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