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grub2/grub2-s390x-04-grub2-install.patch

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From: Raymund Will <rw@suse.com>
Subject: Allow s390x-emu to be "installed"
References: fate#314213, bnc#866867, bnc#868909, bnc#874155, bnc#876743,
bnc#879136, bnc#889562, bnc#889572
Patch-Mainline: no
V2:
* try harder to find root filesystem (incl. subvol-handling).
* read /etc/sysconfig/bootloader as final fallback.
V3:
* refresh initrd by default, prefer running kernel and
re-zipl despite minor issues. [bnc#866867, fate#314213]
V4:
* append 'quiet splash=silent' for 'initgrub'-boot.
* properly check for dracut script during 'grub2-install'.
* move 'zipl2grub.pl' to '/usr/sbin/grub2-zipl-setup'.
V5:
* actually call 'grub2-zipl-setup' from 'grub2-install'.
* handle 'GRUB{,_EMU}_CONMODE'. [bnc#868909]
V6:
* grub2-zipl-setup: support 'xz' initrd compression. [bnc#874155]
V7:
* dracut-grub2.sh: use 'showconsole' to determine console device. [bnc#876743]
* dracut-grub2.sh: and fall back to '/dev/console' (instead of 'tty1').
* dracut-grub2.sh: introduce "debug()" helper function.
V8:
* grub2-zipl-setup: replace poor choice in '/sysroot/sys' check. [bnc#879136]
* grub2-zipl-setup: fix typo in '/sysroot/proc' check.
V9:
* grub2-zipl-setup: honor GRUB_DISABLE_LINUX_UUID. [bnc#885854]
V10:
* grub2-zipl-setup: fix stupid typo in previous fix. [bnc#889562, bnc#889572]
V11:
* grub2-zipl-setup: disable 'grub-mkrelpath' acrobatics. [bnc#889572]
V12:
* dracut-grub2.sh: try to mount '/.snapshots' if missing. [bnc#892014]
* dracut-grub2.sh: use '/dev/shm' for debug output, so it's accessible
from grub2-emu's shell.
V13:
* grub2-zipl-setup: make initrd mount '/boot', if needed. [bnc#873951, bnc#892088]
* dracut-grub2.sh: provide /boot from above to grub2-emu in chroot.
V14:
* grub2-zipl-setup: actually remove obsolete kernel/initrds. [bnc#892810]
V15:
* zipl2grub.conf: turn of zipl-prompt and quiescent plymouth. [bsc#898198]
V16:
* dracut-grub2.sh: force read-only '/usr' for kexec. [bsc#932951]
V17:
* grub2-zipl-setup: remove arybase dependency by not referencing $[. [bsc#1055280]
V18:
* dracut-zipl-refresh.sh.in: initial submission. [bsc#1127293]
* dracut-grub2.sh: try to call zipl-refresh on failed kexec and drop
to an emergency shell otherwise
V19:
* dracut-grub2.sh: use 'grep -P' instead of '-E'. [bsc#1136970]
V20:
* dracut-grub2.sh: add support for '/boot/writable'. [bsc#1190395]
---
Makefile.util.def | 46 +++
configure.ac | 9
grub-core/Makefile.core.def | 7
grub-core/osdep/basic/no_platform.c | 7
grub-core/osdep/unix/platform.c | 11
grub-core/osdep/windows/platform.c | 6
include/grub/util/install.h | 4
util/grub-install-common.c | 1
util/grub-install.c | 43 +++
util/s390x/dracut-grub2.sh.in | 141 +++++++++++
util/s390x/dracut-module-setup.sh.in | 19 +
util/s390x/dracut-zipl-refresh.sh.in | 183 ++++++++++++++
util/s390x/zipl2grub.conf.in | 26 ++
util/s390x/zipl2grub.pl.in | 423 +++++++++++++++++++++++++++++++++
14 files changed, 923 insertions(+), 3 deletions(-)
--- a/Makefile.util.def
+++ b/Makefile.util.def
@@ -377,6 +377,7 @@
ldadd = grub-core/lib/gnulib/libgnu.a;
ldadd = '$(LIBINTL) $(LIBDEVMAPPER) $(LIBUTIL) $(LIBZFS) $(LIBNVPAIR) $(LIBGEOM)';
cppflags = '-DGRUB_SETUP_FUNC=grub_util_bios_setup';
+ emu_condition = COND_NOT_s390x;
};
program = {
@@ -397,6 +398,7 @@
ldadd = grub-core/lib/gnulib/libgnu.a;
ldadd = '$(LIBINTL) $(LIBDEVMAPPER) $(LIBUTIL) $(LIBZFS) $(LIBNVPAIR) $(LIBGEOM)';
cppflags = '-DGRUB_SETUP_FUNC=grub_util_sparc_setup';
+ emu_condition = COND_NOT_s390x;
};
program = {
@@ -412,6 +414,7 @@
ldadd = libgrubkern.a;
ldadd = grub-core/lib/gnulib/libgnu.a;
ldadd = '$(LIBINTL) $(LIBDEVMAPPER) $(LIBUTIL) $(LIBZFS) $(LIBNVPAIR) $(LIBGEOM)';
+ emu_condition = COND_NOT_s390x;
};
program = {
@@ -442,6 +445,7 @@
ldadd = libgrubkern.a;
ldadd = grub-core/lib/gnulib/libgnu.a;
ldadd = '$(LIBINTL) $(LIBDEVMAPPER) $(LIBUTIL) $(LIBZFS) $(LIBNVPAIR) $(LIBGEOM)';
+ emu_condition = COND_NOT_s390x;
};
data = {
@@ -665,6 +669,7 @@
common = grub-core/disk/host.c;
common = util/resolve.c;
+ emu_condition = COND_s390x;
common = grub-core/kern/emu/argp_common.c;
common = grub-core/osdep/init.c;
@@ -734,6 +739,46 @@
};
script = {
+ name = grub-zipl-setup;
+ installdir = sbin;
+ common = util/s390x/zipl2grub.pl.in;
+ enable = emu;
+ emu_condition = COND_s390x;
+};
+
+data = {
+ name = zipl2grub.conf.in;
+ common = util/s390x/zipl2grub.conf.in;
