[archiso] Use dm-snapshot instead of aufs2 (A.K.A. "The Big Commit")

* Use device mapper + snapshot module, instead union layer filesystem.
  * A block-level approach vs vfs-level.
  * No more unofficial (Linux) things.
  * More memory is needed.
* Refactor mkarchiso.
* Refactor hooks/archiso.
* Fix install/archiso_pxe_nbd
  (due recent change in mkinitcpio-0.6.15 on checked_modules()/all_modules())
  [Thanks Dave for the improved workaround]
* New configs/releng to build official images.
  * Works with a Bash script instead of Makefile.
    (better control and easy to maintain)
* Remove configs/syslinux-iso.
* Remove archiso2dual script. Integrate functionality in configs/releng.
* New configs/baseline to build the most basic live medium or use as template.
* New README (draft). [Thanks Dieter for fixing english grammar]

Signed-off-by: Gerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar>

12 files changed, 219 insertions, 0 deletions

diff --git a/configs/releng/root-image/etc/arch-release b/configs/releng/root-image/etc/arch-release
new file mode 100644
index 0000000..153f8b2
--- /dev/null
+++ b/configs/releng/root-image/etc/arch-release
@@ -0,0 +1 @@
+Arch Linux Live ISO
diff --git a/configs/releng/root-image/etc/archiso/functions b/configs/releng/root-image/etc/archiso/functions
new file mode 100644
index 0000000..9fffdcb
--- /dev/null
+++ b/configs/releng/root-image/etc/archiso/functions
@@ -0,0 +1,20 @@
+# vim: set ft=sh:
+
+# kernel_cmdline <param> <default>
+# Looks for a parameter on the kernel's boot-time command line.
+#
+# returns: 0 if param was found. Also prints its value if it was a K=V param.
+#          1 if it was not. Also prints value passed as <default>
+#
+kernel_cmdline ()
+{
+    for param in $(/bin/cat /proc/cmdline); do
+        case "${param}" in
+            $1=*) echo "${param##*=}"; return 0 ;;
+            $1) return 0 ;;
+            *) continue ;;
+        esac
+    done
+    [ -n "${2}" ] && echo "${2}"
+    return 1
+}
diff --git a/configs/releng/root-image/etc/fstab b/configs/releng/root-image/etc/fstab
new file mode 100644
index 0000000..0df0cba
--- /dev/null
+++ b/configs/releng/root-image/etc/fstab
@@ -0,0 +1,5 @@
+#
+# /etc/fstab: static file system information
+#
+# <file system>        <dir>         <type>    <options>          <dump> <pass>
+/dev/mapper/root-image /             auto      defaults           0      0
diff --git a/configs/releng/root-image/etc/hosts b/configs/releng/root-image/etc/hosts
new file mode 100644
index 0000000..e474be0
--- /dev/null
+++ b/configs/releng/root-image/etc/hosts
@@ -0,0 +1,9 @@
+#
+# /etc/hosts: static lookup table for host names
+#
+
+#<ip-address>	<hostname.domain.org>	<hostname>
+127.0.0.1		localhost.localdomain	localhost	archiso
+::1				localhost.localdomain	localhost	archiso
+
+# End of file
diff --git a/configs/releng/root-image/etc/inittab b/configs/releng/root-image/etc/inittab
new file mode 100644
index 0000000..2bbc494
--- /dev/null
+++ b/configs/releng/root-image/etc/inittab
@@ -0,0 +1,48 @@
+#
+# /etc/inittab
+#
+
+#  Runlevels:
+#    0    Halt
+#    1(S)	Single-user
+#    2    Not used
+#    3    Multi-user
+#    4    Not used
+#    5    X11
+#    6    Reboot
+
+## Only one of the following two lines can be uncommented!
