mirror_zfs/contrib/initramfs/hooks/zfs.in
Michael Niewöhner c75d3968bd initramfs: fixes for (debian) initramfs
* contrib/initramfs: include /etc/default/zfs and /etc/zfs/zfs-functions
At least debian needs /etc/default/zfs and /etc/zfs/zfs-functions for
its initramfs. Include both in build when initramfs is configured.

* contrib/initramfs: include 60-zvol.rules and zvol_id
Include 60-zvol.rules and zvol_id and set udev as predependency instead
of debians zdev. This makes debians additional zdev hook unneeded.

* Correct initconfdir substitution for some distros
Not every Linux distro is using @sysconfdir@/default but @initconfdir@
which is already determined by configure. Let's use it.

* systemd: prevent possible conflict between systemd and sysvinit
Systemd will not load a sysvinit service if a unit exists with the same
name. This prevents conflicts between sysvinit and systemd.
In ZFS there is one sysvinit service that does not have a systemd
service but a target counterpart, zfs-import.target.
Usually it does not make any sense to install both but it is possisble.
Let's prevent any conflict by masking zfs-import.service by default.
This does not harm even if init.d/zfs-import does not exist.

Reviewed-by: Chris Wedgwood <cw@f00f.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Tested-by: Alex Ingram <reimu@reimuhakurei.net>
Tested-by: Dreamcat4 <dreamcat4@gmail.com>
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Closes #7904
Closes #9089
2020-01-22 13:48:57 -08:00

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#!/bin/sh
#
# Add ZoL filesystem capabilities to an initrd, usually for a native ZFS root.
#
# This hook installs udev rules for ZoL.
PREREQ="udev"
# These prerequisites are provided by the zfsutils package. The zdb utility is
# not strictly required, but it can be useful at the initramfs recovery prompt.
COPY_EXEC_LIST="@sbindir@/zdb @sbindir@/zpool @sbindir@/zfs"
COPY_EXEC_LIST="$COPY_EXEC_LIST @mounthelperdir@/mount.zfs @udevdir@/vdev_id"
COPY_EXEC_LIST="$COPY_EXEC_LIST @udevdir@/zvol_id"
COPY_FILE_LIST="/etc/hostid @sysconfdir@/zfs/zpool.cache"
COPY_FILE_LIST="$COPY_FILE_LIST @DEFAULT_INITCONF_DIR@/zfs"
COPY_FILE_LIST="$COPY_FILE_LIST @sysconfdir@/zfs/zfs-functions"
COPY_FILE_LIST="$COPY_FILE_LIST @sysconfdir@/zfs/vdev_id.conf"
COPY_FILE_LIST="$COPY_FILE_LIST @udevruledir@/60-zvol.rules"
COPY_FILE_LIST="$COPY_FILE_LIST @udevruledir@/69-vdev.rules"
# These prerequisites are provided by the base system.
COPY_EXEC_LIST="$COPY_EXEC_LIST /usr/bin/dirname /bin/hostname /sbin/blkid"
COPY_EXEC_LIST="$COPY_EXEC_LIST /usr/bin/env"
# Explicitly specify all kernel modules because automatic dependency resolution
# is unreliable on many systems.
BASE_MODULES="zlib_deflate spl zavl zcommon znvpair zunicode zlua zfs icp"
CRPT_MODULES="sun-ccm sun-gcm sun-ctr"
MANUAL_ADD_MODULES_LIST="$BASE_MODULES"
# Generic result code.
RC=0
case $1 in
prereqs)
echo "$PREREQ"
exit 0
;;
esac
for ii in $COPY_EXEC_LIST
do
if [ ! -x "$ii" ]
then
echo "Error: $ii is not executable."
RC=2
fi
done
if [ "$RC" -ne 0 ]
then
exit "$RC"
fi
. /usr/share/initramfs-tools/hook-functions
mkdir -p "$DESTDIR/etc/"
# ZDB uses pthreads for some functions, but the library dependency is not
# automatically detected. The `find` utility and extended `cp` options are
# used here because libgcc_s.so could be in a subdirectory of /lib for
# multi-arch installations.
cp --target-directory="$DESTDIR" --parents $(find /lib/ -type f -name libgcc_s.so.1)
for ii in $COPY_EXEC_LIST
do
copy_exec "$ii"
done
for ii in $COPY_FILE_LIST
do
dir=$(dirname "$ii")
[ -d "$dir" ] && mkdir -p "$DESTDIR/$dir"
[ -f "$ii" ] && cp -p "$ii" "$DESTDIR/$ii"
done
for ii in $MANUAL_ADD_MODULES_LIST
do
manual_add_modules "$ii"
done
if [ -f "/etc/hostname" ]
then
cp -p "/etc/hostname" "$DESTDIR/etc/"
else
hostname >"$DESTDIR/etc/hostname"
fi
for ii in zfs zfs.conf spl spl.conf
do
if [ -f "/etc/modprobe.d/$ii" ]; then
if [ ! -d "$DESTDIR/etc/modprobe.d" ]; then
mkdir -p $DESTDIR/etc/modprobe.d
fi
cp -p "/etc/modprobe.d/$ii" $DESTDIR/etc/modprobe.d/
fi
done
# With pull request #1476 (not yet merged) comes a verbose warning
# if /usr/bin/net doesn't exist or isn't executable. Just create
# a dummy...
[ ! -d "$DESTDIR/usr/bin" ] && mkdir -p "$DESTDIR/usr/bin"
if [ ! -x "$DESTDIR/usr/bin/net" ]; then
touch "$DESTDIR/usr/bin/net"
chmod +x "$DESTDIR/usr/bin/net"
fi
exit 0