package/base-files/files/lib/functions/migrations.sh

   1 #!/bin/sh
   2
   3 . /lib/functions.sh
   4
   5 migrate_led_sysfs() {
   6         local cfg="$1"; shift
   7         local tuples="$@"
   8         local sysfs
   9         local name
  10
  11         config_get sysfs ${cfg} sysfs
  12         config_get name ${cfg} name
  13
  14         [ -z "${sysfs}" ] && return
  15
  16         for tuple in ${tuples}; do
  17                 local old=${tuple%=*}
  18                 local new=${tuple#*=}
  19                 local new_sysfs
  20
  21                 new_sysfs=$(echo ${sysfs} | sed "s/${old}/${new}/")
  22
  23                 [ "${new_sysfs}" = "${sysfs}" ] && continue
  24
  25                 uci set system.${cfg}.sysfs="${new_sysfs}"
  26
  27                 logger -t led-migration "sysfs option of LED \"${name}\" updated to ${new_sysfs}"
  28         done;
  29 }
  30
  31 remove_devicename_led_sysfs() {
  32         local cfg="$1"; shift
  33         local exceptions="$@"
  34         local sysfs
  35         local name
  36         local new_sysfs
  37
  38         config_get sysfs ${cfg} sysfs
  39         config_get name ${cfg} name
  40
  41         # only continue if two or more colons are present
  42         echo "${sysfs}" | grep -q ":.*:" || return
  43
  44         for exception in ${exceptions}; do
  45                 # no change if exceptions provided as argument are found for devicename
  46                 echo "${sysfs}" | grep -q "^${exception}:" && return
  47         done
  48
  49         new_sysfs=$(echo ${sysfs} | sed "s/^[^:]*://")
  50
  51         uci set system.${cfg}.sysfs="${new_sysfs}"
  52
  53         logger -t led-migration "sysfs option of LED \"${name}\" updated to ${new_sysfs}"
  54 }
  55
  56 migrate_leds() {
  57         config_load system
  58         config_foreach migrate_led_sysfs led "$@"
  59 }
  60
  61 remove_devicename_leds() {
  62         config_load system
  63         config_foreach remove_devicename_led_sysfs led "$@"
  64 }
  65
  66 migrations_apply() {
  67         local realm="$1"
  68         [ -n "$(uci changes ${realm})" ] && uci -q commit ${realm}
  69 }