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: /usr/bin/ [ drwxr-xr-x ]
name : cloud-init-per #!/bin/sh # This file is part of cloud-init. See LICENSE file for license information. DATA_PRE="/var/lib/cloud/sem/bootper" INST_PRE="/var/lib/cloud/instance/sem/bootper" Usage() { cat <<EOF Usage: ${0##*/} frequency name cmd [ arg1 [ arg2 [ ... ] ] run cmd with arguments provided. This utility can make it easier to use boothooks or bootcmd on a per "once" or "always" basis. If frequency is: * once: run only once (do not re-run for new instance-id) * instance: run only the first boot for a given instance-id * always: run every boot EOF } error() { echo "$@" 1>&2; } fail() { [ $# -eq 0 ] || error "$@"; exit 1; } # support the old 'cloud-init-run-module freq name "execute" cmd arg1' # if < 3 arguments, it will fail below on usage. if [ "${0##*/}" = "cloud-init-run-module" ]; then if [ $# -le 2 -o "$3" = "execute" ]; then error "Warning: ${0##*/} is deprecated. Please use cloud-init-per." freq=$1; name=$2; [ $# -le 2 ] || shift 3; set -- "$freq" "$name" "$@" else fail "legacy cloud-init-run-module only supported with module 'execute'" fi fi [ "$1" = "-h" -o "$1" = "--help" ] && { Usage ; exit 0; } [ $# -ge 3 ] || { Usage 1>&2; exit 1; } freq=$1 name=$(echo $2 | sed 's/-/_/g') shift 2; [ "${name#*/}" = "${name}" ] || fail "name cannot contain a /" [ "$(id -u)" = "0" ] || fail "must be root" case "$freq" in once|always) sem="${DATA_PRE}.$name.$freq";; instance) sem="${INST_PRE}.$name.$freq";; *) Usage 1>&2; fail "invalid frequency: $freq";; esac [ -d "${sem%/*}" ] || mkdir -p "${sem%/*}" || fail "failed to make directory for ${sem}" # Rename legacy sem files with dashes in their names. Do not overwrite existing # sem files to prevent clobbering those which may have been created from calls # outside of cloud-init. sem_legacy=$(echo $sem | sed 's/_/-/g') [ "$sem" != "$sem_legacy" -a -e "$sem_legacy" ] && mv -n "$sem_legacy" "$sem" [ "$freq" != "always" -a -e "$sem" ] && exit 0 "$@" ret=$? printf "%s\t%s\n" "$ret" "$(date +%s)" > "$sem" || fail "failed to write to $sem" exit $ret