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

   1 # newline
   2 N="
   3 "
   4
   5 append() {
   6         local var="$1"
   7         local value="$2"
   8         local sep="${3:- }"
   9
  10         eval "export -- \"$var=\${$var:+\${$var}\${value:+\$sep}}\$value\""
  11 }
  12
  13 load_modules() {
  14         if [ -d /lib/modules/$(uname -r) ]; then
  15                 (sed "s,^[^#][^[:space:]]*,insmod /lib/modules/$(uname -r)/&.ko," $* | sh 2>&- || :)
  16         fi
  17 }
  18
  19 user_exists() {
  20         grep -q "^$1:" $IPKG_INSTROOT/etc/passwd 2>&-
  21 }
  22
  23 group_exists() {
  24         grep -q "^$1:" $IPKG_INSTROOT/etc/group 2>&-
  25 }
  26
  27 service_exists() {
  28         grep -q "^$1[[:space:]]*$2" $IPKG_INSTROOT/etc/services 2>&-
  29 }
  30
  31 rcconf_exists() {
  32         grep -q "^#*$1=" $IPKG_INSTROOT/etc/rc.conf 2>&-
  33 }
  34
  35 add_user() {
  36         user_exists $1 || {
  37                 echo "adding user $1 to /etc/passwd"
  38                 echo "$1:x:$2:${3:-$2}:$1:${4:-/tmp}:${5:-/bin/false}" \
  39                     >>$IPKG_INSTROOT/etc/passwd
  40         }
  41 }
  42
  43 add_group() {
  44         group_exists $1 || {
  45                 echo "adding group $1 to /etc/group"
  46                 echo "$1:x:$2:$3" >>$IPKG_INSTROOT/etc/group
  47         }
  48 }
  49
  50 add_service() {
  51         service_exists $1 $2 || {
  52                 echo "adding service $1 to /etc/services"
  53                 printf '%s\t%s\n' "$1" "$2" >>$IPKG_INSTROOT/etc/services
  54         }
  55 }
  56
  57 add_rcconf() {
  58         rcconf_exists $1 || {
  59                 echo "adding service $1 to /etc/rc.conf"
  60                 printf '%s="%s"\n' "${1}" "${2:-NO}" \
  61                         >>$IPKG_INSTROOT/etc/rc.conf
  62         }
  63 }
  64
  65 get_next_uid() {
  66         uid=1
  67         while grep "^[^:]*:[^:]*:$uid:" $IPKG_INSTROOT/etc/passwd \
  68             >/dev/null 2>&1; do
  69                 uid=$(($uid+1))
  70         done
  71         echo $uid
  72 }
  73
  74 get_next_gid() {
  75         gid=1
  76         while grep "^[^:]*:[^:]*:$gid:" $IPKG_INSTROOT/etc/group \
  77             >/dev/null 2>&1; do
  78                 gid=$(($gid+1))
  79         done
  80         echo $gid
  81 }