OpenWrt – Blame information for rev 4
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Rev | Author | Line No. | Line |
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1 | office | 1 | # procd API: |
2 | # |
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3 | # procd_open_service(name, [script]): |
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4 | # Initialize a new procd command message containing a service with one or more instances |
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5 | # |
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6 | # procd_close_service() |
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7 | # Send the command message for the service |
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8 | # |
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9 | # procd_open_instance([name]): |
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10 | # Add an instance to the service described by the previous procd_open_service call |
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11 | # |
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12 | # procd_set_param(type, [value...]) |
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13 | # Available types: |
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14 | # command: command line (array). |
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15 | # respawn info: array with 3 values $fail_threshold $restart_timeout $max_fail |
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16 | # env: environment variable (passed to the process) |
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17 | # data: arbitrary name/value pairs for detecting config changes (table) |
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18 | # file: configuration files (array) |
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19 | # netdev: bound network device (detects ifindex changes) |
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20 | # limits: resource limits (passed to the process) |
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21 | # user info: array with 1 values $username |
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22 | # pidfile: file name to write pid into |
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23 | # |
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24 | # No space separation is done for arrays/tables - use one function argument per command line argument |
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25 | # |
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26 | # procd_close_instance(): |
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27 | # Complete the instance being prepared |
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28 | # |
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29 | # procd_kill(service, [instance]): |
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30 | # Kill a service instance (or all instances) |
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31 | # |
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32 | # procd_send_signal(service, [instance], [signal]) |
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33 | # Send a signal to a service instance (or all instances) |
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34 | # |
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35 | |||
36 | . "$IPKG_INSTROOT/usr/share/libubox/jshn.sh" |
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37 | |||
38 | PROCD_RELOAD_DELAY=1000 |
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39 | _PROCD_SERVICE= |
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40 | |||
41 | procd_lock() { |
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42 | local basescript=$(readlink "$initscript") |
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43 | local service_name="$(basename ${basescript:-$initscript})" |
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44 | |||
45 | flock -n 1000 &> /dev/null |
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46 | if [ "$?" != "0" ]; then |
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47 | exec 1000>"$IPKG_INSTROOT/var/lock/procd_${service_name}.lock" |
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48 | flock 1000 |
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49 | if [ "$?" != "0" ]; then |
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50 | logger "warning: procd flock for $service_name failed" |
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51 | fi |
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52 | fi |
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53 | } |
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54 | |||
55 | _procd_call() { |
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56 | local old_cb |
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57 | |||
58 | json_set_namespace procd old_cb |
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59 | "$@" |
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60 | json_set_namespace $old_cb |
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61 | } |
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62 | |||
63 | _procd_wrapper() { |
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64 | procd_lock |
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65 | while [ -n "$1" ]; do |
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66 | eval "$1() { _procd_call _$1 \"\$@\"; }" |
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67 | shift |
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68 | done |
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69 | } |
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70 | |||
71 | _procd_ubus_call() { |
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72 | local cmd="$1" |
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73 | |||
74 | [ -n "$PROCD_DEBUG" ] && json_dump >&2 |
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75 | ubus call service "$cmd" "$(json_dump)" |
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76 | json_cleanup |
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77 | } |
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78 | |||
79 | _procd_open_service() { |
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80 | local name="$1" |
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81 | local script="$2" |
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82 | |||
83 | _PROCD_SERVICE="$name" |
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84 | _PROCD_INSTANCE_SEQ=0 |
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85 | |||
86 | json_init |
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87 | json_add_string name "$name" |
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88 | [ -n "$script" ] && json_add_string script "$script" |
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89 | json_add_object instances |
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90 | } |
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91 | |||
92 | _procd_close_service() { |
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93 | json_close_object |
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94 | _procd_open_trigger |
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95 | service_triggers |
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96 | _procd_close_trigger |
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97 | _procd_open_data |
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98 | service_data |
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99 | _procd_close_data |
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100 | _procd_ubus_call ${1:-set} |
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101 | } |
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102 | |||
103 | _procd_add_array_data() { |
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104 | while [ "$#" -gt 0 ]; do |
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105 | json_add_string "" "$1" |
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106 | shift |
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107 | done |
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108 | } |
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109 | |||
110 | _procd_add_array() { |
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111 | json_add_array "$1" |
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112 | shift |
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113 | _procd_add_array_data "$@" |
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114 | json_close_array |
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115 | } |
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116 | |||
117 | _procd_add_table_data() { |
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118 | while [ -n "$1" ]; do |
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119 | local var="${1%%=*}" |
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120 | local val="${1#*=}" |
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121 | [ "$1" = "$val" ] && val= |
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122 | json_add_string "$var" "$val" |
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123 | shift |
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124 | done |
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125 | } |
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126 | |||
127 | _procd_add_table() { |
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128 | json_add_object "$1" |
