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git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - include/asm-generic/termios.h
1 /* termios.h: generic termios/termio user copying/translation
4 #ifndef _ASM_GENERIC_TERMIOS_H
5 #define _ASM_GENERIC_TERMIOS_H
7 #include <asm/uaccess.h>
9 #ifndef __ARCH_TERMIO_GETPUT
12 * Translate a "termio" structure into a "termios". Ugh.
14 static inline int user_termio_to_kernel_termios(struct ktermios
*termios
,
15 struct termio __user
*termio
)
19 if (get_user(tmp
, &termio
->c_iflag
) < 0)
21 termios
->c_iflag
= (0xffff0000 & termios
->c_iflag
) | tmp
;
23 if (get_user(tmp
, &termio
->c_oflag
) < 0)
25 termios
->c_oflag
= (0xffff0000 & termios
->c_oflag
) | tmp
;
27 if (get_user(tmp
, &termio
->c_cflag
) < 0)
29 termios
->c_cflag
= (0xffff0000 & termios
->c_cflag
) | tmp
;
31 if (get_user(tmp
, &termio
->c_lflag
) < 0)
33 termios
->c_lflag
= (0xffff0000 & termios
->c_lflag
) | tmp
;
35 if (get_user(termios
->c_line
, &termio
->c_line
) < 0)
38 if (copy_from_user(termios
->c_cc
, termio
->c_cc
, NCC
) != 0)
48 * Translate a "termios" structure into a "termio". Ugh.
50 static inline int kernel_termios_to_user_termio(struct termio __user
*termio
,
51 struct ktermios
*termios
)
53 if (put_user(termios
->c_iflag
, &termio
->c_iflag
) < 0 ||
54 put_user(termios
->c_oflag
, &termio
->c_oflag
) < 0 ||
55 put_user(termios
->c_cflag
, &termio
->c_cflag
) < 0 ||
56 put_user(termios
->c_lflag
, &termio
->c_lflag
) < 0 ||
57 put_user(termios
->c_line
, &termio
->c_line
) < 0 ||
58 copy_to_user(termio
->c_cc
, termios
->c_cc
, NCC
) != 0)
64 #ifndef user_termios_to_kernel_termios
65 #define user_termios_to_kernel_termios(k, u) copy_from_user(k, u, sizeof(struct termios))
68 #ifndef kernel_termios_to_user_termios
69 #define kernel_termios_to_user_termios(u, k) copy_to_user(u, k, sizeof(struct termios))
72 #define user_termios_to_kernel_termios_1(k, u) copy_from_user(k, u, sizeof(struct termios))
73 #define kernel_termios_to_user_termios_1(u, k) copy_to_user(u, k, sizeof(struct termios))
75 #endif /* __ARCH_TERMIO_GETPUT */
77 #endif /* _ASM_GENERIC_TERMIOS_H */