splice is documented to return EBADF if "One or both file descriptors are not valid, or do not have proper read-write mode."
So it seems surprising to me that you can call it when the out fd is not writable? But I didn't retain the information about the vulnerability, so I'm missing something. There was something about copy on write, IIRC?
alt Hacker News
splice is documented to return EBADF if "One or both file descriptors are not valid, or do not have proper read-write mode."
So it seems surprising to me that you can call it when the out fd is not writable? But I didn't retain the information about the vulnerability, so I'm missing something. There was something about copy on write, IIRC?