2 #---------------------------------------------------------------------
3 # Script to determine if specified config file is valid or not.
4 # By default, two checks are performed:
6 # - Ensure Upstart can parse overall file successfully
7 # - Ensure all script sections are parseable by shell
9 #---------------------------------------------------------------------
11 # Copyright (C) 2011 Canonical Ltd.
13 # Author: James Hunt <james.hunt@canonical.com>
15 # This program is free software: you can redistribute it and/or modify
16 # it under the terms of the GNU General Public License as published by
17 # the Free Software Foundation, version 3 of the License.
19 # This program is distributed in the hope that it will be useful,
20 # but WITHOUT ANY WARRANTY; without even the implied warranty of
21 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 # GNU General Public License for more details.
24 # You should have received a copy of the GNU General Public License
25 # along with this program. If not, see <http://www.gnu.org/licenses/>.
27 #---------------------------------------------------------------------
30 confdir=$(mktemp -d /tmp/${script_name}.XXXXXXXXXX)
31 upstart_path=/sbin/init
32 initctl_path=/sbin/initctl
40 if [ ! -z "$upstart_pid" ]
42 debug "stopping secondary Upstart (running with PID $upstart_pid)"
43 kill -0 "$upstart_pid" >/dev/null 2>&1 && \
44 kill -9 "$upstart_pid" >/dev/null 2>&1
47 [ -d "$confdir" ] && rm -rf "$confdir"
48 [ $file_valid = y ] && exit 0
55 Description: Determine if specified Upstart (init(8)) job configuration
58 Usage: $script_name [options] -f <conf_file>
59 $script_name [options] <conf_file>
63 -d, --debug : Show some debug output.
64 -f <file>, : Job configuration file to check.
65 --file=<file> (no default).
66 -i <path>, : Specify path to initctl binary
67 --initctl-path=<path> (default=$initctl_path).
68 -s, --noscript : Do not check script sections.
69 -x <path> : Specify path to init daemon binary
70 --upstart-path=<path> (default=$upstart_path).
71 -h, --help : Show this help.
79 [ $debug_enabled = y ] && echo "DEBUG: $msg"
85 printf "ERROR: %s\n" "$msg" >&2
94 # Return 0 if Upstart is running on the D-Bus session bus, else 1.
97 dbus-send --session --print-reply \
98 --dest='com.ubuntu.Upstart' /com/ubuntu/Upstart \
99 org.freedesktop.DBus.Properties.GetAll \
100 string:'com.ubuntu.Upstart0_6' >/dev/null 2>&1
103 trap cleanup EXIT INT TERM
108 --options="df:hi:sx:" \
109 --longoptions="debug file: help initctl-path: noscript upstart-path:" \
113 [ $? -ne 0 ] && { usage; exit 1; }
114 [ $# -eq 0 ] && { usage; exit 0; }
155 [ -z "$file" ] && file="$1"
158 [ "$(id -u)" -eq 0 ] && die "cannot run as root"
160 [ -z "$file" ] && die "must specify configuration file"
161 [ ! -f "$file" ] && die "file $file does not exist"
163 debug "upstart_path=$upstart_path"
164 debug "initctl_path=$initctl_path"
166 for cmd in "$upstart_path" "$initctl_path"
168 [ -f "$cmd" ] || die "Path $cmd does not exist"
169 [ -x "$cmd" ] || die "File $cmd not executable"
170 "$cmd" --help | grep -q -- --session || die "version of $cmd too old"
173 # this is the only safe way to run another instance of Upstart
174 "$upstart_path" --help|grep -q -- --no-startup-event || die "$upstart_path too old"
176 debug "confdir=$confdir"
179 filename=$(basename $file)
181 echo "$filename" | egrep -q '\.conf$' || die "file must end in .conf"
183 job="${filename%.conf}"
185 cp "$file" "$confdir"
189 [ $? -eq 0 ] && die "Another instance of this program is already running"
190 debug "ok - no other running instances detected"
192 upstart_out="$(mktemp --tmpdir "${script_name}-upstart-output.XXXXXXXXXX")"
193 debug "upstart_out=$upstart_out"
195 upstart_cmd=$(printf \
196 "%s --session --no-sessions --no-startup-event --verbose --confdir %s" \
199 debug "upstart_cmd=$upstart_cmd"
201 nohup $upstart_cmd >"$upstart_out" 2>&1 &
204 # Stop the shell outputting a message when Upstart is killed.
205 # We handle this ourselves in cleanup().
208 # wait for Upstart to initialize
211 debug "Waiting for Upstart to reply over D-Bus (attempt $i)"
221 [ $running = n ] && die "failed to ask Upstart to check conf file"
223 debug "Secondary Upstart ($upstart_cmd) running with PID $upstart_pid"
225 if [ "$check_scripts" = y ]
227 for section in pre-start post-start script pre-stop post-stop
229 if egrep -q "\<${section}\>" "$file"
231 cmd='sed -n "/^ *${section}/,/^ *end script/p" $file | /bin/sh -n 2>&1'
232 errors=$(eval "$cmd")
234 die "$(printf "File $file: shell syntax invalid in $section section:\n${errors}")"
239 "$initctl_path" --session list|grep -q "^${job}"
243 echo "File $file: syntax ok"
247 errors=$(grep "$job" "$upstart_out"|sed "s,${confdir}/,,g")
248 die "$(printf "File $file: syntax invalid:\n${errors}")"