tstor/pkg/go-nfs/nfs_onaccess.go

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2024-03-28 13:09:42 +00:00
package nfs
import (
"bytes"
"context"
billy "github.com/go-git/go-billy/v5"
"github.com/willscott/go-nfs-client/nfs/xdr"
)
func onAccess(ctx context.Context, w *response, userHandle Handler) error {
w.errorFmt = opAttrErrorFormatter
roothandle, err := xdr.ReadOpaque(w.req.Body)
if err != nil {
return &NFSStatusError{NFSStatusInval, err}
}
fs, path, err := userHandle.FromHandle(roothandle)
if err != nil {
return &NFSStatusError{NFSStatusStale, err}
}
mask, err := xdr.ReadUint32(w.req.Body)
if err != nil {
return &NFSStatusError{NFSStatusInval, err}
}
writer := bytes.NewBuffer([]byte{})
if err := xdr.Write(writer, uint32(NFSStatusOk)); err != nil {
return &NFSStatusError{NFSStatusServerFault, err}
}
if err := WritePostOpAttrs(writer, tryStat(ctx, fs, path)); err != nil {
return &NFSStatusError{NFSStatusServerFault, err}
}
if !CapabilityCheck(fs, billy.WriteCapability) {
mask = mask & (1 | 2 | 0x20)
}
if err := xdr.Write(writer, mask); err != nil {
return &NFSStatusError{NFSStatusServerFault, err}
}
if err := w.Write(writer.Bytes()); err != nil {
return &NFSStatusError{NFSStatusServerFault, err}
}
return nil
}