small refactor*
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parent
b6b541e050
commit
24a4d30275
232 changed files with 2164 additions and 1906 deletions
server/pkg/go-nfs
158
server/pkg/go-nfs/nfs_onmknod.go
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158
server/pkg/go-nfs/nfs_onmknod.go
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@ -0,0 +1,158 @@
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package nfs
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import (
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"bytes"
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"context"
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"os"
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billy "github.com/go-git/go-billy/v5"
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"github.com/willscott/go-nfs-client/nfs/xdr"
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)
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type nfs_ftype int32
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const (
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FTYPE_NF3REG nfs_ftype = 1
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FTYPE_NF3DIR nfs_ftype = 2
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FTYPE_NF3BLK nfs_ftype = 3
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FTYPE_NF3CHR nfs_ftype = 4
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FTYPE_NF3LNK nfs_ftype = 5
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FTYPE_NF3SOCK nfs_ftype = 6
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FTYPE_NF3FIFO nfs_ftype = 7
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)
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// Backing billy.FS doesn't support creation of
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// char, block, socket, or fifo pipe nodes
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func onMknod(ctx context.Context, w *response, userHandle Handler) error {
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w.errorFmt = wccDataErrorFormatter
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obj := DirOpArg{}
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err := xdr.Read(w.req.Body, &obj)
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if err != nil {
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return &NFSStatusError{NFSStatusInval, err}
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}
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ftype, err := xdr.ReadUint32(w.req.Body)
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if err != nil {
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return &NFSStatusError{NFSStatusInval, err}
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}
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// see if the filesystem supports mknod
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fs, path, err := userHandle.FromHandle(ctx, obj.Handle)
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if err != nil {
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return &NFSStatusError{NFSStatusStale, err}
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}
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if !CapabilityCheck(fs, billy.WriteCapability) {
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return &NFSStatusError{NFSStatusROFS, os.ErrPermission}
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}
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c := userHandle.Change(fs)
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if c == nil {
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return &NFSStatusError{NFSStatusAccess, os.ErrPermission}
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}
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cu, ok := c.(UnixChange)
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if !ok {
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return &NFSStatusError{NFSStatusAccess, os.ErrPermission}
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}
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if len(string(obj.Filename)) > PathNameMax {
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return &NFSStatusError{NFSStatusNameTooLong, os.ErrInvalid}
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}
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newFilePath := fs.Join(append(path, string(obj.Filename))...)
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if _, err := fs.Stat(ctx, newFilePath); err == nil {
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return &NFSStatusError{NFSStatusExist, os.ErrExist}
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}
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parent, err := fs.Stat(ctx, fs.Join(path...))
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if err != nil {
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return &NFSStatusError{NFSStatusAccess, err}
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} else if !parent.IsDir() {
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return &NFSStatusError{NFSStatusNotDir, nil}
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}
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fp := userHandle.ToHandle(ctx, fs, append(path, string(obj.Filename)))
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switch nfs_ftype(ftype) {
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case FTYPE_NF3CHR:
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case FTYPE_NF3BLK:
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// read devicedata3 = {sattr3, specdata3}
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attrs, err := ReadSetFileAttributes(w.req.Body)
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if err != nil {
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return &NFSStatusError{NFSStatusInval, err}
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}
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specData1, err := xdr.ReadUint32(w.req.Body)
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if err != nil {
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return &NFSStatusError{NFSStatusInval, err}
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}
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specData2, err := xdr.ReadUint32(w.req.Body)
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if err != nil {
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return &NFSStatusError{NFSStatusInval, err}
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}
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err = cu.Mknod(ctx, newFilePath, uint32(attrs.Mode(parent.Mode())), specData1, specData2)
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if err != nil {
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return &NFSStatusError{NFSStatusAccess, err}
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}
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if err = attrs.Apply(ctx, cu, fs, newFilePath); err != nil {
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return &NFSStatusError{NFSStatusServerFault, err}
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}
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case FTYPE_NF3SOCK:
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// read sattr3
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attrs, err := ReadSetFileAttributes(w.req.Body)
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if err != nil {
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return &NFSStatusError{NFSStatusInval, err}
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}
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if err := cu.Socket(ctx, newFilePath); err != nil {
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return &NFSStatusError{NFSStatusAccess, err}
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}
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if err = attrs.Apply(ctx, cu, fs, newFilePath); err != nil {
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return &NFSStatusError{NFSStatusServerFault, err}
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}
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case FTYPE_NF3FIFO:
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// read sattr3
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attrs, err := ReadSetFileAttributes(w.req.Body)
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if err != nil {
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return &NFSStatusError{NFSStatusInval, err}
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}
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err = cu.Mkfifo(ctx, newFilePath, uint32(attrs.Mode(parent.Mode())))
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if err != nil {
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return &NFSStatusError{NFSStatusAccess, err}
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}
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if err = attrs.Apply(ctx, cu, fs, newFilePath); err != nil {
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return &NFSStatusError{NFSStatusServerFault, err}
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}
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default:
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return &NFSStatusError{NFSStatusBadType, os.ErrInvalid}
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// end of input.
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}
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writer := bytes.NewBuffer([]byte{})
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if err := xdr.Write(writer, uint32(NFSStatusOk)); err != nil {
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return &NFSStatusError{NFSStatusServerFault, err}
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}
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// "handle follows"
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if err := xdr.Write(writer, uint32(1)); err != nil {
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return &NFSStatusError{NFSStatusServerFault, err}
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}
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// fh3
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if err := xdr.Write(writer, fp); err != nil {
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return &NFSStatusError{NFSStatusServerFault, err}
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}
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// attr
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if err := WritePostOpAttrs(writer, tryStat(ctx, fs, append(path, string(obj.Filename)))); err != nil {
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return &NFSStatusError{NFSStatusServerFault, err}
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}
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// wcc
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if err := WriteWcc(writer, nil, tryStat(ctx, fs, path)); err != nil {
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return &NFSStatusError{NFSStatusServerFault, err}
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}
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if err := w.Write(writer.Bytes()); err != nil {
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return &NFSStatusError{NFSStatusServerFault, err}
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}
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return nil
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}
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