etc/rc.d/sysctl

   1 #!/bin/sh
   2 #
   3 # $NetBSD: sysctl,v 1.12 2002/04/29 12:10:23 lukem Exp $
   4 # $FreeBSD: src/etc/rc.d/sysctl,v 1.12 2003/04/24 08:20:47 mtm Exp $
   5 #
   6
   7 # PROVIDE: sysctl
   8 # REQUIRE: FILESYSTEMS
   9 # REQUIRE: modules
  10 # BEFORE:  NETWORKING
  11
  12 . /etc/rc.subr
  13
  14 name="sysctl"
  15 required_files="/etc/sysctl.conf"
  16 stop_cmd=":"
  17 start_cmd="sysctl_start"
  18 reload_cmd="sysctl_start"
  19 lastload_cmd="sysctl_start last"
  20 extra_commands="reload lastload"
  21
  22 sysctl_start()
  23 {
  24         local config extra mib val old_val output
  25
  26         if [ ! -f "/etc/sysctl.conf" ]; then
  27                 return
  28         fi
  29
  30         # NOTE: Do not miss the last line when it does not end with a LF.
  31         while read config extra || [ -n "${config}" ]; do
  32                 case ${config} in
  33                 \#*|'')
  34                         continue
  35                         ;;
  36                 *[^=]=[^=]*)
  37                         mib=${config%=*}
  38                         val=${config#*=}
  39                         ;;
  40                 *)
  41                         warn "invalid syntax: ${config}"
  42                         continue
  43                         ;;
  44                 esac
  45
  46                 if old_val=$(${SYSCTL_N} -q ${mib}); then
  47                         debug "sysctl '${mib}': '${old_val}' -> '${val}'"
  48                         if [ "${old_val}" != "${val}" ]; then
  49                                 output=$(${SYSCTL_W} ${mib}=${val})
  50                                 echo ${output}
  51                         fi
  52                 elif [ "$1" = "last" ]; then
  53                         warn "sysctl '${mib}' does not exist."
  54                 fi
  55         done < /etc/sysctl.conf
  56 }
  57
  58 load_rc_config $name
  59 run_rc_command "$1"