+ installdir = grubconf;
+ enable = emu;
+ emu_condition = COND_s390x;
+};
+
+script = {
+ name = dracut-module-setup.sh;
+ common = util/s390x/dracut-module-setup.sh.in;
+ enable = emu;
+ emu_condition = COND_s390x;
+ installdir = platform;
+};
+
+script = {
+ name = dracut-grub.sh;
+ common = util/s390x/dracut-grub2.sh.in;
+ enable = emu;
+ emu_condition = COND_s390x;
+ installdir = platform;
+};
+
+script = {
+ name = dracut-zipl-refresh;
+ common = util/s390x/dracut-zipl-refresh.sh.in;
+ enable = emu;
+ emu_condition = COND_s390x;
+ installdir = platform;
+};
+
+script = {
name = grub-mkconfig_lib;
common = util/grub-mkconfig_lib.in;
installdir = noinst;
@@ -1381,6 +1426,7 @@
ldadd = libgrubkern.a;
ldadd = grub-core/lib/gnulib/libgnu.a;
ldadd = '$(LIBINTL) $(LIBDEVMAPPER) $(LIBZFS) $(LIBNVPAIR) $(LIBGEOM)';
+ emu_condition = COND_NOT_s390x;
};
program = {
--- a/configure.ac
+++ b/configure.ac
@@ -211,9 +211,9 @@
esac
fi
-if test x"$target_cpu-$platform" = xsparc64-emu ; then
- target_m64=1
-fi
+case x"$target_cpu-$platform" in
+ xsparc64-emu | xs390x-emu) target_m64=1 ;;
+esac
case "$target_os" in
windows* | mingw32*) target_os=cygwin ;;
@@ -2158,6 +2158,9 @@
AM_CONDITIONAL([COND_sparc64_emu], [test x$target_cpu = xsparc64 -a x$platform = xemu])
AM_CONDITIONAL([COND_x86_64_efi], [test x$target_cpu = xx86_64 -a x$platform = xefi])
AM_CONDITIONAL([COND_x86_64_xen], [test x$target_cpu = xx86_64 -a x$platform = xxen])
+AM_CONDITIONAL([COND_s390x], [test x$target_cpu = xs390x ])
+AM_CONDITIONAL([COND_NOT_s390x], [test x$target_cpu != xs390x ])
+AM_CONDITIONAL([COND_s390x_emu], [test x$target_cpu = xs390x -a x$platform = xemu])
AM_CONDITIONAL([COND_HOST_HURD], [test x$host_kernel = xhurd])
AM_CONDITIONAL([COND_HOST_LINUX], [test x$host_kernel = xlinux])
--- a/grub-core/Makefile.core.def
+++ b/grub-core/Makefile.core.def
@@ -1186,6 +1186,7 @@
module = {
name = videotest;
common = commands/videotest.c;
+ emu_condition = COND_NOT_s390x;
};
module = {
@@ -1640,6 +1641,7 @@
common = gfxmenu/gui_progress_bar.c;
common = gfxmenu/gui_util.c;
common = gfxmenu/gui_string_util.c;
+ emu_condition = COND_NOT_s390x;
};
module = {
@@ -2078,11 +2080,13 @@
name = gfxterm;
common = term/gfxterm.c;
enable = videomodules;
+ emu_condition = COND_NOT_s390x;
};
module = {
name = gfxterm_background;
common = term/gfxterm_background.c;
+ emu_condition = COND_NOT_s390x;
};
module = {
@@ -2205,6 +2209,7 @@
enable = x86_64_efi;
enable = emu;
enable = xen;
+ emu_condition = COND_NOT_s390x;
};
module = {
@@ -2251,6 +2256,7 @@
module = {
name = gfxterm_menu;
common = tests/gfxterm_menu.c;
+ emu_condition = COND_NOT_s390x;
};
module = {
@@ -2412,6 +2418,7 @@
enable = x86_64_efi;
enable = emu;
enable = xen;
+ emu_condition = COND_NOT_s390x;
};
module = {
--- a/grub-core/osdep/basic/no_platform.c
+++ b/grub-core/osdep/basic/no_platform.c
@@ -44,3 +44,10 @@
{
grub_util_error ("%s", _("no SGI routines are available for your platform"));
}
+
+void
+grub_install_zipl (const char *d, int i, int f)
+{
+ grub_util_error ("%s", _("no zIPL routines are available for your platform"));
+}
+
--- a/grub-core/osdep/unix/platform.c
+++ b/grub-core/osdep/unix/platform.c
@@ -239,3 +239,14 @@
imgfile, destname, NULL });
grub_util_warn ("%s", _("You will have to set `SystemPartition' and `OSLoader' manually."));
}
+
+void
+grub_install_zipl (const char *dest, int install, int force)
+{
+ if (grub_util_exec ((const char * []){ PACKAGE"-zipl-setup",
+ verbosity ? "-v" : "",
+ install ? "" : "--debug",
+ !force ? "" : "--force",
+ "-z", dest, NULL }))
+ grub_util_error (_("`%s' failed.\n"), PACKAGE"-zipl-setup");
+}
--- a/grub-core/osdep/windows/platform.c
+++ b/grub-core/osdep/windows/platform.c
@@ -434,3 +434,9 @@
{
grub_util_error ("%s", _("no SGI routines are available for your platform"));
}
+
+void
+grub_install_zipl (const char *d, int i, int f)
+{
+ grub_util_error ("%s", _("no zIPL routines are available for your platform"));
+}
--- a/include/grub/util/install.h
+++ b/include/grub/util/install.h
@@ -110,6 +110,7 @@
GRUB_INSTALL_PLATFORM_LOONGARCH64_EFI,
GRUB_INSTALL_PLATFORM_RISCV32_EFI,
GRUB_INSTALL_PLATFORM_RISCV64_EFI,
+ GRUB_INSTALL_PLATFORM_S390X_EMU,
GRUB_INSTALL_PLATFORM_MAX
};
@@ -237,6 +238,9 @@
grub_install_sgi_setup (const char *install_device,
const char *imgfile, const char *destname);
+void
+grub_install_zipl (const char *d, int i, int f);
+
int
grub_install_compress_gzip (const char *src, const char *dest);
