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https://github.com/siderolabs/talos.git
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96aa9638f7
There's a cyclic dependency on siderolink library which imports talos machinery back. We will fix that after we get talos pushed under a new name. Signed-off-by: Andrey Smirnov <andrey.smirnov@talos-systems.com>
125 lines
3.3 KiB
Go
125 lines
3.3 KiB
Go
// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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package mount
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import (
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"log"
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"github.com/siderolabs/talos/pkg/machinery/config"
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)
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const (
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// ReadOnly is a flag for setting the mount point as readonly.
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ReadOnly Flags = 1 << iota
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// Shared is a flag for setting the mount point as shared.
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Shared
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// Resize indicates that a the partition for a given mount point should be
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// resized to the maximum allowed.
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Resize
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// Overlay indicates that a the partition for a given mount point should be
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// mounted using overlayfs.
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Overlay
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// SystemOverlay indicates that overlay directory should be created under tmpfs.
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//
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// SystemOverlay should be combined with Overlay option.
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SystemOverlay
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// ReadonlyOverlay indicates that a the partition for a given mount point should be
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// mounted using multi-layer readonly overlay from multiple partitions given as sources.
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ReadonlyOverlay
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// SkipIfMounted is a flag for skipping mount if the mountpoint is already mounted.
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SkipIfMounted
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// SkipIfNoFilesystem is a flag for skipping formatting and mounting if the mountpoint has not filesystem.
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SkipIfNoFilesystem
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)
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// Flags is the mount flags.
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type Flags uint
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// Options is the functional options struct.
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type Options struct {
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Loopback string
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Prefix string
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MountFlags Flags
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PreMountHooks []Hook
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PostUnmountHooks []Hook
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Encryption config.Encryption
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Logger *log.Logger
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}
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// Option is the functional option func.
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type Option func(*Options)
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// Check checks if all provided flags are set.
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func (f Flags) Check(flags Flags) bool {
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return (f & flags) == flags
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}
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// Intersects checks if at least one flag is set.
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func (f Flags) Intersects(flags Flags) bool {
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return (f & flags) != 0
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}
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// WithPrefix is a functional option for setting the mount point prefix.
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func WithPrefix(o string) Option {
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return func(args *Options) {
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args.Prefix = o
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}
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}
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// WithFlags is a functional option to set up mount flags.
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func WithFlags(flags Flags) Option {
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return func(args *Options) {
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args.MountFlags = flags
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}
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}
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// WithPreMountHooks adds functions to be called before mounting the partition.
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func WithPreMountHooks(hooks ...Hook) Option {
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return func(args *Options) {
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args.PreMountHooks = hooks
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}
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}
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// WithPostUnmountHooks adds functions to be called after unmounting the partition.
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func WithPostUnmountHooks(hooks ...Hook) Option {
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return func(args *Options) {
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args.PostUnmountHooks = hooks
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}
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}
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// WithEncryptionConfig partition encryption configuration.
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func WithEncryptionConfig(cfg config.Encryption) Option {
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return func(args *Options) {
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args.Encryption = cfg
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}
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}
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// WithLogger sets the logger.
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func WithLogger(logger *log.Logger) Option {
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return func(args *Options) {
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args.Logger = logger
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}
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}
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// Hook represents pre/post mount hook.
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type Hook func(p *Point) error
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// NewDefaultOptions initializes a Options struct with default values.
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func NewDefaultOptions(setters ...Option) *Options {
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opts := &Options{
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Loopback: "",
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Prefix: "",
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MountFlags: 0,
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PreMountHooks: []Hook{},
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PostUnmountHooks: []Hook{},
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}
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for _, setter := range setters {
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setter(opts)
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}
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return opts
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}
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