/* termios.h: generic termios/termio user copying/translation */ #ifndef _ASM_GENERIC_TERMIOS_BASE_H #define _ASM_GENERIC_TERMIOS_BASE_H #include <linux/uaccess.h> #ifndef __ARCH_TERMIO_GETPUT /* * Translate a "termio" structure into a "termios". Ugh. */ static inline int user_termio_to_kernel_termios(struct ktermios *termios, struct termio __user *termio) { unsigned short tmp; if (get_user(tmp, &termio->c_iflag) < 0) goto fault; termios->c_iflag = (0xffff0000 & termios->c_iflag) | tmp; if (get_user(tmp, &termio->c_oflag) < 0) goto fault; termios->c_oflag = (0xffff0000 & termios->c_oflag) | tmp; if (get_user(tmp, &termio->c_cflag) < 0) goto fault; termios->c_cflag = (0xffff0000 & termios->c_cflag) | tmp; if (get_user(tmp, &termio->c_lflag) < 0) goto fault; termios->c_lflag = (0xffff0000 & termios->c_lflag) | tmp; if (get_user(termios->c_line, &termio->c_line) < 0) goto fault; if (copy_from_user(termios->c_cc, termio->c_cc, NCC) != 0) goto fault; return 0; fault: return -EFAULT; } /* * Translate a "termios" structure into a "termio". Ugh. */ static inline int kernel_termios_to_user_termio(struct termio __user *termio, struct ktermios *termios) { if (put_user(termios->c_iflag, &termio->c_iflag) < 0 || put_user(termios->c_oflag, &termio->c_oflag) < 0 || put_user(termios->c_cflag, &termio->c_cflag) < 0 || put_user(termios->c_lflag, &termio->c_lflag) < 0 || put_user(termios->c_line, &termio->c_line) < 0 || copy_to_user(termio->c_cc, termios->c_cc, NCC) != 0) return -EFAULT; return 0; } #ifndef user_termios_to_kernel_termios #define user_termios_to_kernel_termios(k, u) copy_from_user(k, u, sizeof(struct termios)) #endif #ifndef kernel_termios_to_user_termios #define kernel_termios_to_user_termios(u, k) copy_to_user(u, k, sizeof(struct termios)) #endif #define user_termios_to_kernel_termios_1(k, u) copy_from_user(k, u, sizeof(struct termios)) #define kernel_termios_to_user_termios_1(u, k) copy_to_user(u, k, sizeof(struct termios)) #endif /* __ARCH_TERMIO_GETPUT */ #endif /* _ASM_GENERIC_TERMIOS_BASE_H */