7.8. POSIX Errors

getErrorCode :: IO ErrorCode

getErrorCode returns the current value of the external variable errno. It never fails.

setErrorCode :: ErrorCode -> IO ()

setErrorCode err sets the external variable errno to err. It never fails.

noError :: ErrorCode noError = 0 argumentListTooLong, e2BIG :: ErrorCode badFd, eBADF :: ErrorCode brokenPipe, ePIPE :: ErrorCode directoryNotEmpty, eNOTEMPTY :: ErrorCode execFormatError, eNOEXEC :: ErrorCode fileAlreadyExists, eEXIST :: ErrorCode fileTooLarge, eFBIG :: ErrorCode filenameTooLong, eNAMETOOLONG :: ErrorCode improperLink, eXDEV :: ErrorCode inappropriateIOControlOperation, eNOTTY :: ErrorCode inputOutputError, eIO :: ErrorCode interruptedOperation, eINTR :: ErrorCode invalidArgument, eINVAL :: ErrorCode invalidSeek, eSPIPE :: ErrorCode isADirectory, eISDIR :: ErrorCode noChildProcess, eCHILD :: ErrorCode noLocksAvailable, eNOLCK :: ErrorCode noSpaceLeftOnDevice, eNOSPC :: ErrorCode noSuchOperationOnDevice, eNODEV :: ErrorCode noSuchDeviceOrAddress, eNXIO :: ErrorCode noSuchFileOrDirectory, eNOENT :: ErrorCode noSuchProcess, eSRCH :: ErrorCode notADirectory, eNOTDIR :: ErrorCode notEnoughMemory, eNOMEM :: ErrorCode operationNotImplemented, eNOSYS :: ErrorCode operationNotPermitted, ePERM :: ErrorCode permissionDenied, eACCES :: ErrorCode readOnlyFileSystem, eROFS :: ErrorCode resourceBusy, eBUSY :: ErrorCode resourceDeadlockAvoided, eDEADLK :: ErrorCode resourceTemporarilyUnavailable, eAGAIN :: ErrorCode tooManyLinks, eMLINK :: ErrorCode tooManyOpenFiles, eMFILE :: ErrorCode tooManyOpenFilesInSystem, eNFILE :: ErrorCode