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      1 #!/bin/sh
      2 #
      3 # A safe wrapper around rm(1) to avoid cleaning out folks' rootfs's or build
      4 # machines by accident.
      5 #
      6 #    Copyright (C) 2010, Cisco Systems Inc.
      7 #
      8 #    This program is free software; you can redistribute it and/or modify
      9 #    it under the terms of the GNU General Public License as published by
     10 #    the Free Software Foundation; either version 2 of the License, or
     11 #    (at your option) any later version.
     12 #
     13 #    This program is distributed in the hope that it will be useful,
     14 #    but WITHOUT ANY WARRANTY; without even the implied warranty of
     15 #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     16 #    GNU General Public License for more details.
     17 #
     18 #    You should have received a copy of the GNU General Public License along
     19 #    with this program; if not, write to the Free Software Foundation, Inc.,
     20 #    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
     21 #
     22 # Feel free to use this in your standard builds, or just leave it be (it has
     23 # been added to the build tests that should be run before each release to avoid
     24 # build regressions).
     25 #
     26 # Ngie Cooper, February 2010
     27 #
     28 
     29 . "${0%/*}/lib/file_functions.sh"
     30 
     31 opts=
     32 opts_parse_done=0
     33 
     34 set -e
     35 
     36 while [ $# -gt 0 ] ; do
     37 
     38 	if [ $opts_parse_done -eq 0 ] ; then
     39 
     40 		case "$1" in
     41 		-*)
     42 			[ "x$1" = "x--" ] && opts_parse_done=1
     43 			# None of the options to rm(1) are keyed.
     44 			opts="$opts $1"
     45 			;;
     46 		*)
     47 			opts_parse_done=1
     48 			;;
     49 		esac
     50 
     51 	fi
     52 
     53 	if [ $opts_parse_done -eq 1 ] ; then
     54 
     55 		abspath_file=$(_abspath "$1")
     56 
     57 		if [ "x$abspath_file" = "x/" ] ; then
     58 
     59 			cat <<EOF >&2
     60 ${0##*/}: ERROR : not removing \`$1' to avoid removing root directory\!
     61 EOF
     62 			false
     63 
     64 		else
     65 
     66 			if [ "x${SIMULATE_RM:-1}" != x1 ] ; then
     67 				rm ${opts:--f} "$abspath_file"
     68 			fi
     69 
     70 		fi
     71 
     72 	fi
     73 
     74 	shift
     75 
     76 done
     77