| // Licensed to the Apache Software Foundation (ASF) under one or more |
| // contributor license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright ownership. |
| // The ASF licenses this file to You 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. |
| |
| package bufpluginexec |
| |
| import ( |
| "errors" |
| "fmt" |
| "os" |
| ) |
| |
| // handlePotentialTooManyFilesError checks if the error is a result of too many files |
| // being open, and if so, modifies the output error with a help message. |
| // |
| // This could potentially go in osextended, but we want to provide a specific help |
| // message referencing StrategyAll, so it is simplest to just put this here for now. |
| func handlePotentialTooManyFilesError(err error) error { |
| if isTooManyFilesError(err) { |
| return fmt.Errorf("%w: %s", err, tooManyFilesHelpMessage) |
| } |
| return err |
| } |
| |
| func isTooManyFilesError(err error) bool { |
| var syscallError *os.SyscallError |
| if errors.As(err, &syscallError) { |
| // This may not actually be correct on other platforms, however the worst case |
| // is that we just don't provide the additional help message. |
| // |
| // Note that syscallError.Syscall has both equalled "pipe" and "fork/exec" in testing, but |
| // we don't match on this as this could be particularly prone to being platform-specific. |
| return syscallError.Err != nil && syscallError.Err.Error() == "too many open files" |
| } |
| return false |
| } |