diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/tcgetattr.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/tcgetattr.c | 47 |
1 files changed, 24 insertions, 23 deletions
diff --git a/sysdeps/unix/sysv/linux/tcgetattr.c b/sysdeps/unix/sysv/linux/tcgetattr.c index 63453ca031..28e3e535ba 100644 --- a/sysdeps/unix/sysv/linux/tcgetattr.c +++ b/sysdeps/unix/sysv/linux/tcgetattr.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1992, 1995, 1997, 1998, 2003 Free Software Foundation, Inc. +/* Copyright (C) 1992,1995,1997,1998,2003,2006 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -40,39 +40,40 @@ __tcgetattr (fd, termios_p) retval = INLINE_SYSCALL (ioctl, 3, fd, TCGETS, &k_termios); - 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; + 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; + termios_p->c_ispeed = k_termios.c_ispeed; # else - termios_p->c_ispeed = k_termios.c_cflag & (CBAUD | CBAUDEX); + 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; + termios_p->c_ospeed = k_termios.c_ospeed; # else - termios_p->c_ospeed = k_termios.c_cflag & (CBAUD | CBAUDEX); + 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 - { - size_t cnt; - - memcpy (&termios_p->c_cc[0], &k_termios.c_cc[0], - __KERNEL_NCCS * sizeof (cc_t)); + 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 (cnt = __KERNEL_NCCS; cnt < NCCS; ++cnt) - termios_p->c_cc[cnt] = _POSIX_VDISABLE; + for (size_t cnt = __KERNEL_NCCS; cnt < NCCS; ++cnt) + termios_p->c_cc[cnt] = _POSIX_VDISABLE; + } } return retval; |