int
--- a/util/grub-install-common.c
+++ b/util/grub-install-common.c
@@ -924,6 +924,7 @@
[GRUB_INSTALL_PLATFORM_LOONGARCH64_EFI] = { "loongarch64", "efi" },
[GRUB_INSTALL_PLATFORM_RISCV32_EFI] = { "riscv32", "efi" },
[GRUB_INSTALL_PLATFORM_RISCV64_EFI] = { "riscv64", "efi" },
+ [GRUB_INSTALL_PLATFORM_S390X_EMU] = { "s390x", "emu" },
};
char *
--- a/util/grub-install.c
+++ b/util/grub-install.c
@@ -66,6 +66,7 @@
static char *disk_module = NULL;
static char *efidir = NULL;
static char *macppcdir = NULL;
+static char *zipldir = NULL;
static int force = 0;
static int have_abstractions = 0;
static int have_cryptodisk = 0;
@@ -106,6 +107,7 @@
OPTION_NO_BOOTSECTOR,
OPTION_NO_RS_CODES,
OPTION_MACPPC_DIRECTORY,
+ OPTION_ZIPL_DIRECTORY,
OPTION_LABEL_FONT,
OPTION_LABEL_COLOR,
OPTION_LABEL_BGCOLOR,
@@ -181,6 +183,11 @@
efidir = xstrdup (arg);
return 0;
+ case OPTION_ZIPL_DIRECTORY:
+ free (zipldir);
+ zipldir = xstrdup (arg);
+ return 0;
+
case OPTION_DISK_MODULE:
free (disk_module);
disk_module = xstrdup (arg);
@@ -298,6 +305,8 @@
N_("use DIR as the EFI System Partition root."), 2},
{"macppc-directory", OPTION_MACPPC_DIRECTORY, N_("DIR"), 0,
N_("use DIR for PPC MAC install."), 2},
+ {"zipl-directory", OPTION_ZIPL_DIRECTORY, N_("DIR"), 0,
+ N_("use DIR as the zIPL Boot Partition root."), 2},
{"label-font", OPTION_LABEL_FONT, N_("FILE"), 0, N_("use FILE as font for label"), 2},
{"label-color", OPTION_LABEL_COLOR, N_("COLOR"), 0, N_("use COLOR for label"), 2},
{"label-bgcolor", OPTION_LABEL_BGCOLOR, N_("COLOR"), 0, N_("use COLOR for label background"), 2},
@@ -334,6 +343,8 @@
#else
return NULL;
#endif
+#elif defined (__s390x__)
+ return "s390x-emu";
#else
return NULL;
#endif
@@ -510,6 +521,8 @@
case GRUB_INSTALL_PLATFORM_I386_XEN:
case GRUB_INSTALL_PLATFORM_X86_64_XEN:
case GRUB_INSTALL_PLATFORM_I386_XEN_PVH:
+
+ case GRUB_INSTALL_PLATFORM_S390X_EMU:
return 0;
/* pacify warning. */
@@ -939,6 +952,7 @@
case GRUB_INSTALL_PLATFORM_I386_XEN:
case GRUB_INSTALL_PLATFORM_X86_64_XEN:
case GRUB_INSTALL_PLATFORM_I386_XEN_PVH:
+ case GRUB_INSTALL_PLATFORM_S390X_EMU:
break;
case GRUB_INSTALL_PLATFORM_I386_QEMU:
@@ -990,6 +1004,7 @@
case GRUB_INSTALL_PLATFORM_I386_XEN:
case GRUB_INSTALL_PLATFORM_X86_64_XEN:
case GRUB_INSTALL_PLATFORM_I386_XEN_PVH:
+ case GRUB_INSTALL_PLATFORM_S390X_EMU:
free (install_device);
install_device = NULL;
break;
@@ -1291,6 +1306,20 @@
}
}
+ if (platform == GRUB_INSTALL_PLATFORM_S390X_EMU)
+ {
+ if (!zipldir)
+ {
+ char *d = grub_util_path_concat (2, bootdir, "zipl");
+ if (!grub_util_is_directory (d))
+ {
+ free (d);
+ grub_util_error ("%s", _("cannot find zIPL directory"));
+ }
+ zipldir = d;
+ }
+ }
+
size_t ndev = 0;
/* Write device to a variable so we don't have to traverse /dev every time. */
@@ -1543,6 +1572,7 @@
case GRUB_INSTALL_PLATFORM_I386_XEN:
case GRUB_INSTALL_PLATFORM_X86_64_XEN:
case GRUB_INSTALL_PLATFORM_I386_XEN_PVH:
+ case GRUB_INSTALL_PLATFORM_S390X_EMU:
grub_util_warn ("%s", _("no hints available for your platform. Expect reduced performance"));
break;
/* pacify warning. */
@@ -1661,6 +1691,10 @@
strcpy (mkimage_target, "sparc64-ieee1275-raw");
core_name = "core.img";
break;
+ case GRUB_INSTALL_PLATFORM_S390X_EMU:
+ strcpy (mkimage_target, "grub2-emu");
+ core_name = mkimage_target;
+ break;
/* pacify warning. */
case GRUB_INSTALL_PLATFORM_MAX:
break;
@@ -1676,6 +1710,7 @@
core_name);
char *prefix = xasprintf ("%s%s", prefix_drive ? : "",
relative_grubdir);
+ if (core_name != mkimage_target)
grub_install_make_image_wrap (/* source dir */ grub_install_source_directory,
/*prefix */ prefix,
/* output */ imgfile,
@@ -1714,6 +1749,10 @@
/* image target */ mkimage_target, 0);
}
break;
+
+ case GRUB_INSTALL_PLATFORM_S390X_EMU:
+ break;
+
case GRUB_INSTALL_PLATFORM_ARM_EFI:
case GRUB_INSTALL_PLATFORM_ARM64_EFI:
case GRUB_INSTALL_PLATFORM_LOONGARCH64_EFI:
@@ -2013,6 +2052,10 @@
}
break;
+ case GRUB_INSTALL_PLATFORM_S390X_EMU:
+ grub_install_zipl (zipldir, install_bootsector, force);
+ break;
+
case GRUB_INSTALL_PLATFORM_MIPSEL_LOONGSON:
case GRUB_INSTALL_PLATFORM_MIPSEL_QEMU_MIPS:
case GRUB_INSTALL_PLATFORM_MIPS_QEMU_MIPS:
--- /dev/null
+++ b/util/s390x/dracut-grub2.sh.in
@@ -0,0 +1,141 @@
+#!/bin/sh
+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
+# ex: ts=8 sw=4 sts=4 et filetype=sh
+#getargbool() { true; }
+
+if getargbool 0 initgrub && [ ! -e /grub2skip ] || [ -e /grub2force ]; then
+ #type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
