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per_rpc_transport_credentials_notlinux.go
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/
per_rpc_transport_credentials_notlinux.go
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// Copyright (c) 2020 Cisco and/or its affiliates.
//
// SPDX-License-Identifier: Apache-2.0
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at:
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build !linux,!windows
package grpcfd
import "os"
func (w *wrapPerRPCCredentials) SendFilename(filename string) <-chan error {
out := make(chan error, 1)
// Note: this will fail in most cases for 'unopenable' files (like unix file sockets). See use of O_PATH in per_rpc_transport_credentials_linux.go for
// the trick that makes this work in Linux
file, err := os.Open(filename) // #nosec
if err != nil {
out <- err
close(out)
return out
}
w.executor.AsyncExec(func() {
if w.FDTransceiver != nil {
go func(in <-chan error, out chan<- error, file *os.File) {
joinErrChs(in, out)
_ = file.Close()
}(w.FDTransceiver.SendFile(file), out, file)
return
}
w.transceiverFuncs = append(w.transceiverFuncs, func(transceiver FDTransceiver) {
go func(in <-chan error, out chan<- error, file *os.File) {
joinErrChs(in, out)
_ = file.Close()
}(transceiver.SendFile(file), out, file)
})
})
return out
}