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/arch/mips/include/asm/termios.h

http://github.com/mirrors/linux
C Header | 105 lines | 66 code | 18 blank | 21 comment | 6 complexity | 03aef8af660b0aacec19b21d20d05a6e MD5 | raw file
  1/*
  2 * This file is subject to the terms and conditions of the GNU General Public
  3 * License.  See the file "COPYING" in the main directory of this archive
  4 * for more details.
  5 *
  6 * Copyright (C) 1995, 1996, 2000, 2001 by Ralf Baechle
  7 * Copyright (C) 2000, 2001 Silicon Graphics, Inc.
  8 */
  9#ifndef _ASM_TERMIOS_H
 10#define _ASM_TERMIOS_H
 11
 12#include <linux/uaccess.h>
 13#include <uapi/asm/termios.h>
 14
 15/*
 16 *	intr=^C		quit=^\		erase=del	kill=^U
 17 *	vmin=\1		vtime=\0	eol2=\0		swtc=\0
 18 *	start=^Q	stop=^S		susp=^Z		vdsusp=
 19 *	reprint=^R	discard=^U	werase=^W	lnext=^V
 20 *	eof=^D		eol=\0
 21 */
 22#define INIT_C_CC "\003\034\177\025\1\0\0\0\021\023\032\0\022\017\027\026\004\0"
 23
 24#include <linux/string.h>
 25
 26/*
 27 * Translate a "termio" structure into a "termios". Ugh.
 28 */
 29static inline int user_termio_to_kernel_termios(struct ktermios *termios,
 30	struct termio __user *termio)
 31{
 32	unsigned short iflag, oflag, cflag, lflag;
 33	unsigned int err;
 34
 35	if (!access_ok(termio, sizeof(struct termio)))
 36		return -EFAULT;
 37
 38	err = __get_user(iflag, &termio->c_iflag);
 39	termios->c_iflag = (termios->c_iflag & 0xffff0000) | iflag;
 40	err |=__get_user(oflag, &termio->c_oflag);
 41	termios->c_oflag = (termios->c_oflag & 0xffff0000) | oflag;
 42	err |=__get_user(cflag, &termio->c_cflag);
 43	termios->c_cflag = (termios->c_cflag & 0xffff0000) | cflag;
 44	err |=__get_user(lflag, &termio->c_lflag);
 45	termios->c_lflag = (termios->c_lflag & 0xffff0000) | lflag;
 46	err |=__get_user(termios->c_line, &termio->c_line);
 47	if (err)
 48		return -EFAULT;
 49
 50	if (__copy_from_user(termios->c_cc, termio->c_cc, NCC))
 51		return -EFAULT;
 52
 53	return 0;
 54}
 55
 56/*
 57 * Translate a "termios" structure into a "termio". Ugh.
 58 */
 59static inline int kernel_termios_to_user_termio(struct termio __user *termio,
 60	struct ktermios *termios)
 61{
 62	int err;
 63
 64	if (!access_ok(termio, sizeof(struct termio)))
 65		return -EFAULT;
 66
 67	err = __put_user(termios->c_iflag, &termio->c_iflag);
 68	err |= __put_user(termios->c_oflag, &termio->c_oflag);
 69	err |= __put_user(termios->c_cflag, &termio->c_cflag);
 70	err |= __put_user(termios->c_lflag, &termio->c_lflag);
 71	err |= __put_user(termios->c_line, &termio->c_line);
 72	if (err)
 73		return -EFAULT;
 74
 75	if (__copy_to_user(termio->c_cc, termios->c_cc, NCC))
 76		return -EFAULT;
 77
 78	return 0;
 79}
 80
 81static inline int user_termios_to_kernel_termios(struct ktermios __user *k,
 82	struct termios2 *u)
 83{
 84	return copy_from_user(k, u, sizeof(struct termios2)) ? -EFAULT : 0;
 85}
 86
 87static inline int kernel_termios_to_user_termios(struct termios2 __user *u,
 88	struct ktermios *k)
 89{
 90	return copy_to_user(u, k, sizeof(struct termios2)) ? -EFAULT : 0;
 91}
 92
 93static inline int user_termios_to_kernel_termios_1(struct ktermios *k,
 94	struct termios __user *u)
 95{
 96	return copy_from_user(k, u, sizeof(struct termios)) ? -EFAULT : 0;
 97}
 98
 99static inline int kernel_termios_to_user_termios_1(struct termios __user *u,
100	struct ktermios *k)
101{
102	return copy_to_user(u, k, sizeof(struct termios)) ? -EFAULT : 0;
103}
104
105#endif /* _ASM_TERMIOS_H */