package/base-files/files/etc/functions.sh

   1 #!/bin/sh
   2 # Copyright (C) 2006 OpenWrt.org
   3 # Copyright (C) 2006 Fokus Fraunhofer <carsten.tittel@fokus.fraunhofer.de>
   4
   5 alias debug=${DEBUG:-:}
   6
   7 # newline
   8 N="
   9 "
  10
  11 _C=0
  12 NO_EXPORT=1
  13
  14 hotplug_dev() {
  15         env -i ACTION=$1 INTERFACE=$2 /sbin/hotplug-call net
  16 }
  17
  18 append() {
  19         local var="$1"
  20         local value="$2"
  21         local sep="${3:- }"
  22
  23         eval "export ${NO_EXPORT:+-n} -- \"$var=\${$var:+\${$var}\${value:+\$sep}}\$value\""
  24 }
  25
  26 reset_cb() {
  27         config_cb() { return 0; }
  28         option_cb() { return 0; }
  29 }
  30 reset_cb
  31
  32 config () {
  33         local cfgtype="$1"
  34         local name="$2"
  35
  36         export ${NO_EXPORT:+-n} CONFIG_NUM_SECTIONS=$(($CONFIG_NUM_SECTIONS + 1))
  37         name="${name:-cfg$CONFIG_NUM_SECTIONS}"
  38         append CONFIG_SECTIONS "$name"
  39         [ -n "$NO_CALLBACK" ] || config_cb "$cfgtype" "$name"
  40         export ${NO_EXPORT:+-n} CONFIG_SECTION="$name"
  41         export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_TYPE=$cfgtype"
  42 }
  43
  44 option () {
  45         local varname="$1"; shift
  46         local value="$*"
  47
  48         export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_${varname}=$value"
  49         [ -n "$NO_CALLBACK" ] || option_cb "$varname" "$*"
  50 }
  51
  52 config_rename() {
  53         local OLD="$1"
  54         local NEW="$2"
  55         local oldvar
  56         local newvar
  57
  58         [ -n "$OLD" -a -n "$NEW" ] || return
  59         for oldvar in `set | grep ^CONFIG_${OLD}_ | \
  60                 sed -e 's/\(.*\)=.*$/\1/'` ; do
  61                 newvar="CONFIG_${NEW}_${oldvar##CONFIG_${OLD}_}"
  62                 eval "export ${NO_EXPORT:+-n} \"$newvar=\${$oldvar}\""
  63                 unset "$oldvar"
  64         done
  65         export ${NO_EXPORT:+-n} CONFIG_SECTIONS="$(echo " $CONFIG_SECTIONS " | sed -e "s, $OLD , $NEW ,")"
  66
  67         [ "$CONFIG_SECTION" = "$OLD" ] && export ${NO_EXPORT:+-n} CONFIG_SECTION="$NEW"
  68 }
  69
  70 config_unset() {
  71         config_set "$1" "$2" ""
  72 }
  73
  74 config_clear() {
  75         local SECTION="$1"
  76         local oldvar
  77
  78         export ${NO_EXPORT:+-n} CONFIG_SECTIONS="$(echo " $CONFIG_SECTIONS " | sed -e "s, $OLD , ,")"
  79         export ${NO_EXPORT:+-n} CONFIG_SECTIONS="${SECTION:+$CONFIG_SECTIONS}"
  80
  81         for oldvar in `set | grep ^CONFIG_${SECTION:+${SECTION}_} | \
  82                 sed -e 's/\(.*\)=.*$/\1/'` ; do
  83                 unset $oldvar
  84         done
  85 }
  86
  87 config_load() {
  88         local file
  89         case "$1" in
  90                 /*) file="$1";;
  91                 *) file="$UCI_ROOT/etc/config/$1";;
  92         esac
  93         _C=0
  94         export ${NO_EXPORT:+-n} CONFIG_SECTIONS=
  95         export ${NO_EXPORT:+-n} CONFIG_NUM_SECTIONS=0
  96         export ${NO_EXPORT:+-n} CONFIG_SECTION=
  97
  98         [ -e "$file" ] && {
  99                 . $file
 100         } || return 1
 101
 102         ${CONFIG_SECTION:+config_cb}
 103 }
 104
 105 config_get() {
 106         case "$3" in
 107                 "") eval "echo \"\${CONFIG_${1}_${2}}\"";;
 108                 *)  eval "export ${NO_EXPORT:+-n} -- \"$1=\${CONFIG_${2}_${3}}\"";;
 109         esac
 110 }
 111
 112 # config_get_bool <variable> <section> <option> [<default>]
 113 config_get_bool() {
 114         local _tmp
 115         config_get "_tmp" "$2" "$3"
 116         case "$_tmp" in
 117                 1|on|enabled) export ${NO_EXPORT:+-n} "$1=1";;
 118                 0|off|disabled) export ${NO_EXPORT:+-n} "$1=0";;
 119                 *) eval "$1=${4:-0}";;
 120         esac
 121 }
 122
 123 config_set() {
 124         local section="$1"
 125         local option="$2"
 126         local value="$3"
 127         local old_section="$CONFIG_SECTION"
 128
 129         CONFIG_SECTION="$section"
 130         option "$option" "$value"
 131         CONFIG_SECTION="$old_section"
 132 }
 133
 134 config_foreach() {
 135         local function="$1"
 136         local type="$2"
 137         local section cfgtype
 138
 139         [ -z "$CONFIG_SECTIONS" ] && return 0
 140         for section in ${CONFIG_SECTIONS}; do
 141                 config_get cfgtype "$section" TYPE
 142                 [ -n "$type" -a "x$cfgtype" != "x$type" ] && continue
 143                 eval "$function \"\$section\""
 144         done
 145 }
 146
 147 load_modules() {
 148         [ -d /etc/modules.d ] && {
 149                 cd /etc/modules.d
 150                 sed 's/^[^#]/insmod &/' $* | ash 2>&- || :
 151         }
 152 }
 153
 154 include() {
 155         local file
 156
 157         for file in $(ls $1/*.sh 2>/dev/null); do
 158                 . $file
 159         done
 160 }
 161
 162 find_mtd_part() {
 163         local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
 164         local PREFIX=/dev/mtdblock
 165
 166         PART="${PART##mtd}"
 167         [ -d /dev/mtdblock ] && PREFIX=/dev/mtdblock/
 168         echo "${PART:+$PREFIX$PART}"
 169 }
 170
 171 strtok() { # <string> { <variable> [<separator>] ... }
 172         local tmp
 173         local val="$1"
 174         local count=0
 175
 176         shift
 177
 178         while [ $# -gt 1 ]; do
 179                 tmp="${val%%$2*}"
 180
 181                 [ "$tmp" = "$val" ] && break
 182
 183                 val="${val#$tmp$2}"
 184
 185                 export ${NO_EXPORT:+-n} "$1=$tmp"; count=$((count+1))
 186                 shift 2
 187         done
 188
 189         if [ $# -gt 0 -a -n "$val" ]; then
 190                 export ${NO_EXPORT:+-n} "$1=$val"; count=$((count+1))
 191         fi
 192
 193         return $count
 194 }
 195
 196
 197 jffs2_mark_erase() {
 198         local part="$(find_mtd_part "$1")"
 199         [ -z "$part" ] && {
 200                 echo Partition not found.
 201                 return 1
 202         }
 203         echo -e "\xde\xad\xc0\xde" | mtd -qq write - "$1"
 204 }