1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ALPHA_TERMIOS_H 3 #define _ALPHA_TERMIOS_H 4 5 #include <uapi/asm/termios.h> 6 7 /* eof=^D eol=\0 eol2=\0 erase=del 8 werase=^W kill=^U reprint=^R sxtc=\0 9 intr=^C quit=^\ susp=^Z <OSF/1 VDSUSP> 10 start=^Q stop=^S lnext=^V discard=^U 11 vmin=\1 vtime=\0 12 */ 13 #define INIT_C_CC "\004\000\000\177\027\025\022\000\003\034\032\000\021\023\026\025\001\000" 14 15 /* 16 * Translate a "termio" structure into a "termios". Ugh. 17 */ 18 19 #define user_termio_to_kernel_termios(a_termios, u_termio) \ 20 ({ \ 21 struct ktermios *k_termios = (a_termios); \ 22 struct termio k_termio; \ 23 int canon, ret; \ 24 \ 25 ret = copy_from_user(&k_termio, u_termio, sizeof(k_termio)); \ 26 if (!ret) { \ 27 /* Overwrite only the low bits. */ \ 28 *(unsigned short *)&k_termios->c_iflag = k_termio.c_iflag; \ 29 *(unsigned short *)&k_termios->c_oflag = k_termio.c_oflag; \ 30 *(unsigned short *)&k_termios->c_cflag = k_termio.c_cflag; \ 31 *(unsigned short *)&k_termios->c_lflag = k_termio.c_lflag; \ 32 canon = k_termio.c_lflag & ICANON; \ 33 \ 34 k_termios->c_cc[VINTR] = k_termio.c_cc[_VINTR]; \ 35 k_termios->c_cc[VQUIT] = k_termio.c_cc[_VQUIT]; \ 36 k_termios->c_cc[VERASE] = k_termio.c_cc[_VERASE]; \ 37 k_termios->c_cc[VKILL] = k_termio.c_cc[_VKILL]; \ 38 k_termios->c_cc[VEOL2] = k_termio.c_cc[_VEOL2]; \ 39 k_termios->c_cc[VSWTC] = k_termio.c_cc[_VSWTC]; \ 40 k_termios->c_cc[canon ? VEOF : VMIN] = k_termio.c_cc[_VEOF]; \ 41 k_termios->c_cc[canon ? VEOL : VTIME] = k_termio.c_cc[_VEOL]; \ 42 } \ 43 ret; \ 44 }) 45 46 /* 47 * Translate a "termios" structure into a "termio". Ugh. 48 * 49 * Note the "fun" _VMIN overloading. 50 */ 51 #define kernel_termios_to_user_termio(u_termio, a_termios) \ 52 ({ \ 53 struct ktermios *k_termios = (a_termios); \ 54 struct termio k_termio; \ 55 int canon; \ 56 \ 57 k_termio.c_iflag = k_termios->c_iflag; \ 58 k_termio.c_oflag = k_termios->c_oflag; \ 59 k_termio.c_cflag = k_termios->c_cflag; \ 60 canon = (k_termio.c_lflag = k_termios->c_lflag) & ICANON; \ 61 \ 62 k_termio.c_line = k_termios->c_line; \ 63 k_termio.c_cc[_VINTR] = k_termios->c_cc[VINTR]; \ 64 k_termio.c_cc[_VQUIT] = k_termios->c_cc[VQUIT]; \ 65 k_termio.c_cc[_VERASE] = k_termios->c_cc[VERASE]; \ 66 k_termio.c_cc[_VKILL] = k_termios->c_cc[VKILL]; \ 67 k_termio.c_cc[_VEOF] = k_termios->c_cc[canon ? VEOF : VMIN]; \ 68 k_termio.c_cc[_VEOL] = k_termios->c_cc[canon ? VEOL : VTIME]; \ 69 k_termio.c_cc[_VEOL2] = k_termios->c_cc[VEOL2]; \ 70 k_termio.c_cc[_VSWTC] = k_termios->c_cc[VSWTC]; \ 71 \ 72 copy_to_user(u_termio, &k_termio, sizeof(k_termio)); \ 73 }) 74 75 #define user_termios_to_kernel_termios(k, u) \ 76 copy_from_user(k, u, sizeof(struct termios2)) 77 78 #define kernel_termios_to_user_termios(u, k) \ 79 copy_to_user(u, k, sizeof(struct termios2)) 80 81 #define user_termios_to_kernel_termios_1(k, u) \ 82 copy_from_user(k, u, sizeof(struct termios)) 83 84 #define kernel_termios_to_user_termios_1(u, k) \ 85 copy_to_user(u, k, sizeof(struct termios)) 86 87 #endif /* _ALPHA_TERMIOS_H */ 88