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glibc  2.9
Functions
tcgetattr.c File Reference
#include <errno.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sysdep.h>
#include <kernel_termios.h>

Go to the source code of this file.

Functions

int __tcgetattr (int fd, struct termios *termios_p)

Function Documentation

int __tcgetattr ( int  fd,
struct termios termios_p 
)

Definition at line 34 of file tcgetattr.c.

{
  struct __kernel_termios k_termios;
  int retval;

  retval = INLINE_SYSCALL (ioctl, 3, fd, TCGETS, &k_termios);

  if (__builtin_expect (retval == 0, 1))
    {
      termios_p->c_iflag = k_termios.c_iflag;
      termios_p->c_oflag = k_termios.c_oflag;
      termios_p->c_cflag = k_termios.c_cflag;
      termios_p->c_lflag = k_termios.c_lflag;
      termios_p->c_line = k_termios.c_line;
#ifdef _HAVE_STRUCT_TERMIOS_C_ISPEED
# ifdef _HAVE_C_ISPEED
      termios_p->c_ispeed = k_termios.c_ispeed;
# else
      termios_p->c_ispeed = k_termios.c_cflag & (CBAUD | CBAUDEX);
# endif
#endif
#ifdef _HAVE_STRUCT_TERMIOS_C_OSPEED
# ifdef _HAVE_C_OSPEED
      termios_p->c_ospeed = k_termios.c_ospeed;
# else
      termios_p->c_ospeed = k_termios.c_cflag & (CBAUD | CBAUDEX);
# endif
#endif
      if (sizeof (cc_t) == 1 || _POSIX_VDISABLE == 0
         || (unsigned char) _POSIX_VDISABLE == (unsigned char) -1)
       memset (__mempcpy (&termios_p->c_cc[0], &k_termios.c_cc[0],
                        __KERNEL_NCCS * sizeof (cc_t)),
              _POSIX_VDISABLE, (NCCS - __KERNEL_NCCS) * sizeof (cc_t));
      else
       {
         memcpy (&termios_p->c_cc[0], &k_termios.c_cc[0],
                __KERNEL_NCCS * sizeof (cc_t));

         for (size_t cnt = __KERNEL_NCCS; cnt < NCCS; ++cnt)
           termios_p->c_cc[cnt] = _POSIX_VDISABLE;
       }
    }

  return retval;
}

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