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authorScott Moser <smoser@ubuntu.com>2011-12-20 11:39:46 -0500
committerScott Moser <smoser@ubuntu.com>2011-12-20 11:39:46 -0500
commit27e88fe213b0a3505ca565cae63d7d7124b7f969 (patch)
tree378612fbca7362182ffcfd5e22de1a4cf35dddbf /tools
parentcc915378bd187c8db63b6c65b2e9c7510b8578f6 (diff)
downloadvyos-cloud-init-27e88fe213b0a3505ca565cae63d7d7124b7f969.tar.gz
vyos-cloud-init-27e88fe213b0a3505ca565cae63d7d7124b7f969.zip
replace cloud-init-run-module with cloud-init-per
This replaces cloud-init-run-module (which was probably rarely or never used) with 'cloud-init-per' which does basically the same thing, but doesn't support "modules".
Diffstat (limited to 'tools')
-rwxr-xr-xtools/cloud-init-per60
1 files changed, 60 insertions, 0 deletions
diff --git a/tools/cloud-init-per b/tools/cloud-init-per
new file mode 100755
index 00000000..51194d9f
--- /dev/null
+++ b/tools/cloud-init-per
@@ -0,0 +1,60 @@
+#!/bin/sh
+
+DATA_PRE="/var/lib/cloud/data/bootper"
+INST_PRE="/var/lib/cloud/instance/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=$2
+shift 2;
+
+[ "${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 ${sem}"
+
+[ "$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