116 lines
3.6 KiB
C
116 lines
3.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include <linux/termios_internal.h>
|
|
|
|
/*
|
|
* c_cc characters in the termio structure. Oh, how I love being
|
|
* backwardly compatible. Notice that character 4 and 5 are
|
|
* interpreted differently depending on whether ICANON is set in
|
|
* c_lflag. If it's set, they are used as _VEOF and _VEOL, otherwise
|
|
* as _VMIN and V_TIME. This is for compatibility with OSF/1 (which
|
|
* is compatible with sysV)...
|
|
*/
|
|
#define _VMIN 4
|
|
#define _VTIME 5
|
|
|
|
int kernel_termios_to_user_termio(struct termio __user *termio,
|
|
struct ktermios *termios)
|
|
{
|
|
struct termio v;
|
|
memset(&v, 0, sizeof(struct termio));
|
|
v.c_iflag = termios->c_iflag;
|
|
v.c_oflag = termios->c_oflag;
|
|
v.c_cflag = termios->c_cflag;
|
|
v.c_lflag = termios->c_lflag;
|
|
v.c_line = termios->c_line;
|
|
memcpy(v.c_cc, termios->c_cc, NCC);
|
|
if (!(v.c_lflag & ICANON)) {
|
|
v.c_cc[_VMIN] = termios->c_cc[VMIN];
|
|
v.c_cc[_VTIME] = termios->c_cc[VTIME];
|
|
}
|
|
return copy_to_user(termio, &v, sizeof(struct termio));
|
|
}
|
|
|
|
int user_termios_to_kernel_termios(struct ktermios *k,
|
|
struct termios2 __user *u)
|
|
{
|
|
int err;
|
|
err = get_user(k->c_iflag, &u->c_iflag);
|
|
err |= get_user(k->c_oflag, &u->c_oflag);
|
|
err |= get_user(k->c_cflag, &u->c_cflag);
|
|
err |= get_user(k->c_lflag, &u->c_lflag);
|
|
err |= get_user(k->c_line, &u->c_line);
|
|
err |= copy_from_user(k->c_cc, u->c_cc, NCCS);
|
|
if (k->c_lflag & ICANON) {
|
|
err |= get_user(k->c_cc[VEOF], &u->c_cc[VEOF]);
|
|
err |= get_user(k->c_cc[VEOL], &u->c_cc[VEOL]);
|
|
} else {
|
|
err |= get_user(k->c_cc[VMIN], &u->c_cc[_VMIN]);
|
|
err |= get_user(k->c_cc[VTIME], &u->c_cc[_VTIME]);
|
|
}
|
|
err |= get_user(k->c_ispeed, &u->c_ispeed);
|
|
err |= get_user(k->c_ospeed, &u->c_ospeed);
|
|
return err;
|
|
}
|
|
|
|
int kernel_termios_to_user_termios(struct termios2 __user *u,
|
|
struct ktermios *k)
|
|
{
|
|
int err;
|
|
err = put_user(k->c_iflag, &u->c_iflag);
|
|
err |= put_user(k->c_oflag, &u->c_oflag);
|
|
err |= put_user(k->c_cflag, &u->c_cflag);
|
|
err |= put_user(k->c_lflag, &u->c_lflag);
|
|
err |= put_user(k->c_line, &u->c_line);
|
|
err |= copy_to_user(u->c_cc, k->c_cc, NCCS);
|
|
if (!(k->c_lflag & ICANON)) {
|
|
err |= put_user(k->c_cc[VMIN], &u->c_cc[_VMIN]);
|
|
err |= put_user(k->c_cc[VTIME], &u->c_cc[_VTIME]);
|
|
} else {
|
|
err |= put_user(k->c_cc[VEOF], &u->c_cc[VEOF]);
|
|
err |= put_user(k->c_cc[VEOL], &u->c_cc[VEOL]);
|
|
}
|
|
err |= put_user(k->c_ispeed, &u->c_ispeed);
|
|
err |= put_user(k->c_ospeed, &u->c_ospeed);
|
|
return err;
|
|
}
|
|
|
|
int user_termios_to_kernel_termios_1(struct ktermios *k,
|
|
struct termios __user *u)
|
|
{
|
|
int err;
|
|
err = get_user(k->c_iflag, &u->c_iflag);
|
|
err |= get_user(k->c_oflag, &u->c_oflag);
|
|
err |= get_user(k->c_cflag, &u->c_cflag);
|
|
err |= get_user(k->c_lflag, &u->c_lflag);
|
|
err |= get_user(k->c_line, &u->c_line);
|
|
err |= copy_from_user(k->c_cc, u->c_cc, NCCS);
|
|
if (k->c_lflag & ICANON) {
|
|
err |= get_user(k->c_cc[VEOF], &u->c_cc[VEOF]);
|
|
err |= get_user(k->c_cc[VEOL], &u->c_cc[VEOL]);
|
|
} else {
|
|
err |= get_user(k->c_cc[VMIN], &u->c_cc[_VMIN]);
|
|
err |= get_user(k->c_cc[VTIME], &u->c_cc[_VTIME]);
|
|
}
|
|
return err;
|
|
}
|
|
|
|
int kernel_termios_to_user_termios_1(struct termios __user *u,
|
|
struct ktermios *k)
|
|
{
|
|
int err;
|
|
err = put_user(k->c_iflag, &u->c_iflag);
|
|
err |= put_user(k->c_oflag, &u->c_oflag);
|
|
err |= put_user(k->c_cflag, &u->c_cflag);
|
|
err |= put_user(k->c_lflag, &u->c_lflag);
|
|
err |= put_user(k->c_line, &u->c_line);
|
|
err |= copy_to_user(u->c_cc, k->c_cc, NCCS);
|
|
if (!(k->c_lflag & ICANON)) {
|
|
err |= put_user(k->c_cc[VMIN], &u->c_cc[_VMIN]);
|
|
err |= put_user(k->c_cc[VTIME], &u->c_cc[_VTIME]);
|
|
} else {
|
|
err |= put_user(k->c_cc[VEOF], &u->c_cc[VEOF]);
|
|
err |= put_user(k->c_cc[VEOL], &u->c_cc[VEOL]);
|
|
}
|
|
return err;
|
|
}
|