with a label of 'RESCUE_VOL' are attached. If such a volume is attached, +it will boot off that volume rather than the root volume. + +This is useful in a cloud environment, when the user is able to attach +and detach volumes to a running system, but has no other mechanism +for interupting of fixing a failed boot. It is analogous to inserting +a rescue CD into a system to recover from failure. + +It may be helpful in the case where the kernel and ramdisk can be loaded +from the instance, but the system is unusable. This could occur if +an error left ssh access broken or the system didn't come all the way up. + +The user could attach a correctly labeled volume, reboot the instance +and access the system to fix it. + +If the volume contains a file '/etc/rescuevol-ignore' it will be ignored. +This allows you to fix your instance, create that volume and *not* boot the +rescue volume on next boot + +== overlayroot == +Configure overlayfs filesystems over the root device based on +configuration provided by kernel command line or in-image config. + +see overlayroot/etc/overlayroot.conf for more information. + +== dyn-netconf == +see dyn-netconf/doc/README.txt diff --git a/debian/romtal-sistem-dondurma/usr/share/doc/romtal-sistem-dondurma/changelog.Debian.gz b/debian/romtal-sistem-dondurma/usr/share/doc/romtal-sistem-dondurma/changelog.Debian.gz Binary files differnew file mode 100644 index 0000000..49e2ce6 --- /dev/null +++ b/debian/romtal-sistem-dondurma/usr/share/doc/romtal-sistem-dondurma/changelog.Debian.gz diff --git a/debian/romtal-sistem-dondurma/usr/share/doc/romtal-sistem-dondurma/copyright b/debian/romtal-sistem-dondurma/usr/share/doc/romtal-sistem-dondurma/copyright new file mode 100644 index 0000000..7026857 --- /dev/null +++ b/debian/romtal-sistem-dondurma/usr/share/doc/romtal-sistem-dondurma/copyright @@ -0,0 +1,31 @@ +Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/ +Upstream-Name: cloud-initramfs-tools + +Files: * +Copyright: 2011 Scott Moser <[email protected]> +License: GPL-3.0+ + +Files: debian/* +Copyright: + 2011 Scott Moser <[email protected]> + 2012 Dustin Kirkland <[email protected]> + 2012 Axel Heider + 2024 Canonical Ltd. +License: GPL-3.0+ + +License: GPL-3.0+ + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + . + This package is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + . + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + . + On Debian systems, the complete text of the GNU General + Public License version 3 can be found in "/usr/share/common-licenses/GPL-3". diff --git a/debian/romtal-sistem-dondurma/usr/share/initramfs-tools/conf-hooks.d/overlayroot b/debian/romtal-sistem-dondurma/usr/share/initramfs-tools/conf-hooks.d/overlayroot new file mode 100644 index 0000000..3d812b6 --- /dev/null +++ b/debian/romtal-sistem-dondurma/usr/share/initramfs-tools/conf-hooks.d/overlayroot @@ -0,0 +1 @@ +export CRYPTSETUP=y diff --git a/debian/romtal-sistem-dondurma/usr/share/initramfs-tools/hooks/overlayroot b/debian/romtal-sistem-dondurma/usr/share/initramfs-tools/hooks/overlayroot new file mode 100755 index 0000000..406ccac --- /dev/null +++ b/debian/romtal-sistem-dondurma/usr/share/initramfs-tools/hooks/overlayroot @@ -0,0 +1,25 @@ +#!/bin/sh +set -e + +PREREQS="cryptsetup" +case $1 in + prereqs) echo "${PREREQS}"; exit 0;; +esac + +. /usr/share/initramfs-tools/hook-functions + +## +copy_exec /usr/bin/head /bin +copy_exec /usr/bin/sha512sum /bin +copy_exec /sbin/wipefs /sbin +copy_exec /sbin/cryptsetup /sbin +copy_exec /sbin/mke2fs /sbin + +# this is '||' only in case aesni_intel module isn't built (or others are built in) +manual_add_modules overlayfs overlay dm_mod dm_crypt aesni_intel || true + +# Grab as much true random data as possible, up to 4KB, and stash it into a +# random seed in the initramfs +dd if=/dev/random of="${DESTDIR}/.random-seed" bs=1 count=4096 iflag=nonblock >/dev/null 2>&1 || true + +# vi: ts=4 noexpandtab diff --git a/debian/romtal-sistem-dondurma/usr/share/initramfs-tools/scripts/init-bottom/overlayroot b/debian/romtal-sistem-dondurma/usr/share/initramfs-tools/scripts/init-bottom/overlayroot new file mode 100755 index 0000000..5c13811 --- /dev/null +++ b/debian/romtal-sistem-dondurma/usr/share/initramfs-tools/scripts/init-bottom/overlayroot @@ -0,0 +1,878 @@ +#!/bin/sh +# Copyright, 2012 Dustin Kirkland <[email protected]> +# Copyright, 2012 Scott Moser <[email protected]> +# Copyright, 2012 Axel Heider +# +# Based on scripts from +# Sebastian P. +# Nicholas A. Schembri State College PA USA +# Axel Heider +# Dustin Kirkland +# Scott Moser +# +# +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see +# <http://www.gnu.org/licenses/>. + +case "$1" in + # no pre-reqs + prereqs) echo ""; exit 0;; +esac + +. /scripts/functions + +PATH=/usr/sbin:/usr/bin:/sbin:/bin +MYTAG="overlayroot" + +TEMP_D="${TMPDIR:-/tmp}/${0##*/}.configs" +VARIABLES="overlayroot overlayroot_cfgdisk" + +# generic settings +# ${ROOT} and ${rootmnt} are predefined by caller of this script. Note that +# the root fs ${rootmnt} it mounted readonly on the initrams, which fits +# nicely for our purposes. +root_rw=/media/root-rw +root_ro=/media/root-ro +ROOTMNT=${rootmnt} # use global name to indicate created outside this +OVERLAYROOT_DEBUG=0 +# PERSIST_DIR will persist after pivot-root. It is used for log file +# and for the mktemp-made password file in crypt. +PERSIST_DIR=/run/initramfs +if [ ! -d "$PERSIST_DIR" -a -d /dev/.initramfs ]; then + PERSIST_DIR="/dev/.initramfs" +fi +if [ ! -d "$PERSIST_DIR" ]; then + mkdir -p "$PERSIST_DIR" || + echo "WARNING: $MYTAG: failed to create ${PERSIST_DIR}" 1>&2 +fi +LOG_FILE="${PERSIST_DIR}/${MYTAG}.log" + +log() { + "log_${1}_msg" "$MYTAG: $2"; + _debug "[$1]:" "$2" +} +log_fail() { log failure "$*"; } +log_success() { log success "$*"; } +log_warn() { log warning "$*"; } +fail() { + [ $# -eq 0 ] || log_fail "$@"; + exit 0; # why do we exit success? +} +cleanup() { + [ -d "${TEMP_D}" ] && rm -Rf "${TEMP_D}" +} +debug() { + _debug "$@" + [ "${OVERLAYROOT_DEBUG:-0}" = "0" ] && return + echo "$MYTAG:" "$@" +} +_debug() { + if [ "${DEBUG_BUSTED:-0}" ]; then + { echo "$@" >> "$LOG_FILE"; } 2>/dev/null || + { DEBUG_BUSTED=1; log_warn "debug is busted"; } + fi +} + +safe_string() { + local prev="$1" allowed="$2" cur="" + [ -n "$prev" ] || return 1 + while cur="${prev#[${allowed}]}"; do + [ -z "$cur" ] && return 0 + [ "$cur" = "$prev" ] && break + prev="$cur" + done + return 1 +} + +parse_string() { + # parse a key/value string like: + # name=mapper,pass=foo,fstype=ext4,mkfs=1 + # set variables under namespace 'ns'. + # _RET_name=mapper + # _RET_pass=foo + # _RET_fstype=ext4 + # set _RET to the list of variables found + local input="${1}" delim="${2:-,}" ns="${3:-_RET_}" + local oifs="$IFS" tok="" keys="" key="" val="" + + set -f; IFS="$delim"; set -- $input; IFS="$oifs"; set +f; + _RET="" + for tok in "$@"; do + key="${tok%%=*}" + val="${tok#${key}}" + val=${val#=} + safe_string "$key" "0-9a-zA-Z_" || + { debug "$key not a safe variable name"; return 1; } + eval "${ns}${key}"='${val}' || return 1 + keys="${keys} ${ns}${key}" + done + _RET=${keys# } + return +} +get_varval() { eval _RET='${'$1'}'; } +write_kernel_cmdline_cfg() { + local cfg="$1" desc="${2:-kernel cmdline}" + local cmdline="" var="" + read cmdline < /proc/cmdline || return 1 + : > "${cfg}" || return + set -f + { + echo "desc='${desc}'" + for tok in $cmdline; do + for var in $VARIABLES; do + if [ "$tok" = "$var" ]; then + log_warn "kernel param without value '${tok}'"; + continue; + elif [ "${tok}" = "${var}=" ]; then + echo "${var}=''"; + elif [ "${tok#${var}=}" != "${tok}" ]; then + echo "${var}='${tok#${var}=}'" + fi + done + done + } >> "$cfg" + set +f +} + +wait_for_dev() { + local dev="$1" timeout="${2:-0}" + [ -b "$dev" ] && return 0 + [ "$timeout" = "0" ] && return 1 + # wait-for-root writes fstype to stdout, redirect to null + wait-for-root "$dev" "$timeout" >/dev/null +} +crypto_setup() { + local fstype="ext4" pass="" mapname="secure" mkfs="1" dev="" + local timeout=0 + local entropy_sources="/proc/sys/kernel/random/boot_id /proc/sys/kernel/random/uuid /dev/urandom" + local seed="" rootseed="$ROOTMNT/var/lib/urandom/random-seed" + if [ ! -f "$rootseed" -a -f "$ROOTMNT/var/lib/systemd/random-seed" ]; then + rootseed="$ROOTMNT/var/lib/systemd/random-seed" + fi + # Seed the psuedo random number generator with available seeds + for seed in "/.random-seed" "$rootseed"; do + [ -f "${seed}" ] || + { debug "missing rng seed [${seed}]"; continue; } + cat "${seed}" > /dev/urandom || + debug "failed seeding /dev/urandom from $seed" + done + # this does necessary crypto setup and sets _RET + # to the appropriate block device (ie /dev/mapper/secure) + + # mkfs (default is 1): + # 0: never create filesystem + # 1: if pass is given and mount fails, create a new one + # if no pass given, create new + # 2: if pass is given and mount fails, fail + # if no pass given, create new + local options="$1" + parse_string "${options}" || + { log_fail "failed parsing '${options}'"; return 1; } + + fstype=${_RET_fstype:-${fstype}} + pass=${_RET_pass:-${pass}} + mapname=${_RET_mapname:-${mapname}} + mkfs=${_RET_mkfs:-${mkfs}} + dev=${_RET_dev:-${dev}} + timeout=${_RET_timeout:-${timeout}} + + [ -n "$dev" ] || + { log_fail "dev= argument not provided in '${options}'"; return 1; } + + short2dev "$dev" || + { log_fail "failed to convert $dev to a device"; return 1; } + dev="${_RET}" + + debug "fstype=${fstype} pass=${pass} mapname=${mapname}" + debug "mkfs=${mkfs} dev=${dev} timeout=${timeout}" + + wait_for_dev "$dev" "$timeout" || { + log_fail "crypt dev device $dev does not exist after ${timeout}s"; + return 1; + } + + if [ -n "$pass" ]; then + printf "%s" "$pass" | + cryptsetup luksOpen "$dev" "$mapname" --key-file - + if [ $? -eq 0 ]; then + local tdev="/dev/mapper/$mapname" + log_warn "reusing existing luks device at $dev" + wait_for_dev "$tdev" 20 || + { log_fail "$tdev did not appear"; return 1; } + _RET_DEVICE="/dev/mapper/$mapname" + return 0 + fi + if [ "$mkfs" != "1" ]; then + log_fail "luksOpen failed on $dev with mkfs=$mkfs"; + return 1; + fi + log_warn "re-opening $dev failed with mkfs=$mkfs will create new" + else + [ "$mkfs" = "0" ] && + { log_fail "mkfs=0, but no password provided"; return 1; } + entropy_sources="$entropy_sources $dev" + local tmpf="" pass_file="${PERSIST_DIR}/${MYTAG}.passwd" + tmpf=$(mktemp "${PERSIST_DIR}/${MYTAG}.XXXXXX") || + { log_fail "failed creation of password file"; return 1; } + stat -L /dev/* /proc/* /sys/* >"$tmpf" 2>&1 || + { log_warn "could not seed with stat entropy [$entropy_sources]"; } + head -c 4096 $entropy_sources >> "$tmpf" || + { log_fail "failed reading entropy [$entropy_sources]"; return 1; } + pass=$(sha512sum "$tmpf") || + { log_fail "failed generation of password"; return 1; } + pass=${pass%% *} + printf "%s" "${pass}" > "$tmpf" || + { log_fail "failed to record password to '$tmpf'"; return 1; } + mv "$tmpf" "${pass_file}" || + { log_fail "failed rename '$tmpf' to '${pass_file}'"; return 1; } + log_debug "stored password in ${pass_file}" + fi + + log_warn "setting up new luks device at $dev" + # clear backing device + wipefs -a "$dev" || + { log_fail "failed to wipe $dev"; return 1; } + printf "%s" "$pass" | cryptsetup luksFormat "$dev" --key-file - || + { log_fail "luksFormat $dev failed"; return 1; } + printf "%s" "$pass" | + cryptsetup luksOpen "$dev" "$mapname" --key-file - || + { log_fail "luksOpen $dev failed"; return 1; } + mke2fs -t "${fstype}" "/dev/mapper/${mapname}" || { + log_fail "failed to mkfs -t $fstype on map $mapname"; + return 1; + } + + _RET_DEVICE="/dev/mapper/$mapname" + return 0 +} + +dev_setup() { + local options="$1" dev="" timeout=0 path="/" + # options supported: + # dev=device,timeout=X,path=/ + parse_string "${options}" || + { log_fail "failed parsing '${options}'"; return 1; } + + dev=${_RET_dev:-${dev}} + timeout=${_RET_timeout:-${timeout}} + + [ -n "$dev" ] || + { log_fail "dev= argument not provided in '${options}'"; return 1; } + + short2dev "$dev" || + { log_fail "failed to convert $dev to a device"; return 1; } + dev="${_RET}" + + debug "dev=${dev} timeout=${timeout}" + + wait_for_dev "$dev" "$timeout" + _RET_DEVICE="$dev" +} + +clean_path() { + # remove '//' in a path. + local p="$1" tmp="" + while [ "${p#*//}" != "$p" ]; do + tmp=${p#*//} + p="${p%%//*}/${tmp}" + done + _RET="$p" +} + +get_workdir() { + local root_rw="$1" dir_prefix="$2" file="$3" + file=${file%/} + if [ "$file" = "/" -o "$file" = "" ]; then + file="_" + fi + clean_path "${root_rw}/${dir_prefix%/}-workdir/${file}" +} + +gen_fstab() { + # gen_fstab(mp) - generate a fabricated /etc/fstab for mount point $mp + local mp="$1" m_spec="" m_opts="" m_fstype="" + local spec file vfstype opts pass freq + + # just remove any trailing / + [ "$mp" != "/" ] && mp=${mp%/} + while read spec file vfstype opts pass freq; do + [ "$file" = "$mp" ] && { + m_spec="$spec" + m_opts="$opts" + m_fstype="$vfstype" + break + } + done </proc/mounts + [ -z "$m_spec" ] && { + log_warn "did not find root mount point $mp in /proc/mounts" + m_opts="/dev/root" + m_opts="defaults" + m_fstype="auto" + } + + echo "# fabricated by overlayroot, rootfs did not contain /etc/fstab" + echo "${m_spec} / ${m_fstype} ${m_opts} 0 0 " +} + +overlayrootify_fstab() { + # overlayrootify_fstab(input, root_ro, root_rw, dir_prefix, recurse, swap) + # read input fstab file, write an overlayroot version to stdout + # also returns (_RET) a list of directories that will need to be made + local input="$1" root_ro="${2:-/media/root-ro}" + local root_rw="${3:-/media/root-rw}" dir_prefix="${4:-/}" + local recurse=${5:-1} swap=${6:-0} fstype=${7:-overlayfs} + local hash="#" oline="" ospec="" upper="" dirs="" copy_opts="" copy_opt="" + local spec file vfstype opts pass freq line ro_line + local workdir="" use_orig="" relfile="" needs_workdir=false noauto="" + + [ -f "$input" ] || return 1 + + cat <<EOF +# +# This fstab is for overlayroot. The real one can be found at +# ${root_ro}/etc/fstab +# The original entry for '/' and other mounts have been updated to be placed +# under $root_ro. +# To permanently modify this (or any other file), you should change-root into +# a writable view of the underlying filesystem using: +# sudo overlayroot-chroot +# +EOF + + needs_workdir && needs_workdir=true || needs_workdir=false + while read spec file vfstype opts pass freq; do + [ "$file" = "/" ] && noauto="noauto" || noauto="" + line="$spec $file $vfstype $opts $pass $freq" + case ",$opts," in + *,ro,*) ro_opts="$opts";; + *) ro_opts="ro,${opts}";; + esac + ro_line="$spec ${root_ro}$file $vfstype" + ro_line="${ro_line} ${ro_opts}${noauto:+,${noauto}} $pass $freq" + + use_orig="" + if [ "${spec#${hash}}" != "$spec" ]; then + use_orig="comment" + elif [ -z "$freq" ]; then + use_orig="malformed-line" + else + case "$vfstype" in + vfat|fat) use_orig="fs-unsupported";; + proc|sys|tmpfs|dev|udev|debugfs) use_orig="fs-virtual";; + esac + fi + + if [ -n "$use_orig" ]; then + if [ "$use_orig" != "comment" ]; then + echo "$line # $MYTAG:$use_orig" + else + echo "$line" + fi + elif [ "$vfstype" = "swap" ]; then + if [ "$swap" = "0" ]; then + # comment out swap lines + echo "#$MYTAG:swap=${swap}#${line}" + elif [ "${spec#/}" != "${spec}" ] && + [ "${spec#/dev/}" = "${spec}" ]; then + # comment out swap files (spec starts with / and not in /dev) + echo "#$MYTAG:swapfile#${line}" + else + echo "${line}" + fi + else + ospec="${root_ro}${file}" + copy_opts="" + for copy_opt in nobootwait noauto nofail; do + case ",$opts," in + *,${copy_opt},*) + copy_opts="${copy_opts},${copy_opt}";; + esac + done + + clean_path "${root_rw}/${dir_prefix}${file}" + upper="$_RET" + + oline="${ospec} ${file} $fstype " + clean_path "${root_ro}${file}" + oline="${oline}lowerdir=$_RET" + oline="${oline},upperdir=${upper}${copy_opts}" + if [ "$fstype" = "overlayfs" -o "$fstype" = "overlay" ] && + ${needs_workdir}; then + get_workdir "$root_rw" "$dir_prefix" "$file" + workdir="$_RET" + oline="${oline},workdir=$workdir" + dirs="${dirs} $workdir" + fi + oline="${oline} $pass $freq" + + if [ "$recurse" != "0" -o "$file" = "/" ]; then + if [ "$file" = "/" ]; then + # this can confuse systemd (LP: #1723183) + echo "#$ro_line" + else + echo "$ro_line" + fi + echo "$oline" + dirs="${dirs} ${upper}" + else + echo "$line" + fi + fi + done < "$input" + _RET=${dirs# } +} + +short2dev() { + # turn 'LABEL=' or 'UUID=' into a device path + # also support /dev/* and 'vdb' or 'xvda' + local input="$1" oifs="$IFS" dev newdev s + case "$input" in + LABEL=*) + dev="${input#LABEL=}" + case "${dev}" in + */*) dev="$(echo "${dev}" | sed 's,/,\\x2f,g')";; + esac + dev="/dev/disk/by-label/${dev}" + ;; + UUID=*) dev="/dev/disk/by-uuid/${input#UUID=}" ;; + /dev/*) dev="${input}";; + *) dev="/dev/${input}";; + esac + _RET=$dev +} + +get_cfg() { + # get_cfg(device, file, cfg, timeout=0) + # copy the file $cfg off $device to $file, waiting $timeout for + # $device to appear + local dev="$1" file="$2" cfg="${3:-overlayroot.conf}" timeout="${4:-0}" + local cfgdev="" success=0 didmnt=false mp="" pre="get_cfg($dev):" + [ -z "$dev" ] && return 1 + + if [ "$timeout" != "0" ]; then + wait_for_dev "$dev" "$timeout" || + { debug "$pre did not appear in $timeout"; return 1; } + else + udevadm settle + fi + + short2dev "$dev" && cfgdev="$_RET" && [ -b "$cfgdev" ] || + { debug "$pre not present"; return 1; } + + if mp="${TEMP_D}/mp" && mkdir "$mp" && + mount -o ro "$cfgdev" "$mp"; then + if [ -f "$mp/$cfg" ]; then + cp "$mp/$cfg" "$file" && success=1 || + debug "$pre copy failed" + else + debug "$pre '$file' file not found" + fi + umount "$mp" + else + debug "$pre mount failed" + fi + [ -d "$mp" ] || rmdir "$mp" + [ $success -eq 1 ] || return 1 + _RET="$dev/$cfg" +} + +parse_cfg() { + # parse_cfg($file,$desc,$vars) + # this reasonably safely sources the "config" file $file + # and then declares the variables listed to stdout + # + # known issues: + # * sourced file could re-define 'echo' + # * just fails if a value has a ' in it + [ -f "$1" ] || return 0 + tick="'" sh -c ' + __tick=$tick + __file=$1; __desc=$2; + __unset__="__unset__" + shift 2 + __vars="$*" + readonly __tick __file __desc __vars + . "${__file}" + if [ $? -ne 0 ]; then + echo "failed source \"${__file}\" ($__desc)" 1>&2 + return 1 + fi + set -e + echo "desc=${__tick}${__desc}${__tick}" + for var in ${__vars}; do + eval val=\${${var}-${__unset__}} || + { echo "eval of $var failed"; exit 1; } + [ "${val#*${__tick}}" = "${val}" ] || { + echo "variable \"$var\" had single tick in it. fail"; + exit 1; + } + [ "${val}" = "${__unset__}" ] || + echo "$var=${__tick}${val}${__tick}" + done + ' -- "$@" +} + +readcfgd() { + local cfg_d="$1" + # this kind of stinks, each VARIABLE goes into global scope + local or="" or_cfgdisk="" + _RET_desc_oroot="" + _RET_desc_cfgdisk="" + set +f + for f in "${cfg_d}"/*; do + . "$f" || fail "failed reading $f" + [ "$or" != "${overlayroot}" ] && + _RET_desc_oroot="$desc" + [ "${or_cfgdisk}" != "${overlayroot_cfgdisk}" ] && + _RET_desc_cfgdisk="$desc" + or=${overlayroot} + or_cfgdisk=${overlayroot_cfgdisk} + done + set -f +} + +fix_upstart_overlayfs() { + # inotify events on an overlayfs underlay do not propogate through + # a newly created overlay. This causes job creation and deletion issues + # for upstart, which uses inotify on /etc/init. So ensure that the overlay + # explicitly has a /etc/init (LP: #1213925) + local root="$1" + local initctl="$root/sbin/initctl" + local eifile="/etc/init/.overlayfs-upstart-helper" + + [ -e "$initctl" -o -L "$initctl" ] || return 0 + [ -d "$root/etc/init" ] || return 0 + echo "#upstart needs help for overlayfs (LP: #1213925)." \ + > "$root/$eifile" || + { log_fail "failed to write $root/$eifile"; return 1; } + debug "created $eifile under $root (LP: #1213925)" +} + +needs_workdir() { + local uname_r="${UNAME_R}" + if [ -z "$uname_r" ]; then + uname_r=$(uname -r) && UNAME_R="$uname_r" || + { log_warn "failed to read uname!"; return 2; } + fi + # 3.18+ require 'workdir=' option. + case "${uname_r}" in + 2*|3.1[01234567]*|3.[0-9].*) return 1;; + *) return 0;; + esac +} + + +search_fs_driver() { + # search_fs_driver(driver1, driver2...) + # return the first supported filesystem driver in the list. + # if no drivers are provided, search default list. + # assumes that name in /proc/filesystems and module name are the same. + local m="" driver="" tab=' ' + for m in "$@"; do + grep -q "${tab}$m$" /proc/filesystems && driver="$m" && + { debug "/proc/filesystems support for '$m'"; break; } + done + if [ -z "$driver" ]; then + for m in "$@"; do + if modprobe -qb "$m"; then + if grep -q "${tab}$m$" /proc/filesystems; then + debug "loaded module '$m'"; + driver="$m" + break; + else + log_warn "loaded '$m' module but no '$m' in /proc/filesystems" + fi + fi + done + fi + [ -n "$driver" ] || + { debug "Unable to find driver/module. searched: $*"; return 1; } + _RET="$driver" +} + +cfgd="${TEMP_D}/configs" +mkdir -p "${cfgd}" || fail "failed to create tempdir" +trap cleanup EXIT + +# collect the different config locations into a file +# write individual config files in $cfgd that contain +{ +echo "desc='builtin'" +echo "overlayroot=''" +echo "overlayroot_cfgdisk='disabled'" +} > "$cfgd/00-builtin" + +write_kernel_cmdline_cfg "${cfgd}/90-kernel" || + fail "failed to read kernel command line!" + +parse_cfg "/conf/conf.d/overlayroot" "initramfs config" \ + "$VARIABLES" > "${cfgd}/10-initramfs" || + fail "failed parsing initramfs config" + +parse_cfg "${ROOTMNT}/etc/overlayroot.conf" "$ROOT/etc/overlayroot.conf" \ + "$VARIABLES" > "${cfgd}/20-root-config" || + fail "failed parsing root config" + +parse_cfg "${ROOTMNT}/etc/overlayroot.local.conf" \ + "$ROOT/etc/overlayroot.local.conf" \ + "$VARIABLES" > "${cfgd}/30-root-local-config" || + fail "failed parsing root config" + +# now read the trusted configs, to see if overlayroot_cfgdisk is set +readcfgd "$cfgd" || + fail "reading configs failed" +used_desc="${_RET_desc_oroot}" + +[ -n "${_RET_desc_cfgdisk}" ] && + debug "${_RET_desc_cfgdisk} set cfgdisk='${overlayroot_cfgdisk}'" + +# if one of the trusted configs above gave us set the overlayroot_cfgdisk +# variable, then look for such a device and read a config from it. +cfgdisk=0 +if [ "${overlayroot_cfgdisk:-disabled}" != "disabled" ] && + get_cfg "${overlayroot_cfgdisk}" "${TEMP_D}/cfgdisk"; then + desc=${_RET} + parse_cfg "${TEMP_D}/cfgdisk" "${desc}" "$VARIABLES" \ + > "${cfgd}/80-cfgdisk" || + fail "reading config from ${desc} failed" + used_desc="${_RET_desc_oroot}" + + # now read the parsed configs again. + readcfgd "$cfgd" || + fail "reading configs failed" + + [ -n "${_RET_desc_cfgdisk}" ] && + debug "${_RET_desc_cfgdisk} set cfgdisk=${overlayroot_cfgdisk}" + [ -n "${_RET_desc_oroot}" ] && + debug "${_RET_desc_oroot} set overlayroot=${overlayroot}" +fi + +opts="" +cfgmsg="${used_desc:+ (per ${used_desc})}" +case "${overlayroot:-disabled}" in + tmpfs|tmpfs:*) + mode="tmpfs" + opts="${overlayroot#tmpfs}"; + opts=${opts#:} + ;; + /dev/*|device:*) + case "$overlayroot" in + /dev/*) opts="dev=${overlayroot}";; + *) opts="${overlayroot#device:}";; + esac + dev_setup "${opts}" || + fail "failed setup overlay for ${overlayroot} [$opts]${cfgmsg}" + mode="device" + device="$_RET_DEVICE" + ;; + crypt:*) + mode="crypt" + opts=${overlayroot#crypt:} + crypto_setup "${opts}" || + fail "failed setup crypt for ${overlayroot}${cfgmsg}" + device="$_RET_DEVICE" + ;; + disabled) + debug "overlayroot disabled${cfgmsg}" + exit 0;; + *) + fail "invalid value for overlayroot: ${overlayroot}${cfgmsg}" + exit 0;; +esac + +parse_string "$opts" "," _RET_common_ +swap=${_RET_common_swap:-0} +recurse=${_RET_common_recurse:-1} +OVERLAYROOT_DEBUG=${_RET_common_debug:-${OVERLAYROOT_DEBUG}} +dir_prefix=${_RET_common_dir:-"/overlay"} +overlayroot_driver=${_RET_common_driver} + +read cmdline </proc/cmdline +cmdline=" $cmdline " +[ "${cmdline#* ro }" != "$cmdline" ] && cmdline_ro=true || cmdline_ro=false + +if [ "${overlayroot_driver:-auto}" = "auto" ]; then + search_fs_driver overlay overlayfs || + fail "Unable to find a driver. searched: overlay overlayfs" + overlayroot_driver="$_RET" +else + search_fs_driver ${overlayroot_driver} || + fail "Unable to find a driver named '${overlayroot_driver}'" + overlayroot_driver="$_RET" +fi + +debug "swap=$swap recurse=$recurse debug=$OVERLAYROOT_DEBUG dir=$dir_prefix" +debug "device=$device mode=$mode driver=${overlayroot_driver}" + +[ "$swap" = "0" -o "$swap" = "1" ] || + fail "invalid setting for swap: $swap. must be '0' or '1'" +[ "$recurse" = "0" -o "$recurse" = "1" ] || + fail "invalid setting for recurse: $recurse. must be '0' or '1'" + +log_warn "configuring overlayroot with driver=${overlayroot_driver} mode=$mode opts='$opts' per $used_desc" + +# settings based on overlayroot_driver +workdir="" +case "${overlayroot_driver}" in + overlayfs|overlay) + mount_type="${overlayroot_driver}" + mount_opts="-o lowerdir=${root_ro},upperdir=${root_rw}/${dir_prefix}" + if needs_workdir; then + get_workdir "$root_rw" "$dir_prefix" "/" + workdir="$_RET" + mount_opts="${mount_opts},workdir=$workdir" + fi + clean_path "${mount_opts} overlayroot ${ROOTMNT}" + mount_opts="$_RET" + ;; + aufs) + mount_type="aufs" + mount_opts="-o dirs=${root_rw}/${dir_prefix}:${root_ro}=ro aufs-root ${ROOTMNT}" + ;; + *) + log_fail "invalid overlayroot driver: ${overlayroot_driver}" + panic "$MYTAG" + ;; +esac + +# make the mount point on the init root fs ${root_rw} +mkdir -p "${root_rw}" || + fail "failed to create ${root_rw}" + +# make the mount point on the init root fs ${root_ro} +mkdir -p "${root_ro}" || + fail "failed to create ${root_ro}" + +# mount the backing device to $root_rw +if [ "$mode" = "tmpfs" ]; then + # mount a tmpfs using the device name tmpfs-root + mount -t tmpfs tmpfs-root "${root_rw}" || + fail "failed to create tmpfs" +else + # dev or crypto + mount "$device" "${root_rw}" || + fail "failed mount backing device $device" +fi + +mkdir -p "${root_rw}/${dir_prefix}" || + fail "failed to create ${dir_prefix} on ${device}" + +[ -z "$workdir" ] || mkdir -p "$workdir" || + fail "failed to create workdir '$workdir' on ${device}" + +# root is mounted on ${ROOTMNT}, move it to ${ROOT_RO}. +mount --move "${ROOTMNT}" "${root_ro}" || + fail "failed to move root away from ${ROOTMNT} to ${root_ro}" + +# there is nothing left at ${ROOTMNT} now. So for any error we get we should +# either do recovery to restore ${ROOTMNT} for drop to a initramfs shell using +# "panic". Otherwise the boot process is very likely to fail with even more +# errors and leave the system in a wired state. + +# mount virtual fs ${ROOTMNT} with rw-fs ${root_rw} on top or ro-fs ${root_ro}. +debug mount -t "$mount_type" $mount_opts +mount -t "$mount_type" $mount_opts +if [ $? -ne 0 ]; then + log_fail "failed to create new ro/rw layered ${ROOTMNT}" + log_fail "mount command was: mount -t $mount_type $mount_opts" + # do recovery and try restoring the mount for ${ROOTMNT} + mount --move ${root_ro} ${ROOTMNT} + if [ $? -ne 0 ]; then + # thats bad, drop to shell to let the user try fixing this + log_fail "RECOVERY_ERROR: failed to move $root_ro back to ${ROOTMNT}" + panic "$MYTAG" + fi + exit 0 +fi + +# now the real root fs is on ${root_ro} of the init file system, our +# layered root fs is set up at ${ROOTMNT}. So we can write anywhere in +# {ROOTMNT} and the changes will end up in ${root_rw} while ${root_ro} it +# not touched. However ${root_ro} and ${root_rw} are on the initramfs root +# fs, which will be removed an replaced by ${ROOTMNT}. Thus we must move +# ${root_ro} and ${root_rw} to the rootfs visible later, ie. +# ${ROOTMNT}${root_ro} and ${ROOTMNT}${root_ro}. Since the layered ro/rw +# is already up, these changes also end up on ${root_rw} while ${root_ro} +# is not touched. + +# move mount from ${root_ro} to ${ROOTMNT}${root_ro} +mkdir -p "${ROOTMNT}/${root_ro}" +mount --move ${root_ro} "${ROOTMNT}${root_ro}" || + fail "failed to move ${root_ro} to ${ROOTMNT}${root_ro}" + +# move mount from ${root_rw} to ${ROOTMNT}${root_rw} +[ -d ${ROOTMNT}${root_rw} ] || mkdir -p ${ROOTMNT}${root_rw} +mount --move "${root_rw}" "${ROOTMNT}${root_rw}" || + fail "failed to move ${root_rw} to ${ROOTMNT}${root_rw}" + +# technically, everything is set up nicely now. Since ${ROOTMNT} had beend +# mounted read-only on the initfamfs already, ${ROOTMNT}${root_ro} is it, +# too. Now we init process could run - but unfortunately, we may have to +# prepare some more things here. +# Basically, there are two ways to deal with the read-only root fs. If the +# system is made aware of this, things can be simplified a lot. If it is +# not, things need to be done to our best knowledge. +# +# So we assume here, the system does not really know about our read-only +# root fs. +# +# Let's deal with /etc/fstab first. It usually contains an entry for the +# root fs, which is no longer valid now. We have to remove it and add our +# new ${root_ro} entry. +# Remember we are still on the initramfs root fs here, so we have to work +# on ${ROOTMNT}/etc/fstab. The original fstab is +# ${ROOTMNT}${root_ro}/etc/fstab. +source_fstab="$ROOTMNT/${root_ro}/etc/fstab" +if [ ! -f "$source_fstab" ] && [ "$cmdline_ro" = "true" ]; then + debug "rootfs did not contain /etc/fstab, creating" \ + "based on kernel cmdline" + source_fstab="${TEMP_D}/fstab" + gen_fstab "${ROOTMNT}${root_ro}" > "$source_fstab" || + log_fail "gen_fstab failed for $ROOTMNT/$root_ro" +fi + +if [ -f "$source_fstab" ]; then + overlayrootify_fstab "$source_fstab" "$root_ro" \ + "$root_rw" "$dir_prefix" "$recurse" "$swap" "${overlayroot_driver}" \ + > "${ROOTMNT}/etc/fstab" || + log_fail "failed to modify /etc/fstab" +else + debug "rootfs did not contain /etc/fstab." +fi + +# we have to make the directories in ${root_rw} because if they do not +# exist, then the 'upper=' argument to overlayfs will fail. +for d in ${_RET}; do + mkdir -p "${ROOTMNT}/$d" +done + +if [ "${overlayroot_driver}" = "overlayfs" ]; then + fix_upstart_overlayfs "$ROOTMNT" || + log_fail "failed to fix upstart for overlayfs" +fi + +# if / is supposed to be mounted read-only (cmdline with 'ro') +# then mount our overlayfs as read-only just to be more normal +if [ "${cmdline_ro}" = "true" ]; then + mount -o remount,ro "$ROOTMNT" || + log_fail "failed to remount overlayroot read-only" + debug "mounted $ROOTMNT read-only per kernel cmdline" +fi + +msg="configured root with '$overlayroot' using ${overlayroot_driver} per" +msg="$msg ${used_desc}" +log_success "$msg" + +exit 0 +# vi: ts=4 noexpandtab diff --git a/debian/romtal-sistem-dondurma/usr/share/man/man8/overlayroot-chroot.8.gz b/debian/romtal-sistem-dondurma/usr/share/man/man8/overlayroot-chroot.8.gz Binary files differnew file mode 100644 index 0000000..8660dfc --- /dev/null +++ b/debian/romtal-sistem-dondurma/usr/share/man/man8/overlayroot-chroot.8.gz diff --git a/debian/rules b/debian/rules new file mode 100755 index 0000000..bf46283 --- /dev/null +++ b/debian/rules @@ -0,0 +1,13 @@ +#!/usr/bin/make -f + +# Uncomment this to turn on verbose mode. +#export DH_VERBOSE=1 + +# This has to be exported to make some magic below work. +export DH_OPTIONS + +%: + dh $@ + +override_dh_auto_install: + dh_auto_install --destdir=debian/tmp diff --git a/debian/source/format b/debian/source/format new file mode 100644 index 0000000..89ae9db --- /dev/null +++ b/debian/source/format @@ -0,0 +1 @@ +3.0 (native) diff --git a/debian/tmp/bin/romtalsd b/debian/tmp/bin/romtalsd new file mode 100755 index 0000000..0555449 --- /dev/null +++ b/debian/tmp/bin/romtalsd @@ -0,0 +1,172 @@ +#!/usr/bin/env python3 +import os +import subprocess +import sys +import gi + +gi.require_version('Gtk', '3.0') +from gi.repository import Gtk, Gdk + +def run_as_root(cmd_list): + """ + Verilen komut listesini pkexec ile root olarak çalıştırır. + """ + try: + subprocess.run(["pkexec"] + cmd_list, check=True) + except subprocess.CalledProcessError as e: + raise RuntimeError(f"Komut hatası: {e.cmd}, Çıkış kodu: {e.returncode}") + +def get_mount_device(mount_point): + """ + /proc/mounts dosyasını okuyarak, verilen mount noktasının bağlı olduğu cihazı döner. + + Args: + mount_point (str): İncelenecek mount noktası, örneğin "/media/root-ro". + + Returns: + str veya None: Mount edilmiş aygıtın adı (örneğin, "/dev/sda1") + veya belirtilen mount noktası bulunamazsa None. + """ + try: + with open("/proc/mounts", "r") as f: + for line in f: + parts = line.split() + if parts[1] == mount_point: + return parts[0] + except Exception: + pass + return None + +def overlay_status(): + """ + /etc/overlayroot.conf dosyasını ve /media/root-rw mount noktasını kontrol eder: + - Eğer /media/root-rw mount edilmişse, overlay aktif kabul edilir. + - Aksi halde, /etc/overlayroot.conf dosyasını açar; içeriğinde "tmpfs" ifadesi varsa overlay aktif, + yoksa overlay pasif olarak belirlenir. + """ + # İlk olarak /media/root-rw mount edilip edilmediğini kontrol et + if get_mount_device("/media/root-rw"): + return True + + # /etc/overlayroot.conf kontrolü + conf_path = "/etc/overlayroot.conf" + if os.path.exists(conf_path): + try: + with open(conf_path, "r") as f: + content = f.read() + return "tmpfs" in content + except Exception: + return False + else: + # Dosya yoksa paket kontrolü yapılabilir + try: + result = subprocess.run(["dpkg", "-l", "romtal-sistem-dondurma"], capture_output=True, text=True) + return "overlayroot" in result.stdout + except Exception: + return False + +class OverlayrootGUI(Gtk.Window): + def __init__(self): + super().