commit the systemd waiting mechanism

Note, still broken as cloud-init local is not going to ever touch the
CI_NET_READY file (/run/cloud-init/network-config-ready).

So as this is , it will actually just block for 60 seconds and go on.

1 files changed, 82 insertions, 0 deletions

diff --git a/udev/cloud-init-wait b/udev/cloud-init-wait
new file mode 100755
index 00000000..345333f9
--- /dev/null
+++ b/udev/cloud-init-wait
@@ -0,0 +1,82 @@
+#!/bin/sh
+
+CI_NET_READY="/run/cloud-init/network-config-ready"
+LOG="/run/cloud-init/${0##*/}.log"
+LOG_INIT=0
+DEBUG=0
+
+find_name() {
+    local match="" name="" none="_UNSET" pound="#"
+    while read match name; do
+        [ "${match#${pound}}" = "$match" ] || continue
+        case "$match" in
+            ID_NET_NAME=${ID_NET_NAME:-$none}) _RET="$name"; return 0;;
+            ID_NET_NAME_PATH=${ID_NET_NAME_PATH:-$none}) _RET="$name"; return 0;;
+            MAC_ADDRESS=${MAC_ADDRESS:-$none}) _RET="$name"; return 0;;
+            INTERFACE=${INTERFACE:-$none}) _RET="$name"; return 0;;
+        esac
+     done
+     return 0
+}
+
+block_until_ready() {
+    local fname="$1"
+    local naplen="$2" max="$3" n=0
+    while ! [ -f "$fname" ]; do
+        n=$(($n+1))
+        [ "$n" -ge "$max" ] && return 1
+        sleep $naplen
+    done
+}
+
+log() {
+    [ -n "${LOG}" ] || return
+    [ "${DEBUG:-0}" = "0" ] && return
+
+    if [ $LOG_INIT = 0 ]; then
+        if [ -d "${LOG%/*}" ] || mkdir -p "${LOG%/*}"; then
+            LOG_INIT=1
+        else
+            echo "${0##*/}: WARN: log init to ${LOG%/*}" 1>&2
+            return
+        fi
+    elif [ "$LOG_INIT" = "-1" ]; then
+        return
+    fi
+    local info="$$ $INTERFACE"
+    if [ "$DEBUG" -gt 1 ]; then
+       local up idle
+       read up idle < /proc/uptime
+       info="$$ $INTERFACE $up"
+    fi
+    echo "[$info]" "$@" >> "$LOG"
+}
+
+main() {
+    local name="" readyfile="$CI_NET_READY"
+    local info="INTERFACE=${INTERFACE} ID_NET_NAME=${ID_NET_NAME}"
+    info="$info ID_NET_NAME_PATH=${ID_NET_NAME_PATH}"
+    info="$info MAC_ADDRESS=${MAC_ADDRESS}"
+    log "$info"
+
+    ## Check to see if cloud-init.target is set.  If cloud-init is 
+    ## disabled we do not want to do anything.
+    if [ ! -f "/run/cloud-init/enabled" ]; then
+        log "cloud-init disabled"
+        return 0
+    fi
+
+    block_until_ready "$readyfile" .1 600 ||
+       { log "failed waiting for ready on $INTERFACE"; return 1; }
+
+    #find_name < "$CI_NET_RULES" && name="$_RET" ||
+    #   { log "failed to find match for $INTERFACE"; return 0; }
+
+    log "net config ready"
+    #[ -z "$name" ] || echo "CLOUDINIT_NET_NAME=$name"
+}
+
+main "$@"
+exit
+
+# vi: ts=4 expandtab