+ checkro() {
+ local tgt="$1"
+ local dev mp fs opts dc
+ local rofs=true
+ while read dev mp fs opts dc; do
+ [ "$mp" = "$tgt" ] || continue
+ case ",$opts," in
+ (*,ro,*) rofs=true;;
+ (*) rofs=false;;
+ esac
+ done < /proc/mounts
+ echo $rofs
+ }
+ checkd() {
+ [ -d $1 ] && echo true || echo false
+ }
+ checke() {
+ [ -e $1 ] && echo true || echo false
+ }
+ checksubvol() {
+ local tgt="$1"
+ local tst="$2"
+ if [ -n "$tst" -a -e "/sysroot$tgt/$tst" ]; then
+ echo true
+ elif grep -qP '^[^#\s]+\s+'"$tgt"'\s+' /sysroot/etc/fstab; then
+ echo false
+ else
+ echo true
+ fi
+ }
+ checksnap() {
+ # checksubvol /.snapshots grub-snapshot.cfg
+ if [ -e /sysroot/.snapshots/grub-snapshot.cfg ]; then
+ echo true
+ elif grep -qP '^[^#\s]+\s+/.snapshots\s+' /sysroot/etc/fstab; then
+ echo false
+ else
+ echo true
+ fi
+ }
+ checkboot() {
+ [ -d /boot/grub2 ] && echo false || echo true
+ }
+ getterm() {
+ local term="$(getarg TERM)"
+ [ -z "$term" ] && term=dumb
+ echo $term
+ }
+ debug() {
+ if [ -n "$1" ]; then
+ echo "$1" >> /dev/.grub2.debug
+ fi
+ shift;
+ [ -n "$*" ] || return 0
+ echo "+ $*" >> /dev/.grub2.debug
+ "$@" >> /dev/.grub2.debug
+ }
+
+ exec_prefix=@exec_prefix@
+ bindir=@bindir@
+ if [ -e /sysroot$bindir/grub2-emu ]; then
+
+ export TERM=$(getterm)
+ export grub2rofs=$(checkro /sysroot)
+ export grub2roufs=$(checkro /sysroot/usr)
+ export grub2sysfs=$(checkd /sysroot/sys/devices/system/memory)
+ export grub2procfs=$(checkd /sysroot/proc/self)
+ export grub2bootfs=$(checkboot)
+ export grub2bootw=$(checksubvol /boot/writable)
+ export grub2devfs=$(checkd /sysroot/dev/disk)
+ export grub2snap=$(checksnap)
+ debug "" export -p
+
+ _ctty="$(RD_DEBUG= getarg rd.ctty=)" && _ctty="/dev/${_ctty##*/}"
+ if [ -z "$_ctty" ]; then
+ _ctty=$(showconsole)
+ fi
+ if [ -z "$_ctty" ]; then
+ _ctty=console
+ while [ -f /sys/class/tty/$_ctty/active ]; do
+ _ctty=$(cat /sys/class/tty/$_ctty/active)
+ _ctty=${_ctty##* } # last one in the list
+ done
+ _ctty=/dev/$_ctty
+ fi
+ [ -c "$_ctty" ] || _ctty=/dev/console
+ case "$(/usr/bin/setsid --help 2>&1)" in *--ctty*) CTTY="--ctty";; esac
+
+ CTTY="$CTTY --wait"
+ $grub2rofs || mount -o remount,ro /sysroot
+ $grub2roufs || mount -o remount,ro /sysroot/usr
+ $grub2sysfs || mount --bind {,/sysroot}/sys
+ $grub2procfs || mount --bind {,/sysroot}/proc
+ $grub2bootfs || mount --bind {,/sysroot}/boot
+ $grub2devfs || mount --bind {,/sysroot}/dev
+ $grub2snap || chroot /sysroot mount -rn /.snapshots
+ $grub2bootw || chroot /sysroot mount -rn /boot/writable
+ debug "" cat /proc/mounts
+
+ debug "Trying grub2-emu (ro=$grub2rofs, TERM=$TERM, ctty=$_ctty)..."
+ setsid $CTTY -- chroot /sysroot $bindir/grub2-emu -X -X 0<>$_ctty 1>&0 2>&0
+
+ if [ -x /sysroot@libdir@/grub2/zipl-refresh ]; then
+ setsid $CTTY -- /sysroot@libdir@/grub2/zipl-refresh 0<>$_ctty 1>&0 2>&0
+ if [ $? != 0 ]; then
+ warn "Not continuing"
+ emergency_shell -n grub2-emu-zipl-refresh
+ else
+ echo "+ reboot" >& $_ctty
+ sleep 3
+ reboot
+ fi
+ else
+ echo "
+ Attention: 'grub2' failed to start the target kernel and 'zipl-refresh'
+ is not available. This should never happen. Please contact support." >& $_ctty
+ warn "Not continuing"
+ emergency_shell -n grub2-emu-kexec
+ fi
+
+ $grub2snap || umount /sysroot/.snapshots
+ $grub2devfs || umount /sysroot/dev
+ $grub2bootw || umount /sysroot/boot/writable
+ $grub2bootfs || umount /sysroot/boot
+ $grub2procfs || umount /sysroot/proc
+ $grub2sysfs || umount /sysroot/sys
+ $grub2roufs || mount -o remount,rw /sysroot/usr
+ $grub2rofs || mount -o remount,rw /sysroot
+ else
+ warn "No $bindir/grub2-emu in /sysroot--dropping to emergency shell..."
+ emergency_shell -n no-grub2-emu
+ fi
+fi
+
--- /dev/null
+++ b/util/s390x/dracut-module-setup.sh.in
@@ -0,0 +1,19 @@
+#!/bin/bash
+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
+# ex: ts=8 sw=4 sts=4 et filetype=sh
+
+# called by dracut
+check() {
+ local _arch=$(uname -m)
+ [ "$_arch" = "s390" -o "$_arch" = "s390x" ] || return 1
+ return 0
+}
+
+# called by dracut
+install() {
+ inst_hook cleanup 99 "$moddir/grub2.sh"
+ inst_multiple showconsole
+ inst_multiple mount umount chroot cat grep /usr/bin/setsid
+ #inst_multiple grub2-emu kexec
+}
+
--- /dev/null
+++ b/util/s390x/zipl2grub.conf.in
@@ -0,0 +1,26 @@
+## This is the template for '@zipldir@/config' and is subject to
+## rpm's %config file handling in case of grub2-s390x-emu package update.
