| failedStatus = "failed::" |
| // The exec package uses this environment variable to communicate |
| // the version of the protocol being used between the parent and child. |
| // It takes care to clear this variable from the child process' |
| // environment as soon as it can, however, there may still be some |
| // situations where an application may need to test for its presence |
| // or ensure that it doesn't appear in a set of environment variables; |
| // exposing the name of this variable is intended to support such |
| VersionVariable = "VEYRON_EXEC_VERSION" |
| // eofChar is written onto the status pipe to signal end-of-file. It |
| // should be the last byte written onto the pipe, before closing it. |
| // This signals to the reader that no more input is coming. This is |
| // needed since we cannot use the closing of the write end of the pipe |
| // to send io.EOF to the reader: since there are two write ends (one in |
| // the parent and one in the child), closing any one of the two is not |
| // going to send io.EOF to the reader. |
| // Since the data coming from the child should be valid utf-8, we pick |
| // one of the invalid utf-8 bytes for this. |
