1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_GENERIC_TERMIOS_H
3 #define _ASM_GENERIC_TERMIOS_H
6 #include <linux/uaccess.h>
7 #include <uapi/asm-generic/termios.h>
9 /* intr=^C quit=^\ erase=del kill=^U
10 eof=^D vtime=\0 vmin=\1 sxtc=\0
11 start=^Q stop=^S susp=^Z eol=\0
12 reprint=^R discard=^U werase=^W lnext=^V
15 #define INIT_C_CC "\003\034\177\025\004\0\1\0\021\023\032\0\022\017\027\026\0"
18 * Translate a "termio" structure into a "termios". Ugh.
20 static inline int user_termio_to_kernel_termios(struct ktermios *termios,
21 const struct termio __user *termio)
25 if (get_user(tmp, &termio->c_iflag) < 0)
27 termios->c_iflag = (0xffff0000 & termios->c_iflag) | tmp;
29 if (get_user(tmp, &termio->c_oflag) < 0)
31 termios->c_oflag = (0xffff0000 & termios->c_oflag) | tmp;
33 if (get_user(tmp, &termio->c_cflag) < 0)
35 termios->c_cflag = (0xffff0000 & termios->c_cflag) | tmp;
37 if (get_user(tmp, &termio->c_lflag) < 0)
39 termios->c_lflag = (0xffff0000 & termios->c_lflag) | tmp;
41 if (get_user(termios->c_line, &termio->c_line) < 0)
44 if (copy_from_user(termios->c_cc, termio->c_cc, NCC) != 0)
54 * Translate a "termios" structure into a "termio". Ugh.
56 static inline int kernel_termios_to_user_termio(struct termio __user *termio,
57 struct ktermios *termios)
59 if (put_user(termios->c_iflag, &termio->c_iflag) < 0 ||
60 put_user(termios->c_oflag, &termio->c_oflag) < 0 ||
61 put_user(termios->c_cflag, &termio->c_cflag) < 0 ||
62 put_user(termios->c_lflag, &termio->c_lflag) < 0 ||
63 put_user(termios->c_line, &termio->c_line) < 0 ||
64 copy_to_user(termio->c_cc, termios->c_cc, NCC) != 0)
71 static inline int user_termios_to_kernel_termios(struct ktermios *k,
72 struct termios2 __user *u)
74 return copy_from_user(k, u, sizeof(struct termios2));
77 static inline int kernel_termios_to_user_termios(struct termios2 __user *u,
80 return copy_to_user(u, k, sizeof(struct termios2));
83 static inline int user_termios_to_kernel_termios_1(struct ktermios *k,
84 struct termios __user *u)
86 return copy_from_user(k, u, sizeof(struct termios));
89 static inline int kernel_termios_to_user_termios_1(struct termios __user *u,
92 return copy_to_user(u, k, sizeof(struct termios));
95 static inline int user_termios_to_kernel_termios(struct ktermios *k,
96 struct termios __user *u)
98 return copy_from_user(k, u, sizeof(struct termios));
101 static inline int kernel_termios_to_user_termios(struct termios __user *u,
104 return copy_to_user(u, k, sizeof(struct termios));
108 #endif /* _ASM_GENERIC_TERMIOS_H */