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i-t: rewrite hooks
This produces a leaner image, doesn't fail if zdb doesn't exist, properly handles hostnameless systems, doesn't mention crypto modules for no reason, doesn't add useless empty executable in hopes an eight-year-old PR is merged, uses i-t builtins for all copies Also optimize the checkbashisms filter to spawn one (or a few) awks instead of one per regular file and remove initramfs/hooks therefrom due to a command -v false positive Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12017
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@ -159,9 +159,10 @@ checkbashisms:
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-o -name 'paxcheck.sh' -prune \
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-o -name 'make_gitrev.sh' -prune \
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-o -name '90zfs' -prune \
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-o -path '*initramfs/hooks' -prune \
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-o -type f ! -name 'config*' \
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! -name 'libtool' \
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-exec sh -c 'awk "NR==1 && /#!.*bin\/sh.*/ {print FILENAME;}" "{}"' \;); \
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-exec awk 'FNR==1 && /^#!.*bin\/sh/ {print FILENAME}' {} \+); \
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else \
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echo "skipping checkbashisms because checkbashisms is not installed"; \
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fi
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@ -3,115 +3,54 @@
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# Add OpenZFS 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 OpenZFS.
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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="$COPY_FILE_LIST @initconfdir@/zfs"
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COPY_FILE_LIST="$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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if [ "$1" = "prereqs" ]; then
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echo "udev"
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exit
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fi
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. /usr/share/initramfs-tools/hook-functions
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mkdir -p "$DESTDIR/etc/"
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for req in "@sbindir@/zpool" "@sbindir@/zfs" "@mounthelperdir@/mount.zfs"; do
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copy_exec "$req" || {
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echo "$req not available!" >&2
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exit 2
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}
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done
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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 $(find /lib/ -type f -name libgcc_s.so.1)
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copy_exec "@sbindir@/zdb"
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copy_exec "@udevdir@/vdev_id"
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copy_exec "@udevdir@/zvol_id"
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if command -v systemd-ask-password > /dev/null; then
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copy_exec "$(command -v systemd-ask-password)"
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fi
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if [ @LIBFETCH_DYNAMIC@ != 0 ]
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then
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for l in $(find /lib/ -name @LIBFETCH_SONAME@)
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do
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copy_exec "$l"
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# We use pthreads, but i-t from buster doesn't automatically
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# copy this indirect dependency: this can be removed when buster finally dies.
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for libgcc in $(find /lib/ -type f -name libgcc_s.so.[1-9]); do
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copy_exec "$libgcc"
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done
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if [ @LIBFETCH_DYNAMIC@ != 0 ]; then
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for libfetch in $(find /lib/ -name @LIBFETCH_SONAME@); do
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copy_exec "$libfetch"
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done
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fi
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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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copy_file config "/etc/hostid"
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copy_file cache "@sysconfdir@/zfs/zpool.cache"
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copy_file config "@initconfdir@/zfs"
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copy_file config "@sysconfdir@/zfs/zfs-functions"
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copy_file config "@sysconfdir@/zfs/vdev_id.conf"
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copy_file rule "@udevruledir@/60-zvol.rules"
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copy_file rule "@udevruledir@/69-vdev.rules"
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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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manual_add_modules zfs
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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" "$DESTDIR/etc/"
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if [ -f "/etc/hostname" ]; then
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copy_file config "/etc/hostname"
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else
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hostname >"$DESTDIR/etc/hostname"
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hostname="$(mktemp -t hostname.XXXXXXXXXX)"
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hostname > "$hostname"
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copy_file config "$hostname" "/etc/hostname"
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rm -f "$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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@ -1,17 +1,9 @@
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#!/bin/sh
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PREREQ="dropbear"
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prereqs() {
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echo "$PREREQ"
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}
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case "$1" in
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prereqs)
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prereqs
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exit 0
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;;
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esac
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if [ "$1" = "prereqs" ]; then
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echo "dropbear"
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exit
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fi
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. /usr/share/initramfs-tools/hook-functions
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