/branches/gl-inet/package/system/procd/files/procd.sh |
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# procd API: |
# |
# procd_open_service(name, [script]): |
# Initialize a new procd command message containing a service with one or more instances |
# |
# procd_close_service() |
# Send the command message for the service |
# |
# procd_open_instance([name]): |
# Add an instance to the service described by the previous procd_open_service call |
# |
# procd_set_param(type, [value...]) |
# Available types: |
# command: command line (array). |
# respawn info: array with 3 values $fail_threshold $restart_timeout $max_fail |
# env: environment variable (passed to the process) |
# data: arbitrary name/value pairs for detecting config changes (table) |
# file: configuration files (array) |
# netdev: bound network device (detects ifindex changes) |
# limits: resource limits (passed to the process) |
# user info: array with 1 values $username |
# pidfile: file name to write pid into |
# |
# No space separation is done for arrays/tables - use one function argument per command line argument |
# |
# procd_close_instance(): |
# Complete the instance being prepared |
# |
# procd_kill(service, [instance]): |
# Kill a service instance (or all instances) |
# |
# procd_send_signal(service, [instance], [signal]) |
# Send a signal to a service instance (or all instances) |
# |
|
. "$IPKG_INSTROOT/usr/share/libubox/jshn.sh" |
|
PROCD_RELOAD_DELAY=1000 |
_PROCD_SERVICE= |
|
procd_lock() { |
local basescript=$(readlink "$initscript") |
local service_name="$(basename ${basescript:-$initscript})" |
|
flock -n 1000 &> /dev/null |
if [ "$?" != "0" ]; then |
exec 1000>"$IPKG_INSTROOT/var/lock/procd_${service_name}.lock" |
flock 1000 |
if [ "$?" != "0" ]; then |
logger "warning: procd flock for $service_name failed" |
fi |
fi |
} |
|
_procd_call() { |
local old_cb |
|
json_set_namespace procd old_cb |
"$@" |
json_set_namespace $old_cb |
} |
|
_procd_wrapper() { |
procd_lock |
while [ -n "$1" ]; do |
eval "$1() { _procd_call _$1 \"\$@\"; }" |
shift |
done |
} |
|
_procd_ubus_call() { |
local cmd="$1" |
|
[ -n "$PROCD_DEBUG" ] && json_dump >&2 |
ubus call service "$cmd" "$(json_dump)" |
json_cleanup |
} |
|
_procd_open_service() { |
local name="$1" |
local script="$2" |
|
_PROCD_SERVICE="$name" |
_PROCD_INSTANCE_SEQ=0 |
|
json_init |
json_add_string name "$name" |
[ -n "$script" ] && json_add_string script "$script" |
json_add_object instances |
} |
|
_procd_close_service() { |
json_close_object |
_procd_open_trigger |
service_triggers |
_procd_close_trigger |
_procd_open_data |
service_data |
_procd_close_data |
_procd_ubus_call ${1:-set} |
} |
|
_procd_add_array_data() { |
while [ "$#" -gt 0 ]; do |
json_add_string "" "$1" |
shift |
done |
} |
|
_procd_add_array() { |
json_add_array "$1" |
shift |
_procd_add_array_data "$@" |
json_close_array |
} |
|
_procd_add_table_data() { |
while [ -n "$1" ]; do |
local var="${1%%=*}" |
local val="${1#*=}" |
[ "$1" = "$val" ] && val= |
json_add_string "$var" "$val" |
shift |
done |
} |
|
_procd_add_table() { |
json_add_object "$1" |
shift |
_procd_add_table_data "$@" |
json_close_object |
} |
|
_procd_open_instance() { |
local name="$1"; shift |
|
_PROCD_INSTANCE_SEQ="$(($_PROCD_INSTANCE_SEQ + 1))" |
name="${name:-instance$_PROCD_INSTANCE_SEQ}" |
json_add_object "$name" |
[ -n "$TRACE_SYSCALLS" ] && json_add_boolean trace "1" |
} |
|
_procd_open_trigger() { |
let '_procd_trigger_open = _procd_trigger_open + 1' |
[ "$_procd_trigger_open" -gt 1 ] && return |
json_add_array "triggers" |
} |
|
_procd_close_trigger() { |
let '_procd_trigger_open = _procd_trigger_open - 1' |
