关于sgttyb这个结构是不是在Linux上没有实现？

wsw

今在分析一些老的Unix程序，在分析到ed的时候，它用到一个结构sgttyb。
grep了一下，发现在glibc的头文件中并没有sgttyb的实现：
/usr/include/sgtty.h

1. 
   
2. /* Copyright (C) 1991, 1992, 1996, 1998, 1999 Free Software Foundation, Inc.
   
3.    This file is part of the GNU C Library.
   
4. 
   
5.    The GNU C Library is free software; you can redistribute it and/or
   
6.    modify it under the terms of the GNU Lesser General Public
   
7.    License as published by the Free Software Foundation; either
   
8.    version 2.1 of the License, or (at your option) any later version.
   
9. 
   
10.    The GNU C Library is distributed in the hope that it will be useful,
    
11.    but WITHOUT ANY WARRANTY; without even the implied warranty of
    
12.    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    
13.    Lesser General Public License for more details.
    
14. 
    
15.    You should have received a copy of the GNU Lesser General Public
    
16.    License along with the GNU C Library; if not, write to the Free
    
17.    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    
18.    02111-1307 USA.  */
    
19. 
    
20. #ifndef _SGTTY_H
    
21. #define _SGTTY_H        1
    
22. 
    
23. #include <features.h>
    
24. 
    
25. #include <sys/ioctl.h>
    
26. 
    
27. /* On some systems this type is not defined by <bits/ioctl-types.h>;
    
28.    in that case, the functions are just stubs that return ENOSYS.  */
    
29. struct sgttyb;
    
30. 
    
31. __BEGIN_DECLS
    
32. 
    
33. /* Fill in *PARAMS with terminal parameters associated with FD.  */
    
34. extern int gtty (int __fd, struct sgttyb *__params) __THROW;
    
35. 
    
36. /* Set the terminal parameters associated with FD to *PARAMS.  */
    
37. extern int stty (int __fd, __const struct sgttyb *__params) __THROW;
    
38. 
    
39. 
    
40. __END_DECLS
    
41. 
    
42. #endif /* sgtty.h  */
    
43. 
    

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man 了一下发现有些函数如gtty在Linux上没实现，还有就是太老了被丢掉了。
不知道sgttyb这个结构是属于什么？那么用什么东西代替？
有没有遇到类似问题的朋友，请不吝赐教！

x11

随便搜了一下

/usr/include$ grep -r sgttyb .
./sgtty.h:struct sgttyb;
./sgtty.h:extern int gtty (int __fd, struct sgttyb *__params) __THROW;
./sgtty.h:extern int stty (int __fd, __const struct sgttyb *__params) __THROW;
./rpcsvc/rex.h:struct sgttyb {
./rpcsvc/rex.h:typedef struct sgttyb sgttyb;
./rpcsvc/rex.h: sgttyb basic;
./rpcsvc/rex.h:extern  bool_t xdr_sgttyb (XDR *, sgttyb*);
./rpcsvc/rex.h:extern bool_t xdr_sgttyb ();
./rpcsvc/rex.x:struct sgttyb {
./rpcsvc/rex.x:    sgttyb basic;    /* standard unix tty flags */
./term.h: * termios/termio/sgttyb interfaces.
./term.h:#define TTY struct sgttyb

看term.h中的说明，应该是用TTY来替代，然后自动根据你系统的情况选用struct termios、struct termio或者struct sgttyb来代换TTY