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minio/posix-utils_nix.go

66 lines
1.9 KiB

// +build linux darwin dragonfly freebsd netbsd openbsd
/*
* Minio Cloud Storage, (C) 2016 Minio, Inc.
*
* 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 main
import (
"os"
"strings"
"unicode/utf8"
)
const pathMax = 4096 // 4k limit on all unixes.
// isValidPath verifies if a path name is in accordance with FS limitations.
func isValidPath(path string) bool {
if len(path) > pathMax || len(path) == 0 {
return false
}
if !utf8.ValidString(path) {
return false
}
return true
}
// isValidVolname verifies a volname name in accordance with object
// layer requirements.
func isValidVolname(volname string) bool {
if len(volname) < 3 || len(volname) > 63 {
return false
}
// Volname shouldn't have '/' in it.
return !strings.ContainsAny(volname, "/")
}
// mkdirAll creates a directory named path,
// along with any necessary parents, and returns nil,
// or else returns an error. The permission bits perm are used
// for all directories that mkdirAll creates. If path is already
// a directory, mkdirAll does nothing and returns nil.
func mkdirAll(path string, perm os.FileMode) error {
return os.MkdirAll(path, perm)
}
// removeAll removes path and any children it contains.
// It removes everything it can but returns the first error
// it encounters. If the path does not exist, RemoveAll
// returns nil (no error).
func removeAll(path string) error {
return os.RemoveAll(path)
}