+# Boot to console
+id:3:initdefault:
+# Boot to X11
+#id:5:initdefault:
+
+rc::sysinit:/etc/rc.sysinit
+rs:S1:wait:/etc/rc.single
+rm:2345:wait:/etc/rc.multi
+rh:06:wait:/etc/rc.shutdown
+su:S:wait:/sbin/sulogin -p
+
+# -8 options fixes umlauts problem on login
+c1:2345:respawn:/sbin/agetty -8 -s -n -l /usr/bin/autologin 38400 tty1 linux
+c2:2345:respawn:/sbin/agetty -8 -s 38400 tty2 linux
+c3:2345:respawn:/sbin/agetty -8 -s 38400 tty3 linux
+c4:2345:respawn:/sbin/agetty -8 -s 38400 tty4 linux
+c5:2345:respawn:/sbin/agetty -8 -s 38400 tty5 linux
+c6:2345:respawn:/sbin/agetty -8 -s 38400 tty6 linux
+
+# Serial Virtual Console for KVM and others VMs
+#s0:2345:respawn:/sbin/agetty -8 -s 9600 ttyS0 linux
+
+# Hypervisor Virtual Console for Xen and KVM
+#h0:2345:respawn:/sbin/agetty -8 -s 38400 hvc0 linux
+
+ca::ctrlaltdel:/sbin/shutdown -t3 -r now
+
+# Example lines for starting a login manager
+x:5:respawn:/usr/bin/xdm -nodaemon
+#x:5:respawn:/usr/sbin/gdm -nodaemon
+#x:5:respawn:/usr/bin/kdm -nodaemon
+#x:5:respawn:/usr/bin/slim >/dev/null 2>&1
+
+# End of file
diff --git a/configs/releng/root-image/etc/issue b/configs/releng/root-image/etc/issue
new file mode 100644
index 0000000..ce82e88
--- /dev/null
+++ b/configs/releng/root-image/etc/issue
@@ -0,0 +1,5 @@
+
+Arch Linux Live ISO (\l)
+\s-\r \m.
+Default logins "root" and "arch" have no password.
+To begin installation, login as root.
diff --git a/configs/releng/root-image/etc/motd b/configs/releng/root-image/etc/motd
new file mode 100644
index 0000000..ddd9fbc
--- /dev/null
+++ b/configs/releng/root-image/etc/motd
@@ -0,0 +1,16 @@
+**************************************************************
+* To begin installation, run /arch/setup                     *
+* You can find documentation at                              *
+*  /usr/share/aif/docs/official_installation_guide_en        *
+*                                                            *
+* i18n: Use the 'km' utility to change your keyboard layout  *
+*       and console font.                                    *
+*                                                            *
+* If you encounter issues and want to report them or         *
+* seek help, run /arch/report-issues                         *
+*                                                            *
+* If you are looking to install Arch on something more       *
+* exotic, such as your kerosene-powered cheese grater,       *
+* please consult http://wiki.archlinux.org.                  *
+*                                                            *
+**************************************************************
diff --git a/configs/releng/root-image/etc/pam.d/su b/configs/releng/root-image/etc/pam.d/su
new file mode 100644
index 0000000..a291042
--- /dev/null
+++ b/configs/releng/root-image/etc/pam.d/su
@@ -0,0 +1,6 @@
+#%PAM-1.0
+auth		sufficient	pam_rootok.so
+auth		sufficient	pam_wheel.so trust use_uid
+auth		required	pam_unix.so
+account		required	pam_unix.so
+session		required	pam_unix.so
diff --git a/configs/releng/root-image/etc/rc.conf b/configs/releng/root-image/etc/rc.conf
new file mode 100644
index 0000000..92236a2
--- /dev/null
+++ b/configs/releng/root-image/etc/rc.conf
@@ -0,0 +1,35 @@
+#
+# /etc/rc.conf - Main Configuration for Arch Linux
+
+. /etc/archiso/functions
+
+LOCALE_DEFAULT="en_US.UTF-8"
+DAEMON_LOCALE_DEFAULT="no"
+CLOCK_DEFAULT="UTC"
+TIMEZONE_DEFAULT="Canada/Pacific"
