check_fs_writable

#!/usr/bin/env bash
# ======================================================================
#
# Check filesystem ... is it readonly?
#
# requirements:
# - none
#
# ----------------------------------------------------------------------
# 2021-03-23  v0.0  <axel.hahn@iml.unibe.ch>
# ======================================================================


. `dirname $0`/inc_pluginfunctions

dirs2test="/tmp /var/tmp"
out=""

# ----------------------------------------------------------------------
# functions
# ----------------------------------------------------------------------

function showHelp(){
cat <<EOF
______________________________________________________________________

CHECK_FS_READONLY check if filesystem is readonly - v0.0

(c) Institute for Medical Education - Univerity of Bern
Licence: GNU GPL 3
______________________________________________________________________


SYNTAX:
`basename $0` [directory [more directories]]

OPTIONS:

    -h or --help   show this help.

PARAMETERS:

    DIRECTORY where to touch a temporary file

EXAMPLE:
`basename $0` /tmp /root /var/www

EOF
}
# ----------------------------------------------------------------------
# MAIN
# ----------------------------------------------------------------------

# --- check required tools
# ph.require bc top


# --- check param -h
case "$1" in
    "--help"|"-h")
        showHelp
        exit 0
        ;;
    *)
esac

# params are directory names ... if a param was given it overrides the internal default
test $# -gt 0 && dirs2test="$*"


# ----- MAKE CHECK

for mydir in $dirs2test
do
  touchfile=$mydir/icinga_touch_testfile__${RANDOM}_${RANDOM}
  out="$out

--- touching something into $mydir
  $( touch $touchfile && ls -l $touchfile && rm -f $touchfile 2>&1 )"
  if [ $? -ne 0 ]; then
    ph.setStatus "critical"
  fi
done


# ----- OUTPUT

ph.status "check if filesystem is writable in $dirs2test $out"
#echo "$out"


# ----- CLEANUP AND BYE!

ph.exit

# ----------------------------------------------------------------------