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129 | shift |
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130 | _procd_add_table_data "$@" |
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131 | json_close_object |
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132 | } |
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133 | |||
134 | _procd_open_instance() { |
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135 | local name="$1"; shift |
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136 | |||
137 | _PROCD_INSTANCE_SEQ="$(($_PROCD_INSTANCE_SEQ + 1))" |
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138 | name="${name:-instance$_PROCD_INSTANCE_SEQ}" |
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139 | json_add_object "$name" |
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140 | [ -n "$TRACE_SYSCALLS" ] && json_add_boolean trace "1" |
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141 | } |
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142 | |||
143 | _procd_open_trigger() { |
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144 | let '_procd_trigger_open = _procd_trigger_open + 1' |
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145 | [ "$_procd_trigger_open" -gt 1 ] && return |
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146 | json_add_array "triggers" |
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147 | } |
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148 | |||
149 | _procd_close_trigger() { |
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150 | let '_procd_trigger_open = _procd_trigger_open - 1' |
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151 | [ "$_procd_trigger_open" -lt 1 ] || return |
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152 | json_close_array |
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153 | } |
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154 | |||
155 | _procd_open_data() { |
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156 | let '_procd_data_open = _procd_data_open + 1' |
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157 | [ "$_procd_data_open" -gt 1 ] && return |
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158 | json_add_object "data" |
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159 | } |
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160 | |||
161 | _procd_close_data() { |
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162 | let '_procd_data_open = _procd_data_open - 1' |
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163 | [ "$_procd_data_open" -lt 1 ] || return |
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164 | json_close_object |
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165 | } |
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166 | |||
167 | _procd_open_validate() { |
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168 | json_select .. |
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169 | json_add_array "validate" |
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170 | } |
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171 | |||
172 | _procd_close_validate() { |
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173 | json_close_array |
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174 | json_select triggers |
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175 | } |
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176 | |||
177 | _procd_add_jail() { |
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178 | json_add_object "jail" |
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179 | json_add_string name "$1" |
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180 | |||
181 | shift |
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182 | |||
183 | for a in $@; do |
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184 | case $a in |
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185 | log) json_add_boolean "log" "1";; |
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186 | ubus) json_add_boolean "ubus" "1";; |
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187 | procfs) json_add_boolean "procfs" "1";; |
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188 | sysfs) json_add_boolean "sysfs" "1";; |
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189 | ronly) json_add_boolean "ronly" "1";; |
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190 | esac |
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191 | done |
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192 | json_add_object "mount" |
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193 | json_close_object |
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194 | json_close_object |
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195 | } |
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196 | |||
197 | _procd_add_jail_mount() { |
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198 | local _json_no_warning=1 |
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199 | |||
200 | json_select "jail" |
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201 | [ $? = 0 ] || return |
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202 | json_select "mount" |
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203 | [ $? = 0 ] || { |
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204 | json_select .. |
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205 | return |
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206 | } |
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207 | for a in $@; do |
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208 | json_add_string "$a" "0" |
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209 | done |
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210 | json_select .. |
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211 | json_select .. |
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212 | } |
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213 | |||
214 | _procd_add_jail_mount_rw() { |
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215 | local _json_no_warning=1 |
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216 | |||
217 | json_select "jail" |
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218 | [ $? = 0 ] || return |
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219 | json_select "mount" |
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220 | [ $? = 0 ] || { |
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221 | json_select .. |
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222 | return |
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223 | } |
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224 | for a in $@; do |
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225 | json_add_string "$a" "1" |
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226 | done |
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227 | json_select .. |
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228 | json_select .. |
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229 | } |
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230 | |||
231 | _procd_set_param() { |
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232 | local type="$1"; shift |
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233 | |||
234 | case "$type" in |
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235 | env|data|limits) |
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236 | _procd_add_table "$type" "$@" |
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237 | ;; |
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238 | command|netdev|file|respawn|watch) |
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239 | _procd_add_array "$type" "$@" |
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240 | ;; |
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241 | error) |
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242 | json_add_array "$type" |
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243 | json_add_string "" "$@" |
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244 | json_close_array |
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245 | ;; |
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246 | nice|term_timeout) |
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247 | json_add_int "$type" "$1" |
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248 | ;; |
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249 | reload_signal) |
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250 | json_add_int "$type" $(kill -l "$1") |
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251 | ;; |
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252 | pidfile|user|seccomp|capabilities) |
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253 | json_add_string "$type" "$1" |
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254 | ;; |
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255 | stdout|stderr|no_new_privs) |
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256 | json_add_boolean "$type" "$1" |
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257 | ;; |
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258 | esac |
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259 | } |
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260 | |||
261 | _procd_add_timeout() { |
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262 | [ "$PROCD_RELOAD_DELAY" -gt 0 ] && json_add_int "" "$PROCD_RELOAD_DELAY" |
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263 | return 0 |
