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1cc635a2dd
This commit add a new feature for Debian-based distributions to unlock encrypted root partition over SSH. This feature is very handy on headless NAS or VPS cloud servers. To use this feature, you will need to install the dropbear-initramfs package. Reviewed-By: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-By: Tom Caputi <tcaputi@datto.com> Signed-off-by: Andrey Prokopenko <job@terem.fr> Signed-off-by: Richard Laager <rlaager@wiktel.com> Closes #10027
110 lines
2.9 KiB
Bash
Executable File
110 lines
2.9 KiB
Bash
Executable File
#!/bin/sh
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#
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# Add ZoL filesystem capabilities to an initrd, usually for a native ZFS root.
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#
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# This hook installs udev rules for ZoL.
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PREREQ="udev"
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# These prerequisites are provided by the zfsutils package. The zdb utility is
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# not strictly required, but it can be useful at the initramfs recovery prompt.
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COPY_EXEC_LIST="@sbindir@/zdb @sbindir@/zpool @sbindir@/zfs"
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COPY_EXEC_LIST="$COPY_EXEC_LIST @mounthelperdir@/mount.zfs @udevdir@/vdev_id"
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COPY_EXEC_LIST="$COPY_EXEC_LIST @udevdir@/zvol_id"
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COPY_FILE_LIST="/etc/hostid @sysconfdir@/zfs/zpool.cache"
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COPY_FILE_LIST="$COPY_FILE_LIST @DEFAULT_INITCONF_DIR@/zfs"
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COPY_FILE_LIST="$COPY_FILE_LIST @sysconfdir@/zfs/zfs-functions"
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COPY_FILE_LIST="$COPY_FILE_LIST @sysconfdir@/zfs/vdev_id.conf"
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COPY_FILE_LIST="$COPY_FILE_LIST @udevruledir@/60-zvol.rules"
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COPY_FILE_LIST="$COPY_FILE_LIST @udevruledir@/69-vdev.rules"
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# These prerequisites are provided by the base system.
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COPY_EXEC_LIST="$COPY_EXEC_LIST /usr/bin/dirname /bin/hostname /sbin/blkid"
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COPY_EXEC_LIST="$COPY_EXEC_LIST /usr/bin/env"
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COPY_EXEC_LIST="$COPY_EXEC_LIST $(which systemd-ask-password)"
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# Explicitly specify all kernel modules because automatic dependency resolution
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# is unreliable on many systems.
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BASE_MODULES="zlib_deflate spl zavl zcommon znvpair zunicode zlua zfs icp"
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CRPT_MODULES="sun-ccm sun-gcm sun-ctr"
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MANUAL_ADD_MODULES_LIST="$BASE_MODULES"
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# Generic result code.
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RC=0
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case $1 in
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prereqs)
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echo "$PREREQ"
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exit 0
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;;
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esac
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for ii in $COPY_EXEC_LIST
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do
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if [ ! -x "$ii" ]
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then
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echo "Error: $ii is not executable."
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RC=2
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fi
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done
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if [ "$RC" -ne 0 ]
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then
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exit "$RC"
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fi
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. /usr/share/initramfs-tools/hook-functions
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mkdir -p "$DESTDIR/etc/"
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# ZDB uses pthreads for some functions, but the library dependency is not
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# automatically detected. The `find` utility and extended `cp` options are
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# used here because libgcc_s.so could be in a subdirectory of /lib for
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# multi-arch installations.
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cp --target-directory="$DESTDIR" --parents $(find /lib/ -type f -name libgcc_s.so.1)
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for ii in $COPY_EXEC_LIST
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do
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copy_exec "$ii"
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done
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for ii in $COPY_FILE_LIST
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do
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dir=$(dirname "$ii")
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[ -d "$dir" ] && mkdir -p "$DESTDIR/$dir"
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[ -f "$ii" ] && cp -p "$ii" "$DESTDIR/$ii"
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done
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for ii in $MANUAL_ADD_MODULES_LIST
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do
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manual_add_modules "$ii"
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done
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if [ -f "/etc/hostname" ]
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then
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cp -p "/etc/hostname" "$DESTDIR/etc/"
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else
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hostname >"$DESTDIR/etc/hostname"
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fi
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for ii in zfs zfs.conf spl spl.conf
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do
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if [ -f "/etc/modprobe.d/$ii" ]; then
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if [ ! -d "$DESTDIR/etc/modprobe.d" ]; then
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mkdir -p $DESTDIR/etc/modprobe.d
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fi
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cp -p "/etc/modprobe.d/$ii" $DESTDIR/etc/modprobe.d/
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fi
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done
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# With pull request #1476 (not yet merged) comes a verbose warning
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# if /usr/bin/net doesn't exist or isn't executable. Just create
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# a dummy...
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[ ! -d "$DESTDIR/usr/bin" ] && mkdir -p "$DESTDIR/usr/bin"
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if [ ! -x "$DESTDIR/usr/bin/net" ]; then
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touch "$DESTDIR/usr/bin/net"
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chmod +x "$DESTDIR/usr/bin/net"
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fi
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exit 0
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