e2fsprogs/util/install-symlink.in

90 lines
1.4 KiB
Bash

#!/bin/sh
#
# install-symlink source destination destdir
#
SYMLINKS=symlinks
LN_S="@LN_S@"
RM="@RM@"
FORCE_RELATIVE=NO
FORCE_ABSOLUTE=NO
while echo $1 | grep -q -- ^- ;
do
case $1 in
--relative)
FORCE_RELATIVE=YES
;;
--absolute)
FORCE_ABSOLUTE=YES
;;
--debian)
FORCE_ABSOLUTE=NO
FORCE_RELATIVE=NO
;;
--symlinks=*)
SYMLINKS=$(echo $1 | sed -e 's/--symlinks=//')
;;
*)
echo "Unknown option $1"
exit 1
;;
esac
shift;
done
FIX_SYMLINK="$SYMLINKS -c"
SRC="$1"
DEST="$2"
DESTDIR="$3"
if ! echo $SRC | grep -q ^/ ; then
echo $SRC: Source pathname must be absolute
exit 1
fi
if ! echo $DEST | grep -q ^/ ; then
echo $DEST: Destination pathname must be absolute
exit 1
fi
if ! test -e "$DESTDIR$SRC" ; then
echo $DESTDIR$SRC: file or directory does not exist
exit 1
fi
$RM -f "$DESTDIR$DEST"
if test "$LN_S" != "ln -s" ; then
$LN_S "$DESTDIR$SRC" "$DESTDIR$DEST"
exit 0
fi
if test $(dirname "$SRC") = $(dirname "$DEST") ; then
$LN_S "$(basename "$SRC")" "$DESTDIR$DEST"
exit 0
fi
TOP_SRC=$(echo $SRC | awk -F/ '{print $2}')
TOP_DEST=$(echo $DEST | awk -F/ '{print $2}')
if test $FORCE_RELATIVE = YES ; then
TOP_SRC=FORCE
TOP_DEST=FORCE
fi
if test $FORCE_ABSOLUTE = YES ; then
TOP_SRC=FORCE
TOP_DEST=FORCE_ABSOLUTE
fi
if test $TOP_SRC != $TOP_DEST ; then
$LN_S "$SRC" "$DESTDIR$DEST"
else
$LN_S "$DESTDIR$SRC" "$DESTDIR$DEST"
$FIX_SYMLINK "$DESTDIR$DEST"
fi