1 /* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 1995, 1996, 2000, 2001 by Ralf Baechle 7 * Copyright (C) 2000, 2001 Silicon Graphics, Inc. 8 */ 9 #ifndef _ASM_TERMIOS_H 10 #define _ASM_TERMIOS_H 11 12 #include <linux/uaccess.h> 13 #include <uapi/asm/termios.h> 14 15 /* 16 * intr=^C quit=^\ erase=del kill=^U 17 * vmin=\1 vtime=\0 eol2=\0 swtc=\0 18 * start=^Q stop=^S susp=^Z vdsusp= 19 * reprint=^R discard=^U werase=^W lnext=^V 20 * eof=^D eol=\0 21 */ 22 #define INIT_C_CC "\003\034\177\025\1\0\0\0\021\023\032\0\022\017\027\026\004\0" 23 24 #include <linux/string.h> 25 26 /* 27 * Translate a "termio" structure into a "termios". Ugh. 28 */ user_termio_to_kernel_termios(struct ktermios * termios,struct termio __user * termio)29 static inline int user_termio_to_kernel_termios(struct ktermios *termios, 30 struct termio __user *termio) 31 { 32 unsigned short iflag, oflag, cflag, lflag; 33 unsigned int err; 34 35 if (!access_ok(termio, sizeof(struct termio))) 36 return -EFAULT; 37 38 err = __get_user(iflag, &termio->c_iflag); 39 termios->c_iflag = (termios->c_iflag & 0xffff0000) | iflag; 40 err |=__get_user(oflag, &termio->c_oflag); 41 termios->c_oflag = (termios->c_oflag & 0xffff0000) | oflag; 42 err |=__get_user(cflag, &termio->c_cflag); 43 termios->c_cflag = (termios->c_cflag & 0xffff0000) | cflag; 44 err |=__get_user(lflag, &termio->c_lflag); 45 termios->c_lflag = (termios->c_lflag & 0xffff0000) | lflag; 46 err |=__get_user(termios->c_line, &termio->c_line); 47 if (err) 48 return -EFAULT; 49 50 if (__copy_from_user(termios->c_cc, termio->c_cc, NCC)) 51 return -EFAULT; 52 53 return 0; 54 } 55 56 /* 57 * Translate a "termios" structure into a "termio". Ugh. 58 */ kernel_termios_to_user_termio(struct termio __user * termio,struct ktermios * termios)59 static inline int kernel_termios_to_user_termio(struct termio __user *termio, 60 struct ktermios *termios) 61 { 62 int err; 63 64 if (!access_ok(termio, sizeof(struct termio))) 65 return -EFAULT; 66 67 err = __put_user(termios->c_iflag, &termio->c_iflag); 68 err |= __put_user(termios->c_oflag, &termio->c_oflag); 69 err |= __put_user(termios->c_cflag, &termio->c_cflag); 70 err |= __put_user(termios->c_lflag, &termio->c_lflag); 71 err |= __put_user(termios->c_line, &termio->c_line); 72 if (err) 73 return -EFAULT; 74 75 if (__copy_to_user(termio->c_cc, termios->c_cc, NCC)) 76 return -EFAULT; 77 78 return 0; 79 } 80 user_termios_to_kernel_termios(struct ktermios __user * k,struct termios2 * u)81 static inline int user_termios_to_kernel_termios(struct ktermios __user *k, 82 struct termios2 *u) 83 { 84 return copy_from_user(k, u, sizeof(struct termios2)) ? -EFAULT : 0; 85 } 86 kernel_termios_to_user_termios(struct termios2 __user * u,struct ktermios * k)87 static inline int kernel_termios_to_user_termios(struct termios2 __user *u, 88 struct ktermios *k) 89 { 90 return copy_to_user(u, k, sizeof(struct termios2)) ? -EFAULT : 0; 91 } 92 user_termios_to_kernel_termios_1(struct ktermios * k,struct termios __user * u)93 static inline int user_termios_to_kernel_termios_1(struct ktermios *k, 94 struct termios __user *u) 95 { 96 return copy_from_user(k, u, sizeof(struct termios)) ? -EFAULT : 0; 97 } 98 kernel_termios_to_user_termios_1(struct termios __user * u,struct ktermios * k)99 static inline int kernel_termios_to_user_termios_1(struct termios __user *u, 100 struct ktermios *k) 101 { 102 return copy_to_user(u, k, sizeof(struct termios)) ? -EFAULT : 0; 103 } 104 105 #endif /* _ASM_TERMIOS_H */ 106