+
+[defaultboot]
+defaultmenu = menu
+
+[grub2]
+ target = @zipldir@
+ ramdisk = @zipldir@/initrd,0x2000000
+ image = @zipldir@/image
+ parameters = "root=@GRUB_DEVICE@ @GRUB_EMU_CONMODE@ @GRUB_CMDLINE_LINUX@ @GRUB_CMDLINE_LINUX_DEFAULT@ initgrub quiet splash=silent plymouth.enable=0 "
+
+[skip-grub2]
+ target = @zipldir@
+ ramdisk = @zipldir@/initrd,0x2000000
+ image = @zipldir@/image
+ parameters = "root=@GRUB_DEVICE@ @GRUB_CONMODE@ @GRUB_CMDLINE_LINUX@ @GRUB_CMDLINE_LINUX_DEFAULT@ "
+
+:menu
+ target = @zipldir@
+ timeout = 16
+ default = 1
+ prompt = 0
+ 1 = grub2
+ 2 = skip-grub2
+
--- /dev/null
+++ b/util/s390x/zipl2grub.pl.in
@@ -0,0 +1,423 @@
+#!/usr/bin/perl
+use strict;
+
+my $C = $0; $C =~ s{^.*/}{};
+
+my $in = '@sysconfdir@/default/zipl2grub.conf.in';
+my $default = '@sysconfdir@/default/grub';
+my $fallback = '@sysconfdir@/zipl.conf';
+my $sysconfbl = '@sysconfdir@/sysconfig/bootloader';
+my $zipldir = "";
+my $running = "";
+my $refresh = 1; # needs to default to "on" until most bugs are shaken out!
+my $force = 0;
+my $verbose = 0;
+my $debug = 0;
+my $miss = 0;
+my $cfg = "";
+my %fsdev = ();
+my %fstype = ();
+
+my %C = (
+ GRUB_CMDLINE_LINUX_DEFAULT => "quiet splash=silent",
+ GRUB_DISABLE_LINUX_UUID => "false",
+);
+
+my %Mandatory = (
+ GRUB_CMDLINE_LINUX_DEFAULT => 1,
+ GRUB_DEVICE => 1,
+);
+
+sub Panic($$) {
+ printf( STDERR "%s", $_[1]);
+ exit( $_[0]);
+}
+sub Info($$) {
+ printf( STDERR "%s", $_[1]) if ($_[0] <= $verbose);
+}
+sub System(@) {
+ my (@C) =@_;
+ Info( 1, "+ " . join( " ", @C) . "\n");
+ return 0 if ($debug);
+ system( @C);
+ if ($? == -1) {
+ Panic( $?, "$C[0]: Failed to execute: $!\n");
+ } elsif ($? & 127) {
+ Panic( $?, sprintf( "$C[0]: Died with signal %d with%s coredump\n",
+ ($? & 127), ($? & 128) ? '' : 'out'));
+ } elsif ( $? >> 8 != 0 ) {
+ Panic( $?, "$C[0]: Failed\n");
+ }
+ return( 0);
+}
+sub cp($$) {
+ my @C = ( "cp", "-p", $_[0], $_[1]);
+ System( @C);
+}
+sub rm($) {
+ return( 0) unless ( -l $_[0] || -e $_[0]);
+ Info( 2, "+ rm $_[0]\n");
+ return 0 if ($debug);
+ unlink( $_[0]) || Panic( 1, "$C: unlink: $!.\n");
+}
+sub mv($$) {
+ Info( 1, "+ mv $_[0] $_[1]\n");
+ return 0 if ($debug);
+ rename($_[0], $_[1]) || Panic( 1, "$C: rename: $!.\n");
+}
+sub ln($$) {
+ Info( 1, "+ ln -sf $_[0] $_[1]\n");
+ return 0 if ($debug);
+ unlink( $_[1]) || Panic( 1, "$C: unlink: $!.\n") if ( -e $_[1]);
+ symlink($_[0], $_[1]) || Panic( 1, "$C: symlink: $!.\n");
+}
+sub BootCopy($$$) {
+ my( $file, $dir, $tgt) = @_;
+ my $curr = "$dir/$tgt";
+ my $prev = "$dir/$tgt.prev";
+ Info(4, "Copy /boot/$file $dir $tgt\n");
+ if ( -l $curr ) {
+ my $curf = readlink( $curr);
+ if ( $curf ne $file ) {
+ if ( -l $prev ) {
+ my $pref = readlink( $prev);
+ $pref = "$dir/$pref" unless ($pref =~ m{^/});
+ rm( $pref);
+ }
+ mv( $curr, $prev);
+ }
+ }
+ cp( "/boot/$file", "$dir/$file");
+ ln( $file, $curr);
+}
+sub MkInitrd($$$) {
+ my( $initrd, $dir, $version) = @_;
+ my @C = ( "dracut", "--hostonly", "--force");
+ my $uuid;
+ if ( exists( $fsdev{"/boot"}) ) {
+ chomp( $uuid = qx{grub2-probe --target=fs_uuid /boot});
+ my ($dev, $type) = ($fsdev{"/boot"}, $fstype{"/boot"});
+ if ( $type eq "auto" ) {
+ chomp( $type = qx{grub2-probe --target=fs /boot});
+ }
+ if ($C{GRUB_DISABLE_LINUX_UUID} eq "true" &&
+ $dev =~ m{^(UUID=|/dev/disk/by-uuid/)}) {
+ chomp( $dev = qx{grub2-probe --target=device /boot});
+ }
+ push @C, "--mount", "$dev /boot $type ro";
+ }
+ push @C, "$dir/$initrd", $version;
+ System( @C);
+ ln( $initrd, "$dir/initrd");
+}
+sub ChkInitrd($$) {
+ my( $dir, $initrd) = @_;
+ my $found = -1;
+ my $d = $dir;
+ my $pattern = qr{lib/dracut/hooks/cleanup/99-grub2.sh};
+ my $show = "cleanup/99-grub2.sh";
+ my $cat = undef;
+ my $magic;
+
+ return $found unless (-r "$dir/$initrd");
+ open( IN, "< $dir/$initrd") || return $found;
+ my $rd = sysread( IN, $magic, 6);
+ close( IN);
+ return $found unless (defined( $rd) && $rd == 6);
+ $cat = "xzcat" if ($magic eq "\xFD7zXZ\x00");
+ $cat = "zcat" if (substr($magic, 0, 2) eq "\037\213");
+ $cat = "cat" if (substr($magic, 0, 5) eq "07070");
+ return $found unless (defined($cat));
+
+ my $modinst = "/usr/lib/dracut/modules.d/99grub2/module-setup.sh";
+ if ( -r $modinst ) {
+ my( $hook, $ord, $script);
+ my $pat = qr{^\s*inst_hook\s+(\S+)\s+([0-9]+)\s+\"\$moddir/(grub2\.sh)\"};
