56 lines
1.4 KiB
Go
56 lines
1.4 KiB
Go
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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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"errors"
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"os"
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"github.com/willscott/go-nfs-client/nfs/xdr"
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)
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func onReadLink(ctx context.Context, w *response, userHandle Handler) error {
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w.errorFmt = opAttrErrorFormatter
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handle, err := xdr.ReadOpaque(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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fs, path, err := userHandle.FromHandle(handle)
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if err != nil {
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return &NFSStatusError{NFSStatusStale, err}
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}
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out, err := fs.Readlink(ctx, fs.Join(path...))
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if err != nil {
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if info, err := fs.Stat(ctx, fs.Join(path...)); err == nil {
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if info.Mode()&os.ModeSymlink == 0 {
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return &NFSStatusError{NFSStatusInval, err}
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}
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}
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if os.IsNotExist(err) {
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return &NFSStatusError{NFSStatusNoEnt, err}
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}
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if errors.Is(err, context.DeadlineExceeded) {
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return &NFSStatusError{NFSStatusJukebox, err}
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}
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return &NFSStatusError{NFSStatusAccess, err}
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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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if err := WritePostOpAttrs(writer, tryStat(ctx, fs, path)); err != nil {
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return &NFSStatusError{NFSStatusServerFault, err}
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}
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if err := xdr.Write(writer, out); 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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