mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-27 06:20:50 +07:00
5b0ed5263c
The legacy TCSETA{,W,F} ioctls failed to set the termio->c_line field
on x86. This adds a missing get_user.
The same ioctls also fail to report faulting user pointers, which
we keep ignoring.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
115 lines
3.1 KiB
C
115 lines
3.1 KiB
C
#ifndef _ASM_X86_TERMIOS_H
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#define _ASM_X86_TERMIOS_H
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#include <asm/termbits.h>
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#include <asm/ioctls.h>
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struct winsize {
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unsigned short ws_row;
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unsigned short ws_col;
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unsigned short ws_xpixel;
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unsigned short ws_ypixel;
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};
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#define NCC 8
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struct termio {
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unsigned short c_iflag; /* input mode flags */
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unsigned short c_oflag; /* output mode flags */
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unsigned short c_cflag; /* control mode flags */
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unsigned short c_lflag; /* local mode flags */
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unsigned char c_line; /* line discipline */
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unsigned char c_cc[NCC]; /* control characters */
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};
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/* modem lines */
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#define TIOCM_LE 0x001
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#define TIOCM_DTR 0x002
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#define TIOCM_RTS 0x004
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#define TIOCM_ST 0x008
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#define TIOCM_SR 0x010
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#define TIOCM_CTS 0x020
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#define TIOCM_CAR 0x040
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#define TIOCM_RNG 0x080
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#define TIOCM_DSR 0x100
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#define TIOCM_CD TIOCM_CAR
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#define TIOCM_RI TIOCM_RNG
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#define TIOCM_OUT1 0x2000
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#define TIOCM_OUT2 0x4000
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#define TIOCM_LOOP 0x8000
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/* ioctl (fd, TIOCSERGETLSR, &result) where result may be as below */
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#ifdef __KERNEL__
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#include <asm/uaccess.h>
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/* intr=^C quit=^\ erase=del kill=^U
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eof=^D vtime=\0 vmin=\1 sxtc=\0
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start=^Q stop=^S susp=^Z eol=\0
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reprint=^R discard=^U werase=^W lnext=^V
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eol2=\0
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*/
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#define INIT_C_CC "\003\034\177\025\004\0\1\0\021\023\032\0\022\017\027\026\0"
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/*
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* Translate a "termio" structure into a "termios". Ugh.
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*/
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#define SET_LOW_TERMIOS_BITS(termios, termio, x) { \
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unsigned short __tmp; \
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get_user(__tmp,&(termio)->x); \
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*(unsigned short *) &(termios)->x = __tmp; \
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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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SET_LOW_TERMIOS_BITS(termios, termio, c_iflag);
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SET_LOW_TERMIOS_BITS(termios, termio, c_oflag);
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SET_LOW_TERMIOS_BITS(termios, termio, c_cflag);
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SET_LOW_TERMIOS_BITS(termios, termio, c_lflag);
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get_user(termios->c_line, &termio->c_line);
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return copy_from_user(termios->c_cc, termio->c_cc, NCC);
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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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put_user((termios)->c_iflag, &(termio)->c_iflag);
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put_user((termios)->c_oflag, &(termio)->c_oflag);
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put_user((termios)->c_cflag, &(termio)->c_cflag);
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put_user((termios)->c_lflag, &(termio)->c_lflag);
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put_user((termios)->c_line, &(termio)->c_line);
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return copy_to_user((termio)->c_cc, (termios)->c_cc, NCC);
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}
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static inline int user_termios_to_kernel_termios(struct ktermios *k,
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struct termios2 __user *u)
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{
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return copy_from_user(k, u, sizeof(struct termios2));
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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));
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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));
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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));
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}
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#endif /* __KERNEL__ */
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#endif /* _ASM_X86_TERMIOS_H */
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