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264 | } |
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265 | |||
266 | _procd_add_interface_trigger() { |
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267 | json_add_array |
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268 | _procd_add_array_data "$1" |
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269 | shift |
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270 | |||
271 | json_add_array |
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272 | _procd_add_array_data "if" |
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273 | |||
274 | json_add_array |
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275 | _procd_add_array_data "eq" "interface" "$1" |
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276 | shift |
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277 | json_close_array |
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278 | |||
279 | json_add_array |
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280 | _procd_add_array_data "run_script" "$@" |
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281 | json_close_array |
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282 | |||
283 | json_close_array |
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284 | _procd_add_timeout |
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285 | json_close_array |
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286 | } |
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287 | |||
288 | _procd_add_reload_interface_trigger() { |
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289 | local script=$(readlink "$initscript") |
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290 | local name=$(basename ${script:-$initscript}) |
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291 | |||
292 | _procd_open_trigger |
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293 | _procd_add_interface_trigger "interface.*" $1 /etc/init.d/$name reload |
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294 | _procd_close_trigger |
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295 | } |
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296 | |||
297 | _procd_add_config_trigger() { |
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298 | json_add_array |
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299 | _procd_add_array_data "$1" |
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300 | shift |
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301 | |||
302 | json_add_array |
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303 | _procd_add_array_data "if" |
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304 | |||
305 | json_add_array |
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306 | _procd_add_array_data "eq" "package" "$1" |
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307 | shift |
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308 | json_close_array |
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309 | |||
310 | json_add_array |
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311 | _procd_add_array_data "run_script" "$@" |
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312 | json_close_array |
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313 | |||
314 | json_close_array |
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315 | _procd_add_timeout |
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316 | json_close_array |
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317 | } |
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318 | |||
319 | _procd_add_raw_trigger() { |
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320 | json_add_array |
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321 | _procd_add_array_data "$1" |
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322 | shift |
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323 | local timeout=$1 |
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324 | shift |
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325 | |||
326 | json_add_array |
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327 | json_add_array |
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328 | _procd_add_array_data "run_script" "$@" |
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329 | json_close_array |
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330 | json_close_array |
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331 | |||
332 | json_add_int "" "$timeout" |
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333 | |||
334 | json_close_array |
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335 | } |
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336 | |||
337 | _procd_add_reload_trigger() { |
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338 | local script=$(readlink "$initscript") |
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339 | local name=$(basename ${script:-$initscript}) |
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340 | local file |
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341 | |||
342 | _procd_open_trigger |
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343 | for file in "$@"; do |
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344 | _procd_add_config_trigger "config.change" "$file" /etc/init.d/$name reload |
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345 | done |
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346 | _procd_close_trigger |
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347 | } |
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348 | |||
349 | _procd_add_validation() { |
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350 | _procd_open_validate |
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351 | $@ |
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352 | _procd_close_validate |
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353 | } |
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354 | |||
355 | _procd_append_param() { |
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356 | local type="$1"; shift |
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357 | local _json_no_warning=1 |
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358 | |||
359 | json_select "$type" |
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360 | [ $? = 0 ] || { |
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361 | _procd_set_param "$type" "$@" |
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362 | return |
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363 | } |
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364 | case "$type" in |
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365 | env|data|limits) |
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366 | _procd_add_table_data "$@" |
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367 | ;; |
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368 | command|netdev|file|respawn|watch) |
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369 | _procd_add_array_data "$@" |
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370 | ;; |
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371 | error) |
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372 | json_add_string "" "$@" |
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373 | ;; |
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374 | esac |
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375 | json_select .. |
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376 | } |
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377 | |||
378 | _procd_close_instance() { |
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379 | local respawn_vals |
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380 | _json_no_warning=1 |
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381 | if json_select respawn ; then |
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382 | json_get_values respawn_vals |
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383 | if [ -z "$respawn_vals" ]; then |
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384 | local respawn_threshold=$(uci_get system.@service[0].respawn_threshold) |
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385 | local respawn_timeout=$(uci_get system.@service[0].respawn_timeout) |
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386 | local respawn_retry=$(uci_get system.@service[0].respawn_retry) |
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387 | _procd_add_array_data ${respawn_threshold:-3600} ${respawn_timeout:-5} ${respawn_retry:-5} |
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388 | fi |
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389 | json_select .. |
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390 | fi |
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391 | |||
392 | json_close_object |
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393 | } |
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394 | |||
395 | _procd_add_instance() { |
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396 | _procd_open_instance |
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397 | _procd_set_param command "$@" |
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398 | _procd_close_instance |
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399 | } |
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400 | |||
401 | _procd_kill() { |
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402 | local service="$1" |
