Home | History | Annotate | Download | only in bin 
      1 #!/bin/bash
      2 #
      3 # Copyright (c) International Business Machines  Corp., 2005
      4 # Author: Avantika Mathur (mathurav (at] us.ibm.com)
      5 #
      6 # This library is free software; you can redistribute it and/or
      7 # modify it under the terms of the GNU Lesser General Public
      8 # License as published by the Free Software Foundation; either
      9 # version 2.1 of the License, or (at your option) any later version.
     10 #
     11 # This library is distributed in the hope that it will be useful,
     12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
     13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     14 # Lesser General Public License for more details.
     15 #
     16 # You should have received a copy of the GNU Lesser General Public
     17 # License along with this library; if not, write to the Free Software
     18 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
     19 #
     20 
     21 mflags=""
     22 #mflags="-n" # Don't futz with mtab
     23 
     24 flag=y
     25 while getopts "n" arg "$@"
     26 do
     27         case "$arg" in
     28         n)      flag=n
     29                 shift
     30                 ;;
     31         esac
     32 done
     33 
     34 bind_type="$1"
     35 dir="$2"
     36 
     37 
     38 if [ ! -d "$dir" ]
     39 then
     40 	if [ -e "$dir" ]; then
     41 		echo "ERROR: a file by the name \"$dir\" exists"
     42 		exit 1
     43 	fi
     44 	mkdir -p "$dir"
     45 	echo "mkdir -p \"$dir\""
     46 fi
     47 
     48 
     49 if [ "$flag" = "y" ] && [ "$bind_type" != slave ]
     50 then
     51 	mount $mflags --bind "$dir" "$dir" || exit $?
     52 	echo "mount $mflags --bind \"$dir\" \"$dir\""
     53 fi
     54 
     55 # Try to use native mount, else fallback to included smount binary
     56 case "$bind_type" in
     57    share)
     58    	echo "mount $mflags --make-rshared \"$dir\""
     59 	mount $mflags --make-rshared "$dir" 2> /dev/null || \
     60 	smount "$dir" rshared || exit $?
     61       	;;
     62    priv)
     63    	echo "mount $mflags --make-rprivate \"$dir\""
     64 	mount $mflags --make-rprivate "$dir" 2> /dev/null || \
     65 	smount "$dir" rprivate || exit $?
     66       	;;
     67    slave)
     68    	echo "mount $mflags --make-rslave \"$dir\""
     69 	mount $mflags --make-rslave "$dir" 2> /dev/null || \
     70 	smount "$dir" rslave || exit $?
     71       	;;
     72    unclone)
     73    	echo "mount $mflags --make-runbindable \"$dir\""
     74 	mount $mflags --make-runbindable "$dir" 2> /dev/null || \
     75 	smount "$dir" runclone || exit $?
     76       	;;
     77    nshare)
     78    	echo "mount $mflags --make-shared \"$dir\""
     79 	mount $mflags --make-shared "$dir" 2> /dev/null || \
     80 	smount "$dir" shared || exit $?
     81       	;;
     82    npriv)
     83    	echo "mount $mflags --make-private \"$dir\""
     84 	mount $mflags --make-private "$dir" 2> /dev/null || \
     85 	smount "$dir" private || exit $?
     86       	;;
     87    nslave)
     88    	echo "mount $mflags --make-slave \"$dir\""
     89 	mount $mflags --make-slave "$dir" 2> /dev/null || \
     90 	smount "$dir" slave || exit $?
     91       	;;
     92    nunclone)
     93    	echo "mount $mflags --make-unbindable \"$dir\""
     94 	mount $mflags --make-unbindable "$dir" 2> /dev/null || \
     95 	smount "$dir" unclone || exit $?
     96       	;;
     97    *)
     98    	echo "$0: unrecognized bind type (1st arg): $bind_type" 1>&2
     99 	exit 1
    100 	;;
    101 esac
    102