+KEYMAP_DEFAULT="us"
+CONSOLEFONT_DEFAULT=
+CONSOLEMAP_DEFAULT=
+USECOLOR_DEFAULT="yes"
+VERBOSE_DEFAULT="3"
+
+LOCALE="$(kernel_cmdline locale ${LOCALE_DEFAULT})"
+DAEMON_LOCALE="$(kernel_cmdline daemon_locale ${DAEMON_LOCALE_DEFAULT})"
+HARDWARECLOCK="$(kernel_cmdline clock ${CLOCK_DEFAULT})"
+TIMEZONE="$(kernel_cmdline timezone ${TIMEZONE_DEFAULT})"
+KEYMAP="$(kernel_cmdline keymap ${KEYMAP_DEFAULT})"
+CONSOLEFONT="$(kernel_cmdline consolefont ${CONSOLEFONT_DEFAULT})"
+CONSOLEMAP="$(kernel_cmdline consolemap ${CONSOLEMAP_DEFAULT})"
+USECOLOR="$(kernel_cmdline usecolor ${USECOLOR_DEFAULT})"
+VERBOSE="$(kernel_cmdline verbose ${VERBOSE_DEFAULT})"
+
+MODULES=()
+
+UDEV_TIMEOUT=30
+USEDMRAID="no"
+USEBTRFS="no"
+USELVM="no"
+
+HOSTNAME="archiso"
+
+DAEMONS=(hwclock syslog-ng archiso)
diff --git a/configs/releng/root-image/etc/rc.d/archiso b/configs/releng/root-image/etc/rc.d/archiso
new file mode 100755
index 0000000..1429516
--- /dev/null
+++ b/configs/releng/root-image/etc/rc.d/archiso
@@ -0,0 +1,48 @@
+# vim: set ft=sh:
+. /etc/rc.conf
+. /etc/rc.d/functions
+
+do_makeuser ()
+{
+    stat_busy "Making the default user arch"
+    addgroups="audio,disk,optical,wheel"
+    useradd -m -p "" -g users -G $addgroups arch
+    stat_done
+}
+
+do_locale_gen ()
+{
+    stat_busy "Generating locales..."
+    sed -i "s/#\(${LOCALE/[@.]*}\)/\1/" /etc/locale.gen
+    /usr/sbin/locale-gen > /dev/null
+    stat_done
+}
+
+# If an alternate console was specified on the kernel command line,
+# start agetty on it too.
+do_special_console()
+{
+    cmdline_console="$(kernel_cmdline console)"
+    [ $? -ne 0 ] && return
+
+    dev="${cmdline_console%%,*}"
+    args="${cmdline_console##*,}"
+    baud="${args%%[neo]*}" && baud="${baud:-"9600"}"
+    [ "x${args}" != "x${args%%r}" ] && rts="-h"
+
+
+    stat_busy "Starting agetty on console: ${cmdline_console}"
+    echo "${dev}" >> /etc/securetty
+    echo "z0:2345:respawn:/sbin/agetty ${rts} ${baud} ${dev} linux" >> /etc/inittab
+    /sbin/telinit q
+    stat_done
+}
+
+case "$1" in
+  start)
+    do_locale_gen
+    do_makeuser
+    do_special_console
+    ;;
+esac
+exit 0
diff --git a/configs/releng/root-image/etc/rc.d/functions.d/automated_script b/configs/releng/root-image/etc/rc.d/functions.d/automated_script
new file mode 100644
index 0000000..edb8ea3
--- /dev/null
+++ b/configs/releng/root-image/etc/rc.d/functions.d/automated_script
@@ -0,0 +1,25 @@
+. /etc/archiso/functions
+
+automated_script ()
+{
+    script="$(kernel_cmdline script)"
+    if [[ -n "$script" ]]; then
+        stat_busy "Configuring $script"
+        if [[ "$script" =~ ^http:// || "$script" =~ ^ftp:// ]]; then
+            wget "$script" -q -O /tmp/startup_script >/dev/null
+            rt=$?
+        else
+            cp "$script" /tmp/startup_script
+            rt=$?
+        fi
+        if [ $rt -eq 0 ]; then
+            chmod +x /tmp/startup_script
+            echo -e '\nif [ $(tty) = "/dev/tty1" ]; then\n    /tmp/startup_script\nfi\n' >> /root/.bash_profile
+            stat_done
+        else
+            stat_fail
+        fi
+    fi
+}
+
+add_hook multi_end automated_script
diff --git a/configs/releng/root-image/etc/sudoers.d/g_wheel b/configs/releng/root-image/etc/sudoers.d/g_wheel
new file mode 100644
index 0000000..8c45359
--- /dev/null
+++ b/configs/releng/root-image/etc/sudoers.d/g_wheel
@@ -0,0 +1 @@
+%wheel  ALL=(ALL) NOPASSWD: ALL