diff options
Diffstat (limited to 'REORG.TODO/sysdeps/unix/sysv/linux/tcgetattr.c')
| -rw-r--r-- | REORG.TODO/sysdeps/unix/sysv/linux/tcgetattr.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/tcgetattr.c b/REORG.TODO/sysdeps/unix/sysv/linux/tcgetattr.c new file mode 100644 index 0000000000..b1d73d042a --- /dev/null +++ b/REORG.TODO/sysdeps/unix/sysv/linux/tcgetattr.c @@ -0,0 +1,79 @@ +/* Copyright (C) 1992-2017 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 + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <errno.h> +#include <string.h> +#include <termios.h> +#include <unistd.h> +#include <sys/ioctl.h> +#include <sys/types.h> +#include <sysdep.h> + +/* The difference here is that the termios structure used in the + kernel is not the same as we use in the libc. Therefore we must + translate it here. */ +#include <kernel_termios.h> + +/* Put the state of FD into *TERMIOS_P. */ +int +__tcgetattr (int fd, struct termios *termios_p) +{ + struct __kernel_termios k_termios; + int retval; + + retval = INLINE_SYSCALL (ioctl, 3, fd, TCGETS, &k_termios); + + if (__glibc_likely (retval == 0)) + { + 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; +} + +weak_alias (__tcgetattr, tcgetattr) |