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#!/usr/bin/env bash
# SPDX-License-Identifier: LGPL-2.1-or-later
link_endswith() {
[[ -h "${1:?}" && "$(readlink "${1:?}")" =~ ${2:?}$ ]]
}
link_eq() {
[[ -h "${1:?}" && "$(readlink "${1:?}")" == "${2:?}" ]]
}
# Get the value from a 'key=value' assignment
opt_get_arg() {
local arg
IFS="=" read -r _ arg <<< "${1:?}"
test -n "$arg"
echo "$arg"
}
in_initrd() {
[[ "${SYSTEMD_IN_INITRD:-0}" -ne 0 ]]
}
# Check if we're parsing host's fstab in initrd
in_initrd_host() {
in_initrd && [[ "${SYSTEMD_SYSROOT_FSTAB:-/dev/null}" != /dev/null ]]
}
in_container() {
systemd-detect-virt -qc
}
# Filter out "unwanted" options, i.e. options that the fstab-generator doesn't
# propagate to the final mount unit
opt_filter_consumed() {(
set +x
local opt split_options filtered_options
IFS="," read -ra split_options <<< "${1:?}"
for opt in "${split_options[@]}"; do
if [[ "$opt" =~ ^x-systemd.device-timeout= ]]; then
continue
fi
filtered_options+=("$opt")
done
IFS=","; printf "%s" "${filtered_options[*]}"
)}
# Run the given generator $1 with target directory $2 - clean the target
# directory beforehand
run_and_list() {
local generator="${1:?}"
local out_dir="${2:?}"
local environ
# If $PID1_ENVIRON is set temporarily overmount /proc/1/environ with
# a temporary file that contains contents of $PID1_ENVIRON. This is
# necessary in cases where the generator reads the environment through
# getenv_for_pid(1, ...) or similar like getty-generator does.
#
# Note: $PID1_ENVIRON should be a NUL separated list of env assignments
if [[ -n "${PID1_ENVIRON:-}" ]]; then
environ="$(mktemp)"
echo -ne "${PID1_ENVIRON}\0" >"${environ:?}"
mount -v --bind "$environ" /proc/1/environ
fi
rm -fr "${out_dir:?}"/*
mkdir -p "$out_dir"/{normal,early,late}
SYSTEMD_LOG_LEVEL="${SYSTEMD_LOG_LEVEL:-debug}" "$generator" "$out_dir/normal" "$out_dir/early" "$out_dir/late"
ls -lR "$out_dir"
if [[ -n "${environ:-}" ]]; then
umount /proc/1/environ
rm -f "$environ"
fi
}
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