[ "$_procd_trigger_open" -lt 1 ] || return |
json_close_array |
} |
|
_procd_open_data() { |
let '_procd_data_open = _procd_data_open + 1' |
[ "$_procd_data_open" -gt 1 ] && return |
json_add_object "data" |
} |
|
_procd_close_data() { |
let '_procd_data_open = _procd_data_open - 1' |
[ "$_procd_data_open" -lt 1 ] || return |
json_close_object |
} |
|
_procd_open_validate() { |
json_select .. |
json_add_array "validate" |
} |
|
_procd_close_validate() { |
json_close_array |
json_select triggers |
} |
|
_procd_add_jail() { |
json_add_object "jail" |
json_add_string name "$1" |
|
shift |
|
for a in $@; do |
case $a in |
log) json_add_boolean "log" "1";; |
ubus) json_add_boolean "ubus" "1";; |
procfs) json_add_boolean "procfs" "1";; |
sysfs) json_add_boolean "sysfs" "1";; |
ronly) json_add_boolean "ronly" "1";; |
esac |
done |
json_add_object "mount" |
json_close_object |
json_close_object |
} |
|
_procd_add_jail_mount() { |
local _json_no_warning=1 |
|
json_select "jail" |
[ $? = 0 ] || return |
json_select "mount" |
[ $? = 0 ] || { |
json_select .. |
return |
} |
for a in $@; do |
json_add_string "$a" "0" |
done |
json_select .. |
json_select .. |
} |
|
_procd_add_jail_mount_rw() { |
local _json_no_warning=1 |
|
json_select "jail" |
[ $? = 0 ] || return |
json_select "mount" |
[ $? = 0 ] || { |
json_select .. |
return |
} |
for a in $@; do |
json_add_string "$a" "1" |
done |
json_select .. |
json_select .. |
} |
|
_procd_set_param() { |
local type="$1"; shift |
|
case "$type" in |
env|data|limits) |
_procd_add_table "$type" "$@" |
;; |
command|netdev|file|respawn|watch) |
_procd_add_array "$type" "$@" |
;; |
error) |
json_add_array "$type" |
json_add_string "" "$@" |
json_close_array |
;; |
nice|term_timeout) |
json_add_int "$type" "$1" |
;; |
reload_signal) |
json_add_int "$type" $(kill -l "$1") |
;; |
pidfile|user|seccomp|capabilities) |
json_add_string "$type" "$1" |
;; |
stdout|stderr|no_new_privs) |
json_add_boolean "$type" "$1" |
;; |
esac |
} |
|
_procd_add_timeout() { |
[ "$PROCD_RELOAD_DELAY" -gt 0 ] && json_add_int "" "$PROCD_RELOAD_DELAY" |
return 0 |
} |
|
_procd_add_interface_trigger() { |
json_add_array |
_procd_add_array_data "$1" |
shift |
|
json_add_array |
_procd_add_array_data "if" |
|
json_add_array |
_procd_add_array_data "eq" "interface" "$1" |
shift |
json_close_array |
|
json_add_array |
_procd_add_array_data "run_script" "$@" |
json_close_array |
|
json_close_array |
_procd_add_timeout |
json_close_array |
} |
|
_procd_add_reload_interface_trigger() { |
local script=$(readlink "$initscript") |
local name=$(basename ${script:-$initscript}) |
|
_procd_open_trigger |
_procd_add_interface_trigger "interface.*" $1 /etc/init.d/$name reload |
_procd_close_trigger |
} |
|
_procd_add_config_trigger() { |
json_add_array |
_procd_add_array_data "$1" |
shift |
|
json_add_array |
_procd_add_array_data "if" |
|
json_add_array |
_procd_add_array_data "eq" "package" "$1" |
shift |
json_close_array |
|
json_add_array |
_procd_add_array_data "run_script" "$@" |
json_close_array |
|
json_close_array |
_procd_add_timeout |
json_close_array |
} |
|
_procd_add_raw_trigger() { |
json_add_array |
_procd_add_array_data "$1" |
shift |
local timeout=$1 |
shift |
|
json_add_array |
json_add_array |
_procd_add_array_data "run_script" "$@" |
json_close_array |
json_close_array |
|
json_add_int "" "$timeout" |
|
json_close_array |
} |
|
_procd_add_reload_trigger() { |
local script=$(readlink "$initscript") |
local name=$(basename ${script:-$initscript}) |
local file |
|
_procd_open_trigger |
for file in "$@"; do |
_procd_add_config_trigger "config.change" "$file" /etc/init.d/$name reload |
