109 lines
2.8 KiB
C
109 lines
2.8 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
#ifndef _ASM_GENERIC_TERMIOS_H
|
||
|
|
#define _ASM_GENERIC_TERMIOS_H
|
||
|
|
|
||
|
|
|
||
|
|
#include <linux/uaccess.h>
|
||
|
|
#include <uapi/asm-generic/termios.h>
|
||
|
|
|
||
|
|
/* intr=^C quit=^\ erase=del kill=^U
|
||
|
|
eof=^D vtime=\0 vmin=\1 sxtc=\0
|
||
|
|
start=^Q stop=^S susp=^Z eol=\0
|
||
|
|
reprint=^R discard=^U werase=^W lnext=^V
|
||
|
|
eol2=\0
|
||
|
|
*/
|
||
|
|
#define INIT_C_CC "\003\034\177\025\004\0\1\0\021\023\032\0\022\017\027\026\0"
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Translate a "termio" structure into a "termios". Ugh.
|
||
|
|
*/
|
||
|
|
static inline int user_termio_to_kernel_termios(struct ktermios *termios,
|
||
|
|
const struct termio __user *termio)
|
||
|
|
{
|
||
|
|
unsigned short tmp;
|
||
|
|
|
||
|
|
if (get_user(tmp, &termio->c_iflag) < 0)
|
||
|
|
goto fault;
|
||
|
|
termios->c_iflag = (0xffff0000 & termios->c_iflag) | tmp;
|
||
|
|
|
||
|
|
if (get_user(tmp, &termio->c_oflag) < 0)
|
||
|
|
goto fault;
|
||
|
|
termios->c_oflag = (0xffff0000 & termios->c_oflag) | tmp;
|
||
|
|
|
||
|
|
if (get_user(tmp, &termio->c_cflag) < 0)
|
||
|
|
goto fault;
|
||
|
|
termios->c_cflag = (0xffff0000 & termios->c_cflag) | tmp;
|
||
|
|
|
||
|
|
if (get_user(tmp, &termio->c_lflag) < 0)
|
||
|
|
goto fault;
|
||
|
|
termios->c_lflag = (0xffff0000 & termios->c_lflag) | tmp;
|
||
|
|
|
||
|
|
if (get_user(termios->c_line, &termio->c_line) < 0)
|
||
|
|
goto fault;
|
||
|
|
|
||
|
|
if (copy_from_user(termios->c_cc, termio->c_cc, NCC) != 0)
|
||
|
|
goto fault;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
fault:
|
||
|
|
return -EFAULT;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Translate a "termios" structure into a "termio". Ugh.
|
||
|
|
*/
|
||
|
|
static inline int kernel_termios_to_user_termio(struct termio __user *termio,
|
||
|
|
struct ktermios *termios)
|
||
|
|
{
|
||
|
|
if (put_user(termios->c_iflag, &termio->c_iflag) < 0 ||
|
||
|
|
put_user(termios->c_oflag, &termio->c_oflag) < 0 ||
|
||
|
|
put_user(termios->c_cflag, &termio->c_cflag) < 0 ||
|
||
|
|
put_user(termios->c_lflag, &termio->c_lflag) < 0 ||
|
||
|
|
put_user(termios->c_line, &termio->c_line) < 0 ||
|
||
|
|
copy_to_user(termio->c_cc, termios->c_cc, NCC) != 0)
|
||
|
|
return -EFAULT;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef TCGETS2
|
||
|
|
static inline int user_termios_to_kernel_termios(struct ktermios *k,
|
||
|
|
struct termios2 __user *u)
|
||
|
|
{
|
||
|
|
return copy_from_user(k, u, sizeof(struct termios2));
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int kernel_termios_to_user_termios(struct termios2 __user *u,
|
||
|
|
struct ktermios *k)
|
||
|
|
{
|
||
|
|
return copy_to_user(u, k, sizeof(struct termios2));
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int user_termios_to_kernel_termios_1(struct ktermios *k,
|
||
|
|
struct termios __user *u)
|
||
|
|
{
|
||
|
|
return copy_from_user(k, u, sizeof(struct termios));
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int kernel_termios_to_user_termios_1(struct termios __user *u,
|
||
|
|
struct ktermios *k)
|
||
|
|
{
|
||
|
|
return copy_to_user(u, k, sizeof(struct termios));
|
||
|
|
}
|
||
|
|
#else /* TCGETS2 */
|
||
|
|
static inline int user_termios_to_kernel_termios(struct ktermios *k,
|
||
|
|
struct termios __user *u)
|
||
|
|
{
|
||
|
|
return copy_from_user(k, u, sizeof(struct termios));
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int kernel_termios_to_user_termios(struct termios __user *u,
|
||
|
|
struct ktermios *k)
|
||
|
|
{
|
||
|
|
return copy_to_user(u, k, sizeof(struct termios));
|
||
|
|
}
|
||
|
|
#endif /* TCGETS2 */
|
||
|
|
|
||
|
|
#endif /* _ASM_GENERIC_TERMIOS_H */
|