too large filename too long function not supported host unreachable identifier removed illegal byte sequence inappropriate io control operation interrupted invalid seek io error is a directory message size network down network reset network unreachable no buffer space no child process no link no lock available no message available no message no protocol option no space on device no stream resources no such device or address no such device no such file or directory not a directory not a socket not a stream not connected not supported operation canceled operation in progress operation not supported operation would block owner dead permission denied protocol error protocol not supported read only file system result out of range state not recoverable stream timeout text file busy timed out too many files open in system too many files open too many links too many symbolic link levels value too large wrong protocol type unknown error