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Re: General termios


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


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