etc/rc.d/virecover

   1 #!/bin/sh
   2 #
   3 # $FreeBSD$
   4 #
   5
   6 # PROVIDE: virecover
   7 # REQUIRE: mountcritremote ldconfig
   8 # BEFORE:  DAEMON
   9 #
  10 # XXX: should require `mail'!
  11
  12 . /etc/rc.subr
  13
  14 name="virecover"
  15 desc="Recover crashed vi sessions"
  16 rcvar="virecover_enable"
  17 stop_cmd=":"
  18 start_cmd="virecover_start"
  19
  20 virecover_start()
  21 {
  22         [ -d /var/tmp/vi.recover ] || return
  23         find /var/tmp/vi.recover ! -type f -a ! -type d -delete
  24         vibackup=`echo /var/tmp/vi.recover/vi.*`
  25         if [ "${vibackup}" != '/var/tmp/vi.recover/vi.*' ]; then
  26                 echo -n 'Recovering vi editor sessions:'
  27                 for i in /var/tmp/vi.recover/vi.*; do
  28                         # Only test files that are readable.
  29                         if [ ! -r "${i}" ]; then
  30                                 continue
  31                         fi
  32
  33                         # Unmodified nvi editor backup files either have the
  34                         # execute bit set or are zero length.  Delete them.
  35                         if [ -x "${i}" -o ! -s "${i}" ]; then
  36                                 rm -f "${i}"
  37                         fi
  38                 done
  39
  40                 # It is possible to get incomplete recovery files, if the editor
  41                 # crashes at the right time.
  42                 virecovery=`echo /var/tmp/vi.recover/recover.*`
  43                 if [ "${virecovery}" != "/var/tmp/vi.recover/recover.*" ]; then
  44                         for i in /var/tmp/vi.recover/recover.*; do
  45                                 # Only test files that are readable.
  46                                 if [ ! -r "${i}" ]; then
  47                                         continue
  48                                 fi
  49
  50                                 # Delete any recovery files that are zero length,
  51                                 # corrupted, or that have no corresponding backup file.
  52                                 # Else send mail to the user.
  53                                 recfile=`awk '/^X-vi-recover-path:/{print $2}' < "${i}"`
  54                                 if [ -n "${recfile}" -a -s "${recfile}" ]; then
  55                                         sendmail -t < "${i}"
  56                                 else
  57                                         rm -f "${i}"
  58                                 fi
  59                         done
  60                 fi
  61                 echo '.'
  62         fi
  63 }
  64
  65 load_rc_config $name
  66 run_rc_command "$1"