1 /* Copyright (C) 1994-2022 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 4 The GNU C Library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 2.1 of the License, or (at your option) any later version. 8 9 The GNU C Library is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library; if not, see 16 <https://www.gnu.org/licenses/>. */ 17 18 #include <errno.h> 19 #include <unistd.h> 20 #include <hurd.h> 21 #include <hurd/term.h> 22 #include <hurd/fd.h> 23 24 /* Return the pathname of the terminal FD is open on, or NULL on errors. 25 The returned storage is good only until the next call to this function. */ 26 char * ttyname(int fd)27ttyname (int fd) 28 { 29 error_t err; 30 static char nodename[1024]; /* XXX */ 31 32 nodename[0] = '\0'; 33 if (err = HURD_DPORT_USE (fd, __term_get_nodename (port, nodename))) 34 { 35 if (err == MIG_BAD_ID || err == EOPNOTSUPP) 36 err = ENOTTY; 37 return __hurd_dfail (fd, err), NULL; 38 } 39 40 return nodename; 41 } 42