89 lines
3.2 KiB
Diff
89 lines
3.2 KiB
Diff
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From 14499534ba9694591bbcf8741ba7e3a66d71e2d3 Mon Sep 17 00:00:00 2001
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From: Harald Hoyer <harald@redhat.com>
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Date: Mon, 15 Apr 2013 11:39:32 +0200
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Subject: [PATCH] dmsquash-live: add support for "iso-scan/filename" kernel
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parameter
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now you can write grub entries like
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set isofile="/Fedora-live.iso"
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loopback loop $isofile
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linux loop)/isolinux/vmlinuz iso-scan/filename=$isofile root=live:CDLABEL=Fedora-...
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initrd (loop)/isolinux/initrd0.img
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---
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modules.d/90dmsquash-live/iso-scan.sh | 25 +++++++++++++++++++++++++
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modules.d/90dmsquash-live/module-setup.sh | 2 ++
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modules.d/90dmsquash-live/parse-iso-scan.sh | 14 ++++++++++++++
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3 files changed, 41 insertions(+)
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create mode 100755 modules.d/90dmsquash-live/iso-scan.sh
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create mode 100755 modules.d/90dmsquash-live/parse-iso-scan.sh
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diff --git a/modules.d/90dmsquash-live/iso-scan.sh b/modules.d/90dmsquash-live/iso-scan.sh
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new file mode 100755
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index 0000000..9300d12
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--- /dev/null
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+++ b/modules.d/90dmsquash-live/iso-scan.sh
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@@ -0,0 +1,25 @@
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+#!/bin/sh
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+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
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+# ex: ts=8 sw=4 sts=4 et filetype=sh
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+
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+type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
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+
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+PATH=/usr/sbin:/usr/bin:/sbin:/bin
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+
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+isofile=$1
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+
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+[ -z "$isofile" ] && exit 1
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+
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+mkdir -p "/run/initramfs/isoscan"
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+for dev in /dev/disk/by-uuid/*; do
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+ mount -t auto -o ro "$dev" "/run/initramfs/isoscan" || continue
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+ if [ -f "/run/initramfs/isoscan/$isofile" ]; then
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+ losetup -f "/run/initramfs/isoscan/$isofile"
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+ exit 0
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+ else
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+ umount "/run/initramfs/isoscan"
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+ fi
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+done
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+
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+rmdir "/run/initramfs/isoscan"
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+exit 1
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diff --git a/modules.d/90dmsquash-live/module-setup.sh b/modules.d/90dmsquash-live/module-setup.sh
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index 76358da..5b283d1 100755
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--- a/modules.d/90dmsquash-live/module-setup.sh
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+++ b/modules.d/90dmsquash-live/module-setup.sh
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@@ -23,10 +23,12 @@ install() {
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dracut_install umount dmsetup blkid dd losetup grep blockdev
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dracut_install -o checkisomd5
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inst_hook cmdline 30 "$moddir/parse-dmsquash-live.sh"
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+ inst_hook cmdline 31 "$moddir/parse-iso-scan.sh"
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inst_hook pre-udev 30 "$moddir/dmsquash-live-genrules.sh"
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inst_hook pre-udev 30 "$moddir/dmsquash-liveiso-genrules.sh"
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inst_hook pre-pivot 20 "$moddir/apply-live-updates.sh"
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inst_script "$moddir/dmsquash-live-root.sh" "/sbin/dmsquash-live-root"
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+ inst_script "$moddir/iso-scan.sh" "/sbin/iso-scan"
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# should probably just be generally included
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inst_rules 60-cdrom_id.rules
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inst_simple "$moddir/checkisomd5@.service" "/etc/systemd/system/checkisomd5@.service"
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diff --git a/modules.d/90dmsquash-live/parse-iso-scan.sh b/modules.d/90dmsquash-live/parse-iso-scan.sh
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new file mode 100755
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index 0000000..be071fd
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--- /dev/null
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+++ b/modules.d/90dmsquash-live/parse-iso-scan.sh
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@@ -0,0 +1,14 @@
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+#!/bin/sh
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+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
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+# ex: ts=8 sw=4 sts=4 et filetype=sh
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+# live images are specified with
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+# root=live:backingdev
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+
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+isofile=$(getarg iso-scan/filename)
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+
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+if [ -n "$isofile" ]; then
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+ {
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+ printf 'KERNEL=="loop0", RUN+="/sbin/initqueue --settled --onetime --unique /sbin/iso-scan %s"\n' \
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+ "'${isofile}'"
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+ } >> /etc/udev/rules.d/99-isofile-mount.rules
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+fi
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