src/src/exiwhat.src

   1 #! /bin/sh
   2
   3 # Copyright (c) University of Cambridge, 1995 - 2007
   4 # See the file NOTICE for conditions of use and distribution.
   5
   6 # Except when they appear in comments, the following placeholders in this
   7 # source are replaced when it is turned into a runnable script:
   8 #
   9 # CONFIGURE_FILE_USE_NODE
  10 # CONFIGURE_FILE
  11 # BIN_DIRECTORY
  12 # EXIWHAT_PS_CMD
  13 # EXIWHAT_PS_ARG
  14 # EXIWHAT_KILL_SIGNAL
  15 # EXIWHAT_EGREP_ARG
  16 # EXIWHAT_MULTIKILL_CMD
  17 # EXIWHAT_MULTIKILL_ARG
  18
  19 # PROCESSED_FLAG
  20
  21 # Shell script for seeing what the exim processes are doing. It gets rid
  22 # of the old process log, then sends SIGUSR1 to all exim processes to get
  23 # them to write their state to the log. Then it displays the contents of
  24 # the log.
  25
  26 # The following lines are generated from Exim's configuration file when
  27 # this source is built into a script, but you can subsequently edit them
  28 # without rebuilding things, as long are you are careful not to overwrite
  29 # the script in the next Exim rebuild/install. However, it's best to
  30 # arrange your build-time configuration file to get the correct values.
  31
  32 # Some operating systems have a command that finds processes that match
  33 # certain conditions (by default usually those running specific commands)
  34 # and sends them signals. If such a command is defined for your OS, the
  35 # following variables are set and used.
  36
  37 multikill_cmd=EXIWHAT_MULTIKILL_CMD
  38 multikill_arg=EXIWHAT_MULTIKILL_ARG
  39
  40 # In other operating systems, Exim has to use "ps" and "egrep" to find the
  41 # processes itself. In those cases, the next three variables are used:
  42
  43 ps_cmd=EXIWHAT_PS_CMD
  44 ps_arg=EXIWHAT_PS_ARG
  45 egrep_arg=EXIWHAT_EGREP_ARG
  46
  47 # In both cases, kill_arg is the argument for the (multi)kill command to send
  48 # SIGUSR1 (at least one OS requires a numeric value).
  49
  50 signal=EXIWHAT_KILL_SIGNAL
  51
  52 # See if this installation is using the esoteric "USE_NODE" feature of Exim,
  53 # in which it uses the host's name as a suffix for the configuration file name.
  54
  55 if [ "CONFIGURE_FILE_USE_NODE" = "yes" ]; then
  56   hostsuffix=.`uname -n`
  57 fi
  58
  59 # Now find the configuration file name. This has got complicated because
  60 # CONFIGURE_FILE may now be a list of files. The one that is used is the first
  61 # one that exists. Mimic the code in readconf.c by testing first for the
  62 # suffixed file in each case.
  63
  64 set `awk -F: '{ for (i = 1; i <= NF; i++) print $i }' <<End
  65 CONFIGURE_FILE
  66 End
  67 `
  68 while [ "$config" = "" -a $# -gt 0 ] ; do
  69   if [ -f "$1$hostsuffix" ] ; then
  70     config="$1$hostsuffix"
  71   elif [ -f "$1" ] ; then
  72     config="$1"
  73   fi
  74   shift
  75 done
  76
  77 # check we have a config file
  78 if [ "$config" = "" -o ! -f "$config" ]; then
  79   echo Config file not found.
  80   exit 1
  81 fi
  82
  83 # Determine where the spool directory is. Search for an exim_path setting
  84 # in the configure file; otherwise use the bin directory. Call that version of
  85 # Exim to find the spool directory. BEWARE: a tab character is needed in the
  86 # first command below. It has had a nasty tendency to get lost in the past. Use
  87 # a variable to hold a space and a tab. This is less likely to be touched.
  88
  89 st='     '
  90 exim_path=`grep "^[$st]*exim_path" $config | sed "s/.*=[$st]*//"`
  91 if test "$exim_path" = ""; then exim_path=BIN_DIRECTORY/exim; fi
  92 spool_directory=`$exim_path -C $config -bP spool_directory | sed "s/.*=[ ]*//"`
  93 process_log_path=`$exim_path -C $config -bP process_log_path | sed "s/.*=[ ]*//"`
  94
  95 # The file that Exim writes when sent the SIGUSR1 signal is specified by
  96 # the process_log_path option. If that is not defined, Exim uses the file
  97 # called "exim-process.info" in the spool directory.
  98
  99 log=$process_log_path
 100 if [ "$log" = "" ] ; then
 101   log=$spool_directory/exim-process.info
 102 fi
 103
 104 # Now do the job.
 105
 106 /bin/rm -f ${log}
 107 if [ -f ${log} ]; then
 108   echo "** Failed to remove ${log}"
 109   exit 1
 110 fi
 111
 112 # If there is a multikill command, use it. On some OS this command is called
 113 # "killall" (Linux, FreeBSD). On Solaris it is called "pkill". Note that on
 114 # Solaris, "killall" kills ALL processes - this is the System V version of this
 115 # command, and not what we want!
 116
 117 if [ "$multikill_cmd" != "" ] && type "$multikill_cmd" >/dev/null 2>&1; then
 118   $multikill_cmd $signal "$multikill_arg"
 119
 120 # No multikill command; do it the hard way
 121
 122 else
 123   $ps_cmd $ps_arg | \
 124     egrep "$egrep_arg" | \
 125     awk "{print \"kill $signal \"\$1}" | \
 126     uniq | sh
 127 fi
 128
 129 sleep 1
 130
 131 if [ ! -s ${log} ] ; then echo "No exim process data" ;
 132   else sort -nu ${log} ; fi
 133
 134
 135 # End of exiwhat