__init__(title="R.O.M.T.A.L Sistem Dondurma") + self.set_default_size(400, 250) + self.set_border_width(20) + + # Stil ayarları + css = b""" + button { + font: 15px Arial; + padding: 10px; + margin: 5px; + } + + """ + style_provider = Gtk.CssProvider() + style_provider.load_from_data(css) + Gtk.StyleContext.add_provider_for_screen( + Gdk.Screen.get_default(), + style_provider, + Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION + ) + + self.overlay_enabled = overlay_status() + self.create_ui() + + def create_ui(self): + grid = Gtk.Grid(column_spacing=10, row_spacing=10) + + self.enable_btn = Gtk.Button(label="Sistem Dondurma Aktif Et") + self.disable_btn = Gtk.Button(label="Sistem Dondurma Devre Dışı Bırak") + + self.enable_btn.connect("clicked", self.enable_overlayroot) + self.disable_btn.connect("clicked", self.disable_overlayroot) + + self.status_label = Gtk.Label() + self.update_status() + + # Footer label ekliyoruz + self.footer_label = Gtk.Label(label="Made By R.O.M.T.A.L | https://rasimoneltml.meb.k12.tr/") + + grid.attach(self.status_label, 0, 0, 2, 1) + grid.attach(self.enable_btn, 0, 1, 1, 1) + grid.attach(self.disable_btn, 1, 1, 1, 1) + grid.attach(self.footer_label, 0, 2, 2, 1) + + self.add(grid) + + def update_status(self): + status_text = "Şuanki Durum: " + ("Aktif" if self.overlay_enabled else "Devre Dışı") + self.status_label.set_markup(f"<b>{status_text}</b>") + self.enable_btn.set_sensitive(not self.overlay_enabled) + self.disable_btn.set_sensitive(self.overlay_enabled) + + def show_dialog(self, message, is_error=False): + dialog = Gtk.MessageDialog( + parent=self, + flags=0, + message_type=Gtk.MessageType.ERROR if is_error else Gtk.MessageType.INFO, + buttons=Gtk.ButtonsType.OK, + text=message + ) + dialog.run() + dialog.destroy() + + def enable_overlayroot(self, widget): + try: + cmd = [ + "sh", "-c", + ("rm -f /etc/overlayroot.conf && " + "echo 'overlayroot_cfgdisk=\"disable\"' > /etc/overlayroot.conf && " + "echo 'overlayroot=\"tmpfs\"' >> /etc/overlayroot.conf") + ] + run_as_root(cmd) + self.overlay_enabled = True + self.update_status() + self.show_dialog("Overlayroot aktif edildi!\nDeğişikliklerin geçerli olması için yeniden başlatın.") + except Exception as e: + self.show_dialog(f"Hata oluştu: {str(e)}", is_error=True) + + def disable_overlayroot(self, widget): + try: + device = get_mount_device("/media/root-ro") + if not device: + raise RuntimeError("'/media/root-ro' mount edilen cihaz bulunamadı.") + cmd = [ + "sh", "-c", + (f"mount -o remount,rw {device} && " + "rm -f /media/root-ro/etc/overlayroot.conf && " + "echo 'overlayroot_cfgdisk=\"disable\"' > /media/root-ro/etc/overlayroot.conf && " + "echo 'overlayroot=\"\"' >> /media/root-ro/etc/overlayroot.conf") + ] + run_as_root(cmd) + self.overlay_enabled = False + self.update_status() + self.show_dialog("Overlayroot devre dışı bırakıldı!\nDeğişikliklerin geçerli olması için yeniden başlatın.") + except Exception as e: + self.show_dialog(f"Hata oluştu: {str(e)}", is_error=True) + +if __name__ == "__main__": + win = OverlayrootGUI() + win.connect("destroy", Gtk.main_quit) + win.show_all() + Gtk.main() + diff --git a/debian/tmp/etc/overlayroot.conf b/debian/tmp/etc/overlayroot.conf new file mode 100644 index 0000000..d2cddfd --- /dev/null +++ b/debian/tmp/etc/overlayroot.conf @@ -0,0 +1,2 @@ +overlayroot_cfgdisk="disabled" +overlayroot="" diff --git a/debian/tmp/etc/update-motd.d/97-overlayroot b/debian/tmp/etc/update-motd.d/97-overlayroot new file mode 100755 index 0000000..f201404 --- /dev/null +++ b/debian/tmp/etc/update-motd.d/97-overlayroot @@ -0,0 +1,4 @@ +#!/bin/sh + +(egrep "overlayroot|/media/root-ro|/media/root-rw" /proc/mounts 2>/dev/null | sort -r) || true +echo diff --git a/debian/tmp/usr/sbin/overlayroot-chroot b/debian/tmp/usr/sbin/overlayroot-chroot new file mode 100755 index 0000000..6c37962 --- /dev/null +++ b/debian/tmp/usr/sbin/overlayroot-chroot @@ -0,0 +1,93 @@ +#!/bin/sh +# +# overlayroot-chroot - chroot wrapper script for overlayroot +# Copyright (C) 2012 Dustin Kirkland <[email protected]> +# +# Authors: Dustin Kirkland <[email protected]> +# +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, version 3 of the License. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +set -e +set -f # disable path expansion +REMOUNTS="" + +error() { + printf "ERROR: $@\n" 1>&2 +} +fail() { [ $# -eq 0 ] || error "$@"; exit 1; } + +info() { + printf "INFO: $@\n" 1>&2 +} + +get_lowerdir() { + local overlay="" + overlay=$(awk \ + '$1 == "overlayroot" && $2 == "/" { print $0 }' /proc/mounts) + if [ -n "${overlay}" ]; then + lowerdir=${overlay##*lowerdir=} + lowerdir=${lowerdir%%,*} + if mountpoint "${lowerdir}" >/dev/null; then + _RET="${lowerdir}" + else + fail "Unable to find the overlayroot lowerdir" + fi + else + fail "Unable to find an overlayroot filesystem" + fi +} + +clean_exit() { + local mounts="$1" rc=0 d="" lowerdir="" mp="" + for d in ${mounts}; do + if mountpoint ${d} >/dev/null; then + umount ${d} || rc=1 + fi + done + for mp in $REMOUNTS; do + mount -o remount,ro "${mp}" || + error "Note that [${mp}] is still mounted read/write" + done + [ "$2" = "return" ] && return ${rc} || exit ${rc} +} + +# Try to find the overlayroot filesystem +get_lowerdir +lowerdir=${_RET} + +recurse_mps=$(awk '$1 ~ /^\/dev\// && $2 ~ starts { print $2 }' \ + starts="^$lowerdir/" /proc/mounts) + +mounts= +for d in proc run sys; do + if ! mountpoint "${lowerdir}/${d}" >/dev/null; then + mount -o bind "/${d}" "${lowerdir}/${d}" || fail "Unable to bind /${d}" + mounts="$mounts $lowerdir/$d" + trap "clean_exit \"${mounts}\" || true" EXIT HUP INT QUIT TERM + fi +done + +# Remount with read/write +for mp in "$lowerdir" $recurse_mps; do + mount -o remount,rw "${mp}" && + REMOUNTS="$mp $REMOUNTS" || + fail "Unable to remount [$mp] writable" +done +info "Chrooting into [${lowerdir}]" +chroot ${lowerdir} "$@" + +# Clean up mounts on exit +clean_exit "${mounts}" "return" +trap "" EXIT HUP INT QUIT TERM + +# vi: ts=4 noexpandtab diff --git a/debian/tmp/usr/share/initramfs-tools/conf-hooks.d/overlayroot b/debian/tmp/usr/share/initramfs-tools/conf-hooks.d/overlayroot new file mode 100644 index 0000000..3d812b6 --- /dev/null +++ b/debian/tmp/usr/share/initramfs-tools/conf-hooks.d/overlayroot @@ -0,0 +1 @@ +export CRYPTSETUP=y diff --git a/debian/tmp/usr/share/initramfs-tools/hooks/overlayroot b/debian/tmp/usr/share/initramfs-tools/hooks/overlayroot new file mode 100755 index 0000000..406ccac --- /dev/null +++ b/debian/tmp/usr/share/initramfs-tools/hooks/overlayroot @@ -0,0 +1,25 @@ +#!/bin/sh +set -e + +PREREQS="cryptsetup" +case $1 in + prereqs) echo "${PREREQS}"; exit 0;; +esac + +. /usr/share/initramfs-tools/hook-functions + +## +copy_exec /usr/bin/head /bin +copy_exec /usr/bin/sha512sum /bin +copy_exec /sbin/wipefs /sbin +copy_exec /sbin/cryptsetup /sbin +copy_exec /sbin/mke2fs /sbin + +# this is '||' only in case aesni_intel module isn't built (or others are built in) +manual_add_modules overlayfs overlay dm_mod dm_crypt aesni_intel || true + +# Grab as much true random data as possible, up to 4KB, and stash it into a +# random seed in the initramfs +dd if=/dev/random of="${DESTDIR}/.random-seed" bs=1 count=4096 iflag=nonblock >/dev/null 2>&1 || true + +# vi: ts=4 noexpandtab diff --git a/debian/tmp/usr/share/initramfs-tools/scripts/init-bottom/overlayroot b/debian/tmp/usr/share/initramfs-tools/scripts/init-bottom/overlayroot new file mode 100755 index 0000000..5c13811 --- /dev/null +++ b/debian/tmp/usr/share/initramfs-tools/scripts/init-bottom/overlayroot @@ -0,0 +1,878 @@ +#!/bin/sh +# Copyright, 2012 Dustin Kirkland <[email protected]> +# Copyright, 2012 Scott Moser <[email protected]> +# Copyright, 2012 Axel Heider +# +# Based on scripts from +# Sebastian P. +# Nicholas A. Schembri State College PA USA +# Axel Heider +# Dustin Kirkland +# Scott Moser +# +# +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see +# <http://www.gnu.org/licenses/>. + +case "$1" in + # no pre-reqs + prereqs) echo ""; exit 0;; +esac + +. /scripts/functions + +PATH=/usr/sbin:/usr/bin:/sbin:/bin +MYTAG="overlayroot" + +TEMP_D="${TMPDIR:-/tmp}/${0##*/}.configs" +VARIABLES="overlayroot overlayroot_cfgdisk" + +# generic settings +# ${ROOT} and ${rootmnt} are predefined by caller of this script. Note that +# the root fs ${rootmnt} it mounted readonly on the initrams, which fits +# nicely for our purposes. +root_rw=/media/root-rw +root_ro=/media/root-ro +ROOTMNT=${rootmnt} # use global name to indicate created outside this +OVERLAYROOT_DEBUG=0 +# PERSIST_DIR will persist after pivot-root. It is used for log file +# and for the mktemp-made password file in crypt. +PERSIST_DIR=/run/initramfs +if [ ! -d "$PERSIST_DIR" -a -d /dev/.initramfs ]; then + PERSIST_DIR="/dev/.initramfs" +fi +if [ ! -d "$PERSIST_DIR" ]; then + mkdir -p "$PERSIST_DIR" || + echo "WARNING: $MYTAG: failed to create ${PERSIST_DIR}" 1>&2 +fi +LOG_FILE="${PERSIST_DIR}/${MYTAG}.log" + +log() { + "log_${1}_msg" "$MYTAG: $2"; + _debug "[$1]:" "$2" +} +log_fail() { log failure "$*"; } +log_success() { log success "$*"; } +log_warn() { log warning "$*"; } +fail() { + [ $# -eq 0 ] || log_fail "$@"; + exit 0; # why do we exit success? +} +cleanup() { + [ -d "${TEMP_D}" ] && rm -Rf "${TEMP_D}" +} +debug() { + _debug "$@" + [ "${OVERLAYROOT_DEBUG:-0}" = "0" ] && return + echo "$MYTAG:" "$@" +} +_debug() { + if [ "${DEBUG_BUSTED:-0}" ]; then + { echo "$@" >> "$LOG_FILE"; } 2>/dev/null || + { DEBUG_BUSTED=1; log_warn "debug is busted"; } + fi +} + +safe_string() { + local prev="$1" allowed="$2" cur="" + [ -n "$prev" ] || return 1 + while cur="${prev#[${allowed}]}"; do + [ -z "$cur" ] && return 0 + [ "$cur" = "$prev" ] && break + prev="$cur" + done + return 1 +} + +parse_string() { + # parse a key/value string like: + # name=mapper,pass=foo,fstype=ext4,mkfs=1 + # set variables under namespace 'ns'. + # _RET_name=mapper + # _RET_pass=foo + # _RET_fstype=ext4 + # set _RET to the list of variables found + local input="${1}" delim="${2:-,}" ns="${3:-_RET_}" + local oifs="$IFS" tok="" keys="" key="" val="" + + set -f; IFS="$delim"; set -- $input; IFS="$oifs"; set +f; + _RET="" + for tok in "$@"; do + key="${tok%%=*}" + val="${tok#${key}}" + val=${val#=} + safe_string "$key" "0-9a-zA-Z_" || + { debug "$key not a safe variable name"; return 1; } + eval "${ns}${key}"='${val}' || return 1 + keys="${keys} ${ns}${key}" + done + _RET=${keys# } + return +} +get_varval() { eval _RET='${'$1'}'; } +write_kernel_cmdline_cfg() { + local cfg="$1" desc="${2:-kernel cmdline}" + local cmdline="" var="" + read cmdline < /proc/cmdline || return 1 + : > "${cfg}" || return + set -f + { + echo "desc='${desc}'" + for tok in $cmdline; do + for var in $VARIABLES; do + if [ "$tok" = "$var" ]; then + log_warn "kernel param without value '${tok}'"; + continue; + elif [ "${tok}" = "${var}=" ]; then + echo "${var}=''"; + elif [ "${tok#${var}=}" != "${tok}" ]; then + echo "${var}='${tok#${var}=}'" + fi + done + done + } >> "$cfg" + set +f +} + +wait_for_dev() { + local dev="$1" timeout="${2:-0}" + [ -b "$dev" ] && return 0 + [ "$timeout" = "0" ] && return 1 + # wait-for-root writes fstype to stdout, redirect to null + wait-for-root "$dev" "$timeout" >/dev/null +} +crypto_setup() { + local fstype="ext4" pass="" mapname="secure" mkfs="1" dev="" + local timeout=0 + local entropy_sources="/proc/sys/kernel/random/boot_id /proc/sys/kernel/random/uuid /dev/urandom" + local seed="" rootseed="$ROOTMNT/var/lib/urandom/random-seed" + if [ ! -f "$rootseed" -a -f "$ROOTMNT/var/lib/systemd/random-seed" ]; then + rootseed="$ROOTMNT/var/lib/systemd/random-seed" + fi + # Seed the psuedo random number generator with available seeds + for seed in "/.random-seed" "$rootseed"; do + [ -f "${seed}" ] || + { debug "missing rng seed [${seed}]"; continue; } + cat "${seed}" > /dev/urandom || + debug "failed seeding /dev/urandom from $seed" + done + # this does necessary crypto setup and sets _RET + # to the appropriate block device (ie /dev/mapper/secure) + + # mkfs (default is 1): + # 0: never create filesystem + # 1: if pass is given and mount fails, create a new one + # if no pass given, create new + # 2: if pass is given and mount fails, fail + # if no pass given, create new + local options="$1" + parse_string "${options}" || + { log_fail "failed parsing '${options}'"; return 1; } + + fstype=${_RET_fstype:-${fstype}} + pass=${_RET_pass:-${pass}} + mapname=${_RET_mapname:-${mapname}} + mkfs=${_RET_mkfs:-${mkfs}} + dev=${_RET_dev:-${dev}} + timeout=${_RET_timeout:-${timeout}} + + [ -n "$dev" ] || + { log_fail "dev= argument not provided in '${options}'"; return 1; } + + short2dev "$dev" || + { log_fail "failed to convert $dev to a device"; return 1; } + dev="${_RET}" + + debug "fstype=${fstype} pass=${pass} mapname=${mapname}" + debug "mkfs=${mkfs} dev=${dev} timeout=${timeout}" + + wait_for_dev "$dev" "$timeout" || { + log_fail "crypt dev device $dev does not exist after ${timeout}s"; + return 1; + } + + if [ -n "$pass" ]; then + printf "%s" "$pass" | + cryptsetup luksOpen "$dev" "$mapname" --key-file - + if [ $? -eq 0 ]; then + local tdev="/dev/mapper/$mapname" + log_warn "reusing existing luks device at $dev" + wait_for_dev "$tdev" 20 || + { log_fail "$tdev did not appear"; return 1; } + _RET_DEVICE="/dev/mapper/$mapname" + return 0 + fi + if [ "$mkfs" != "1" ]; then + log_fail "luksOpen failed on $dev with mkfs=$mkfs"; + return 1; + fi + log_warn "re-opening $dev failed with mkfs=$mkfs will create new" + else + [ "$mkfs" = "0" ] && + { log_fail "mkfs=0, but no password provided"; return 1; } + entropy_sources="$entropy_sources $dev" + local tmpf="" pass_file="${PERSIST_DIR}/${MYTAG}.passwd" + tmpf=$(mktemp "${PERSIST_DIR}/${MYTAG}.XXXXXX") || + { log_fail "failed creation of password file"; return 1; } + stat -L /dev/* /proc/* /sys/* >"$tmpf" 2>&1 || + { log_warn "could not seed with stat entropy [$entropy_sources]"; } + head -c 4096 $entropy_sources >> "$tmpf" || + { log_fail "failed reading entropy [$entropy_sources]"; return 1; } + pass=$(sha512sum "$tmpf") || + { log_fail "failed generation of password"; return 1; } + pass=${pass%% *} + printf "%s" "${pass}" > "$tmpf" || + { log_fail "failed to record password to '$tmpf'"; return 1; } + mv "$tmpf" "${pass_file}" || + { log_fail "failed rename '$tmpf' to '${pass_file}'"; return 1; } + log_debug "stored password in ${pass_file}" + fi + + log_warn "setting up new luks device at $dev" + # clear backing device + wipefs -a "$dev" || + { log_fail "failed to wipe $dev"; return 1; } + printf "%s" "$pass" | cryptsetup luksFormat "$dev" --key-file - || + { log_fail "luksFormat $dev failed"; return 1; } + printf "%s" "$pass" | + cryptsetup luksOpen "$dev" "$mapname" --key-file - || + { log_fail "luksOpen $dev failed"; return 1; } + mke2fs -t "${fstype}" "/dev/mapper/${mapname}" || { + log_fail "failed to mkfs -t $fstype on map $mapname"; + return 1; + } + + _RET_DEVICE="/dev/mapper/$mapname" + return 0 +} + +dev_setup() { + local options="$1" dev="" timeout=0 path="/" + # options supported: + # dev=device,timeout=X,path=/ + parse_string "${options}" || + { log_fail "failed parsing '${options}'"; return 1; } + + dev=${_RET_dev:-${dev}} + timeout=${_RET_timeout:-${timeout}} + + [ -n "$dev" ] || + { log_fail "dev= argument not provided in '${options}'"; return 1; } + + short2dev "$dev" || + { log_fail "failed to convert $dev to a device"; return 1; } + dev="${_RET}" + + debug "dev=${dev} timeout=${timeout}" + + wait_for_dev "$dev" "$timeout" + _RET_DEVICE="$dev" +} + +clean_path() { + # remove '//' in a path. + local p="$1" tmp="" + while [ "${p#*//}" != "$p" ]; do + tmp=${p#*//} + p="${p%%//*}/${tmp}" + done + _RET="$p" +} + +get_workdir() { + local root_rw="$1" dir_prefix="$2" file="$3" + file=${file%/} + if [ "$file" = "/" -o "$file" = "" ]; then + file="_" + fi + clean_path "${root_rw}/${dir_prefix%/}-workdir/${file}" +} + +gen_fstab() { + # gen_fstab(mp) - generate a fabricated /etc/fstab for mount point $mp + local mp="$1" m_spec="" m_opts="" m_fstype="" + local spec file vfstype opts pass freq + + # just remove any trailing / + [ "$mp" != "/" ] && mp=${mp%/} + while read spec file vfstype opts pass freq; do + [ "$file" = "$mp" ] && { + m_spec="$spec" + m_opts="$opts" + m_fstype="$vfstype" + break + } + done </proc/mounts + [ -z "$m_spec" ] && { + log_warn "did not find root mount point $mp in /proc/mounts" + m_opts="/dev/root" + m_opts="defaults" + m_fstype="auto" + } + + echo "# fabricated by overlayroot, rootfs did not contain /etc/fstab" + echo "${m_spec} / ${m_fstype} ${m_opts} 0 0 " +} + +overlayrootify_fstab() { + # overlayrootify_fstab(input, root_ro, root_rw, dir_prefix, recurse, swap) + # read input fstab file, write an overlayroot version to stdout + # also returns (_RET) a list of directories that will need to be made + local input="$1" root_ro="${2:-/media/root-ro}" + local root_rw="${3:-/media/root-rw}" dir_prefix="${4:-/}" + local recurse=${5:-1} swap=${6:-0} fstype=${7:-overlayfs} + local hash="#" oline="" ospec="" upper="" dirs="" copy_opts="" copy_opt="" + local spec file vfstype opts pass freq line ro_line + local workdir="" use_orig="" relfile="" needs_workdir=false noauto="" + + [ -f "$input" ] || return 1 + + cat <<EOF +# +# This fstab is for overlayroot. The real one can be found at +# ${root_ro}/etc/fstab +# The original entry for '/' and other mounts have been updated to be placed +# under $root_ro. +# To permanently modify this (or any other file), you should change-root into +# a writable view of the underlying filesystem using: +# sudo overlayroot-chroot +# +EOF + + needs_workdir && needs_workdir=true || needs_workdir=false + while read spec file vfstype opts pass freq; do + [ "$file" = "/" ] && noauto="noauto" || noauto="" + line="$spec $file $vfstype $opts $pass $freq" + case ",$opts," in + *,ro,*) ro_opts="$opts";; + *) ro_opts="ro,${opts}";; + esac + ro_line="$spec ${root_ro}$file $vfstype" + ro_line="${ro_line} ${ro_opts}${noauto:+,${noauto}} $pass $freq" + + use_orig="" + if [ "${spec#${hash}}" != "$spec" ]; then + use_orig="comment" + elif [ -z "$freq" ]; then + use_orig="malformed-line" + else + case "$vfstype" in + vfat|fat) use_orig="fs-unsupported";; + proc|sys|tmpfs|dev|udev|debugfs) use_orig="fs-virtual";; + esac + fi + + if [ -n "$use_orig" ]; then + if [ "$use_orig" != "comment" ]; then + echo "$line # $MYTAG:$use_orig" + else + echo "$line" + fi + elif [ "$vfstype" = "swap" ]; then + if [ "$swap" = "0" ]; then + # comment out swap lines + echo "#$MYTAG:swap=${swap}#${line}" + elif [ "${spec#/}" != "${spec}" ] && + [ "${spec#/dev/}" = "${spec}" ]; then + # comment out swap files (spec starts with / and not in /dev) + echo "#$MYTAG:swapfile#${line}" + else + echo "${line}" + fi + else + ospec="${root_ro}${file}" + copy_opts="" + for copy_opt in nobootwait noauto nofail; do + case ",$opts," in + *,${copy_opt},*) + copy_opts="${copy_opts},${copy_opt}";; + esac + done + + clean_path "${root_rw}/${dir_prefix}${file}" + upper="$_RET" + + oline="${ospec} ${file} $fstype " + clean_path "${root_ro}${file}" + oline="${oline}lowerdir=$_RET" + oline="${oline},upperdir=${upper}${copy_opts}" + if [ "$fstype" = "overlayfs" -o "$fstype" = "overlay" ] && + ${needs_workdir}; then + get_workdir "$root_rw" "$dir_prefix" "$file" + workdir="$_RET" + oline="${oline},workdir=$workdir" + dirs="${dirs} $workdir" + fi + oline="${oline} $pass $freq" + + if [ "$recurse" != "0" -o "$file" = "/" ]; then + if [ "$file" = "/" ]; then + # this can confuse systemd (LP: #1723183) + echo "#$ro_line" + else + echo "$ro_line" + fi + echo "$oline" + dirs="${dirs} ${upper}" + else + echo "$line" + fi + fi + done < "$input" + _RET=${dirs# } +} + +short2dev() { + # turn 'LABEL=' or 'UUID=' into a device path + # also support /dev/* and 'vdb' or 'xvda' + local input="$1" oifs="$IFS" dev newdev s + case "$input" in + LABEL=*) + dev="${input#LABEL=}" + case "${dev}" in + */*) dev="$(echo "${dev}" | sed 's,/,\\x2f,g')";; + esac + dev="/dev/disk/by-label/${dev}" + ;; + UUID=*) dev="/dev/disk/by-uuid/${input#UUID=}" ;; + /dev/*) dev="${input}";; + *) dev="/dev/${input}";; + esac + _RET=$dev +} + +get_cfg() { + # get_cfg(device, file, cfg, timeout=0) + # copy the file $cfg off $device to $file, waiting $timeout for + # $device to appear + local dev="$1" file="$2" cfg="${3:-overlayroot.conf}" timeout="${4:-0}" + local cfgdev="" success=0 didmnt=false mp="" pre="get_cfg($dev):" + [ -z "$dev" ] && return 1 + + if [ "$timeout" != "0" ]; then + wait_for_dev "$dev" "$timeout" || + { debug "$pre did not appear in $timeout"; return 1; } + else + udevadm settle + fi + + short2dev "$dev" && cfgdev="$_RET" && [ -b "$cfgdev" ] || + { debug "$pre not present"; return 1; } + + if mp="${TEMP_D}/mp" && mkdir "$mp" && + mount -o ro "$cfgdev" "$mp"; then + if [ -f "$mp/$cfg" ]; then + cp "$mp/$cfg" "$file" && success=1 || + debug "$pre copy failed" + else + debug "$pre '$file' file not found" + fi + umount "$mp" + else + debug "$pre mount failed" + fi + [ -d "$mp" ] || rmdir "$mp" + [ $success -eq 1 ] || return 1 + _RET="$dev/$cfg" +} + +parse_cfg() { + # parse_cfg($file,$desc,$vars) + # this reasonably safely sources the "config" file $file + # and then declares the variables listed to stdout + # + # known issues: + # * sourced file could re-define 'echo' + # * just fails if a value has a ' in it + [ -f "$1" ] || return 0 + tick="'" sh -c ' + __tick=$tick + __file=$1; __desc=$2; + __unset__="__unset__" + shift 2 + __vars="$*" + readonly __tick __file __desc __vars + . "${__file}" + if [ $? -ne 0 ]; then + echo "failed source \"${__file}\" ($__desc)" 1>&2 + return 1 + fi + set -e + echo "desc=${__tick}${__desc}${__tick}" + for var in ${__vars}; do + eval val=\${${var}-${__unset__}} || + { echo "eval of $var failed"; exit 1; } + [ "${val#*${__tick}}" = "${val}" ] || { + echo "variable \"$var\" had single tick in it. fail"; + exit 1; + } + [ "${val}" = "${__unset__}" ] || + echo "$var=${__tick}${val}${__tick}" + done + ' -- "$@" +} + +readcfgd() { + local cfg_d="$1" + # this kind of stinks, each VARIABLE goes into global scope + local or="" or_cfgdisk="" + _RET_desc_oroot="" + _RET_desc_cfgdisk="" + set +f + for f in "${cfg_d}"/*; do + . "$f" || fail "failed reading $f" + [ "$or" != "${overlayroot}" ] && + _RET_desc_oroot="$desc" + [ "${or_cfgdisk}" != "${overlayroot_cfgdisk}" ] && + _RET_desc_cfgdisk="$desc" + or=${overlayroot} + or_cfgdisk=${overlayroot_cfgdisk} + done + set -f +} + +fix_upstart_overlayfs() { + # inotify events on an overlayfs underlay do not propogate through + # a newly created overlay. This causes job creation and deletion issues + # for upstart, which uses inotify on /etc/init. So ensure that the overlay + # explicitly has a /etc/init (LP: #1213925) + local root="$1" + local initctl="$root/sbin/initctl" + local eifile="/etc/init/.overlayfs-upstart-helper" + + [ -e "$initctl" -o -L "$initctl" ] || return 0 + [ -d "$root/etc/init" ] || return 0 + echo "#upstart needs help for overlayfs (LP: #1213925)." \ + > "$root/$eifile" || + { log_fail "failed to write $root/$eifile"; return 1; } + debug "created $eifile under $root (LP: #1213925)" +} + +needs_workdir() { + local uname_r="${UNAME_R}" + if [ -z "$uname_r" ]; then + uname_r=$(uname -r) && UNAME_R="$uname_r" || + { log_warn "failed to read uname!"; return 2; } + fi + # 3.18+ require 'workdir=' option. + case "${uname_r}" in + 2*|3.1[01234567]*|3.[0-9].*) return 1;; + *) return 0;; + esac +} + + +search_fs_driver() { + # search_fs_driver(driver1, driver2...) + # return the first supported filesystem driver in the list. + # if no drivers are provided, search default list. + # assumes that name in /proc/filesystems and module name are the same. + local m="" driver="" tab=' ' + for m in "$@"; do + grep -q "${tab}$m$" /proc/filesystems && driver="$m" && + { debug "/proc/filesystems support for '$m'"; break; } + done + if [ -z "$driver" ]; then + for m in "$@"; do + if modprobe -qb "$m"; then + if grep -q "${tab}$m$" /proc/filesystems; then + debug "loaded module '$m'"; + driver="$m" + break; + else + log_warn "loaded '$m' module but no '$m' in /proc/filesystems" + fi + fi + done + fi + [ -n "$driver" ] || + { debug "Unable to find driver/module. searched: $*"; return 1; } + _RET="$driver" +} + +cfgd="${TEMP_D}/configs" +mkdir -p "${cfgd}" || fail "failed to create tempdir" +trap cleanup EXIT + +# collect the different config locations into a file +# write individual config files in $cfgd that contain +{ +echo "desc='builtin'" +echo "overlayroot=''" +echo "overlayroot_cfgdisk='disabled'" +} > "$cfgd/00-builtin" + +write_kernel_cmdline_cfg "${cfgd}/90-kernel" || + fail "failed to read kernel command line!" + +parse_cfg "/conf/conf.d/overlayroot" "initramfs config" \ + "$VARIABLES" > "${cfgd}/10-initramfs" || + fail "failed parsing initramfs config" + +parse_cfg "${ROOTMNT}/etc/overlayroot.conf" "$ROOT/etc/overlayroot.conf" \ + "$VARIABLES" > "${cfgd}/20-root-config" || + fail "failed parsing root config" + +parse_cfg "${ROOTMNT}/etc/overlayroot.local.conf" \ + "$ROOT/etc/overlayroot.local.conf" \ + "$VARIABLES" > "${cfgd}/30-root-local-config" || + fail "failed parsing root config" + +# now read the trusted configs, to see if overlayroot_cfgdisk is set +readcfgd "$cfgd" || + fail "reading configs failed" +used_desc="${_RET_desc_oroot}" + +[ -n "${_RET_desc_cfgdisk}" ] && + debug "${_RET_desc_cfgdisk} set cfgdisk='${overlayroot_cfgdisk}'" + +# if one of the trusted configs above gave us set the overlayroot_cfgdisk +# variable, then look for such a device and read a config from it. +cfgdisk=0 +if [ "${overlayroot_cfgdisk:-disabled}" != "disabled" ] && + get_cfg "${overlayroot_cfgdisk}" "${TEMP_D}/cfgdisk"; then + desc=${_RET} + parse_cfg "${TEMP_D}/cfgdisk" "${desc}" "$VARIABLES" \ + > "${cfgd}/80-cfgdisk" || + fail "reading config from ${desc} failed" + used_desc="${_RET_desc_oroot}" + + # now read the parsed configs again. + readcfgd "$cfgd" || + fail "reading configs failed" + + [ -n "${_RET_desc_cfgdisk}" ] && + debug "${_RET_desc_cfgdisk} set cfgdisk=${overlayroot_cfgdisk}" + [ -n "${_RET_desc_oroot}" ] && + debug "${_RET_desc_oroot} set overlayroot=${overlayroot}" +fi + +opts="" +cfgmsg="${used_desc:+ (per ${used_desc})}" +case "${overlayroot:-disabled}" in + tmpfs|tmpfs:*) + mode="tmpfs" + opts="${overlayroot#tmpfs}"; + opts=${opts#:} + ;; + /dev/*|device:*) + case "$overlayroot" in + /dev/*) opts="dev=${overlayroot}";; + *) opts="${overlayroot#device:}";; + esac + dev_setup "${opts}" || + fail "failed setup overlay for ${overlayroot} [$opts]${cfgmsg}" + mode="device" + device="$_RET_DEVICE" + ;; + crypt:*) + mode="crypt" + opts=${overlayroot#crypt:} + crypto_setup "${opts}" || + fail "failed setup crypt for ${overlayroot}${cfgmsg}" + device="$_RET_DEVICE" + ;; + disabled) + debug "overlayroot disabled${cfgmsg}" + exit 0;; + *) + fail "invalid value for overlayroot: ${overlayroot}${cfgmsg}" + exit 0;; +esac + +parse_string "$opts" "," _RET_common_ +swap=${_RET_common_swap:-0} +recurse=${_RET_common_recurse:-1} +OVERLAYROOT_DEBUG=${_RET_common_debug:-${OVERLAYROOT_DEBUG}} +dir_prefix=${_RET_common_dir:-"/overlay"} +overlayroot_driver=${_RET_common_driver} + +read cmdline </proc/cmdline +cmdline=" $cmdline " +[ "${cmdline#* ro }" != "$cmdline" ] && cmdline_ro=true || cmdline_ro=false + +if [ "${overlayroot_driver:-auto}" = "auto" ]; then + search_fs_driver overlay overlayfs || + fail "Unable to find a driver. searched: overlay overlayfs" + overlayroot_driver="$_RET" +else + search_fs_driver ${overlayroot_driver} || + fail "Unable to find a driver named '${overlayroot_driver}'" + overlayroot_driver="$_RET" +fi + +debug "swap=$swap recurse=$recurse debug=$OVERLAYROOT_DEBUG dir=$dir_prefix" +debug "device=$device mode=$mode driver=${overlayroot_driver}" + +[ "$swap" = "0" -o "$swap" = "1" ] || + fail "invalid setting for swap: $swap. must be '0' or '1'" +[ "$recurse" = "0" -o "$recurse" = "1" ] || + fail "invalid setting for recurse: $recurse. must be '0' or '1'" + +log_warn "configuring overlayroot with driver=${overlayroot_driver} mode=$mode opts='$opts' per $used_desc" + +# settings based on overlayroot_driver +workdir="" +case "${overlayroot_driver}" in + overlayfs|overlay) + mount_type="${overlayroot_driver}" + mount_opts="-o lowerdir=${root_ro},upperdir=${root_rw}/${dir_prefix}" + if needs_workdir; then + get_workdir "$root_rw" "$dir_prefix" "/" + workdir="$_RET" + mount_opts="${mount_opts},workdir=$workdir" + fi + clean_path "${mount_opts} overlayroot ${ROOTMNT}" + mount_opts="$_RET" + ;; + aufs) + mount_type="aufs" + mount_opts="-o dirs=${root_rw}/${dir_prefix}:${root_ro}=ro aufs-root ${ROOTMNT}" + ;; + *) + log_fail "invalid overlayroot driver: ${overlayroot_driver}" + panic "$MYTAG" + ;; +esac + +# make the mount point on the init root fs ${root_rw} +mkdir -p "${root_rw}" || + fail "failed to create ${root_rw}" + +# make the mount point on the init root fs ${root_ro} +mkdir -p "${root_ro}" || + fail "failed to create ${root_ro}" + +# mount the backing device to $root_rw +if [ "$mode" = "tmpfs" ]; then + # mount a tmpfs using the device name tmpfs-root + mount -t tmpfs tmpfs-root "${root_rw}" || + fail "failed to create tmpfs" +else + # dev or crypto + mount "$device" "${root_rw}" || + fail "failed mount backing device $device" +fi + +mkdir -p "${root_rw}/${dir_prefix}" || + fail "failed to create ${dir_prefix} on ${device}" + +[ -z "$workdir" ] || mkdir -p "$workdir" || + fail "failed to create workdir '$workdir' on ${device}" + +# root is mounted on ${ROOTMNT}, move it to ${ROOT_RO}. +mount --move "${ROOTMNT}" "${root_ro}" || + fail "failed to move root away from ${ROOTMNT} to ${root_ro}" + +# there is nothing left at ${ROOTMNT} now. So for any error we get we should +# either do recovery to restore ${ROOTMNT} for drop to a initramfs shell using +# "panic". Otherwise the boot process is very likely to fail with even more +# errors and leave the system in a wired state. + +# mount virtual fs ${ROOTMNT} with rw-fs ${root_rw} on top or ro-fs ${root_ro}. +debug mount -t "$mount_type" $mount_opts +mount -t "$mount_type" $mount_opts +if [ $? -ne 0 ]; then + log_fail "failed to create new ro/rw layered ${ROOTMNT}" + log_fail "mount command was: mount -t $mount_type $mount_opts" + # do recovery and try restoring the mount for ${ROOTMNT} + mount --move ${root_ro} ${ROOTMNT} + if [ $? -ne 0 ]; then + # thats bad, drop to shell to let the user try fixing this + log_fail "RECOVERY_ERROR: failed to move $root_ro back to ${ROOTMNT}" + panic "$MYTAG" + fi + exit 0 +fi + +# now the real root fs is on ${root_ro} of the init file system, our +# layered root fs is set up at ${ROOTMNT}. So we can write anywhere in +# {ROOTMNT} and the changes will end up in ${root_rw} while ${root_ro} it +# not touched. However ${root_ro} and ${root_rw} are on the initramfs root +# fs, which will be removed an replaced by ${ROOTMNT}. Thus we must move +# ${root_ro} and ${root_rw} to the rootfs visible later, ie. +# ${ROOTMNT}${root_ro} and ${ROOTMNT}${root_ro}. Since the layered ro/rw +# is already up, these changes also end up on ${root_rw} while ${root_ro} +# is not touched. + +# move mount from ${root_ro} to ${ROOTMNT}${root_ro} +mkdir -p "${ROOTMNT}/${root_ro}" +mount --move ${root_ro} "${ROOTMNT}${root_ro}" || + fail "failed to move ${root_ro} to ${ROOTMNT}${root_ro}" + +# move mount from ${root_rw} to ${ROOTMNT}${root_rw} +[ -d ${ROOTMNT}${root_rw} ] || mkdir -p ${ROOTMNT}${root_rw} +mount --move "${root_rw}" "${ROOTMNT}${root_rw}" || + fail "failed to move ${root_rw} to ${ROOTMNT}${root_rw}" + +# technically, everything is set up nicely now. Since ${ROOTMNT} had beend +# mounted read-only on the initfamfs already, ${ROOTMNT}${root_ro} is it, +# too. Now we init process could run - but unfortunately, we may have to +# prepare some more things here. +# Basically, there are two ways to deal with the read-only root fs. If the +# system is made aware of this, things can be simplified a lot. If it is +# not, things need to be done to our best knowledge. +# +# So we assume here, the system does not really know about our read-only +# root fs. +# +# Let's deal with /etc/fstab first. It usually contains an entry for the +# root fs, which is no longer valid now. We have to remove it and add our +# new ${root_ro} entry. +# Remember we are still on the initramfs root fs here, so we have to work +# on ${ROOTMNT}/etc/fstab. The original fstab is +# ${ROOTMNT}${root_ro}/etc/fstab. +source_fstab="$ROOTMNT/${root_ro}/etc/fstab" +if [ ! -f "$source_fstab" ] && [ "$cmdline_ro" = "true" ]; then + debug "rootfs did not contain /etc/fstab, creating" \ + "based on kernel cmdline" + source_fstab="${TEMP_D}/fstab" + gen_fstab "${ROOTMNT}${root_ro}" > "$source_fstab" || + log_fail "gen_fstab failed for $ROOTMNT/$root_ro" +fi + +if [ -f "$source_fstab" ]; then + overlayrootify_fstab "$source_fstab" "$root_ro" \ + "$root_rw" "$dir_prefix" "$recurse" "$swap" "${overlayroot_driver}" \ + > "${ROOTMNT}/etc/fstab" || + log_fail "failed to modify /etc/fstab" +else + debug "rootfs did not contain /etc/fstab." +fi + +# we have to make the directories in ${root_rw} because if they do not +# exist, then the 'upper=' argument to overlayfs will fail. +for d in ${_RET}; do + mkdir -p "${ROOTMNT}/$d" +done + +if [ "${overlayroot_driver}" = "overlayfs" ]; then + fix_upstart_overlayfs "$ROOTMNT" || + log_fail "failed to fix upstart for overlayfs" +fi + +# if / is supposed to be mounted read-only (cmdline with 'ro') +# then mount our overlayfs as read-only just to be more normal +if [ "${cmdline_ro}" = "true" ]; then + mount -o remount,ro "$ROOTMNT" || + log_fail "failed to remount overlayroot read-only" + debug "mounted $ROOTMNT read-only per kernel cmdline" +fi + +msg="configured root with '$overlayroot' using ${overlayroot_driver} per" +msg="$msg ${used_desc}" +log_success "$msg" + +exit 0 +# vi: ts=4 noexpandtab diff --git a/debian/tmp/usr/share/man/man8/overlayroot-chroot.8 b/debian/tmp/usr/share/man/man8/overlayroot-chroot.8 new file mode 100644 index 0000000..57441cd --- /dev/null +++ b/debian/tmp/usr/share/man/man8/overlayroot-chroot.8 @@ -0,0 +1,21 @@ +.TH overlayroot-chroot 8 "20 July 2012" overlayroot-chroot "initramfs-tools-overlayroot" +.SH NAME +\fBoverlayroot-chroot\fP - chroot into the lower filesystem in a writable mode + +.SH SYNOPSIS +\fBoverlayroot-chroot\fP [COMMAND [ARG]...] + +.SH DESCRIPTION +\fBoverlayroot-chroot\fP is a program that sets up bind mounts for \fI/proc\fP, \fI/run\fP, and \fI/sys\fP, remounts the lower directory in an overlayfs with write capabilities and will \fBchroot\fP(8) into it. Upon exit, the bind mounts are unmounted. + +Any [COMMAND [ARG]...] are passed directly through to \fBchroot\fP(8). + +.SH SEE ALSO +.TP +\fBchroot\fP(8) +.PD + +.SH AUTHOR +This manpage and the utility were written by Dustin Kirkland <[email protected]> for Ubuntu systems (but may be used by others). Permission is granted to copy, distribute and/or modify this document and the utility under the terms of the GNU General Public License, Version 3 published by the Free Software Foundation. + +The complete text of the GNU General Public License can be found in \fI/usr/share/common-licenses/GPL\fP on Debian/Ubuntu systems, or on the web at \fIhttp://www.gnu.org/licenses/gpl.txt\fP. |