88 lines
2.9 KiB
Bash
Executable File
88 lines
2.9 KiB
Bash
Executable File
#!/bin/bash
|
|
############################################################################
|
|
# tools/link.sh
|
|
#
|
|
# Copyright (C) 2008 Gregory Nutt. All rights reserved.
|
|
# Author: Gregory Nutt <gnutt@nuttx.org>
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions
|
|
# are met:
|
|
#
|
|
# 1. Redistributions of source code must retain the above copyright
|
|
# notice, this list of conditions and the following disclaimer.
|
|
# 2. Redistributions in binary form must reproduce the above copyright
|
|
# notice, this list of conditions and the following disclaimer in
|
|
# the documentation and/or other materials provided with the
|
|
# distribution.
|
|
# 3. Neither the name NuttX nor the names of its contributors may be
|
|
# used to endorse or promote products derived from this software
|
|
# without specific prior written permission.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
# POSSIBILITY OF SUCH DAMAGE.
|
|
#
|
|
############################################################################
|
|
#set -x
|
|
|
|
src=$1
|
|
dest=$2
|
|
|
|
# Verify that arguments were provided
|
|
|
|
if [ -z "${src}" -o -z "${dest}" ]; then
|
|
echo "Missing src and/or dest arguments"
|
|
exit 1
|
|
fi
|
|
|
|
# Check if something already exists at the destination path replace it with
|
|
# the new link (which might be different). Note that we check for the
|
|
# the link (-h) before we check for existence (-e) because a bad link will
|
|
# report that it does not exist.
|
|
|
|
if [ -h "${dest}" ]; then
|
|
rm -f "${dest}"
|
|
else
|
|
|
|
# If the path exists and is a directory that contains the "fake link"
|
|
# mark, then treat it like a soft link (i.e., remove the directory)
|
|
|
|
if [ -d "${dest}" -a -f "${dest}/.fakelnk" ]; then
|
|
rm -rf "${dest}"
|
|
else
|
|
|
|
# Does anything exist at the destination path?
|
|
|
|
if [ -e "${dest}" ]; then
|
|
|
|
# It is something else (like a file) or directory that does
|
|
# not contain the "fake link" mark
|
|
|
|
echo "${dest} already exists but is not a symbolic link"
|
|
exit 1
|
|
fi
|
|
fi
|
|
fi
|
|
|
|
# Verify that a directory exists at the source path
|
|
|
|
if [ ! -d "${src}" ]; then
|
|
echo "No directory at ${src}"
|
|
exit 1
|
|
fi
|
|
|
|
# Create the soft link
|
|
|
|
ln -s "${src}" "${dest}" || \
|
|
{ echo "Failed to create link: $dest" ; exit 1 ; }
|