zfs/scripts/zfs-helpers.sh

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#!/bin/sh
# shellcheck disable=SC2154
#
# This script is designed to facilitate in-tree development and testing
# by installing symlinks on your system which refer to in-tree helper
# utilities. These helper utilities must be installed to in order to
# exercise all ZFS functionality. By using symbolic links and keeping
# the scripts in-tree during development they can be easily modified
# and those changes tracked.
#
# Use the following configuration option to override the installation
# paths for these scripts. The correct path is automatically set for
# most distributions but you can optionally set it for your environment.
#
# --with-mounthelperdir=DIR install mount.zfs in dir [/sbin]
# --with-udevdir=DIR install udev helpers [default=check]
# --with-udevruledir=DIR install udev rules [default=UDEVDIR/rules.d]
# --sysconfdir=DIR install zfs configuration files [PREFIX/etc]
#
BASE_DIR=${0%/*}
SCRIPT_COMMON=common.sh
if [ -f "${BASE_DIR}/${SCRIPT_COMMON}" ]; then
. "${BASE_DIR}/${SCRIPT_COMMON}"
else
echo "Missing helper script ${SCRIPT_COMMON}" && exit 1
fi
PROG=zfs-helpers.sh
DRYRUN="no"
INSTALL="no"
REMOVE="no"
VERBOSE="no"
fail() {
echo "${PROG}: $1" >&2
exit 1
}
msg() {
if [ "$VERBOSE" = "yes" ]; then
echo "$@"
fi
}
usage() {
cat << EOF
USAGE:
$0 [-dhirv]
DESCRIPTION:
Install/remove the ZFS helper utilities.
OPTIONS:
-d Dry run
-h Show this message
-i Install the helper utilities
-r Remove the helper utilities
-v Verbose
$0 -iv
$0 -r
EOF
}
while getopts 'hdirv' OPTION; do
case $OPTION in
h)
usage
exit 1
;;
d)
DRYRUN="yes"
;;
i)
INSTALL="yes"
;;
r)
REMOVE="yes"
;;
v)
VERBOSE="yes"
;;
?)
usage
exit
;;
*)
;;
esac
done
if [ "$INSTALL" = "yes" ] && [ "$REMOVE" = "yes" ]; then
fail "Specify -i or -r but not both"
fi
if [ "$INSTALL" = "no" ] && [ "$REMOVE" = "no" ]; then
fail "Either -i or -r must be specified"
fi
if [ "$(id -u)" != "0" ] && [ "$DRYRUN" = "no" ]; then
fail "Must run as root"
fi
if [ "$INTREE" != "yes" ]; then
fail "Must be run in-tree"
fi
if [ "$VERBOSE" = "yes" ]; then
echo "--- Configuration ---"
echo "udevdir: $INSTALL_UDEV_DIR"
echo "udevruledir: $INSTALL_UDEV_RULE_DIR"
echo "mounthelperdir: $INSTALL_MOUNT_HELPER_DIR"
echo "sysconfdir: $INSTALL_SYSCONF_DIR"
echo "pythonsitedir: $INSTALL_PYTHON_DIR"
echo "dryrun: $DRYRUN"
echo
fi
install() {
src=$1
dst=$2
if [ -h "$dst" ]; then
echo "Symlink exists: $dst"
elif [ -e "$dst" ]; then
echo "File exists: $dst"
elif ! [ -e "$src" ]; then
echo "Source missing: $src"
else
msg "ln -s $src $dst"
if [ "$DRYRUN" = "no" ]; then
DIR=${dst%/*}
mkdir -p "$DIR" >/dev/null 2>&1
ln -s "$src" "$dst"
fi
fi
}
remove() {
dst=$1
if [ -h "$dst" ]; then
msg "rm $dst"
rm "$dst"
DIR=${dst%/*}
rmdir "$DIR" >/dev/null 2>&1
elif [ -e "$dst" ]; then
echo "Expected symlink: $dst"
fi
}
if [ "${INSTALL}" = "yes" ]; then
for cmd in "mount.zfs" "fsck.zfs"; do
install "$CMD_DIR/$cmd" "$INSTALL_MOUNT_HELPER_DIR/$cmd"
done
for udev in "$UDEV_CMD_DIR/zvol_id" "$UDEV_SCRIPT_DIR/vdev_id"; do
install "$udev" "$INSTALL_UDEV_DIR/${udev##*/}"
done
for rule in "60-zvol.rules" "69-vdev.rules" "90-zfs.rules"; do
install "$UDEV_RULE_DIR/$rule" "$INSTALL_UDEV_RULE_DIR/$rule"
done
install "$ZPOOL_SCRIPT_DIR" "$INSTALL_SYSCONF_DIR/zfs/zpool.d"
install "$CONTRIB_DIR/pyzfs/libzfs_core" "$INSTALL_PYTHON_DIR/libzfs_core"
# Ideally we would install these in the configured ${libdir}, which is
# by default "/usr/local/lib and unfortunately not included in the
# dynamic linker search path.
install "$LIB_DIR"/libzfs_core.so.?.?.? "/lib/libzfs_core.so"
install "$LIB_DIR"/libnvpair.so.?.?.? "/lib/libnvpair.so"
[ "$DRYRUN" = "no" ] && ldconfig
else
remove "$INSTALL_MOUNT_HELPER_DIR/mount.zfs"
remove "$INSTALL_MOUNT_HELPER_DIR/fsck.zfs"
remove "$INSTALL_UDEV_DIR/zvol_id"
remove "$INSTALL_UDEV_DIR/vdev_id"
remove "$INSTALL_UDEV_RULE_DIR/60-zvol.rules"
remove "$INSTALL_UDEV_RULE_DIR/69-vdev.rules"
remove "$INSTALL_UDEV_RULE_DIR/90-zfs.rules"
remove "$INSTALL_SYSCONF_DIR/zfs/zpool.d"
remove "$INSTALL_PYTHON_DIR/libzfs_core"
remove "/lib/libzfs_core.so"
remove "/lib/libnvpair.so"
ldconfig
fi
exit 0