106 lines
2.9 KiB
C
106 lines
2.9 KiB
C
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/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 1995, 1996, 2000, 2001 by Ralf Baechle
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* Copyright (C) 2000, 2001 Silicon Graphics, Inc.
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*/
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#ifndef _ASM_TERMIOS_H
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#define _ASM_TERMIOS_H
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#include <linux/uaccess.h>
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#include <uapi/asm/termios.h>
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/*
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* intr=^C quit=^\ erase=del kill=^U
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* vmin=\1 vtime=\0 eol2=\0 swtc=\0
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* start=^Q stop=^S susp=^Z vdsusp=
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* reprint=^R discard=^U werase=^W lnext=^V
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* eof=^D eol=\0
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*/
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#define INIT_C_CC "\003\034\177\025\1\0\0\0\021\023\032\0\022\017\027\026\004\0"
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#include <linux/string.h>
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/*
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* Translate a "termio" structure into a "termios". Ugh.
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*/
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static inline int user_termio_to_kernel_termios(struct ktermios *termios,
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struct termio __user *termio)
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{
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unsigned short iflag, oflag, cflag, lflag;
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unsigned int err;
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if (!access_ok(VERIFY_READ, termio, sizeof(struct termio)))
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return -EFAULT;
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err = __get_user(iflag, &termio->c_iflag);
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termios->c_iflag = (termios->c_iflag & 0xffff0000) | iflag;
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err |=__get_user(oflag, &termio->c_oflag);
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termios->c_oflag = (termios->c_oflag & 0xffff0000) | oflag;
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err |=__get_user(cflag, &termio->c_cflag);
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termios->c_cflag = (termios->c_cflag & 0xffff0000) | cflag;
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err |=__get_user(lflag, &termio->c_lflag);
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termios->c_lflag = (termios->c_lflag & 0xffff0000) | lflag;
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err |=__get_user(termios->c_line, &termio->c_line);
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if (err)
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return -EFAULT;
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if (__copy_from_user(termios->c_cc, termio->c_cc, NCC))
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return -EFAULT;
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return 0;
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}
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/*
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* Translate a "termios" structure into a "termio". Ugh.
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*/
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static inline int kernel_termios_to_user_termio(struct termio __user *termio,
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struct ktermios *termios)
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{
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int err;
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if (!access_ok(VERIFY_WRITE, termio, sizeof(struct termio)))
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return -EFAULT;
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err = __put_user(termios->c_iflag, &termio->c_iflag);
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err |= __put_user(termios->c_oflag, &termio->c_oflag);
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err |= __put_user(termios->c_cflag, &termio->c_cflag);
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err |= __put_user(termios->c_lflag, &termio->c_lflag);
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err |= __put_user(termios->c_line, &termio->c_line);
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if (err)
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return -EFAULT;
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if (__copy_to_user(termio->c_cc, termios->c_cc, NCC))
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return -EFAULT;
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return 0;
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}
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static inline int user_termios_to_kernel_termios(struct ktermios __user *k,
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struct termios2 *u)
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{
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return copy_from_user(k, u, sizeof(struct termios2)) ? -EFAULT : 0;
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}
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static inline int kernel_termios_to_user_termios(struct termios2 __user *u,
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struct ktermios *k)
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{
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return copy_to_user(u, k, sizeof(struct termios2)) ? -EFAULT : 0;
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}
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static inline int user_termios_to_kernel_termios_1(struct ktermios *k,
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struct termios __user *u)
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{
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return copy_from_user(k, u, sizeof(struct termios)) ? -EFAULT : 0;
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}
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static inline int kernel_termios_to_user_termios_1(struct termios __user *u,
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struct ktermios *k)
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{
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return copy_to_user(u, k, sizeof(struct termios)) ? -EFAULT : 0;
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}
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#endif /* _ASM_TERMIOS_H */
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