+ open( IN, "< $modinst") || die;
+ while ( <IN> ) {
+ next unless ($_ =~ $pat);
+ $show = "$1/$2-$3";
+ $pattern = qr{lib/dracut/hooks/$show}o;
+ last;
+ }
+ close( IN);
+ }
+
+ $found = 0;
+ Info( 3, "+ $cat $d/$initrd | cpio -it | grep '$show'\n");
+ open( IN, "$cat $d/$initrd | cpio -it 2>/dev/null |") ||
+ Panic( 1, "$C: cpio: $!.\n");
+ while ( <IN> ) {
+ $found = 1 if ($_ =~ $pattern);
+ }
+ close( IN);
+ return $found;
+}
+
+sub Usage($) {
+ my @cat = ("",
+ "Parameter error.",
+ "zIPL directory missing.",
+ "Configuration template missing.",
+ "Configuration template unreadable.",
+ "zIPL directory not accesible.",
+ ""
+ );
+ my $msg = "";
+
+ $msg .= sprintf( "%s: %s\n", $C, $cat[$_[0]]) if ($_[0] > 0);
+ $msg .= "Usage: $C [-v] [-d] [-f] [-T template] [-z ZIPLDIR]\n";
+ Panic( $_[0], $msg . "\n");
+}
+
+while ( $#ARGV >= 0 ) {
+ $_ = shift;
+ next if /^$/;
+ last if /^--$/;
+ (/^--verbose$/ || /^-v$/) && ($verbose++, next);
+ (/^--quiet$/ || /^-q$/) && ($verbose = 0, next);
+ (/^--debug$/ || /^-d$/) && ($debug = 1, $verbose++, next);
+ (/^--force$/ || /^-f$/) && ($force = $refresh = 1, next);
+ (/^--refresh$/ || /^-r$/) && ($refresh = 1, next);
+ (/^--keep$/ || /^-k$/) && ($refresh = 0, next);
+ (/^--?help/ || /^-h/) && (Usage(0));
+ (/^--zipldir$/ || /^-z$/) && ($zipldir = shift || Usage(2), next);
+ (/^--template$/ || /^-T$/) && ($in = shift || Usage(3), next);
+ (/^-/) && (Usage(1));
+ Usage(1);
+}
+Usage(4) if (! -r $in);
+
+if ($zipldir) {
+ $C{zipldir} = $zipldir; # command-line wins
+} elsif ( exists( $C{zipldir}) ) {
+ $zipldir = $C{zipldir}; # otherwise fall back to config
+} else {
+ $zipldir = $C{zipldir} = "/boot/zipl"; # but don't proceed without...
+}
+Usage(5) if (! -d $zipldir);
+if ( $zipldir eq "/boot" ) {
+ Panic( 5, "$C: zIPL directory '/boot' not supported!\n");
+}
+
+if ( ! -r $default && ! -r $fallback && ! -r $sysconfbl ) {
+ Panic( 0, "$C: No configuration files found. Retry later!\n");
+}
+if ( -r $default ) {
+ open( IN, "< $default") || die;
+ while ( <IN> ) {
+ chomp;
+ s{^\s*#.*$}{};
+ next if m{^\s*$};
+ s{x}{\x01xx\x01}g;
+ s{\\\"}{\x01x1\x01}g;
+ s{\\\'}{\x01x2\x01}g;
+ Info( 5, "<$_>\n");
+ if ( m{^([^\s=]+)='([^']*)'\s*(?:#.*)?$} ||
+ m{^([^\s=]+)="([^"]*)"\s*(?:#.*)?$} ||
+ m{^([^\s=]+)=(\S*)\s*(?:#.*)?$} ) {
+ my ( $k, $v) = ($1, $2);
+ $v =~ s{\x01x2\x01}{\\'}g;
+ $v =~ s{\x01x1\x01}{\\"}g;
+ $v =~ s{\x01xx\x01}{x}g;
+ $C{$k} = $v;
+ next;
+ }
+ print( STDERR "$default:$.: parse error ignored.\n");
+ }
+ close( IN);
+}
+if ( -r "/etc/fstab" ) {
+ my $regex = qr{^(\S+)\s+(\S+)\s+(\S+)\s+\S+\s+\S+\s+\S+\s*(?:#.*)?$};
+ open( IN, "< /etc/fstab") || die;
+ while ( <IN> ) {
+ next if ( m{^\s*#} );
+ my ($dev, $mp, $type) = (m{$regex}o);
+ $fsdev{$mp} = $dev;
+ $fstype{$mp} = $type;
+ }
+ close( IN);
+}
+
+if ( ! exists( $C{GRUB_DEVICE}) &&
+ $C{GRUB_CMDLINE_LINUX_DEFAULT} eq "quiet splash=silent" &&
+ -r $fallback ) {
+ # configuration incomplete, let's try fallback
+ open( IN, "< $fallback") || die;
+ my $section = "";
+ while( <IN> ){
+ if ( m{^\[([^\]]+)\]\s*$} ) {
+ $section = $1;
+ }
+ if ( $section eq "ipl" &&
+ m{^\s*parameters\s*=\s*\"root=(\S+)(?:\s*|\s+([^\"]+))\"} ) {
+ $C{GRUB_DEVICE} = $1;
+ $C{GRUB_CMDLINE_LINUX_DEFAULT} = $2 if (defined($2) && $2 !~ m{^\s*$});
+ last;
+ }
+ }
+ close( IN);
+ $default = $fallback;
+}
+
+if ( ! exists( $C{GRUB_DEVICE}) && exists( $fsdev{"/"}) ) {
+ my( $dev, $type, $subvol) = ( $fsdev{"/"}, $fstype{"/"}, "");
+ if ( $dev !~ m{^(UUID=|/dev/disk/by-uuid/)} ||
+ $C{GRUB_DISABLE_LINUX_UUID} ne "true" ) {
+ $C{GRUB_DEVICE} = $dev;
+ # grub2-mkrelpath fails on rollback -- and provides no known merit...
+ #chomp( $subvol = qx{grub2-mkrelpath /}) if ( $type eq "btrfs" );
+ #$subvol =~ s{^/}{};
+ #$C{GRUB_DEVICE} .= " rootflags=subvol=$subvol" if ($subvol);
+ }
+}
+if ( ! exists( $C{GRUB_DEVICE}) ) {
+ my( $dev, $uuid, $type, $subvol) = ("", "", "", "");
+ chomp( $dev = qx{grub2-probe --target=device /});
+ chomp( $uuid = qx{grub2-probe --device $dev --target=fs_uuid});
+ if ( $dev ) {
+ if ( $uuid && $C{GRUB_DISABLE_LINUX_UUID} ne "true" ) {
+ $C{GRUB_DEVICE} = "UUID=$uuid";
+ } else {
+ $C{GRUB_DEVICE} = "$dev";
+ }
+ chomp( $type = qx{stat -f --printf='%T' /});
+ # grub2-mkrelpath fails on rollback -- and provides no known merit...
