Openwrt /lib/functions/procd.sh指令碼__openwrt

Openwrt /lib/functions/procd.sh指令碼是在/sbin/procd進程啟動後，將會對hotplug實現進行監聽，當有hotplug的event時，將會使用hotplug.json，執行/etc/hotplug.d/下與event對應的指令檔

[root@PandoraBox:/lib/functions]#cat /lib/functions/procd.sh # 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 $restart_timeout $fail_hreshold $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##   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)#. $IPKG_INSTROOT/usr/share/libubox/jshn.sh_PROCD_SERVICE=_procd_call() {        local old_cb        json_set_namespace procd old_cb        "$@"        json_set_namespace $old_cb}_procd_wrapper() {        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 "$script"        json_add_object instances}_procd_close_service() {        json_close_object        service_triggers        _procd_ubus_call set}_procd_add_array_data() {        while [ "$#" -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() {        json_add_array "triggers"}_procd_open_validate() {        json_add_array "validate"}_procd_add_jail() {        json_add_object "jail"        json_add_string name "$1"        json_add_string root "/tmp/.jail/$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";;                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)                        json_add_int "$type" "$1"                ;;                user|seccomp)                        json_add_string "$type" "$1"                ;;                stdout|stderr)                        json_add_boolean "$type" "$1"                ;;        esac}_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        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        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 "" "$@"                ;;        esac        json_select ..}_procd_close_instance() {        json_close_object}_procd_close_trigger() {        json_close_array}_procd_close_validate() {        json_close_array}_procd_add_instance() {        _procd_open_instance        _procd_set_param command "$@"        _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_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