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mount_linux.go
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mount_linux.go
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// Copyright 2016 The rkt Authors
//
// 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.
//+build linux
package fs
import (
"strings"
"syscall"
)
// String returns a human readable representation of mountFlags based on which bits are set.
// E.g. for a value of syscall.MS_RDONLY|syscall.MS_BIND it will print "MS_RDONLY|MS_BIND"
func (f mountFlags) String() string {
var s []string
maybeAppendFlag := func(ff uintptr, desc string) {
if uintptr(f)&ff != 0 {
s = append(s, desc)
}
}
maybeAppendFlag(syscall.MS_DIRSYNC, "MS_DIRSYNC")
maybeAppendFlag(syscall.MS_MANDLOCK, "MS_MANDLOCK")
maybeAppendFlag(syscall.MS_NOATIME, "MS_NOATIME")
maybeAppendFlag(syscall.MS_NODEV, "MS_NODEV")
maybeAppendFlag(syscall.MS_NODIRATIME, "MS_NODIRATIME")
maybeAppendFlag(syscall.MS_NOEXEC, "MS_NOEXEC")
maybeAppendFlag(syscall.MS_NOSUID, "MS_NOSUID")
maybeAppendFlag(syscall.MS_RDONLY, "MS_RDONLY")
maybeAppendFlag(syscall.MS_REC, "MS_REC")
maybeAppendFlag(syscall.MS_RELATIME, "MS_RELATIME")
maybeAppendFlag(syscall.MS_SILENT, "MS_SILENT")
maybeAppendFlag(syscall.MS_STRICTATIME, "MS_STRICTATIME")
maybeAppendFlag(syscall.MS_SYNCHRONOUS, "MS_SYNCHRONOUS")
maybeAppendFlag(syscall.MS_REMOUNT, "MS_REMOUNT")
maybeAppendFlag(syscall.MS_BIND, "MS_BIND")
maybeAppendFlag(syscall.MS_SHARED, "MS_SHARED")
maybeAppendFlag(syscall.MS_PRIVATE, "MS_PRIVATE")
maybeAppendFlag(syscall.MS_SLAVE, "MS_SLAVE")
maybeAppendFlag(syscall.MS_UNBINDABLE, "MS_UNBINDABLE")
maybeAppendFlag(syscall.MS_MOVE, "MS_MOVE")
return strings.Join(s, "|")
}