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filesystem.go
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filesystem.go
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// Copyright 2016 CoreOS, 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 types
import (
"errors"
"fmt"
"github.com/coreos/ignition/config/validate/report"
)
var (
ErrFilesystemInvalidFormat = errors.New("invalid filesystem format")
ErrFilesystemNoMountPath = errors.New("filesystem is missing mount or path")
ErrFilesystemMountAndPath = errors.New("filesystem has both mount and path defined")
ErrUsedCreateAndMountOpts = errors.New("cannot use both create object and mount-level options field")
ErrUsedCreateAndWipeFilesystem = errors.New("cannot use both create object and wipeFilesystem field")
ErrWarningCreateDeprecated = errors.New("the create object has been deprecated in favor of mount-level options")
ErrExt4LabelTooLong = errors.New("filesystem labels cannot be longer than 16 characters when using ext4")
ErrBtrfsLabelTooLong = errors.New("filesystem labels cannot be longer than 256 characters when using btrfs")
ErrXfsLabelTooLong = errors.New("filesystem labels cannot be longer than 12 characters when using xfs")
ErrSwapLabelTooLong = errors.New("filesystem labels cannot be longer than 15 characters when using swap")
ErrVfatLabelTooLong = errors.New("filesystem labels cannot be longer than 11 characters when using vfat")
)
func (f Filesystem) Validate() report.Report {
r := report.Report{}
if f.Mount == nil && f.Path == nil {
r.Add(report.Entry{
Message: ErrFilesystemNoMountPath.Error(),
Kind: report.EntryError,
})
}
if f.Mount != nil {
if f.Path != nil {
r.Add(report.Entry{
Message: ErrFilesystemMountAndPath.Error(),
Kind: report.EntryError,
})
}
if f.Mount.Create != nil {
if f.Mount.WipeFilesystem {
r.Add(report.Entry{
Message: ErrUsedCreateAndWipeFilesystem.Error(),
Kind: report.EntryError,
})
}
if len(f.Mount.Options) > 0 {
r.Add(report.Entry{
Message: ErrUsedCreateAndMountOpts.Error(),
Kind: report.EntryError,
})
}
r.Add(report.Entry{
Message: ErrWarningCreateDeprecated.Error(),
Kind: report.EntryWarning,
})
}
}
return r
}
func (f Filesystem) ValidatePath() report.Report {
r := report.Report{}
if f.Path != nil && validatePath(*f.Path) != nil {
r.Add(report.Entry{
Message: fmt.Sprintf("filesystem %q: path not absolute", f.Name),
Kind: report.EntryError,
})
}
return r
}
func (m Mount) Validate() report.Report {
r := report.Report{}
switch m.Format {
case "ext4", "btrfs", "xfs", "swap", "vfat":
default:
r.Add(report.Entry{
Message: ErrFilesystemInvalidFormat.Error(),
Kind: report.EntryError,
})
}
return r
}
func (m Mount) ValidateDevice() report.Report {
r := report.Report{}
if err := validatePath(m.Device); err != nil {
r.Add(report.Entry{
Message: err.Error(),
Kind: report.EntryError,
})
}
return r
}
func (m Mount) ValidateLabel() report.Report {
r := report.Report{}
if m.Label == nil {
return r
}
switch m.Format {
case "ext4":
if len(*m.Label) > 16 {
// source: man mkfs.ext4
r.Add(report.Entry{
Message: ErrExt4LabelTooLong.Error(),
Kind: report.EntryError,
})
}
case "btrfs":
if len(*m.Label) > 256 {
// source: man mkfs.btrfs
r.Add(report.Entry{
Message: ErrBtrfsLabelTooLong.Error(),
Kind: report.EntryError,
})
}
case "xfs":
if len(*m.Label) > 12 {
// source: man mkfs.xfs
r.Add(report.Entry{
Message: ErrXfsLabelTooLong.Error(),
Kind: report.EntryError,
})
}
case "swap":
// mkswap's man page does not state a limit on label size, but through
// experimentation it appears that mkswap will truncate long labels to
// 15 characters, so let's enforce that.
if len(*m.Label) > 15 {
r.Add(report.Entry{
Message: ErrSwapLabelTooLong.Error(),
Kind: report.EntryError,
})
}
case "vfat":
if len(*m.Label) > 11 {
// source: man mkfs.fat
r.Add(report.Entry{
Message: ErrVfatLabelTooLong.Error(),
Kind: report.EntryError,
})
}
}
return r
}