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403 | local instance="$2" |
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404 | |||
405 | json_init |
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406 | [ -n "$service" ] && json_add_string name "$service" |
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407 | [ -n "$instance" ] && json_add_string instance "$instance" |
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408 | _procd_ubus_call delete |
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409 | } |
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410 | |||
411 | _procd_send_signal() { |
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412 | local service="$1" |
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413 | local instance="$2" |
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414 | local signal="$3" |
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415 | |||
416 | case "$signal" in |
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417 | [A-Z]*) signal="$(kill -l "$signal" 2>/dev/null)" || return 1;; |
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418 | esac |
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419 | |||
420 | json_init |
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421 | json_add_string name "$service" |
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422 | [ -n "$instance" -a "$instance" != "*" ] && json_add_string instance "$instance" |
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423 | [ -n "$signal" ] && json_add_int signal "$signal" |
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424 | _procd_ubus_call signal |
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425 | } |
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426 | |||
427 | procd_open_data() { |
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428 | local name="$1" |
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429 | json_set_namespace procd __procd_old_cb |
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430 | json_add_object data |
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431 | } |
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432 | |||
433 | procd_close_data() { |
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434 | json_close_object |
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435 | json_set_namespace $__procd_old_cb |
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436 | } |
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437 | |||
438 | _procd_set_config_changed() { |
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439 | local package="$1" |
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440 | |||
441 | json_init |
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442 | json_add_string type config.change |
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443 | json_add_object data |
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444 | json_add_string package "$package" |
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445 | json_close_object |
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446 | |||
447 | ubus call service event "$(json_dump)" |
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448 | } |
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449 | |||
450 | procd_add_mdns_service() { |
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451 | local service proto port |
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452 | service=$1; shift |
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453 | proto=$1; shift |
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454 | port=$1; shift |
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455 | json_add_object "${service}_$port" |
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456 | json_add_string "service" "_$service._$proto.local" |
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457 | json_add_int port "$port" |
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458 | [ -n "$1" ] && { |
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459 | json_add_array txt |
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460 | for txt in "$@"; do json_add_string "" "$txt"; done |
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461 | json_select .. |
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462 | } |
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463 | json_select .. |
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464 | } |
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465 | |||
466 | procd_add_mdns() { |
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467 | procd_open_data |
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468 | json_add_object "mdns" |
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469 | procd_add_mdns_service "$@" |
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470 | json_close_object |
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471 | procd_close_data |
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472 | } |
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473 | |||
474 | uci_validate_section() |
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475 | { |
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476 | local _package="$1" |
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477 | local _type="$2" |
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478 | local _name="$3" |
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479 | local _result |
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480 | local _error |
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481 | shift; shift; shift |
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482 | _result=`/sbin/validate_data "$_package" "$_type" "$_name" "$@" 2> /dev/null` |
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483 | _error=$? |
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484 | eval "$_result" |
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485 | [ "$_error" = "0" ] || `/sbin/validate_data "$_package" "$_type" "$_name" "$@" 1> /dev/null` |
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486 | return $_error |
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487 | } |
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488 | |||
489 | uci_load_validate() { |
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490 | local _package="$1" |
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491 | local _type="$2" |
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492 | local _name="$3" |
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493 | local _function="$4" |
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494 | local _option |
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495 | local _result |
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496 | shift; shift; shift; shift |
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497 | for _option in "$@"; do |
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498 | eval "local ${_option%%:*}" |
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499 | done |
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500 | uci_validate_section "$_package" "$_type" "$_name" "$@" |
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501 | _result=$? |
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502 | [ -n "$_function" ] || return $_result |
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503 | eval "$_function \"\$_name\" \"\$_result\"" |
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504 | } |
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505 | |||
506 | _procd_wrapper \ |
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507 | procd_open_service \ |
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508 | procd_close_service \ |
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509 | procd_add_instance \ |
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510 | procd_add_raw_trigger \ |
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511 | procd_add_config_trigger \ |
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512 | procd_add_interface_trigger \ |
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513 | procd_add_reload_trigger \ |
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514 | procd_add_reload_interface_trigger \ |
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515 | procd_open_trigger \ |
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516 | procd_close_trigger \ |
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517 | procd_open_instance \ |
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518 | procd_close_instance \ |
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519 | procd_open_validate \ |
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520 | procd_close_validate \ |
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521 | procd_add_jail \ |
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522 | procd_add_jail_mount \ |
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523 | procd_add_jail_mount_rw \ |
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524 | procd_set_param \ |
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525 | procd_append_param \ |
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526 | procd_add_validation \ |
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527 | procd_set_config_changed \ |
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528 | procd_kill \ |
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529 | procd_send_signal |