mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-22 16:29:18 +00:00
324096c979
This change updates the create-symlink hook to be equivalent to ln -f -s target link This ensures that links are updated even if they exist in the container being run. Signed-off-by: Evan Lezar <elezar@nvidia.com>
51 lines
1.4 KiB
Go
51 lines
1.4 KiB
Go
/**
|
|
# Copyright (c) NVIDIA CORPORATION. All rights reserved.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
**/
|
|
|
|
package symlinks
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
)
|
|
|
|
// Resolve returns the link target of the specified filename or the filename if it is not a link.
|
|
func Resolve(filename string) (string, error) {
|
|
info, err := os.Lstat(filename)
|
|
if err != nil {
|
|
return filename, fmt.Errorf("failed to get file info: %w", err)
|
|
}
|
|
if info.Mode()&os.ModeSymlink == 0 {
|
|
return filename, nil
|
|
}
|
|
|
|
return os.Readlink(filename)
|
|
}
|
|
|
|
// ForceCreate creates a specified symlink.
|
|
// If a file (or empty directory) exists at the path it is removed.
|
|
func ForceCreate(target string, link string) error {
|
|
_, err := os.Lstat(link)
|
|
if err != nil && !os.IsNotExist(err) {
|
|
return fmt.Errorf("failed to get file info: %w", err)
|
|
}
|
|
if !os.IsNotExist(err) {
|
|
if err := os.Remove(link); err != nil {
|
|
return fmt.Errorf("failed to remove existing file: %w", err)
|
|
}
|
|
}
|
|
return os.Symlink(target, link)
|
|
}
|