diff options
Diffstat (limited to 'debian/patches/systemd-support.patch')
| -rw-r--r-- | debian/patches/systemd-support.patch | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/debian/patches/systemd-support.patch b/debian/patches/systemd-support.patch new file mode 100644 index 0000000..06868eb --- /dev/null +++ b/debian/patches/systemd-support.patch @@ -0,0 +1,171 @@ +Description: Add scripts to support kexec rebots with systemd + systemd supports kexec reboots natively. To perform kexec + reboot, one can rely upon systemctl loading the kexec kernel + image or one must load a kexec kernel image before reboot. + systemctl supports loading kexec image only on systems that + support boot loader spec. This patch adds a script that can + determine the right kernel to load and load it in memory ready + for kexec. +Author: Khalid Aziz <khalid@debian.org> +Origin: other, Debian addition +Bug: https://bugs.debian.org +Last-Update: 2023-09-28 +--- +This patch header follows DEP-3: http://dep.debian.net/deps/dep3/ +--- a/Makefile.in ++++ b/Makefile.in +@@ -184,10 +184,11 @@ + + MAN_PAGES:=$(KEXEC_MANPAGE) $(VMCORE_DMESG_MANPAGE) + MAN_PAGES+=$(MANDIR)/man8/coldreboot.8 ++MAN_PAGES+=$(MANDIR)/man8/kexec-load-kernel.8 + BINARIES_i386:=$(KEXEC_TEST) + BINARIES_x86_64:=$(KEXEC_TEST) + BINARIES:=$(KEXEC) $(VMCORE_DMESG) $(BINARIES_$(ARCH)) +-SCRIPTS:=$(SBINDIR)/coldreboot ++SCRIPTS:=$(SBINDIR)/coldreboot $(SBINDIR)/kexec-load-kernel + + UNINSTALL_KDUMP = $(sbindir)/kdump + UNINSTALL_KDUMP_MANPAGE = $(mandir)/man8/kdump.8 +--- a/kexec/Makefile ++++ b/kexec/Makefile +@@ -107,6 +107,8 @@ + KEXEC_MANPAGE = $(MANDIR)/man8/kexec.8 + KEXEC_COLDREBOOT=$(SBINDIR)/coldreboot + KEXEC_COLDREBOOT_MANPAGE=$(MANDIR)/man8/coldreboot.8 ++KEXEC_LOADKERNEL=$(SBINDIR)/kexec-load-kernel ++KEXEC_LOADKERNEL_MANPAGE=$(MANDIR)/man8/kexec-load-kernel.8 + + -include $(KEXEC_DEPS) + +@@ -131,6 +133,15 @@ + @$(MKDIR) -p $(MANDIR)/man8 + cp kexec/coldreboot.8 $(KEXEC_COLDREBOOT_MANPAGE) + ++$(KEXEC_LOADKERNEL): kexec/kexec-load-kernel ++ @$(MKDIR) -p $(@D) ++ cp kexec/kexec-load-kernel $(KEXEC_LOADKERNEL) ++ /bin/chmod 755 $(KEXEC_LOADKERNEL) ++ ++$(KEXEC_LOADKERNEL_MANPAGE): kexec/kexec-load-kernel.8 ++ @$(MKDIR) -p $(MANDIR)/man8 ++ cp kexec/kexec-load-kernel.8 $(KEXEC_LOADKERNEL_MANPAGE) ++ + echo:: + @echo "KEXEC_SRCS $(KEXEC_SRCS)" + @echo "KEXEC_DEPS $(KEXEC_DEPS)" +--- /dev/null ++++ b/kexec/kexec-load-kernel +@@ -0,0 +1,90 @@ ++#! /bin/sh ++ ++PATH=/sbin:/bin:/usr/sbin:/usr/bin ++NOKEXECFILE=/no-kexec-reboot ++ ++. /lib/lsb/init-functions ++ ++test -r /etc/default/kexec && . /etc/default/kexec ++if [ -d /etc/default/kexec.d ] ; then ++ for snippet in $(run-parts --list /etc/default/kexec.d) ; do ++ . "$snippet" ++ done ++fi ++ ++process_grub_entry() { ++ initrd_image= ++ while read command args; do ++ if [ "$command" = "linux" ]; then ++ echo "$args" | while read kernel append; do ++ echo KERNEL_IMAGE=\"${prefix}${kernel}\" ++ echo APPEND=\"${append}\" ++ done ++ elif [ "$command" = "initrd" ]; then ++ initrd_image=${prefix}${args} ++ fi ++ done ++ echo INITRD=\"$initrd_image\" ++} ++ ++get_grub_kernel() { ++ test -f /boot/grub/grub.cfg || return ++ local prefix ++ mountpoint -q /boot && prefix=/boot || prefix= ++ data=$(cat /boot/grub/grub.cfg) ++ ++ default=$(echo "$data" | awk '/set default/ {print $2}' | cut -d'"' -f2 | tail -1) ++ if [ "$default" = '${saved_entry}' ]; then ++ default=$(sed -ne 's/^saved_entry=//p' /boot/grub/grubenv) ++ fi ++ if [ -z "$default" ]; then ++ default=0 ++ fi ++ start_offset=$((default + 1)) ++ end_offset=$((default + 2)) ++ ++ # grub entries start with "menuentry" commands. Get the line ++ # numbers that surround the first entry ++ offsets=$(echo "$data" | grep -n '^[[:space:]]*menuentry[[:space:]]' | cut -d: -f1) ++ begin=$(echo "$offsets" | tail -n+$start_offset | head -n1) ++ end=$(echo "$offsets" | tail -n+$end_offset | head -n1) ++ ++ # If this is the last entry, we need to read to the end of the file ++ # or to the end of boot entry section ++ if [ -z "$end" ]; then ++ numlines=$(echo "$data" | tail --lines=+$begin | grep -n "^### END" | head -1 | cut -d: -f1) ++ end=$((begin + numlines - 1)) ++ fi ++ ++ length=$((end - begin)) ++ entry=$(echo "$data" | tail -n+$begin | head -n$length) ++ eval $(echo "$entry" | process_grub_entry) ++} ++ ++load_kernel () { ++ test -x /sbin/kexec || exit 0 ++ test "x`cat /sys/kernel/kexec_loaded`y" = "x1y" && exit 0 ++ ++ if [ -f $NOKEXECFILE ] ++ then ++ /bin/rm -f $NOKEXECFILE ++ exit 0 ++ fi ++ ++ test "$USE_GRUB_CONFIG" = "true" && get_grub_kernel ++ ++ REAL_APPEND="$APPEND" ++ ++ test -z "$REAL_APPEND" && REAL_APPEND="`cat /proc/cmdline`" ++ echo "Loading new kernel image into memory" ++ if [ -z "$INITRD" ] ++ then ++ /sbin/kexec -l "$KERNEL_IMAGE" --append="$REAL_APPEND" ++ else ++ /sbin/kexec -l "$KERNEL_IMAGE" --initrd="$INITRD" --append="$REAL_APPEND" ++ fi ++ echo "kexec kernel loaded" ++} ++ ++load_kernel ++exit 0 +--- /dev/null ++++ b/kexec/kexec-load-kernel.8 +@@ -0,0 +1,19 @@ ++.\" Process this file with ++.\" groff -man -Tascii kexec-load-kernel.8 ++.\" ++.TH kexec 8 "April 2006" Linux "User Manuals" ++.SH NAME ++kexec-load-kernel \- Load the default grub kernel into kexec buffer ++.SH SYNOPSIS ++.B /sbin/kexec-load-kernel ++ ++.SH DESCRIPTION ++.B kexec-load-kernel ++parses grub configuration file to determine the default grub kernel and ++loads it in kexec buffer if kexec reboot is enabled. ++ ++.SH NOTES ++.PP ++.B kexec-load-kernel ++is run just before a kexec reboot to load the new kernel in memory. The ++subsequent call to kexec will result in this kernel to be kexec'd. |