done |
_procd_close_trigger |
} |
|
_procd_add_validation() { |
_procd_open_validate |
$@ |
_procd_close_validate |
} |
|
_procd_append_param() { |
local type="$1"; shift |
local _json_no_warning=1 |
|
json_select "$type" |
[ $? = 0 ] || { |
_procd_set_param "$type" "$@" |
return |
} |
case "$type" in |
env|data|limits) |
_procd_add_table_data "$@" |
;; |
command|netdev|file|respawn|watch) |
_procd_add_array_data "$@" |
;; |
error) |
json_add_string "" "$@" |
;; |
esac |
json_select .. |
} |
|
_procd_close_instance() { |
local respawn_vals |
_json_no_warning=1 |
if json_select respawn ; then |
json_get_values respawn_vals |
if [ -z "$respawn_vals" ]; then |
local respawn_threshold=$(uci_get system.@service[0].respawn_threshold) |
local respawn_timeout=$(uci_get system.@service[0].respawn_timeout) |
local respawn_retry=$(uci_get system.@service[0].respawn_retry) |
_procd_add_array_data ${respawn_threshold:-3600} ${respawn_timeout:-5} ${respawn_retry:-5} |
fi |
json_select .. |
fi |
|
json_close_object |
} |
|
_procd_add_instance() { |
_procd_open_instance |
_procd_set_param command "$@" |
_procd_close_instance |
} |
|
_procd_kill() { |
local service="$1" |
local instance="$2" |
|
json_init |
[ -n "$service" ] && json_add_string name "$service" |
[ -n "$instance" ] && json_add_string instance "$instance" |
_procd_ubus_call delete |
} |
|
_procd_send_signal() { |
local service="$1" |
local instance="$2" |
local signal="$3" |
|
case "$signal" in |
[A-Z]*) signal="$(kill -l "$signal" 2>/dev/null)" || return 1;; |
esac |
|
json_init |
json_add_string name "$service" |
[ -n "$instance" -a "$instance" != "*" ] && json_add_string instance "$instance" |
[ -n "$signal" ] && json_add_int signal "$signal" |
_procd_ubus_call signal |
} |
|
procd_open_data() { |
local name="$1" |
json_set_namespace procd __procd_old_cb |
json_add_object data |
} |
|
procd_close_data() { |
json_close_object |
json_set_namespace $__procd_old_cb |
} |
|
_procd_set_config_changed() { |
local package="$1" |
|
json_init |
json_add_string type config.change |
json_add_object data |
json_add_string package "$package" |
json_close_object |
|
ubus call service event "$(json_dump)" |
} |
|
procd_add_mdns_service() { |
local service proto port |
service=$1; shift |
proto=$1; shift |
port=$1; shift |
json_add_object "${service}_$port" |
json_add_string "service" "_$service._$proto.local" |
json_add_int port "$port" |
[ -n "$1" ] && { |
json_add_array txt |
for txt in "$@"; do json_add_string "" "$txt"; done |
json_select .. |
} |
json_select .. |
} |
|
procd_add_mdns() { |
procd_open_data |
json_add_object "mdns" |
procd_add_mdns_service "$@" |
json_close_object |
procd_close_data |
} |
|
uci_validate_section() |
{ |
local _package="$1" |
local _type="$2" |
local _name="$3" |
local _result |
local _error |
shift; shift; shift |
_result=`/sbin/validate_data "$_package" "$_type" "$_name" "$@" 2> /dev/null` |
_error=$? |
eval "$_result" |
[ "$_error" = "0" ] || `/sbin/validate_data "$_package" "$_type" "$_name" "$@" 1> /dev/null` |
return $_error |
} |
|
_procd_wrapper \ |
procd_open_service \ |
procd_close_service \ |
procd_add_instance \ |
procd_add_raw_trigger \ |
procd_add_config_trigger \ |
procd_add_interface_trigger \ |
procd_add_reload_trigger \ |
procd_add_reload_interface_trigger \ |
procd_open_trigger \ |
procd_close_trigger \ |
procd_open_instance \ |
procd_close_instance \ |
procd_open_validate \ |
procd_close_validate \ |
procd_add_jail \ |
procd_add_jail_mount \ |
procd_add_jail_mount_rw \ |
procd_set_param \ |
procd_append_param \ |
procd_add_validation \ |
procd_set_config_changed \ |
procd_kill \ |
procd_send_signal |