+ #chomp( $subvol = qx{grub2-mkrelpath /}) if ( $type eq "btrfs" );
+ #$subvol =~ s{^/}{};
+ #$C{GRUB_DEVICE} .= " rootflags=subvol=$subvol" if ($subvol);
+ }
+}
+if ( $C{GRUB_CMDLINE_LINUX_DEFAULT} eq "quiet splash=silent" &&
+ -r $sysconfbl) {
+ open( IN, "< $sysconfbl") || die;
+ while ( <IN> ) {
+ next if ( m{^\s*#} );
+ if ( m{^DEFAULT_APPEND=".*"(?:\s*|\s+#.*)$} ) {
+ $C{GRUB_CMDLINE_LINUX_DEFAULT} = $1;
+ }
+ }
+ close( IN);
+}
+
+if ( ! exists( $C{GRUB_DEVICE})) {
+ Panic( 0, "$C: Default not ready and no fallback. Please retry later!\n");
+}
+
+if ( ! exists( $C{GRUB_EMU_CONMODE}) && exists( $C{GRUB_CONMODE}) ) {
+ # GRUB_CONMODE is used for 'grub2-emu' as well
+ $C{GRUB_EMU_CONMODE} = $C{GRUB_CONMODE};
+}
+if ( exists( $C{GRUB_EMU_CONMODE}) && !exists( $C{GRUB_CONMODE}) ) {
+ # pick up 'conmode=' from CMDLINE
+ my $found = "";
+ foreach ( "GRUB_CMDLINE_LINUX", "GRUB_CMDLINE_LINUX_DEFAULT" ) {
+ next unless ($C{$_} =~ m{ ?conmode=(\S+) ?});
+ $C{GRUB_CONMODE} = $1;
+ last;
+ }
+ if ( !exists( $C{GRUB_CONMODE}) && $C{GRUB_EMU_CONMODE} eq "3270" ) {
+ # force GRUB_CONMODE to 3215 for least surprise
+ $C{GRUB_CONMODE}="3215";
+ }
+}
+if ( exists( $C{GRUB_EMU_CONMODE}) && exists( $C{GRUB_CONMODE})) {
+ # strip "conmode=" from GRUB_CMDLINE{,_LINUX}_DEFAULT
+ foreach ( "GRUB_CMDLINE_LINUX", "GRUB_CMDLINE_LINUX_DEFAULT" ) {
+ $C{$_} =~ s{( ?)conmode=\S+ ?}{$1}g;
+ }
+}
+foreach ("GRUB_EMU_CONMODE", "GRUB_CONMODE") {
+ next unless( exists( $C{$_}) );
+ $C{$_} = "conmode=" . $C{$_};
+}
+
+if ( $debug && $verbose > 2 ) {
+ foreach ( sort( keys( %C)) ) {
+ printf( "%s=\"%s\"\n", $_, $C{$_});
+ }
+}
+
+open( IN, "< $in") ||
+ Panic( 1, "$C: Failed to open 'zipl.conf' template: $!.\n");
+while ( <IN> ) {
+ Info( 3, "$.. <$_$.. >");
+ if ( $. == 1 && m{^## This} ) {
+ $_ = "## This file was written by 'grub2-install/$C'\n" .
+ "## filling '$in' as template\n";
+ } elsif ( $. == 2 && m{^## rpm's} ) {
+ $_ = "## with values from '$default'.\n" .
+ "## In-place modifications will eventually go missing!\n";
+ }
+ while ( m{\@([^\@\s]+)\@} ) {
+ my $k = $1;
+ my $v;
+ if ( exists( $C{$k}) ) {
+ $v = $C{$k};
+ } elsif ( exists( $Mandatory{$k}) ) {
+ $v = "$k";
+ $miss++;
+ } else {
+ $v = "";
+ }
+ s{\@$k\@}{$v}g;
+ }
+ Info( 2, $_);
+ $cfg .= $_;
+}
+if ( $miss ) {
+ Info( 1, "Partially filled config:\n===\n$cfg===\n");
+ Panic( 1, "$C: 'zipl.conf' template could not be filled. \n");
+}
+
+my $ziplconf = "$zipldir/config";
+if ( ! $debug ) {
+ open( OUT, "> $ziplconf") || die;
+ print( OUT $cfg) || die;
+ close( OUT);
+}
+
+# copy out kernel and initrd
+my $defimage = "/boot/image";
+my $definitrd = "/boot/initrd";
+my $ziplimage = "$zipldir/image";
+my $ziplinitrd = "$zipldir/initrd";
+my $Image = "$defimage";
+
+if ( ! $running && ! $force ) {
+ chomp( $running = qx{uname -r});
+ Info( 1, "preferred kernel: '$running'\n");
+ $Image .= "-$running";
+}
+if ( ! -r $Image ) {
+ $Image = $defimage;
+}
+Panic( 1, "$C: kernel '$Image' not readable!?\n") unless (-r $Image);
+
+if ( -l $Image ) {
+ $Image = readlink( $Image);
+}
+my ($image, $version) = ($Image =~ m{^(?:/boot/)?([^-]+-(.+))$});
+my $initrd = "initrd-$version";
+
+if ( !defined($image) || !defined($version) || ! -r "/boot/$image" ) {
+ Panic( 1, "$C: weird $Image. This should never happen!\n");
+}
+
+if ( ! -r $ziplimage || ! -r $ziplinitrd || $refresh ) {
+ BootCopy( $image, $zipldir, "image");
+ BootCopy( $initrd, $zipldir, "initrd") if (-r "/boot/$initrd");
+}
+if ( $refresh || ChkInitrd( $zipldir, "initrd") <= 0 ) {
+ MkInitrd( $initrd, $zipldir, $version);
+}
+if ( ChkInitrd( $zipldir, "initrd") == 0 ) {
+ Info( 0, "$C: dracut does not work as expected! Help needed!\n");
+ $miss++;
+}
+
+# now: go for it!
