| 1 | #ifndef _NO_TTYNAME |
|---|
| 2 | /* |
|---|
| 3 | * Copyright (c) 1988 The Regents of the University of California. |
|---|
| 4 | * All rights reserved. |
|---|
| 5 | * |
|---|
| 6 | * Redistribution and use in source and binary forms, with or without |
|---|
| 7 | * modification, are permitted provided that the following conditions |
|---|
| 8 | * are met: |
|---|
| 9 | * 1. Redistributions of source code must retain the above copyright |
|---|
| 10 | * notice, this list of conditions and the following disclaimer. |
|---|
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
|---|
| 12 | * notice, this list of conditions and the following disclaimer in the |
|---|
| 13 | * documentation and/or other materials provided with the distribution. |
|---|
| 14 | * 4. Neither the name of the University nor the names of its contributors |
|---|
| 15 | * may be used to endorse or promote products derived from this software |
|---|
| 16 | * without specific prior written permission. |
|---|
| 17 | * |
|---|
| 18 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
|---|
| 19 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
|---|
| 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
|---|
| 21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
|---|
| 22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
|---|
| 23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
|---|
| 24 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
|---|
| 25 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
|---|
| 26 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
|---|
| 27 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
|---|
| 28 | * SUCH DAMAGE. |
|---|
| 29 | */ |
|---|
| 30 | |
|---|
| 31 | #include "ttyname.h" |
|---|
| 32 | |
|---|
| 33 | #include <dirent.h> |
|---|
| 34 | #include <unistd.h> |
|---|
| 35 | #include <paths.h> |
|---|
| 36 | #include <errno.h> |
|---|
| 37 | |
|---|
| 38 | static char ttyname_buf[TTYNAME_BUFSIZE] = _PATH_DEV; |
|---|
| 39 | |
|---|
| 40 | /* |
|---|
| 41 | * ttyname() - POSIX 1003.1b 4.7.2 - Determine Terminal Device Name |
|---|
| 42 | */ |
|---|
| 43 | char * |
|---|
| 44 | ttyname (int fd) |
|---|
| 45 | { |
|---|
| 46 | register int fail; |
|---|
| 47 | register char *ret=NULL; |
|---|
| 48 | fail = ttyname_r( fd, ttyname_buf, sizeof(ttyname_buf) ); |
|---|
| 49 | if ( fail ) errno = fail; |
|---|
| 50 | else ret = ttyname_buf; |
|---|
| 51 | return ret; |
|---|
| 52 | } |
|---|
| 53 | #endif /* !_NO_TTYNAME */ |
|---|
