General termios

[Shaun Jackman]

On 6/2/06, Shaun Jackman <sjackman@gmail.com> wrote:
> Is it better to leave the function undefined, or define the function
> to return ENOSYS?

On second thought, I prefer leaving the functions undefined if the
ioctl isn't provided.

Cheers,
Shaun

Index: libc/sys/linux/termios.c
===================================================================
RCS file: /cvs/src/src/newlib/libc/sys/linux/termios.c,v
retrieving revision 1.3
diff -u -r1.3 termios.c
--- libc/sys/linux/termios.c	26 Aug 2002 18:56:08 -0000	1.3
+++ libc/sys/linux/termios.c	2 Jun 2006 16:18:27 -0000
@@ -9,13 +9,16 @@
 #include <sys/ioctl.h>


+#ifdef TCGETS
 int
 tcgetattr(int fd,struct termios *termios_p)
 {
   return ioctl(fd,TCGETS,termios_p);
 }
+#endif


+#ifdef TCSETS
 int
 tcsetattr(int fd,int optional_actions,const struct termios *termios_p)
 {
@@ -37,8 +40,10 @@
     }
   return ioctl(fd,cmd,termios_p);
 }
+#endif

 #if !defined(_ELIX_LEVEL) || _ELIX_LEVEL >= 4
+# ifdef TIOCGPGRP
 pid_t
 tcgetpgrp(int fd)
 {
@@ -48,25 +53,31 @@
     return (pid_t)-1;
   return (pid_t)p;
 }
+# endif


+# ifdef TIOCSPGRP
 int
 tcsetpgrp(int fd, pid_t pid)
 {
   int p = (int)pid;
   return ioctl(fd,TIOCSPGRP,&p);
 }
+# endif
 #endif /* !_ELIX_LEVEL || _ELIX_LEVEL >= 4 */

+#ifdef TCXONC
 int
 tcflow (int fd, int action)
 {
   return ioctl (fd, TCXONC, action);
 }
+#endif

+#ifdef TCFLSH
 int
 tcflush (int fd, int queue_selector)
 {
   return ioctl (fd, TCFLSH, queue_selector);
 }
-
+#endif