+my @C = ( "/sbin/zipl", (($verbose) ? "-Vnc" : "-nc"), "$ziplconf" );
+System( @C);
+exit( $miss);
+
--- /dev/null
+++ b/util/s390x/dracut-zipl-refresh.sh.in
@@ -0,0 +1,183 @@
+#!/bin/bash
+# ex: ts=8 sw=4 sts=4 et filetype=sh syntax=off
+
+debug=false
+TIMEOUT=300
+[ -n "$SYSROOT" ] ||
+SYSROOT=/sysroot
+[ -d $SYSROOT/boot ] || SYSROOT=
+
+sync() { $SYSROOT/usr/bin/sync "$@"; }
+readlink() { $SYSROOT/usr/bin/readlink "$@"; }
+newline() { echo ""; }
+verbose() {
+ local a
+ local m
+ [ -n "$*" ] || return 0
+ m="+"
+ for a in "$@"; do
+ case "$a" in
+ (*" "*|*" "*|"") m="$m '$a'";;
+ (*) m="$m $a";;
+ esac
+ done
+ echo "$m"
+ [ -n "$SYSROOT" -o "$1" = "chroot" ] || return 0
+ "$@"
+}
+
+SYSK="$(readlink $SYSROOT/boot/image)"
+SYSK="${SYSK#image-}"
+ZIPK="$(readlink $SYSROOT/boot/zipl/image)"
+ZIPK="${ZIPK#image-}"
+PRVK="$(readlink $SYSROOT/boot/zipl/image.prev 2> /dev/null)"
+PRVK="${PRVK#image-}"
+RUNK="$(uname -r)"
+# if /boot/zipl is not accessible ZIPK will be empty, assume running kernel
+[ -n "$ZIPK" ] || ZIPK="$RUNK"
+
+[ -n "$SYSROOT" ] || {
+ echo "$0 is not intended for interactive use!"
+ $debug ||
+ exit 0
+ ## test:
+ TIMEOUT=6
+ RUNK=110; ZIPK=110; PRVK=101; SYSK=194
+ ##RUNK=$PRVK; ZIPK=$SYSK # previous booted, newest is default
+ ##t=$ZIPK; ZIPK=$PRVK; PRVK=$t; SYSK=$PRVK # unknown booted
+ ##ZIPK=$SYSK; PRVK="" # no update
+ ##ZIPK=$SYSK # try previous
+ echo "R=$RUNK S=$SYSK Z=$ZIPK P=$PRVK"
+ #verbose echo "a b" z
+ #verbose echo "^h ^j" ^z
+}
+
+trap newline EXIT
+
+echo -n "
+ Attention: 'grub2' failed to start the target kernel"
+
+if [ "$ZIPK" != "$RUNK" -a "$RUNK" != "$SYSK" ]; then
+ # i.e. "previous" has been selected via zipl, but it fails!?
+ [ "$RUNK" = "$PRVK" ] &&
+ echo " from previous" ||
+ echo " from unknown"
+
+ echo " ZIPL kernel ($RUNK). If default ($ZIPK)
+ fails as well, please contact support."
+ exit 1
+fi
+echo "."
+if [ "$ZIPK" = "$SYSK" ]; then
+ [ -z "$PRVK" ] &&
+ echo "
+ No kernel update readily available/installed. Please contact support." ||
+ echo "
+ You may want to try the previous kernel ($PRVK) with
+ 'IPL ... LOADPARM 4', as no update kernel is readily available/installed."
+ exit 1
+fi
+
+echo "
+ A newer kernel ($SYSK) is available and will be deployed
+ in $TIMEOUT seconds. To facilitate this, the affected file-systems have
+ to be made writable, then 'grub2-install --force' needs to be run,
+ and, on success, a 'reboot' will be initiated.
+
+ Press 'c[Enter]' to interrupt, any other input will proceed... "
+
+trap interrupted=1 INT
+interrupted=0
+input=""
+read -t $TIMEOUT input
+case "$input" in
+ ([Cc]) interrupted=2 ;;
+esac
+if [ $interrupted != 0 ]; then
+ echo "
+ Automatic update cancelled..."
+ exit 1
+fi
+trap - INT
+echo "
+ Attempting automatic update..."
+
+ismounted() {
+ local mode="$1"
+ local tgt="$2"
+ local dev mp fs opts dc
+ while read dev mp fs opts dc; do
+ [ "$mp" = "$tgt" ] || continue
+ case ",$opts," in
+ (*,$mode,*) return 0;;
+ esac
+ done < /proc/mounts
+ return 1
+}
+ismp() {
+ local sysr="$1"
+ local tgt="$2"
+ local dev mp fs opts dc
+ while read dev mp fs opts dc; do
+ case "$dev" in
+ ("#"*) continue;;
+ esac
+ [ "$mp" = "$tgt" ] || continue
+ return 0
+ done < $sysr/etc/fstab
+ return 1
+}
+chroot() {
+ local tgt="$1"; shift
+ if [ -z "$tgt" ]; then
+ echo -n "+"
+ verbose "$@"
+ else
+ /usr/bin/chroot "$tgt" "$@"
+ fi
+}
+cleanup() {
+ local mp
+ echo " # cleanup"
+ for mp in $UMOUNT; do
+ verbose chroot "$SYSROOT" umount $mp
+ done
+ for mp in $WMOUNT; do
+ verbose mount -o remount,ro $mp
+ done
+ sync; sync
+ [ -z "$EXIT" ] || echo "$EXIT"
+ echo ""
+}
+trap cleanup EXIT
+UMOUNT=""
+WMOUNT=""
+EXIT=""
+
+echo " # prepare"
+# remount $SYSROOT{,/boot{,/zipl}} read-write
+for mp in {"",/boot{,/zipl}}; do
+ [ -n "$SYSROOT$mp" ] || continue
+ if ismounted rw $SYSROOT$mp; then
+ echo " # $mp: already read-write: ignore"
+ elif ismounted ro $SYSROOT$mp; then
+ verbose mount -o remount,rw $SYSROOT$mp
+ WMOUNT="$SYSROOT$mp $WMOUNT"
+ elif ismp "$SYSROOT" $mp; then
+ verbose chroot "$SYSROOT" mount -w $mp || exit 1
+ UMOUNT="$mp $UMOUNT"
+ fi
+done
+if [ ! -w $SYSROOT/boot/zipl/config ]; then
+ EXIT="ERROR: $SYSROOT/boot/zipl/config not writable! Aborting..."
+ exit 1
+fi
+echo " # action"
+verbose chroot "$SYSROOT" grub2-zipl-setup --force
+ret=$?
+if [ $ret != 0 ]; then
+ EXIT=" # failed ($ret)"
+else
+ EXIT=" # done"
+fi
+exit $ret
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