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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,92 @@ | ||
| package nfs | ||
|
|
||
| import ( | ||
| "errors" | ||
| "os" | ||
|
|
||
| "github.com/go-git/go-billy/v5" | ||
| ) | ||
|
|
||
| var errReadOnly = errors.New("read-only file system") | ||
|
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| type ReadOnlyFS struct { | ||
| fs billy.Filesystem | ||
| } | ||
|
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| func NewROFS(fs billy.Filesystem) billy.Filesystem { | ||
| return &ReadOnlyFS{fs: fs} | ||
| } | ||
|
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| func (ro *ReadOnlyFS) Create(filename string) (billy.File, error) { | ||
| return nil, errReadOnly | ||
| } | ||
|
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| func (ro *ReadOnlyFS) OpenFile(filename string, flag int, perm os.FileMode) (billy.File, error) { | ||
| // Disallow any write flags | ||
| if flag != os.O_RDONLY { | ||
| return nil, errReadOnly | ||
| } | ||
| return ro.fs.OpenFile(filename, flag, perm) | ||
| } | ||
|
|
||
| func (ro *ReadOnlyFS) Rename(oldpath, newpath string) error { | ||
| return errReadOnly | ||
| } | ||
|
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| func (ro *ReadOnlyFS) Remove(filename string) error { | ||
| return errReadOnly | ||
| } | ||
|
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| // Delegate read-only operations to the underlying fs | ||
|
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| func (ro *ReadOnlyFS) Open(filename string) (billy.File, error) { | ||
| return ro.fs.Open(filename) | ||
| } | ||
|
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| func (ro *ReadOnlyFS) Stat(filename string) (os.FileInfo, error) { | ||
| return ro.fs.Stat(filename) | ||
| } | ||
|
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| func (ro *ReadOnlyFS) Join(elem ...string) string { | ||
| return ro.fs.Join(elem...) | ||
| } | ||
|
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| func (ro *ReadOnlyFS) TempFile(dir, prefix string) (billy.File, error) { | ||
| return nil, errReadOnly | ||
| } | ||
|
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| func (ro *ReadOnlyFS) ReadDir(path string) ([]os.FileInfo, error) { | ||
| return ro.fs.ReadDir(path) | ||
| } | ||
|
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| func (ro *ReadOnlyFS) MkdirAll(filename string, perm os.FileMode) error { | ||
| return errReadOnly | ||
| } | ||
|
|
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| func (ro *ReadOnlyFS) Lstat(filename string) (os.FileInfo, error) { | ||
| return ro.fs.Lstat(filename) | ||
| } | ||
|
|
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| func (ro *ReadOnlyFS) Symlink(target, link string) error { | ||
| return errReadOnly | ||
| } | ||
|
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| func (ro *ReadOnlyFS) Readlink(link string) (string, error) { | ||
| return ro.fs.Readlink(link) | ||
| } | ||
|
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| func (ro *ReadOnlyFS) Chroot(path string) (billy.Filesystem, error) { | ||
| fs, err := ro.fs.Chroot(path) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return New(fs), nil | ||
| } | ||
|
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||
| func (ro *ReadOnlyFS) Root() string { | ||
| return ro.fs.Root() | ||
| } | ||
|
|
||
| func (ro *ReadOnlyFS) Capabilities() billy.Capability { | ||
| return billy.DefaultCapabilities &^ billy.WriteCapability | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,76 @@ | ||
| //go:build windows | ||
| // +build windows | ||
|
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| package nfs | ||
|
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| import ( | ||
| "context" | ||
| "fmt" | ||
| "net" | ||
| "time" | ||
|
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| "github.com/go-git/go-billy/v5/osfs" | ||
| "github.com/sonroyaalmerol/pbs-plus/internal/agent/snapshots" | ||
| "github.com/sonroyaalmerol/pbs-plus/internal/utils" | ||
| "github.com/willscott/go-nfs" | ||
| "github.com/willscott/go-nfs/helpers" | ||
| ) | ||
|
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| func Serve(ctx context.Context, errChan chan string, address, port string, driveLetter string) { | ||
| var listener net.Listener | ||
| listening := false | ||
|
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| listen := func() { | ||
| var err error | ||
| listenAt := fmt.Sprintf("%s:%s", address, port) | ||
| listener, err = net.Listen("tcp", listenAt) | ||
| if err != nil { | ||
| errChan <- fmt.Sprintf("Port is already in use! Failed to listen on %s: %v", listenAt, err) | ||
| return | ||
| } | ||
| listening = true | ||
| } | ||
|
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| listen() | ||
|
|
||
| for !listening { | ||
| retryWait := utils.WaitChan(time.Second * 5) | ||
| select { | ||
| case <-ctx.Done(): | ||
| return | ||
| case <-retryWait: | ||
| listen() | ||
| } | ||
| } | ||
|
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| defer listener.Close() | ||
|
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| snapshot, err := snapshots.Snapshot(driveLetter) | ||
| if err != nil { | ||
| errChan <- fmt.Sprintf("failed to initialize snapshot: %v", err) | ||
| return | ||
| } | ||
| defer snapshot.Close() | ||
|
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| fs := osfs.New(snapshot.SnapshotPath) | ||
| readOnlyFs := NewROFS(fs) | ||
| nfsHandler := helpers.NewNullAuthHandler(readOnlyFs) | ||
|
|
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| go func() { | ||
| for { | ||
| go func() { | ||
| err := nfs.Serve(listener, nfsHandler) | ||
| if err != nil { | ||
| errChan <- fmt.Sprintf("NFS server error: %v", err) | ||
| } | ||
| }() | ||
|
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| select { | ||
| case <-ctx.Done(): | ||
| listener.Close() | ||
| return | ||
| case <-errChan: | ||
| } | ||
| } | ||
| }() | ||
| } |